Roller carrier light curtain anti-channeling limiting device and limiting method

Abstract

The invention discloses a roller carrier light curtain anti-channeling limiting device which comprises a vertical supporting rod, an upper supporting arm, a lower supporting arm and a relay, the vertical supporting rod is vertically arranged, the upper supporting arm and the lower supporting arm are both arranged on the vertical supporting rod, and the upper supporting arm and the lower supporting arm are parallel to each other; light curtain sensors are arranged at corresponding positions of the upper supporting arm and the lower supporting arm, the light curtain sensors comprise an outer side sensor and an inner side sensor, and each sensor comprises a transmitting end and a receiving end. The roller carrier light curtain anti-channeling limiting device disclosed by the invention can be suitable for anti-channeling limiting of rollers of different specifications.

Description

Technical Field

[0001] This invention relates to a roller frame light curtain anti-slip limiting device and limiting method, belonging to the field of nuclear power equipment manufacturing technology. Background Technology

[0002] The manufacturing of pressure vessels for nuclear power plants falls under the category of specialized equipment manufacturing, demanding extremely high standards for product quality and production processes. Furthermore, the raw materials for pressure vessels are highly valuable, and any accidents during production could result in incalculable losses.

[0003] The manufacturing process of pressure vessels mainly includes key steps such as raw material procurement, blanking, marking, forming, beveling the cylinder edge, cylinder assembly, cleaning, welding, and inspection. Most of these steps, such as marking, beveling, assembly, cleaning, welding, and inspection, need to be completed on a roller frame, and some steps require continuous rotation of the roller frame.

[0004] Theoretically, when a cylindrical workpiece rotates on the rollers of a roller frame, the plane unfolding along the axis of the cylinder is perpendicular to the rolling direction of the rollers. That is, the cylindrical workpiece should not experience axial movement. However, in actual production, there are slight deviations in the placement of the roller frame and its components. For example, when a cylindrical workpiece rotates on the rollers, the plane unfolding along the cylinder, parallel to the cylinder's axis, is not perpendicular to the rolling direction of the rollers, and axial movement is a common phenomenon. This manifests as the cylinder moving along one axial direction as the roller frame rotates continuously in one direction. For instance, a cylinder approximately 4 meters long might move axially by 2mm to 30mm per revolution, depending on factors such as the precision of the roller frame and the surface. The movement that occurs during the rotation of the cylinder is difficult to detect, especially during continuous rotation, where workers may forget or find it hard to notice. As the cumulative amount of movement increases, it can easily lead to safety and quality accidents such as the cylinder bumping into things or falling during operation.

[0005] Therefore, it is necessary to conduct in-depth research on the roller frame movement limit to solve the above problems. Summary of the Invention

[0006] To overcome the above problems, in-depth research was conducted, and a roller frame light curtain anti-slip limiting device was designed, including a vertical support rod, an upper support arm, a lower support arm, and a relay. The vertical support rod is set vertically, and the upper and lower support arms are both set on the vertical support rod and are parallel to each other. Light curtain sensors are set at corresponding positions on the upper and lower support arms. The light curtain sensors include an outer sensor and an inner sensor, and each sensor includes a transmitter and a receiver.

[0007] In a preferred embodiment, the roller is placed on a roller frame, the upper or lower support arm is parallel to the roller shaft of the roller frame, one of the upper and lower support arms is placed inside the roller, the other is placed outside the roller, and the end of the roller is placed between the inner and outer sensors.

[0008] In a preferred embodiment, the upper support arm is provided with an outer sensor receiver and an inner sensor transmitter, or an outer sensor transmitter and an inner sensor receiver.

[0009] In a preferred embodiment, the roller frame light curtain anti-slip limiting device further includes a relay for controlling the power supply of the roller frame rollers.

[0010] In a preferred embodiment, the position of the inner or outer sensor on the upper or lower support arm is adjustable.

[0011] In a preferred embodiment, the upper support arm and the lower support arm are provided with T-shaped grooves, and a locking handle is provided on the outside of the outer sensor or the inner sensor. The outer sensor or the inner sensor is fixed in a suitable position on the upper support arm or the lower support arm by cooperating with the locking handle and the T-shaped groove.

[0012] In a preferred embodiment, the positions of the upper and lower support arms on the vertical support rod are adjustable.

[0013] This invention also discloses a method for preventing and limiting the movement of a roller frame light curtain, which uses a roller frame light curtain anti-movement limiting device and includes the following steps: S1. Place the roller in a suitable position on the roller frame; S2. Place the roller frame light curtain anti-slip limiting device at an appropriate position at the end of the roller, so that the end of the roller is located between the outer sensor and the inner sensor, and adjust the distance between the outer sensor and the inner sensor. S3. Connect the relay to the control power supply of the roller frame; S4. The rollers of the roller frame drive the drum to rotate. The outer and inner sensors continuously detect the movement. If the inner sensor detects a light signal or the light signal of the outer sensor is interrupted, it means that the drum movement exceeds the threshold. The relay disconnects the power supply to the drum frame, and the drum stops rotating.

[0014] In a preferred embodiment, in S2, the positions of the outer sensor transmitter and receiver are adjusted so that the transmitter and receiver are aligned. The same adjustment was made to the inner sensor.

[0015] In a preferred embodiment, the distance between the upper support arm, the lower support arm and the drum wall is ≥150mm.

[0016] The beneficial effects of this invention include: (1) According to the device provided by the present invention, the position and orientation of each component can be freely adjusted, which can realize the cylinder with different diameter and wall thickness, and the roller frame with different specifications. In particular, the movement limit width can be flexibly set according to the position of the cylinder on the roller frame, the position of the protrusion on the cylinder, and the position of its own placement. (2) According to the device provided by the present invention, the light curtain sensor assembly provided by the present invention is not only a point light sensor assembly. Its purpose is to be applicable to cylinders with a small amount of missing parts at the end. As long as the missing part is less than the total length of the light curtain, it can be applied to cylinders with irregular ends, and its application range is wider. (3) The device provided by the present invention has a reasonable and durable mechanical component structure and a simple and clear electrical component structure. Attached Figure Description

[0017] Figure 1 This diagram illustrates the structural schematic of a roller frame light curtain anti-slip limiting device according to a preferred embodiment of the present invention; Figure 2 The diagram illustrates the structural intent of a roller frame light curtain anti-slip limiting device according to a preferred embodiment of the present invention.

[0018] Explanation of icon numbers: 1-Support rod; 2- Upper support arm; 3-Lower support arm; 4-Controller box; 6-Tightening handle; 7-Reinforce sheet metal; 8-roller; 9-Roller frame; 11-Base; 12-Anti-slip mat; 13-Hook; 51 - Transmitter; 52-Receiver. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent.

[0020] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0021] In pressure vessel assembly and welding processes, theoretically, cylindrical workpieces with cylindrical outer surfaces should not experience axial movement when rotating on rollers. The plane extending along the cylinder's axis should be perpendicular to the roller's rolling direction. However, in actual production, deviations in the roller frame's placement and its components can cause axial movement of cylindrical workpieces. This movement is easily overlooked and difficult to detect, especially during welding and other processes requiring prolonged rotation. The accumulated movement can exceed the allowable maximum, potentially leading to collisions or falls of the cylinder.

[0022] According to the present invention, a roller frame light curtain anti-slip limiting device is provided, such as... Figure 1 As shown, it includes a vertical support rod 1, an upper support arm 2, a lower support arm 3, and a relay. The vertical support rod 1 is vertically arranged, and the upper support arm 2 and the lower support arm 3 are both arranged on the vertical support rod 1 and are parallel to each other. Light curtain sensors are arranged at corresponding positions on the upper support arm 2 and the lower support arm 3. The light curtain sensors include an outer sensor and an inner sensor, and each sensor includes a transmitter 51 and a receiver 52.

[0023] According to the present invention, such as Figure 2 As shown, the roller 8 is placed on the roller frame 9. The upper support arm 2 or the lower support arm 3 is parallel to the roller shaft of the roller frame 9. One of the upper support arm 2 and the lower support arm 3 is placed inside the roller 8, and the other is placed outside the roller 8. The end of the roller 8 is placed between the inner sensor and the outer sensor. When the roller rolls, if there is any movement, the inner sensor will detect the light signal or the light signal of the outer sensor will be interrupted, thus being detected in time.

[0024] In a preferred embodiment, each receiver includes multiple optical signal sensors.

[0025] In a preferred embodiment, the upper support arm 2 is provided with an outer sensor receiver and an inner sensor transmitter, or an outer sensor transmitter and an inner sensor receiver. This avoids the outer and inner sensor receivers being located on the same support arm, thereby preventing mutual interference between the light signals emitted by the outer and inner sensor transmitters.

[0026] In a preferred embodiment, the roller frame light curtain anti-slip limiting device further includes a relay, which is used to control the power supply of the roller frame 9. Specifically, when the inner sensor detects a light signal or the outer sensor's light signal is interrupted, the power supply of the roller frame 9 is disconnected by controlling it.

[0027] In a preferred embodiment, the device also has a controller box 4 for storing relays, thus preventing exposed electronic components from causing safety hazards.

[0028] Preferably, the position of the inner or outer sensor on the upper support arm 2 and the lower support arm 3 is adjustable, so as to adjust the inner and outer sensors according to actual needs and realize the adjustment of the roller movement restriction range.

[0029] In this invention, the structure for adjusting the position of the inner or outer sensor on the upper support arm 2 and the lower support arm 3 is not limited. Those skilled in the art can freely set it according to experience, such as buckles, clamps, magnetic attraction, etc.

[0030] Preferably, the upper support arm 2 and the lower support arm 3 are provided with T-shaped grooves, and a locking handle 6 is provided on the outside of the outer sensor or the inner sensor. The outer sensor or the inner sensor is fixed in a suitable position on the upper support arm 2 or the lower support arm 3 by the locking handle 6 cooperating with the T-shaped groove. This structure is convenient to adjust, easy to operate, and easy to manufacture.

[0031] The fixed handle, also known as the adjustable handle, is a common type of fixed adjustment mechanism. Its specific structure will not be described in detail in this invention.

[0032] Preferably, the range of movement restriction is set to 30mm~300mm, and more preferably to 50mm~100mm.

[0033] Preferably, the distance between the outer sensor and the inner sensor is set to twice the swerving limit value.

[0034] In a preferred embodiment, the positions of the upper support arm 2 and the lower support arm 3 on the vertical support rod 1 are adjustable, so that the device can adapt to rollers of different sizes.

[0035] In a preferred embodiment, the vertical support rod 1 is provided with a T-slot. By engaging the locking handle with the T-slot, the upper support arm and the lower support arm are fixed at appropriate positions on the vertical support rod, thereby enabling quick and arbitrary adjustment of the height and spacing of the upper and lower support arms to accommodate cylinders of different heights and thicknesses.

[0036] In a preferred embodiment, a reinforcing sheet metal 7 is provided at the connection position between the upper support arm 2, the lower support arm 3 and the vertical support rod 1. The reinforcing sheet metal 7 increases the contact area between the upper support arm 2, the lower support arm 3 and the vertical support rod 1, thereby increasing stability.

[0037] In a preferred embodiment, the device also has a base 11, on which the vertical support rod 1 is fixed, thereby increasing the stability of the device.

[0038] More preferably, an anti-slip pad 12 is provided at the lower end of the base to further increase the stability of the device when it is placed.

[0039] In a preferred embodiment, a hook 13 is also provided on the support rod 1 for hanging wires to avoid the wires being too long and causing clutter on the ground.

[0040] In this invention, the roller frame light curtain anti-slip limiting device can provide anti-slip function for rollers of various shapes without changing the structure or replacing any parts, including flat-end cylindrical workpieces, uneven-end cylindrical workpieces, and rollers with protrusions at the ends, wherein the rollers with protrusions use the protrusions as the roller ends.

[0041] The present invention also provides a method for preventing and limiting the movement of a roller frame light curtain, which uses the above-mentioned roller frame light curtain anti-movement limiting device and includes the following steps: S1. Place the roller in a suitable position on the roller frame; S2. Place the roller frame light curtain anti-slip limiting device at an appropriate position at the end of the roller, so that the end of the roller is located between the outer sensor and the inner sensor, and adjust the distance between the outer sensor and the inner sensor. S3. Connect the relay to the control power supply of the roller frame; S4. The rollers of the roller frame drive the roller to rotate. The outer and inner sensors continuously detect the movement. If the inner sensor detects a light signal or the light signal of the outer sensor is interrupted, it means that the roller movement exceeds the threshold. The relay disconnects the power supply to the roller frame, and the roller stops rotating, thus protecting the roller from collisions with other objects or the roller falling.

[0042] Preferably, in S1, before placing the roller on the roller frame, it is necessary to observe the structural characteristics of the roller body, measure and determine the specific positions where the roller frame's driving wheel and driven wheel need to support the cylinder body, measure and consider the distance between the protrusions or recesses of the cylinder body and the placement position, and determine the maximum value of the roller's axial movement allowed, thereby obtaining the set value of the distance between the outer sensor and the inner sensor.

[0043] Preferably, in S2, the positions of the outer sensor transmitter and receiver are adjusted so that the transmitter and receiver are aligned; The same adjustment was made to the inner sensor.

[0044] Preferably, in S2, by adjusting the height and relative height of the upper and lower support arms, one of the upper and lower support arms can be easily placed into the drum, while the other is located outside the drum, and neither the upper nor lower support arm contacts the drum.

[0045] Preferably, the distance between the upper support arm, the lower support arm and the drum wall is ≥150mm to avoid collisions during installation.

[0046] Preferably, the axial movement restriction value is 30mm~300mm, more preferably 50mm~100mm.

[0047] Preferably, the distance between the outer sensor and the inner sensor is set to twice the swerving limit value.

[0048] Preferably, the end of the roller is placed between the outer sensor and the inner sensor.

[0049] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of this invention, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] The present invention has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present invention based on these embodiments, all of which fall within the scope of protection of the present invention.

Claims

1. A roller frame light curtain anti-slip limiting device, characterized in that, It includes a vertical support rod (1), an upper support arm (2), a lower support arm (3), and a relay. The vertical support rod (1) is set vertically. The upper support arm (2) and the lower support arm (3) are both set on the vertical support rod (1) and are parallel to each other. Light curtain sensors are set at corresponding positions on the upper support arm (2) and the lower support arm (3). The light curtain sensors include an outer sensor and an inner sensor. Each sensor includes a transmitter (51) and a receiver (52).

2. The roller frame light curtain anti-slip limiting device according to claim 1, characterized in that, The roller (8) is placed on the roller frame (9), the upper support arm (2) or the lower support arm (3) is parallel to the roller of the roller frame (9), one of the upper support arm (2) and the lower support arm (3) is placed inside the roller (8), the other is placed outside the roller (8), and the end of the roller (8) is placed between the inner sensor and the outer sensor.

3. The roller frame light curtain anti-slip limiting device according to claim 1, characterized in that, The upper support arm (2) is provided with an outer sensor receiving end and an inner sensor transmitting end, or an outer sensor transmitting end and an inner sensor receiving end.

4. The roller frame light curtain anti-slip limiting device according to claim 1, characterized in that, The roller frame light curtain anti-slip limit device also includes a relay, which is used to control the power supply of the roller frame (9).

5. The roller frame light curtain anti-slip limiting device according to claim 1, characterized in that, The position of the inner or outer sensor on the upper support arm (2) and lower support arm (3) is adjustable.

6. The roller frame light curtain anti-slip limiting device according to claim 5, characterized in that, The upper support arm (2) and the lower support arm (3) are provided with T-shaped grooves. A locking handle (6) is provided on the outside of the outer sensor or the inner sensor. The outer sensor or the inner sensor is fixed in a suitable position on the upper support arm (2) and the lower support arm (3) by cooperating with the locking handle (6) and the T-shaped groove.

7. The roller frame light curtain anti-slip limiting device according to claim 1, characterized in that, The positions of the upper support arm (2) and the lower support arm (3) on the vertical support rod (1) are adjustable.

8. A method for preventing and limiting the movement of a roller frame light curtain, as described in any one of claims 1-7, comprising the following steps: S1. Place the roller in a suitable position on the roller frame; S2. Place the roller frame light curtain anti-slip limiting device at an appropriate position at the end of the roller, so that the end of the roller is located between the outer sensor and the inner sensor, and adjust the distance between the outer sensor and the inner sensor. S3. Connect the relay to the control power supply of the roller frame; S4. The rollers of the roller frame drive the drum to rotate. The outer and inner sensors continuously detect the movement. If the inner sensor detects a light signal or the light signal of the outer sensor is interrupted, it means that the drum movement exceeds the threshold. The relay disconnects the power supply to the drum frame, and the drum stops rotating.

9. The roller frame light curtain anti-slip limiting method according to claim 8, characterized in that, In S2, adjust the positions of the transmitter and receiver of the outer sensor to align them. The same adjustment was made to the inner sensor.

10. The roller frame light curtain anti-slip limiting method according to claim 8, characterized in that, The distance between the upper support arm, the lower support arm and the drum wall is ≥150mm.

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