Roller conveyor

Abstract

The utility model belongs to the technical field of conveying equipment, and relates to a roller conveyor. The roller conveyor comprises rotating rollers arranged at intervals in the conveying direction, and a safety step is fixedly installed between every two adjacent rotating rollers. The safety step comprises a pedal and a photoelectric sensor; the pedal is a horizontal plate and comprises an edge a and an edge b which are parallel to each other, and the edge a and the edge b are parallel to the length direction of the rotating roller; the edge a and the edge b are as long as the rotating roller; the height of the upper surface of the pedal in the vertical direction is recorded as h1, the height of the axis of the rotating roller in the vertical direction is recorded as h2, the radius of the rotating roller is recorded as r, and h1 meets the condition that h2 is smaller than or equal to h1lt; h2 + r; and the photoelectric sensor is used for sending a signal to a control system of the roller conveyor when detecting that an object exists on the upper surface of the pedal, so that the rotating roller stops rotating and keeps a static state. According to the utility model, the feet of a maintainer can be prevented from being clamped in a gap between the two rollers, and accidents are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying equipment and relates to a roller conveyor. Background Art

[0002] As a widely used logistics equipment, roller conveyor has a simple structure, high reliability and strong carrying capacity. It is suitable for a variety of complex processes and scenarios. Especially in large-scale warehouses and other occasions, roller conveyor lines are often intertwined and connected to form a complex logistics network.

[0003] Patent application CN111846744B discloses a roller conveyor, comprising a frame, a power cylinder arranged on the frame, a conveying plate located above the power cylinder and a limiting mechanism located below the power cylinder, wherein the limiting mechanism comprises a fixed plate, a movable plate, a locking rod, a turntable and a turntable motor, wherein the fixed plate is fixed to the inner side of the frame, the movable plate is slidably matched on the fixed plate, the locking rod is hinged on the fixed plate for locking the movable plate, the turntable is connected to the turntable motor drive, the turntable rotates periodically under the drive of the turntable motor, so that the movable plate periodically moves from between the two power cylinders to the It extends upward to abut against the conveying plate to block the conveying plate; the limit mechanism is cleverly arranged below the power cylinder, and the space layout is reasonable, making the overall structure relatively compact; there are many roller conveyors with similar designs to the roller conveyor in patent application CN111846744B, such as patent application CN111846744A, patent application CN113844870B, etc.; in these roller conveyors, adjacent rollers (or rollers) are usually connected by chains or belts, which leads to large gaps between adjacent rollers. For staff who need to enter the roller conveyor area for inspection and maintenance, they must often cross these conveyor lines or step on the rollers to pass. This method can easily cause the feet to slip and get stuck in the gaps between the rollers, causing serious personal injury accidents. This safety hazard not only threatens the life safety of the staff, but also affects the normal production and operation of the enterprise.

[0004] Therefore, designing a roller conveyor that can safely and conveniently cross the roller conveyor line is of great significance for ensuring the personal safety of workers and improving the efficiency and safety of the conveyor. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and provides a roller conveyor.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A roller conveyor comprises rotating rollers arranged at intervals along a conveying direction, and a safety step is fixedly installed between two adjacent rotating rollers;

[0008] The safety step includes 1 pedal and 1 photoelectric sensor;

[0009] The pedal is a horizontal plate, including two parallel sides a and b, and sides a and b are parallel to the length direction of the rotating roller;

[0010] The lengths of sides a and b are the same as the length of the rotating roller;

[0011] The distance between sides a and b is denoted as d1, and the minimum width of the gap between two adjacent rotating rollers is denoted as d2. Then d1 satisfies: d2 - t ≤ d1 < d2, where t = 10 mm. Such a setting can prevent the feet from getting stuck in the gap between the rotating rollers to the greatest extent;

[0012] The height of the upper surface of the pedal in the vertical direction is denoted as h1, the height of the axis of the rotating roller in the vertical direction is denoted as h2, and the radius of the rotating roller is denoted as r. Then h1 satisfies: h2 ≤ h1 < h2 + r;

[0013] The photoelectric sensor is used to send a signal to the control system of the roller conveyor when an object is detected on the upper surface of the pedal, so that the rotating roller stops rotating and remains stationary; the photoelectric sensor can stop the rotating roller from rotating and keep it stationary at the fastest speed, providing a stable and reliable standing and operating platform for maintenance personnel and significantly improving the safety of the maintenance process.

[0014] As a preferred technical solution:

[0015] For a roller conveyor as described above, the pedal is a horizontally placed rectangular plate.

[0016] For a roller conveyor as described above, the safety step further includes a mounting bottom plate and mounting side plates;

[0017] The mounting bottom plate is a horizontal plate, located below the pedal and fixedly connected to the lower surface of the pedal;

[0018] The mounting side plates are vertical plates;

[0019] The number of mounting side plates is 2, and they are respectively fixedly connected to both ends of the mounting bottom plate; each mounting side plate is also fixedly connected to the frame of the roller conveyor.

[0020] For a roller conveyor as described above, the mounting bottom plate is a horizontally placed rectangular plate, and its width is denoted as d3. Then d3 satisfies: d3 ≤ d2.

[0021] For a roller conveyor as described above, the safety step further includes columns;

[0022] The mounting bottom plate is fixedly connected to the lower surface of the pedal through columns;

[0023] The number of the pillars is 2, and the 2 pillars are arranged at intervals along the length direction of the pedal.

[0024] In the roller conveyor as described above, a through hole is provided on the mounting side plate, and the mounting side plate is fixedly connected to the frame of the roller conveyor through the cooperation of bolts, nuts and the through hole.

[0025] In the roller conveyor as described above, the upper surface of the pedal is provided with anti-skid patterns, and the anti-skid patterns have a conspicuous yellow background color, which serves as a warning.

[0026] Beneficial effects:

[0027] The utility model fixes a safety step between two adjacent rotating rollers of the roller conveyor. When the photoelectric sensor on the safety step detects an object on the upper surface of the step, it sends a signal to the control system of the roller conveyor, so that the rotating roller stops rotating and keeps it stationary in time. Due to the existence of the safety step, the risk of the maintenance personnel's feet slipping and getting stuck in the gap between the two rollers when crossing the conveyor line can be avoided. At the same time, the rotating roller stops rotating and keeps it stationary, which can provide a reliable standing and operating platform for the maintenance personnel, significantly improving the safety of the maintenance process and effectively preventing accidents that may occur on the production site. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a safety step of a roller conveyor according to the utility model;

[0029] Figure 2 This is a top view of a roller conveyor of the utility model (only part of the safety step is shown in the figure);

[0030] Among them, 1-installation base plate, 2-rotation roller, 3-pedal, 4-photoelectric sensor, 5-through hole, 6-pillar, 7-installation side plate. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0032] A roller conveyor, such as Figure 2 As shown, it includes rotating rollers 2 arranged at intervals along the conveying direction, and a safety step is fixedly installed between two adjacent rotating rollers 2;

[0033] like Figure 1 and Figure 2As shown, the safety step comprises a pedal 3, a photoelectric sensor 4, a mounting base plate 1, two pillars 6 and two mounting side plates 7;

[0034] The pedal 3 is a horizontally placed rectangular plate, and two mutually parallel sides of the rectangular plate parallel to the length direction of the rotating roller 2 are denoted as side a and side b;

[0035] The lengths of side a and side b are the same as the length of rotating roller 2;

[0036] The distance between side a and side b is denoted as d1, and the minimum width of the gap between two adjacent rotating rollers 2 is denoted as d2, then d1 satisfies: d2-t≤d1 <d2,t=10mm;

[0037] The height of the upper surface of the pedal 3 in the vertical direction is recorded as h1, the height of the axis of the rotating roller 2 in the vertical direction is recorded as h2, and the radius of the rotating roller 2 is recorded as r, then h1 satisfies: h2≤h1 <h2+r;

[0038] The upper surface of the pedal 3 is provided with anti-slip texture;

[0039] The installation base plate 1 is a horizontally placed rectangular plate, located below the pedal 3, and its width is d3, then d3 satisfies: d3≤d2;

[0040] Two pillars 6 are arranged at intervals along the length direction of the pedal 3;

[0041] The mounting base plate 1 is fixedly connected to the lower surface of the pedal 3 through two pillars 6;

[0042] The two mounting side plates 7 are both vertical plates, and the two mounting side plates 7 are respectively fixedly connected to the two ends of the mounting bottom plate 1;

[0043] Through holes 5 are provided on the two mounting side plates 7, and each mounting side plate 7 is fixedly connected to the frame of the roller conveyor through the cooperation of bolts, nuts and through holes 5;

[0044] like Figure 2 As shown, the photoelectric sensor 4 is installed on the pedal 3. The photoelectric sensor 4 is used to send a signal to the control system of the roller conveyor when detecting an object on the upper surface of the pedal 3, so that the rotating roller 2 stops rotating and remains stationary.

Claims

1. A roller conveyor, comprising rotating rollers (2) arranged at intervals along a conveying direction, characterized in that: A safety step is fixedly installed between two adjacent rotating rollers (2); The safety step comprises a pedal (3) and a photoelectric sensor (4); The pedal (3) is a horizontal plate, comprising two mutually parallel sides a and b, and the sides a and b are parallel to the length direction of the rotating roller (2); The lengths of the side a and the side b are the same as the length of the rotating roller (2); The distance between side a and side b is denoted as d1, and the minimum width of the gap between two adjacent rotating rollers (2) is denoted as d2. d1 satisfies: d2-t≤d1 <d2,t=10mm; The height of the upper surface of the pedal (3) in the vertical direction is denoted as h1, the height of the axis of the rotating roller (2) in the vertical direction is denoted as h2, and the radius of the rotating roller (2) is denoted as r, then h1 satisfies: h2≤h1 <h2+r; The photoelectric sensor (4) is used to send a signal to the control system of the roller conveyor when detecting an object on the upper surface of the pedal (3), so that the rotating roller (2) stops rotating and remains stationary.

2. A roller conveyor according to claim 1, characterized in that: The pedal (3) is a horizontally placed rectangular plate.

3. A roller conveyor according to claim 1, characterized in that: The safety step also includes a mounting base plate (1) and a mounting side plate (7); The mounting base plate (1) is a horizontal plate, located below the pedal (3) and fixedly connected to the lower surface of the pedal (3); The side panels (7) are installed as vertical panels; There are two mounting side plates (7), which are respectively fixedly connected to the two ends of the mounting base plate (1); each mounting side plate (7) is also fixedly connected to the frame of the roller conveyor.

4. A roller conveyor according to claim 3, characterized in that: The installation base plate (1) is a horizontally placed rectangular plate, and its width is denoted as d3, then d3 satisfies: d3≤d2.

5. A roller conveyor according to claim 4, characterized in that: The safety step also includes a support column (6); The mounting base plate (1) is fixedly connected to the lower surface of the pedal (3) via a support (6); The number of the pillars (6) is two, and the two pillars (6) are arranged at intervals along the length direction of the pedal (3).

6. A roller conveyor according to claim 4, characterized in that: The mounting side plate (7) is provided with a through hole (5), and the mounting side plate (7) is fixedly connected to the frame of the roller conveyor through the cooperation of bolts, nuts and the through hole (5).

7. The roller conveyor according to claim 1, characterized in that: The upper surface of the pedal (3) is provided with anti-slip patterns.

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