Skid protection device for sealing-tape machine

Abstract

The utility model relates to a slip protection device for a sealing-tape machine, which comprises a driving roller, an unloading roller, a turnabout roller, a belt covering and connecting the driving roller, the unloading roller and the turnabout roller, a speed trolley arranged on the belt surface at the bottom of the belt, and a roller frame for mounting the driving roller, the patches are arranged on the side surface of the driving roller and are used as detection points; and the proximity switch is arranged on the roller frame and is used for detecting the occurrence frequency of the patch in a specific position or area. According to the utility model, the skipping times of the patch on the driving roller are detected through the proximity switch, a frequency signal and a frequency signal of the speed trolley are respectively accessed to the processor, the two frequency signals are compared to obtain a difference value, and when the difference value exceeds a set range, the processor outputs slip protection, namely, the normally-closed contact is opened, so that the patch is protected. Signals are connected into a sealing-tape machine protection structure to control the sealing-tape machine to stop, full-time protection is achieved, and safety, effectiveness and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor maintenance equipment, in particular to a belt conveyor slip protection device. Background Art

[0002] The belt conveyor slip protection device is an important component of the belt conveyor system. Its main function is to detect and issue an alarm when slip occurs between the conveyor belt and the transmission roller to trigger an emergency stop, thereby avoiding accidents. The prior art generally installs a speed trolley above the bottom belt surface of the belt conveyor. The trolley rotates the roller to contact the belt surface. A magnet is installed on the roller. The sensor monitors the number of times the magnetic head passes through. The frequency signal is converted into a speed value or a switch signal to the controller. The start time of the belt conveyor is set on the controller. When the start time is over, if the belt speed is lower than the set value, it is considered to be slipping, and the belt conveyor slip protection is realized. However, this scheme has the following disadvantages: it can only protect the slip phenomenon that occurs after the rated speed of the belt conveyor, and cannot be used during the start-up process of the belt conveyor. However, since more than 80% of the slip phenomenon of the belt conveyor occurs during the start-up process of the belt conveyor, the belt conveyor rarely slips during actual operation, so the strength of the slip protection is limited.

[0003] The existing belt slip protection operates independently without considering the actual situation. This solution is a perfect upgrade of the existing slip protection facilities and is fully compatible with the current protection system. Utility Model Content

[0004] In view of this, the utility model proposes a slip protection device for a belt conveyor, aiming to solve the problems existing in the prior art.

[0005] Specifically, the utility model is a belt conveyor slip protection device, the belt conveyor includes a driving roller, an unloading roller, a redirecting roller, a belt covering and connecting the driving roller, the unloading roller and the redirecting roller, and a speed trolley arranged on the belt surface at the bottom of the belt, and also includes:

[0006] A roller frame for mounting the driving roller;

[0007] A plurality of patches used as detection points arranged on the side of the driving roller;

[0008] A proximity switch is arranged on the roller frame for detecting the presence of the patch in the sensing area.

[0009] On the basis of the above scheme, it also includes: a sensor arranged on the speed trolley for detecting the frequency of the speed trolley.

[0010] On the basis of the above scheme, it also includes: a processor for comparing the difference between the frequency of the driving roller and the frequency of the speed trolley to issue a stop signal.

[0011] On the basis of the above solution, it also includes: a belt conveyor protection structure connected to the processor and used for receiving a stop signal to control the belt conveyor to stop.

[0012] Based on the above solution, a plurality of patches are evenly arranged along the circumferential direction of the side surface of the driving roller.

[0013] Based on the above solution, the number of the patches is 4-6.

[0014] The utility model detects the number of times the patch on the driving roller passes by the proximity switch, and connects the frequency signal and the frequency signal of the speed car to the processor respectively, compares the two frequency signals to obtain the difference, and the speed value of the speed car can display the actual speed of the belt conveyor. The processor can set the slip ratio and slip time. When the difference exceeds the set range, the processor outputs the slip protection, that is, the normally closed contact opens, and its signal is connected to the belt conveyor protection structure to control the belt conveyor to stop. Therefore, the utility model can provide full-time protection in the actual operation of the belt conveyor, which is safe, effective and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0016] Figure 1 Schematic diagram of the structure of the belt conveyor slip protection device in Example 1 (showing the driving roller);

[0017] Figure 2 It is a structural schematic diagram of the slip protection device for the belt conveyor in Example 1;

[0018] Figure 3 Schematic diagram of the position relationship between the patch and the proximity switch in Example 1;

[0019] Figure 4 is a cross-sectional view of the patch and the proximity switch in Example 1;

[0020] Figure 5 This is the electrical schematic diagram of the belt conveyor slip protection device in Example 1. DETAILED DESCRIPTION

[0021] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Example 1

[0023] like Figure 1-Figure 2 As shown, a belt conveyor slip protection device, the belt conveyor includes a driving roller 1-1, an unloading roller 1-2, a redirecting roller 1-3, a belt 2 covering and connecting the driving roller 1-1, the unloading roller 1-2 and the redirecting roller 1-3, and a speed trolley 3 arranged on the bottom belt surface of the belt 2, and also includes:

[0024] The roller frame 4 is used to fix the driving roller 1-1, a plurality of patches 5 for detecting points are arranged on the side of the driving roller 1-1, and a proximity switch 6 is arranged on the roller frame 4 to detect the number of times the patch 5 appears in a specific position or area. Specifically, the number of times the patch 5 passes over the driving roller 1-1 is detected by the patch 5 and the proximity switch 6 to obtain the frequency of the driving roller 1-1; when working, the roller frame 4 and the proximity switch 6 are relatively fixed, the roller frame 4 and the proximity switch 6 are stationary, the driving roller 1-1 drives the patch 5 to rotate, and the number of times the patch 5 appears in the sensing area of ​​the proximity switch 6 is recorded. In addition, the proximity switch 6 is installed on the roller frame 4, aligned with the center of the detection patch 5 and maintained at a suitable distance (generally 5-10mm).

[0025] As a specific implementation scheme, it also includes: a sensor 7 arranged on the speed trolley 3 for detecting the frequency of the speed trolley.

[0026] As a specific embodiment, it also includes: a processor 8 for comparing the difference between the frequency of the driving roller 1-1 and the frequency of the speed trolley 3 to issue a stop signal.

[0027] like Figure 5 As shown, as a specific implementation, it also includes: a belt conveyor protection structure 9 connected to the processor 8 for receiving a shutdown signal to control the belt conveyor to stop. Specifically, the processor 8 transmits the switch quantity information to the belt conveyor protection structure 9, and the belt conveyor protection structure 9 supplies power to the processor 8.

[0028] Specifically, the proximity switch 6 detects the number of times the patch 5 on the driving roller 1-1 passes, and connects the frequency signal and the frequency signal of the speed trolley 3 to the processor 8 respectively, and compares the two frequency signals to obtain the difference. The speed value of the speed trolley 3 can display the actual belt conveyor speed. The processor 8 can set the slip ratio and slip time. When the difference exceeds the set range, the processor 8 outputs the slip protection, that is, the normally closed contact opens, and its signal is connected to the belt conveyor protection structure 9 to control the belt conveyor to stop.

[0029] In addition, the processor 8 can also compare the speed value of the driving roller 1-1 with the speed value of the redirecting roller 1-3 to verify whether the belt conveyor operates normally.

[0030] As a specific implementation scheme, a plurality of patches 5 are evenly arranged along the circumference of the side of the driving roller 1-1. Preferably, the plurality of patches 5 include 4-6 iron sheets, and 4-6 patches 5 are welded or pasted around the edge of the driving roller 1-1 on one side of the driving roller 1-1 of the tape conveyor as detection points.

[0031] Example 2

[0032] This embodiment provides a specific implementation method based on the belt conveyor slip protection device in Embodiment 1. The frequency signal of the speed trolley 3 is 200-1000Hz, and the corresponding belt conveyor speed is 0-6M / s.

[0033] The utility model discloses a slip protection device for an adhesive tape conveyor, which can prevent slipping during the start-up of the adhesive tape conveyor and effectively improve the effectiveness of slip protection.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A belt conveyor skidding protection device, the belt conveyor comprising a driving roller (1-1), an unloading roller (1-2), a redirecting roller (1-3), a belt (2) covering and connecting the driving roller (1-1), the unloading roller (1-2) and the redirecting roller (1-3), and a speed trolley (3) arranged on the bottom belt surface of the belt (2), characterized in that: Also includes: A roller frame (4) for mounting the driving roller (1-1); A plurality of patches (5) used as detection points and arranged on the side of the driving roller (1-1); A proximity switch (6) is arranged on the roller frame (4) for detecting the presence of the patch (5) within the sensing area.

2. The belt conveyor slip protection device according to claim 1, characterized in that: Also includes: A sensor (7) is arranged on the speed trolley (3) and is used to detect the frequency of the speed trolley.

3. The belt conveyor slip protection device according to claim 2, characterized in that: Also includes: A processor (8) is used for comparing the difference between the frequency of the driving roller (1-1) and the frequency of the speed trolley (3) to issue a stop signal.

4. The belt conveyor slip protection device according to claim 3, characterized in that: Also includes: A belt conveyor protection structure (9) connected to the processor (8) and used for receiving a stop signal to control the belt conveyor to stop.

5. The belt conveyor slip protection device according to claim 1, characterized in that: A plurality of patches (5) are evenly arranged along the circumferential direction of the side surface of the driving roller (1-1).

6. The belt conveyor slip protection device according to claim 1 or 5, characterized in that: The number of the patches (5) is 4-6.

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