A belt conveyor belt speed detection device

Abstract

The utility model relates to a belt conveyor conveying belt speed detection device belongs to conveyor detection technical field. This belt conveyor conveying belt speed detection device, including rotary encoder and frame, be provided with conveyer belt on the frame, the outside of rotary encoder is provided with the speed measuring wheel that contacts conveyer belt inside, still include dust removal mechanism, the dust removal mechanism sets up in the outside of speed measuring wheel and is used to carry out dust removal processing to the operation area of speed measuring wheel, reduces the wear and tear and the skidding phenomenon to take place, promotes the detection accuracy, wherein, the dust removal mechanism includes two along the speed measuring wheel axle symmetry and set up horizontal strip, the one side of horizontal strip is provided with exhaust groove, can promote the close -fit effect between speed measuring wheel and conveyer belt, reduces the clearance production, promotes the detection effect of speed measuring wheel, and carries out dust removal dustproof to the operation area of speed measuring wheel in the detection process, reduces the wear and tear aggravation and the polishing phenomenon to produce, guarantees the detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of conveyor testing technology, and in particular to a belt conveyor speed testing device. Background Technology

[0002] During the operation of a belt conveyor, a detection device is needed to monitor the speed of the conveyor belt in real time. By comparing the detected belt speed with the actual belt speed, the movement of the conveyor belt can be judged, thereby reducing potential safety hazards to the equipment.

[0003] Existing contact-type detection devices typically use a speed measuring wheel that contacts a conveyor belt, utilizing the friction between the two to rotate the speed measuring wheel and complete the detection operation. However, this method has the following drawbacks in actual use: during the detection process, wear can cause gaps between the speed measuring wheel and the conveyor belt, resulting in poor detection performance. Furthermore, dust and impurities in the working environment can increase wear and slippage in the working area of ​​the speed measuring wheel, affecting detection accuracy. Utility Model Content

[0004] Therefore, it is necessary to provide a belt speed detection device for belt conveyors to address the problem that wear and dust can easily lead to poor detection results of the speed measuring wheel and affect the detection accuracy.

[0005] A conveyor belt speed detection device for a belt conveyor includes a rotary encoder and a frame. A conveyor belt is mounted on the frame, and a speed measuring wheel is mounted on the outer side of the rotary encoder, contacting the inner side of the conveyor belt. The device also includes a dust removal mechanism located on the outer side of the speed measuring wheel to remove dust from its working area, reducing wear and slippage and improving detection accuracy. The dust removal mechanism includes two horizontal bars symmetrically arranged along the axis of the speed measuring wheel, with an exhaust groove on one side of each bar.

[0006] In one embodiment, a vertical rod is provided on the outer side of the rotary encoder, one end of which passes through and is slidably connected to the outer side of the frame. Two springs are provided on the rotary encoder, one end of which is connected to the outer side of the frame.

[0007] In one embodiment, the detection shaft of the rotary encoder is mounted with a rotating shaft passing through the frame via a coupling, and the speed measuring wheel is sleeved and mounted to the outside of the rotating shaft.

[0008] In one embodiment, a sleeve is rotatably fitted on the outer side of the rotating shaft, the sleeve is installed on the outer side of the rotary encoder, and a T-junction is provided between the sleeve and the two crossbars.

[0009] In one embodiment, a fan blade is fixedly sleeved on the outside of the rotating shaft and located inside a sleeve, and an air inlet is provided inside the sleeve.

[0010] In one embodiment, the vertical rod has a rectangular cross-section to limit the rotation encoder and reduce offset. The outer side of the vertical rod is coated with scale values, which allows users to visually observe the wear between the speed measuring wheel and the conveyor belt, achieving timely maintenance and repair.

[0011] In one embodiment, a sealing ring is provided at the connection between the rotating shaft and the sleeve to reduce gas leakage.

[0012] In one embodiment, a filter plate is installed inside the air inlet. The filter plate is detachable to reduce the mixing of external dust into the dust removal gas. Beneficial effects

[0013] 1. By setting up exhaust channels, when the speed measuring wheel follows the conveyor belt to perform the detection operation, the rotating shaft will drive the fan blades to move, so that the gas in the sleeve is sprayed along the exhaust channels to the area near the speed measuring wheel for dust removal and dust prevention, reducing the increased wear and slippage between the speed measuring wheel and the conveyor belt, and improving the detection accuracy. 2. By setting a spring, the spring traction combined with the weight of the rotary encoder improves the fit between the speed measuring wheel and the conveyor belt, reduces the occurrence of gaps due to wear, and ensures the detection effect of the speed measuring wheel. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of A in the middle; Figure 3 This is a schematic diagram of the speed measuring wheel and rotating shaft of this utility model; Figure 4 This is a cross-sectional schematic diagram of the sleeve and air inlet of this utility model; Figure 5 This is a schematic diagram of the structure of the three-way pipe and exhaust groove of this utility model.

[0016] Figure label: 100. Rotary encoder; 110. Speed ​​measuring wheel; 120. Spring; 130. Shaft; 131. Sleeve; 132. T-joint; 133. Fan blade; 134. Filter plate; 140. Vertical rod; 200. Frame; 300. Conveyor belt; 400. Dust removal mechanism; 410. Horizontal bar; 411. Exhaust chute. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] The following is combined Figures 1-5 This invention describes a belt speed detection device for belt conveyors.

[0019] In one embodiment, a belt speed detection device for a belt conveyor includes a rotary encoder 100 and a frame 200. A conveyor belt 300 is mounted on the frame 200. A speed measuring wheel 110 is mounted on the outer side of the rotary encoder 100 and contacts the inner side of the conveyor belt 300. The device also includes a dust removal mechanism 400, which is located on the outer side of the speed measuring wheel 110 and is used to remove dust from the working area of ​​the speed measuring wheel 110, thereby reducing wear and slippage and improving detection accuracy. The dust removal mechanism 400 includes two horizontal bars 410 symmetrically arranged along the axis of the speed measuring wheel 110, and an exhaust groove 411 is provided on one side of each horizontal bar 410.

[0020] like Figure 2 and Figure 3 As shown, a vertical rod 140 is provided on the outer side of the rotary encoder 100. One end of the vertical rod 140 passes through and is slidably connected to the outer side of the frame 200. Two springs 120 are provided on the rotary encoder 100. One end of the spring 120 is connected to the outer side of the frame 200.

[0021] In this embodiment, the conveyor belt 300 is started to operate. During its movement, the speed measuring wheel 110 rotates accordingly, enabling the rotary encoder 100 to obtain motion data. By comparing the data with conventional motion data, the movement of the conveyor belt 300 can be determined. During the detection process, gas is continuously sprayed from the exhaust groove 411 on the crossbar 410 to pneumatically remove dust from the area of ​​the speed measuring wheel 110. The blown gas can form a protective air curtain, reducing the occurrence of external dust approaching and reducing wear aggravation and slippage. The weight of the rotary encoder 100 and the traction force of the spring 120 can make the speed measuring wheel 110 fit tightly against the conveyor belt 300, reducing the occurrence of accidental separation due to wear. It should be noted that the spring 120 is in a slightly compressed state and is detachable, so users can replace it periodically to reduce the occurrence of failure. The exhaust range of the exhaust groove 411 can be adjusted according to the specifications of the speed measuring wheel 110 and the actual use requirements, and its exhaust shape can also be selected to form a planar air curtain or an arc-shaped air curtain according to the dust generation situation of the working environment. The conveyor belt 300 is driven by a drive motor and a reducer. This is a mature technology and will not be described in detail here.

[0022] like Figure 3 and Figure 4 As shown, the detection shaft of the rotary encoder 100 is mounted with a rotating shaft 130 that passes through the frame 200 via a coupling, and the speed measuring wheel 110 is sleeved and mounted on the outside of the rotating shaft 130.

[0023] The rotating shaft 130 is connected to the speed measuring wheel 110. After the speed measuring wheel 110 rotates, the rotating shaft 130 will drive the detection shaft to move, so that the rotary encoder 100 receives the motion and converts it into corresponding data to complete the detection operation.

[0024] like Figure 3 , Figure 4 and Figure 5 As shown, a sleeve 131 is rotatably sleeved on the outer side of the rotating shaft 130. The sleeve 131 is installed on the outer side of the rotary encoder 100. A three-way pipe 132 is provided between the sleeve 131 and the two crossbars 410.

[0025] The gas in the sleeve 131 is introduced into the exhaust groove 411 through the tee pipe 132 for gas injection, thereby achieving the effect of gas dust removal.

[0026] It should be noted that a through groove is provided between the sleeve 131 and the frame 200 for the sleeve 131 to move up and down.

[0027] like Figure 4 As shown, a fan blade 133 is fixedly sleeved on the outside of the rotating shaft 130 and located inside the sleeve 131, and an air inlet is opened inside the sleeve 131.

[0028] During the rotation of the shaft 130, the fan blades 133 will follow the movement, thereby drawing the outside gas into the sleeve 131 through the air inlet, and then discharging it through the three-way pipe 132, thus completing the gas delivery.

[0029] like Figure 2 and Figure 3 As shown, the cross-section of the vertical rod 140 is rectangular, and the outer side of the vertical rod 140 is coated with scale values.

[0030] The rectangular vertical rod 140 reduces the possibility of unexpected offset or rotation of the rotary encoder 100. Combined with the scale value setting, it allows users to intuitively observe the positional changes of the vertical rod 140, thereby knowing the wear condition between the speed measuring wheel 110 and the conveyor belt 300, which facilitates timely maintenance.

[0031] like Figure 4 As shown, a sealing ring is provided at the connection between the rotating shaft 130 and the sleeve 131.

[0032] The use of sealing rings ensures airtightness at the connection points and reduces the occurrence of gas leakage.

[0033] like Figure 4 As shown, a filter plate 134 is installed inside the air inlet, and the filter plate 134 is detachable.

[0034] By using the filter plate 134, the occurrence of dust and impurities carried in the dust removal gas itself can be reduced, ensuring the cleanliness of the working area of ​​the speed measuring wheel 110, reducing wear and slippage. With the detachable design, users can regularly disassemble and clean the filter plate 134 to ensure the air intake effect.

[0035] Working principle: The rotary encoder 100 is mounted on the frame 200 with the vertical rod 140. With the weight of the rotary encoder 100 and the traction of the spring 120, the speed measuring wheel 110 is stably attached to the inner side of the conveyor belt 300. Then, the drive motor drives the conveyor belt 300 to move. During the movement, the speed measuring wheel 110 drives the rotating shaft 130 to move, so that the detection shaft of the rotary encoder 100 is driven to obtain detection data. During the movement of the rotating shaft 130, the fan blade 133 rotates, drawing in the outside air through the air inlet and then discharging it through the three-way pipe 132. The air is sprayed through the exhaust groove 411 on the horizontal bar 410 to wash both sides of the speed measuring wheel 110, performing dust removal and dust prevention operations to reduce dust entering the detection area. A PLC controller is installed on the frame 200. The signal control and signal receiving functions of this control device are existing mature technologies. Its internal structure and actual application will not be described in detail here. It can receive the signal data converted by the rotary encoder 100, so that users can be notified when the data is abnormal and perform timely maintenance.

[0036] It should be noted that the rotary encoder 100 and PLC controller mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the rotary encoder 100 and PLC controller can be powered by the built-in power supply or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A belt speed detection device for a belt conveyor, characterized in that, include: A rotary encoder (100) and a frame (200) are provided. A conveyor belt (300) is provided on the frame (200). A speed measuring wheel (110) is provided on the outside of the rotary encoder (100) and contacts the inside of the conveyor belt (300). It also includes a dust removal mechanism (400), which is located on the outside of the speed measuring wheel (110) and is used to remove dust from the working area of ​​the speed measuring wheel (110), thereby reducing wear and slippage and improving detection accuracy. The dust removal mechanism (400) includes two horizontal bars (410) symmetrically arranged along the axis of the speed measuring wheel (110), and an exhaust groove (411) is provided on one side of the horizontal bar (410).

2. The belt speed detection device for a belt conveyor according to claim 1, characterized in that, The rotary encoder (100) has a vertical rod (140) on its outer side. One end of the vertical rod (140) passes through and slides to the outer side of the frame (200). The rotary encoder (100) is provided with two springs (120), one end of which is connected to the outer side of the frame (200).

3. The belt speed detection device for a belt conveyor according to claim 1, characterized in that, The detection shaft of the rotary encoder (100) is connected to a rotating shaft (130) that passes through the frame (200) via a coupling, and the speed measuring wheel (110) is sleeved and installed on the outside of the rotating shaft (130).

4. The belt speed detection device for a belt conveyor according to claim 3, characterized in that, A sleeve (131) is rotatably sleeved on the outside of the rotating shaft (130). The sleeve (131) is installed on the outside of the rotary encoder (100). A three-way pipe (132) is provided between the sleeve (131) and the two crossbars (410).

5. The belt speed detection device for a belt conveyor according to claim 4, characterized in that, The outer side of the rotating shaft (130) is fixedly fitted with a fan blade (133) inside the sleeve (131), and the inside of the sleeve (131) is provided with an air inlet.

6. The belt speed detection device for a belt conveyor according to claim 2, characterized in that, The cross-section of the vertical rod (140) is rectangular, and the outer side of the vertical rod (140) is coated with scale values.

7. The belt speed detection device for a belt conveyor according to claim 4, characterized in that, A sealing ring is provided at the connection between the rotating shaft (130) and the sleeve (131).

8. The belt speed detection device for a belt conveyor according to claim 5, characterized in that, The air inlet is equipped with a filter plate (134), which is detachable.

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