Anti-pinch roller device and conveying system

Abstract

The application discloses a kind of anti-pinch roller device and conveying system.The anti-pinch roller device includes two supports, sensing roller, droop piece and speed measuring piece.Each support has a first end and a second end, and has a connecting portion between the two ends, which is rotatably connected with the belt conveyor.The sensing roller is connected with the first end.The droop piece is connected with at least one second end, for making the sensing roller move upward and fit with the conveying belt.The speed measuring piece is installed on the sensing roller for measuring the rotational speed of the sensing roller.The conveying belt drives the sensing roller to rotate, so that the rotational speed of the sensing roller is a preset speed value.If the belt conveyor is jammed, the goods will be rolled into the conveying belt and the sensing roller, causing the rotational speed of the sensing roller to change.The speed measuring piece sends a speed signal to the control unit of the belt conveyor, and the control unit stops the belt conveyor when the rotational speed is not the preset speed value, to prevent continuous jamming and damage to the goods.

Description

Technical Field

[0001] This invention relates to the field of logistics sorting technology, specifically to an anti-pinch roller device and a conveying system. Background Technology

[0002] In the logistics industry, a large number of belt conveyors are commonly used to transport goods. However, due to the inherent characteristics of belt conveyors, adjacent conveyors cannot make contact and always maintain a gap. Therefore, this gap is prone to trapping, meaning that if the conveyor belt surface has sticky substances adhering to it, or if thin goods (such as envelopes) are being transported, the goods can get caught in the gap, causing damage and even injury. Even with existing technology that installs transition plates between adjacent conveyors, the transition plates cannot make contact with the two conveyors, and a gap still exists between the transition plates and the conveyors, making it impossible to completely prevent goods from getting caught in the gap and causing damage. Summary of the Invention

[0003] This application provides an anti-pinch roller device and a conveying system to solve the problem in the prior art where the gap between two adjacent belt conveyors is prone to clamping, resulting in damage to goods.

[0004] On the one hand, this application provides an anti-pinch roller device for installation at the end of a belt conveyor and located below the conveyor belt of the belt conveyor. The anti-pinch roller device includes: two support members, a sensing roller, a drooping member, and a speed measuring member.

[0005] Each of the aforementioned support members has a first end and a second end, and a connecting portion located between the two ends, the connecting portion being rotatably connected to the belt conveyor;

[0006] The sensing roller is connected via the first end;

[0007] The drooping member is connected to at least one of the second ends and is used to drive the second ends to move downward so that the sensing roller moves upward and fits against the conveyor belt.

[0008] The speed measuring element is installed on the sensing roller and is used to measure the rotational speed of the sensing roller.

[0009] In some possible implementations, the sensing roller includes a bonding roller and two carrier members respectively connected to both ends of the bonding roller; the two carrier members are respectively connected to one end of the support member; the bonding roller is bonded to the conveyor belt.

[0010] In some possible implementations, each of the carriers includes a carrier shaft fixedly connected to the support member and an outer roller rotatably connected to the carrier shaft; the outer roller is fixedly connected to the bonding roller.

[0011] In some possible implementations, the speed measuring element is installed inside the carrier.

[0012] In some possible implementations, the speed measuring element includes a turntable fixedly connected to the outer roller and a sensor fixedly connected to the bearing shaft;

[0013] The turntable has a plurality of protrusions arranged and spaced apart along its rotation direction, and the plurality of protrusions are used to pass sequentially through the sensing area of ​​the sensor when the turntable rotates.

[0014] In some possible implementations, the sensor includes a light generator and a light receiver arranged opposite to each other, the light generator being located on one side of the plurality of protrusions and the light receiver being located on the other side of the plurality of protrusions;

[0015] The plurality of protrusions are used to pass sequentially through the sensing area when the turntable rotates, the sensing area being between the light generator and the light receiver.

[0016] In some possible implementations, the sensor is a proximity switch located on one side of the plurality of protrusions;

[0017] The plurality of protrusions are used to pass sequentially through the sensing area of ​​the proximity switch as the turntable rotates.

[0018] In some possible implementations, the multiple protrusions are of the same size and / or the spacing between the multiple protrusions is the same.

[0019] In some possible implementations, the drooping member is a counterweight block connected to the second end of the support member, and the weight of the counterweight block is greater than the weight of the sensing roller.

[0020] In some possible implementations, the drooping member is an elastic member, with its two ends connected to the belt conveyor and the second end of the support member, respectively.

[0021] In some possible implementations, the elastic element is a compression spring, which is located above the second end of the support member, and the two ends of the compression spring are respectively connected to the belt conveyor and the second end of the support member.

[0022] In some possible implementations, the elastic element is a tension spring located below the second end of the support member, with both ends of the tension spring connected to the belt conveyor and the second end of the support member, respectively.

[0023] In some possible implementations, the elastic element is a torsion spring located between the belt conveyor and the second end of the support member, with the two ends of the torsion spring respectively connected to the second end of the belt conveyor and the second end of the support member.

[0024] In some possible implementations, the distance between the connecting portion and the first end of the support member is smaller than the distance between the connecting portion and the second end of the support member.

[0025] On the other hand, this application also provides a conveying system, including: two belt conveyors and the above-mentioned anti-pinch roller device;

[0026] The two belt conveyors are arranged along the transmission direction, with the first belt conveyor transmitting towards the second belt conveyor;

[0027] The anti-pinch roller device is installed at the end of the first belt conveyor near the second belt conveyor and is located below the conveyor belt of the first belt conveyor.

[0028] The anti-pinch roller device provided in this application is used for installation at the end of a belt conveyor and located below the conveyor belt. The anti-pinch roller device includes: two support members, a sensing roller, a drooping member, and a speed measuring member. Each support member has a first end and a second end, and a connecting portion located between the two ends, the connecting portion being rotatably connected to the belt conveyor. The sensing roller is connected via the first end. The drooping member is connected to at least one second end and is used to drive the second end downwards, causing the sensing roller to move upwards and come into contact with the conveyor belt. The speed measuring member is mounted on the sensing roller and is used to measure the rotational speed of the sensing roller. The conveyor belt drives the sensing roller to rotate, keeping the roller's speed at a preset value. If the conveyor belt gets caught, the goods will be pulled between the conveyor belt and the sensing roller, causing the roller's speed to change. Therefore, when the speed of the sensing roller measured by the speed measuring device is not the preset value, it indicates that the conveyor belt is caught. The speed measuring device can send the signal corresponding to the roller's speed to the conveyor belt's control unit. When the roller's speed is not the preset value, the control unit can stop the conveyor belt from working, preventing continuous catching and damage to the goods. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a conveying system provided in an embodiment of this application;

[0031] Figure 2 This is a first-view schematic diagram of an anti-pinch roller device and a belt conveyor provided in an embodiment of this application;

[0032] Figure 3 This is a second-view schematic diagram of an anti-pinch roller device and a belt conveyor provided in an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of an anti-pinch roller device provided in an embodiment of this application;

[0034] Figure 5 yes Figure 4 An enlarged view of point A;

[0035] Figure 6 This is a cross-sectional view of the sensing roller of an anti-pinch roller device provided in an embodiment of this application;

[0036] Figure 7 This is a cross-sectional view of the support member of an anti-pinch roller device provided in an embodiment of this application;

[0037] Figure 8 This is a cross-sectional view of the support component and speed measuring component of the anti-pinch roller device provided in an embodiment of this application;

[0038] Figure 9 This is an exploded view of the support component and speed measuring component of the anti-pinch roller device provided in an embodiment of this application;

[0039] Figure 10 This is a schematic diagram of an anti-pinch roller device and a belt conveyor provided in another embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, it should be noted that, unless otherwise expressly 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] The anti-pinch roller device of this application can be applied in sorting areas, such as express delivery sorting centers. The anti-pinch roller device can be installed at the end of a belt conveyor and located below the conveyor belt. The anti-pinch roller device includes a sensing roller that is in contact with the conveyor belt. The conveyor belt can drive the sensing roller to rotate, making the rotational speed of the sensing roller a preset speed value. If the belt conveyor experiences a pinch, the goods will be caught between the conveyor belt and the sensing roller, causing a change in the rotational speed of the sensing roller. Therefore, when the speed of the sensing roller measured by the speed measuring device is not the preset speed value, it indicates that the belt conveyor has experienced a pinch. The speed measuring device can send a signal corresponding to the rotational speed of the sensing roller to the control unit of the belt conveyor. When the rotational speed of the sensing roller is not the preset speed value, the control unit can stop the belt conveyor from working, avoiding continuous pinching and damage to the goods.

[0044] Please see Figures 1 to 10 This application provides an anti-pinch roller device 100, which is installed at the end of a belt conveyor 200 and located below the conveyor belt 201 of the belt conveyor 200. The anti-pinch roller device 100 includes: two support members 11, a sensing roller 2, a drooping member 3 and a speed measuring member 4.

[0045] Each support member 11 has a first end and a second end, and a connecting part 101 located between the two ends, the connecting part 101 being rotatably connected to the belt conveyor 200;

[0046] The sensing roller 2 is connected to the first end;

[0047] The drooping member 3 is connected to at least one second end and is used to drive the second end to move downward so that the sensing roller 2 moves upward and fits against the conveyor belt 201.

[0048] The speed measuring element 4 is installed on the induction roller 2 and is used to measure the rotational speed of the induction roller 2.

[0049] The structure of the support member 11 is not limited. The two support members may or may not be connected. The number is only specified to facilitate the connection between the two ends and the support members, based on the fact that the induction roller generally has two ends, and does not indicate a limitation on the number. Examples of support members and other structures will be given below.

[0050] Additionally, it should be noted that when two belt conveyors 200 are arranged along the transmission direction F, and the first belt conveyor 200 is transmitting towards the second belt conveyor 200, the conveyor belt 201 of the first belt conveyor 200 rotates downwards and the conveyor belt 201 of the second belt conveyor 200 rotates upwards at the gap between the two belt conveyors 200. Therefore, thinner goods on the first belt conveyor 200 are easily caught between the conveyor belt 201 of the first belt conveyor 200 and other mechanisms of the first belt conveyor 200 (such as mounting plates or tension rollers), or one end of the goods may be stuck in the gap between the two belt conveyors 200, causing the belt conveyors 200 to become clamped.

[0051] The anti-pinch roller device 100 of this application can be installed at the end of the first belt conveyor 200 near the second belt conveyor 200, and located below the conveyor belt 201 of the first belt conveyor 200. The sensing roller 2 is connected to the first end of the support member 11, and the drooping member 3 is connected to the second end of the support member 11. The drooping member 3 refers to a component that can cause the second end of the support member 11 to move downward by gravity, elasticity, or other forces. The support member 11 has a connecting part 101 located between its two ends, that is, the connecting part 101 is located between the first end and the second end. The connecting part 101 is rotatably connected to the belt conveyor 200. Therefore, the drooping member 3 drives the second end of the support member 11 to move downward, which can cause the sensing roller 2 to move upward and fit against the conveyor belt 201. When the conveyor belt 201 rotates, it drives the sensing roller 2 to rotate, making the speed of the sensing roller 2 the preset speed value. If the belt conveyor 200 gets caught, the goods will be pulled between the conveyor belt 201 and the sensing roller 2, causing the sensing roller 2 to detach from the conveyor belt 201, resulting in a change in the speed of the sensing roller 2 (greater or less than the preset speed value). Therefore, when the speed of the sensing roller 2 measured by the speed measuring element 4 is not the preset speed value, it indicates that the belt conveyor 200 has been caught (e.g., by a PLC, microcontroller, or computer). The speed measuring element 4 can send the signal corresponding to the speed of the sensing roller 2 to the control unit of the belt conveyor 200. When the speed of the sensing roller 2 is not the preset speed value, the control unit can stop the belt conveyor 200 from working to avoid continuous catching and damage to the goods.

[0052] In some embodiments, the speed measuring element 4 and the control unit of the belt conveyor 200 can be wirelessly connected, and the speed measuring element 4 can wirelessly send signals to the control unit, thereby avoiding interference from the wiring harness on the rotation of the sensing roller 2.

[0053] In some embodiments, please refer to Figure 6 and Figure 7 The sensing roller 2 includes a bonding roller 21 and two support members 22 connected to both ends of the bonding roller 21. The two support members 22 are respectively connected to the first ends of two support members 11. The bonding roller 21 is bonded to the conveyor belt 201. That is, this application sets the sensing roller 2 as a combination of the bonding roller 21 and the two support members 22, which is beneficial for replacing and maintaining the bonding roller 21 and the support members 22. Furthermore, the bonding roller 21 with a matching size can be replaced according to the size of the conveyor belt 201, thereby improving the applicability of the anti-pinch roller device 100.

[0054] In addition, the bonding roller 21 can be a cylindrical, unpowered roller, and the length direction of the bonding roller 21 can be consistent with the width direction of the conveyor belt 201.

[0055] In this embodiment, please refer to Figure 7Each carrier component 22 includes a carrier shaft 221 fixedly connected to the support component 11, and an outer roller 222 rotatably connected to the carrier shaft 221; the outer roller 222 is fixedly connected to the bonding roller 21. That is, the outer roller 222 and the bonding roller 21 can rotate synchronously, and the conveyor belt 201 can drive the bonding roller 21 to rotate, thereby driving the outer roller 222 to rotate, so that the conveyor belt 201 can stably drive the entire sensing roller 2 to rotate, so that the rotation speed of the sensing roller 2 can be measured by the speed measuring component 4 to determine whether the belt conveyor 200 is clamped.

[0056] In this embodiment, the outer roller 222 and the bearing shaft 221 are rotatably connected by at least one bearing 223. That is, the inner ring of the bearing 223 is fixedly connected to the bearing shaft 221, the outer ring of the bearing 223 is fixedly connected to the outer roller 222, and the inner and outer rings of the bearing 223 are rotatably connected by rolling elements (such as balls or rollers).

[0057] In this embodiment, the outer roller 222 and the bonding roller 21 can be fixedly connected and detachably connected by interference fit, bolt connection or other means, which is not limited in this application.

[0058] In this embodiment, please refer to Figure 6 and Figure 8 The speed measuring element 4 is installed inside the carrier 22. That is, the speed measuring element 4 is installed inside the outer roller 222. The outer roller 222 can shield and protect the speed measuring element 4, preventing dust from the external environment or goods that cause clamping from affecting the measurement accuracy of the speed measuring element 4, thereby improving the measurement accuracy of the speed measuring element 4. In addition, the outer roller 222 can also prevent the conveyor belt 201 or goods that cause clamping from damaging the speed measuring element 4. Of course, the speed measuring element 4 can also be installed outside the carrier 22, for example, the speed measuring element 4 can be installed on a part of the carrier shaft 221 located outside the outer roller 222. This application does not make any limitation.

[0059] In this embodiment, the carrier 22 may also include a dust cover 224 connected to one end of the outer roller 222 and sealing the inside of the outer roller 222, to further prevent dust from the external environment from entering the inside of the outer roller 222, thereby further preventing dust from the external environment from affecting the measurement accuracy of the speed measuring component 4.

[0060] In this embodiment, please refer to Figure 6 , Figure 8 and Figure 9The speed measuring element 4 includes a turntable 41 fixedly connected to the outer roller 222 and a sensor 42 fixedly connected to the bearing shaft 221. The turntable 41 has a plurality of protrusions 411 arranged and spaced apart along its rotation direction. The plurality of protrusions 411 are used to pass through the sensing area of ​​the sensor 42 in sequence when the turntable 41 rotates. When the outer roller 222 rotates, it can drive multiple protrusions 411 on the turntable 41 to rotate. When the multiple protrusions 411 rotate, they will pass through the sensing area of ​​the sensor 42 in sequence. A measuring hole 412 can be defined between two adjacent protrusions 411. Multiple measuring holes 412 are defined between multiple protrusions 411, and the multiple measuring holes 412 will also pass through the sensing area of ​​the sensor 42 in sequence. For example, the sensor 42 can be a photoelectric sensor 42. The sensor 42 can include a light generator and a light receiver arranged opposite to each other. The light generator is located on one side of the multiple protrusions 411, and the light receiver is located on the other side of the multiple protrusions 411. The multiple protrusions 411 are used to pass through the sensing area in sequence when the turntable 41 rotates. The sensing area is between the light generator and the light receiver, that is, the path of the light emitted by the light generator to the light receiver.

[0061] When the measuring hole 412 passes through the sensing area of ​​the sensor 42, the measuring hole 412 does not block the sensor 42, and the sensor 42 can be triggered (this triggering means that the light receiver can receive the light signal). When the protrusion 411 passes through the sensing area of ​​the sensor 42, the protrusion 411 blocks the sensor 42, and the sensor 42 is not triggered. Then, the sensor 42 can calculate the rotational speed of the turntable 41 by the triggering time of a measuring hole 412 and the distance traveled by the measuring hole 412 through the sensing area of ​​the sensor 42 (this distance can be the width of the measuring hole 412, that is, the distance between two adjacent protrusions 411). Thus, the rotational speeds of the outer roller 222 and the bonding roller 21 can be obtained. The distance traveled by the measuring hole 412 through the sensing area of ​​the sensor 42 is related to the distance between two adjacent protrusions 411. Therefore, the distance traveled by the measuring hole 412 through the sensing area of ​​the sensor 42 is a constant value. When the rotational speed of the turntable 41 is different, the triggering time of a measuring hole 412 is also different. Therefore, the rotational speed of the turntable 41 can be accurately obtained to improve the measurement accuracy. Furthermore, the sensor 42 can measure each measuring hole 412 passing through the sensing area of ​​the sensor 42 once, realizing rapid and multiple measurements of the rotation speed of the turntable 41, thereby improving measurement efficiency and ensuring that the sensor 42 can measure the change in the rotation speed of the turntable 41 as soon as the belt conveyor 200 is clamped, thus enabling rapid judgment of the belt conveyor 200 clamping and avoiding continuous clamping that could lead to damage to goods.

[0062] Alternatively, sensor 42 can be a proximity switch located on one side of a plurality of protrusions 411, which are used to sequentially pass through the sensing area of ​​the proximity switch when the turntable 41 rotates. For example, when the proximity switch is a capacitive proximity switch, the sensing area of ​​the proximity switch refers to the induced electric field in front of the proximity switch. When the proximity switch is an inductive proximity switch, the sensing area of ​​the proximity switch refers to the induced magnetic field in front of the proximity switch. When the protrusion 411 passes through the sensing area of ​​the proximity switch and blocks the proximity switch, the proximity switch can be triggered. When the measuring hole 412 passes through the sensing area of ​​the proximity switch without blocking the sensor 42, the sensor 42 is not triggered. The sensor 42 can calculate the rotational speed of the turntable 41 by the triggering time of a protrusion 411 and the distance traveled by the protrusion 411 through the sensing area of ​​the sensor 42 (this distance can be the width of the protrusion 411), thereby obtaining the rotational speed of the outer roller 222 and the bonding roller 21. The distance traveled by the protrusion 411 through the sensing area of ​​the sensor 42 is related to the size of the protrusion 411 itself. Therefore, the path of the protrusion 411 through the sensing area of ​​the sensor 42 is a constant value. When the rotational speed of the turntable 41 is different, the triggering time of a protrusion 411 is also different. Therefore, the rotational speed of the turntable 41 can be accurately obtained to improve the measurement accuracy. Furthermore, the sensor 42 can measure each protrusion 411 passing through the sensing area of ​​the sensor 42 once, realizing rapid and multiple measurements of the rotation speed of the turntable 41, thereby improving measurement efficiency and ensuring that the sensor 42 can measure the change in the rotation speed of the turntable 41 as soon as the belt conveyor 200 is clamped, thus enabling rapid judgment of the belt conveyor 200 clamping and avoiding continuous clamping that could lead to damage to goods.

[0063] In this embodiment, the multiple protrusions 411 are of the same size and / or the spacing between the multiple protrusions 411 is the same (i.e., the multiple measuring holes 412 are of the same size), so that when the rotation speed of the turntable 41 does not change, the sensor 42 measures the rotation speed of the turntable 41 multiple times and the value is the same, which improves the measurement accuracy and avoids misjudging that the belt conveyor 200 is clamped.

[0064] In this embodiment, the cross-sectional shape of the protrusion 411 can be rectangular, trapezoidal or triangular, and this application does not impose any restrictions.

[0065] In this embodiment, please refer to Figure 8 and Figure 9 The speed measuring component 4 may also include a spacer 43, which may be circular in shape. The spacer 43 may be bolted to the outer roller 222. The spacer 43 is hollow inside and has a mounting groove. The turntable 41 may be installed in the mounting groove by snap-fit ​​or adhesive, so as to achieve synchronous rotation between the turntable 41 and the outer roller 222.

[0066] In some embodiments, please refer to Figures 2 to 4The drooping part 3 is a counterweight block, which is connected to the second end of the support 11. The weight of the counterweight block is greater than the weight of the sensing roller 2. Thus, the weight of the counterweight block ensures that the second end of the support 11 can move downward, so as to ensure that the sensing roller 2 moves upward and fits with the conveyor belt 201. This allows the speed of the sensing roller 2 to be measured by the speed measuring element 4 to determine whether the belt conveyor 200 is stuck, thereby avoiding damage to the goods.

[0067] In addition, the weight of the counterweight can be controlled to make the sensing roller 2 and the conveyor belt 201 softly fit together. Soft fit means that the sensing roller 2 and the conveyor belt 201 fit together without the sensing roller 2 causing the conveyor belt 201 to deform and generate tension. This ensures that when the belt conveyor 200 gets stuck, the goods can be rolled between the conveyor belt 201 and the sensing roller 2. This allows the speed of the sensing roller 2 to be measured by the speed measuring element 4 to determine whether the belt conveyor 200 has gotten stuck, thereby avoiding damage to the goods.

[0068] In this embodiment, please refer to Figure 4 and Figure 5 The number of counterweights can be two, and the two counterweights can be connected to the second end of the two support members 11 respectively.

[0069] In addition, the anti-pinch roller device may also include a bearing rod 12 connected to the second end of the two support members 11, and a counterweight may also be installed on the bearing rod 12, that is, the counterweight is installed on both the second end of the support member 11 and the bearing rod 12 at the same time, or the counterweight may not be installed on the second end of the support member 11, but only on the bearing rod 12.

[0070] In this embodiment, please refer to Figure 5 Both support members 11 have a connecting part 101 for rotatable connection with the belt conveyor 200. The connecting part 101 can be a connecting hole that can be connected to a rotating shaft on the belt conveyor 200, or the connecting part 101 can be a connecting shaft that can be connected to a rotating hole on the belt conveyor 200.

[0071] In some embodiments, please refer to Figure 10 The drooping member 3 is an elastic member, with its two ends connected to the belt conveyor 200 and the second end of the support member 11, respectively. That is, the elastic member is in a deformed state between the belt conveyor 200 and the second end of the support member 11, and the elastic force of the elastic member is downward. The elastic force of the elastic member ensures that the second end of the support member 11 moves downward, ensuring that the sensing roller 2 moves upward and fits against the conveyor belt 201. This allows the speed of the sensing roller 2 to be measured by the speed measuring member 4 to determine whether the belt conveyor 200 is experiencing clamping, thereby preventing damage to the goods.

[0072] In this embodiment, there can be two elastic elements, and the two elastic elements are respectively connected to the second ends of the two support members 11.

[0073] In this embodiment, the elastic element can be a compression spring. The compression spring is located above the second end of the support member 11, and the two ends of the compression spring are respectively connected to the belt conveyor 200 and the second end of the support member 11. The compression spring is in a deformed state between the belt conveyor 200 and the second end of the support member 11, and the spring force of the compression spring is downward, so that the spring force can ensure that the second end of the support member 11 moves downward.

[0074] Alternatively, the elastic element can be a tension spring, which is located below the second end of the support member 11, and the two ends of the tension spring are respectively connected to the belt conveyor 200 and the second end of the support member 11. The tension spring is in a deformed state between the belt conveyor 200 and the second end of the support member 11, and the spring force of the tension spring is downward, so that the spring force can ensure that the second end of the support member 11 moves downward.

[0075] Alternatively, the elastic element can be a torsion spring, which can be located between the belt conveyor 200 and the second end of the support member 11, with the two ends of the torsion spring connected to the second end of the belt conveyor 200 and the second end of the support member 11 respectively. The torsion spring is in a deformed state between the belt conveyor 200 and the second end of the support member 11, and the spring force of the torsion spring is downward, so that the spring force can ensure that the second end of the support member 11 moves downward.

[0076] In some embodiments, please refer to Figure 5 The distance between the connecting part 101 and the first end of the support member 11 is smaller than the distance between the connecting part 101 and the second end of the support member 11. Therefore, the connecting part 101 acts as a fulcrum, the distance between the connecting part 101 and the first end of the support member 11 is equivalent to the lever arm between the sensing roller 2 and the fulcrum, and the distance between the connecting part 101 and the second end of the support member 11 is equivalent to the lever arm between the drooping member 3 and the fulcrum. By setting the lever arm between the drooping member 3 and the fulcrum to be greater than the lever arm between the sensing roller 2 and the fulcrum, this application can further ensure that the drooping member 3 can drive the second end of the support member 11 to move downwards, ensuring that the sensing roller 2 moves upwards and fits against the conveyor belt 201. This allows the speed of the sensing roller 2 to be measured by the speed measuring element 4 to determine whether the belt conveyor 200 is jammed, thereby preventing damage to the goods.

[0077] Furthermore, the two support members 11 can be the same size. The positions of the connecting portions 101 on the two support members 11 can also be the same.

[0078] Please see Figure 1 Based on the anti-pinch roller device 100 described above, this application embodiment also provides a conveying system, including: two belt conveyors 200 and the anti-pinch roller device 100 described above;

[0079] Two belt conveyors 200 are arranged along the transmission direction F, with the first belt conveyor 200 transmitting towards the second belt conveyor 200;

[0080] The anti-pinch roller device 100 is installed at the end of the first belt conveyor 200 near the second belt conveyor 200 and is located below the conveyor belt 201 of the first belt conveyor 200.

[0081] It should be noted that in the gap between the two belt conveyors 200, the conveyor belt 201 of the first belt conveyor 200 rotates downward and the conveyor belt 201 of the second belt conveyor 200 rotates upward. Therefore, thinner goods on the first belt conveyor 200 are easily caught between the conveyor belt 201 of the first belt conveyor 200 and other mechanisms of the first belt conveyor 200 (such as mounting plates or tension rollers), or one end of the goods may be stuck in the gap between the two belt conveyors 200, causing the belt conveyors 200 to become clamped.

[0082] The anti-pinch roller device 100 of this application can be installed at the end of the first belt conveyor 200 near the second belt conveyor 200, and located below the conveyor belt 201 of the first belt conveyor 200. The sensing roller 2 is connected to the first end of the support member 11, and the drooping member 3 is connected to the second end of the support member 11. The support member 11 has a connecting part 101 located between its two ends, that is, the connecting part 101 is located between the first end and the second end. The connecting part 101 is rotatably connected to the belt conveyor 200. Therefore, the drooping member 3 drives the second end of the support member 11 to move downward, which can make the sensing roller 2 move upward and fit against the conveyor belt 201. When the conveyor belt 201 rotates, it drives the sensing roller 2 to rotate, making the speed of the sensing roller 2 the preset speed value. If the belt conveyor 200 gets caught, the goods will be pulled between the conveyor belt 201 and the sensing roller 2, causing the sensing roller 2 to detach from the conveyor belt 201, resulting in a change in the speed of the sensing roller 2 (greater or less than the preset speed value). Therefore, when the speed of the sensing roller 2 measured by the speed measuring element 4 is not the preset speed value, it indicates that the belt conveyor 200 has been caught (e.g., by a PLC, microcontroller, or computer). The speed measuring element 4 can send the signal corresponding to the speed of the sensing roller 2 to the control unit of the belt conveyor 200. When the speed of the sensing roller 2 is not the preset speed value, the control unit can stop the belt conveyor 200 from working to avoid continuous catching and damage to the goods.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0084] In practice, each of the above components or structures can be implemented as an independent entity or can be arbitrarily combined to be implemented as the same or several entities. For specific implementation of each of the above components or structures, please refer to the previous embodiments, which will not be repeated here.

[0085] The anti-pinch roller device and conveying system provided by the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An anti-pinch roller device, characterized in that, The anti-pinch roller device is designed to be installed at the end of a belt conveyor and located below the conveyor belt of the belt conveyor. It includes two support members, a sensing roller, a drooping member, and a speed measuring member. Each of the aforementioned support members has a first end and a second end, and a connecting portion located between the two ends, the connecting portion being rotatably connected to the belt conveyor; The sensing roller is connected via the first end; The drooping member is connected to at least one of the second ends and is used to drive the second ends to move downward so that the sensing roller moves upward and fits against the conveyor belt. The speed measuring element is installed on the sensing roller to measure the rotational speed of the sensing roller and send the signal corresponding to the rotational speed of the sensing roller to the control unit of the belt conveyor. If the rotational speed of the sensing roller is not the preset speed value, the control unit controls the belt conveyor to stop working.

2. The anti-pinch roller device as described in claim 1, characterized in that, The sensing roller includes a bonding roller and two support members connected to both ends of the bonding roller respectively; the two support members are respectively connected to the first ends of the two support members; the bonding roller is bonded to the conveyor belt.

3. The anti-pinch roller device as described in claim 2, characterized in that, Each of the aforementioned carrier components includes a carrier shaft fixedly connected to the support component and an outer roller rotatably connected to the carrier shaft; the outer roller is fixedly connected to the bonding roller.

4. The anti-pinch roller device as described in claim 3, characterized in that, The speed measuring component is installed inside the carrier component.

5. The anti-pinch roller device as described in claim 3, characterized in that, The speed measuring component includes a turntable fixedly connected to the outer roller and a sensor fixedly connected to the bearing shaft; The turntable has a plurality of protrusions arranged and spaced apart along its rotation direction, and the plurality of protrusions are used to pass sequentially through the sensing area of ​​the sensor when the turntable rotates.

6. The anti-pinch roller device as described in claim 5, characterized in that, The sensor includes a light generator and a light receiver arranged opposite to each other, the light generator being located on one side of the plurality of protrusions and the light receiver being located on the other side of the plurality of protrusions; The plurality of protrusions are used to pass sequentially through the sensing area when the turntable rotates, the sensing area being between the light generator and the light receiver.

7. The anti-pinch roller device as described in claim 5, characterized in that, The sensor is a proximity switch, which is located on one side of the plurality of protrusions; The plurality of protrusions are used to pass sequentially through the sensing area of ​​the proximity switch as the turntable rotates.

8. The anti-pinch roller device as described in claim 5, characterized in that, The protrusions are of the same size and / or the spacing between the protrusions is the same.

9. The anti-pinch roller device according to any one of claims 1 to 8, characterized in that, The drooping component is a counterweight, which is connected to the second end of the support component. The weight of the counterweight is greater than the weight of the sensing roller.

10. The anti-pinch roller device according to any one of claims 1 to 8, characterized in that, The drooping member is an elastic member, and its two ends are respectively connected to the belt conveyor and the second end of the support member.

11. The anti-pinch roller device as described in claim 10, characterized in that, The elastic element is a compression spring, which is located above the second end of the support member, and the two ends of the compression spring are respectively connected to the belt conveyor and the second end of the support member.

12. The anti-pinch roller device as described in claim 10, characterized in that, The elastic element is a tension spring, which is located below the second end of the support member, and the two ends of the tension spring are respectively connected to the belt conveyor and the second end of the support member.

13. The anti-pinch roller device as described in claim 10, characterized in that, The elastic element is a torsion spring, which is located between the second end of the belt conveyor and the support member, and the two ends of the torsion spring are respectively connected to the second end of the belt conveyor and the support member.

14. The anti-pinch roller device according to any one of claims 1 to 8, characterized in that, The distance between the connecting part and the first end of the support member is less than the distance between the connecting part and the second end of the support member.

15. A conveying system, characterized in that, include: Two belt conveyors and an anti-pinch roller device as described in any one of claims 1 to 14; The two belt conveyors are arranged along the transmission direction, with the first belt conveyor transmitting towards the second belt conveyor; The anti-pinch roller device is installed at the end of the first belt conveyor near the second belt conveyor and is located below the conveyor belt of the first belt conveyor.

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