Position adjustment device and method for gravity tensioning device and belt conveyor

Abstract

The present invention provides a position adjustment device, method and belt conveyor of a gravity tensioning device, wherein the position adjustment device of the gravity tensioning device comprises: a position detection device, an adjustment device and an electric winch, wherein the detection device is connected to one end of the adjustment device, the detection device detects the position signal of the weight in the belt conveyor gravity tensioning device, and sends the position signal to the adjustment device; the other end of the adjustment device is connected to one end of the electric winch, the adjustment device receives the position signal, and sends a rotation instruction to the electric winch according to the position signal; the electric winch is connected to the weight, the electric winch receives the rotation instruction, and adjusts the position of the weight according to the rotation instruction. By implementing the present invention, the automatic adjustment of the position of the gravity tensioning device is realized, human resources are saved, and omissions in manual operation are avoided, the adjustment error is small, and the occurrence of accidents of the weight hitting the top or falling can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of conveyor equipment, and more specifically to a position adjustment device and method for a gravity tensioning device, and a belt conveyor. Background Technology

[0002] The tensioning device is an essential component for ensuring the normal operation of a belt conveyor. During the operation of the conveyor, it is used to ensure that the conveyor belt has appropriate tension at the point of departure of the drive drum, to prevent the conveyor belt from slipping, and to prevent material spillage caused by the slack of the conveyor belt between the two sets of idlers. It is also used to compensate for the permanent deformation of the conveyor belt and the elastic elongation during start-up and stable operation under different working conditions.

[0003] Gravity tensioning devices are the most widely used type of tensioning device. They rely on the weight of a counterweight to provide tension, maintaining a constant tension under various operating conditions and automatically compensating for belt elongation. While the tension force of a gravity tensioning device cannot be adjusted, the tension displacement is variable. Because the weight of the counterweight box can range from two or three tons to over ten tons, belt conveyors are prone to accidents such as counterweight overshooting or falling due to tension changes under high loads and unexpected conditions, threatening the safety of on-site personnel and causing irreparable losses.

[0004] To avoid the aforementioned accidents, the adjustment of the counterweight position in gravity tensioning devices is currently mostly done manually using an electric winch. Specifically, if the operator determines the counterweight position is too low, they operate the "winch forward" button on the control box in the enclosed tensioning compartment to raise the counterweight; if the operator determines the counterweight position is too high, they operate the "winch reverse" button to lower the counterweight. This manual adjustment method is labor-intensive, especially for long-distance conveyor belts, where operators frequently need to travel to the enclosed tensioning compartments along the route for manual adjustment. Furthermore, this manual adjustment relies solely on the operator's visual observation and experience, leading to significant errors in positioning. Moreover, it places high demands on the operator; any negligence or improper operation can still cause the counterweight to overshoot or fall, adversely affecting equipment and production operations. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the problems of the existing technology where the position adjustment of the counterweight of the gravity tensioning device of the belt conveyor relies on manual operation, mainly on the operator's operating experience, which requires high skill from the operator, involves a large workload, and has a large position adjustment error. Once the operator is negligent or operates improperly, the counterweight may still cause accidents such as the counterweight hitting the top or falling, which will have an adverse impact on the equipment and production operation.

[0006] According to a first aspect, embodiments of the present invention provide a position adjustment device for a gravity tensioning device, comprising: a position detection device, an adjustment device, and an electric winch, wherein the position detection device is connected to one end of the adjustment device, the position detection device detects the position signal of a counterweight in the gravity tensioning device of a belt conveyor, and sends the position signal to the adjustment device; the other end of the adjustment device is connected to one end of the electric winch, the adjustment device receives the position signal, and sends a rotation command to the electric winch according to the position signal; the electric winch is connected to the counterweight, the electric winch receives the rotation command, and adjusts the position of the counterweight according to the rotation command.

[0007] In conjunction with the first aspect, in the first embodiment of the first aspect, the position detection device includes: a first detection element and a second detection element, wherein the first detection element is disposed at a preset highest position of the hammer, and when the position of the hammer reaches the preset highest position, the position signal detected by the first detection element is a high position signal; the second detection element is disposed at a preset lowest position of the hammer, and when the position of the hammer reaches the preset lowest position, the position signal detected by the second detection element is a low position signal.

[0008] In conjunction with the first aspect, in the second embodiment of the first aspect, the first detection element and the second detection element are infrared sensors.

[0009] In conjunction with the first aspect, in the third embodiment of the first aspect, the position detection device further includes: a digital-to-analog converter, which converts the position signal into an analog signal and sends the analog signal to the adjustment device.

[0010] In conjunction with the first aspect, in the fourth embodiment of the first aspect, the rotation command includes: a forward rotation command and a reverse rotation command, wherein when the position signal is a high position signal, the adjusting device sends a reverse rotation command to the electric winch; when the position signal is a low position signal, the adjusting device sends a forward rotation command to the electric winch.

[0011] In conjunction with the first aspect, in the fifth embodiment of the first aspect, when the rotation command is a forward rotation command, the electric winch rotates forward and raises the position of the counterweight; when the rotation command is a reverse rotation command, the electric winch reverses and lowers the position of the counterweight.

[0012] In conjunction with the first aspect, in the sixth embodiment of the first aspect, the position adjustment device of the gravity tensioning device further includes: an alarm device, which is connected to the adjustment device and is used to issue an alarm based on the position signal.

[0013] In conjunction with the first aspect, in the seventh embodiment of the first aspect, when the position signal is the high position signal, the alarm device performs a high position alarm; when the position signal is the low position signal, the alarm device performs a low position alarm.

[0014] According to a second aspect, an embodiment of the present invention provides a belt conveyor, comprising: a drive motor, a conveyor belt, a counterweight tensioning device, and a position adjustment device for the gravity tensioning device provided in the first aspect of the present invention, wherein the drive motor is connected to the conveyor belt and drives the conveyor belt to move; the counterweight tensioning device is disposed on the conveyor belt and is used to tension the conveyor belt; and the position adjustment device is used to adjust the position of the counterweight in the counterweight tensioning device.

[0015] According to a third aspect, embodiments of the present invention provide a method for adjusting the position of a gravity tensioning device, which is applied to a belt conveyor provided in a second aspect of the present invention. The method for adjusting the position of the gravity tensioning device includes: acquiring position information of a counterweight in the gravity tensioning device of the belt conveyor; generating a control signal based on the position information; and controlling an electric winch to rotate based on the control signal to adjust the position of the counterweight.

[0016] In conjunction with the third aspect, in the first embodiment of the third aspect, when the position height in the position information reaches the preset highest position, the control signal is a reverse rotation control signal, driving the electric winch to rotate in the reverse direction and lower the position of the counterweight; when the position height in the position information reaches the preset lowest position, the control signal is a forward rotation control signal, driving the electric winch to rotate in the forward direction and raise the position of the counterweight.

[0017] In conjunction with the third aspect, in the second embodiment of the third aspect, the position adjustment method of the gravity tensioning device further includes: generating alarm information based on the position information, and triggering an alarm based on the alarm information.

[0018] The technical solution of this invention has the following advantages:

[0019] The position adjustment device for the gravity tensioning device provided in this embodiment of the invention includes a position detection device, an adjustment device, and an electric winch. The position detection device detects the position signal of the counterweight in the gravity tensioning device. Then, the adjustment device sends a rotation command to the electric winch according to the position signal, controlling the electric winch to rotate and adjust the position of the counterweight. When the position of the counterweight is too high or too low, the adjustment device automatically controls the electric winch to adjust the position of the counterweight, thereby realizing the automatic adjustment of the position of the gravity tensioning device, saving manpower, avoiding the oversight of manual operation, and minimizing adjustment errors. This effectively prevents accidents such as the counterweight hitting the top or falling. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the position adjustment device of the gravity tensioning device in an embodiment of the present invention;

[0022] Figure 2 This is another structural schematic diagram of the position adjustment device of the gravity tensioning device in an embodiment of the present invention;

[0023] Figure 3 This is another structural schematic diagram of the position adjustment device of the gravity tensioning device in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the belt conveyor in an embodiment of the present invention;

[0025] Figure 5 This is a flowchart of the position adjustment method of the gravity tensioning device in an embodiment of the present invention;

[0026] Figure 6 This is another flowchart of the position adjustment method of the gravity tensioning device in an embodiment of the present invention; Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0028] In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1

[0032] This invention provides a position adjustment device for a gravity tensioning device, such as... Figure 1 As shown, the position adjustment device of the gravity tensioning device includes: a position detection device 1, an adjustment device 2, and an electric winch 3, etc.

[0033] The position detection device 1 is connected to one end of the adjustment device 2. The position detection device 1 detects the position signal of the counterweight 4 in the gravity tensioning device of the belt conveyor and sends the position signal to the adjustment device 2. The other end of the adjustment device 2 is connected to one end of the electric winch 3. The adjustment device 2 receives the position signal and sends a rotation command to the electric winch 3 according to the position signal. The electric winch 3 is connected to the counterweight 4. The electric winch 3 receives the rotation command and adjusts the position of the counterweight 4 according to the rotation command.

[0034] Through the coordinated operation of the above-mentioned components, the position adjustment device of the gravity tensioning device provided in this embodiment of the invention realizes the automatic adjustment of the position of the gravity tensioning device, saves human resources, avoids the oversight of manual operation, and has small adjustment error, thereby effectively preventing the occurrence of accidents such as the hammer hitting the top or falling.

[0035] The position adjustment device of the gravity tensioning device according to the present invention will be further described below with reference to specific examples.

[0036] In a preferred embodiment, such as Figure 2 As shown, the position detection device 1 described above includes: a first detection element 11 and a second detection element 12.

[0037] The first detection element 11 is set at a preset highest position. When the position of the hammer 4 reaches the preset highest position, the position signal detected by the first detection element 11 is a high position signal. The second detection element 12 is set at a preset lowest position. When the position of the hammer 4 reaches the preset lowest position, the position signal detected by the second detection element 12 is a low position signal.

[0038] In practical applications, the gravity tensioning device is an essential component for ensuring the normal operation of the belt conveyor. The position of the counterweight 4 in the gravity tensioning device needs to be set within a certain safety range. If the position of the counterweight 4 is too high, it is easy to cause an overshoot accident, while if the position is too low, it is easy to cause a fall accident, thus threatening the safety of on-site personnel and equipment. Therefore, the preset highest and lowest positions of the counterweight 4 are determined according to safety requirements. For example, if the preset highest position is 1.3 meters and the preset lowest position is 0.8 meters, then it is safe for the counterweight 4 to move within the range of 0.8 meters to 1.3 meters above the ground, thereby ensuring that the belt conveyor operates within a safe position range.

[0039] In practical applications, the first detection element 11 and the second detection element 12 mentioned above can be infrared sensors. The infrared sensors emit infrared rays to detect whether the weight 4 is located at the corresponding preset position. When the weight 4 is detected to have reached the position of the infrared sensor, a corresponding position signal is sent to the adjustment device 2.

[0040] In a preferred embodiment, such as Figure 2 As shown, the position detection device 1 further includes a digital-to-analog converter 13, which converts the position signal into an analog signal and sends the analog signal to the adjustment device 2. In practical applications, after the position signal is detected by the first detection element 11 and the second detection element 12 in the position detection device 1, the position signal is converted into an analog signal by the digital-to-analog converter 13. For example, when the detected position signal is a high position signal, the converted analog signal is a high-level signal; when the detected position signal is a low position signal, the converted analog signal is a low-level signal; when no position signal is detected, it indicates that the current position of the counterweight 4 is within the safe position range and no position adjustment is required.

[0041] In a preferred embodiment, the aforementioned rotation commands include: a forward rotation command and a reverse rotation command. When the position signal is a high position signal, the adjusting device 2 sends a reverse rotation command to the electric winch 3. At this time, the electric winch 3 reverses direction, lowering the position of the aforementioned counterweight 4. In practical applications, when the position signal is a high position signal, it indicates that the position of the counterweight 4 is too high and needs to be lowered to avoid a counterweight 4 overshooting accident. When the position signal is a low position signal, the adjusting device 2 sends a forward rotation command to the electric winch 3. At this time, the electric winch 3 rotates forward, raising the position of the aforementioned counterweight 4. In practical applications, when the position signal is a low position signal, it indicates that the position of the counterweight 4 is too low and needs to be raised to avoid a counterweight 4 falling accident.

[0042] In a preferred embodiment, such as Figure 3As shown, the position adjustment device of the gravity tensioning device also includes an alarm device 5, which is connected to the adjustment device 2 and is used to issue an alarm based on the position signal. Specifically, when the position signal detected by the position detection device 1 is a high position signal, the alarm device 5 displays a high position alarm for the weight 4 on the display screen and emits a high position alarm sound; when the position signal detected by the position detection device 1 is a low position signal, the alarm device 5 displays a low position alarm for the weight 4 on the display screen and emits a low position alarm sound. This alerts the operator to any abnormalities in the weight 4 and monitors whether the automatic adjustment of the weight 4's position is abnormal.

[0043] Through the coordinated operation of the above-mentioned components, the position adjustment device of the gravity tensioning device provided in this embodiment of the invention realizes the automatic adjustment of the position of the gravity tensioning device, saves manpower, avoids the oversight of manual operation, and has small adjustment error. In this way, it can effectively prevent the occurrence of accidents such as the hammer hitting the top or falling. In addition, it also realizes the timely alarm function when the position of the hammer is abnormal.

[0044] Example 2

[0045] This invention provides a belt conveyor, such as... Figure 4 As shown, the belt conveyor includes: a drive motor 101, a conveyor belt 102, a counterweight tensioning device 103, and a position adjustment device 104 for the gravity tensioning device, etc.

[0046] The position adjustment device 104 of the gravity tensioning device can be the same as the position adjustment device 104 of the gravity tensioning device provided in Embodiment 1, used to adjust the position of the weight 4 in the weight tensioning device 103. For details, please refer to the relevant description in Embodiment 1.

[0047] The drive motor 101 is connected to the conveyor belt 102, which drives the conveyor belt 102 to move, so that the conveyor belt 102 rotates in a cycle at a certain speed to transport goods.

[0048] The counterweight tensioning device 103 is installed on the conveyor belt 102 to tension the conveyor belt 102, thereby ensuring that the conveyor belt 102 has appropriate tension, preventing the conveyor belt 102 from slipping, preventing material spillage caused by the slack of the conveyor belt 102 between the two sets of idlers, and compensating for the permanent deformation of the conveyor belt 102 as well as the elastic elongation during start-up and stable operation under different working conditions.

[0049] Through the coordinated operation of the above-mentioned components, the belt conveyor provided in this embodiment of the invention realizes automatic adjustment of the position of the gravity tensioning device, saves manpower, avoids the oversight of manual operation, and has small adjustment error. In this way, it can effectively avoid the occurrence of accidents such as the hammer hitting the top or falling, and ensure the safe operation of the belt conveyor.

[0050] Example 3

[0051] This invention provides a method for adjusting the position of a gravity tensioning device, which can be applied to the belt conveyor described in Embodiment 2, such as... Figure 5 As shown, the position adjustment method of the gravity tensioning device includes:

[0052] Step S1: Obtain the position information of the counterweight 4 in the gravity tensioning device of the belt conveyor.

[0053] Step S2: Generate control signals based on location information.

[0054] Step S3: Control the electric winch 3 to rotate according to the control signal and adjust the position of the counterweight 4.

[0055] By performing steps S1 to S3 above, the position adjustment method of the gravity tensioning device provided in this embodiment of the invention realizes the automatic adjustment of the position of the gravity tensioning device, saves manpower, avoids the oversight of manual operation, and has small adjustment error. In this way, it can effectively avoid the occurrence of accidents such as the hammer hitting the top or falling, and ensure the safe operation of the belt conveyor.

[0056] Specifically, in one embodiment, when the position height in the position information reaches the preset highest position, the control signal is a reverse rotation control signal, driving the electric winch 3 to rotate in the reverse direction and lower the position of the counterweight 4; when the position height in the position information reaches the preset lowest position, the control signal is a forward rotation control signal, driving the electric winch 3 to rotate in the forward direction and raise the position of the counterweight 4.

[0057] In a preferred embodiment, such as Figure 6 As shown, the position adjustment method of the gravity tensioning device described above further includes:

[0058] Step S4: Generate alarm information based on the position information and trigger an alarm. In practical applications, when the position signal is a high position signal, a high position alarm for the hammer is generated, displayed on the alarm device's screen, and a high position alarm sound is emitted simultaneously; when the position signal is a low position signal, a low position alarm for the hammer is generated, displayed on the alarm device's screen, and a low position alarm sound is emitted simultaneously. This alerts on-site personnel to the position of the hammer 4 and monitors whether the automatic adjustment of the hammer 4 is normal, thus preventing safety accidents.

[0059] By executing steps S1 to S4 above, the position adjustment method of the gravity tensioning device provided in this embodiment of the invention realizes the automatic adjustment of the position of the gravity tensioning device, saves manpower, avoids the oversight of manual operation, and has small adjustment error. In this way, it can effectively prevent the occurrence of accidents such as the hammer hitting the top or falling, and ensure the safe operation of the belt conveyor. In addition, it also realizes timely alarm when the position of the hammer is abnormal.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A position adjustment device for a gravity tensioning device, applied to a belt conveyor, characterized in that: include: A position detection device (1), an adjustment device (2) and an electric winch (3), wherein: The position detection device (1) is connected to one end of the adjustment device (2), and the position detection device (1) detects a position signal of a weight (4) in a gravity tensioning device of a belt conveyor, and sends the position signal to the adjustment device (2); The other end of the regulating device (2) is connected to one end of the electric winch (3), and the regulating device (2) receives the position signal and sends a rotation instruction to the electric winch (3) according to the position signal; The electric winch (3) is connected to the weight (4), and the electric winch (3) receives the rotation instruction and adjusts the position of the weight (4) according to the rotation instruction; The position detection device (1) comprises: a first detection element (11) and a second detection element (12), wherein: The first detection element (11) is arranged at a preset highest position of the weight (4); when the position of the weight (4) reaches the preset highest position, the position signal detected by the first detection element (11) is a high position signal; The second detection element (12) is arranged at a preset lowest position of the weight (4); when the position of the weight (4) reaches the preset lowest position, the position signal detected by the second detection element (12) is a low position signal; The rotation instructions include: a forward rotation instruction and a reverse rotation instruction, wherein: When the position signal is a high position signal, the regulating device (2) sends a reverse rotation instruction to the electric winch (3); When the position signal is a low position signal, the regulating device (2) sends a forward rotation instruction to the electric winch (3); When the rotation instruction is a forward rotation instruction, the electric winch (3) rotates forward to raise the position of the weight (4); When the rotation instruction is a reverse rotation instruction, the electric winch (3) reverses to lower the position of the weight (4); The position detection device (1) further comprises: a digital-to-analog converter (13), wherein the digital-to-analog converter (13) converts the position signal into an analog quantity signal and sends the analog quantity signal to the regulating device (2).

2. The position adjustment device of the gravity tensioning device according to claim 1, characterized in that: The first detection element (11) and the second detection element (12) are infrared sensors.

3. The position adjustment device of the gravity tensioning device according to claim 1, characterized in that: Also includes: An alarm device (5), the alarm device (5) is connected to the regulating device (2) and is used to issue an alarm according to the position signal.

4. The position adjustment device of the gravity tensioning device according to claim 3, characterized in that: When the position signal is the high position signal, the alarm device (5) performs a high position alarm; When the position signal is the low position signal, the alarm device (5) performs a low position alarm.

5. A belt conveyor, characterized in that: include: A driving motor (101), a conveyor belt (102), a weight tensioning device (103), and a position adjustment device (104) of a gravity tensioning device as claimed in any one of claims 1 to 4, wherein: The driving motor (101) is connected to the conveyor belt (102) to drive the conveyor belt (102) to move; The weight tensioning device (103) is arranged on the conveyor belt (102) and is used for tensioning the conveyor belt (102); The position adjustment device (104) is used to adjust the position of the weight in the weight tensioning device (103).

6. A method for adjusting the position of a gravity tensioning device, applied to the position adjusting device of the gravity tensioning device as claimed in any one of claims 1 to 4, characterized in that: include: Obtain the position information of the weight in the gravity tensioning device of the belt conveyor; generating a control signal according to the position information; Control the electric winch to rotate according to the control signal to adjust the position of the weight; When the position height in the position information reaches the preset highest position, the control signal is a reverse rotation control signal, driving the electric winch to rotate in the reverse direction to lower the position of the weight; When the position height in the position information reaches the preset lowest position, the control signal is a forward rotation control signal, which drives the electric winch to rotate forward and raise the position of the weight.

7. The position adjustment method of the gravity tensioning device according to claim 6, characterized in that: Also includes: Generate alarm information according to the location information, and issue an alarm according to the alarm information.

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