A deviation correction pressure adjustment device for a tension cylinder and a conveying device

Abstract

A deviation correction pressure adjustment device for a tensioning cylinder and a conveying device provided by an embodiment of the present invention relate to the technical field of pressure adjustment equipment. The conveying device includes a deviation correction pressure adjustment device for a tensioning cylinder. The deviation correction pressure adjustment device for the tensioning cylinder can realize the synchronous control of the left tensioning cylinder and the right tensioning cylinder through a connecting member, thereby improving the convenience of adjusting the air pressure regulating valve during deviation correction. And it can ensure that when one of the left tensioning cylinder and the right tensioning cylinder is adjusted, the other can also be adjusted in time, thereby improving the efficiency of adjusting the deviation correction, and will not directly close one side of the tensioning cylinder, causing a large pressure difference between the two sides and increasing the deformation of the conveyor belt.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure regulating devices, and more particularly, to a deviation correction pressure regulating device for a tensioning cylinder and a conveying device. Background Art

[0002] In the existing conveying device, materials are transported through a conveyor belt. When the conveyor belt is conveying, the conveyor belt is prone to shift left and right. Therefore, a deviation correction device is required to correct the deviation of the conveyor belt.

[0003] After research by the inventor, it is found that most of the existing conveying devices directly install two tensioning cylinders on both sides of themselves. When the conveyor belt of the conveying device deviates to one side, the deviation of the conveyor belt on the conveying device is achieved by closing the tensioning cylinder on the other side. However, when correcting the deviation, directly closing the tensioning cylinder on one side cannot adjust the output air pressure of the tensioning cylinder, which will cause the amplitude and speed of the swing of the conveyor belt during deviation correction to be relatively large, and it is easy to increase the degree of deformation of the conveyor belt. Summary of the Invention

[0004] The purpose of the present invention is to provide a deviation correction pressure regulating device for a tensioning cylinder and a conveying device, which can reduce the degree of deformation of the conveyor belt during deviation correction.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In a first aspect, the present invention provides a deviation correction pressure regulating device for a tensioning cylinder, including:

[0007] A pressure regulating valve assembly, the pressure regulating valve assembly includes a connecting member and two air pressure regulating valves. The air pressure regulating valve has an adjusting knob, an air inlet and an air outlet. The connecting member is provided with an installation hole for sleeving the adjusting knob. The adjusting knobs of the two air pressure regulating valves are respectively inserted at both ends of the installation hole and can rotate synchronously with the connecting member. When the connecting member rotates, the opening of one of the two adjusting knobs decreases, and the opening of the other adjusting knob increases. For the two air pressure regulating valves, the air inlets of the two air pressure regulating valves are used to connect with a compressed air source, the air outlet of one of the air pressure regulating valves is used to connect with the left tensioning cylinder, and the air outlet of the other air pressure regulating valve is used to connect with the right tensioning cylinder.

[0008] In an alternative embodiment, the pressure regulating ranges of the two air pressure regulating valves are the same and the sum of the pressure values in the two air pressure regulating valves is always a preset value.

[0009] In an alternative embodiment, the connecting member is a first synchronous pulley.

[0010] In an optional embodiment, the correction pressure adjustment device of the tensioning cylinder also includes a driving assembly, the driving assembly includes a first motor and a synchronous belt, the output shaft of the first motor is equipped with a second synchronous pulley, and the synchronous belt is transmission-connected to the first synchronous pulley and the second synchronous pulley.

[0011] In an optional embodiment, the first motor is a stepper motor.

[0012] In an optional embodiment, the air pressure regulating valve further has a pressure gauge.

[0013] In a second aspect, the present invention provides a conveying device, comprising the deviation correction pressure regulating device of the tensioning cylinder of the aforementioned embodiment.

[0014] In an optional embodiment, the correction pressure adjustment device of the tensioning cylinder further includes a driving assembly, the driving assembly includes a first motor and a synchronous belt, the output shaft of the first motor is mounted with a second synchronous pulley, and the synchronous belt is drivingly connected with the connecting member and the second synchronous pulley;

[0015] The conveying device also includes a second motor, a driving wheel, a transmission belt, a driven wheel, a left tensioning cylinder, a right tensioning cylinder, a preset sensor and a control module. The transmission belt is sleeved on the driving wheel and the driven wheel, the output shaft of the second motor is connected to the driving wheel, the cylinder telescopic shaft of the left tensioning cylinder and the cylinder telescopic shaft of the right tensioning cylinder are respectively penetrated at both ends of the driven wheel, the left tensioning cylinder and the right tensioning cylinder are respectively connected to the air outlets of the two air pressure regulating valves, the preset sensor is located on the side of the transmission belt close to the right tensioning cylinder or the side close to the left tensioning cylinder, the preset sensor is used to detect the offset of the transmission belt, and the control module is also communicatively connected to the first motor and the preset sensor.

[0016] In an optional embodiment, the preset sensor is located on a side of the conveyor belt close to the right tension cylinder.

[0017] In an optional embodiment, at least one of the driven wheel and the driving wheel is made of rubber material.

[0018] The beneficial effects of the embodiments of the present invention are as follows: The embodiments of the present invention provide a deviation correction pressure adjustment device for a tensioning cylinder, which includes a pressure regulating valve assembly. The pressure regulating valve assembly includes a connecting member and two air pressure regulating valves. The air pressure regulating valve has an adjustment knob, an air inlet, and an air outlet. The connecting member is provided with an installation hole for sleeving the adjustment knob. The adjustment knobs of the two air pressure regulating valves are respectively inserted at both ends of the installation hole and can rotate synchronously with the connecting member. When the connecting member rotates, the opening degree of one of the two adjustment knobs decreases, and the opening degree of the other adjustment knob increases. For the two air pressure regulating valves, the air inlets of the two air pressure regulating valves are used to connect to a compressed air source. The air outlet of one of the air pressure regulating valves is used to connect to the left tensioning cylinder, and the air outlet of the other air pressure regulating valve is used to connect to the right tensioning cylinder. It is possible to achieve synchronous control of the left tensioning cylinder and the right tensioning cylinder through the connecting member, thereby improving the convenience of adjusting the air pressure regulating valve during deviation correction. And it can ensure that when adjusting one of the left tensioning cylinder and the right tensioning cylinder, the other can also be adjusted in a timely manner, thereby improving the efficiency of adjusting the deviation correction, and will not directly close one side of the tensioning cylinder, causing a large pressure difference between the two sides and increasing the deformation of the transmission belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 FIG. 1 is a schematic structural diagram of the deviation correction pressure adjustment device for a tensioning cylinder provided by the embodiment of the present invention from a first perspective;

[0021] Figure 2 FIG. 2 is a schematic structural diagram of the deviation correction pressure adjustment device for a tensioning cylinder provided by the embodiment of the present invention from a second perspective;

[0022] Figure 3 FIG. 3 is a schematic structural diagram of the conveyor device provided by the embodiment of the present invention.

[0023] Reference numerals: 1 - conveyor device; 10 - deviation correction pressure adjustment device for a tensioning cylinder; 11 - air pressure regulating valve; 111 - adjustment knob; 112 - air inlet; 113 - air outlet; 114 - pressure gauge; 12 - connecting member; 13 - first motor; 14 - second synchronous pulley; 15 - synchronous belt; 20 - second motor; 30 - transmission belt; 40 - driving wheel; 50 - driven wheel; 60 - left tensioning cylinder; 70 - right tensioning cylinder; 80 - preset sensor; 90 - cylinder expansion shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the accompanying drawings herein can be arranged and designed in a variety of different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0028] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The following will introduce in detail the specific structure of a deviation correction pressure adjustment device for a tension cylinder and a conveying device provided by an embodiment of the present invention, as well as the corresponding technical effects brought thereby with reference to the accompanying drawings.

[0031] Please refer to Figure 1 - Figure 2 , a deviation correction pressure adjustment device 10 for a tension cylinder provided by an embodiment of the present invention includes a pressure regulating valve assembly. The pressure regulating valve assembly includes a connecting member 12 and two air pressure regulating valves 11. The air pressure regulating valve 11 has an adjusting knob 111, an air inlet 112, and an air outlet 113. The connecting member 12 is provided with an installation hole for sleeving the adjusting knob 111. The adjusting knobs 111 of the two air pressure regulating valves are respectively inserted at both ends of the installation hole and can rotate synchronously with the connecting member 12. When the connecting member 12 rotates, the opening of one of the two adjusting knobs 111 decreases, and the opening of the other adjusting knob 111 increases. For the two air pressure regulating valves 11, the air inlets 112 of the two air pressure regulating valves 11 are used to connect with a compressed air source. The air outlet 113 of one air pressure regulating valve 11 is used to connect with the left tension cylinder 60, and the air outlet 113 of the other air pressure regulating valve 11 is used to connect with the right tension cylinder 70. It can be understood that the above-mentioned compressed air source can be an air compressor.

[0032] That is to say, the dental body regulating valve in this embodiment is the air pressure regulating valve 11.

[0033] In other words, when the air inlets 112 of the two air pressure regulating valves 11 are connected to the compressed air source, and the air outlet 113 of one air pressure regulating valve 11 is connected to the left tension cylinder 60, and the air outlet 113 of the other air pressure regulating valve 11 is connected to the right tension cylinder 70, when the connecting member 12 rotates, the adjusting knobs 111 of the two air pressure regulating valves 11 can control the pressure of the left tension cylinder 60 and the right tension cylinder 70 to increase and decrease respectively. For example, when the connecting member 12 drives the adjusting knobs 111 of the two air pressure regulating valves 11 to rotate, when the pressure of the left tension cylinder 60 decreases, the pressure of the right tension cylinder 70 increases.

[0034] It can be understood that since the adjusting knobs 111 of the two air pressure regulating valves 11 are respectively installed on the installation hole of the connecting member 12 and the two adjusting knobs 111 are arranged oppositely, although the two adjusting knobs 111 can be driven by the connecting member 12 to rotate synchronously, during rotation, the adjusting directions of the adjusting knobs 111 of each air pressure regulating valve are opposite, so the pressure of the left tension cylinder 60 and the right tension cylinder 70 connected to different air pressure regulating valves will increase and decrease respectively.

[0035] Therefore, it can be understood that the rotation of the connecting member 12 can simultaneously drive the adjusting knobs 111 of the two air pressure regulating valves 11 to rotate, thereby realizing simultaneous control of the two air pressure regulating valves 11, that is, the synchronous control of the left tensioning cylinder 60 and the right tensioning cylinder 70 can be realized through the connecting member 12, thereby improving the convenience of adjusting the air pressure regulating valve 11 during deviation correction. It can also ensure that when one of the left tensioning cylinder 60 and the right tensioning cylinder 70 is adjusted, the other can also be adjusted in time, thereby improving the efficiency of deviation correction, and will not directly close the tensioning cylinder on one side, causing a large pressure difference on both sides, which will increase the deformation of the conveyor belt. In this solution, by rotating the adjusting knob 111, the air pressure of one tensioning cylinder and the other tensioning cylinder is increased and decreased, thereby avoiding the situation that one tensioning cylinder is directly closed, thereby reducing the deformation of the conveyor belt.

[0036] Furthermore, in this embodiment, the pressure regulating ranges of the two air pressure regulating valves 11 are the same and the sum of the pressure values of the two air pressure regulating valves 11 is always the preset value. Specifically, the two air pressure regulating valves 11 in this embodiment are of the same model. After the two air pressure regulating valves 11 are installed through the connecting piece 12, the pressure inside the two air pressure regulating valves 11 can be adjusted to be equal through the connecting piece 12. Therefore, the two air pressure regulating valves 11 with equal internal air pressure can be connected to the left tensioning cylinder 60 and the right tensioning cylinder 70 respectively, so as to ensure that when the pressure of one cylinder is lower, the connecting piece 12 rotates to adjust the correction cylinder with air pressure change.

[0037] Furthermore, in the present embodiment, the connecting member 12 is a first synchronous pulley. Of course, in other embodiments, the connecting member 12 is not limited to the first synchronous pulley, but may also be a connecting member 12 of other structures, as long as it can ensure stable connection with the two adjusting knobs 111 and can drive the two adjusting knobs 111 to rotate at the same time.

[0038] Furthermore, the tension cylinder deviation correction pressure regulating device 10 also includes a driving assembly, which includes a first motor 13 and a synchronous belt 15. The output shaft of the first motor 13 is equipped with a second synchronous pulley 14, and the synchronous belt 15 is transmission-connected with the first synchronous pulley and the second synchronous pulley 14. It can be understood that the transmission connection with the first connecting member 12 can be achieved through the first motor 13 and the synchronous belt 15. Driven by the output shaft of the first motor 13, the second synchronous pulley 14 rotates. Since the first synchronous pulley is transmission-connected with the second synchronous pulley 14 through the synchronous belt 15, the first synchronous pulley rotates under the action of the synchronous belt 15. Then, the left tension cylinder 60 and the right tension cylinder 70 are controlled. For example, when the output shaft of the motor rotates forward, the pressure of the left tension cylinder 60 increases, while the pressure of the right tension cylinder 70 decreases.

[0039] Further, in this embodiment, the first motor 13 is a stepper motor. It can be understood that the stepper motor has excellent start-stop and reverse response, which can ensure better control of the rotation of the connecting member 12, and thus better control the pressure of the left tensioning cylinder 60 and the right tensioning cylinder 70. Moreover, the rotation accuracy of the motor is relatively high, which is beneficial to improving the control accuracy of the connecting member 12. And the speed of the output shaft of the stepper motor is proportional to the pulse frequency, so it has a wide speed range.

[0040] Of course, in some other embodiments, the first motor 13 is not limited to a stepper motor, and can also be other types of motors. The type of the first motor 13 is not specifically limited herein.

[0041] Further, the air pressure regulating valve 11 also has a pressure gauge 114. It can be understood that the pressure gauge 114 can reflect the pressure inside the air pressure regulating valve 11, enabling the user to more intuitively see the pressure inside the air pressure valve. It should be noted that the pressure gauge 114 of the air pressure regulating valve 11 is common knowledge in the art and will not be elaborated herein.

[0042] In the existing transfer device 1, most of them set sensors at the extreme positions that the conveyor belt 30 can reach to detect whether the conveyor belt 30 deviates to the extreme position, and then control the relative left tensioning cylinder 60 or right tensioning cylinder 70 to change the pressure to achieve deviation correction. Such a deviation correction method can only achieve deviation correction at the extreme positions, cannot achieve real-time deviation correction, and will increase the deformation degree of the conveyor belt 30.

[0043] Please refer to Figure 3 , this embodiment of the present invention also provides a transfer device 1, and this transfer device 1 includes the deviation correction pressure adjustment device 10 of the tensioning cylinder described above. It should be noted that the connection schematic diagram of the air pressure regulating valve of the deviation correction pressure adjustment device 10 of the tensioning cylinder with the left tensioning cylinder 60 and the right tensioning cylinder 70 is not shown in Figure 3 , and it is only used as a structural schematic diagram for reference.

[0044] Among them, the conveying device 1 further includes a second motor 20, a driving wheel 40, a conveyor belt 30, a driven wheel 50, a left tensioning cylinder 60, a right tensioning cylinder 70, a preset sensor 80 and a control module. The conveyor belt is sleeved on the driving wheel 40 and the driven wheel 50. The output shaft of the second motor 20 is connected to the driving shaft. The cylinder telescopic shafts 90 of the left tensioning cylinder 60 and the right tensioning cylinder 70 respectively penetrate through both ends of the driven wheel 50. The left tensioning cylinder and the right tensioning cylinder are respectively connected to the air outlet 113 of two air pressure regulating valves 11. The preset sensor 80 is located on one side of the conveyor belt 30 close to the right tensioning cylinder 70 or close to the left tensioning cylinder 60. The preset sensor 80 is used to detect the deviation amount of the conveyor belt 30. The control module is communicatively connected to the first motor 13 and the preset sensor 80 at the same time.

[0045] Of course, the conveying device 1 further includes a frame body. Among them, the driven wheel 50 and the driving wheel 40 are both installed on the frame body, and the second motor 20, the left tensioning cylinder 60 and the right tensioning cylinder 70 are also installed on the frame body. It should be noted that the frame body is not shown in Figure 3 this figure.

[0046] It should be noted that the above-mentioned preset sensor 80 can detect the deviation amount of the conveyor belt by detecting the change in the distance between the conveyor belt and a certain fixed object. The fixed object can be a certain component on the frame body.

[0047] In this embodiment, the preset sensor 80 is located on one side of the conveyor belt 30 close to the right tensioning cylinder 70. It can be understood that the preset sensor 80 can detect the deviation amount of the conveyor belt on the right side. Since the deviation correction pressure regulating device 10 of the tensioning cylinder further includes a driving component, the driving component includes a first motor 13 and a synchronous belt 15. A second synchronous belt pulley 14 is installed on the output shaft of the first motor 13. The synchronous belt 15 is in transmission connection with the connecting piece 12 and the second synchronous belt pulley 14, that is, the synchronous belt 15 is in transmission connection with the first synchronous belt pulley and the second synchronous belt pulley 14. That is to say, under the action of the synchronous belt 15, when the second synchronous belt pulley 14 rotates, the first synchronous belt pulley can be driven by the synchronous belt 15 to rotate.

[0048] When the preset sensor 80 detects that the conveyor belt deviates to the right, it sends a signal to the control module. Then the control module controls the first motor 13 to rotate, so as to drive the connecting piece 12 connected to the adjusting knobs 111 of the two air pressure regulating valves 11 to rotate, increase the pressure of the right tensioning cylinder 70, and decrease the pressure of the left tensioning cylinder 60. Then the cylinder telescopic shaft 90 of the right tensioning cylinder 70 can drive the driven wheel 50 to shift to the left until the preset sensor 80 detects that the deviation amount of the conveyor belt is zero. That is to say, the conveyor belt is in the standard position without deviation.

[0049] Of course, in some other embodiments, the preset sensor 80 may also be located on the side of the conveyor belt 30 close to the left tensioning cylinder 60 to detect the offset on the left side of the conveyor belt 30.

[0050] It should be noted that in this embodiment, the control of the deviation correction by the control module can be proportional control. For example, the voltage of the preset sensor 80 is 0-10v feedback control. When the preset sensor 80 detects that the conveyor belt is in the standard position without offset, the voltage of the preset sensor 80 is 5V. At this time, the pressures in the left tensioning cylinder 60 and the right tensioning cylinder 70 are basically equal, and the stepping motors do not rotate. If the feedback voltage of the preset sensor 80 is greater than 5V, the conveyor belt 30 deviates to the left, and the stepping motor rotates forward. Conversely, the stepping motor rotates in reverse to control the left tensioning cylinder 60 and the right tensioning cylinder 70. To achieve proportional control, it can control how much air pressure is changed corresponding to the number of rotation turns of the connecting member 12. As an example, the preset sensor 80 feeds back 0-10V to the control module. 1V can correspond to one rotation of the stepping motor, corresponding to 1000 pulses of the stepping motor. For example, when the feedback voltage of the preset sensor 80 is 6V, the stepping motor rotates forward one circle. After running 1000 pulses, the stepping motor stops running. At this time, the pressure of the right tensioning cylinder 70 decreases, and the pressure of the left tensioning cylinder 60 increases. Furthermore, the offset of the conveyor belt 30 is gradually adjusted to a stable value through a one-to-one proportional relationship. The deviation correction of the conveyor belt 30 realized by the device of this embodiment can ensure real-time deviation correction and effectively reduce the deformation degree of the conveyor belt 30.

[0051] Further, at least one of the driven wheel 50 and the driving wheel 40 is made of rubber material. Specifically, in this embodiment, both the driven wheel 50 and the driving wheel 40 are made of rubber material. It can be understood that the rubber material has a large friction coefficient, which can increase the friction force with the conveyor belt 30, and thus can effectively avoid the situation of slipping of the driven wheel 50 and the driving wheel 40.

[0052] In summary, the embodiment of the present invention provides a deviation correction pressure regulating device 10 for a tensioning cylinder, which includes a pressure regulating valve assembly. The pressure regulating valve assembly includes a connecting member 12 and two air pressure regulating valves 11. The air pressure regulating valve 11 has an adjusting knob 111, an air inlet 112 and an air outlet 113. The connecting member 12 is provided with an installation hole for sleeving the adjusting knob 111. The adjusting knobs 111 of the two air pressure regulating valves are respectively inserted at both ends of the installation hole and can rotate synchronously with the connecting member 12. When the connecting member 12 rotates, the opening degree of one of the two adjusting knobs 111 decreases, and the opening degree of the other adjusting knob 111 increases. For the two air pressure regulating valves 11, the air inlets 112 of the two air pressure regulating valves 11 are used to connect with a compressed air source. The air outlet 113 of one of the air pressure regulating valves 11 is used to connect with the left tensioning cylinder 60, and the air outlet 113 of the other air pressure regulating valve 11 is used to connect with the right tensioning cylinder 70. The synchronous control of the left tensioning cylinder 60 and the right tensioning cylinder 70 can be realized through the connecting member 12, thereby improving the convenience of adjusting the air pressure regulating valve 11 during deviation correction. And it can ensure that when one of the left tensioning cylinder 60 and the right tensioning cylinder 70 is adjusted, the other can also be adjusted in time, thereby improving the efficiency of adjusting the deviation correction.

[0053] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A deviation correction pressure regulating device for a tension cylinder, characterized in that, Comprising: A pressure regulating valve assembly, the pressure regulating valve assembly includes a connecting member and two air pressure regulating valves. The air pressure regulating valve has an adjusting knob, an air inlet and an air outlet. The connecting member is provided with an installation hole for sleeving the adjusting knob. The adjusting knobs of the two air pressure regulating valves are respectively inserted into both ends of the installation hole and can rotate synchronously with the connecting member. When the connecting member rotates, the opening degree of one of the two adjusting knobs decreases, and the opening degree of the other adjusting knob increases. For the two air pressure regulating valves, the air inlets of the two air pressure regulating valves are used to connect with a compressed air source. The air outlet of one of the air pressure regulating valves is used to connect with a left tensioning cylinder, and the air outlet of the other air pressure regulating valve is used to connect with a right tensioning cylinder. The connecting member is a first synchronous pulley; The pressure regulating ranges of the two air pressure regulating valves are the same and the sum of the pressure values in the two air pressure regulating valves is always a preset value; A driving assembly, the driving assembly includes a first motor and a synchronous belt. The output shaft of the first motor is equipped with a second synchronous pulley. The synchronous belt is in transmission connection with the first synchronous pulley and the second synchronous pulley.

2. The deviation correction pressure adjustment device for a tensioning cylinder according to claim 1, wherein: The first motor is a stepping motor.

3. The deviation correction pressure adjustment device for a tensioning cylinder according to claim 1, wherein: The air pressure regulating valve also has a pressure gauge.

4. A conveying device, characterized in that, Including the deviation correction pressure adjustment device for a tensioning cylinder according to claim 1.

5. The conveyor device according to claim 4, wherein: The conveyor device further includes a second motor, a driving wheel, a conveyor belt, a driven wheel, a left tensioning cylinder, a right tensioning cylinder, a preset sensor and a control module. The conveyor belt is sleeved on the driving wheel and the driven wheel. The output shaft of the second motor is connected to the driving wheel. The cylinder telescopic shafts of the left tensioning cylinder and the right tensioning cylinder respectively penetrate through both ends of the driven wheel. The left tensioning cylinder and the right tensioning cylinder are respectively connected to the air outlets of the two air pressure regulating valves. The preset sensor is located on one side of the conveyor belt close to the right tensioning cylinder or close to the left tensioning cylinder. The preset sensor is used to detect the deviation amount of the conveyor belt. The control module is in communication connection with the first motor and the preset sensor at the same time.

6. The conveyor device according to claim 5, wherein: The preset sensor is located on one side of the conveyor belt close to the right tensioning cylinder.

7. The conveyor device according to claim 5, wherein: At least one of the driven wheel and the driving wheel is made of rubber material.

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