Conveyor belt correcting structure and spiral instant freezer

Abstract

The conveyor belt correcting structure comprises a conveyor belt, the inner side of the conveyor belt is spirally arranged around a main machine shell, and a plurality of spiral sections located at different heights are formed; the transmission component is wound around the conveyor belt outside the spiral part of the conveyor belt through a plurality of transmission wheels to enable the conveyor belt to circulate, and the tightness adjusting component is used for adjusting the distance between part of the transmission wheels to change the tightness of the conveyor belt; the tension sensor is arranged on the conveyor belt to detect a conveyor belt tension signal; and the rotating component is used for driving part of the transmission wheels to rotate forwards or backwards. By arranging the tightness adjusting part, the rotating part, the push rod part, the limiting part, the belt turning sensor and the displacement sensor, when the situation of belt clamping or belt turning of the conveying belt can be detected, the conveying belt can return by adjusting the tightness of the conveying belt and in a reverse rotation and push-back mode of the push rod part; and the conveyor belt can work normally.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral quick-freezers, in particular to a conveyor belt correction structure and a spiral quick-freezer. Background Art

[0002] In the operation process of existing quick-freezers, a conveyor belt system is usually used to transport materials. The conveyor belt track is prone to problems such as belt turnover and belt jamming during long-term high-speed operation. To prevent this problem, physical methods are generally used in the prior art to enhance the stability of the conveyor belt, such as installing guide wheels and using more wear-resistant materials. However, these technical means can only temporarily alleviate the problem and cannot fundamentally solve the root problems of belt turnover and belt jamming. In addition, the prior art lacks a real-time monitoring and automatic adjustment mechanism for the operating state of the conveyor belt track. When a conveyor belt fails, it often needs to be shut down and manually adjusted, which greatly affects production efficiency. Summary of the Utility Model

[0003] In order to solve the technical problem that the spiral conveyor belt of the quick-freezer in the above-mentioned prior art needs to be manually adjusted, the utility model provides a conveyor belt correction structure and a spiral quick-freezer.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The utility model provides a conveyor belt correction structure, including: a conveyor belt, the inner side of which is spirally arranged around the main machine housing to form multiple spiral segments at different heights; a transmission component, which circulates the conveyor belt through a plurality of transmission wheels around the conveyor belt outside the spiral part of the conveyor belt, and further includes:

[0006] A limiting part, located directly above each spiral segment of the conveyor belt, and provided with a belt turnover sensor for sensing the turnover of the conveyor belt;

[0007] A push rod part, connecting each of the limiting parts, for driving the limiting parts to press downwards to reset the turned conveyor belt.

[0008] Specifically, the conveyor belt correction structure further includes:

[0009] A tension adjustment component, for adjusting the distance between some of the transmission wheels to change the tension of the conveyor belt;

[0010] A tension sensor, arranged on the conveyor belt to detect the tension signal of the conveyor belt;

[0011] A rotating component, for driving the main machine housing and some of the transmission wheels to rotate forward or backward.

[0012] The conveyor belt correction structure further includes: displacement sensors respectively corresponding to each spiral segment for detecting the conveying speed of each spiral segment.

[0013] Further, mounting posts are provided on the outer side of the spiral part of the conveyor belt, and a plurality of the displacement sensors are arranged at different heights of the mounting posts corresponding to each spiral section.

[0014] The transmission components include:

[0015] A wheel frame located on one side of the spiral part of the conveyor belt for mounting a transmission wheel;

[0016] An upper transmission wheel and a lower transmission wheel. The upper transmission wheel is mounted on the upper part of the wheel frame, and the conveyor belt led out from the top of the spiral part of the conveyor belt bypasses the upper transmission wheel. The lower transmission wheel is mounted on the lower part of the wheel frame, and the conveyor belt led out from the bottom of the spiral part of the conveyor belt bypasses the lower transmission wheel;

[0017] A combined transmission wheel is mounted on the wheel frame and is located between the upper transmission wheel and the lower transmission wheel. The position of part of the transmission wheels is adjustable, and the conveyor belt that winds through between the upper transmission wheel and the transmission wheel is wound around it.

[0018] Further, the combined transmission wheel includes: a first transmission wheel, a second transmission wheel and a third transmission wheel. The first transmission wheel and the second transmission wheel are arranged at intervals. The third transmission wheel is located below between the first transmission wheel and the second transmission wheel. The conveyor belt bypasses the upper transmission wheel and then sequentially bypasses the second transmission wheel, the third transmission wheel and the first transmission wheel, and finally bypasses the lower transmission wheel. The tension adjustment component adjusts the height of the rotating shaft of the third transmission wheel.

[0019] The tension adjustment component includes: a lifting motor mounted on the wheel frame, a threaded shaft driven to rotate by the lifting motor, and a lifting member threadedly connected to the threaded shaft. The third transmission wheel is connected to the lifting member.

[0020] The conveyor belt correction structure further includes: a support frame arranged outside the spiral part of the conveyor belt. The mounting posts are the columns of the support frame, and the push rod part is mounted on the support frame.

[0021] Preferably, the belt turning sensor is a pressure sensor.

[0022] The present utility model also provides a spiral quick-freezing machine, including the above conveyor belt correction structure.

[0023] Compared with the prior art, by providing the tension adjustment component, the rotating component, the push rod part and the limiting part, and by providing the belt turning sensor and the displacement sensor, the present utility model can detect the situation of belt jamming or belt turning of the conveyor belt, and make the conveyor belt return to its position by adjusting the tension of the conveyor belt, as well as reversing and the push rod part pushing back, so that the conveyor belt can work normally. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 Structural diagram of an embodiment of the present invention;

[0027] Figure 3 Control flow chart of the tape cartridge in an embodiment of the present invention;

[0028] Figure 4 Control flow chart of tape turning in an embodiment of the present invention;

[0029] 1. Conveyor belt; 11. Spiral section;

[0030] 21. Upper driving wheel; 22. Lower driving wheel; 23. First driving wheel; 24. Second driving wheel; 25. Third driving wheel; 26. Wheel frame;

[0031] 3. Tension adjustment component;

[0032] 41. Tension sensor; 42. Tape turning sensor; 43. Displacement sensor;

[0033] 51. Push rod; 52. Limiting part; 53. Push rod motor;

[0034] 6. Support frame; 61. Column;

[0035] 7. Rotating component. Detailed implementation manners

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] The principle and structure of the present invention will be described in detail below with reference to the drawings and embodiments.

[0038] During the operation of a spiral quick-freezing machine, a conveyor belt system (track system) is usually used to convey materials. In the long-term high-speed operation of the spiral part of the conveyor belt track, since the conveyor belt needs to be arranged in a spiral shape, phenomena such as belt turnover and belt jamming are likely to occur. To prevent this problem, physical methods are generally used in the prior art to enhance the stability of the conveyor belt, such as installing guide wheels and using more wear-resistant materials. However, these technical means can only temporarily alleviate the problem and cannot fundamentally solve the root problems of belt turnover and belt jamming. In addition, the prior art lacks a real-time monitoring and automatic adjustment mechanism for the operating state of the conveyor belt track. When a fault occurs in the conveyor belt, it often needs to be stopped and manually adjusted, which greatly affects the production efficiency.

[0039] In response to this, the present utility model proposes a conveyor belt correction structure. The conveyor belt 1 can specifically be the conveyor belt 1 of a spiral quick-freezing machine, or it can also be other spiral-shaped conveyor belts 1 (specifically, it can be a conveyor track). Specifically, the conveyor belt correction structure includes: a conveyor belt 1, a transmission component, a limiting part 52, and a push rod part. The inner side of the conveyor belt 1 surrounds the main body housing of the quick-freezing machine arranged vertically and is arranged in a spiral shape on the annular outer wall surface of the main body housing, and rotates following the main body housing (the specific connection form with the main body housing has been disclosed in the existing spiral quick-freezing machine and will not be specifically described in detail), forming multiple spiral segments 11 at different heights. Each spiral segment 11 is connected in sequence from bottom to top. The transmission component is arranged on one side of the spiral part of the conveyor belt 1 and winds the conveyor belt 1 outside the spiral part through multiple transmission wheels, so that the conveyor belt 1 can form a closed loop and normally circulate for conveying; the limiting part 52 is arranged directly above each spiral segment 11, and a belt turnover sensor 42 is provided on the side of the limiting part 52 facing its corresponding spiral segment 11. When the spiral segment 11 turns upward during transmission, the belt turnover sensor 42 can send out an induction signal, and the push rod part is simultaneously connected to each limiting part 52 and is used to drive the limiting part 52 to press down, so that the flipped conveyor belt 1 is reset.

[0040] By arranging a belt turnover sensor 42 above each spiral segment to sense whether the conveyor belt 1 turns over to determine the actual condition of the conveyor belt 1, and driving the limiting part to press down through the push rod part, so that the spiral segment with belt turnover can return to its position.

[0041] In a specific embodiment, the belt turnover sensor 42 can specifically be a pressure sensor. The pressure sensor is simple and reliable. As long as any layer of the spiral segment 11 of the spiral part of the conveyor belt 1 turns over, the pressure generated by the turnover of the conveyor belt 1 can be sensed through the pressure sensor, and a pressure signal is sent out, so as to correctly judge whether it is necessary to control each component to adjust and correct the conveyor belt 1 to make the conveyor belt return to its position.

[0042] In a specific embodiment, the conveyor belt correction structure further includes: a tension adjustment member 3 and a rotating member 7. The tension adjustment member 3 is connected to some of the driving wheels of the transmission member (connected movably without affecting the rotation of the driving wheels). By adjusting the distance between some of the driving wheels, the tension of the conveyor belt 1 is changed. The rotating member 7 is rotatably connected to the rotating shaft of one of the driving wheels in the transmission member and is also rotatably connected to the main machine housing, and can drive the driving wheel to rotate forward or backward, and synchronously drive the main machine housing to rotate forward or backward (specifically through a gear structure, that is, one motor drives the driving wheel and the main machine housing to rotate simultaneously).

[0043] By providing the tension adjustment member 3 and the rotating member, when the conveyor belt 1 is jammed or turned over, the tension of the conveyor belt 1 can be adjusted and reversed to make the conveyor belt 1 return to its original position, so that the conveyor belt 1 can work normally.

[0044] In a specific embodiment, the conveyor belt correction structure further includes: a plurality of displacement sensors 43. The number of the displacement sensors 43 corresponds to each spiral section 11 one by one, and can detect the conveying speed of each spiral section 11.

[0045] By providing the displacement sensors 43, the conveying speeds of the respective spiral sections 11 can be detected respectively, and the actual situation of the conveyor belt can be accurately determined in cooperation with other sensors.

[0046] In a specific embodiment, mounting posts 61 are provided on the outer side of the spiral part of the conveyor belt 1, and a plurality of displacement sensors 43 are arranged at different heights of the mounting posts 61 corresponding to the respective spiral sections 11.

[0047] By providing the mounting posts 61 to mount the respective displacement sensors 43, the fixed positions of the displacement sensors 43 are stable, and the displacement parameters of the respective spiral sections 11 can be accurately detected.

[0048] In a specific embodiment, the conveyor belt correction structure further includes: a tension sensor 41 provided on the conveyor belt 1 to detect the tension signal of the conveyor belt 1.

[0049] The tension sensor 41 can detect the instantaneous tension fluctuation generated by the conveyor belt due to abnormality when the conveyor belt is jammed or turned over, so that the jammed or turned over situation of the conveyor belt can be accurately judged in combination with other sensors.

[0050] In a specific embodiment, the transmission component specifically includes: a wheel frame 26, an upper transmission wheel 21, a lower transmission wheel 22, and a combined transmission wheel. The wheel frame 26 is specifically located on one side of the spiral part of the conveyor belt 1 (on the side of the driving component, because the conveyor belt 1 is spirally wound around the driving component). A plurality of transmission wheel mounting positions are provided on the wheel frame 26. The transmission wheel mounting positions can mount the rotating shafts of the transmission wheels, enabling the transmission wheels to rotate along their rotating shafts at the transmission wheel mounting positions. The upper transmission wheel 21 is mounted on the upper part of the wheel frame 26 and is flush with the upper part of the spiral part of the conveyor belt 1. The conveyor belt 1 led out horizontally from the uppermost spiral section 11 of the spiral part of the conveyor belt 1 is wound around the upper transmission wheel 21. The lower transmission wheel 22 is mounted on the lower part of the wheel frame 26 and is flush with the lower part of the spiral part of the conveyor belt 1. The conveyor belt 1 led out horizontally from the lowermost spiral section 11 of the spiral part of the conveyor belt 1 is wound around the lower transmission wheel 22. The combined transmission wheel includes a plurality of transmission wheels, which are mounted on the wheel frame 26 and located between the upper transmission wheel 21 and the lower transmission wheel 22. The positions of some of the transmission wheels are adjustable, and the conveyor belt 1 is wound around the conveyor belt 1 between the upper transmission wheel 21 and the transmission wheels.

[0051] By setting the transmission component, after the conveyor belt 1 passes through the spiral, it can still bypass the transmission component to form a loop. At the same time, the combined transmission wheel located between the upper and lower rollers facilitates the adjustment of the wheel pitch, and at the same time does not affect the normal loop transmission of the conveyor belt 1.

[0052] In a specific embodiment, the combined transmission wheel includes: a first transmission wheel 23, a second transmission wheel 24, and a third transmission wheel 25. The first transmission wheel 23 and the second transmission wheel 24 are spaced and positioned. The third transmission wheel 25 is arranged to move up and down. The third transmission wheel 25 is located below between the first transmission wheel 23 and the second transmission wheel 24. The conveyor belt 1 bypasses the upper transmission wheel 21 and then successively bypasses the second transmission wheel 24, the third transmission wheel 25, and the first transmission wheel 23. Specifically, the conveyor belt 1 first bypasses the upper side of the second transmission wheel 24 and then bypasses the left side of the second transmission wheel 24 and extends downward, then bypasses the third transmission wheel 25 in a U shape, from the right side of the first transmission wheel 23, and then bypasses the upper side and the left side of the first transmission wheel 23 and extends downward to the lower transmission wheel 22. The tension adjustment component 3 is mounted on the wheel frame 26 and can adjust the height of the rotating shaft of the third transmission wheel 25, so that the relative height between the third transmission wheel 25 and the first and second transmission wheels 24 can change. And because the conveyor belt 1 also needs to bypass the third transmission wheel 25 when bypassing the first and second transmission wheels 24, in this layout form of the combined transmission wheel, and due to the limitation of the first and second transmission wheels 24, the normal loop of the conveyor belt will not be affected during the up and down movement of the third transmission wheel 25.

[0053] In a specific embodiment, the tension adjustment component 3 includes: a lifting motor installed on the wheel frame 26, a threaded shaft driven to rotate by the lifting motor, a lifting member threadedly connected to the threaded shaft, and a third transmission wheel 25 connected to the lifting member. That is, the threaded shaft is vertically arranged, the lifting member is provided with a horizontal shaft hole and a vertical threaded hole. When the lifting motor rotates forward, the lifting member drives the third transmission wheel 25 to move upward along the threaded shaft. When the lifting motor rotates in reverse, the lifting member drives the third transmission wheel 25 to move downward along the threaded shaft.

[0054] The structure of the tension adjustment component 3 is simple and reliable, and it adopts a screw drive method. After lifting in place, the position is stable, and there will be no offset phenomenon that causes the position of the third transmission wheel 25 to change and affect the transmission of the conveyor belt 1.

[0055] In a specific embodiment, the conveyor belt correction structure further includes a support frame 6 arranged outside the spiral part of the conveyor belt 1. The support frame 6 has multiple columns 61, and is connected by horizontal connecting rods to form a frame. The mounting column for installing the displacement sensor 43 is one of the columns 61, and the push rod part is also installed on one of the columns 61 of the support frame 6, which is convenient for the push rod part to push up and down.

[0056] Specifically, the push rod part includes a push rod motor 53 and a vertically arranged push rod 51; the push rod 51 is located on the side of the spiral part of the conveyor belt 1, specifically installed on the column of the support frame 6. There is a position-limiting structure on one side of the column to limit the lateral movement of the push rod, so that the push rod 51 can only move vertically up and down. The limiting part 52 is horizontally connected to the side of the push rod 51 and extends into the gap of the spiral part of the conveyor belt 1, that is, each limiting part 52 is just located directly above each spiral section 11 of the conveyor belt 1. The specific way of the push rod motor 53 to push the push rod 51 is the same as the pushing method of the tension adjustment component 3, that is, a screw rod driven to rotate by the push rod motor 53 is also set, and the end of the push rod can be fixedly connected with a threaded kit (such as a nut) that cooperates with the screw rod, so that when the push rod motor rotates the screw rod, it can drive the push rod to push.

[0057] In other embodiments, a cylinder can also be directly set to replace the push rod motor in the above embodiment, and the telescopic rod of the cylinder is directly used to achieve the purpose of telescopic pushing, and the structure is simpler.

[0058] The present utility model also proposes a spiral quick-freezing machine, including the above conveyor belt correction structure.

[0059] By adopting the above conveyor belt correction structure, the spiral quick-freezing machine can quickly correct the abnormal conditions of the conveyor belt. For example, when the conveyor belt turns over or jams, the tension adjustment component can be used to increase the looseness of the conveyor belt, which is convenient for correcting the conveyor belt.

[0060] Such as Figure 3 、 4As shown in the figure, the present utility model also proposes a conveyor belt correction method, which uses the above conveyor belt correction structure and specifically includes the following steps:

[0061] Detect the state of the conveyor belt;

[0062] When the belt turning sensor detects that the spiral section of the conveyor belt turns, that is, when the conveyor belt has a turning situation; control the rotating component to stop, control the tension adjusting component to adjust the distance between some of the driving wheels to increase the looseness of the conveyor belt, then control the push rod part to drive the limit part to press down to reset the turned conveyor belt, and finally control the tension adjusting component to reset some of the driving wheels.

[0063] When there is a turning situation, there is no need for manual belt turning. Through the automatic belt turning of the belt turning sensor and the push rod part, the turned spiral section automatically returns to its original position.

[0064] After controlling the tension adjusting component to reset some of the driving wheels, if an abnormality occurs again, directly stop the machine and give an alarm prompt.

[0065] In a specific embodiment, when the displacement sensor detects that the transmission speed of the spiral section of the conveyor belt is abnormal and the tension sensor detects an abnormal tension value (exceeding the tension value detected under normal conditions or the tension value in the previous period);

[0066] Control the rotating component to stop, control the tension adjusting component to adjust the distance between some driving wheels to increase the looseness of the conveyor belt, then control the rotating component to reverse for a preset time to reset the conveyor belt, and finally control the tension adjusting component to reset some of the driving wheels.

[0067] That is, when the conveyor belt is jammed, directly stop the conveyor belt transmission, then loosen the conveyor belt through the tension adjusting component, and then control the rotating component to reverse, so that the jammed conveyor belt automatically returns to its original position, making the conveyor belt return to normal, and then through the tension adjusting component, the conveyor belt restores its tightness so that the conveyor belt can resume transmission again.

[0068] Specifically, by detecting whether the transmission speed of the spiral section of the conveyor belt exceeds the original preset transmission speed range to determine whether the conveyor belt has an abnormal transmission speed. If the conveyor belt has an abnormal transmission speed and the conveyor belt tension value also shows an abnormality simultaneously, it is determined that the conveyor belt is jammed.

[0069] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof in subsequent drawings is not necessary.

[0071] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0072] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" and the like can be used here to describe the spatial positional relationship of a device or feature shown in the drawings with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation depicted in the drawings of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used here will be made.

[0073] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0074] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A conveyor belt correction structure, comprising: A conveyor belt, the inner side of which is spirally arranged around the main body housing to form multiple spiral segments at different heights; A transmission component that circulates the conveyor belt by means of multiple transmission wheels around the conveyor belt outside the spiral part of the conveyor belt. It is characterized in that it further includes: A limiting part, located directly above each spiral segment of the conveyor belt, and is provided with a belt-turning sensor for sensing the turning of the conveyor belt; A push rod part, connected to each of the limiting parts, for driving the limiting part to press down to reset the turned conveyor belt.

2. The conveyor belt correction structure according to claim 1, wherein, It further includes: A tension adjustment component for adjusting the distance between some of the transmission wheels to change the tension of the conveyor belt; A tension sensor, arranged on the conveyor belt to detect the tension signal of the conveyor belt; A rotating component for driving the main body housing and some of the transmission wheels to rotate forward or backward.

3. The conveyor belt correction structure according to claim 2, wherein, It further includes: Displacement sensors corresponding to each spiral segment for respectively detecting the transmission speeds of the respective spiral segments.

4. The conveyor belt correction structure according to claim 3, wherein, Mounting posts are arranged on the outer side of the spiral part of the conveyor belt, and multiple displacement sensors are arranged at different heights of the mounting posts corresponding to the respective spiral segments.

5. The conveyor belt correction structure according to claim 2, wherein, The transmission component includes: A wheel frame, located on one side of the spiral part of the conveyor belt, for mounting the transmission wheels; An upper transmission wheel and a lower transmission wheel. The upper transmission wheel is mounted on the upper part of the wheel frame, and the conveyor belt led out from the top of the spiral part of the conveyor belt bypasses the upper transmission wheel. The lower transmission wheel is mounted on the lower part of the wheel frame, and the conveyor belt led out from the bottom of the spiral part of the conveyor belt bypasses the lower transmission wheel; A combined transmission wheel, mounted on the wheel frame and located between the upper transmission wheel and the lower transmission wheel, with the positions of some of its transmission wheels adjustable, and the conveyor belt passing between the upper transmission wheel and the transmission wheel is wound around it.

6. The conveyor belt correction structure according to claim 5, characterized in that, The combined transmission wheel includes: a first transmission wheel, a second transmission wheel, and a third transmission wheel. The first transmission wheel and the second transmission wheel are arranged at intervals, and the third transmission wheel is located below and between the first transmission wheel and the second transmission wheel. The conveyor belt bypasses the upper transmission wheel and then successively bypasses the second transmission wheel, the third transmission wheel, and the first transmission wheel, and finally bypasses the lower transmission wheel. The tension adjustment component adjusts the height of the rotating shaft of the third transmission wheel.

7. The conveyor belt correction structure according to claim 6, wherein, The tension adjustment component includes: a lifting motor mounted on the wheel frame, a threaded shaft driven to rotate by the lifting motor, and a lifting member threadedly connected to the threaded shaft. The third transmission wheel is connected to the lifting member.

8. The conveyor belt correction structure according to claim 4, wherein, It further includes: A support frame arranged on the outer side of the spiral part of the conveyor belt. The mounting post is a column of the support frame, and the push rod part is mounted on the support frame.

9. The conveyor belt correction structure according to claim 1, characterized in that, The belt-turning sensor is a pressure sensor.

10. A spiral quick-freezing machine, characterized in that, It includes a conveyor belt correction structure according to any one of claims 1 to 9.

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