A gantry type cotton moisture regain detection device

Abstract

The present invention discloses a gantry-type cotton moisture regain detection device, comprising a movable gantry that moves in the longitudinal direction, and a control detection system arranged on the movable gantry, a cotton transport vehicle detection channel arranged in the longitudinal direction is arranged directly below the movable gantry, and a vehicle-mounted bulk cotton moisture regain detection device and / or a cotton mold moisture regain detection device is also arranged on the movable gantry. The system can achieve full coverage detection of the moisture regain of vehicle-mounted bulk cotton and cotton molds through the movable gantry, the detection trolley and the microwave water measurement component. The gantry-type cotton moisture regain detection device solves the problems of high labor intensity of moisture regain detection in the cotton purchasing process, single detection position and limited depth that cannot represent the actual moisture regain of the whole vehicle cotton, detection accuracy being greatly affected by human factors, and slow detection speed, and achieves full coverage detection of the moisture regain of vehicle-mounted bulk cotton and cotton molds, thereby improving the accuracy of detection.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural product detection equipment, and in particular relates to a gantry type cotton moisture regain detection device. Background Art

[0002] Cotton fiber is a porous material. There are many hydrophilic groups on its cellulose macromolecules, which have good hygroscopicity. The hygroscopicity of cotton fiber is related to factors such as ambient temperature. The hygroscopicity of cotton fiber is manifested as the moisture regain of cotton. The moisture regain of cotton affects the mechanical properties of cotton fiber, the quality of cotton processing and storage. In the process of cotton procurement, the moisture regain of cotton is one of the important factors in cotton trade settlement, which is related to the economic interests of cotton farmers and cotton ginning factories.

[0003] In the prior art, a handheld pin-type cotton regain detection device is used to detect the cotton regain in the cotton purchasing process. The problems of this detection method are high labor intensity, a single detection position and limited depth that cannot represent the actual moisture regain of the entire vehicle of cotton, detection accuracy is greatly affected by human factors, and the detection speed is slow. These are technical problems that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a gantry type cotton regain detection device to improve the speed, stability and accuracy of cotton purchase moisture regain detection in order to address the deficiencies of the above-mentioned technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: the gantry-type cotton moisture regain detection device comprises a movable gantry (1) moving in the longitudinal direction and a control detection system (4) arranged on the movable gantry (1); a cotton transport vehicle detection channel (7) arranged in the longitudinal direction is arranged directly below the movable gantry (1); and a vehicle-mounted bulk cotton moisture regain detection device and / or a cotton mold moisture regain detection device are also arranged on the movable gantry (1);

[0006] The vehicle-mounted bulk cotton moisture regain detection device is a mobile detection trolley (2) placed on a mobile door frame (1), the mobile detection trolley (2) comprising a vertical adjustment mechanism (22), a detection rod group (23), a support frame (24) and a transverse adjustment mechanism (21), the mobile detection trolley (2) being connected to the mobile door frame (1) via the transverse adjustment mechanism (21) and being movable in the transverse direction;

[0007] When the bulk cotton on board is parked in the detection channel (7) of the cotton transport vehicle, the detection system (4) is controlled to adjust the longitudinal position of the movable gantry (1) along the cotton transport vehicle (5) and the lateral position of the movable detection trolley (4) along the cotton transport vehicle (5) to ensure that the detection rod group (23) is located directly above the cotton (6) in the cotton transport vehicle (5), and then the vertical adjustment mechanism (22) is controlled to adjust the detection rod group (23) to move downward and insert it into the cotton (6) to detect the resistance value of the cotton, thereby completing the moisture regain detection of the bulk cotton on board;

[0008] The cotton mold moisture regain detection device is a microwave water detection component (3) placed on the movable gantry (1), the microwave water detection component (3) comprising a microwave transmitting end (31) and a microwave receiving end (32) symmetrically mounted on both sides of the movable gantry (1) in the horizontal direction, the microwave transmitting end (31) and the microwave receiving end (32) being mounted on the movable gantry (1) via a vertical height adjustment mechanism (33), and the microwave transmitting end (31) and the microwave receiving end (32) being able to achieve height adjustment via the vertical height adjustment mechanism (33);

[0009] When the cotton mold is parked in the cotton transport vehicle detection channel (7), the control detection system (4) adjusts the longitudinal position of the movable gantry (1) along the cotton transport vehicle (5) and the vertical height of the microwave transmitting end (31) and the microwave receiving end (32) of the microwave water detection component (3) to ensure that the microwave transmitting end (31) and the microwave receiving end (32) are directly opposite and coaxially arranged. The microwave transmitting end (31) transmits microwaves to the cotton mold to be tested, and the microwave receiving end (32) receives the echo signal formed after the microwave is projected through the cotton mold, and transmits the echo signal to the control detection system (4). The control detection system (4) analyzes the echo signal to complete the moisture regain detection of the cotton mold.

[0010] The mobile gantry (1) comprises rails (11) arranged on both sides of the cotton transport vehicle detection channel (7) and a driving ground beam (12), support legs (13) and a double-beam support platform (14) arranged on the rails (11); the mobile detection trolley (2) is connected to the double-beam support platform (14) of the mobile gantry (1) and moves laterally along the double-beam support platform (14).

[0011] The double-beam support platform (14) is a hollow box-type structure.

[0012] The vertical adjustment mechanism (22) is provided with a corresponding sliding plate (226), and two detection rod groups (23) are provided on one sliding plate (226).

[0013] The support frame (24) comprises an upper support plate (2401), a support frame (241) and a lower support plate (2402) which are connected in sequence.

[0014] The lateral adjustment mechanism (21) comprises a linear slide rail (2101), a slider (2102) slidably matched with the linear slide rail, a gear (2103), a rack (2104) meshing with the gear (2103), and a first drive device (211); the linear slide rail (2101) and the rack (2104) are transversely connected to the upper surface of the double-beam support platform (14); the gear (2103), the slider (2102), and the first drive device (211) are connected to the lower support plate (2402) of the mobile inspection trolley (2); under the drive of the first drive device (211), the gear (2103) meshing with the rack (2104) rotates and drives the mobile inspection trolley (2) equipped with the slider (2102) to move transversely along the linear slide rail (2101).

[0015] The vertical adjustment mechanism (22) comprises a second drive device (221), a second drive device fixing seat (222) fixed on the upper support plate (2401), a coupling (223), a screw transmission pair (225), a sliding plate (226) for arranging the detection rod group 23, a guide rod (2201) and a guide sleeve (228), and the screw transmission pair (225) comprises a ball screw (22501) and a ball screw nut (2251) connected to the sliding plate (226); the guide rod (2201) is connected to the upper support plate (2401) and the lower support plate (2402) via a guide rod support (227); the ball screw (22501) ) is connected to the upper support plate (2401) and the lower support plate (2402) via a seat bearing (224), the second drive device (221) is connected to the upper end of the ball screw (22501) via a coupling (223), the sliding plate (226) is connected to the guide rod (2201) via a guide sleeve (228) to form a sliding fit, and the ball screw nut (2251) and the ball screw (22501) form a spiral fit; under the drive of the vertical second drive device (221), the ball screw (22501) rotates, and the ball screw nut (2251) drives the sliding plate (226) to move up and down along the guide rod (2201) inside the support frame (24).

[0016] The guide rods (2201) are centrally symmetrically distributed relative to the ball screw (22501), and four guide rods (2201) correspond to one screw transmission pair (225).

[0017] The detection rod group (23) comprises a detection rod (2302), a detection connecting sleeve (2301) fixed on the sliding plate, a detection rod guide sleeve (231) fixed on the lower support plate (2402), and a detection tip (232), wherein the upper end of the detection rod (2302) is connected to the sliding plate (226) via the detection connecting sleeve (2301), the lower end of the detection rod (2302) is connected to the detection rod tip (232), and the sliding plate (226) drives the detection rod (2302) to move up and down along the detection rod guide sleeve (231).

[0018] The vertical adjustment mechanisms (22) are provided in two groups in the transverse direction and are symmetrically installed in the support frame (24).

[0019] The beneficial effects of the present invention are:

[0020] 1) The gantry-type cotton moisture regain detection device can realize the automation of moisture regain detection in the cotton purchasing process through the coordinated setting of a mobile gantry, a mobile detection trolley, a microwave water measurement component and a control detection system, and solves the problems of high labor intensity of moisture regain detection in the cotton purchasing process, a single detection position and limited depth that cannot represent the actual moisture regain of the whole vehicle of cotton, a large influence of human factors on the detection accuracy and a slow detection speed;

[0021] 2) At the same time, the sampling points for cotton testing can cover any position of the cotton in the whole vehicle, ensuring the representativeness of the sampling, realizing full coverage testing of the moisture regain of the bulk cotton and cotton molds on the vehicle, and improving the accuracy of the test;

[0022] 3) The detection process is not affected by human factors, which improves the efficiency of cotton regain detection during the purchase process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural stereogram of the present invention;

[0024] Figure 2 It is a structural front view of the present invention;

[0025] Figure 3 It is a structural side view of the present invention;

[0026] Figure 4 It is a top view of the structure of the present invention;

[0027] Figure 5 This is a structural diagram of a mobile inspection vehicle;

[0028] Figure 6 It is a side view of the mobile inspection vehicle;

[0029] Figure 7 It is a partially enlarged schematic diagram of the lateral adjustment mechanism. DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0031] The present invention provides a gantry type cotton moisture regain detection device, such as Figures 1 to 7 As shown. The gantry-type cotton moisture regain detection device comprises a movable gantry 1 that moves in the longitudinal direction and a control detection system 4 disposed on the movable gantry 1. A cotton transport vehicle detection channel 7 disposed in the longitudinal direction is disposed directly below the movable gantry 1. The movable gantry 1 is also provided with a vehicle-mounted bulk cotton moisture regain detection device and / or a cotton mold moisture regain detection device. In this embodiment, the control detection system 4 is provided with a wireless remote controller. During detection, the gantry-type cotton moisture regain detection device can be controlled by operating the wireless remote controller.

[0032] The vehicle-mounted bulk cotton moisture regain detection device is a mobile detection trolley 2 placed on a mobile gantry 1. The mobile detection trolley 2 includes a vertical adjustment mechanism 22, a detection rod group 23, a support frame 24 and a lateral adjustment mechanism 21. The mobile detection trolley 2 is connected to the mobile gantry 1 through the lateral adjustment mechanism 21 and moves laterally.

[0033] When the on-board bulk cotton is parked in the cotton transport vehicle detection channel 7, the detection system 4 is controlled to adjust the longitudinal position of the movable gantry 1 along the cotton transport vehicle 5 and the lateral position of the movable detection trolley 4 along the cotton transport vehicle 5 to ensure that the detection rod group 23 is located directly above the cotton 6 in the cotton transport vehicle 5, and then the vertical adjustment mechanism 22 is controlled to adjust the detection rod group 23 to move downward and insert into the cotton 6 to detect the cotton resistance value, thereby completing the moisture regain detection of the on-board bulk cotton.

[0034] The cotton mold moisture regain detection device is a microwave water measuring group 3 placed on the movable gantry 1, and the microwave water measuring component 3 includes a microwave transmitting end 31 and a microwave receiving end 32 symmetrically installed on both sides of the movable gantry 1, and the microwave transmitting end 31 and the microwave receiving end 32 are both installed on the movable gantry 1 through a vertical height adjustment mechanism 33, and the microwave transmitting end 31 and the microwave receiving end 32 can be adjusted in height through the vertical height adjustment mechanism 33. In this embodiment, the vertical height adjustment mechanism 33 can be used in conjunction with a conventional ball screw, a rack and a gear, and a guide bar.

[0035] When the cotton mold is parked in the cotton transport vehicle detection channel 7, the control detection system 4 adjusts the longitudinal position of the movable gantry 1 along the cotton transport vehicle 5 and the vertical heights of the microwave transmitting end 31 and the microwave receiving end 32 of the microwave water measuring component 3 to ensure that the microwave transmitting end 31 and the microwave receiving end 32 are directly opposite and coaxially arranged, the microwave transmitting end 31 transmits the microwave to the cotton mold to be tested, the microwave receiving end 32 receives the echo signal formed after the microwave is projected through the cotton mold, and transmits the echo signal to the control detection system 4, and the control detection system 4 analyzes the echo signal to complete the moisture regain detection of the cotton mold.

[0036] The mobile door frame 1 includes rails 11 arranged on both sides of the cotton transport vehicle detection channel 7, and a driving ground beam 12, a support leg 13 and a double-beam support platform 14 arranged on the rails 11; the mobile detection vehicle 2 is connected to the double-beam support platform 14 of the mobile door frame 1 and moves laterally along the double-beam support platform 14. Preferably, the double-beam support platform 14 is a hollow box-type structure.

[0037] Preferably, two rails 11 are arranged in parallel, two traveling ground beams 12 are arranged in parallel, four support legs are arranged, and one double-beam support platform is arranged. Two rails 11 are arranged in parallel on both sides of the cotton transport vehicle detection channel 7, and the movement direction of the movable gantry 1 is parallel to the travel direction of the cotton transport vehicle 5. In this embodiment, the traveling ground beam 12 is electrically driven. Each rail 11 corresponds to a traveling ground beam 12, and the traveling ground beam 12 moves along the rail 11, and a support leg 13 is connected to both ends of each traveling ground beam 12. The double-beam support platform 14 is arranged on the upper part of the four supporting legs 13 that are centrally symmetrical to form a gantry structure.

[0038] The support frame 24 includes an upper support plate 2401, a lower support plate 2402 and a support frame 241, wherein the upper support plate 2401 is connected to the upper surface of the support frame 241, and the lower support plate 2402 is connected to the lower surface of the support frame 241. Preferably, the support frame 241 is a square frame formed by splicing square hollow steel sections.

[0039] The lateral adjustment mechanism 21 includes a linear slide 2101, a slider 2102 slidably matched with the linear slide, a gear 2103, a rack 2104 meshed with the gear 2103, and a first drive device 211. The mobile inspection trolley 2 is connected to the double-beam support platform 14 of the mobile gantry 1 through the lateral adjustment mechanism 21, and the mobile inspection trolley 3 moves laterally along the double-beam support platform 14, wherein the linear slide 2101 and the rack 2104 are laterally connected to the upper surface of the double-beam support platform 14, the gear 2103, the slider 2102 and the drive device 211 are connected to the lower support plate 2402 of the support frame 24 of the mobile inspection trolley 2, and under the drive of the drive device 211, the gear 2103 meshed with the rack 2104 rotates to drive the movable inspection trolley 2 equipped with the slider 2102 to move laterally along the linear slide 2101.

[0040] The vertical adjustment mechanism 22 includes a second drive device 221, a second drive device fixing seat 222 fixed on the upper support plate 2401, a coupling 223, a spiral transmission pair 225, a sliding plate 226 for arranging the detection rod group 23, a guide rod 2201 and a guide sleeve 228, and the spiral transmission pair 225 includes a ball screw 22501 and a ball screw nut 2251 connected to the sliding plate 226; the guide rod 2201 is connected to the upper support plate 2401 and the lower support plate 2402 through the guide rod support 227, and the ball screw 22501 The upper support plate 2401 and the lower support plate 2402 are connected through the seat bearing 224, the second driving device 221 is connected to the upper end of the ball screw 22501 through the coupling 223, the sliding plate 226 is connected to the guide rod 2201 through the guide sleeve 228 to form a sliding fit, and the ball screw nut 2251 and the ball screw 22501 form a spiral fit; under the drive of the vertical second driving device 221, the ball screw 22501 rotates, and the ball screw nut 2251 drives the sliding plate 226 to move up and down along the guide rod 2201 inside the support frame 24. Preferably, the guide rod 2201 is centrally symmetrical with respect to the ball screw 22501, and four guide rods 2201 are provided corresponding to one ball screw pair 225.

[0041] The sliding plate 226 is connected to the guide rod 2201 through the guide sleeve 228 to form a sliding fit; the ball screw nut 2251 and the ball screw 22501 form a spiral fit, and the flange of the ball screw nut 2251 is connected to the sliding plate 226; under the drive of the driving device 222, the ball screw 22501 rotates, and the ball screw nut 2251 drives the sliding plate 226 along the guide rod 2201 to move up and down inside the support frame 34.

[0042] Preferably, a transverse adjustment mechanism is provided at the bottom of the mobile inspection vehicle 2 , a support frame is provided, and two sets of vertical adjustment mechanisms 22 are provided transversely along the mobile inspection vehicle 2 , and are symmetrically installed in the support frame 34 along the transverse direction.

[0043] The detection rod group 23 includes a detection rod 2302, a detection connecting sleeve 2301 fixed on the sliding plate, a detection rod guide sleeve 231 fixed on the lower support plate 2402, and a detection tip 232, and the upper end of the detection rod 2302 is connected to the sliding plate 226 through the detection connecting sleeve 2301, the lower end of the detection rod 2302 is connected to the detection rod tip 232, and the sliding plate 226 drives the detection rod 2302 to move up and down along the detection rod guide sleeve 231.

[0044] Preferably, each vertical adjustment mechanism 22 corresponds to a sliding plate 226 , each sliding plate 226 corresponds to two detection rod groups 23 , and each detection rod group 23 includes a detection rod connecting sleeve 2301 , a detection rod 2302 , a detection rod guide sleeve 231 and a group of detection tips 232 .

[0045] For bulk cotton on board, the cotton regain detection principle of the gantry-type cotton regain detection device is based on the resistance method. During the cotton purchasing process, the cotton transport vehicle 5 is parked in the cotton transport vehicle detection channel 7. The detection system 4 is controlled to adjust the longitudinal position of the movable gantry 1 along the cotton transport vehicle 5 and the lateral position of the movable detection trolley 4 along the cotton transport vehicle 5 to ensure that the detection group 23 is located directly above the cotton 6 in the cotton transport vehicle 5. Then the vertical adjustment mechanism 22 is controlled to adjust the detection rod 2302 to move downward, and the detection head 232 is inserted into the cotton 6, and its detection depth is adjustable. The control detection system 4 detects the cotton resistance value through the detection head 232, and then completes the moisture regain detection of the bulk cotton on board. After a single detection is completed, the control detection system 4 retracts the detection rod 2302 to a safe position through the vertical adjustment mechanism 22. After one detection is completed, the detection position is changed by adjusting the movable gantry 1 along the longitudinal position of the cotton transport vehicle 5 by the control detection system 4 to perform the next detection. The detection action is as described above. It can be seen from the preferred solution that a single test can complete the cotton regain test at four points at the same depth. If two depths are tested in a single test, eight points can be tested in a single test, and sixteen points can be tested in two tests.

[0046] For cotton molds, the gantry-type cotton regain detection device is also provided with a microwave water measuring component 3, and the cotton regain detection principle of the device can also adopt the microwave method. During the cotton purchasing process, the cotton transport vehicle 5 is parked in the cotton transport vehicle detection channel 7, and the control detection system 4 adjusts the longitudinal position of the movable gantry 1 along the cotton transport vehicle 5 and the vertical height of the microwave transmitting end 31 and the microwave receiving end 32 of the microwave water measuring component 3 to ensure that the microwave transmitting end 31 and the microwave receiving end 32 are directly opposite and coaxially arranged at the center, and the microwave transmitting end 31 transmits microwaves to the cotton mold 6 to be tested, and the microwave receiver 32 receives the echo signal formed after the microwave is projected through the cotton mold 6, and transmits the echo signal to the control detection system 4, and the control detection system 4 analyzes the echo signal to complete the cotton mold regain detection.

[0047] The gantry-type cotton moisture regain detection device improves the speed of cotton moisture regain detection by combining the resistance method and the microwave method, and also ensures accuracy and stability.

[0048] If the words "first", "second" and the like are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description, and the above words have no special meaning.

[0049] The basic principles, main features and advantages of the present invention are shown and described above. The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

[0050] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "center", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. A gantry type cotton moisture regain detection device, characterized in that: The invention comprises a movable gantry (1) which moves in the longitudinal direction and a control detection system (4) arranged on the movable gantry (1); a cotton transport vehicle detection channel (7) arranged in the longitudinal direction is arranged directly below the movable gantry (1); and a vehicle-mounted bulk cotton moisture regain detection device and / or a cotton mold moisture regain detection device are also arranged on the movable gantry (1); The vehicle-mounted bulk cotton moisture regain detection device is a mobile detection trolley (2) placed on a mobile door frame (1), the mobile detection trolley (2) comprising a vertical adjustment mechanism (22), a detection rod group (23), a support frame (24) and a transverse adjustment mechanism (21), the mobile detection trolley (2) being connected to the mobile door frame (1) via the transverse adjustment mechanism (21) and being movable in the transverse direction; When the bulk cotton on board is parked in the detection channel (7) of the cotton transport vehicle, the detection system (4) is controlled to adjust the longitudinal position of the movable gantry (1) along the cotton transport vehicle (5) and the lateral position of the movable detection trolley (2) along the cotton transport vehicle (5) to ensure that the detection rod group (23) is located directly above the cotton (6) in the cotton transport vehicle (5), and then the vertical adjustment mechanism (22) is controlled to adjust the detection rod group (23) to move downward and insert into the cotton (6) to detect the resistance value of the cotton, thereby completing the moisture regain detection of the bulk cotton on board; The cotton mold moisture regain detection device is a microwave water detection component (3) placed on the movable gantry (1), the microwave water detection component (3) comprising a microwave transmitting end (31) and a microwave receiving end (32) symmetrically mounted on both sides of the movable gantry (1) in the horizontal direction, the microwave transmitting end (31) and the microwave receiving end (32) being mounted on the movable gantry (1) via a vertical height adjustment mechanism (33), and the microwave transmitting end (31) and the microwave receiving end (32) being able to achieve height adjustment via the vertical height adjustment mechanism (33); When the cotton mold is parked in the cotton transport vehicle detection channel (7), the control detection system (4) adjusts the longitudinal position of the movable gantry (1) along the cotton transport vehicle (5) and the vertical height of the microwave transmitting end (31) and the microwave receiving end (32) of the microwave water detection component (3) to ensure that the microwave transmitting end (31) and the microwave receiving end (32) are directly opposite and coaxially arranged, the microwave transmitting end (31) transmits microwaves to the cotton mold to be tested, the microwave receiving end (32) receives the echo signal formed after the microwave is projected through the cotton mold, and transmits the echo signal to the control detection system (4), and the control detection system (4) analyzes the echo signal to complete the moisture regain detection of the cotton mold; The mobile gantry (1) comprises rails (11) arranged on both sides of the cotton transport vehicle detection channel (7) and a driving ground beam (12), support legs (13) and a double-beam support platform (14) arranged on the rails (11); the mobile detection trolley (2) is connected to the double-beam support platform (14) of the mobile gantry (1) and moves laterally along the double-beam support platform (14); The support frame (24) comprises an upper support plate (2401), a support frame (241) and a lower support plate (2402) which are connected in sequence; The lateral adjustment mechanism (21) comprises a linear slide rail (2101), a slider (2102) slidably matched with the linear slide rail, a gear (2103), a rack (2104) meshing with the gear (2103), and a first drive device (211); the linear slide rail (2101) and the rack (2104) are transversely connected to the upper surface of the double-beam support platform (14); the gear (2103), the slider (2102), and the first drive device (211) are connected to the lower support plate (2402) of the mobile inspection trolley (2); under the drive of the first drive device (211), the gear (2103) meshing with the rack (2104) rotates and drives the mobile inspection trolley (2) equipped with the slider (2102) to move transversely along the linear slide rail (2101); The vertical adjustment mechanism (22) comprises a second drive device (221), a second drive device fixing seat (222) fixed on the upper support plate (2401), a coupling (223), a screw transmission pair (225), a sliding plate (226) for arranging the detection rod group 23, a guide rod (2201) and a guide sleeve (228), and the screw transmission pair (225) comprises a ball screw (22501) and a ball screw nut (2251) connected to the sliding plate (226); the guide rod (2201) is connected to the upper support plate (2401) and the lower support plate (2402) via a guide rod support (227); the ball screw (22501) ) is connected to the upper support plate (2401) and the lower support plate (2402) via a seat bearing (224), the second drive device (221) is connected to the upper end of the ball screw (22501) via a coupling (223), the sliding plate (226) is connected to the guide rod (2201) via a guide sleeve (228) to form a sliding fit, and the ball screw nut (2251) and the ball screw (22501) form a spiral fit; under the drive of the vertical second drive device (221), the ball screw (22501) rotates, and the ball screw nut (2251) drives the sliding plate (226) to move up and down along the guide rod (2201) inside the support frame (24).

2. A gantry type cotton moisture regain detection device according to claim 1, characterized in that: The double-beam support platform (14) is a hollow box-type structure.

3. A gantry type cotton moisture regain detection device according to claim 1, characterized in that: The vertical adjustment mechanism (22) is provided with a corresponding sliding plate (226), and two detection rod groups (23) are provided on one sliding plate (226).

4. A gantry type cotton moisture regain detection device according to claim 1, characterized in that: The guide rods (2201) are centrally symmetrically distributed relative to the ball screw (22501), and four guide rods (2201) correspond to one screw transmission pair (225).

5. A gantry type cotton moisture regain detection device according to claim 4, characterized in that: The detection rod group (23) comprises a detection rod (2302), a detection connecting sleeve (2301) fixed on the sliding plate, a detection rod guide sleeve (231) fixed on the lower support plate (2402), and a detection tip (232), wherein the upper end of the detection rod (2302) is connected to the sliding plate (226) via the detection connecting sleeve (2301), the lower end of the detection rod (2302) is connected to the detection rod tip (232), and the sliding plate (226) drives the detection rod (2302) to move up and down along the detection rod guide sleeve (231).

6. A gantry type cotton moisture regain detection device according to any one of claims 1 to 5, characterized in that: The vertical adjustment mechanisms (22) are provided in two groups in the transverse direction and are symmetrically installed in the support frame (24).

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