Labor-saving pit mud and fermented grain sampler

Abstract

The utility model relates to a pit mud and fermented grain sampler which comprises a supporting platform stretching across a pit and a sampling trolley movably arranged on the supporting platform, a spiral elevator is arranged on the sampling trolley, a plurality of sections of screw rods are sequentially and detachably connected to form a sectional lifting rod structure, and the bottom end of the structure is connected with a sampling pipe. The spiral elevator is in meshed transmission with the screw rod to drive the sampling pipe to lift; wherein the sampling trolley is configured to move along the supporting platform to adjust the horizontal sampling position of the sampling pipe, and adjust the sampling depth of the sampling pipe by increasing or decreasing the section number of the screw rod. According to the sampler disclosed by the utility model, the three-dimensional positioning control of the sampling pipe is realized through the collaborative design of the supporting platform and the sampling trolley. The sampling position is adjusted through horizontal movement, and the sampling depth is flexibly adjusted through the sectional screw rod, so that the sampling flexibility and coverage range are remarkably improved, the physical output of manual operation is reduced, and the sampling precision and efficiency are ensured.

Description

Technical Field

[0001] This utility model relates to the field of fermentation mash sampling technology, and in particular to a labor-saving cellar mud and fermentation mash sampler. Background Technology

[0002] In the field of baijiu (Chinese liquor) brewing, strong-aroma baijiu has won widespread market recognition for its unique brewing process and superior quality. This type of baijiu uses grains as its main raw material, selects specific strong-aroma koji (a type of starter culture) as the saccharification and fermentation agent, and is meticulously brewed through a series of complex processes including solid-state fermentation in mud pits, solid-state distillation, aging, and blending. Its notable characteristics are a rich cellar aroma, harmonious flavor, and a long finish. These qualities have enabled strong-aroma baijiu to occupy approximately 60% of the baijiu market share, making it the first choice for many consumers.

[0003] In the brewing process of strong-aroma baijiu, solid-state fermentation plays a crucial role. This method utilizes natural microorganisms in the brewing pits for long-term, sealed fermentation, generating unique aroma and flavor compounds. Therefore, liquor producers must conduct in-depth analysis and research on the mash and pit mud in their fermentation pits. The quality of the mash and pit mud directly affects the taste and quality of the finished baijiu, and is key to brewing high-quality strong-aroma baijiu.

[0004] However, existing methods for sampling fermentation pit mud and mash present numerous challenges. This is particularly true during the fermentation cycle of strong-aroma baijiu, where frequent sampling to monitor fermentation is necessary, rendering traditional manual sampling methods inadequate. Firstly, commonly used mash sampling equipment, such as the Luoyang shovel, encounters significant resistance when inserting or withdrawing the sampler from the pit, especially when dealing with mash containing a large amount of highly resilient and elastic rice husks. This makes the sampling process laborious and time-consuming. Secondly, since the pit mud is located approximately two meters below ground level, manually inserting the sampler into such deep mash is not only time-consuming and laborious but also significantly increases the workload for operators. Furthermore, the high moisture content of the pit mud strongly attracts the sampling head, and the pressure and friction exerted by the mash above make it difficult to remove the sampling head smoothly. When inserting the sampler, it is difficult for the sampler to apply force vertically downwards every time. This can lead to a larger sampling wound and deviation in the sampling position, thus affecting the accuracy and representativeness of the sampling.

[0005] In summary, existing sampling techniques have many shortcomings in sampling mash and cellar mud during the brewing process of strong-aroma baijiu. There is an urgent need to develop a more efficient, accurate, and convenient sampling technique to solve the problems existing in the current technology, improve sampling efficiency and accuracy, and provide a strong guarantee for brewing high-quality strong-aroma baijiu.

[0006] CN222280240U discloses a sampling device for fermented mash in the processing of Maotai-flavor liquor. The device includes a support base, a bracket assembly, an adjustment unit, and a sampling unit. The adjustment unit adjusts the horizontal position of the sampling unit through a drive motor and a lead screw, and the sampling unit achieves sampling of the fermented mash through an electric telescopic rod and a piston.

[0007] However, this device has some shortcomings in practical use. First, after the sampling unit completes sampling, the operator needs to stand at the edge of the fermentation pit to obtain the mash sample from the sampling tube. This operation may damage the pit lining mud. The pit lining mud is an important component of the fermentation pit, and its integrity and stability have a significant impact on the brewing process of baijiu. Once the pit lining mud is damaged, it may affect the sealing and microbial environment of the fermentation pit, thus adversely affecting the quality of the baijiu. Second, after sampling, the operator needs to reseal the pit. This process not only increases the workload of the operator, but may also lead to a decrease in the sealing performance of the pit due to improper sealing or operation, affecting the subsequent fermentation process. In addition, frequent opening and closing of the pit will also increase the risk of outside air and microorganisms entering the pit, which may contaminate the fermentation environment of the mash, thus affecting the flavor and quality of the baijiu.

[0008] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that this utility model does not have the features of these prior art. On the contrary, this utility model has all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Utility Model Content

[0009] In view of the shortcomings of the prior art, this application proposes a sampler, especially a labor-saving sampler for cellar mud and mash, which aims to solve one or more technical problems in the prior art.

[0010] This utility model relates to a labor-saving sampler for cellar mud and mash, which includes a support platform spanning the cellar and a sampling trolley movable on the support platform. The sampling trolley is equipped with a screw jack, and multiple sections of screw rods are detachably connected in sequence to form a segmented lifting rod structure. The bottom end of the structure is connected to a sampling tube. The screw jack meshes with the screw rods to drive the sampling tube to rise and fall. The sampling trolley is configured to move along the support platform to adjust the horizontal sampling position of the sampling tube, and to adjust the sampling depth of the sampling tube by increasing or decreasing the number of screw rod sections.

[0011] This design achieves precise positioning of the sampling tube within the three-dimensional space of the pit through the coordinated operation of the support platform and the sampling trolley. The support platform spans the pit, providing a stable base for the sampling trolley's movement. Combined with the detachable structure of the segmented lead screw, operators can flexibly increase or decrease the number of lead screw sections according to the pit's depth, significantly expanding the vertical travel range of the sampling tube. Horizontally, the trolley moves along the support platform's slide rails, covering any sampling point across the entire width of the pit. This three-dimensional adjustment mechanism not only reduces the physical exertion of manual positioning but also avoids the sampling position deviation problem caused by force direction errors in traditional sampling. Furthermore, the worm gear drive of the screw jack has a self-locking function, ensuring the sampling tube remains stable during lifting and lowering, preventing accidental sinking or rebound due to gravity or external interference, thereby improving the repeatability and representativeness of the sampling, making it particularly suitable for the complex conditions of deep pits.

[0012] According to a preferred embodiment, the screw jack is internally fitted with a transmission nut, the internal thread of which engages with the external thread of the lead screw; a through hole is provided on the top of the sampling trolley corresponding to the installation position of the screw jack to allow the lead screw and sampling tube to pass through. The engagement of the transmission nut and the lead screw provides a stable lifting driving force and reduces mechanical vibration; the through hole design simplifies the structural layout, avoids interference between the movement paths of the lead screw and the sampling tube, and ensures smooth and unobstructed lifting.

[0013] According to a preferred embodiment, the lead screw has an external threaded groove formed at its top and an internal threaded groove machined at its bottom to match the external threaded groove. A sampling connector is fixedly installed at the top of the sampling tube, and the outer surface of the sampling connector has a threaded structure. The sampling tube and the lifting rod structure are detachably connected by screwing into the internal threaded groove at the bottom of the lead screw. The threaded engagement of the external and internal threaded grooves enables quick assembly and disassembly, facilitating the addition or reduction of the number of lead screw sections according to the depth of the fermentation pit. The sealing design of the sampling connector prevents the seepage of fermented mash, enhances connection stability, and improves equipment maintenance efficiency and adaptability.

[0014] According to a preferred embodiment, a sampling window is provided on the side of the sampling trolley; when the segmented lifting rod structure completes sampling and rises to the set height, the sampling tube moves to the operable area of ​​the sampling window. After the sampling tube rises to the window area, the sample can be extracted directly without disassembling the lifting rod or moving the trolley, simplifying the operation process, reducing the risk of damage to the pit mud, and improving sampling safety and efficiency.

[0015] According to a preferred embodiment, the sampling trolley is equipped with multiple wheels at its bottom, each wheel having an independent brake lock. When the sampling trolley moves to a predetermined sampling position marked with a horizontal reference point, each brake lock acts on the axle of the wheel to bring the sampling trolley to a stop. The wheels enable precise movement of the trolley, and the independent brake locks ensure that the position is fixed after stopping, eliminating the risk of trolley slippage during operation, ensuring consistency of sampling positions, and improving positioning accuracy and operational safety.

[0016] According to a preferred embodiment, the support platform includes a support plate and a lifting column installed at its bottom. The telescopic end of the lifting column is connected to the lower surface of the support plate to achieve overall height adjustment of the platform. An elongated sampling groove is formed on the upper surface of the support plate along the travel direction of the sampling trolley, and the width of the sampling groove is clearance-fitted with the diameter of the lead screw. The lifting column adjusts the platform height to adapt to different pit depths; the clearance fit between the sampling groove and the lead screw reduces frictional resistance, ensures smooth vertical lifting of the lead screw, and enhances the adaptability of the equipment to different working conditions.

[0017] According to a preferred embodiment, a segmented linear slide rail assembly is embedded inside the support plate. The slide rail assembly includes a fixed base section and a sliding extension section. The sliding extension section can move linearly in both directions along the length axis of the support plate. The effective length of the support plate is adjusted by the displacement distance of the sliding extension section. After the displacement ends, the end of the sliding extension section forms a mechanical interlock with the side wall of the support plate. The sliding extension section adjusts the effective length of the support plate to adapt to different pit sizes. The mechanical interlock ensures the structural rigidity after the extension section is fixed, preventing slippage and loosening, and improving the stability and versatility of the equipment.

[0018] According to a preferred embodiment, the upper surfaces of the fixed base section and the sliding extension section are provided with continuous guide grooves, the extension direction of which is parallel to the longitudinal axis of the support plate. The rims of the traveling wheels form a clearance fit with the cross-sectional contour of the guide grooves, ensuring that the traveling wheels maintain their trajectory along the guide groove path before and after the sliding extension section's displacement. The guide grooves constrain the traveling wheel's trajectory, while the clearance fit allows for slight fluctuations, ensuring precise trolley movement direction while avoiding jamming caused by uneven support plate surfaces, thus improving movement reliability and repeatability.

[0019] According to a preferred embodiment, the top and bottom ends of the drive nut of the screw jack extend to form an annular dust cover. The outer circumferential edge of the dust cover abuts against the housing of the screw jack, and its inner wall maintains a dynamic sealing gap with the external thread on the outer surface of the lead screw. The annular dust cover forms a dynamic seal, effectively preventing mash particles and dust from entering the meshing area between the drive nut and the lead screw, reducing wear and failure rate, extending equipment service life, and reducing maintenance frequency.

[0020] According to a preferred embodiment, an annular anti-loosening groove is provided at the threaded connection between the outer and inner threaded grooves of the lead screw, and an elastic retaining ring is embedded in the anti-loosening groove. The elastic retaining ring embedded in the anti-loosening groove suppresses loosening at the threaded connection caused by vibration or load, ensuring the stability of the lead screw connection during lifting and lowering, and improving the operational safety and long-term reliability of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the disassembly structure of the sampling trolley of the sampler of this utility model;

[0022] Figure 2 This is a schematic diagram of the lead screw and sampling tube of the sampler of this utility model from a top-down oblique view.

[0023] Figure 3 This is a schematic diagram of the lead screw and sampling tube of the sampler of this utility model from an oblique upward viewing angle;

[0024] Figure 4 This is a schematic diagram from one perspective of the sampler of this utility model being placed above the cellar.

[0025] Figure 5 This is a schematic diagram from another perspective showing the sampler of this utility model placed above the cellar.

[0026] Figure 6 This is a partially enlarged view of the sampling trolley and support platform of the sampler of this utility model.

[0027] Figure 7 This is a disassembled structural diagram of the slide rail assembly of the sampler of this utility model;

[0028] Figure 8 This is a schematic diagram of the slide rail assembly of the sampler of this utility model in the connected state.

[0029] List of reference numerals

[0030] 100: Sampling trolley; 110: Lead screw; 111: External thread groove; 112: External thread; 113: Internal thread groove; 120: Sampling tube; 121: Sampling connector; 130: Screw jack; 131: Internal thread; 140: Sampling window; 150: Traveling wheel; 200: Support platform; 210: Lifting column; 220: Support plate; 230: Sampling through groove; 240: Slide rail assembly; 241: Sliding extension section; 242: Fixed base section; 243: Guide groove; 300: Pit. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings.

[0032] Location definition: combined with Figure 1 The end of the lead screw 110 furthest from the sampling trolley 100 is the top end, and the other end of the lead screw 110 is the bottom end.

[0033] This embodiment relates to a labor-saving device for sampling cellar mud and fermented mash, the main structure of which is composed of a support platform 200 and a sampling trolley 100 working together. For example... Figure 1 , Figure 4As shown, the support platform 200 is a rectangular frame made of high-strength alloy steel, spanning above the pit 300. Adjustable-height vertical columns are installed at the four corners of the frame, allowing for lifting to accommodate pits 300 of varying depths. To enhance overall stability, multiple horizontal reinforcement structures are added to the bottom of the frame, effectively reducing bending deformation during operation. The sampling trolley 100 is mounted on the support platform 200, with double-row wheels 150 installed at its four corners. These wheels cooperate with the slide rail assembly 240 on the platform surface for horizontal movement. The wheels 150 are covered with an elastic material, ensuring smooth movement while reducing vibration interference during operation. The trolley is equipped with a quick-locking device, which, through the cooperation of an internal spring and the slide rail assembly 240, immediately secures the trolley after selecting the sampling position, preventing displacement during operation.

[0034] Preferably, such as Figure 1 As shown, a screw jack 130 is fixedly installed on the sampling trolley 100. This device adopts a worm gear transmission mechanism and has a self-locking function, which can maintain the positioning stability of the sampling tube 120 in the event of power failure or shutdown. The screw jack 130 is also equipped with a multi-section lead screw 110, which is connected sequentially through a threaded interface to form a segmented lifting rod structure, which is easy to disassemble and adjust. The lead screw 110 is made of high-strength alloy steel and undergoes a heat treatment process to improve its overall strength and wear resistance, ensuring long-term reliability. A transmission nut is embedded inside the screw jack 130, and its internal thread 131 meshes with the external thread 112 of the lead screw 110. The transmission nut of the screw jack 130 adopts an integral structure design, and its top and bottom ends are machined into an integrated annular dust cover. The outer edge of the dust cover extends radially to form a stepped flange, which forms a sealing structure with the annular groove on the inner wall of the screw jack 130 housing. The inner wall of the dust cover is machined with continuous spiral grooves, forming a non-contact airtight interface with the external thread 112 of the lead screw 110. A corresponding annular dust collection chamber is provided on the housing, with an inclined outlet at the bottom of the chamber to direct the discharge of intruding particles. An axial gap between the dust cover and the lead screw 110 is fitted with a wave-shaped elastic retaining ring. The retaining ring has a double-lip seal structure, with the lips facing towards the inside of the nut and the external environment respectively, forming a two-way dust barrier.

[0035] Preferably, the top of the sampling trolley 100 has a through hole corresponding to the position of the screw jack 130, allowing the lead screw 110 and sampling tube 120 to pass vertically through. When the screw jack 130 is started, the worm gear mechanism drives the lead screw 110 to rotate, causing the sampling tube 120 connected to the bottom end to rise and fall smoothly in the vertical direction. The lifting speed is controllable by adjusting the input speed of the screw jack 130, thus adapting to sampling needs at different depths. The screw jack 130 is electrically connected to a motor, control box, etc., so that the operator can control the lifting speed of the lead screw 110 and sampling tube 120 by adjusting the input speed of the screw jack 130, thus adapting to sampling needs at different depths. The sampling tube 120 is detachably fixed to the end of the segmented lifting rod structure. It is made of stainless steel and has a design resembling a Luoyang shovel, combining corrosion resistance and easy cleaning. This structure, through the synergistic effect of the worm gear self-locking and the segmented lead screw 110, simplifies the operation process while ensuring the stability and positioning accuracy of the equipment during sampling.

[0036] Preferably, the sampling operation is achieved through three-dimensional positioning control via the coordinated movement of the support platform 200 and the sampling trolley 100. During operation, after the sampling trolley 100 moves along the slide rail of the support platform 200 to the target position, the screw jack 130 is activated to drive the sampling tube 120 to descend vertically to the set depth for sampling. After sampling is completed, the lifting mechanism raises the sampling tube 120 to a safe height, and the trolley can then move to the next sampling point to repeat the operation. The sampling depth is adjusted through a segmented lifting rod structure. The operator can add or remove the number of sections of the screw rod 110 according to the actual working conditions of the pit 300. Each section is 50cm long, and the length of the screw rod 110 can be adjusted according to the depth of the pit 300 during the actual sampling process to flexibly extend the working stroke of the sampling tube 120 and meet the technical requirements of different pit types and sampling layers.

[0037] This device, through the coordinated control of horizontal movement and vertical lifting, enables the sampling tube 120 to precisely reach any sampling point within the three-dimensional space of the fermentation pit 300. When sampling the mash and pit mud in the middle of the fermentation pit 300, the sampling personnel can safely stand on the sampling platform to operate, which not only greatly reduces damage to the pit mud but also significantly reduces the workload of the sampling personnel. In addition, due to the use of electric drive, the time for each sampling process is greatly shortened, and the impact on the airtightness of the fermentation environment within the fermentation pit 300 is minimized. Furthermore, during the sampling process, the sampling depth can be determined by precisely controlling the length of the screw rod 110, achieving accurate sampling.

[0038] Preferably, such as Figure 2 , Figure 3As shown, the lead screw 110 has an external threaded groove 111 at its top and an internal threaded groove 113 at its bottom, with matching thread specifications. The sampling connector 121 at the top of the sampling tube 120 has a matching thread on its outer surface, allowing for quick connection to the bottom of the lead screw 110 by rotation. An annular sealing ring is embedded at the end of the sampling connector 121; when the thread is fully tightened, the sealing ring deforms under pressure to form an effective seal. An elastic element is provided at the bottom of the internal threaded groove 113 of the lead screw 110 to absorb minor gaps during assembly and ensure connection stability. The sampling connector 121 and the sampling tube 120 are fixed by welding, and a protective sleeve is installed in the welding area to prevent corrosion from the mash from affecting the structural strength. Furthermore, an annular anti-loosening groove is provided at the threaded connection between the external threaded groove 111 and the internal threaded groove 113 of the lead screw 110, with an elastic retaining ring embedded within the anti-loosening groove. This design effectively prevents loosening that may occur during long-term use, further improving the reliability and stability of the sampler.

[0039] Preferably, such as Figure 1 , Figure 6 As shown, a rectangular sampling window 140 is provided on the side of the sampling trolley 100, and the edge of the window is reinforced by a bending and flanging process. When the segmented lifting rod raises the sampling tube 120 to the preset height, the middle section of the sampling tube 120 is aligned with the center area of ​​the sampling window 140. At this time, the sampling point marked on the surface of the tube is flush with or higher than the lower edge of the sampling window 140, so that the operator can directly extract the sample without disconnecting the lifting rod.

[0040] Preferably, such as Figure 5 As shown, four symmetrically arranged wheels 150 are positioned at the bottom of the sampling trolley 100. Each wheel 150 has anti-slip textured surfaces to enhance friction with the support platform 200. A stainless steel axle runs through the center of each wheel 150, with a brake lock mounting base extending from the axle end. A manual rotary brake mechanism is vertically mounted on the base; when the knob is rotated, it presses against the axle to generate braking force. A stainless steel scale is embedded along the length of the upper surface of the support platform 200. The scale surface is laser-etched with equidistant markings, and a location code is marked below the markings. When the trolley moves to the target sampling position, the operator observes the alignment of the scale markings with the alignment marks on the side of the trolley to confirm the horizontal position, and then simultaneously tightens the brake locks of the wheels 150 to stop the trolley.

[0041] Preferably, such as Figure 4 , Figure 5As shown, the support platform 200 includes a rectangular support plate 220 and lifting columns 210 arranged in an array at the bottom. The support plate 220 is integrally stamped from high-strength alloy steel, with reinforcing ribs welded in a grid pattern on the lower surface of the plate. Circular or rectangular mounting seats are reserved at the intersections of the ribs to fix the lifting columns 210. The lifting columns 210 adopt a double-layer sleeve structure. The top of the outer sleeve has a manual locking knob, and the surface of the inner telescopic rod is machined with anti-slip straight lines. The top of the telescopic rod is bolted to the lower surface of the support plate 220 via a flange. An adjustable leveling base is also installed at the bottom of the lifting columns 210. The bottom surface of the base is covered with an anti-slip rubber pad, and four adjusting screws are symmetrically arranged on the side wall for fine-tuning the level. A sampling slot 230 is opened along the central axis on the upper surface of the support plate 220, penetrating the plate. The two sides of the slot are folded to form a trapezoidal guide surface. The width of the sampling slot 230 is slightly larger than the outer diameter of the lead screw 110 to retain movement clearance.

[0042] Preferably, such as Figure 7 , Figure 8 As shown, the segmented linear slide rail assembly 240 embedded inside the support plate 220 includes a fixed base section 242 and a sliding extension section 241. The fixed base section 242 is rigidly connected to the main body of the support plate 220 by bolts, and its cross-section is I-shaped. The track surfaces on both sides are hardened to improve wear resistance. The sliding extension section 241 adopts the same cross-sectional shape as the fixed base section 242, and its bottom is provided with a guide plate or guide slider to form a sliding fit with the track surface of the fixed base section 242. A trapezoidal locking tongue is machined at the end of the sliding extension section 241. When it slides along the length of the support plate 220 to the target position, the locking tongue automatically engages in the corresponding slot on the side wall of the support plate 220 to form a mechanical interlock. A spring-loaded wedge-shaped locking block is installed in the slot on the side wall of the support plate 220. When the sliding extension section 241 is in place, the locking block is squeezed and rebounds to engage with the locking tongue recess, completing the bidirectional limiting. Removable limiting baffles are installed on both ends of the support plate 220. A buffer pad is attached to the inner side of the baffle to limit the maximum stroke of the sliding extension section 241. After the slide rail is adjusted, the locking handle on the side of the support plate 220 drives the tightening bolts to ensure a tight fit between the extension section and the base section, eliminating gaps. An elastic sealing strip can be installed at the joint between the extension section and the support plate 220 to prevent mash particles from intruding into the slide rail and affecting sliding accuracy.

[0043] Preferably, the upper surfaces of the fixed base section 242 and the sliding extension section 241 are machined with continuous guide grooves 243 along the length direction. The two sides of the rim of the traveling wheel 150 are designed with raised guide ridges, with rounded edges to form a uniform clearance fit with the sidewall of the guide groove 243. When the sliding extension section 241 is adjusted along the length of the support plate 220, the guide grooves 243 on its surface align with the guide grooves 243 of the fixed base section 242, forming a continuous track without step differences. During the travel of the traveling wheel 150, the guide ridges are always embedded in the grooves, and a vertical floating gap is reserved between the wheel body and the bottom of the groove to ensure that the trolley will not deviate from the track and can adapt to small height differences. After the sliding extension section 241 is adjusted to the correct position, the positioning pin at its end is inserted into the corresponding hole in the fixed base section 242, keeping the centerline deviation at the junction of the two grooves within the allowable range. A limiting retaining ring is provided at the axis position of the traveling wheel 150 to limit the axial movement of the wheel body and prevent hard collisions between the guide ridges and the sidewalls of the grooves.

[0044] It should be noted that the above specific embodiments are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection scope. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A labor-saving sampler for pit mud and fermented mash, comprising: A support platform (200) spanning the pit (300) and a sampling trolley (100) movably mounted on the support platform (200), characterized in that, The sampling trolley (100) is equipped with a screw jack (130), and multiple sections of screw rods (110) are detachably connected in sequence to form a segmented lifting rod structure. The bottom end of the structure is connected to a sampling tube (120). The screw jack (130) meshes with the screw rods (110) to drive the sampling tube (120) to rise and fall. The sampling trolley (100) is configured to move along the support platform (200) to adjust the horizontal sampling position of the sampling tube (120), and to adjust the sampling depth of the sampling tube (120) by increasing or decreasing the number of sections of the lead screw (110).

2. The sampler according to claim 1, characterized in that, The screw jack (130) is fitted with a transmission nut, the internal thread (131) of which engages with the external thread (112) of the lead screw (110); the top of the sampling trolley (100) is provided with a through hole corresponding to the installation position of the screw jack (130) to allow the lead screw (110) and the sampling tube (120) to pass through.

3. The sampler according to claim 2, characterized in that, The lead screw (110) has an external threaded groove (111) formed at the top end and an internal threaded groove (113) that matches the external threaded groove (111) at the bottom end. The sampling tube (120) has a sampling connector (121) fixedly installed at the top end. The outer surface of the sampling connector (121) has a threaded structure. The sampling tube (120) and the lifting rod structure can be detachably connected by screwing into the internal threaded groove (113) at the bottom end of the lead screw (110).

4. The sampler according to claim 1, characterized in that, The sampling trolley (100) has a sampling window (140) on its side; When the segmented lifting rod structure completes sampling and rises to the set height, the sampling tube (120) moves to the operable area of ​​the sampling window (140).

5. The sampler according to claim 1, characterized in that, The sampling trolley (100) is equipped with multiple wheels (150) at its bottom, and each wheel (150) is equipped with an independent brake lock; When the sampling trolley (100) moves to the predetermined sampling position with a horizontal reference mark, each brake lock acts on the axle of the traveling wheel (150) to stop the sampling trolley (100).

6. The sampler according to claim 5, characterized in that, The support platform (200) includes a support plate (220) and a lifting column (210) installed at its bottom. The telescopic end of the lifting column (210) is connected to the lower surface of the support plate (220) to realize the overall height adjustment of the platform. The upper surface of the support plate (220) is provided with a long strip-shaped sampling groove (230) along the traveling direction of the sampling trolley (100), and the width of the sampling groove (230) is clearance-fitted with the diameter of the lead screw (110).

7. The sampler according to claim 6, characterized in that, The support plate (220) is internally fitted with a segmented linear slide rail assembly (240), the slide rail assembly (240) including a fixed base section (242) and a sliding extension section (241); The sliding extension section (241) can be linearly displaced in both directions along the length axis of the support plate (220). The effective length of the support plate (220) can be adjusted by the displacement distance of the sliding extension section (241). After the displacement is terminated, the end of the sliding extension section (241) forms a mechanical interlock with the side wall of the support plate (220).

8. The sampler according to claim 7, characterized in that, The upper surfaces of the fixed base section (242) and the sliding extension section (241) are provided with continuous guide grooves (243), and the extension direction of the guide grooves (243) is parallel to the length axis of the support plate (220). The two sides of the rim of the walking wheel (150) form a clearance fit with the cross-sectional profile of the guide groove (243), so that the walking wheel (150) always maintains its trajectory positioning along the path of the guide groove (243) before and after the displacement of the sliding extension section (241).

9. The sampler according to claim 2, characterized in that, The top and bottom ends of the transmission nut of the screw jack (130) extend to form an annular dust cover. The outer edge of the dust cover abuts against the housing of the screw jack (130), and its inner wall maintains a dynamic sealing gap with the external thread (112) on the outer surface of the lead screw (110).

10. The sampler according to claim 3, characterized in that, The threaded connection between the outer threaded groove (111) and the inner threaded groove (113) of the lead screw (110) is provided with an annular anti-loosening groove, and an elastic retaining ring is embedded in the anti-loosening groove.

Images