Sampling device for fruit pesticide residue detection

Abstract

The utility model discloses a sampling device for fruit pesticide residue detection, which comprises a support seat, the support seat is provided with a cutting mechanism, the cutting mechanism comprises a motor, a transmission assembly, a support frame, a rotating wheel, a connecting rod, a guide rod, a support rod, a guide sleeve, a mounting frame and a saw blade, the saw blade is arranged on the mounting frame and is provided with a quick fixing mechanism for connection, and the rotating wheel is arranged on the support seat. The quick fixing mechanism comprises a fixing rod, a fixing sleeve, screw sleeves, a screw rod, a clamping block, a clamping groove, a gear, a sliding sleeve, a rack and a limiting mechanism, the fixing rod is inserted into the mounting frame and the saw blade, the fixing sleeve is arranged at the top end of the fixing rod, the screw sleeves are rotationally mounted on the fixing sleeve, and the gear and the rack are meshed to drive the screw sleeves to rotate; the saw blade is rapidly fixed and detached through cooperation of the clamping block and the clamping groove, the problem that in the prior art, a cutter is tedious to replace is solved through cooperation of the cooperation of a limiting sleeve, a limiting plate and other components in the limiting mechanism, and the maintenance efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural product quality safety detection technical field more specifically, it relates to a sampling device for fruit pesticide residue detection. BACKGROUND

[0002] In the field of agricultural product quality safety detection, the detection of pesticide residues in fruits is an important link to ensure food safety. During the detection process, obtaining accurate fruit samples is crucial for the reliability of the detection results. However, most of the sampling devices on the market currently rely on manual cutting methods for sampling. This method not only requires operators to invest a lot of physical labor, but also due to the instability of manual operation, it can easily cause problems such as uneven sample size and cutting depth, affecting the accuracy of the detection results.

[0003] In actual detection work, due to the hardness and shape of different varieties of fruits, it is necessary to frequently replace cutting tools of different specifications and sharpness. However, the existing sampling devices generally adopt a design method of fixed connection between the cutting tool and the device body. This structure makes the replacement process of the cutting tool tedious and time-consuming. Especially when a large number of samples need to be continuously detected, frequent replacement of the cutting tool not only reduces the work efficiency, but also increases the labor burden of the operators. At the same time, the fixed connection also brings inconvenience to the daily maintenance and cleaning of the cutting tool, which may affect the hygiene requirements of sampling. SUMMARY

[0004] In view of the problems existing in the prior art, the utility model provides a sampling device for fruit pesticide residue detection to solve the technical problem of tedious and time-consuming replacement process of the cutting tool mentioned in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a sampling device for fruit pesticide residue detection, support seat is provided with cutting mechanism on, cutting mechanism includes motor, transmission assembly, support frame, runner, connecting rod, guide rod, support rod, guide sleeve, mounting bracket and saw blade, motor is installed on support seat, transmission assembly is connected in motor three rough protection short, support frame is fixed on support seat, carousel rotates in support seat and is connected with transmission assembly, connecting rod rotation is connected on runner, guide rod is installed on support frame, support rod connects guide rod top end, guide sleeve slides on guide rod, mounting bracket is connected on guide sleeve bottom and is rotationally connected with connecting rod, saw blade is set up on mounting bracket and is provided with quick solidification mechanism connection, quick solidification mechanism includes fixed rod, fixed sleeve, screw sleeve, screw rod, clamping block, clamping groove, gear, sliding sleeve, rack and limiting mechanism, fixed rod is inserted on mounting bracket and saw blade, fixed sleeve is set up on fixed rod top end, screw sleeve is provided with multiple rotation installation on fixed sleeve, screw rod is connected in multiple screw sleeve, clamping block is installed on multiple screw rod top end, clamping groove is provided with multiple distribution on fixed rod outer wall, gear is installed on multiple screw sleeve top end, sliding sleeve slides on fixed sleeve outer wall, rack is provided with multiple installation on sliding sleeve outside and is engaged with multiple gear.

[0006] The utility model further sets up, limiting mechanism includes limit sleeve, limit board, jacks, limit block, rotation sleeve, mounting sleeve, arc groove and give way slot, limit sleeve interacts on fixed sleeve outer wall, limit board is provided with multiple installation on limit sleeve bottom, jacks are provided with multiple installation on limit sleeve top, limit block is installed on multiple jacks top end, rotation sleeve rotation is installed on fixed sleeve top, mounting sleeve is installed on rotation sleeve bottom, arc groove is provided with multiple distribution on mounting sleeve, give way slot is set up in multiple arc groove one end. The cooperation of limit sleeve and limit board realizes the location of gear, and the movement of jacks and limit block in arc groove and give way slot ensures the reliability of limiting mechanism, and the design of rotation sleeve and mounting sleeve makes the whole limiting process controllable and stable.

[0007] The utility model further sets up, the fixed rod outer wall is equipped with the location strip, the location strip is provided with multiple groups, the fixed sleeve inner wall is seted up with the location slot, the location slot is provided with multiple groups and is connected with multiple the location strip sliding. The sliding cooperation of multiple location strips and location slots ensures the accurate positioning of fixed rod in fixed sleeve, prevents the rotation of fixed rod, and improves the stability of fixation.

[0008] The utility model further sets up, multiple the clamping groove outer wall all are seted up with the guide slot, multiple the clamping block and clamping groove all are provided with polygon, multiple the guide slot and clamping block can slide connection. The cooperation of polygon design clamping block and clamping groove prevents slipping, and the setting of guide slot ensures the accuracy of clamping block movement, and improves locking effect.

[0009] The utility model further sets up, the limit set top surface installation is equipped with push spring, push spring sets up multiple and top with installation set resistance interface. Multiple push spring provides elastic support force, ensure the close cooperation between limit set and installation set, has strengthened the limit effect.

[0010] The utility model further sets up, support seat top surface installation is equipped with tray. The setting of tray provides stable placement platform for fruit sample, and subsequent clamping and cutting operation are convenient.

[0011] The utility model further sets up, be provided with clamping mechanism on the tray, clamping mechanism includes base, transmission block, screw rod, clamping block and handle, base is fixed on the tray top surface, transmission block sets up two groups sliding on the base, screw rod rotation is installed on the base and is connected with two groups transmission block screw respectively, the both ends of screw rod are provided with two-way thread, clamping block is installed in multiple transmission block one side, handle is installed in screw rod one end. The design of two-way thread screw rod makes two groups transmission block synchronous movement, and the even clamping of fruit is realized to cooperation clamping block, and the setting of handle is convenient for operation adjustment.

[0012] The utility model further sets up, two groups clamping block inboard all installation is equipped with soft pad. The setting of soft pad increases the buffer effect of the contact surface with fruit, prevents the damage to fruit in the clamping process.

[0013] Compared with the prior art, the utility model provides a kind of sampling device for fruit pesticide residue detection, with the following beneficial effects:

[0014] 1, by setting cutting mechanism on support base, wherein motor is rotated by transmission assembly to drive runner, connecting rod is guided under the guidance of guide rod to drive mounting bracket to do reciprocating motion, realize the automatic cutting of saw blade, overcome the problem of time-consuming and laborious manual cutting in prior art, while the setting of support frame and support rod provides stable support, ensure the accuracy of cutting process.

[0015] 2, by setting quick fixing mechanism, including the cooperation of fixed rod, fixed sleeve and screw nut etc., especially by the meshing of gear and rack to drive screw nut rotation, the cooperation of clamping block and clamping groove is used to realize the quick fixing and disassembly of saw blade, and the synergistic effect of limiting sleeve, limiting plate and other components in limiting mechanism is further used, the problem of complicated tool replacement in prior art is solved, and maintenance efficiency is greatly improved.

[0016] 3, by setting clamping mechanism on tray, the combination of base, transmission block and two-way thread screw rod is used, the protective effect of soft pad is used, the stable clamping of fruit sample is realized, the fixity of sample position in sampling process is ensured, and the accuracy and efficiency of sampling are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1It is the whole structure schematic view of the sampling device for fruit pesticide residue detection in the utility model.

[0018] Figure 2 It is the structure schematic view of the cutting mechanism in the utility model.

[0019] Figure 3 It is the sectional structure schematic view of the fastening mechanism in the utility model.

[0020] Figure 4 It is the sectional structure schematic view of the limiting mechanism in the utility model.

[0021] Figure 5 It is the structure schematic view of the clamping mechanism in the utility model.

[0022] In the drawing: 1, support seat; 2, motor; 3, transmission assembly; 4, support frame; 5, runner; 6, connecting rod; 7, guide rod; 8, support rod; 9, guide sleeve; 10, mounting frame; 11, saw blade; 12, fixed rod; 13, fixed sleeve; 14, screw sleeve; 15, screw rod; 16, clamping block; 17, clamping groove; 18, gear; 19, sliding sleeve; 20, rack; 21, limiting sleeve; 22, limiting plate; 23, jacking rod; 24, limiting block; 25, rotating sleeve; 26, mounting sleeve; 27, arc-shaped groove; 28, accommodation groove; 29, positioning strip; 30, positioning groove; 31, guide groove; 32, push spring; 33, tray; 34, base; 35, transmission block; 36, screw rod; 37, clamping block; 38, handle; 39, soft pad. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0025] In the utility model, unless otherwise specified, the orientation such as "up, down" is generally for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally for the left and right shown in the drawing; "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0026] Please refer to Figures 1-5The utility model provides a kind of sampling device for fruit pesticide residue detection, including support seat 1, cutting mechanism is provided on support seat 1, cutting mechanism includes motor 2, transmission assembly 3, support frame 4, rotating wheel 5, connecting rod 6, guide rod 7, support rod 8, guide sleeve 9, mounting bracket 10 and saw blade 11, motor 2 is installed on support seat 1, transmission assembly 3 is connected in motor 2 three rough short, support frame 4 is fixed on support seat 1, rotating disc rotates in support seat 1 and is connected with transmission assembly 3, connecting rod 6 is rotatably connected in rotating wheel 5, guide rod 7 is installed on support frame 4, support rod 8 is connected guide rod 7 top, guide sleeve 9 slides on guide rod 7, mounting bracket 10 is connected in guide sleeve 9 bottom and rotatably connected with connecting rod 6, saw blade 11 is set on mounting bracket 10 and is provided with quick solid mechanism connection, quick solid mechanism includes fixed rod 12, fixed sleeve 13, screw sleeve 14, screw rod 15, clamping block 16, clamping groove 17, gear 18, sliding sleeve 19, rack 20 and limiting mechanism, fixed rod 12 is inserted in mounting bracket 10 with saw blade 11, fixed sleeve 13 is set in fixed rod 12 top, screw sleeve 14 is set with multiple rotatable installation in fixed sleeve 13, screw rod 15 is connected in multiple screw sleeve 14, clamping block 16 is installed in multiple screw rod 15 top, clamping groove 17 is set with multiple distribution in the outer wall of fixed rod 12, gear 18 is installed in multiple screw sleeve 14 top, sliding sleeve 19 slides on the outer wall of fixed sleeve 13, rack 20 is set with multiple installation in the outer side of sliding sleeve 19 and is engaged with multiple gear 18.

[0027] Limiting mechanism includes limiting sleeve 21, limiting plate 22, top rod 23, limiting block 24, rotating sleeve 25, mounting sleeve 26, arc slot 27 and give way slot 28, limiting sleeve 21 is interacted in the outer wall of fixed sleeve 13, limiting plate 22 is set with multiple installation in the bottom of limiting sleeve 21, top rod 23 is set with multiple installation in the top of limiting sleeve 21, limiting block 24 is installed in multiple top rod 23 top, rotating sleeve 25 is rotatably installed in the top of fixed sleeve 13, mounting sleeve 26 is installed in the bottom of rotating sleeve 25, arc slot 27 is set with multiple distribution on mounting sleeve 26, give way slot 28 is set in one end of multiple arc slot 27.Principle is by rotating of rotating sleeve 25 to drive mounting sleeve 26 to move, limiting block 24 is switched in arc slot 27 and give way slot 28, to realize the locking and removal of limiting sleeve 21 and limiting plate 22 to gear.

[0028] Fixed rod 12 outer wall is equipped with positioning strip 29, positioning strip 29 is set with multiple, fixed sleeve 13 inner wall is set with positioning slot 30, and positioning slot 30 is set with multiple and is slidably connected with multiple positioning strip 29.Principle is to use the sliding fit of positioning strip 29 and positioning slot 30, ensure the accurate positioning and anti-rotation of fixed rod 12 in fixed sleeve 13.

[0029] The outer wall of each group of clamping slots 17 is provided with a guide slot 31, and each group of clamping blocks 16 and clamping slots 17 are polygonal, and each group of guide slots 31 and clamping blocks 16 are slidably connected. The principle is that the polygonal clamping block 16 is accurately matched with the clamping slot 17 under the guidance of the guide slot 31, so as to realize reliable locking function.

[0030] The top surface of the limiting sleeve 21 is provided with a push spring 32, and the push spring 32 is provided with a plurality of groups and abuts against the mounting sleeve 26 at the top end. The principle is to use the elastic force of the push spring 32 to keep the close contact between the limiting sleeve 21 and the mounting sleeve 26, and to ensure the limiting effect.

[0031] The top surface of the supporting seat 1 is provided with a tray 33. The principle is that the tray 33 provides a stable working platform for the entire clamping system.

[0032] In the embodiment, the fruit sample is fixed by the clamping mechanism, the motor 2 is controlled to start, the transmission assembly 3 drives the rotating wheel 5 to rotate, the rotating wheel 5 drives the connecting rod 6 to make reciprocating motion, the connecting rod 6 drives the mounting frame 10 to slide up and down on the guide rod 7, the guide sleeve 9 moves stably on the guide rod 7, the accuracy of cutting is ensured, the support rod 8 and the support frame 4 provide stable support for the whole cutting system, the saw blade 11 moves up and down with the mounting frame 10 to cut and sample the fruit sample, when the saw blade 11 needs to be replaced, the rotating sleeve 25 drives a plurality of displacement holes to move to the top end of the limiting block 24, pushes the limiting sleeve 21 to push a plurality of jacks 23 to be inserted in the displacement holes with the limiting block 24, at the same time, the limiting sleeve 21 drives a plurality of limiting plates 22 to release the limiting of a plurality of gears 18, and then the rotating sleeve 25 is rotated again to make a plurality of jacks 23 move into the arc-shaped grooves 27, at the same time, the limiting sleeve 21 and the mounting plate extrude the push spring 32, a plurality of limiting blocks 24 bottom surfaces abut against the mounting plate top surface to fix the limiting sleeve 21, and then the sliding sleeve 19 drives a plurality of gear racks 20 to engage with the gears 18 to drive a plurality of gears 18 and the screw sleeves 14 to rotate, a plurality of screw sleeves 14 are threadedly connected with the screw rods 15, a plurality of screw rods 15 and the screw sleeves 14 are threadedly connected to drive the clamping blocks 16 to move outwardly out of the clamping grooves 17 and into the guide grooves 31, and then the fixing rod 12 can be pulled out of the fixing sleeve 13 and the mounting frame 10, and then the saw blade 11 can be disassembled, and then when the replaced saw blade 11 is installed, the saw blade 11 is inserted into the mounting frame 10, the fixing rod 12 is inserted into the mounting frame 10 and the saw blade 11, the fixing sleeve 13 is inserted into the fixing rod 12, the positioning strips 29 arranged on the outer wall of the fixing rod 12 and the positioning grooves 30 arranged in the fixing sleeve 13 are slidably connected and positioned, a plurality of guide grooves 31 and the clamping blocks 16 are slidably connected, when the fixing rod 12 is inserted into the fixing sleeve 13 top surface, the sliding sleeve 19 drives a plurality of gear racks 20 to rotate a plurality of gears 18, the gears 18 drive the screw sleeves 14 to rotate, the screw sleeves 14 are threadedly connected with the screw rods 15, so that the clamping blocks 16 are clamped in the clamping grooves 17 to clamp the fixing rod 12, and then the rotating sleeve makes the jacks 23 move into the displacement grooves 28, the push spring 32 pushes the limiting sleeve 21 to slide and pushes a plurality of baffle plates to be clamped between the teeth of a plurality of gears 18, the rotating sleeve 25 is rotated again to make a plurality of limiting blocks 24 top surfaces abut against the mounting sleeve 26 bottom surface to limit and fix a plurality of gears 18.

[0033] Please refer to Figure 5As an embodiment of the clamping mechanism: the tray 33 is provided with a clamping mechanism, the clamping mechanism includes a base 34, a transmission block 35, a lead screw 36, a clamping block 37 and a knob 38, the base 34 is fixed on the top surface of the tray 33, the transmission block 35 is provided with two groups of sliding on the base 34, the lead screw 36 is rotatably installed on the base 34 and is respectively threadedly connected with the two groups of transmission blocks 35, the lead screw 36 is provided with a bidirectional thread at both ends, the clamping block 37 is installed on one side of the plurality of transmission blocks 35, and the knob 38 is installed on one end of the lead screw 36. The principle is that the knob 38 is rotated to drive the lead screw 36 to rotate, the bidirectional thread is used to make the two groups of transmission blocks 35 move synchronously and oppositely, and the clamping block 37 is driven to clamp the sample.

[0034] The inner side of the two groups of clamping blocks 37 is provided with a soft pad 39. The principle is that the soft pad 39 provides buffer protection to prevent damage to the sample during clamping.

[0035] More specifically, the fruit sample is placed between the two groups of clamping blocks 37, the knob is rotated to drive the lead screw 36 to rotate, the bidirectional thread provided at both ends of the lead screw 36 is threadedly matched with the two groups of transmission blocks 35, so that the two groups of transmission blocks 35 move inward at the same time, thereby driving the two groups of clamping blocks 37 to clamp the fruit sample, the soft pad 39 contacts the fruit to provide buffer protection, and the two clamping blocks 37 move synchronously to ensure the uniformity of the clamping force.

[0036] In summary, the overall device in use or operation: through the clamping mechanism for fruit samples fixed, control motor 2 start, through the transmission assembly 3 drive runner 5 rotation, runner 5 rotation drive connecting rod 6 reciprocating motion, connecting rod 6 drive mounting bracket 10 on the guide rod 7 up and down sliding, guide sleeve 9 on the guide rod 7 stable movement, to ensure the accuracy of cutting, support rod 8 and support frame 4 for the whole cutting system provides stable support, saw blade 11 with mounting bracket 10 up and down movement, cutting fruit samples, when you need to replace the saw blade 11, rotating rotating sleeve 25 drive a plurality of let hole to the limit block 24 top, push limit sleeve 21 push a plurality of top rod 23 and limit block 24 inserted in the let hole, while the limit sleeve 21 drive a plurality of limit plate 22 remove the limit of a plurality of gear 18, and then rotate the rotating sleeve 25 so that a plurality of top rod 23 moves to the arc slot 27, while the limit sleeve 21 and the mounting plate to push spring 32 extrusion, through a plurality of limit block 24 bottom surface and the mounting plate top surface abutment, fixed limit sleeve 21, then slide sleeve 19 drive a plurality of gear rack 20 and gear 18 into engagement transmission, drive a plurality of gear 18 and screw sleeve 14 rotation, a plurality of screw sleeve 14 and screw 15 thread cooperation, through a plurality of screw 15 and screw sleeve 14 thread cooperation drive the block 16 outwardly moving away from the card slot 17 and move to the guide slot 31, then you can pull out the fixed rod 12 fixed sleeve 13 and mounting bracket 10, then you can disassemble the saw blade 11, then the replacement saw blade 11 installation, the saw blade 11 two insert in the mounting bracket 10, then the fixed rod 12 insert in the mounting bracket 10 and saw blade 11, and then the fixed sleeve 13 and fixed rod 12 are inserted, through the fixed rod 12 outer wall set positioning strip 29 and fixed sleeve 13 set in the positioning groove 30 sliding connection positioning insert, while a plurality of guide slot 31 and the block 16 sliding connection, when the fixed rod 12 insert in the fixed sleeve 13 top surface, slide sleeve 19 through a plurality of gear rack 20 drive a plurality of gear 18 rotation, gear 18 drive screw sleeve 14 rotation, screw sleeve 14 and screw 15 thread cooperation, so as to push the block 16 clamping in the card slot 17, the fixed rod 12 is clamped, and then rotate the sleeve so that the top rod 23 moves to the let slot 28, through the push spring 32 push limit sleeve 21 slide and push a plurality of baffle clamping between a plurality of gear 18 outer wall gear, rotate the rotating sleeve 25 again so that a plurality of limit block 24 top surface and mounting sleeve 26 bottom surface abutment, complete a plurality of gear 18 limit fixed.

[0037] The fruit sample is placed between the two sets of clamping blocks 37, the rotating rotating belt drives the screw rod 36 to rotate, and the two-way screw threads arranged at both ends of the screw rod 36 are in threaded cooperation with the two sets of transmission blocks 35, so that the two sets of transmission blocks 35 are simultaneously moved inward, thereby driving the two sets of clamping blocks 37 to clamp the fruit sample, the soft pad 39 is in contact with the fruit, and buffering protection is provided, and the two clamping blocks 37 are synchronously moved, so that the uniformity of the clamping force is ensured.

[0038] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which will not be described one by one here. In the above, whenever fixed connection is involved, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A sampling device for detecting pesticide residues in fruits, comprising a support seat (1), characterized in that: The support seat (1) is provided with a cutting mechanism, the cutting mechanism comprises a motor (2), a transmission assembly (3), a support frame (4), a rotating wheel (5), a connecting rod (6), a guide rod (7), a support rod (8), a guide sleeve (9), a mounting frame (10) and a saw blade (11), the motor (2) is installed on the support seat (1), the transmission assembly (3) is connected to the motor (2), the support frame (4) is fixed on the support seat (1), the rotating disc is rotatably arranged on the support seat (1) and connected with the transmission assembly (3), the connecting rod (6) is rotatably connected to the rotating wheel (5), the guide rod (7) is installed on the support frame (4), the support rod (8) is connected to the top end of the guide rod (7), the guide sleeve (9) is slidably arranged on the guide rod (7), the mounting frame (10) is connected to the bottom surface of the guide sleeve (9) and rotatably connected with the connecting rod (6), and the saw blade (11) is arranged on the mounting frame (10) and connected with a quick fixing mechanism, the quick fixing mechanism comprises a fixing rod (12), a fixing sleeve (13), a plurality of screw sleeves (14), a screw rod (15), a clamping block (16), a clamping groove (17), a gear (18), a sliding sleeve (19), a rack (20) and a limiting mechanism, the fixing rod (12) is inserted into the mounting frame (10) and the saw blade (11), the fixing sleeve (13) is arranged at the top end of the fixing rod (12), the plurality of screw sleeves (14) are rotatably arranged on the fixing sleeve (13), the screw rod (15) is connected into the plurality of screw sleeves (14), the clamping block (16) is installed at the top end of the plurality of screw rods (15), the clamping groove (17) is arranged on the outer wall of the fixing rod (12), the gear (18) is installed at the top end of the plurality of screw sleeves (14), the sliding sleeve (19) is slidably arranged on the outer wall of the fixing sleeve (13), and the rack (20) is arranged on the outer side of the sliding sleeve (19) and engaged with the plurality of gears (18); The limiting mechanism comprises a limiting sleeve (21), a limiting plate (22), a jacking rod (23), a limiting block (24), a rotating sleeve (25), a mounting sleeve (26), an arc-shaped groove (27) and a giving-way groove (28), the limiting sleeve (21) is interactively arranged on the outer wall of the fixing sleeve (13), the limiting plate (22) is arranged on the bottom surface of the limiting sleeve (21), the jacking rod (23) is arranged on the top surface of the limiting sleeve (21), the limiting block (24) is installed at the top end of the plurality of jacking rods (23), the rotating sleeve (25) is rotatably installed on the top surface of the fixing sleeve (13), the mounting sleeve (26) is installed on the bottom surface of the rotating sleeve (25), the arc-shaped groove (27) is arranged on the mounting sleeve (26), and the giving-way groove (28) is arranged at one end of the plurality of arc-shaped grooves (27); A push spring (32) is arranged on the top surface of the limiting sleeve (21), and the plurality of push springs (32) are in abutment with the mounting sleeve (26). The support seat (1) top surface is provided with a tray (33), the tray (33) is provided with a clamping mechanism, the clamping mechanism includes a base (34), a transmission block (35), a lead screw (36), a clamping block (37) and a handle (38), the base (34) is fixed on the tray (33) top surface, the transmission block (35) is provided with two groups of sliding on the base (34), the lead screw (36) is rotatably installed on the base (34) and is respectively connected with two groups of transmission blocks (35) in screw thread, the lead screw (36) both ends are provided with two-way thread, the clamping block (37) is installed on one side of a plurality of transmission blocks (35), the handle (38) is installed on one end of the lead screw (36).

2. The sampling device for detecting pesticide residues in fruits according to claim 1, characterized in that: The fixed rod (12) outer wall is provided with a positioning strip (29), the positioning strip (29) is provided with a plurality of groups, the fixed sleeve (13) inner wall is provided with a positioning groove (30), the positioning groove (30) is provided with a plurality of groups and is connected with a plurality of the positioning strip (29) in sliding.

3. The sampling device for detecting pesticide residues in fruits according to claim 2, characterized in that: multiple sets of... The outer wall of the clamping groove (17) is provided with a guide groove (31), a plurality of the clamping block (16) and the clamping groove (17) are provided with a polygon, a plurality of the guide groove (31) and the clamping block (16) are slidably connected.

4. The sampling device for detecting pesticide residues in fruits according to claim 3, characterized in that: Two groups of the clamping block (37) inner side are provided with a soft pad (39).

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