Auxiliary wrench for grain sampler

Abstract

The utility model relates to an auxiliary wrench for grain sampler, which comprises a base frame, a guide rod and a wrench, one end of the wrench is fixedly provided with a first clamping jaw and slidably connected with a second clamping jaw, the wrench is further provided with a linear driving part, the driving end of the linear driving part is in transmission connection with one side, deviating from the first clamping jaw, of the second clamping jaw, and the driving end of the linear driving part is in transmission connection with the second clamping jaw. The upper end of the guide rod is provided with an upper proximity switch located over the other end of the wrench, the upper side of the base frame is provided with a lower proximity switch located under the other end of the wrench, the base frame is further provided with an elastic assembly, and the elastic assembly is vertically connected to the other end of the wrench. The upper proximity switch and the lower proximity switch are both in communication connection with the linear driving piece. According to the utility model, the technical problems of high difficulty and low efficiency of the existing sampling tube descending mode can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain silo sampling equipment, in particular to an auxiliary wrench for a grain sampler. Background Art

[0002] Grain sampling is performed using grain samplers when inspecting grain quality, checking grain condition, measuring grain loading height, and laying temperature measurement cables in granaries. However, the sampling process involves numerous locations, numerous samples, and a heavy workload, resulting in a long and time-consuming process.

[0003] Usually, during the sampling process, workers manually lower the sampling tube into the deep layer of the grain pile. The greater the sampling depth, the greater the resistance, the more difficult the sampling, and the lower the sampling efficiency. Utility Model Content

[0004] The utility model aims to solve the technical problems of great difficulty and low efficiency in the existing method of inserting a sampling tube, and provides an auxiliary wrench for a grain sampler.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The cam is secured to the bottom of the guide rail and is adapted to engage the guide rail when the handle is engaged, and the cam is secured to the bottom of the guide rail when the handle is engaged.

[0007] The beneficial effect of the present invention is that the staff is in a standing posture and steps on the other end of the wrench, so that the wrench and the clamped sampling tube move downward at the same time, the elastic component is compressed, and the wrench moves downward and approaches the lower proximity switch. The lower proximity switch drives the driving end of the linear drive part to be retracted, so that the No. 2 clamping jaw moves in the direction away from the No. 1 clamping jaw, and the No. 1 clamping jaw and the No. 2 clamping jaw loosen the sampling tube. Then, the other end of the wrench is no longer stepped on. The wrench moves upward under the rebound action of the elastic component and reaches the upper proximity switch, and the sampling tube is clamped again, so as to cyclically lower the sampling tube to the deep layer of grain to achieve deep sampling. Through this sampling method, the staff only needs to step on the wrench, so as to improve the technical problems of the existing method of lowering the sampling tube, which is difficult and inefficient.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the elastic component includes a pressure plate vertically slidably connected to the base frame, at least one downward pressure rod and at least one spring, the lower end of each downward pressure rod is fixedly connected to the upper side of the pressure plate, and the upper end is connected to the other end of the wrench, the lower end of each spring is fixedly connected to the base frame, and the upper end is fixedly connected to the lower side of the pressure plate.

[0010] The beneficial effect of adopting the above-mentioned further scheme is: when the wrench moves downward and approaches the lower proximity switch, the spring wrench applies downward pressure to the pressure plate through the lower pressure rod, so that each spring is compressed; when the other end of the wrench is no longer stepped on, each spring retracts and applies upward force to the lower pressure rod through the pressure plate, so that the lower pressure rod drives the wrench to move upward relative to the sampling tube.

[0011] Furthermore, the elastic component also includes a connecting plate and a connecting bolt, the connecting plate is fixedly connected to the upper end of each of the lower pressure rods, and the connecting bolt is simultaneously connected to the other end of the wrench and the connecting plate.

[0012] The beneficial effect of adopting the above further solution is that the other end of the wrench can be connected to the connecting plate through the connecting bolt. When transportation is required, the connecting bolt can be removed, which is convenient for use.

[0013] Furthermore, the base frame is provided with two clamping grooves in a vertical direction, the two clamping grooves are provided facing each other, and the two ends of the pressing plate are respectively adapted to and vertically slidably connected to the two clamping grooves.

[0014] The beneficial effect of adopting the above further solution is that during the vertical movement of the pressure plate, the vertical movement of the pressure plate is guided and limited by the two clamping grooves, thereby preventing the pressure plate from bending the spring below due to uneven force.

[0015] Furthermore, the base frame includes a base plate and two vertical support plates that are spaced apart, the lower ends of the two support plates are fixedly connected to the upper side of the base plate, and the elastic component is installed on the base plate and between the two support plates.

[0016] The beneficial effect of adopting the above further solution is: the base plate is placed on the surface of the grain, and the large surface area of ​​the base plate forms a force base to ensure smooth deformation of the elastic component.

[0017] Furthermore, the base frame further includes two slot plates, and the two slot plates are slidably connected to the two ends of the base plate respectively.

[0018] The beneficial effect of adopting the above further solution is that during use, the contact area between the base frame and the surface of the grain can be expanded and the force stability can be increased by sliding the two groove plates back to back relative to the base plate.

[0019] Furthermore, a guide groove is vertically provided on one side of the guide rod, and the wrench is connected to a guide block, which is adapted to and vertically slidably connected to the guide groove.

[0020] The beneficial effect of adopting the above further solution is that the vertical sliding of the wrench is limited by the guide block being connected to the guide groove in a vertical sliding manner.

[0021] Furthermore, a card slot is provided on one side of the wrench, the length direction of the card slot extends along the arrangement direction of the No. 1 clamping jaw and the No. 2 clamping jaw, and the card slot is adapted and slidably connected to a card block, which is fixedly connected to the No. 2 clamping jaw.

[0022] The beneficial effect of adopting the above further solution is that when the second clamping jaw is driven to slide by the linear drive member, the clamping block is slidably connected in the clamping slot.

[0023] Furthermore, the No. 1 clamping jaw and the No. 2 clamping jaw are both covered with a flexible layer.

[0024] The beneficial effect of adopting the above further solution is that when the sampling tube is clamped by the No. 1 clamping jaw and the No. 2 clamping jaw, the two flexible layers contact the sampling tube, and a protective operation can be formed by the flexible layers to reduce the chance of damage to the sampling tube.

[0025] Furthermore, a storage plate is fixed to one end of the wrench, and the linear drive component is installed on the storage plate.

[0026] The beneficial effect of adopting the above further solution is that the linear drive component is installed through the storage plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is the overall structure diagram of the auxiliary wrench of the grain sampler of the present utility model;

[0028] Figure 2 for Figure 1 A partial enlarged view of

[0029] Figure 3 This is a partial structural diagram of the auxiliary wrench of the grain sampler of the present utility model;

[0030] Figure 4 for Figure 3 A partial enlarged view of .

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1. Sample tube;

[0033] 2. Base frame; 21. Base plate; 22. Support plate; 221. Clamping groove; 23. Slot plate;

[0034] 3. Guide rod; 31. Guide groove; 32. Guide block; 33. Guide bolt; 34. Fixed seat;

[0035] 4. Wrench; 41. Clamping rod; 411. Slot; 412. Block; 413. Storage plate; 42. Slant rod; 43. Load-bearing rod;

[0036] 5. No. 1 clamping jaw;

[0037] 6. No. 2 clamping jaw; 61. Flexible layer;

[0038] 7. Linear drive element; 71. Upper proximity switch; 72. Lower proximity switch;

[0039] 8. Elastic component; 81. Pressure plate; 82. Lower pressure rod; 83. Spring; 84. Connecting plate; 85. Connecting bolt. DETAILED DESCRIPTION

[0040] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0041] Example 1

[0042] like Figure 1 and Figure 2The cam 2 is connected to the guide rod 3 at the bottom and the cam 3 is connected to the guide rod 3 at the bottom.

[0043] The beneficial effect of this embodiment is that the staff is in a standing posture and steps on the other end of the wrench 4, so that the wrench 4 and the clamped sampling tube 1 move downward at the same time, and the elastic component 8 is compressed until the wrench 4 moves downward and approaches the lower proximity switch 72. The lower proximity switch 72 drives the driving end of the linear drive part 7 to be retracted, so that the No. 2 clamp 6 moves in the direction away from the No. 1 clamp 5. The No. 1 clamp 5 and the No. 2 clamp 6 loosen the sampling tube 1, and then no longer steps on the other end of the wrench 4. The wrench 4 moves upward under the rebound action of the elastic component 8 and reaches the upper proximity switch 71, and clamps the sampling tube 1 again, so as to cyclically lower the sampling tube 1 into the deep layer of grain to achieve deep sampling. Through this sampling method, the staff only needs to step on the wrench 4, so as to improve the technical problems of the existing method of lowering the sampling tube 1, which is difficult and inefficient.

[0044] When in use, place the base frame 2 on the surface of the grain to be tested, then connect the middle end of the wrench 4 to the guide rod 3, and the other end to the elastic component 8, and place the sampling tube 1 in the clamping space formed by the No. 1 clamp 5 and the No. 2 clamp 6, adjust the height of the wrench 4 so that the wrench 4 moves upward toward the upper proximity switch 71, until the wrench 4 approaches the upper proximity switch 71, the upper proximity switch 71 drives the driving end of the linear drive part 7 to extend, so that the No. 2 clamp 6 moves toward the No. 1 clamp 5, the No. 1 clamp 5 and the No. 2 clamp 6 clamp the sampling tube 1, and then the grain sampling work can be carried out.

[0045] By sliding the No. 2 clamping jaw 6 , the clamping space formed between the No. 1 clamping jaw 5 and the No. 2 clamping jaw 6 can be changed, so as to facilitate the clamping of the sampling tubes 1 with different diameters.

[0046] The first clamping jaw 5 and the second clamping jaw 6 are both located on one side of the wrench 4 .

[0047] The upper proximity switch 71 and the lower proximity switch 72 are both communicatively connected to the linear drive member 7. Specifically, the upper proximity switch 71 is used to control the extension of the driving end of the linear drive member 7 based on a first preset distance a between the upper proximity switch 71 and the other end of the wrench 4, and the lower proximity switch 72 is used to control the retraction of the driving end of the linear drive member 7 based on a second preset distance b between the upper proximity switch 71 and the other end of the wrench 4. The first preset distance a and the second preset distance b can both be set to any distance value within a range of 0.1-50 mm, such as 0.15 mm, 0.3 mm, 0.6 mm, etc.

[0048] As a specific embodiment of the above embodiment, the wrench 4 includes a clamping rod 41, an inclined rod 42, and a force-bearing rod 43. The clamping rod 41 is arranged horizontally and serves as one end of the wrench 4. The first clamping jaw 5 is fixedly connected to the clamping rod 41, and the second clamping jaw 6 is slidably connected to the clamping rod 41.

[0049] The inclined rod 42 is arranged at an angle, with its lower end fixedly connected to one side of the clamping rod 41. The force-bearing rod 43 is arranged horizontally, with one end of the force-bearing rod 43 fixedly connected to the upper end of the inclined rod 42. The force-bearing rod 43, serving as the other end of the wrench 4, is vertically slidably connected to the guide rod 3 and is also connected to the elastic component 8.

[0050] By connecting the inclined rod 42, the force-bearing rod 43 is located at a higher level relative to the clamping rod 41, which can form an installation space that is more convenient for installing the base frame 2 and the elastic component 8. In addition, the inclined rod 42 is tilted downward relative to the force-bearing rod 43. When the force-bearing rod 43 is stressed, the clamping rod 41 clamps the sampling tube 1 and moves downward more smoothly.

[0051] On the basis of the above embodiments, both the No. 1 clamping jaw 5 and the No. 2 clamping jaw 6 can be made of round rods or polygonal rods.

[0052] The linear drive member 7 can adopt a linear drive mechanism composed of a pneumatic cylinder, an electric cylinder, a gear rack, etc., and can be connected to the upper proximity switch 71 and the lower proximity switch 72 by line or signal connection to control the linear drive member 7 through the upper proximity switch 71 and the lower proximity switch 72.

[0053] Example 2

[0054] like Figures 1 to 4 On the basis of Example 1, the elastic component 8 includes a pressure plate 81 vertically slidably connected to the base frame 2, at least one lower pressure rod 82 and at least one spring 83. The lower end of each lower pressure rod 82 is fixedly connected to the upper side of the pressure plate 81, and the upper end is connected to the other end of the wrench 4. The lower end of each spring 83 is fixedly connected to the base frame 2, and the upper end is fixedly connected to the lower side of the pressure plate 81.

[0055] The beneficial effect of adopting the preferred scheme in the above embodiment is that when the wrench 4 moves downward and approaches the lower proximity switch 72, the wrench 4 of the spring 83 applies downward pressure to the pressure plate 81 through the lower pressure rod 82, so that each spring 83 is compressed; when the other end of the wrench 4 is no longer stepped on, each spring 83 retracts and applies upward force to the lower pressure rod 82 through the pressure plate 81, so that the lower pressure rod 82 drives the wrench 4 to move upward relative to the sampling tube 1.

[0056] As a specific solution of the above embodiment, the pressing rods 82 can be one, two, three or four, and the springs 83 can be one, two, three or four, etc. In the figure, only two pressing rods 82 and two springs 83 are shown.

[0057] Example 3

[0058] like Figure 3 and Figure 4 On the basis of Examples 1 and 2, the elastic component 8 further includes a connecting plate 84 and a connecting bolt 85. The connecting plate 84 is fixedly connected to the upper end of each lower pressure rod 82, and the connecting bolt 85 is simultaneously connected to the other end of the wrench 4 and the connecting plate 84.

[0059] The beneficial effect of adopting the preferred solution in the above embodiment is that the other end of the wrench 4 is connected to the connecting plate 84 through the connecting bolt 85. When transportation is required, the connecting bolt 85 can be removed, which is convenient to use.

[0060] On the basis of the above embodiment, a countersunk hole is provided on the upper side of the force-bearing rod 43 of the wrench 4 for the head of the connecting bolt 85 to enter.

[0061] Example 4

[0062] like Figure 1 and Figure 3 On the basis of embodiments 1-3, the base frame 2 has two clamping grooves 221 vertically opened, the two clamping grooves 221 are opened facing each other, and the two ends of the pressure plate 81 are respectively adapted and vertically slidably connected to the two clamping grooves 221.

[0063] The beneficial effect of adopting the preferred solution in the above embodiment is that during the vertical movement of the pressure plate 81, the vertical movement of the pressure plate 81 is guided and limited by the two clamping grooves 221, preventing the pressure plate 81 from bending the spring 83 below due to uneven force.

[0064] The two clamping grooves 221 are both U-shaped grooves.

[0065] Example 5

[0066] like Figure 1 and Figure 3Based on Examples 1-4, the base frame 2 includes a base plate 21 and two vertical support plates 22 arranged at intervals. The lower ends of the two support plates 22 are fixedly connected to the upper side of the base plate 21, and the elastic component 8 is installed on the base plate 21 and between the two support plates 22.

[0067] The beneficial effect of adopting the preferred solution in the above embodiment is that the base plate 21 is placed on the surface of the grain, and the large surface area of ​​the base plate 21 forms a force base to ensure smooth deformation of the elastic component 8.

[0068] Based on the above embodiment, the lower end of the guide rod 3 is fixedly connected to the upper end of the base plate 21 or one of the support plates 22. A clamping groove 221 is formed on the facing sides of the two support plates 22 to achieve vertical sliding connection with the pressure plate 81. A spring 83 is installed between the two support plates 22.

[0069] Example 6

[0070] like Figure 1 and Figure 3 On the basis of embodiments 1-5, the base frame 2 further includes two slot plates 23 , and the two slot plates 23 are slidably connected to the two ends of the base plate 21 respectively.

[0071] The beneficial effect of adopting the preferred solution in the above embodiment is that during use, the contact area between the base frame 2 and the surface of the grain can be expanded by sliding the two groove plates 23 relative to the base plate 21, thereby increasing the force stability.

[0072] The upper side of the slot plate 23 is provided with a stepped groove, the base plate 21 is slidably connected in the stepped groove, and the upper side of the base plate 21 abuts against the groove shoulder of the stepped groove to prevent the base plate 21 from detaching upward from the slot plate 23 .

[0073] The stepped grooves extend transversely through the slot plate 23 to facilitate the removal of the substrate 21 from the slot plate 23 .

[0074] Example 7

[0075] like Figure 3 and Figure 4 On the basis of embodiments 1-6, a guide groove 31 is vertically opened on one side of the guide rod 3, and the wrench 4 is connected to a guide block 32, which is adapted and vertically slidably connected to the guide groove 31.

[0076] The beneficial effect of adopting the preferred solution in the above embodiment is that the vertical sliding of the wrench 4 is limited by the guide block 32 being vertically slidably connected to the guide groove 31 .

[0077] Based on the above embodiment, the guide groove 31 can be a stepped groove or a dovetail groove to prevent the guide block 32 vertically slidably connected to the guide groove 31 from being separated from the guide groove 31. The guide groove 31 is vertically penetrated and opened at the upper end of the guide rod 3 to facilitate the upward removal of the guide block 32.

[0078] The wrench 4 and the guide block 32 are also connected with a guide bolt 33 , so that the guide block 32 can be detachably connected through the guide bolt 33 .

[0079] On the basis of the above embodiment, the upper end of the guide rod 3 is detachably connected to the fixing base 34 by bolts, and the upper proximity switch is mounted on the fixing base 34 .

[0080] Example 8

[0081] like Figure 1 and Figure 2 On the basis of Examples 1-7, a card slot 411 is provided on one side of the wrench 4, the length direction of the card slot 411 extends along the arrangement direction of the No. 1 clamping jaw 5 and the No. 2 clamping jaw 6, and the card slot 411 is adapted and slidably connected with a card block 412, and the card block 412 is fixedly connected to the No. 2 clamping jaw 6.

[0082] The beneficial effect of adopting the preferred solution in the above embodiment is that, when the second clamping jaw 6 is driven to slide by the linear driving member 7 , the clamping block 412 is slidably connected in the clamping slot 411 .

[0083] Based on the above embodiment, the locking slot 411 may be a stepped slot or a dovetail slot to prevent the locking block 412 connected to the locking slot 411 from sliding out of the slot 411 .

[0084] Example 9

[0085] like Figure 1 and Figure 2 On the basis of embodiments 1-8, the first clamping jaw 5 and the second clamping jaw 6 are both covered with a flexible layer 61 .

[0086] The beneficial effect of adopting the preferred solution in the above embodiment is that when the sampling tube 1 is clamped by the No. 1 clamping jaw 5 and the No. 2 clamping jaw 6, the two flexible layers 61 contact the sampling tube 1, and a protective operation can be formed by the flexible layers 61, reducing the chance of damage to the sampling tube 1.

[0087] The flexible layer 61 can be made of materials such as rubber and silicone.

[0088] Example 10

[0089] like Figure 1 and Figure 2 On the basis of embodiments 1-9, a storage plate 413 is further fixed to one end of the wrench 4, and the linear drive member 7 is installed on the storage plate 413.

[0090] The beneficial effect of adopting the preferred solution in the above embodiment is that the linear drive member 7 is installed through the storage plate 413.

[0091] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0093] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0094] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0096] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. Auxiliary wrench for grain sampler, characterized in that: The invention comprises a base frame (2), a guide rod (3) whose lower end is fixedly connected to the base frame (2), and a wrench (4) whose middle end is vertically slidably connected to the guide rod (3), wherein a No. 1 clamping jaw (5) is fixed to one end of the wrench (4), and a No. 2 clamping jaw (6) is slidably connected along its length direction, wherein the No. 2 clamping jaw (6) is located between the No. 1 clamping jaw (5) and the guide rod (3), and a clamping space for clamping the sample tube (1) is formed between the No. 1 clamping jaw (5) and the No. 1 clamping jaw (5), and the wrench (4) is also equipped with a linear drive member (7), and the drive of the linear drive member (7) is The end is connected to the side of the second clamp (6) away from the first clamp (5), the upper end of the guide rod (3) is installed with an upper proximity switch (71) located just above the other end of the wrench (4), and the upper side of the base frame (2) is installed with a lower proximity switch (72) located just below the other end of the wrench (4). The base frame (2) is also installed with an elastic component (8), and the elastic component (8) is vertically connected to the other end of the wrench (4). The upper proximity switch (71) and the lower proximity switch (72) are both communicatively connected to the linear drive member (7).

2. The grain sampler auxiliary wrench according to claim 1, characterized in that: The elastic component (8) includes a pressure plate (81) vertically slidably connected to the base frame (2), at least one lower pressure rod (82) and at least one spring (83), the lower end of each lower pressure rod (82) is fixedly connected to the upper side of the pressure plate (81), and the upper end is connected to the other end of the wrench (4), the lower end of each spring (83) is fixedly connected to the base frame (2), and the upper end is fixedly connected to the lower side of the pressure plate (81).

3. The grain sampler auxiliary wrench according to claim 2, characterized in that: The elastic component (8) further comprises a connecting plate (84) and a connecting bolt (85), wherein the connecting plate (84) is fixedly connected to the upper end of each of the lower pressing rods (82), and the connecting bolt (85) is simultaneously connected to the other end of the wrench (4) and the connecting plate (84).

4. The grain sampler auxiliary wrench according to claim 2, characterized in that: The base frame (2) is provided with two clamping grooves (221) vertically, the two clamping grooves (221) are provided facing each other, and the two ends of the pressing plate (81) are respectively adapted to and vertically slidably connected to the two clamping grooves (221).

5. The auxiliary wrench for grain sampler according to claim 1, characterized in that: The base frame (2) comprises a base plate (21) and two vertical support plates (22) arranged at intervals, the lower ends of the two support plates (22) are fixedly connected to the upper side of the base plate (21), and the elastic component (8) is installed on the base plate (21) and between the two support plates (22).

6. The auxiliary wrench for grain sampler according to claim 5, characterized in that: The base frame (2) further comprises two slot plates (23), and the two slot plates (23) are respectively slidably connected to the two ends of the base plate (21).

7. The auxiliary wrench for grain sampler according to any one of claims 1 to 6, characterized in that: A guide groove (31) is vertically provided on one side of the guide rod (3), and the wrench (4) is connected to a guide block (32), and the guide block (32) is adapted to and vertically slidably connected to the guide groove (31).

8. The auxiliary wrench for grain sampler according to any one of claims 1 to 6, characterized in that: A clamping slot (411) is provided on one side of the wrench (4), wherein the length direction of the clamping slot (411) extends along the arrangement direction of the No. 1 clamping jaw (5) and the No. 2 clamping jaw (6), and a clamping block (412) is adapted and slidably connected to the clamping slot (411), and the clamping block (412) is fixedly connected to the No. 2 clamping jaw (6).

9. The auxiliary wrench for grain sampler according to any one of claims 1 to 6, characterized in that: The first clamping jaw (5) and the second clamping jaw (6) are both covered with a flexible layer (61).

10. The auxiliary wrench for grain sampler according to any one of claims 1 to 6, characterized in that: A storage plate (413) is also fixed to one end of the wrench (4), and the linear drive member (7) is installed on the storage plate (413).

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