Sampling device

Abstract

The utility model discloses a sampling device, which relates to the field of grain processing technology. The sampling device comprises a fixed frame, a sampling rod, a rod box and an elastic member, wherein the sampling rod is arranged on one side of the fixed frame, and a mounting plate is convexly arranged on the outer periphery of the sampling rod; the rod box is fixedly sleeved on the outer periphery of the sampling rod and slidably arranged on the fixed frame, and the rod box has a box bottom abutting against the mounting plate and a box top away from the mounting plate; the elastic member is installed inside the rod box, and the two ends of the elastic member are respectively connected to the box bottom and the box top. The utility model provides a sampling device, which solves the problem that the existing sampling rod is easy to damage the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of grain processing, in particular to a sampling device. Background Art

[0002] At present, in order to check the quality of each layer of grain in a grain pile, a sampling machine is generally used to extract grain from each layer of the grain pile by insertion, and then the grain extracted by the sampling machine is checked to achieve the purpose of checking the quality of each layer of grain in the grain pile.

[0003] The sampling machine mainly relies on the feeding device on it to extract each layer of grain in the grain pile. The existing feeding device generally includes a sampling rod and a driving device that drives the sampling rod to move up and down. When it is necessary to sample the bottom grain in the grain pile, the driving device drives the sampling rod to move downward and insert it into the grain pile to extract the bottom grain in the grain pile.

[0004] However, since the head of the sampling rod is relatively sharp, during the sampling process, the lower end of the sampling rod often instantly impacts the vehicle and damages the vehicle due to improper operation by the staff. Utility Model Content

[0005] The main purpose of the utility model is to provide a sampling device, aiming to solve the problem that the existing sampling rod is easy to damage the vehicle.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a sampling device, which comprises:

[0007] Fixed frame;

[0008] A sampling rod is arranged on one side of the fixing frame, and a mounting plate is convexly provided on the outer periphery of the sampling rod;

[0009] A sampling rod box, fixedly sleeved on the outer periphery of the sampling rod and slidably arranged on the fixing frame, wherein the sampling rod box has a box bottom abutting against the mounting plate and a box top away from the mounting plate; and

[0010] The elastic member is installed inside the rod box, and two ends of the elastic member are respectively connected to the box bottom and the box top.

[0011] In one embodiment, the sampling device further comprises a driving device, which is fixed to the fixing frame and is drivingly connected to the sampling rod box.

[0012] In one embodiment, the sampling device further comprises:

[0013] A controller is disposed on one side of the fixing frame, and a preset threshold is stored in the controller; and

[0014] The transmitter is arranged on one side of the fixing frame, and the controller and the driving device are both communicatively connected with the transmitter.

[0015] In one embodiment, the sampling device further includes a transmission device, and the transmission device is disposed between the driving device and the sampling rod box to connect the driving device and the sampling rod box.

[0016] In one embodiment, the transmission device comprises:

[0017] a sprocket rotatably mounted on the fixing frame; and

[0018] an overload protector connected to the output shaft of the driving device, wherein the overload protector is spaced apart from the sprocket;

[0019] Wherein, the sprocket, the overload protector and the rod box are connected by chain transmission.

[0020] In one embodiment, the elastic member is a compression spring.

[0021] In one embodiment, the sampling device further comprises:

[0022] A trigger plate is disposed on a side of the rod box facing the fixing frame, and the trigger plate is protruded from the rod box; and

[0023] A proximity switch is installed on the fixing frame. The proximity switch is arranged on a side of the fixing frame facing the rod box and is used to sense the trigger plate.

[0024] In one embodiment, the rod box and the mounting plate are snap-connected.

[0025] In one embodiment, one of the rod skewer box and the mounting plate is provided with a slot, the other of the rod skewer box and the mounting plate is protrudingly provided with a block, and the slot and the block cooperate to connect the rod skewer box and the mounting plate.

[0026] In one embodiment, the rod skewer box is provided with a slider, which is arranged on the side of the rod skewer box facing the fixed frame, the fixed frame is provided with a slide groove, which is arranged on the side of the fixed frame facing the rod skewer box, and the slider is slidably arranged in the slide groove.

[0027] In one embodiment, the slider is further provided with a groove, the groove is provided on a side of the slider facing the groove wall of the slide groove, and the groove opening periphery of the slide groove extends into the groove.

[0028] Compared with the prior art, the utility model provides a technical solution in which a sampling rod in a sampling device is arranged on one side of a fixed frame, and a mounting plate is protruding from the outer periphery of the sampling rod, a sampling rod box is fixedly sleeved on the outer periphery of the sampling rod and installed on the mounting plate, and the sampling rod box has a box bottom abutting against the mounting plate and a box top away from the mounting plate. The specific sampling process is to drive the sampling rod to move up and down by sliding the sampling rod box on the fixed frame, so as to achieve the sampling of grain; in the process of the sampling rod descending, when the sampling rod moves downward to touch the vehicle, when the sampling rod box continues to descend, the top of the rod box will compress the elastic part inside the rod box, and the rebound force of the elastic part will gradually increase, thereby buffering the continued descent of the sampling rod, so that the sampling rod can gently touch the vehicle to form a protection for the vehicle, prevent the tip of the sampling rod from directly touching the vehicle with a strong impact force instantly, avoid the problem of puncturing the vehicle, and thus reduce unnecessary economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 This is a schematic structural diagram of an embodiment of the sampling device of the utility model;

[0031] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0032] Figure 3 It is a schematic structural diagram of a sampling rod in another embodiment of the sampling device of the utility model;

[0033] Figure 4 This is a partial structural schematic diagram of another embodiment of the sampling device of the utility model;

[0034] Figure 5 It is a structural schematic diagram of a sampling rod box in another embodiment of the sampling device of the utility model;

[0035] Figure 6 It is a structural schematic diagram of a fixing frame in another embodiment of the sampling device of the utility model.

[0036] Description of Figure Numbers:

[0037] 100. Sampling device; 1. Fixing frame; 11. Slide groove; 2. Sampling rod; 21. Mounting plate; 3. Sampling rod box; 31. Sliding block; 311. Groove; 4. Elastic member; 5. Driving device; 6. Transmission device; 61. Sprocket; 62. Overload protector; 7. Trigger plate; 8. Proximity switch.

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0043] When it is necessary to spot check the bottom grain in the grain pile, the driving device drives the sampling rod to move downward and insert it into the grain pile to extract the bottom grain in the grain pile. Since the head of the sampling rod is relatively sharp, during the sampling process, the lower end of the sampling rod often hits the vehicle instantly due to improper operation of the staff, causing damage to the vehicle.

[0044] Based on this, the utility model proposes a sampling device, in which an elastic part is provided inside a sampling rod box. During the sampling process, when the sampling rod contacts the vehicle, the top of the sampling rod box will compress the elastic part inside the sampling rod box, which can buffer the continued descent of the sampling rod, thereby avoiding the problem that the tip of the sampling rod directly touches the car body with strong force, causing the car to be pierced or the sampling rod to be damaged.

[0045] like Figure 1 — Figure 5 As shown, the sampling device 100 comprises:

[0046] Fixed frame 1;

[0047] The sampling rod 2 is arranged at one side of the fixing frame 1, and a mounting plate 21 is convexly arranged on the outer periphery of the sampling rod 2;

[0048] A sampling rod box 3 is fixedly sleeved on the outer periphery of the sampling rod 2 and slidably disposed on the fixing frame 1. The sampling rod box 3 has a box bottom abutting against the mounting plate 21 and a box top away from the mounting plate 21; and

[0049] The elastic member 4 is installed inside the rod box 3, and the two ends of the elastic member 4 are connected to the bottom and top of the box respectively.

[0050] In the technical solution adopted in this embodiment, the sampling rod 2 in the sampling device 100 is arranged on one side of the fixed frame 1, and a mounting plate 21 is protruded from the outer periphery of the sampling rod 2, and the sampling rod box 3 is fixedly sleeved on the outer periphery of the sampling rod 2 and installed on the mounting plate 21, and the sampling rod box 3 has a box bottom abutting against the mounting plate 21 and a box top away from the mounting plate 21. The specific sampling process is to drive the sampling rod 2 to move up and down by sliding the sampling rod box 3 on the fixed frame 1, so as to achieve the sampling of grain; in the process of the sampling rod 2 descending, when the sampling rod 2 moves downward to touch the vehicle, when the sampling rod box 3 continues to descend, the top of the rod box 3 will compress the elastic part 4 inside the rod box 3, and the rebound force of the elastic part 4 gradually increases, thereby playing a buffering role for the continued descent of the sampling rod 2, so that the sampling rod can gently touch the vehicle and form a protection for the vehicle, preventing the tip of the sampling rod 2 from directly touching the vehicle with a strong impact force instantly, avoiding the problem of puncturing the vehicle, and thus reducing unnecessary economic losses.

[0051] Specifically, the shape of the sampling rod box 3 is not specifically limited in the present embodiment, for example, it can include three parts: a box body, an upper cover and a lower cover, wherein the upper cover and the lower cover can be connected to the box body by bolts, and the entirety of the sampling rod box 3 is covered on the periphery of the sampling rod 2, the upper cover is in contact with the elastic member 4, and the lower cover is in contact with the mounting plate 21 on the sampling rod 2. It should be noted that the structure of the elastic member 4 is not specifically limited in the present embodiment, for example, it can be a spring, or an elastic column, etc., as long as it has a certain elasticity and can play a role in buffering and resetting. In another embodiment of the utility model, the elastic member 4 is a compression spring, so that it can ensure that the elastic force of the elastic member 4 is large enough, thereby improving the buffering force on the sampling rod 2 during its descent.

[0052] like Figure 5 As shown, in the embodiment of the utility model, the sampling device 100 further includes a driving device 5, which is fixed to the fixing frame 1 and is drivingly connected to the skewer box 3. The setting of the driving device 5 can provide power for the up and down movement of the skewer box 3, for example, it can be a reduction motor, a servo motor, a stepping motor, etc., as long as it is a driving device 5 that can provide power.

[0053] In an embodiment of the present utility model, the sampling device 100 further includes:

[0054] A controller is disposed on one side of the fixing frame 1, and a preset threshold is stored in the controller; and

[0055] The transmitter is arranged at one side of the fixing frame 1 , and the controller and the driving device 5 are both connected to the transmitter for communication.

[0056] Specifically, the sampling device 100 can also be provided with a controller and a transmitter. The controller can be a programmable controller and store a preset threshold value (such as a preset current value) internally. The transmitter can convert the output current of the driving device 5 during the sampling process into an analog signal and output it to the controller. When the controller detects that the output current reaches the preset current, the controller will stop the action of the driving device 5 to further prevent the sampling rod 2 from damaging the vehicle.

[0057] In the embodiment of the utility model, the sampling device 100 further includes a transmission device 6, which is disposed between the driving device 5 and the sampling box 3 to connect the driving device 5 and the sampling box 3. The structure of the transmission device 6 is not specifically limited, and for example, it can be a gear transmission, a universal joint transmission, a belt transmission or a chain transmission, as long as it can transmit the power of the driving device 5 and drive the sampling box 3 to move up and down.

[0058] like Figure 1 , Figure 2 and Figure 4 As shown, in an embodiment of the present utility model, the transmission device 6 includes:

[0059] The sprocket 61 is rotatably mounted on the fixed frame 1; and

[0060] An overload protector 62 is connected to the output shaft of the driving device 5, and the overload protector 62 is spaced apart from the sprocket 61;

[0061] The sprocket 61, the overload protector 62 and the rod box 3 are connected by chain transmission.

[0062] Specifically, the sprocket 61 can be installed on the fixed frame 1 through a fixed shaft, so as to guide and tension the chain; the overload protector 62 and the sprocket 61 can be respectively arranged on the opposite ends of the fixed frame 1, so that the chain is led out from the overload protector 62 to the sprocket 61 and then returns to the overload protector 62, forming a circular ring connected end to end; in addition, a chain mounting hole can also be opened on the rod box 3, so that the rod box 3, the sprocket 61 and the overload protector 62 are connected together through the chain. In this embodiment, the chain is driven to move by the driving device 5, and the movement of the chain drives the rod box 3 to move up and down, thereby driving the lifting and lowering of the sampling rod 2. In this embodiment, the overload protector 62 can be a torque limiter, which is installed on the output shaft of the driving device 5. When the force generated by the sampling rod 2 touching the vehicle is greater than the preload force of the torque limiter, the torque limiter will slip, thereby preventing the rod box 3 from further descending, thereby preventing the vehicle from being damaged.

[0063] like Figure 4 and Figure 5 As shown, in an embodiment of the present utility model, the sampling device 100 further includes:

[0064] A trigger plate 7 is disposed on a side of the rod box 3 facing the fixing frame 1, and the trigger plate 7 is protruded from the rod box 3; and

[0065] The proximity switch 8 is installed on the fixing frame 1 . The proximity switch 8 is arranged on a side of the fixing frame 1 facing the rod box 3 and is used to sense the trigger plate 7 .

[0066] Specifically, the sampling device 100 may also be provided with a trigger plate 7 and a proximity switch 8. The proximity switch 8 is arranged at a lower position on the fixed frame 1. When the sampling rod 2 is driven by the sampling rod box 3 and descends to the lowest position, the proximity switch 8 senses the trigger plate 7 in the sensing area. The proximity switch 8 will output a closing signal to the controller, and the controller will stop the action of the driving device 5, thereby preventing the sampling rod 2 from continuing to descend and damaging the vehicle.

[0067] In the embodiment of the utility model, in order to improve the synchronization of the action between the rod box 3 and the sampling rod 2, the rod box 3 and the mounting plate 21 in the present solution are fixed by a clamping method. Of course, in other embodiments, a detachable connection method such as a threaded connection can also be used. In another embodiment of the utility model, one of the rod box 3 and the mounting plate 21 can be provided with a clamping groove, and the other of the rod box 3 and the mounting plate 21 can be protruding with a clamping block, and the clamping groove and the clamping block cooperate to clamp and fix the rod box 3 and the mounting plate 21.

[0068] like Figure 1 , Figure 2 and Figure 6 As shown, in the embodiment of the utility model, the rod box 3 is provided with a slider 31, and the slider 31 is provided on the side of the rod box 3 facing the fixed frame 1. The fixed frame 1 can be a square tube, and a slide groove 11 is provided on its side. The slide groove 11 is provided on the side of the fixed frame 1 facing the rod box 3, and the slider 31 is slidably provided in the slide groove 11 to complete the up and down lifting action. Of course, in another embodiment, a guide seat can also be provided at the bottom of the fixed frame 1, and the sampling rod 2 is slidably provided in the guide seat to guide the lifting process of the sampling rod 2.

[0069] like Figure 5 As shown, in an embodiment of the utility model, grooves 311 can also be opened on opposite sides of the slider 31, and the groove 311 is arranged on one side of the slider 31 facing the groove wall of the slide groove 11, and the groove edge of the slide groove 11 extends into the groove 311, thereby ensuring that the slider 31 slides smoothly in the slide groove 11.

[0070] The specific working process of the utility model is as follows: when sampling, the driving device 5 is first started, and the driving device 5 drives the chain to rotate downward through the torque limiter, and the chain drives the slider 31 on the sampling rod box 3 to move, and the slider 31 drives the sampling rod 2 to move downward. During the downward movement of the sampling rod 2, due to the effect of gravity, the elastic member 4 is in a released state; when the sampling rod 2 just touches a hard object such as a car head or a car compartment, the sampling rod 2 continues to descend and compresses the elastic member 4 inside the sampling rod box 3, and the elastic member 4 is compressed to generate a reverse elastic force, And as the sampling rod 2 continues to descend, it gradually increases, thereby providing buffer protection for the sampling rod 2, preventing the sampling rod 2 from directly touching the vehicle and damaging the vehicle, playing the first protection role; when the elastic member 4 is compressed to 1 / 3 of the maximum compression, due to the transmission effect of the chain, the current output by the drive device 5 gradually increases. At this time, the output current of the drive device 5 will reach the preset protection current, and the transmitter transmits the current value of the drive device 5 to the controller, and the controller sends a stop movement instruction to the drive device 5 to prevent the vehicle from being damaged, playing the role of The second protection function; when the driving device 5 fails to stop in time or the transmitter fails, or when the upward force transmitted by the vehicle to the sampling rod 2 is greater than 120% of the preset current, the torque limiter will work and cause slippage, so that the sampling rod 2 cannot continue to descend to prevent the vehicle from being damaged, which plays a third protection role; when the above three protections do not work, the sampling rod 2 continues to descend, and the elastic member 4 will be further compressed until it is compressed to 2 / 3 of the maximum compression amount. At this time, the sampling rod box 3 The trigger plate 7 will trigger the proximity switch 8, and the proximity switch 8 will transmit the output switch signal to the controller. The controller controls the sampling rod 2 to stop moving to prevent the vehicle from being damaged, thus playing the fourth protection role. When the sampling work is completed, the driving device 5 starts to rotate in the opposite direction, driving the torque limiter to rotate upward, the torque limiter drives the chain to move upward, the chain drives the slider 31 to move upward, the slider 31 drives the sampling rod box 3 to move upward, and the sampling rod box 3 drives the sampling rod 2 to move upward until it returns to the initial position in preparation for subsequent work.

[0071] In general, in this scheme, the above-mentioned four-fold protection is used to comprehensively judge the movement state of the sampling rod 2, and the force exerted on the sampling rod 2 during the sampling process is analyzed and transformed to ensure that the sampling rod 2 gently touches the front, compartment or bottom of the vehicle and other structures, thereby realizing step-by-step protection of the vehicle and avoiding unnecessary economic losses caused by puncturing the vehicle.

[0072] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A sampling device, characterized in that: The sampling device comprises: Fixed frame; A sampling rod is arranged on one side of the fixing frame, and a mounting plate is convexly provided on the outer periphery of the sampling rod; A sampling rod box, fixedly sleeved on the outer periphery of the sampling rod and slidably arranged on the fixing frame, wherein the sampling rod box has a box bottom abutting against the mounting plate and a box top away from the mounting plate; and The elastic member is installed inside the rod box, and two ends of the elastic member are respectively connected to the box bottom and the box top.

2. The sampling device according to claim 1, characterized in that: The sampling device also includes a driving device, which is fixed to the fixing frame and is drivingly connected to the sampling rod box.

3. The sampling device according to claim 2, characterized in that: The sampling device also includes: A controller is disposed on one side of the fixing frame, and a preset threshold is stored in the controller; and The transmitter is arranged on one side of the fixing frame, and the controller and the driving device are both communicatively connected with the transmitter.

4. The sampling device according to claim 2, characterized in that: The sampling device further comprises a transmission device, which is arranged between the driving device and the sampling rod box to connect the driving device and the sampling rod box.

5. The sampling device according to claim 4, characterized in that: The transmission device comprises: a sprocket rotatably mounted on the fixing frame; and an overload protector connected to the output shaft of the driving device, wherein the overload protector is spaced apart from the sprocket; Wherein, the sprocket, the overload protector and the rod box are connected by chain transmission.

6. The sampling device according to claim 1, characterized in that: The elastic member is a compression spring; and / or, The sampling device also includes: A trigger plate is disposed on a side of the rod box facing the fixing frame, and the trigger plate is protruded from the rod box; and A proximity switch is installed on the fixing frame. The proximity switch is arranged on a side of the fixing frame facing the rod box and is used to sense the trigger plate.

7. The sampling device according to claim 1, characterized in that: The rod box and the mounting plate are snap-connected.

8. The sampling device according to claim 7, characterized in that: One of the rod-skewer box and the mounting plate is provided with a slot, the other of the rod-skewer box and the mounting plate is protrudingly provided with a block, and the slot and the block cooperate to connect the rod-skewer box and the mounting plate.

9. The sampling device according to any one of claims 1 to 8, characterized in that: The rod-skewering box is provided with a slider, which is arranged on the side of the rod-skewering box facing the fixed frame. The fixed frame is provided with a slide groove, which is arranged on the side of the fixed frame facing the rod-skewering box, and the slider is slidably arranged in the slide groove.

10. The sampling device according to claim 9, characterized in that: The slider is further provided with a groove, which is arranged on one side of the slider facing the groove wall of the slide slot, and the groove opening periphery of the slide slot extends into the groove.

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