Sampling mechanism and sampling equipment

Abstract

The utility model discloses a sampling mechanism and a sampling device, comprising: a support arm having a connection end; a connection arm rotatably connected to the connection end; a sampling rod rotatably connected to an end of the connection arm away from the connection end; a cam convexly arranged at the connection end; a push rod assembly slidably arranged on the connection arm and extending parallel to the connection arm, one end of the push rod assembly abutting against the cam; a clamping assembly arranged on the connection arm, the push rod assembly having a clamping state and a release state, and the push rod assembly is drivingly connected to the clamping assembly; wherein the connection arm swings relative to the support arm, so that the cam drives the push rod assembly to slide back and forth, thereby driving the clamping assembly to cyclically switch between the clamping state and the release state. The utility model aims to provide a low-cost sampling mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling equipment, in particular to a sampling mechanism and sampling equipment. Background Art

[0002] In the existing oil tank sampling robots, the position adjustment and storage of the support arm and the sampling rod are all driven by motors. This structural form is likely to increase costs, and because grain and oil are easily deteriorated and flammable when exposed to heat, there are certain risks in using electronic devices. Utility Model Content

[0003] The main purpose of the utility model is to provide a sampling mechanism and a sampling device, aiming at proposing a low-cost sampling mechanism.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes 1. a sampling mechanism, characterized in that it comprises:

[0005] a support arm having a connecting end;

[0006] A connecting arm, rotatably connected to the connecting end;

[0007] A sampling rod, rotatably connected to an end of the connecting arm away from the connecting end;

[0008] A cam, convexly disposed on the connecting end;

[0009] A push rod assembly is slidably disposed on the connecting arm and extends parallel to the connecting arm, and one end of the push rod assembly abuts against the cam;

[0010] A clamping assembly is provided on the connecting arm, the clamping assembly has a clamping state and a releasing state, and the push rod assembly is drivingly connected to the clamping assembly;

[0011] The connecting arm swings relative to the supporting arm, so that the cam drives the push rod assembly to slide back and forth, thereby driving the clamping assembly to cyclically switch between the clamping state and the releasing state to clamp or release the sampling rod.

[0012] Optionally, the clamping assembly comprises:

[0013] A support rod rotatably disposed on the connecting arm;

[0014] A rotating disk is arranged on the supporting rod, the rotating disk has a first end and a second end opposite to each other, the first end is provided with a first ratchet tooth, the second end is provided with a second ratchet tooth, and a plurality of the first ratchet teeth and the second ratchet teeth are arranged at intervals along the circumferential direction of the rotating disk;

[0015] A driving plate, arranged on the supporting rod;

[0016] A clamping plate, disposed on one side of the connecting arm and movably connected to the connecting arm, the clamping plate abutting against a side wall of the driving plate;

[0017] The push rod assembly slides back and forth to alternately mesh with the first ratchet and the second ratchet to drive the turntable to drive the driving plate to rotate, thereby driving the clamping plate to move closer to or away from the connecting arm to clamp or release the sampling rod.

[0018] Optionally, the clamping assembly further comprises:

[0019] A plurality of connecting rods are provided, and the plurality of connecting rods are arranged along the periphery of the clamping plate, one end of the connecting rod is connected to the connecting arm, and the other end is movably arranged through the clamping plate;

[0020] The first elastic member elastically connects the connecting rod and the clamping plate so that the clamping plate tends to approach the connecting arm.

[0021] Optionally, the splint comprises:

[0022] A connecting portion, slidably connected to the plurality of connecting rods;

[0023] The limiting portion is convexly arranged on one side of the connecting portion and extends obliquely toward the sampling rod.

[0024] Optionally, the driving plate includes two spaced-apart square plates, and the two square plates are coaxially arranged with the supporting rod.

[0025] Optionally, the clamping assembly further includes a support, and two supports are provided. The two supports are arranged at opposite ends of the support rod and are rotatably connected to the support rod respectively.

[0026] Optionally, the push rod assembly comprises:

[0027] A slide bar, slidably connected to the connecting arm, the slide bar having a first end and a second end opposite to each other, the first end slidably cooperates with the cam;

[0028] An adjusting rod is arranged at the second end, and the adjusting rod abuts against the side wall of the rotating disk.

[0029] Optionally, the push rod assembly further includes a roller, which is rotatably disposed at the first end and is rollingly connected to the cam.

[0030] Optionally, the push rod assembly further includes a second elastic member, which elastically connects the sliding rod and the connecting arm so that the sliding rod elastically abuts against the cam.

[0031] The utility model also provides a sampling device, comprising the sampling mechanism described above.

[0032] In the technical solution of the utility model, the sampling mechanism includes a support arm, which has a connecting end, the connecting end is rotatably connected to the connecting arm, and the end of the connecting arm away from the connecting end is rotatably connected to the sampling rod. In addition, the connecting end is also convexly provided with a cam structure, and a push rod assembly is also slidably provided on the connecting arm. The push rod assembly extends parallel to the connecting arm, and one end of the push rod assembly abuts against the cam. With the reciprocating swing of the connecting arm, the push rod assembly can reciprocate along the axial direction of the push rod assembly under the drive of the cam. In addition, the sampling mechanism also includes a clamping assembly The clamping assembly is arranged on the connecting arm, and the clamping assembly has a clamping state and a releasing state. The push rod assembly is drivingly connected to the clamping assembly. When the connecting arm swings back and forth, the push rod assembly slides back and forth, driving the clamping assembly to cyclically switch between the clamping state and the releasing state, thereby clamping or releasing the sampling rod. In this solution, the sampling rod can be released and fixed by the swing of the connecting arm, which has the advantages of simple structure and convenient operation. In addition, compared with the solution using a motor, it is beneficial to reduce costs and improve the safety of oil storage tank sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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.

[0034] Figure 1 It is a structural schematic diagram of the sampling mechanism of the utility model;

[0035] Figure 2 Another structural schematic diagram of the sampling mechanism of the utility model;

[0036] Figure 3 It is another structural schematic diagram of the sampling mechanism of the utility model;

[0037] Figure 4 This is another structural schematic diagram of the sampling mechanism of the utility model.

[0038] Description of Figure Numbers:

[0039] 100, support arm; 200, connecting arm; 300, sampling rod; 400, cam; 500, push rod assembly; 600, clamping assembly; 510, sliding rod; 520, adjusting rod; 530, roller; 540, second elastic member; 610, support rod; 620, turntable; 630, driving plate; 640, clamping plate; 650, connecting rod; 660, first elastic member; 670, support; 641, connecting part; 642, limiting part.

[0040] 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

[0041] 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.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] 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.

[0044] 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.

[0045] This technical solution proposes a sampling mechanism, including:

[0046] A support arm 100 having a connecting end;

[0047] A connecting arm 200, rotatably connected to the connecting end;

[0048] The sampling rod 300 is rotatably connected to an end of the connecting arm 200 away from the connecting end;

[0049] A cam 400 is convexly disposed at the connection end;

[0050] A push rod assembly 500 is slidably disposed on the connecting arm 200 and extends parallel to the connecting arm 200, and one end of the push rod assembly 500 abuts against the cam 400;

[0051] The clamping assembly 600 is provided on the connecting arm 200. The clamping assembly 600 has a clamping state and a releasing state. The push rod assembly 500 is drivingly connected to the clamping assembly 600.

[0052] The connecting arm 200 swings relative to the supporting arm 100 , so that the cam 400 drives the push rod assembly 500 to slide back and forth, thereby driving the clamping assembly 600 to cyclically switch between the clamping state and the releasing state to clamp or release the sampling rod 300 .

[0053] In the technical solution of the utility model, the sampling mechanism includes a support arm 100, which has a connecting end, and the connecting end is rotatably connected to the connecting arm 200. The end of the connecting arm 200 away from the connecting end is rotatably connected to the sampling rod 300. In addition, the connecting end is also convexly provided with a cam 400 structure. The connecting arm 200 is also slidably provided with a push rod assembly 500, which extends parallel to the connecting arm 200. One end of the push rod assembly 500 abuts against the cam 400. As the connecting arm 200 swings back and forth, the push rod assembly 500 can reciprocate along the axial direction of the push rod assembly 500 under the drive of the cam 400. In addition, the sampling mechanism also includes The clamping assembly 600 is included and is arranged on the connecting arm 200. The clamping assembly 600 has a clamping state and a releasing state. The push rod assembly 500 is drivingly connected to the clamping assembly 600. When the connecting arm 200 swings back and forth, the push rod assembly 500 slides back and forth, driving the clamping assembly 600 to cyclically switch between the clamping state and the releasing state, thereby clamping or releasing the sampling rod 300. In this solution, the sampling rod 300 can be released and fixed by swinging the connecting arm 200, which has the advantages of simple structure and convenient operation. At the same time, compared with the solution using a motor, it is also beneficial to reduce costs and improve the safety of oil tank sampling.

[0054] Specifically, Figure 1~Figure 4The sampling mechanism includes a support arm 100 and a connecting arm 200, wherein the support arm 100 can be connected to the body of the sampling robot, the support arm 100 has a connecting end, the connecting arm 200 is rotatably connected to the connecting end, and can swing relative to the support arm 100; the sampling mechanism also includes a sampling rod 300, the sampling rod 300 is rotatably connected to an end of the connecting arm 200 away from the support arm 100, and the sampling rod 300 can be freely suspended under the action of gravity. For example, when the connecting arm 200 is rotated to be parallel to the support arm 100 and placed horizontally, the sampling rod 300 can be vertically downward, and the position of the sampling rod 300 in the horizontal direction and the height in the vertical direction can be adjusted by driving the support arm 100 and the mechanical arm to swing by a motor, so as to achieve sampling, Figure 1In the embodiment, when the connecting arm 200 swings to a vertical position, the sampling rod 300 is parallel to the connecting arm 200 and fits with the side of the connecting arm 200; in order to facilitate the folding and release of the sampling rod 300, the sampling mechanism further includes a cam 400, a push rod assembly 500 and a clamping assembly 600, wherein the cam 400 is convexly arranged at the connecting end, the push rod assembly 500 is slidably arranged on the connecting arm 200 and extends parallel to the connecting arm 200, and one end of the push rod assembly 500 abuts against the cam 400. When the connecting arm 200 swings, the push rod assembly 500 can slide on the outer peripheral wall of the cam 400 and slide along the axial direction of the push rod assembly 500 under the action of the cam 400. In this embodiment, when the connecting arm 200 swings from a position perpendicular to the support arm 100 to a position in contact with the support arm 100, the push rod assembly 500 will be pushed out away from the connecting end under the action of the cam 400. When the connecting arm 200 rotates in the opposite direction from a position perpendicular to the support arm 100, the push rod assembly 500 will not slide. In addition, the clamping assembly 600 is arranged on the connecting arm 200. The clamping assembly 600 has a clamping state and a releasing state. The push rod assembly 500 is drivingly connected to the clamping assembly 600. When the connecting arm 200 swings from a position perpendicular to the support arm 100 to a position in contact with the support arm 100, the push rod assembly 500 will drive the clamping assembly 600 to switch from the releasing state to the clamping state. In this process, the sampling rod 300 is always connected to the connecting arm 200 under the action of gravity. 00 is fitted, the clamping assembly 600 clamps and fixes the sampling rod 300, and after the connecting arm 200 is fitted with the support arm 100, the connecting arm 200, the support arm 100 and the sampling rod 300 are folded to achieve storage; and when the connecting arm 200 rotates in the opposite direction from the state of fitting with the support arm 100, the push rod assembly 500 moves in the opposite direction, driving the clamping assembly 600 to switch from the clamping state to the releasing state, at which time the sampling rod 300 can be released by the clamping assembly 600 to facilitate subsequent sampling. In this embodiment, through the arrangement of the cam 400, the push rod assembly 500 and the clamping assembly 600, the fixing and releasing of the sampling rod 300 can be achieved during the folding or opening of the connecting arm 200, eliminating the need to arrange a motor on the connecting arm 200 to drive the sampling rod 300 to swing, which not only reduces the cost but also facilitates the folding and storage of the sampling rod 300. Due to the reduction of electronic equipment, the safety of oil tank sampling is also improved.

[0055] Further, the clamping assembly 600 includes:

[0056] A support rod 610 is rotatably mounted on the connecting arm 200;

[0057] The rotating disk 620 is disposed on the supporting rod 610. The rotating disk 620 has a first end and a second end opposite to each other. The first end is provided with a first ratchet tooth, and the second end is provided with a second ratchet tooth. A plurality of the first ratchet teeth and the second ratchet teeth are arranged at intervals along the circumferential direction of the rotating disk 620.

[0058] A driving plate 630 is disposed on the support rod 610;

[0059] The clamping plate 640 is disposed on one side of the connecting arm 200 and is movably connected to the connecting arm 200, and the clamping plate 640 abuts against the side wall of the driving plate 630;

[0060] The push rod assembly 500 slides back and forth to alternately mesh with the first ratchet and the second ratchet to drive the turntable 620 to drive the driving plate 630 to rotate, thereby driving the clamping plate 640 to move closer to or away from the connecting arm 200 to clamp or release the sampling rod 300.

[0061] Specifically, Figure 1~Figure 4, this embodiment provides a structural form of a clamping assembly 600. In this solution, the clamping assembly 600 includes a support rod 610, which is rotatably connected to the outer wall of the support arm 100. The support rod 610 is arranged parallel to the connecting arm 200. A turntable 620 is arranged on the support rod 610. The turntable 620 is a cylindrical structure. The turntable 620 has a first end and a second end opposite to each other. A first ratchet is arranged on the outer peripheral wall of the first end of the turntable 620, and a second ratchet is arranged on the outer peripheral wall of the second end of the turntable 620. The first ratchet and the second ratchet are both A plurality of first ratchet teeth and second ratchet teeth are arranged in a circular array around the axis of the rotating disk 620. In this solution, eight first ratchet teeth and eight second ratchet teeth are provided, and the first ratchet teeth and the second ratchet teeth are staggered and extend toward each other. The process in which the connecting arm 200 swings from a position perpendicular to the supporting arm 100 to abutting against the supporting arm 100 and then swings in the opposite direction to be perpendicular to the supporting arm 100 is set as one action. In one action, the push rod assembly 500 will move away from the connecting end and then approach the connecting end under the action of the cam 400, completing a set of reciprocating sliding actions. In this solution, one end of the push rod assembly 500 is aligned with the rotating disk 620. 0, and in the process of sliding away from the connecting end, the push rod assembly 500 will mesh with the first ratchet, and push the turntable 620 to rotate by cooperating with the inclined surface on the top surface of the first ratchet. After the connecting arm 200 and the supporting arm 100 are fitted, the push rod assembly 500 abuts against the root of the first ratchet, and then the push rod assembly 500 slides in the opposite direction and meshes with the second ratchet, and continues to push the turntable 620 to rotate in the same direction until the connecting arm 200 and the supporting arm 100 are perpendicular. At this time, the push rod assembly 500 abuts against the root of the second ratchet. During this process, the turntable 620 rotates 45 When the connecting arm 200 repeats the above swinging action, the push rod assembly 500 will drive the turntable 620 to rotate 45 degrees in each cycle; in addition, in this solution, the clamping assembly 600 also includes a driving plate 630 and a clamping plate 640, wherein the driving plate 630 rotates with the turntable 620, and the driving plate 630 can be a square plate, and the outer peripheral wall of the driving plate 630 abuts against the clamping plate 640. In this way, when the turntable 620 cyclically rotates, the clamping plate 640 will cyclically move closer to or away from the connecting arm 200 under the action of the driving plate 630, thereby achieving the clamping or release of the sampling rod 300.In the sampling robot scheme used in the present scheme, an observation device such as a camera is also provided on the end of the connecting arm 200 away from the supporting arm 100. After the sampling robot completes its work, the connecting arm 200 fits with the supporting arm 100. At this time, the push rod assembly 500 is engaged with the first ratchet, and the splint 640 does not completely clamp the sampling rod 300. However, the sampling rod 300 can still be stably fitted on the connecting arm 200 under the action of gravity. During operation, the connecting arm 200 is opened. At this time, the push rod is engaged with the second ratchet, and the splint 640 completely clamps the sampling rod 300. At this time, the oil tank can be observed through the observation device, and then the connecting arm 200 is folded and opened again. At this time, the splint 640 can release the sampling rod 300 for sampling. With this arrangement, the sampling robot has two forms: an observation state and a sampling state. While satisfying the sampling, it also prevents the sampling rod 300 from blocking the observation device.

[0062] Furthermore, the clamping assembly 600 further includes:

[0063] A plurality of connecting rods 650 are provided, and the plurality of connecting rods 650 are arranged along the periphery of the clamping plate 640, one end of the connecting rod 650 is connected to the connecting arm 200, and the other end is movably arranged in the clamping plate 640;

[0064] The first elastic member 660 elastically connects the connecting rod 650 and the clamping plate 640 , so that the clamping plate 640 tends to be close to the connecting arm 200 .

[0065] like Figure 2 In the present embodiment, the clamping assembly 600 includes a plurality of connecting rods 650, and the plurality of connecting rods 650 are arranged along the periphery of the clamping plate 640, and one end of the connecting rods 650 is connected to the connecting arm 200, and the other end is movably arranged on the clamping plate 640. In this way, the stability of the clamping plate 640 during movement can be ensured by the arrangement of the plurality of connecting rods 650, thereby improving the stability of clamping the sampling rod 300. In addition, a first elastic member 660 can be sleeved on each connecting rod 650, and the first elastic member 660 elastically connects the connecting rod 650 and the clamping plate 640. The first elastic member 660 can be an axial compression spring, and the first elastic member 660 applies a force to the clamping plate 640 toward one side of the connecting arm 200, so that the clamping plate 640 can be in close contact with the driving plate 630. In this way, when the driving plate 630 rotates, the clamping plate 640 can smoothly switch between the clamping and releasing positions to prevent the clamping plate 640 from being stuck.

[0066] Further, the clamping plate 640 includes:

[0067] The connecting portion 641 is slidably connected to a plurality of connecting rods 650;

[0068] The limiting portion 642 is protruded from one side of the connecting portion 641 and extends obliquely toward the sampling rod 300 .

[0069] Specifically, Figure 4 In the present embodiment, the clamping plate 640 includes a connecting portion 641, which is a flat plate structure. The connecting portion 641 is parallel to the side wall of the connecting arm 200 and is slidably connected to the plurality of connecting rods 650. The driving plate 630 abuts against the connecting portion 641. A limiting portion 642 is convexly provided on one side of the connecting portion 641. The limiting portion 642 extends obliquely toward one side of the sampling rod 300. In this way, a clamping space is formed between the limiting portion 642 and the connecting arm 200. The end of the limiting portion 642 away from the connecting portion 641 can limit the separation of the sampling rod 300 from the connecting arm 200, and the end of the limiting portion 642 close to the connecting portion 641 can avoid the sampling rod 300, so that the sampling rod 300 can shake in the clamping space, thereby preventing the clamping plate 640 from clamping the sampling rod 300 too tightly and causing damage to the sampling rod 300 or the clamping plate 640.

[0070] Furthermore, the driving plate 630 includes two spaced-apart square plates, and the two square plates are coaxially arranged with the support rod 610. Figure 2 In this embodiment, the driving plate 630 includes two spaced-apart square plates, which are coaxially arranged with the support rod 610. The arrangement of the two square plates can increase the number of abutment positions with the clamping plate 640, so that the clamping plate 640 can remain stable when the driving plate 630 pushes the clamping plate 640 to move.

[0071] Furthermore, the clamping assembly 600 further includes a support 670, and two supports 670 are provided. The two supports 670 are provided at opposite ends of the support rod 610 and are rotatably connected to the support rod 610 respectively. Figure 2 The clamping assembly 600 also includes two supports 670, which are arranged at opposite ends of the support rod 610 and connected to the connecting arm 200. The support rod 610 is rotatably connected to the supports 670 through bearings. The two supports 670 support both ends of the support rod 610, thereby improving the stability of the support rod 610 during rotation.

[0072] Further, the push rod assembly 500 includes:

[0073] A slide bar 510 is slidably connected to the connecting arm 200. The slide bar 510 has a first end and a second end opposite to each other. The first end is slidably matched with the cam 400.

[0074] The adjusting rod 520 is disposed at the second end, and the adjusting rod 520 abuts against the side wall of the rotating disk 620 .

[0075] Specifically, Figure 2In this solution, the push rod assembly 500 includes a slide bar 510 and an adjustment bar 520, wherein the slide bar 510 is parallel to the connecting arm 200 and is slidably arranged in the connecting arm 200, so that the protection of the slide bar 510 can be improved and the space occupied by the sampling mechanism can be reduced. The slide bar 510 has a first end and a second end opposite to each other, wherein the first end is slidably matched with the cam 400, and the second end is provided with an adjustment bar 520, which is arranged perpendicular to the slide bar 510, and one end of the adjustment bar 520 abuts against the side wall of the rotating disk 620, and the sliding of the slide bar 510 can drive the movement of the adjustment bar 520 and then drive the rotating disk 620 to rotate through the adjustment bar 520. The adjustment bar 520 and the slide bar 510 can be assembled by plugging or the like to reduce the difficulty of processing.

[0076] Furthermore, the push rod assembly 500 further includes a roller 530, which is rotatably disposed at the first end and is rollingly connected to the cam 400. Figure 2 In order to reduce the wear of the slide bar 510 and the cam 400, the push rod assembly 500 also includes a roller 530, which is rotatably arranged at the first end of the slide bar 510. The roller 530 is rollingly connected to the cam 400, and the sliding of the slide bar 510 is indirectly driven by the rolling of the roller 530 on the cam 400, so that the wear of the slide bar 510 and the cam 400 can be reduced, thereby extending the service life of the sampling mechanism.

[0077] Furthermore, the push rod assembly 500 further includes a second elastic member 540, which elastically connects the slide rod 510 and the connecting arm 200 so that the slide rod 510 elastically abuts against the cam 400. Figure 2 The push rod assembly 500 also includes a second elastic member 540, which can be an axial compression spring sleeved on the slide rod 510. The second elastic member 540 connects the slide rod 510 and the connecting arm 200, so that the slide rod 510 elastically abuts against the cam 400. In this way, the slide rod 510 and the cam 400 are always kept in contact through the action of the second elastic member 540, ensuring that the slide rod 510 can apply a greater force to the turntable 620, so that the turntable 620 rotates smoothly, thereby ensuring the smooth position switching of the splint 640.

[0078] The utility model also proposes a sampling device, which includes a device body and a sampling mechanism arranged on the device body. The specific structure of the sampling mechanism refers to the above-mentioned embodiment. Since the sampling device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0079] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sampling mechanism, characterized in that: include: a support arm having a connecting end; A connecting arm, rotatably connected to the connecting end; A sampling rod, rotatably connected to an end of the connecting arm away from the connecting end; A cam, convexly disposed on the connecting end; A push rod assembly is slidably disposed on the connecting arm and extends parallel to the connecting arm, and one end of the push rod assembly abuts against the cam; A clamping assembly is provided on the connecting arm, the clamping assembly has a clamping state and a releasing state, and the push rod assembly is drivingly connected to the clamping assembly; The connecting arm swings relative to the supporting arm, so that the cam drives the push rod assembly to slide back and forth, thereby driving the clamping assembly to cyclically switch between the clamping state and the releasing state to clamp or release the sampling rod.

2. The sampling mechanism according to claim 1, characterized in that: The clamping assembly comprises: A support rod rotatably disposed on the connecting arm; A rotating disk is arranged on the supporting rod, the rotating disk has a first end and a second end opposite to each other, the first end is provided with a first ratchet tooth, the second end is provided with a second ratchet tooth, and a plurality of the first ratchet teeth and the second ratchet teeth are arranged at intervals along the circumferential direction of the rotating disk; A driving plate, arranged on the supporting rod; A clamping plate, disposed on one side of the connecting arm and movably connected to the connecting arm, the clamping plate abutting against a side wall of the driving plate; The push rod assembly slides back and forth to alternately mesh with the first ratchet and the second ratchet to drive the turntable to drive the driving plate to rotate, thereby driving the clamping plate to move closer to or away from the connecting arm to clamp or release the sampling rod.

3. The sampling mechanism according to claim 2, characterized in that: The clamping assembly also includes: A plurality of connecting rods are provided, and the plurality of connecting rods are arranged along the periphery of the clamping plate, one end of the connecting rod is connected to the connecting arm, and the other end is movably arranged through the clamping plate; The first elastic member elastically connects the connecting rod and the clamping plate so that the clamping plate tends to approach the connecting arm.

4. The sampling mechanism according to claim 3, characterized in that: The splint comprises: A connecting portion, slidably connected to the plurality of connecting rods; The limiting portion is convexly arranged on one side of the connecting portion and extends obliquely toward the sampling rod.

5. The sampling mechanism according to claim 2, characterized in that: The driving plate comprises two spaced-apart square plates, and the two square plates are coaxially arranged with the supporting rod.

6. The sampling mechanism according to claim 2, characterized in that: The clamping assembly also includes a support, and two supports are provided. The two supports are arranged at opposite ends of the support rod and are rotatably connected to the support rod respectively.

7. The sampling mechanism according to claim 2, characterized in that: The push rod assembly comprises: A slide bar, slidably connected to the connecting arm, the slide bar having a first end and a second end opposite to each other, the first end slidably cooperates with the cam; An adjusting rod is arranged at the second end, and the adjusting rod abuts against the side wall of the rotating disk.

8. The sampling mechanism according to claim 7, characterized in that: The push rod assembly also includes a roller, which is rotatably disposed at the first end and is rollingly connected to the cam.

9. The sampling mechanism according to claim 7, characterized in that: The push rod assembly further includes a second elastic member, which elastically connects the slide rod and the connecting arm so that the slide rod elastically abuts against the cam.

10. A sampling device, characterized in that: A sampling mechanism comprising any one of claims 1 to 9.

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