High-frequency sampling machine

Abstract

The invention relates to the technical field of sampling machine equipment, in particular to a high-frequency sampling machine which comprises a vehicle main body, a sampling machine main body and a mounting structure for mounting the sampling machine main body on the vehicle main body, the mounting structure comprises a supporting seat connected to the vehicle main body and a butt-joint seat connected to the sampling machine main body, the supporting seat is provided with at least one butt-joint groove, the butt-joint seat is provided with at least one butt-joint block corresponding to the butt-joint groove, and the butt-joint block is inserted into the butt-joint groove; the positioning structure comprises two pushing plates which are respectively arranged at the two ends of the butt joint block; the device further comprises a power source, and the power source drives the two pushing plates to move oppositely, so that the two pushing plates abut against the two ends of the butt joint block respectively. Positioning and fixing of the sampling machine body and the vehicle are automatically achieved without manual intervention, and convenience and accuracy of positioning and fixing operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model sampling machine equipment's technical field relates to a high frequency sampling machine particularly. BACKGROUND

[0002] High frequency sampling machine is a kind of special equipment that can complete data or sample collection at extremely high frequency (usually hundreds to thousands of times per second), and its core realizes rapid response and accurate operation through high-speed sensor, precise control algorithm and high-efficiency power system;For example, in the industrial field, it can carry out millisecond-level real-time monitoring on production line material composition, temperature or pressure to ensure product quality stability;In environmental monitoring, it can collect high-frequency data such as atmospheric particulate matter and water quality parameters to provide high-resolution basis for pollution tracing;In the field of geological exploration, it uses high-frequency vibration drilling technology to quickly obtain deep soil or rock samples and improve exploration efficiency;In addition, the device is also applied to energy, agriculture and other fields, and realizes process optimization, fault warning and resource evaluation through high-frequency sampling, and becomes a key tool for modern intelligent monitoring and detection.

[0003] The existing sampling machine equipment, such as the patent with application number CNCN00224127.7, discloses a kind of full-automatic sampling machine, motor is installed on horizontal support, and the rotating shaft of transmission wheel is connected with the conveying belt in the conveying belt frame The sampling bucket is fixed; A mechanical arm is arranged on the transmission wheel, and a sample storage hopper is installed on the support corresponding to one end of the conveying belt, and a gate with vertical protrusions seals the lower end outlet of the sample storage hopper;The support also has a gear with a vertical short column on the side of the transmission wheel, and three collection bottles are arranged on the gear disc driven by the rotating motor, which can rotate around the vertical column.

[0004] Due to the actual detection needs, the above-mentioned sampling machine body often needs to be installed on a vehicle or other movable vehicle for multi-position sampling. When the equipment body is installed on the vehicle, the structure often has the characteristics of complex structure and large body, and manual installation needs to use external supports and a large number of connecting pieces for positioning and fixing. However, manual positioning and installation of the above-mentioned sampling machine body on the vehicle have the defects of inconvenience and low precision. SUMMARY

[0005] To solve the problems in the prior art, the present application provides a high-frequency sampling machine, which can realize the positioning and fixing of the sampling machine body and the vehicle without manual intervention, improve the convenience and accuracy of positioning and fixing operation.

[0006] The technical scheme for solving the problems of the present application is that the present application provides a high-frequency sampling machine, which comprises a vehicle main body, a sampling machine main body, and a mounting structure for mounting the sampling machine main body on the vehicle main body; the mounting structure comprises a supporting seat connected to the vehicle main body and a docking seat connected to the sampling machine main body, at least one docking groove is arranged on the supporting seat, at least one docking block corresponding to the docking groove is arranged on the docking seat, and the docking block is inserted into the docking groove; the present application further comprises a positioning structure, which comprises two push plates arranged at two ends of the docking block respectively; and the present application further comprises a power source, which drives the two push plates to move towards each other, so that the two push plates abut against the two ends of the docking block respectively.

[0007] Further, the high-frequency sampling machine provided by the present application can further have the following features: the positioning structure comprises a first threaded rod, a second threaded rod, and a rotating seat fixedly mounted on the vehicle main body; the first threaded rod is in transmission connection with the output end of the power source; one end of the second threaded rod is connected with the first threaded rod, and the other end is mounted on the rotating seat; the screw thread directions of the first threaded rod and the second threaded rod are opposite; the positioning structure further comprises two threaded sleeves threadedly connected with the first threaded rod and the second threaded rod respectively, and the two threaded sleeves are connected with the two push plates respectively.

[0008] Further, the high-frequency sampling machine provided by the present application can further have the following features: at least one guide piece is arranged on the threaded sleeve, and a guide groove matched with the guide piece is arranged on the supporting seat; when the power source drives the two threaded sleeves to move towards each other, the guide piece is clamped in the guide groove.

[0009] Further, the high-frequency sampling machine provided by the present application can further have the following features: the present application further comprises a fixing structure, which comprises two supporting frames arranged on the two sides of the sampling machine main body respectively, two mounting grooves are arranged on the two side surfaces of the sampling machine main body respectively, and the end portions of the supporting frames are provided with mounting heads matched with the mounting grooves.

[0010] Further, the high-frequency sampling machine provided by the present application can further have the following features: when the power source drives the two push plates to move towards each other, the power source simultaneously drives the mounting heads to move along the length direction of the supporting frames, so that the mounting heads are clamped in the mounting grooves.

[0011] Further, the high-frequency sampling machine provided by the present application can further have the following features: the power source drives the mounting head to move through a transmission structure; the first threaded rod and the second threaded rod are connected through a shaft, the transmission structure comprises a worm screw sleeved on the shaft, a worm wheel engaged with the worm screw, and a transmission rod penetrating the worm wheel; the transmission rod is perpendicular to the shaft; the fixing structure further comprises two tooth columns respectively arranged at two ends of the transmission rod, a rack arranged on the support frame and extending along the length direction of the support frame, and a plurality of fixing bases fixedly connected to the vehicle body; the tooth columns are engaged with the rack and rotatably arranged on the fixing bases; the mounting head is connected to the rack; when the power source drives the first threaded rod to rotate the shaft, the transmission rod rotates to drive the tooth columns to rotate in situ, so that the rack moves along the length direction of the support frame.

[0012] Further, the high-frequency sampling machine provided by the present application can further have the following features: the transmission structure further comprises two driving bevel gears respectively sleeved at two ends of the transmission rod, and a driven bevel gear engaged with the surface of the driving bevel gears; one side of the driven bevel gear is fixedly connected to the tooth column, and the other side is rotatably connected to another fixing base.

[0013] Further, the high-frequency sampling machine provided by the present application can further have the following features: the fixing structure further comprises a limiting structure for limiting the displacement of the rack, the limiting structure comprises a limiting groove arranged on the support frame, and a limiting block connected to the rack and slidably arranged in the limiting groove; the length direction of the limiting groove extends along the length direction of the support frame.

[0014] Further, the high-frequency sampling machine provided by the present application can further have the following features: two rollers are rotatably arranged at two ends of the abutting block, and the pushing plates abut against the rollers when the power source drives the two pushing plates to move towards each other.

[0015] Further, the high-frequency sampling machine provided by the present application can further have the following features: the fixing structure further comprises a limiting structure for limiting the displacement of the rack, the limiting structure comprises a limiting groove arranged on the support frame, and a limiting block connected to the rack and slidably arranged in the limiting groove; the length direction of the limiting groove extends along the length direction of the support frame.

[0016] The present application has the following advantages:

[0017] 1. In the present application, the abutting block is positioned in the abutting groove through the pushing plates moving towards each other, so that the positioning and fixing of the sampling machine body and the vehicle are automatically realized without manual intervention, and the convenience and accuracy of the positioning and fixing operation are improved.

[0018] 2. In this application, by inserting the mounting head into the mounting slots on both sides of the sampler body, further fixation in the direction perpendicular to the positioning structure is achieved, effectively preventing the mounting head from loosening due to vehicle bumps or sampling vibrations.

[0019] 3. In this application, the design of synchronously driving positioning and fixing actions with a single power source significantly simplifies the structure and improves installation efficiency. The power source can simultaneously drive the pushing plates to move in opposite directions to achieve docking block positioning, and drive the mounting head to snap into place to fix the main body of the sampling machine. This eliminates the need for multiple additional power sources, reducing the number and complexity of equipment components and lowering manufacturing and maintenance costs. At the same time, the single power source ensures that the positioning and fixing actions are executed synchronously, avoiding installation jams caused by coordination errors of multiple power sources. This makes the installation process of the sampling machine main body on the vehicle more seamless and significantly shortens the time required for a single installation. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the docking block and docking groove of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the protective cover of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the support base from a first perspective of the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of the support base from a second perspective of the present invention.

[0026] Figure 6 This is a schematic diagram of the internal structure of the support base from a third-view perspective of the present invention.

[0027] Figure 7 For the present invention Figure 4 A partial structural diagram of part A in the middle;

[0028] Figure 8 For the present invention Figure 5 A partial structural diagram of part B.

[0029] In the picture:

[0030] 1. Vehicle body; 2. Sampling machine body; 3. Support base; 31. Docking groove; 32. Guide groove; 4. Docking seat; 41. Docking block; 42. Mounting groove; 43. Roller; 5. Protective cover; 6. Power source; 71. First threaded rod; 72. Second threaded rod; 73. Shaft; 74. Shaft seat; 75. Rotating seat; 76. Threaded sleeve; 77. Guide component; 78. Push plate; 79. Connecting block; 81. Worm gear; 82. Worm wheel; 83. Transmission rod; 84. Driving bevel gear; 85. Driven bevel gear; 86. Fixed seat; 87. Gear column; 9. Support frame; 91. Rack; 92. Mounting head; 93. Limiting groove; 94. Limiting block. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides a high-frequency sampler, the specific structure of which is as follows:

[0033] This invention provides a high-frequency sampler, the specific structure of which is as follows:

[0034] like Figures 1 to 8 As shown, the high-frequency sampler includes a vehicle body 1, a sampler body 2, and a mounting structure for mounting the sampler body 2 onto the vehicle body 1; as Figure 1 and Figure 2 As shown, the installation structure includes a support base 3 connected to the vehicle body 1 and a docking seat 4 connected to the sampling machine body 2. The support base 3 is provided with at least one docking groove 31, and the docking seat 4 is provided with at least one docking block 41 corresponding to the docking groove 31. The docking block 41 is inserted into the docking groove 31. Figure 2 and Figure 3 As shown, the device also includes a positioning structure, comprising two pushing plates 78 respectively disposed at both ends of the docking block 41; and a power source 6, which drives the two pushing plates 78 to move towards each other, causing the two pushing plates 78 to abut against both ends of the docking block 41 respectively. The power source 6 is preferably a servo motor. In use, this application can achieve positioning of the docking block 41 within the docking groove 31 through the opposing moving pushing plates 78, automatically achieving positioning and fixing of the sampling machine body and the vehicle without manual intervention, thus improving the convenience and accuracy of positioning and fixing operations.

[0035] In some embodiments, such asFigures 3 to 5 As shown, the positioning structure includes a first threaded rod 71, a second threaded rod 72, and a rotating seat 75 fixedly mounted on the vehicle body 1; the first threaded rod 71 is connected to the output end of the power source 6; one end of the second threaded rod 72 is connected to the first threaded rod 71, and the other end is mounted on the rotating seat 75; the thread directions of the first threaded rod 71 and the second threaded rod 72 are opposite; the positioning structure also includes two threaded sleeves 76 that are respectively threaded to the first threaded rod 71 and the second threaded rod 72, and the two threaded sleeves 76 are respectively connected to two push plates 78.

[0036] In some embodiments, such as Figure 7 As shown, the threaded sleeve 76 is provided with at least one guide member 77, and the support base 3 is provided with a guide groove 32 that mates with the guide member 77; when the power source 6 drives the two threaded sleeves 76 to move towards each other, the guide member 77 is engaged in the guide groove 32. Specifically, as Figure 7 As shown, the threaded sleeve 76 is connected to the push plate 78 via the connecting block 79. The support base 3 is provided with a clearance opening for avoiding the connecting block 79. The support base 3 is provided with the guide groove 32 that communicates with the clearance opening. When the power source 6 drives the first threaded rod 71 to move, the threaded sleeve 76 and the connecting block 79 enter the clearance opening along with the movement of the first threaded rod 71 or the second threaded rod 72. The guide member 77 connected thereto is then locked in the guide groove 32.

[0037] In some embodiments, such as Figure 1 As shown, it also includes a fixing structure, which includes two support frames 9 respectively located on both sides of the sampler body 2, and two mounting slots 42 respectively located on both sides of the sampler body 2. The ends of the support frames 9 are provided with mounting heads 92 that are adapted to the mounting slots 42. In use, this application achieves further fixation in the vertical direction with respect to the positioning structure by having the mounting heads 92 respectively engage with the mounting slots 42 on both sides of the sampler body, effectively preventing the mounting heads 92 from becoming loose due to vehicle bumps or sampling vibrations.

[0038] In some embodiments, when the power source 6 drives the two push plates 78 to move towards each other, the power source 6 simultaneously drives the mounting head 92 to move along the length of the support frame 9, so that the mounting head 92 is engaged in the mounting groove 42. In use, the design that allows a single power source 6 to simultaneously drive the positioning and fixing actions greatly simplifies the structure and improves installation efficiency. Specifically, the power source 6 can simultaneously drive the push plates 78 to move towards each other to position the docking block 41, and drive the mounting head 92 to engage and fix the sampler body 2. This eliminates the need for multiple additional power sources 6, reducing the number and complexity of equipment components and lowering manufacturing and maintenance costs. At the same time, a single power source 6 ensures that the positioning and fixing actions are executed synchronously, avoiding installation delays caused by coordination errors of multiple power sources 6. This makes the installation process of the sampler body 2 on the vehicle more seamless, significantly shortening the time required for a single installation.

[0039] In some embodiments, such as Figure 1 , Figure 4 , Figure 6 and Figure 8 As shown, the power source 6 drives the mounting head 92 to move through the transmission structure; the first threaded rod 71 and the second threaded rod 72 are connected through the shaft 73. The transmission structure includes a worm 81 sleeved on the shaft 73, a worm wheel 82 meshing with the worm 81, and a transmission rod 83 passing through the worm wheel 82; the transmission rod 83 is perpendicular to the shaft 73; the fixing structure also includes two toothed columns 87 respectively located at both ends of the transmission rod 83, a rack 91 located on the support frame 9 and extending along its length, and multiple fixing seats 86 fixedly connected to the vehicle body; the toothed columns 87 mesh with the rack 91 and are rotatably mounted on a fixing seat 86; the mounting head 92 is connected to the rack 91; when the power source 6 drives the first threaded rod 71 to drive the shaft 73 to rotate, the transmission rod 83 rotates, causing the toothed columns 87 to rotate in place, so that the rack 91 moves along the length of the support frame 9.

[0040] As a further improvement to the above embodiments, such as Figure 8 As shown, the positioning structure also includes a bearing seat 74 with a shaft hole for the shaft rod 73 to pass through. The bearing seat 74 is fixedly connected to the support seat 3. The shaft rod 73 is rotatably installed in the shaft hole, and one end of the shaft rod 73 extending out of the shaft hole is connected to the first threaded rod 71 or the second threaded rod 72. The other end of the shaft rod 73 extending out of the shaft hole is located in the support seat 3 and the worm gear 81 is sleeved on it.

[0041] In some embodiments, such as Figure 4 and Figure 6 As shown, the transmission structure also includes two driving bevel gears 84 respectively sleeved on both ends of the transmission rod 83, and a driven bevel gear 85 meshing with the surface of the driving bevel gear 84; one side of the driven bevel gear 85 is fixedly connected to the gear post 87, and the other side of the driven bevel gear 85 is rotatably connected to another fixed seat 86.

[0042] In some embodiments, such as Figure 6 As shown, it also includes a limiting structure for limiting the displacement of the rack 91. The limiting structure includes a limiting groove 93 formed on the support frame 9, and a limiting block 94 connected to the rack 91 and slidably installed in the limiting groove 93. The length direction of the limiting groove 93 extends along the length direction of the support frame 9.

[0043] In some embodiments, such as Figure 2 As shown, two rollers 43 are rotatably mounted on both ends of the docking block 41. When the power source 6 drives the two pushing plates 78 to move towards each other, the pushing plates 78 abut against the rollers 43.

[0044] In some embodiments, such as Figure 1 and Figure 2 As shown, it also includes a protective cover 5 that is fixedly installed on the vehicle body to protect the power source 6.

[0045] In one specific embodiment, the process of power source 6 driving push plate 78 to move to push docking block 41 to position sampler body, and simultaneously driving mounting head 92 to move to engage it in mounting groove 42 is as follows:

[0046] On the one hand, such as Figure 4 and Figure 5 As shown, the power source 6 drives the first threaded rod 71 to rotate, and the first threaded rod 71 drives the second threaded rod 72 connected to it to rotate. Since the threads of the first threaded rod 71 and the second threaded rod 72 are in opposite directions, the threaded sleeve 76 fitted onto them undergoes relative movement; as shown... Figure 2 and Figure 7 As shown, since the threaded sleeve 76 is connected to the push plate 78, the two push plates 78 located at both ends of the docking block 41 move relative to each other and push the docking block 41 to position it. At the same time, the guide 77 connected to the threaded sleeve 76 is engaged in the guide groove 32 of the support base 3, thus completing the positioning structure for positioning the sampler body.

[0047] On the other hand, such as Figure 4 and Figure 8 As shown, the rotation of the first threaded rod 71 also drives the rotation of the shaft 73 connected to it, the rotation of the shaft 73 drives the rotation of the worm 81 sleeved on it, the rotation of the worm 81 drives the rotation of the worm wheel 82 meshing with it, and the worm wheel 82 drives the transmission rod 83 to rotate; as Figure 4 and Figure 6As shown, the rotation of the transmission rod 83 causes the active bevel gear 84 mounted on it to rotate, which in turn causes the driven bevel gear 85 connected to it to rotate, further causing the gear column 87 to rotate. Since the gear column 87 is restricted by the fixed seat 86 to rotate in place, the rack 91 meshing with it moves along its setting direction until the mounting head 92 connected to the end of the rack 91 is engaged in the mounting groove 42, thus completing the fixing of the sampling machine body by the fixing structure.

[0048] The above-described contents can be implemented individually or in various combinations, and these variations are all within the protection scope of this invention.

[0049] In the description of this invention, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0050] In the description of this invention, it should also be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In the description of this invention, unless otherwise stated, "a number" means two or more.

[0051] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered within the scope of protection of the present invention.

Claims

1. A high-frequency sampler, characterized in that, The system includes a vehicle body (1), a sampling machine body (2), and an installation structure for mounting the sampling machine body (2) onto the vehicle body (1). The installation structure includes a support base (3) connected to the vehicle body (1) and a docking seat (4) connected to the sampling machine body (2). The support base (3) is provided with at least one docking groove (31), and the docking seat (4) is provided with at least one docking block (41) corresponding to the docking groove (31). The docking block (41) is inserted into the docking groove (31). The system also includes a positioning structure, which includes two push plates (78) respectively located at both ends of the docking block (41). The system also includes a power source (6), which drives the two push plates (78) to move toward each other, so that the two push plates (78) respectively abut against both ends of the docking block (41).

2. The high-frequency sampler according to claim 1, characterized in that, The positioning structure includes a first threaded rod (71), a second threaded rod (72), and a rotating seat (75) fixedly mounted on the vehicle body (1); the first threaded rod (71) is connected to the output end of the power source (6); one end of the second threaded rod (72) is connected to the first threaded rod (71), and the other end is mounted on the rotating seat (75); the thread directions of the first threaded rod (71) and the second threaded rod (72) are opposite; the positioning structure also includes two threaded sleeves (76) respectively threaded to the first threaded rod (71) and the second threaded rod (72), and the two threaded sleeves (76) are respectively connected to the two push plates (78).

3. The high-frequency sampler according to claim 2, characterized in that, The threaded sleeve (76) is provided with at least one guide (77), and the support base (3) is provided with a guide groove (32) that cooperates with the guide (77); when the power source (6) drives the two threaded sleeves (76) to move towards each other, the guide (77) is engaged in the guide groove (32).

4. The high-frequency sampler according to claim 2, characterized in that, It also includes a fixing structure, which includes two support frames (9) respectively located on both sides of the sampler body (2), two mounting slots (42) respectively located on both sides of the sampler body (2), and the end of the support frame (9) is provided with a mounting head (92) adapted to the mounting slot (42).

5. The high-frequency sampler according to claim 4, characterized in that, When the power source (6) drives the two push plates (78) to move toward each other, the power source (6) simultaneously drives the mounting head (92) to move along the length direction of the support frame (9), so that the mounting head (92) is engaged in the mounting groove (42).

6. The high-frequency sampler according to claim 4, characterized in that, The power source (6) drives the mounting head (92) to move through the transmission structure; the first threaded rod (71) and the second threaded rod (72) are connected by a shaft (73), the transmission structure includes a worm gear (81) sleeved on the shaft (73), a worm wheel (82) meshing with the worm gear (81), and a transmission rod (83) passing through the worm wheel (82); the transmission rod (83) is perpendicular to the shaft (73); the fixing structure also includes two gear posts (87) respectively located at both ends of the transmission rod (83), and located on the support A rack (91) extends along the length of the support frame (9), and a plurality of fixed seats (86) are fixedly connected to the vehicle body; the pinion (87) meshes with the rack (91) and is rotatably mounted on one of the fixed seats (86); the mounting head (92) is connected to the rack (91); when the power source (6) drives the first threaded rod (71) to drive the shaft (73) to rotate, the transmission rod (83) rotates and drives the pinion (87) to rotate in place, so that the rack (91) moves along the length of the support frame (9).

7. The high-frequency sampler according to claim 6, characterized in that, The transmission structure also includes two driving bevel gears (84) respectively sleeved on both ends of the transmission rod (83), and a driven bevel gear (85) meshing with the surface of the driving bevel gear (84); one side of the driven bevel gear (85) is fixedly connected to the tooth column (87), and the other side is rotatably connected to another fixed seat (86).

8. The high-frequency sampler according to claim 6, characterized in that, It also includes a limiting structure for limiting the displacement of the rack (91), the limiting structure including a limiting groove (93) opened on the support frame (9), and a limiting block (94) connected to the rack (91) and slidably installed in the limiting groove (93); the length direction of the limiting groove (93) extends along the length direction of the support frame (9).

9. The high-frequency sampler according to claim 1, characterized in that, Two rollers (43) are rotatably mounted on both ends of the docking block (41). When the power source (6) drives the two pushing plates (78) to move towards each other, the pushing plates (78) abut against the rollers (43).

10. The high-frequency sampler according to claim 1, characterized in that, It also includes a protective cover (5) that is fixedly installed on the vehicle body to protect the power source (6).

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