A sampling device suitable for use in frozen soil

Abstract

The utility model discloses a kind of sampling device suitable for frozen soil. The device includes chassis, the middle part of chassis is fixed with connecting seat, connecting seat inner bearing is connected with shaft sleeve, shaft sleeve inner sliding connection has connecting rod, the upper end outside of shaft sleeve is connected with rotating control mechanism, the upper end bearing of connecting rod is connected on slide, the upside of chassis is fixed with vertical plate, the slide is slidingly connected on vertical plate, and the slide is connected with lifting control mechanism, the lower end of connecting rod is fixed with sampling rod, and the lower end of sampling rod is equipped with soil-breaking tooth. The utility model drives shaft sleeve to rotate by setting rotating control mechanism, to drive sampling rod in the lower end of connecting rod to rotate, and drive slide to move up and down by setting lifting control mechanism, to drive connecting rod and sampling rod to move up and down, to realize the independent control of sampling rod rotation and moving up and down, the rotating speed and downward speed of sampling rod can be controlled according to soil hardness condition, satisfy the soil sampling demand of various hardness.

Description

Technical Field

[0001] This utility model relates to the technical field of soil sampling devices, specifically to a sampling device suitable for frozen soil. Background Technology

[0002] Soil testing is a crucial step in analyzing the physical, chemical, and biological properties of soil, as well as the content of pollutants, using specialized technical methods to provide scientific evidence for agricultural production, ecological restoration, and engineering construction. Soil sampling is the first step in soil testing, traditionally done manually by digging, which is time-consuming and labor-intensive due to the large number of sampling points. With technological advancements, drilling-type sampling devices have become more widely used. For example, the utility model patent with patent number ZL202421361557.3 uses a motor to drive a sampling rod. As the rod rotates, it uses soil-breaking teeth at the lower end to break up the soil. While using a single motor saves cost and reduces weight, it was found that the downward speed of the sampling tube is directly proportional to its rotation speed. In harder soil conditions, such as frozen soil, the rotation speed is insufficient to meet the soil-breaking requirements, causing the base to wobble and shift. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a sampling device suitable for frozen soil.

[0004] To achieve the above objectives, this utility model provides a sampling device suitable for frozen soil, including a base frame, a connecting seat fixed in the middle of the base frame, a bushing connected to the connecting seat by a bearing, a connecting rod slidably connected inside the bushing, the outer side of the upper end of the bushing being connected to a rotation control mechanism, the upper end of the connecting rod being connected to a slide block by a bearing, a vertical plate fixed on the upper side of the base frame, the slide block being slidably connected to the vertical plate, the slide block being connected to a lifting control mechanism, a sampling rod fixed at the lower end of the connecting rod, and soil-breaking teeth provided at the lower end of the sampling rod.

[0005] Furthermore, the rotation control mechanism includes a first gear fixed to the outer side of the upper end of the bushing and a second gear meshing with the first gear, the second gear being fixedly connected to the rotating shaft of the rotary motor.

[0006] Furthermore, a support is fixed to the upper side of the base frame. The support is in the shape of an inverted n. The rotary motor is fixed to the upper side of the support, and the second gear is disposed on the lower side of the support.

[0007] Furthermore, the lifting control mechanism includes a slide rail fixed to the side of the upright plate and a slider slidably connected to the slide rail. The slider is fixed on a slide block. A lead screw is connected to the upright plate by a bearing. A threaded sleeve connected to the lead screw is fixed on the slide block. The lead screw is driven by the lifting motor.

[0008] Furthermore, a first synchronous pulley is fixed to the upper end of the lead screw, and a second synchronous pulley is fixed to the shaft of the lifting motor. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

[0009] Furthermore, a support plate is fixed to the upper end of the upright plate on the side away from the slide, and the lifting motor is fixed to the support plate.

[0010] Furthermore, the base frame includes a lower support plate, a plurality of support columns fixed on the upper side of the lower support plate, and an upper support plate fixed on the upper end of the plurality of support columns. The lower support plate is provided with a clearance hole for the sampling rod to pass through.

[0011] Furthermore, a control box is fixed to the upper side of the lower support plate, and the control box is connected to the rotation control mechanism and the lifting control mechanism respectively.

[0012] Furthermore, an upper cover is fixed to the upper side of the upper support plate.

[0013] Beneficial effects: This utility model connects a bushing with a bearing inside the connecting seat, and simultaneously sets the connecting rod inside the bushing. The upper end of the connecting rod is connected to the slide with a bearing. A rotation control mechanism is set to drive the bushing to rotate, thereby driving the sampling rod at the lower end of the connecting rod to rotate together. A lifting control mechanism is set to drive the slide to move up and down, thereby driving the connecting rod and the sampling rod to move up and down. This enables independent control of the rotation and up and down movement of the sampling rod. The rotation speed and downward speed of the sampling rod can be controlled according to the soil hardness, meeting the sampling needs of soils with various hardnesses. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a sampling device for frozen soil according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a sampling device for frozen soil according to an embodiment of the present invention; Figure 3 This is a structural schematic diagram of the lifting control mechanism according to an embodiment of the present utility model. Detailed Implementation

[0015] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0016] like Figures 1 to 3 As shown, this utility model embodiment provides a sampling device suitable for frozen soil, including a base frame 1. Specifically, the base frame 1 includes a lower support plate 101, multiple support columns 102, and an upper support plate 103. The multiple support columns 102 are fixed to the upper side of the lower support plate 101, and the upper support plate 103 is fixed to the upper end of the multiple support columns 102. A connecting seat 2 is fixed in the middle of the upper support plate 103. A bushing 3 is connected to the connecting seat 2 by a bearing. The bushing 3 can rotate freely relative to the connecting seat 2. A connecting rod 4 is slidably connected in the bushing 3. The connecting rod 4 can move up and down in the bushing 3 and can rotate with the bushing 3. Limiting structures can be set on the outer side of the connecting rod 4 and the inner side of the bushing 3 to prevent the connecting rod 4 from rotating relative to the bushing 3. For example, a sliding groove can be set on the outer side of the connecting rod 4, and a slider that cooperates with the sliding groove can be set in the bushing 3. A through hole is set on the upper support plate 103 at a position corresponding to the connecting seat 2. The bushing 3 and the connecting rod 4 are both arranged to pass through the through hole. The upper outer side of the bushing 3 is connected to the rotation control mechanism, which drives the bushing 3 to rotate. The upper end of the connecting rod 4 is connected to the slide 5 by a bearing, allowing it to rotate freely relative to the slide 5. A vertical plate 6 is fixed on the upper side of the upper support plate 103, and the slide 5 is slidably connected to the vertical plate 6. The slide 5 is connected to the lifting control mechanism, which controls the slide 5 to move up and down relative to the vertical plate 6, thereby driving the connecting rod 4 to move up and down. A sampling rod 7 is fixed at the lower end of the connecting rod 4. The sampling rod 7 is a tubular structure with a closed upper end and an open lower end. A soil-breaking tooth 8 is provided at the lower end of the sampling rod 7, which has a soil-breaking effect when rotating with the sampling rod 8. An avoidance hole 9 is provided on the lower support plate 101 for the sampling rod 7 to pass through, allowing the sampling rod 7 to sample the soil on the lower side.

[0017] The rotation control mechanism of this embodiment includes a first gear 10 fixed to the outer side of the upper end of the bushing 3 and a second gear 11 meshing with the first gear 10. The second gear 11 is fixedly connected to the shaft of the rotary motor 12. A support 13 is fixed on the upper side of the base frame 1. The support 13 is in an inverted n-shape. The rotary motor 12 is fixed on the upper side of the support 13. A through hole is provided in the middle of the support 13. The shaft of the rotary motor 12 can be disposed on the lower side of the support 13 through the through hole. The second gear 11 is disposed on the lower side of the support 13.

[0018] The lifting control mechanism of this embodiment includes a slide rail 14 fixed to the side of the upright plate 6 and a slider 15 slidably connected to the slide rail 14. The slider 15 is fixed on the slide base 5. A lead screw 16 is bearing-connected to the upright plate 6, and a threaded sleeve 17 threadedly connected to the lead screw 16 is fixed on the slide base 5. The lead screw 16 is driven by a lifting motor 18. When the lifting motor 18 rotates, it drives the lead screw 16 to rotate. Under the action of the threaded sleeve 17, the slide rail 14, and the slider 15, the slide base 5 is moved. Preferably, a first synchronous pulley 19 is fixed to the upper end of the lead screw 16, and a second synchronous pulley 20 is fixed to the shaft of the lifting motor 18. The first synchronous pulley 19 and the second synchronous pulley 20 are connected by a synchronous belt 21. To facilitate the fixing of the lifting motor 18, a support plate 22 can be fixed to the upper end of the upright plate 6 away from the slide base 5, and the lifting motor 18 is fixed to the support plate 22.

[0019] A control box 23 is fixed to the upper side of the lower support plate 101. The control box 23 is connected to the rotary motor 12 of the rotation control mechanism and the lifting motor 18 of the lifting control mechanism, respectively, thereby controlling the operation of the rotary motor 12 and the lifting motor 18. The control box 23 can obtain power through an external power supply or by installing a battery. An upper cover 24 can also be fixed to the upper side of the upper support plate 103. The aforementioned rotation control mechanism and lifting control mechanism are both housed within the upper cover 24, improving safety. Operating buttons can also be provided on the control box 23 or the upper cover 24 to control the start and stop of the rotary motor 12 and the lifting motor 18. In addition, the base frame of this device can be mounted on a trolley or a traveling mechanism, thereby facilitating its movement to the sampling location.

[0020] The above description is merely a preferred embodiment of this utility model. It should be noted that for those skilled in the art, other parts not specifically described are existing technology or common knowledge. Several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A sampling device suitable for frozen soil, characterized in that, The device includes a base frame, a connecting seat fixed in the middle of the base frame, a bushing connected to the connecting seat by a bearing, a connecting rod slidably connected inside the bushing, the outer upper end of the bushing connected to a rotation control mechanism, the upper end of the connecting rod connected to a slide block by a bearing, a vertical plate fixed on the upper side of the base frame, the slide block slidably connected to the vertical plate, the slide block connected to a lifting control mechanism, and a sampling rod fixed to the lower end of the connecting rod, the lower end of the sampling rod having soil-breaking teeth.

2. The sampling device for frozen soil according to claim 1, characterized in that, The rotation control mechanism includes a first gear fixed to the outer side of the upper end of the bushing and a second gear meshing with the first gear. The second gear is fixedly connected to the rotating shaft of the rotary motor.

3. A sampling device suitable for frozen soil according to claim 2, characterized in that, A support is fixed to the upper side of the base frame. The support is in the shape of an inverted n. The rotary motor is fixed to the upper side of the support, and the second gear is located on the lower side of the support.

4. A sampling device suitable for frozen soil according to claim 1, characterized in that, The lifting control mechanism includes a slide rail fixed to the side of the upright plate and a slider slidably connected to the slide rail. The slider is fixed on a slide block. A lead screw is connected to the bearing on the upright plate. A threaded sleeve connected to the lead screw is fixed on the slide block. The lead screw is driven by the lifting motor.

5. A sampling device suitable for frozen soil according to claim 4, characterized in that, The upper end of the lead screw is fixed with a first synchronous pulley, and the shaft of the lifting motor is fixed with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

6. A sampling device suitable for frozen soil according to claim 4, characterized in that, A support plate is fixed to the upper end of the upright plate on the side away from the slide, and the lifting motor is fixed to the support plate.

7. A sampling device suitable for frozen soil according to claim 1, characterized in that, The base frame includes a lower support plate, multiple support columns fixed to the upper side of the lower support plate, and an upper support plate fixed to the upper end of the multiple support columns. The lower support plate is provided with a clearance hole for the sampling rod to pass through.

8. A sampling device suitable for frozen soil according to claim 7, characterized in that, A control box is fixed to the upper side of the lower support plate, and the control box is connected to the rotation control mechanism and the lifting control mechanism respectively.

9. A sampling device suitable for frozen soil according to claim 7, characterized in that, An upper cover is fixed to the upper side of the upper support plate.

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