Wind erosion wind tunnel sand collecting structure

Abstract

The utility model relates to the technical field of wind erosion sand collection, in particular to a wind erosion wind tunnel sand collection structure which comprises a mounting case, a mounting base is fixedly connected to the bottom of the mounting case, an abutting rotating cover is rotatably connected to the upper end face of the mounting case, and two sand collection boxes are fixedly connected to the upper end face of the abutting rotating cover. A sand inlet is formed in the sand collecting box, sand can conveniently enter the sand collecting box through the sand inlet, a separation plate for preventing the sand from leaking out is fixedly connected to the interior of the sand collecting box, and a flow guide plate for changing the direction of the sand collecting box through the wind direction is fixedly connected to the outer wall of the sand collecting box; a reset mechanism capable of resetting the abutting rotating cover is mounted in the mounting case, a fixing mechanism capable of limiting the abutting rotating cover is further fixedly mounted on the outer wall of the mounting case, and the sand collecting box can be reset.

Description

Technical Field

[0001] The utility model relates to the technical field of wind erosion sand collection, and more specifically to a wind erosion wind tunnel sand collection structure. Background Art

[0002] The wind tunnel test of wind and sand environment is a large-scale instrument designed to simulate the phenomenon of wind and sand in the wild. The wind tunnel of wind and sand environment is generally divided into a power system, a steady flow section, a contraction section, a test section and a diffusion section. In the simulation experiment of wind and sand phenomenon, the wind speed is continuously changed in the range of 2 m / s to 40 m / s, and the wind speed is controlled by the manual transmission. In scientific experimental activities, the determination of sand flux is an important physical quantity for studying the mechanism of wind and sand take-off, conducting research on wind and sand flow and engineering calculations. However, in the experimental research of observing the movement of wind and sand in the sand wind tunnel, there is such a problem. In the traditional sand collection equipment, when the wind becomes smaller, the sand inlet cannot be aligned with the relative direction of the wind tunnel, and the position and direction of the sand collection port cannot be adjusted and fixed.

[0003] After searching, it was found that the prior art publication number was CN104122064A, which disclosed a wind tunnel soil erosion collector, which was composed of a dust collection chamber, a dust collection funnel, a sand collecting bottle and an electronic balance. A sand inlet was opened in front of the dust collection chamber, and the airflow generated by the fan would bring all the erosion samples of the test section 500 mm in front of the dust collection chamber into the sand inlet and be retained in the dust collection funnel. After a period of erosion, the fan was turned off and the funnel valve was opened, and the dust in the dust collection funnel flowed into the sand collecting bottle below, which was placed on an electronic balance for weighing. The invention has a simple structure, reasonable design, convenient operation, strong practicality and low cost, and solves the problem of being able to collect all the dust erosion within a range of 30 cm above the ground in the wind and sand flow field. The large-diameter sand inlet solved the problem of error in the sand transport volume at a certain wind speed, ensured the accurate value of the sand flux at a certain wind speed, and provided reliable experimental conditions for studying the characteristics of wind and sand movement under certain wind speed conditions.

[0004] Therefore, in traditional sand collecting equipment, when the wind becomes smaller, the sand inlet cannot be aligned with the relative direction of the wind tunnel, and the position and direction of the sand collecting port cannot be adjusted and fixed, and it has limitations. In order to solve the problem that the sand inlet cannot be aligned with the relative direction of the wind tunnel and the position and direction of the sand collecting port cannot be adjusted and fixed in traditional sand collecting equipment, we propose a wind erosion wind tunnel sand collecting structure. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a wind erosion wind tunnel sand collecting structure, which solves the problem of background.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A wind erosion wind tunnel sand collecting structure, comprising a mounting chassis, a mounting base fixedly connected to the bottom of the mounting chassis, a rotating cover rotatably connected to the upper end surface of the mounting chassis, two sets of sand collecting boxes fixedly connected to the upper end surface of the rotating cover, a sand inlet opening is provided in the sand collecting box to facilitate sand to enter the sand collecting box through the sand inlet opening, and an isolation plate is fixedly connected to the inside of the sand collecting box to prevent sand from leaking out;

[0008] The outer wall of the sand collecting box is fixedly connected with a guide plate for changing the direction of the sand collecting box according to the wind direction, the interior of the mounting chassis is provided with a reset mechanism for resetting the abutting rotating cover, and the outer wall of the mounting chassis is also fixedly provided with a fixing mechanism for limiting the abutting rotating cover.

[0009] As a further embodiment of the present invention, the fixing mechanism includes a fixed ring, which is fixedly mounted on the outer wall of the mounting chassis, the upper end surface of the fixed ring is connected to a rotating ring by rotational force, the outer wall of the fixed ring is provided with a plurality of rectangular grooves, and the outer wall of the rotating ring is provided with a plurality of curved grooves.

[0010] As a further feature of the present invention, a sliding rod is slidably connected between the rectangular sliding groove and the curved arc groove, an end of the sliding rod close to the abutting rotating cover is fixedly connected to an elastic contraction arm, an end of the elastic contraction arm away from the sliding rod is fixedly connected to an abutting fork block, and a rotating handle is fixedly connected to the upper end surface of the rotating ring.

[0011] As a further feature of the present invention, a plurality of first abutment blocks are fixedly connected to the bottom of the rotating ring, and the plurality of first abutment blocks are distributed in a circle, and a limiting slider with a reset function is fixedly connected inside the fixed ring.

[0012] As a further feature of the present invention, a second abutment block is fixedly connected to the upper end surface of the limit slider, an outer wall of the second abutment block abuts against a corresponding group of first abutment blocks, and a pulling handle is fixedly connected to the bottom of the limit slider.

[0013] As a further embodiment of the present invention, the reset mechanism includes a reset torsion spring, which is fixedly installed inside the installation chassis. A clamping groove is provided inside the reset torsion spring. Two groups of clamping circular ring blocks are fixedly connected to the bottom of the abutting rotating cover, and the two groups of clamping circular ring blocks are symmetrically distributed. The clamping groove is clamped between the two groups of clamping circular ring blocks.

[0014] Beneficial Effects

[0015] The utility model provides a wind erosion wind tunnel sand collection structure. Compared with the prior art, it has the following beneficial effects:

[0016] 1. When the guide plate drives the sand collecting box and the abutting rotating cover to rotate, the abutting rotating cover drives the two sets of clamping circular ring blocks to rotate, and the clamping circular ring blocks drive the reset torsion springs to store force and rotate through the clamping grooves. When the wind force becomes smaller, the reset torsion springs release the stored force and drive the two sets of clamping circular ring blocks to reset and rotate through the clamping grooves. The clamping circular ring blocks drive the sand collecting box to reset and rotate, so that the sand inlet of the sand collecting box is always aligned with the direction of the wind tunnel.

[0017] 2. When it is necessary to change the direction of the sand inlet of the sand collecting box, you only need to rotate the sand collecting box. When the sand collecting box is rotated to a suitable position, rotate the rotating ring. Since the arc groove is in an arc shape, the rotating ring can drive the sliding rod to move through the arc groove, and the rectangular sliding groove limits the moving direction of the sliding rod, so that all the sliding rods will move toward the direction of the abutting rotating cover, and the sand collecting box is limited by the rotating cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main structure front view of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the chassis for installing the main body of the utility model;

[0020] Figure 3 This is a schematic diagram of the position structure of the main body pulling handle of the utility model;

[0021] Figure 4 This is a schematic diagram of the main body reset twist structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the main body sandbox of the utility model.

[0023] In the figure: 1. Install the chassis; 2. Fix the bolts; 3. Install the base; 4. Abut the rotating cover; 5. Isolation plate; 6. Snap-on groove; 7. Guide plate; 8. Sand collecting box; 9. Abut the fork block; 10. Elastic retractable arm; 11. Sliding rod; 12. Rotating ring; 13. Arc groove; 14. Fixed ring; 15. Rectangular slide groove; 16. Rotating handle; 17. First abutment block; 18. Limiting slider; 19. Pull handle; 20. Second abutment block; 21. Snap-on ring block; 22. Reset torsion spring; 101. Fixing mechanism; 201. Reset mechanism. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] Example 1: Please refer to Figure 1-5 As shown, the utility model provides a technical solution: a wind erosion wind tunnel sand collecting structure, comprising an installation case 1, a mounting base 3 is fixedly connected to the bottom of the installation case 1, a plurality of fixing bolts 2 are threadedly connected to the inside of the installation base 3, and the installation case 1 can be fixed to the ground by the fixing bolts 2, so as to enhance the stability of the installation base 3 and prevent it from being blown down by the wind. The upper end surface of the installation case 1 is rotatably connected to an abutting rotating cover 4, and the upper end surface of the abutting rotating cover 4 is fixedly connected to two groups of sand collecting boxes 8, and the two groups of sand collecting boxes 8 are connected to each other. The sand collecting box 8 is provided with a sand inlet, so that sand can enter the sand collecting box 8 through the sand inlet. The sand collecting box 8 is fixedly connected to an isolation plate 5 to prevent sand from leaking out, and the outer wall of the sand collecting box 8 is fixedly connected to a guide plate 7 for changing the direction of the sand collecting box 8 according to the wind direction. A reset mechanism 201 capable of resetting the abutting rotating cover 4 is installed inside the installation case 1, and a fixing mechanism 101 capable of limiting the abutting rotating cover 4 is also fixedly installed on the outer wall of the installation case 1.

[0026] Example 2: Please refer to Figure 2 , 3 4, the fixing mechanism 101 includes a fixing ring 14, the fixing ring 14 is fixedly mounted on the outer wall of the mounting chassis 1, the upper end surface of the fixing ring 14 is connected to the rotating ring 12 by rotational force, the outer wall of the fixing ring 14 is provided with a plurality of rectangular slide grooves 15, the outer wall of the rotating ring 12 is provided with a plurality of curved grooves 13, and the plurality of rectangular slide grooves 15 and the curved grooves 13 are all distributed in a circle, and each group of curved grooves 13 corresponds to a group of curved grooves 13 above, a sliding rod 11 is slidably connected between the rectangular slide grooves 15 and the curved grooves 13, and an elastic spring is fixedly connected to the end of the sliding rod 11 close to the rotating cover 4. The elastic contraction arm 10 is fixedly connected with an abutment fork block 9 at one end away from the sliding rod 11, and the outer wall of the abutment fork block 9 is in an arc shape, and the arc shape can better abut against the outer wall of the abutment rotating cover 4, and the abutment rotating cover 4 and the outer wall of the abutment fork block 9 are fixedly connected with rubber sleeves. When the rubber sleeves between the abutment fork block 9 and the abutment rotating cover 4 abut against each other, the friction between the abutment fork block 9 and the abutment rotating cover 4 can be better enhanced. The upper end surface of the rotating ring 12 is fixedly connected with a rotating handle 16, and the rotating handle 16 can better help the staff to rotate the rotating ring 12.

[0027] See also Figure 2 , 3As shown, a plurality of first abutment blocks 17 are fixedly connected to the bottom of the rotating ring 12, and the plurality of first abutment blocks 17 are distributed in a circle, and a limit slider 18 with a reset function is fixedly connected inside the fixed ring 14. Specifically, an installation cavity is opened inside the fixed ring 14, and the limit slider 18 is slidably installed inside the installation cavity, and a reset spring is installed between the limit slider 18 and the installation cavity, and the reset spring can help the limit slider 18 to reset better, and a second abutment block 20 is fixedly connected to the upper end surface of the limit slider 18, and the outer wall of the second abutment block 20 abuts against a corresponding group of first abutment blocks 17, and a pulling handle 19 is also fixedly connected to the bottom of the limit slider 18.

[0028] See also Figure 3 , 4 As shown, the reset mechanism 201 includes a reset torsion spring 22, which is fixedly installed inside the mounting chassis 1. A clamping groove 6 is provided inside the reset torsion spring 22. Two groups of clamping circular ring blocks 21 are fixedly connected to the bottom of the abutting rotating cover 4, and the two groups of clamping circular ring blocks 21 are symmetrically distributed. The clamping groove 6 is clamped between the two groups of clamping circular ring blocks 21. The reset torsion spring 22 can reset the two groups of clamping circular ring blocks 21 through the clamping groove 6, and can limit the abutting rotating cover 4 through the clamping circular ring blocks 21.

[0029] Working principle: The mounting base 3 is fixed on the ground by the fixing bolts 2, and the mounting chassis 1 is limited by the mounting base 3, and the sand inlet of the sand collecting box 8 is aligned with the blowing direction of the wind. When the sand enters the sand collecting box 8, in order to prevent the sand from flowing out, an isolation plate 5 is provided, and the direction of the sand inlet of the sand collecting box 8 is changed by the guide plate 7, so that the inlet is always aligned with the wind direction;

[0030] When the guide plate 7 drives the sand collecting box 8 and the abutting rotating cover 4 to rotate, the abutting rotating cover 4 drives the two groups of clamping annular blocks 21 to rotate, and the clamping annular blocks 21 drive the reset torsion spring 22 to store force and rotate through the clamping groove 6, and when the wind force becomes smaller, the reset torsion spring 22 releases the stored force and drives the two groups of clamping annular blocks 21 to reset and rotate through the clamping groove 6, and the clamping annular block 21 drives the sand collecting box 8 to reset and rotate, so that the sand inlet of the sand collecting box 8 is always aligned with the direction of the wind tunnel;

[0031] When it is necessary to change the direction of the sand inlet of the sand collecting box 8, it is only necessary to rotate the sand collecting box 8. When the sand collecting box 8 is rotated to a suitable position, the rotating ring 12 is rotated. Since the curved arc groove 13 is in the shape of a curved arc, the rotating ring 12 can drive the sliding rod 11 to move through the curved arc groove 13, and the rectangular slide groove 15 limits the moving direction of the sliding rod 11, so that all the sliding rods 11 will move toward the direction of the abutting rotating cover 4, and the sand collecting box 8 is limited by abutting the rotating cover 4. When the rotating ring 12 rotates, the first abutting block 17 abuts against the second abutting block 20, and the second abutting block 20 drives the limiting slider 18 to move downward When the abutment fork block 9 abuts against the outer wall of the abutment rotating cover 4, the outer wall of the first abutment block 17 is clamped with the outer wall of the second abutment block 20, and the rotating ring 12 can be limited by the first abutment block 17, so that the abutment fork block 9 is tightly abutted against the outer wall of the abutment rotating cover 4. When it is necessary to release the limit of the abutment rotating cover 4, it is only necessary to pull the limiting slider 18, and the pulling handle 19 drives the second abutment block 20 to break away from the abutment with the first abutment block 17 through the limiting slider 18, so that the rotating ring 12 can be contacted and limited, and then according to the above working principle, the abutment fork block 9 is separated from the abutment with the abutment rotating cover 4, and the sand collecting box 8 can be rotated at will.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind erosion wind tunnel sand collection structure, comprising a mounting box (1), characterized in that: The bottom of the installation case (1) is fixedly connected to a mounting base (3); the upper end surface of the installation case (1) is rotatably connected to a contact rotating cover (4); the upper end surface of the contact rotating cover (4) is fixedly connected to two groups of sand collecting boxes (8); the sand collecting boxes (8) are provided with sand inlets to facilitate sand to enter the sand collecting boxes (8) through the sand inlets; the inside of the sand collecting boxes (8) is fixedly connected to an isolation plate (5) to prevent sand from leaking out; The outer wall of the sand collecting box (8) is fixedly connected with a guide plate (7) for changing the direction of the sand collecting box (8) according to the wind direction; a reset mechanism (201) capable of resetting the abutting rotating cover (4) is installed inside the installation case (1); and a fixing mechanism (101) capable of limiting the position of the abutting rotating cover (4) is also fixedly installed on the outer wall of the installation case (1).

2. A wind erosion wind tunnel sand collection structure according to claim 1, characterized in that: The fixing mechanism (101) comprises a fixing ring (14), the fixing ring (14) being fixedly mounted on the outer wall of the mounting case (1), the upper end surface of the fixing ring (14) being rotationally connected to the rotating ring (12), the outer wall of the fixing ring (14) being provided with a plurality of rectangular sliding grooves (15), and the outer wall of the rotating ring (12) being provided with a plurality of curved arc grooves (13).

3. A wind erosion wind tunnel sand collection structure according to claim 2, characterized in that: A sliding rod (11) is slidably connected between the rectangular sliding groove (15) and the curved groove (13); an end of the sliding rod (11) close to the abutting rotating cover (4) is fixedly connected to an elastic contraction arm (10); an end of the elastic contraction arm (10) away from the sliding rod (11) is fixedly connected to an abutting fork block (9); and a rotating handle (16) is fixedly connected to the upper end surface of the rotating ring (12).

4. A wind erosion wind tunnel sand collection structure according to claim 3, characterized in that: A plurality of first abutment blocks (17) are fixedly connected to the bottom of the rotating circular ring (12), and the plurality of first abutment blocks (17) are distributed in a circumferential manner. A limiting sliding block (18) with a reset function is fixedly connected inside the fixed circular ring (14).

5. A wind erosion wind tunnel sand collection structure according to claim 4, characterized in that: The upper end surface of the limit slider (18) is fixedly connected to a second abutment block (20), the outer wall of the second abutment block (20) abuts against a corresponding group of first abutment blocks (17), and the bottom of the limit slider (18) is also fixedly connected to a pulling handle (19).

6. A wind erosion wind tunnel sand collection structure according to claim 1, characterized in that: The reset mechanism (201) comprises a reset torsion spring (22), the reset torsion spring (22) is fixedly mounted inside the mounting case (1), a clamping groove (6) is arranged inside the reset torsion spring (22), two groups of clamping circular blocks (21) are fixedly connected to the bottom of the abutting rotating cover (4), and the two groups of clamping circular blocks (21) are symmetrically distributed, and the clamping groove (6) is clamped between the two groups of clamping circular blocks (21).

Images