An ecological fragile area vegetation substrate performance testing device and method

Abstract

The application discloses an ecological fragile area vegetation substrate performance testing device and method, and belongs to the technical field of material detection. The device solves the problem of loose soil samples during soil detection. The testing device comprises a frame assembly, a pressing unit and a supporting structure. The vegetation substrate in the container is compacted by the pressing assembly in the pressing unit, thereby ensuring the quality of the vegetation substrate sample. The pressing assembly comprises a rotating cylinder, a fixed cylinder and a pressing head. A spiral groove is arranged on the rotating cylinder. A guide column is arranged on the side wall of the container containing the vegetation substrate. The rotating cylinder, the fixed cylinder and the pressing head are driven to rotate by the cooperation of the guide column and the spiral groove, so as to compact the vegetation substrate while moving downward. The supporting structure comprises a supporting rod and a supporting plate. The supporting plate is moved and supported on the side wall of the container by the rotation of the supporting rod, thereby ensuring the stability of the container, so that the pressing assembly can compact the vegetation substrate in the container, and the quality of the vegetation substrate is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of material detection, and in particular relates to a device and method for testing the performance of a plant-growing substrate in an ecologically fragile region. BACKGROUND

[0002] An ecologically fragile region is an area with poor ecological carrying capacity and a dry climate that affects the survival rate of vegetation. In such a region, vegetation is greatly affected by the environment, and in harsh environments, vegetation is prone to death, leading to soil exposure, which in turn leads to a harsh environment in the region. Therefore, when planting vegetation in an ecologically fragile region, a substrate layer needs to be laid in the region. The substrate layer is beneficial to the survival and growth of vegetation, thus benefiting the greening work in the ecologically fragile region. Therefore, the substrate is widely used in ecologically fragile regions, and research on the substrate has become a hot direction in the field.

[0003] Currently, scholars are keen on researching plant-growing substrates in ecologically fragile regions. The prepared substrates are beneficial to the survival and growth of vegetation when laid in ecologically fragile regions. Therefore, the performance of the plant-growing substrate is particularly important, and the performance of the plant-growing substrate needs to be tested before use to determine whether it meets the needs of vegetation growth.

[0004] There are many types of devices for testing the performance of plant-growing substrates in the prior art. For example, Chinese Invention Patent CN118641315A discloses a sample preparation device for soil testing and a soil sample permeation testing method. The device includes a container, a soil filling head, and an adjusting assembly. The soil sample is placed in the container, and the container is placed on a bearing table. The soil filling head is vertically arranged in the container and has a discharge groove at the lower end. The adjusting assembly is rotationally arranged in the soil filling head and is connected to the soil filling head. When the soil filling head moves vertically downward, the air in the container is discharged through the discharge groove. When the adjusting assembly is inserted into the discharge groove, the soil filling head moves downward to compact the soil sample. The device compacts the soil by moving the soil filling head to prepare the soil sample for later permeation testing.

[0005] Although the above device can prepare soil samples, in the process of preparing soil samples, the soil filling head and the sealing strip move downward synchronously to compact the soil sample. After the soil sample is compacted, the soil filling head moves upward relative to the sealing strip, causing the lower end of the sealing strip to protrude from the bottom wall of the soil filling head. At this time, the soil sample is in contact with the sealing strip. Since the sealing strip has a small force receiving area, the soil sample that is not in contact with the sealing strip will be loose, which may lead to inaccurate test results during later testing. SUMMARY

[0006] This section is intended to introduce some aspects of one or more embodiments of the present application, which are described below. This section is not intended to limit the scope or content of the application in any way.

[0007] To solve the problem that the soil sample prepared by the device is easy to be loose, the application adopts the technical solutions as follows.

[0008] An ecological fragile area vegetation substrate performance testing device, comprising a frame assembly composed of a fixed base at the bottom and a top frame at the top, and a support frame connected between the fixed base and the top frame, and the fixed base is placed with a container containing the vegetation substrate;

[0009] The device further comprises a pressing unit, which comprises a fixed plate fixedly connected with the frame assembly, a fixed guide rod fixedly connected between the fixed plate and the fixed base, and a pressing assembly arranged on the pressing unit and slidably assembled with the fixed guide rod.

[0010] Preferably, in the ecological fragile area vegetation substrate performance testing device, the pressing unit further comprises a sliding plate slidably assembled with the fixed guide rod, and a connecting seat fixedly connected to the lower surface of the sliding plate, and the pressing assembly is rotatably connected with the connecting seat.

[0011] Preferably, in the ecological fragile area vegetation substrate performance testing device, a spiral groove is distributed on the side wall of the rotating cylinder, and a guide column is distributed on the side wall of the container.

[0012] Preferably, in the ecological fragile area vegetation substrate performance testing device, the pressing assembly further comprises a pressing head fixedly installed at the end of the fixed cylinder, and the inside of the pressing head is hollow and communicates with the fixed cylinder.

[0013] Preferably, the lower surface of the lower pressing head in the ecological fragile area plant substrate performance testing device is also provided with a plurality of cutting teeth, and when the lower pressing head rotates with the fixed cylinder and the rotating cylinder during the pressing process, the cutting teeth on the lower surface of the lower pressing head cut and crush the fibers in the plant substrate, and the cutting teeth flatten the surface of the plant substrate.

[0014] Preferably, the ecological fragile area plant substrate performance testing device further comprises a driving mechanism, the driving mechanism comprises a take-up roller arranged on one side of the fixed base, a traction rope is wound around the take-up roller, and a connecting wheel is mounted on the top of the sliding plate, the traction rope passes through the guide wheel and is connected to the connecting wheel, the driving mechanism further comprises a driving motor for driving the take-up roller to rotate, the driving motor is a self-locking motor, a driving gear is connected to the power end of the driving motor, and a driven gear is mounted on the rotating shaft of the take-up roller, the driving gear is engaged with the driven gear, and the driving motor drives the take-up roller to rotate to wind or unwind the traction rope through the cooperation of the driving gear and the driven gear.

[0015] Preferably, the ecological fragile area plant substrate performance testing device further comprises a support structure, the support structure comprises a protective plate, the end of the protective plate is fixedly mounted with a sliding block, the sliding block is slidably assembled on the support frame, and a through hole is formed in the protective plate for the end of the container to pass through, the support structure further comprises a support rod, one end of the support rod is movably connected to the surface of the fixed base, and the other end of the support rod is movably connected with a support plate, the support plate is an arc-shaped structure matched with the outer wall of the container, a telescopic spring is further connected to the support rod, and the other end of the telescopic spring is connected to the protective plate, the protective plate moves downward to compress the telescopic spring, and the telescopic spring drives the support rod to rotate until the support plate can be tightly pressed against the side wall of the container.

[0016] Preferably, the ecological fragile area plant substrate performance testing device further comprises a support structure, the support structure comprises a support rod, one end of the support rod is movably connected to the surface of the fixed base, and the other end of the support rod is movably connected with a support plate, the support plate is an arc-shaped structure matched with the outer wall of the container, the support rod is connected to the fixed base through a torsional spring, and the torsional spring drives the support rod to rotate so that the support plate can be tightly pressed against the side wall of the container.

[0017] Another aspect of the present application provides a method for testing the performance of plant substrates in ecological fragile areas, which specifically adopts the following technical scheme.

[0018] A method for testing the performance of plant substrates in ecological fragile areas, comprising the following steps:

[0019] The plant substrate is contained in a container, and the container is provided with scale lines, and the initial volume of the plant substrate is obtained through the scale lines.

[0020] The ecological fragile area planting substrate performance testing device is used for compacting the planting substrate in the container, and the final volume of the compacted planting substrate is obtained through the scale line.

[0021] The porosity of the planting substrate is obtained through the ratio of the difference between the initial volume and the final volume to the initial volume, and the compacted planting substrate sample can be obtained.

[0022] Preferably, the ecological fragile area planting substrate performance testing method further comprises a permeability test on the compacted planting substrate sample, and the planting substrate is placed in a permeability testing device to detect the permeability of the compacted planting substrate.

[0023] Compared with the prior art, the ecological fragile area planting substrate performance testing device has the following advantages:

[0024] The ecological fragile area planting substrate performance testing device in the application is used for compacting the planting substrate, so as to test the porosity and permeability of the planting substrate. The device is used for compacting the planting substrate through the lower pressing assembly, and the rotating cylinder in the lower pressing assembly drives the fixed cylinder and the lower pressing head to rotate through the cooperation of the spiral groove and the guide column, so that the planting substrate can be compacted while being lowered and rotated. The lower pressing head seals the container containing the planting substrate, the lower pressing head and the fixed cylinder are provided with exhaust holes, which can exhaust the air in the container, and the lower pressing head is also provided with cutting teeth to shred the fibers in the planting substrate, thereby ensuring the quality of the prepared planting substrate, avoiding the loose planting substrate, and ensuring the smooth end of the prepared planting substrate sample and high quality.

[0025] The ecological fragile area planting substrate performance testing device in the application further comprises a support structure for supporting and protecting the container, so as to enable the lower pressing assembly to enter the container to compact the planting substrate. The support structure comprises a protection plate and a support rod, the end of the support rod is connected with a support plate, the support plate can be attached to the side wall of the container through the rotation of the support rod to support and protect the container, the protection plate is provided with a through hole for the container to pass through, which can limit the container to a certain extent, and the compression spring on the protection plate can drive the support rod to rotate so that the support plate can tightly press against the side wall of the container to support and reinforce the container, thereby ensuring the stability of the container.

[0026] The support structure in the application can also be a support rod and a support plate, the support rod is connected to the fixed base of the device through a torsional spring, when the container needs to be supported and reinforced, the torsional spring is charged through the rotation of the support rod, and then the container is placed on the fixed base, the support rod and the support plate can be tightly supported on the side wall of the container through the elastic force of the torsional spring, thereby ensuring the stability of the container, so that the lower pressing assembly can enter the container to compact the planting substrate in the container. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a testing device in the present application;

[0028] Figure 2 is a rear view of Figure 1 ;

[0029] Figure 3 is a side view of Figure 1 ;

[0030] Figure 4 is a structural schematic diagram of a pressing unit and a frame assembly installation structure in the present application;

[0031] Figure 5 is a structural schematic diagram of a pressing unit in the present application;

[0032] Figure 6 is a sectional view of the pressing unit in the present application;

[0033] Figure 7 is a bottom view of the pressing unit in the present application;

[0034] Figure 8 is a structural schematic diagram of a pressing head in the present application;

[0035] Figure 9 is a structural schematic diagram of a driving mechanism in the present application;

[0036] Figure 10 is a structural schematic diagram of a support structure in the present application;

[0037] Figure 11 is a schematic diagram of the cooperation between the support structure and the pressing unit in the present application.

[0038] The correspondence between the respective reference signs in the drawings and the component names is as follows:

[0039] 100, frame assembly; 200, support structure; 300, pressing unit; 400, driving mechanism;

[0040] 101, fixed base; 102, support frame; 103, top frame;

[0041] 201, protective plate; 202, sliding block; 203, support rod; 204, extension spring; 205, support plate;

[0042] 301, fixed plate; 302, fixed guide rod; 303, sliding plate; 304, connecting wheel; 305, pressing assembly;

[0043] 401, driving motor; 402, driving gear; 403, driven gear; 404, take-up roller; 405, traction rope;

[0044] 302a, buffer ring; 302b, buffer spring; 303a, connecting seat; 305a, rotating cylinder; 305b, fixed cylinder; 305c, lower pressure head; 305d, spiral groove;

[0045] 305c-1, cutting teeth; 305c-2, vent. Detailed Implementation

[0046] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0048] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0049] like Figures 1-3 As shown, it is a structural schematic diagram of the performance testing device for vegetation substrate in ecologically fragile areas in this embodiment. The testing device in this embodiment includes a frame component 100, a pressing unit 300 installed on the frame component 100, a container placed on the frame component 100, and vegetation substrate contained in the container. The pressing unit 300 presses down on the vegetation substrate, and after compaction, a sample of the vegetation substrate can be obtained.

[0050] like Figure 1 As shown, the frame assembly 100 in this embodiment includes a fixed base 101, a support frame 102 fixedly mounted on the fixed base 101, and a top frame 103 fixedly connected to the top of the support frame 102. The fixed base 101, the support frame 102, and the top frame 103 together constitute a stable frame assembly 100. In this embodiment, a container is placed on the fixed base 101, and the container contains a plant substrate. A pressing unit 300 is installed on the frame assembly 100. The pressing unit 300 moves along the height direction of the support frame 102, thereby pressing down the plant substrate in the container to obtain a sample of the plant substrate.

[0051] like Figure 2 As shown and Figure 3As shown, the pressing unit 300 in this embodiment includes a fixed guide rod 302 fixedly installed on a fixed base 101. The top end of the fixed guide rod 302 is connected to a fixed plate 301. The pressing unit 300 also includes a sliding plate 303 slidably installed on the fixed guide rod 302. The two ends of the sliding plate 303 are sleeved on the fixed guide rod 302 and can slide along the length direction of the fixed guide rod 302. In this embodiment, the bottom of the sliding plate 303 is connected to a pressing component 305. When the sliding plate 303 moves along the length direction of the fixed guide rod 302, the pressing component 305 moves with the sliding plate 303, thereby causing the pressing component 305 to enter the container and compact the plant substrate in the container to obtain a sample of the plant substrate.

[0052] like Figure 2 As shown, in this embodiment, the performance testing device for vegetation substrate in ecologically fragile areas obtains samples by pressing the vegetation substrate into a container using the pressing component 305. To avoid damage to the container caused by excessively fast pressing speed of the pressing component 305, as shown... Figure 2 As shown, in this embodiment, a buffer mechanism is also provided on the fixed guide rod 302 to buffer the speed of the pressing component 305. This buffer mechanism includes a buffer spring 302b sleeved on the fixed guide rod 302. One end of the buffer spring 302b is connected to the fixed base 101, and the other end is connected to a buffer ring 302a. The buffer ring 302a is sleeved on the fixed guide rod 302. When the pressing component 305 moves downwards with the sliding plate 303 into the container to compact the plant substrate, the sliding plate 303 moves downwards and contacts the buffer ring 302a, compressing the buffer spring 302b. The spring 302b buffers the downward speed of the sliding plate 303, preventing excessive impact on the container caused by the rapid downward speed of the buffer plate 303 and the pressing component 305, thus avoiding damage to the container. In this embodiment, the buffer spring 302b and the buffer ring 302a cooperate to form a buffer mechanism to buffer the pressing component 305, effectively protecting the container and preventing damage.

[0053] like Figures 3-8 As shown, in this embodiment, a connecting seat 303a is fixedly connected to the lower surface of the sliding plate 303, and the pressing component 305 in this embodiment also includes a rotating cylinder 305a and a fixed cylinder 305b coaxially arranged with the rotating cylinder 305a. In this embodiment, the rotating cylinder 305a is rotatably disposed on the connecting seat 303a, and the fixed cylinder 305b is located in the rotating cylinder 305a. When the rotating cylinder 305a rotates relative to the connecting seat 303a, the rotating cylinder 305a can drive the fixed cylinder 305b to rotate synchronously.

[0054] In this embodiment, when the sliding plate 303 descends, the rotating cylinder 305a is sleeved on the outside of the container, and the fixed cylinder 305b enters the container. The fixed cylinder 305b compacts the plant substrate in the container to obtain a sample of the plant substrate.

[0055] like Figures 5-8 As shown, in this embodiment, to ensure the quality of the plant substrate sample, a pressing head 305c is fixedly connected to the end of the fixing cylinder 305b. The pressing head 305c has a hollow structure and communicates with the interior of the fixing cylinder 305b. In this embodiment, after the pressing head 305c enters the container along with the fixing cylinder 305b, it seals the container and descends with the fixing cylinder 305b to compact the plant substrate in the container, thus ensuring the quality of the plant substrate sample. Because the pressing head 305c compresses the container... Since the container is sealed, the increased pressure inside the container when the pressure head 305c moves downwards prevents the pressure head 305c from descending. To avoid this problem, in this embodiment, multiple vent holes 305c-2 are distributed on the lower surface of the pressure head 305c and the surface of the fixed cylinder 305b. When the pressure head 305c moves downwards in the container, the gas in the container enters the pressure head 305c through the vent holes 305c-2 and then enters the fixed cylinder 305b and is discharged through the vent holes 305c-2, so that the pressure head 305c can move smoothly to compact the plant substrate.

[0056] In addition, such as Figures 5-7 As shown, in this embodiment, a spiral groove 305d is provided on the surface of the rotating cylinder 305a along the height direction of the rotating cylinder 305a, and guide posts are distributed on the end side wall of the container. When the rotating cylinder 305a and the fixed cylinder 305b move downward synchronously, the rotating cylinder 305a is sleeved on the container, and the guide posts on the container enter the spiral groove 305d. When the rotating cylinder 305a continues to descend, the cooperation between the spiral groove 305d and the guide posts can drive the rotating cylinder 305a and the fixed cylinder 305b to rotate synchronously. The fixed cylinder 305b drives the pressing head 305c to rotate synchronously, which can rotate on the surface of the plant substrate while pressing it down, thereby making the surface of the plant substrate flat and improving the quality of the end face of the plant substrate sample.

[0057] In addition, such as Figure 8As shown, as another preferred mode of the present embodiment, since there are more humus materials and fiber materials in the material of the vegetation substrate, when the fiber materials are not broken, there are more protruding fibers at the end of the prepared vegetation substrate sample in the vegetation substrate, which affects the quality of the vegetation substrate sample. In order to avoid this problem, in the present embodiment, the lower surface of the lower pressing head 305c is also distributed with a plurality of cutting teeth 305c-1. When the lower pressing head 305c rotates following the fixed cylinder 305b and the rotating cylinder 305a during the pressing process, the cutting teeth 305c-1 on the lower surface of the lower pressing head 305c cut and crush the fibers in the vegetation substrate, thereby avoiding the existence of protruding fibers at the end of the prepared vegetation substrate sample, and ensuring the quality of the vegetation substrate sample. In addition, it should be noted that the cutting teeth 305c-1 in the present embodiment can not only cut the fibers, but also rotate with the fixed cylinder 305b and the rotating cylinder 305a to smooth and flatten the surface of the vegetation substrate when the surface of the vegetation substrate in the container is uneven, which further ensures the quality of the prepared vegetation substrate sample.

[0058] As shown in Figure 3 and Figure 9 As shown, the vegetation substrate performance testing device for ecologically fragile areas in the present embodiment further comprises a driving mechanism 400 for driving the lower pressing unit 300 to move up and down. The driving mechanism 400 in the present embodiment comprises a take-up roller 404 arranged on one side of the fixed base 101, a traction rope 405 wound around the take-up roller 404, and a connecting wheel 304 mounted on the top of the sliding plate 303. The traction rope 405 passes through a guide wheel and is connected to the connecting wheel 304. In the present embodiment, when the take-up roller 404 rotates to release the traction rope 405, the sliding plate 303 drives the lower pressing assembly 305 to move downward into the container, thereby compacting the vegetation substrate in the container to prepare a vegetation substrate sample. When the take-up roller 404 reversely rotates to take up the traction rope 405, the traction rope 405 drives the sliding plate 303 to move upward, so that the lower pressing assembly 305 moves away from the container, so as to take out the container and obtain the vegetation substrate sample.

[0059] The driving mechanism 400 in the embodiment further comprises a driving motor 401 for driving the take-up roller 404 to rotate, the driving motor 401 is a self-locking motor, the driving motor 401 is connected with a driving gear 402 at the power end, and a driven gear 403 is installed on the rotating shaft of the take-up roller 404, the driving gear 402 is engaged with the driven gear 403, when the driving motor 401 works to drive the driving gear 402 to rotate, the driving gear 402 drives the driven gear 403 to rotate, so as to drive the take-up roller 404 to rotate, it is worth noting that the driving motor 401 in the embodiment is a self-locking motor, which can lock the driving gear 402 in the non-working state, avoiding the rotation of the driving gear 402, so as to lock the take-up roller 404, thereby realizing that the pressing assembly 305 can be in a static state when the driving motor 401 is not working.

[0060] As shown in Figure 3 , Figures 10-11 The support structure 200 in the embodiment is shown in the structure diagram, the support structure 200 in the embodiment is used for supporting the container, so as to improve the stability of the container, and facilitate the pressing assembly 305 to enter the container to compact the plant substrate.

[0061] The support structure 200 in the embodiment comprises a protective plate 201, the end of the protective plate 201 is fixedly installed with a sliding block 202, the sliding block 202 is slidingly assembled on the support frame 102, therefore, the protective plate 201 can slide up and down along the height direction of the support frame 102, the protective plate 201 in the embodiment is provided with a through hole, when placing the container, the protective plate 201 is lifted to move upward along the height direction of the support frame 102, then the container is placed on the fixed base 101, then the protective plate 201 moves downward, so that the end of the container passes through the through hole on the protective plate 201. It is worth noting that the inner diameter of the through hole on the protective plate 201 in the embodiment is greater than the outer diameter of the rotating cylinder 305a in the pressing assembly 305, so as to facilitate the rotating cylinder 305a to pass through the through hole and be sleeved outside the container.

[0062] In addition, the support structure 200 in the embodiment further comprises a support rod 203, one end of the support rod 203 is movably connected to the surface of the fixed base 101, the other end of the support rod 203 is movably connected with a support plate 205, the support plate 205 is an arc-shaped structure matched with the outer wall of the container, and a telescopic spring 204 is further connected to the support rod 203, the other end of the telescopic spring 204 is connected to the protective plate 201. In the embodiment, when the container is placed, the protective plate 201 moves upward, the telescopic spring 204 is stretched by pulling the telescopic spring 204 during the upward movement of the protective plate 201, the telescopic spring 204 pulls the support rod 203 to rotate, so that the oppositely arranged support plates 205 move away, after the container is placed on the fixed base 101, the protective plate 201 moves downward, the telescopic spring 204 is compressed to drive the support rod 203 to rotate reversely, so that the oppositely arranged support plates 205 move close to each other, until the support plates 205 are close to and adhere to the outer wall surface of the container, and the telescopic spring 204 is in a compressed state, the support plates 205 are pressed on the outer wall of the container by the elastic force of the telescopic spring 204, so as to support and reinforce the container, and the stability of the container on the fixed base 101 is ensured.

[0063] It is worth noting that the support rod 203 in the embodiment supports and reinforces the container by the elastic force of the telescopic spring 204 and cooperates with the support plate 205, as another preferred mode, the support rod 203 and the fixed base 101 are connected by a torsion spring, and the support rod 203 can also be applied in the embodiment by the elastic force of the torsion spring and cooperates with the support plate 205 to support and protect the container.

[0064] In the embodiment, the pressing assembly 305 is directly above the container, after the container is stably supported by the support structure 200, the pressing assembly 305 moves downward by the action of the driving mechanism 400, so that the rotating cylinder 305a passes through the through hole in the protective plate 201 and is arranged outside the container, and the fixed cylinder 305b enters the container to compact the plant substrate, so as to obtain the sample of the plant substrate.

[0065] The above is the specific technical scheme of the ecological fragile zone plant substrate performance testing device in the embodiment, in addition, the embodiment also provides a method for testing the performance of the plant substrate by the above device, which is as follows.

[0066] First, the plant substrate is filled in the container, the container is provided with a scale line, the volume of the filled plant substrate can be read by the scale line, that is, the initial volume of the plant substrate is obtained.

[0067] Then the driving mechanism 400 drives the pressing unit 300 to work, the pressing assembly 305 in the pressing unit 300 moves downward until the fixed cylinder 305b in the pressing assembly 305 drives the pressing head 305c to enter the container to compact the plant growth substrate in the container, the volume of the compacted plant growth substrate can be read through the scale line, that is, the final volume of the plant growth substrate is obtained.

[0068] The porosity of the plant growth substrate can be obtained by the ratio of the volume difference between the initial volume and the final volume and the initial volume, and the sample of the compacted plant growth substrate can be further tested for performance, and the further performance test includes permeability test of the plant growth substrate, and the plant growth substrate is placed in a permeability test device to detect the permeability of the compacted plant growth substrate.

[0069] In the process of compacting the plant growth substrate as described above, since the side wall of the container is provided with guide columns, the outer wall of the rotating cylinder 305a in the pressing assembly 305 is provided with a spiral groove 305d, when the pressing assembly 305 moves downward until the guide column of the container enters the spiral groove 305d of the rotating cylinder 305a, since the rotating cylinder 305a is rotatably arranged, when the guide column cooperates with the spiral groove 305d, the rotating cylinder 305a can be driven to rotate, and the rotating cylinder 305a can drive the fixed cylinder 305b and the pressing head 305c in the container to rotate, so that the surface of the plant growth substrate in the container can be flattened, and the quality of the plant growth substrate sample is guaranteed.

[0070] In addition, the cutting teeth 305c-1 on the pressing head 305c can also cut the fibers in the plant growth substrate, further guaranteeing the quality of the plant growth substrate sample.

[0071] The test method in the embodiment also includes a step of stabilizing the container, specifically, lifting the protective plate 201 when placing the container, at this time the protective plate 201 moves upward through the extension spring 204 to pull the support rod 203 to swing, so that the oppositely arranged support plates 205 move away from each other, when the container is placed on the fixed base 101, the protective plate 201 moves downward, the end of the container passes through the through hole of the protective plate 201, at this time the protective plate 201 makes the extension spring 204 compressed to drive the support rod 203 to rotate, the support rod 203 drives the support plate 205 to move so that the support plate 205 is pressed on the side wall of the container to support and reinforce the container, guaranteeing the stability of the container, so that the fixed cylinder 305b and the pressing head 305c in the pressing assembly 305 enter the container to compact the plant growth substrate.

[0072] Of course, in the test device in the embodiment, when the end of the support rod 203 is connected to the fixed base 101 by the torsion spring, the torsion spring is charged by rotating the support rod 203 when the container is placed, and then the torsion spring drives the support rod 203 to reset after the container is placed, so that the support plate 205 is pressed against the surface of the container to improve the stability of the container. The effect can also be applied in the embodiment.

[0073] In the test method of the embodiment, when the lower head 305c moves downward in the container to compact the plant substrate, in order to avoid the situation that part of the plant substrate cannot be compacted due to the inner diameter of the lower head 305c being smaller than the inner diameter of the container, the outer diameter of the lower head 305c in the embodiment is equal to the inner diameter of the container, and the side wall of the lower head 305c is in close contact with the inner wall of the container to seal the container. The lower head 305c in the embodiment is in communication with the inside of the fixed cylinder 305b, and the lower surface of the lower head 305c is uniformly distributed with exhaust holes 305c-2 on the side wall of the fixed cylinder 305b. In order to facilitate the air in the container to be discharged during the downward movement of the lower head 305c, the plant substrate in the container is compacted to obtain the final volume of the plant substrate and the plant substrate sample.

[0074] The above is a further detailed description of the present application in combination with the specific embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as belonging to the protection scope determined by the claims of the present application.

Claims

1. An ecological fragile area vegetation substrate performance testing device, comprising a frame assembly (100), the frame assembly (100) is composed of a fixed base (101) at the bottom and a top frame (103) at the top, and a support frame (102) is connected between the fixed base (101) and the top frame (103), and the fixed base (101) is placed with a container containing the vegetation substrate; It also includes a pressing unit (300), which includes a fixed plate (301) fixedly connected with the frame assembly (100), and a fixed guide rod (302) fixedly connected between the fixed plate (301) and the fixed base (101), characterized in that: The pressing unit (300) is provided with a pressing assembly (305), which is slidingly assembled with the fixed guide rod (302), and the pressing assembly (305) slides along the fixed guide rod (302) into the container to compact the vegetation substrate in the container, and the pressing assembly (305) rotates itself to flatten the surface of the vegetation substrate in the container when compacting the vegetation substrate; The pressing unit (300) further comprises a sliding plate (303) slidingly assembled with the fixed guide rod (302), and the lower surface of the sliding plate (303) is fixedly connected with a connecting seat (303a), and the pressing assembly (305) is rotatably connected with the connecting seat (303a), and the pressing assembly (305) comprises a rotating cylinder (305a) and a fixed cylinder (305b) coaxially arranged in the rotating cylinder (305a); The side wall of the rotating cylinder (305a) is provided with a spiral groove (305d), and the side wall of the container is provided with a guide column, when the rotating cylinder (305a) moves downward and is sleeved outside the container, the guide column enters the spiral groove (305d), and the guide column cooperates with the spiral groove (305d) to drive the rotating cylinder (305a) and the fixed cylinder (305b) to rotate; The pressing assembly (305) further comprises a pressing head (305c), which is fixedly installed at the end of the fixed cylinder (305b), and the inside of the pressing head (305c) is hollow and communicates with the fixed cylinder (305b), and the lower surface of the pressing head (305c) is uniformly provided with exhaust holes (305c-2) on the side wall of the fixed cylinder (305b), the pressing head (305c) enters the container to seal the container, and the air in the container is discharged through the exhaust holes (305c-2); The lower surface of the pressing head (305c) is also provided with a plurality of cutting teeth (305c-1).

2. The device according to claim 1, wherein When the pressing assembly (305) moves downward to compact the vegetation substrate in the container, the rotating cylinder (305a) is sleeved outside the container, and the fixed cylinder (305b) enters the container, the rotating cylinder (305a) rotates to drive the fixed cylinder (305b) to rotate, so that the fixed cylinder (305b) moves and rotates to compact the vegetation substrate in the container.

3. The device according to claim 2, wherein When the pressing head (305c) rotates following the fixed cylinder (305b) and the rotating cylinder (305a) during the pressing process, the cutting teeth (305c-1) on the lower surface of the pressing head (305c) cut and crush the fibers in the vegetation substrate, and the cutting teeth (305c-1) flatten the surface of the vegetation substrate.

4. The device according to claim 1, wherein The driving mechanism (400) includes a take-up roller (404) arranged on one side of the fixed base (101), a traction rope (405) is wound on the take-up roller (404), and a connecting wheel (304) is mounted on the top of the sliding plate (303); the traction rope (405) passes through a guide wheel and is connected to the connecting wheel (304); the driving mechanism (400) further includes a driving motor (401) for driving the take-up roller (404) to rotate; the driving motor (401) is a self-locking motor; a driving gear (402) is connected to the power end of the driving motor (401); a driven gear (403) is mounted on the rotating shaft of the take-up roller (404); the driving gear (402) is engaged with the driven gear (403); and the driving motor (401) drives the take-up roller (404) to rotate through the driving gear (402) and the driven gear (403) to wind or unwind the traction rope (405).

5. The device according to claim 1, wherein The support structure (200) includes a protection plate (201), the end of the protection plate (201) is fixedly installed with a sliding block (202), the sliding block (202) is slidingly assembled on the support frame (102), and a through hole is formed in the protection plate (201) for the end of the container to pass through; the support structure (200) further includes a support rod (203), one end of the support rod (203) is movably connected to the surface of the fixed base (101), the other end of the support rod (203) is movably connected with a support plate (205), the support plate (205) is an arc-shaped structure matched with the outer wall of the container, a telescopic spring (204) is further connected to the support rod (203), the other end of the telescopic spring (204) is connected to the protection plate (201), the protection plate (201) moves downward to compress the telescopic spring (204), and the telescopic spring (204) drives the support rod (203) to rotate until the support plate (205) can be tightly pressed against the side wall of the container.

6. The device according to claim 1, wherein The support structure (200) includes a support rod (203), one end of the support rod (203) is movably connected to the surface of the fixed base (101), the other end of the support rod (203) is movably connected with a support plate (205), the support plate (205) is an arc-shaped structure matched with the outer wall of the container, and the support rod (203) is connected with the fixed base (101) through a torsional spring; the torsional spring drives the support rod (203) to rotate so that the support plate (205) can be tightly pressed against the side wall of the container.

7. A method for testing the performance of a vegetation substrate in an ecologically fragile area, characterized by, The method comprises the following steps: The vegetation substrate is placed in the container, and the container is provided with scale lines, and the initial volume of the vegetation substrate is obtained through the scale lines; The vegetation substrate is placed in the container, and the container is provided with scale lines, and the initial volume of the vegetation substrate is obtained through the scale lines; The ecological fragile area vegetation substrate performance testing device of any one of claims 1-6 is used to compact the vegetation substrate in the container, and the final volume of the compacted vegetation substrate is obtained through the scale line; The porosity of the vegetation substrate is obtained through the ratio of the difference between the initial volume and the final volume to the initial volume, and the compacted vegetation substrate sample can be obtained.

8. The ecological fragile area vegetation substrate performance testing method of claim 7, further comprising performing a permeability test on the compacted vegetation substrate sample, and placing the vegetation substrate into a permeability testing device to detect the permeability of the compacted vegetation substrate.

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