Accumulation angle measuring device capable of being used for loose materials

Abstract

The utility model discloses a stacking angle measuring device capable of being used for loose materials in the field of physical property measurement of materials, which comprises a base plate support, a base plate fixing device, a base plate, a funnel neck support, a funnel and a surrounding shooting device, and the base plate fixing device is arranged on a base plate fixing device guide rail on the upper surface of the base plate support. The four base plate fixing devices jointly and horizontally support and position a circular base plate, a vertical fixed supporting rod, a height-adjustable vertical movable supporting rod, a horizontal supporting rod and a circular tube clamping device are sequentially connected to the tail end of one side of the base plate support, a funnel neck is fixed in the circular tube clamping device, and a surrounding shooting device is fixed to the upper surface of the base plate support. The diameter of the base plate and the height and the position of the funnel opening can be adjusted, the range of the grain size and the stacking angle of the material capable of being measured is wide, convenient and accurate measurement is achieved, the problem that partial laboratory stacking angle measuring devices can only measure powder is solved, and scientific data acquisition can be achieved through the surrounding shooting device.

Description

Technical Field

[0001] The utility model relates to the field of physical property measurement of materials, in particular to a stacking angle measurement device which can be used for loose materials. Background Art

[0002] The stacking angle refers to the angle between the pile and the ground when the material is naturally stacked, that is, the maximum stable slope when the material is naturally stacked. It is a macro parameter that characterizes the flow and friction characteristics of granular materials. The measurement of the stacking angle can be used to determine the fluidity level and internal friction coefficient of the material, thereby affecting the process efficiency, the structural design of mechanical products and the material storage conditions. The stacking angle is also an important physical parameter in the discrete element model. In order to calibrate the physical parameters of the granular material in the model and help further carry out the fluidity research of the granular material, physical experiments for stacking angle measurement are required.

[0003] At present, the injection method is mostly used to measure the angle of accumulation. According to GB 11986-89, the commonly used instruments for measuring the angle of accumulation in laboratories can measure the angle of accumulation of a small amount of powder samples, such as flour, rice grains, and soil. JB / T 9014.7-1999 involves an instrument for measuring the angle of accumulation of bulk materials, which can measure the angle of accumulation of materials with a particle size of 0-50 mm, while materials with a particle size of 6-50 mm need to be manually shoveled and piled. For loose materials with low density and large particle size with a particle diameter greater than 10 mm, such as seed cotton, it is difficult to use existing laboratory instruments to measure the angle of accumulation; some existing devices are difficult to operate and have low measurement accuracy, and have certain limitations. It is difficult to use the same device to complete the stacking test of different particle diameters, different material stacking planes, or different particle types.

[0004] Based on this, the utility model designs a stacking angle measuring device that can be used for loose materials to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a device for measuring the accumulation angle of loose materials to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for measuring the stacking angle of loose materials, comprising a substrate support, a substrate fixing device, a substrate, a funnel neck support, a funnel and a surround shooting device; the substrate support is formed by connecting aluminum profiles, and the four profiles in the middle of the upper surface of the substrate support are guide rails for the substrate fixing device, and the guide rails for the substrate fixing device are connected to the substrate fixing device that can move along the guide rails, and the connecting plate of the substrate fixing device is installed with a supporting foot assembly, and the screw of the supporting foot assembly is connected with a positioning slot, and a circular substrate is placed horizontally above the supporting foot assembly, and one side of the substrate support is vertically A funnel neck bracket is installed on the ground, and the funnel neck bracket includes a vertical fixed support rod, a vertical movable support rod, a horizontal support rod and a round tube clamping device. The vertical fixed support rod is connected to the substrate bracket, and the vertical fixed support rod is connected to the vertical movable support rod. The top end of the vertical movable support rod is connected to the horizontal support rod, and the end of the horizontal support rod is connected to the round tube clamping device. The neck of the funnel is fixed in the round tube clamping device. A surround shooting device is fixed on the upper surface of the substrate bracket, and the surround shooting device includes a rotating frame, 4 groups of rotating frame brackets and a photo bracket.

[0008] Preferably, the substrate bracket is formed by connecting aluminum profiles and profile angle brackets, and a total of 8 aluminum profiles on the upper surface of the substrate bracket are interconnected in the shape of vertical and horizontal lines in a "Pythagorean square diagram", and the guide rails of the substrate fixing device are the 4 grooved aluminum profiles in the middle.

[0009] Preferably, the connecting plate has a positioning protrusion and is slidably connected to the groove on the upper surface of the guide rail grooved aluminum profile of the substrate fixing device. The supporting foot assembly includes a supporting foot and a handle A. The circular plane of the supporting foot faces upward, and the screw of the supporting foot successively passes through the through hole of the positioning slot, is connected to the nut on the connecting plate, and is fixedly connected to the handle A. There is a nut on the screw of the supporting foot assembly to fix the axial position of the positioning slot, so that the bottom of the groove of the positioning slot is slightly lower than the top surface of the supporting foot assembly and can rotate around its screw.

[0010] Preferably, a "cross"-shaped reinforcing rib is fixedly connected to the bottom of the test sheet of the base plate, and the cross section of the reinforcing rib can be embedded in the groove of the positioning slot.

[0011] Preferably, the vertical fixed support rod is formed by connecting a square tube profile and other profiles, the vertical fixed support rod is installed on one side of the substrate bracket, the square tube of the vertical fixed support rod is perpendicular to the upper surface of the substrate bracket and is located on its symmetry plane, the vertical movable support rod is sleeved in the square tube of the vertical fixed support rod, the vertical movable support rod is a grooved aluminum profile and its groove and the hole of the vertical fixed support rod are connected to the handle nut B through a T-bolt; the horizontal support rod is a grooved aluminum profile with 4 holes in the cross section, and the end of the horizontal support rod is fixed to the end of the vertical movable support rod and is perpendicular to it.

[0012] Preferably, the round tube clamping device includes a clamping device base plate, a fixed clamping block, a movable clamping block, a guide rod, a telescopic handle bolt C and a clamping handle bolt D, the fixed clamping block and the movable clamping block are both V-shaped plates, the hole on the edge of the fixed clamping block and the nut on the edge of the movable clamping block are connected through the clamping handle bolt D and fix the funnel neck position, the clamping device base plate and the fixed clamping block are connected through a long hexagonal nut column, the telescopic handle bolt C is axially fixed to the clamping device base plate through a shaft ring and connected to the center threaded hole of the profile section of the horizontal support rod, the guide rod is fixed to the clamping device base plate and forms a moving pair with the profile section hole of the horizontal support rod.

[0013] Preferably, the rotating frame is mainly formed by connecting a hoop to the outer cylindrical surface of a square tube ring through a screw, and the screw can be connected to the square tube ring through a flat head rivet nut; each rotating frame bracket is composed of a pulley frame, an adjustable pulley frame, a live bolt, an adjusting nut, a limit pulley, two supporting pulleys and a plurality of bolt pairs; the two holes on the side of the adjustable pulley frame are respectively connected with the holes on the side of the pulley frame and the holes of the live bolt to form a rotating pair, the live bolt passes through the notch on the top of the pulley frame and is connected to the adjusting nut, and the supporting pulley is installed at the lower part of the adjustable pulley frame with its axis perpendicular to its side; The L-shaped connecting plate and the pulley frame are successively installed at the top surface angles of the substrate bracket, and the installation holes of the pulley frame are parallel grooves; the limiting pulley and the other supporting pulley are installed on the pulley frame so that the rotation planes of the two supporting pulleys are on the same vertical plane, and the rotation plane of the limiting pulley is perpendicular to the above plane, and the above three pulleys simultaneously clamp one section of the rotating frame; the photo bracket is composed of a central axis and a gimbal, the central axis is a tube that can be raised and lowered and fixed, the gimbal can be connected to a camera or mobile phone bracket and adjust the angle with three degrees of freedom, and the central axis is fixed in the clamp.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The stacking angle measuring device designed by the utility model can measure the stacking angle of low-density loose materials with a particle diameter of 0-80 mm; the circular base plate of the device allows only material particles falling within the base plate area to be retained during measurement, and particles evenly scattered around the base plate can be used as a basis for judging the end of stacking, and the material pile after the end of stacking is approximately a cone, which is convenient for measuring the stacking angle by using image processing, so that the measurement result is more accurate; the base plate of a suitable diameter can be replaced according to the diameter of the material particles to avoid sample waste.

[0016] In the utility model, the positioning slot can realize the rapid alignment of the center of the base plate and the center of the funnel mouth; the vertical movable support rod can adjust the vertical position according to the expected stacking height of the material to be measured, thereby adjusting the height of the funnel mouth; the round tube clamping device can be fine-tuned longitudinally along the horizontal support rod, so as to make the center of the base plate coincide with the center of the funnel mouth and reduce the measurement error; the base plate is detachable and the funnel neck bracket can lower the height so that the device occupies less space when not in use.

[0017] The utility model is designed with a surround camera device, which can be installed with a camera or mobile phone bracket and adjust the pitch angle, and can conveniently perform multi-horizontal viewing angle acquisition or horizontal continuous acquisition of material accumulation images, so as to facilitate the accurate measurement of the accumulation angle by image processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the level adjustment device of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation effect of the level adjustment device of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the round tube clamping device of the utility model;

[0024] Figure 6 This is a schematic diagram of the top view of the round tube clamping device of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the rotating frame support of the utility model;

[0026] Figure 8 It is a schematic diagram of the structure and installation effect of the surround shooting device of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1-substrate bracket, 11-substrate fixing device guide rail, 1204-L-shaped connecting plate, 2-substrate fixing device, 21-connecting plate, 22-support foot assembly, 2201-support foot, 2202-handle A, 23-positioning slot, 3-substrate, 31-test thin plate, 32-strengthening rib, 4-funnel neck bracket, 41-vertical fixed support rod, 42-vertical movable support rod, 43-horizontal support rod, 44-round tube clamping device, 4401-clamping device bottom plate, 4402-fixed clamping block, 4403-movable clamping block, 4404-guide rod, 4405-telescopic handle bolt C, 4406-clamping handle bolt D, 45-handle nut B, 5-funnel, 6-surround shooting device, 61-rotating frame, 6101-square tube ring, 6102-screw, 6103-hoop, 62-rotating frame bracket, 6201-pulley frame, 6202-adjustable pulley frame, 6203-slip bolt, 6204-adjusting nut, 6205-limiting pulley, 6206-supporting pulley, 63-photographing bracket, 6301-central axis, 6302-pan head. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-8 , the utility model provides a technical solution:

[0031] A device for measuring the stacking angle of loose materials, comprising a substrate support 1, a substrate fixing device 2, a substrate 3, a funnel neck support 4, a funnel 5 and a surround shooting device 6; the substrate support 1 is formed by connecting aluminum profiles, and the four profiles in the middle of the upper surface of the substrate support 1 are substrate fixing device guide rails 11, and the substrate fixing device 2 that can move along the substrate fixing device guide rails 11 is connected to the substrate fixing device guide rails 11, and a supporting foot assembly 22 is installed on the connecting plate 21 of the substrate fixing device 2, and a positioning card slot 23 is connected to the screw of the supporting foot assembly 22, and a circular substrate 3 is horizontally placed above the supporting foot assembly 22, and a substrate support 3 is vertically installed on one side of the substrate support 1. The funnel neck bracket 4 includes a vertical fixed support rod 41, a vertical movable support rod 42, a horizontal support rod 43 and a round tube clamping device 44. The vertical fixed support rod 41 is connected to the substrate bracket 1. The vertical fixed support rod 41 is connected to the vertical movable support rod 42. The top end of the vertical movable support rod 42 is connected to the horizontal support rod 43. The end of the horizontal support rod 43 is connected to the round tube clamping device 44. The neck of the funnel 5 is fixed in the round tube clamping device 44. The upper surface of the substrate bracket 1 is fixed with a surround shooting device 6. The surround shooting device 6 includes a rotating frame 61, 4 groups of rotating frame brackets 62 and a photographing bracket 63.

[0032] Among them, the substrate bracket 1 is formed by connecting aluminum profiles and profile angle codes. A total of 8 aluminum profiles on the upper surface of the substrate bracket 1 are interconnected in the shape of vertical and horizontal lines in the "Pythagorean square diagram", and the substrate fixing device guide rails 11 are the 4 grooved aluminum profiles in the middle.

[0033] The connecting plate 21 has a positioning protrusion and is slidably connected to the groove on the upper surface of the grooved aluminum profile of the guide rail 11 of the base plate fixing device. The supporting foot assembly 22 includes a supporting foot 2201 and a handle A2202. The circular plane of the supporting foot 2201 faces upward, and the screw of the supporting foot 2201 successively passes through the through hole of the positioning slot 23, is connected to the nut on the connecting plate 21, and is fixedly connected to the handle A2202. There is a nut on the screw of the supporting foot assembly 22 to fix the axial position of the positioning slot 23, so that the bottom of the groove of the positioning slot 23 is slightly lower than the top surface of the supporting foot assembly 22 and can rotate around its screw.

[0034] A cross-shaped reinforcing rib 32 is fixedly connected to the bottom of the test thin plate 31 of the base plate 3 , and the cross section of the reinforcing rib 32 can be embedded in the groove of the positioning slot 23 .

[0035] The vertical fixed support rod 41 is formed by connecting a square tube profile with other profiles. The vertical fixed support rod 41 is installed on one side of the substrate bracket 1. The square tube of the vertical fixed support rod 41 is perpendicular to the upper surface of the substrate bracket 1 and is located on its symmetry plane. The vertical movable support rod 42 is sleeved in the square tube of the vertical fixed support rod 41. The vertical movable support rod 42 is a grooved aluminum profile and its groove is connected to the hole of the vertical fixed support rod 41 through a T-bolt and a handle nut B45; the horizontal support rod 43 is a grooved aluminum profile with 4 holes in the cross section. The end of the horizontal support rod 43 is fixed to the end of the vertical movable support rod 42 and is perpendicular to it.

[0036] The round tube clamping device 44 includes a clamping device base plate 4401, a fixed clamping block 4402, a movable clamping block 4403, a guide rod 4404, a telescopic handle bolt C4405 and a clamping handle bolt D4406. The fixed clamping block 4402 and the movable clamping block 4403 are both V-shaped plates. The hole on the edge of the fixed clamping block 4402 and the nut on the edge of the movable clamping block 4403 are connected through the clamping handle bolt D4406 and fix the neck position of the funnel 5. The clamping device base plate 4401 is connected to the fixed clamping block 4402 through a long hexagonal nut column. The telescopic handle bolt C4405 is axially fixed to the clamping device base plate 4401 through a shaft ring and is connected to the central threaded hole of the profile section of the horizontal support rod 43. The guide rod 4404 is fixed to the clamping device base plate 4401 and forms a moving pair with the profile section hole of the horizontal support rod 43.

[0037] The rotating frame 61 is mainly composed of a hoop 6103 connected to the outer cylindrical surface of a square tube ring 6101 through a screw 6102; each rotating frame bracket 62 is composed of a pulley frame 6201, an adjustable pulley frame 6202, a live bolt 6203, an adjusting nut 6204, a limit pulley 6205, two supporting pulleys 6206 and a plurality of bolt pairs; the two holes on the side of the adjustable pulley frame 6202 are respectively connected with the holes on the side of the pulley frame 6201 and the holes of the live bolt 6203 to form a rotating pair, the live bolt 6203 passes through the notch at the top of the pulley frame 6201 and is connected with the adjusting nut 6204, and the supporting pulley 6206 is installed at the lower part of the adjustable pulley frame 6202 with its axis perpendicular to its side; The shaped connecting plate 1204 and the pulley frame 6201 are successively installed at the top surface angle of the substrate bracket 1, and the installation holes of the pulley frame 6201 are parallel grooves; the limiting pulley 6205 and another supporting pulley 6206 are installed on the pulley frame 6201 so that the rotation planes of the two supporting pulleys 6206 are on the same vertical plane, and the rotation plane of the limiting pulley 6205 is perpendicular to the above plane, and the above three pulleys simultaneously clamp one section of the rotating frame 61; the photo bracket 63 is composed of a central axis 6301 and a pan head 6302, the central axis 6301 is a tube that can be raised and lowered and fixed, the pan head 6302 can be connected to a camera or mobile phone bracket and adjust the angle with three degrees of freedom, and the central axis 6301 is fixed in the clamp 6103.

[0038] A specific application of this embodiment is:

[0039] When the utility model is used, the position of the rotating frame bracket 62 relative to the four corners of the substrate bracket 1 is adjusted along the groove of the 6201-pulley frame to ensure that all the limiting pulleys 6205 are in contact with the inner cylindrical surface of the square tube ring 6101 and the center of the square tube ring 6101 coincides with the center of the substrate bracket 1; the adjusting nut 6204 is adjusted to make all the supporting pulleys 6206 contact with the upper and lower surfaces of the square tube ring 6101, and the square tube ring 6101 is horizontal.

[0040] When the utility model is used, the substrate 3 is placed on the four substrate fixing devices 2, so that the reinforcing ribs 32 are supported by the four supporting feet 2201, and the reinforcing ribs 32 are embedded in the positioning slots 23, so that the substrate 3 is limited in the horizontal direction, and then fixed by its own weight. The four handles A2202 are rotated respectively to adjust the vertical height of each supporting foot 2201, and the substrate 3 is adjusted to a horizontal level with the help of instruments such as a level. Considering that the reinforcing ribs 32 of different substrates 3 have processing errors, the above steps need to be repeated when the substrate 3 is replaced. When replacing substrates 3 of different diameters, it is also necessary to move each connecting plate 21 along the substrate fixing device guide rail 11 in advance to adjust the position of each substrate fixing device 2 so that the end of the reinforcing rib 32 falls on the supporting foot 2201 and the positioning slot 23.

[0041] According to the estimated maximum stacking angle, the height of the cone formed by the stacking can be calculated from the radius of the substrate. According to the height, the handle nut B45 on the vertical movable support rod 42 can be loosened, and the height of the vertical movable support rod 42 can be adjusted to make the distance from the funnel 5 mouth to the substrate consistent with the estimated height, and the handle nut B45 can be tightened to fix the vertical movable support rod 42. When using or replacing a funnel 5 with a different nozzle diameter for the first time, it is necessary to adjust the clamping handle bolt D4406 to remove or clamp the neck of the funnel 5, and adjust the telescopic handle bolt C4405 to adjust the horizontal position of the funnel 5 mouth so that the center of the substrate coincides with the center of the funnel mouth.

[0042] After the stacking is completed, a camera or a mobile phone is fixed to the pan / tilt 6302 of the camera bracket 63, and the rotating frame 61 is driven to rotate around the center of the substrate to collect images of material stacking at multiple horizontal viewing angles or continuous horizontal viewing angles.

[0043] After the measurement is completed, the height of the vertical movable support rod 42 can be adjusted to the lowest to reduce space occupation.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for measuring the angle of accumulation of loose materials, characterized in that: The invention comprises a substrate support (1), a substrate fixing device (2), a substrate (3), a funnel neck support (4), a funnel (5) and a surround shooting device (6); the substrate support (1) is formed by connecting aluminum profiles; four profiles in the middle of the upper surface of the substrate support (1) are substrate fixing device guide rails (11); the substrate fixing device (2) which can move along the substrate fixing device guide rails (11) are connected to the substrate fixing device guide rails (11); a supporting foot assembly (22) is installed on a connecting plate (21) of the substrate fixing device (2); a positioning slot (23) is connected to the screw of the supporting foot assembly (22); a circular substrate (3) is horizontally placed above the supporting foot assembly (22); a funnel neck support (4) is vertically installed on one side of the substrate support (1); the funnel neck support (4) is vertically installed on one side of the substrate support (1); The support (4) comprises a vertical fixed support rod (41), a vertical movable support rod (42), a horizontal support rod (43) and a round tube clamping device (44); the vertical fixed support rod (41) is connected to the substrate support (1); the vertical fixed support rod (41) is connected to the vertical movable support rod (42); the top end of the vertical movable support rod (42) is connected to the horizontal support rod (43); the end of the horizontal support rod (43) is connected to the round tube clamping device (44); the neck of the funnel (5) is fixed in the round tube clamping device (44); the upper surface of the substrate support (1) is fixed with a surround shooting device (6); the surround shooting device (6) comprises a rotating frame (61), four groups of rotating frame brackets (62) and a photographing bracket (63).

2. A device for measuring the angle of accumulation of loose materials according to claim 1, characterized in that: The substrate support (1) is formed by connecting aluminum profiles and profile angle brackets. A total of 8 aluminum profiles are connected to each other on the upper surface of the substrate support (1) in the shape of vertical and horizontal lines in a "Pythagorean square diagram". The substrate fixing device guide rails (11) are the 4 aluminum profiles with grooves in the middle.

3. The device for measuring the angle of accumulation of bulk materials according to claim 1, characterized in that: The connecting plate (21) has a positioning protrusion and is slidably connected to the groove on the upper surface of the grooved aluminum profile of the guide rail (11) of the substrate fixing device. The supporting foot assembly (22) includes a supporting foot (2201) and a handle A (2202). The circular plane of the supporting foot (2201) faces upward. The screw of the supporting foot (2201) successively passes through the through hole of the positioning slot (23), is connected to the nut on the connecting plate (21), and is fixedly connected to the handle A (2202). A nut is provided on the screw of the supporting foot assembly (22) to fix the axial position of the positioning slot (23), so that the bottom of the groove of the positioning slot (23) is slightly lower than the top surface of the supporting foot assembly (22) and can rotate around its screw.

4. The device for measuring the angle of accumulation of loose materials according to claim 1, characterized in that: A "cross"-shaped reinforcing rib (32) is fixedly connected to the bottom of the test thin plate (31) of the base plate (3), and the cross section of the reinforcing rib (32) can be embedded in the groove of the positioning slot (23).

5. The device for measuring the angle of accumulation of bulk materials according to claim 1, characterized in that: The round tube clamping device (44) comprises a clamping device bottom plate (4401), a fixed clamping block (4402), a movable clamping block (4403), a guide rod (4404), a telescopic handle bolt C (4405) and a clamping handle bolt D (4406), wherein the fixed clamping block (4402) and the movable clamping block (4403) are both V-shaped plates, and a hole at the edge of the fixed clamping block (4402) and a nut at the edge of the movable clamping block (4403) are connected through the clamping handle bolt D (4406). ) is connected and fixes the neck position of the funnel (5), the clamping device base plate (4401) is connected to the fixed clamping block (4402) through a long hexagonal nut column, the telescopic handle bolt C (4405) is axially fixed to the clamping device base plate (4401) through a shaft ring and connected to the central threaded hole of the profile section of the horizontal support rod (43), and the guide rod (4404) is fixed to the clamping device base plate (4401) and forms a moving pair with the profile section hole of the horizontal support rod (43).

6. The device for measuring the angle of accumulation of loose materials according to claim 1, characterized in that: The rotating frame (61) is mainly composed of a hoop (6103) connected to the outer cylindrical surface of the square tube ring (6101) through a screw (6102); each rotating frame bracket (62) is composed of a pulley frame (6201), an adjustable pulley frame (6202), a movable bolt (6203), an adjusting nut (6204), a limit pulley (6205), two supporting pulleys (6206) and a plurality of bolt pairs; the two holes on the side of the adjustable pulley frame (6202) are respectively connected with the holes on the side of the pulley frame (6201) and the holes of the movable bolt (6203) to form a rotating pair, the movable bolt (6203) passes through the notch on the top of the pulley frame (6201) and is connected with the adjusting nut (6204), and the supporting pulley (6206) is installed at the lower part of the adjustable pulley frame (6202) and its axis is perpendicular to its side; L-shaped connection The plate (1204) and the pulley frame (6201) are successively installed at the top angle of the substrate support (1), and the installation holes of the pulley frame (6201) are parallel grooves; the limiting pulley (6205) and another supporting pulley (6206) are installed on the pulley frame (6201) and the rotation planes of the two supporting pulleys (6206) are on the same vertical plane, and the rotation plane of the limiting pulley (6205) is perpendicular to the above plane, and the above three pulleys simultaneously clamp one section of the rotating frame (61); the photo support (63) is composed of a central axis (6301) and a pan-tilt head (6302), the central axis (6301) is a tube that can be raised and lowered and fixed, the pan-tilt head (6302) can be connected to a camera or mobile phone support and adjust the angle with three degrees of freedom, and the central axis (6301) is fixed in the clamp (6103).

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