Testing device for measuring content of soft particles in coarse aggregate

Abstract

The utility model provides a testing device for measuring the content of soft particles in coarse aggregate. The testing device comprises a base, a supporting frame, a pressing mechanism, a placing disc and a rotating assembly, the supporting frame is arranged on the top of the base, and the pressing mechanism is arranged on the supporting frame and can extend towards the base. The rotating assembly is spherically connected to the top face of the base, and the containing disc is arranged at the rotating end of the rotating assembly and faces the pressing mechanism. The testing device for measuring the content of the soft particles in the coarse aggregate can press more to-be-measured objects at the same time, so that the to-be-measured objects can be stressed more uniformly.

Description

Technical Field

[0001] The utility model belongs to the technical field of soft and weak particle content of coarse aggregate, and in particular relates to a test device for measuring the soft and weak particle content of coarse aggregate. Background Art

[0002] In the construction of highways, railways, water conservancy and hydropower engineering, it is often necessary to determine the content of weak particles in coarse aggregate (crushed stone, gravel and crushed gravel) for cement concrete to ensure the construction quality of the project and the safety and reliability of the structure. The existing testing devices mainly include pressure testing machines. The steps for determining the content of weak particles in coarse aggregate are as follows: weigh 2kg (m1) of air-dried test pieces. If the particle size is greater than 31.5mm, weigh 4kg, and sieve them into 4.75mm-9.5mm, 9.5mm-16mm, and 16mm and above. Place each particle with the large surface facing down stably on the center of the press platform, and apply 0.15kN, 0.25kN, and 0.34kN loads according to the particle size. The broken particles are weak particles, which are discarded, and the mass of the unbroken particles (m2) and the content of weak particles are weighed.

[0003] Currently available testing devices mainly include pressure testing machines, which are used to test the soft particle content of coarse aggregate. However, the particles to be tested in the tray are of different sizes, so the pressure testing machine can squeeze fewer particles to be tested at the same time, and the particles to be tested are difficult to be squeezed evenly. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model proposes a test device for measuring the content of soft particles in coarse aggregate, so as to solve the technical problem mentioned in the background technology that the pressure testing machine can extrude a small number of particles to be tested at the same time.

[0005] In order to solve this technical problem, the technical solution adopted by the utility model is:

[0006] A test device for determining the soft particle content of coarse aggregate, comprising: a base, a support frame, a pressing mechanism, a placing plate and a rotating assembly;

[0007] The support frame is arranged on the top of the base, and the pressing mechanism is arranged on the support frame and can extend toward the base;

[0008] The rotating component is ball-connected to the top surface of the base, and the placement plate is arranged on the rotating end of the rotating component and faces the pressing mechanism.

[0009] Furthermore, an elastic support component is provided; the elastic support component is arranged on the base and connected to the placement plate, and the elastic support component can drive the placement plate to rotate and then reset.

[0010] Furthermore, a scraping mechanism is provided; the scraping mechanism is arranged on the support frame, and the scraping mechanism can contact the object to be tested in the placement plate and rotate.

[0011] Furthermore, the pressing mechanism includes a first hydraulic push rod, a force measuring ring, a dial indicator, a first connecting rod and a pressure plate; the first hydraulic push rod is arranged at the top of the support frame and can extend toward the base through the support frame; the force measuring ring is arranged at the telescopic end of the first hydraulic push rod, and the dial indicator is arranged in the force measuring ring; one end of the first connecting rod is connected to the force measuring ring, and the other end is connected to the pressure plate.

[0012] Furthermore, the rotating assembly includes a supporting sleeve, a movable ball and a second connecting rod; the supporting sleeve is arranged on the top of the base, the movable ball is connected to the supporting sleeve, and is connected to the placement plate through the second connecting rod.

[0013] Furthermore, the elastic support assembly includes a connecting tube, a return spring and a connecting plate; the connecting tube is arranged on the base, one end of the return spring is connected to the connecting tube, and the other end is connected to the connecting plate, and the connecting plate is connected to the bottom of the placement plate.

[0014] Furthermore, the scraping mechanism includes a second hydraulic push rod, a connecting box, a third hydraulic push rod, a third connecting rod, a motor and a scraper; the second hydraulic push rod is arranged on the side of the support frame and can extend toward the placement plate; the connecting box is arranged on the retractable end of the second hydraulic push rod, the third hydraulic push rod is arranged on the connecting box and is connected to the third connecting rod, and the third hydraulic push rod can drive the third connecting rod to rise and fall; the motor is arranged on the third connecting rod, and the scraper is arranged on the rotating end of the motor.

[0015] Furthermore, a plurality of legs and support seats are provided at the bottom of the base; the legs and the support seats correspond one to one, and the support seats are connected to the bottom of the base through the legs.

[0016] Furthermore, a compression sleeve is provided, which is threadedly connected to the support sleeve and can compress the movable ball.

[0017] Furthermore, a handle is provided on the outer surface of the compression sleeve.

[0018] Compared with the prior art, the advancement of this application is:

[0019] In the present application, the pressing mechanism is activated to squeeze the objects to be tested in the placement tray. Since the objects to be tested vary in size, the pressing mechanism will drive the rotating mechanism to rotate during the pressing process, so that the pressing mechanism can press more objects to be tested, thereby allowing each object to be subjected to force more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1 A schematic diagram of a test device for determining the soft particle content of coarse aggregate provided by an embodiment of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the pressing mechanism shown;

[0023] Figure 3 for Figure 1 Schematic diagram of the scraping mechanism involved.

[0024] Reference numerals:

[0025] Base 1,

[0026] Support frame 2,

[0027] Pressing mechanism 3, first hydraulic push rod 31, force ring 32, dial indicator 33, first connecting rod 34, pressure plate 35,

[0028] Place the plate 4.

[0029] Rotating assembly 5, supporting sleeve 51, movable ball 52, second connecting rod 53,

[0030] Elastic support assembly 6, connecting tube 61, return spring 62, connecting plate 63,

[0031] Scraping mechanism 7, second hydraulic push rod 71, connecting box 72, third hydraulic push rod 73, third connecting rod 74, motor 75, scraper 76,

[0032] Support leg 81, support seat 82, compression sleeve 91, handle 92. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0034] Please also read Figure 1-Figure 3, this embodiment provides a test device for determining the soft particle content of coarse aggregate, comprising: a base 1, a support frame 2, a pressing mechanism 3, a placement plate 4 and a rotating assembly 5;

[0035] The support frame 2 is arranged on the top of the base 1, and the pressing mechanism 3 is arranged on the support frame 2 and can extend toward the base 1; specifically, the support frame 2 is a U-shaped frame, and the opening faces the top of the base 1; the pressing mechanism 3 is passed through the top of the support frame 2, and specifically, the pressing mechanism 3 can be retracted vertically.

[0036] The rotating assembly 5 is ball-connected to the top surface of the base 1, and the placement plate 4 is arranged on the rotating end of the rotating assembly 5 and faces the pressing mechanism 3. It should be understood that the placement plate 4 is used to place the object to be tested, and the placement plate 4 can rotate with the rotating assembly 5.

[0037] In the present application, the pressing mechanism 3 is started to squeeze the objects to be tested in the placement tray 4. Since the objects to be tested are of different sizes, the pressing mechanism 3 will drive the rotating mechanism to rotate during the pressing process, so that the pressing mechanism 3 can press more objects to be tested at the same time, so that each object to be tested can be subjected to force more evenly.

[0038] In other schemes, an elastic support component 6 is further provided; the elastic support component 6 is provided on the base 1 and connected to the placement plate 4, and the elastic support component can drive the placement plate 4 to rotate and then reset. Specifically, the placement plate 4 is placed horizontally before the test begins, and the elastic support component can return the placement plate 4 to a horizontal state through its own elasticity after the rotation. Specifically, a plurality of elastic support components 6 are provided, and are axially arranged along the bottom of the placement plate 4.

[0039] In other schemes, a scraping mechanism 7 is further provided; the scraping mechanism 7 is provided on the support frame 2, and the scraping mechanism 7 can contact and rotate the object to be tested in the placement plate 4. The scraping mechanism 7 scrapes the object to be tested flat by contacting and rotating the object to be tested, so that the object to be tested is pressed more evenly.

[0040] In other schemes, the pressing mechanism 3 includes a first hydraulic push rod 31, a force ring 32, a dial indicator 33, a first connecting rod 34 and a pressure plate 35; the first hydraulic push rod 31 is arranged at the top of the support frame 2 and can extend toward the base 1 through the support frame 2; the force ring 32 is arranged at the telescopic end of the first hydraulic push rod 31, and the dial indicator 33 is arranged in the force ring 32; one end of the first connecting rod 34 is connected to the force ring 32, and the other end is connected to the pressure plate 35. It should be understood that the first connecting rod 34 and the first hydraulic push rod 31 are coaxial and point to the base 1 together, preferably vertically to the base 1; the force ring 32 is preferably detachably connected to the first hydraulic push rod 31, and the pressure plate 35 is preferably detachably connected to the first connecting rod 34, and the detachable connection can be connected by a detachable method such as bolts and screws. Through the dial indicator 33, the magnitude of the applied force can be clearly known. Preferably, the first hydraulic push rod 31 is an electric hydraulic push rod.

[0041] In other embodiments, the rotating assembly 5 includes a support sleeve 51, a movable ball 52 and a second connecting rod 53; the support sleeve 51 is arranged on the top of the base 1, the movable ball 52 is connected in the support sleeve 51, and is connected to the placement plate 4 through the second connecting rod 53. It should be understood that the support sleeve 51 and the first connecting rod 34 are coaxial, and in the initial state, the second connecting rod 53 and the first connecting rod 34 are coaxial.

[0042] In other embodiments, the elastic support assembly 6 includes a connecting tube 61, a return spring 62 and a connecting plate 63; the connecting tube 61 is arranged on the base 1, one end of the return spring 62 is connected to the connecting tube 61, and the other end is connected to the connecting plate 63, and the connecting plate 63 is connected to the bottom of the placement plate 4. Preferably, the placement plate 4 and the connecting plate 63 are detachably connected, and the axis of the return spring 62 is perpendicular to the base 1.

[0043] In other schemes, the scraping mechanism 7 includes a second hydraulic push rod 71, a connecting box 72, a third hydraulic push rod 73, a third connecting rod 74, a motor 75 and a scraper 76; the second hydraulic push rod 71 is arranged on the side of the support frame 2 and can be extended toward the placement plate 4; the connecting box 72 is arranged on the retractable end of the second hydraulic push rod 71, the third hydraulic push rod is arranged on the connecting box 72 and connected to the third connecting rod 74, and the third hydraulic push rod can drive the third connecting rod 74 to rise and fall; the motor 75 is arranged on the third connecting rod 74, and the scraper 76 is arranged on the rotating end of the motor 75. It should be understood that the second hydraulic push rod 71 drives the scraper 76 to approach or move away from the placement plate 4 in the horizontal direction, and the third hydraulic push rod 73 drives the scraper 76 to approach or move away from the placement plate 4 in the vertical direction. When the scraper 76 is located on the placement plate 4 and contacts the object to be tested, the scraper 76 can be scraped flat by starting the motor 75 to rotate. Specifically, the second hydraulic push rod 71 and the third hydraulic push rod 73 are electric push rods, and the motor 75 is a servo motor 75 .

[0044] In other embodiments, a plurality of legs 81 and support seats 82 are further provided at the bottom of the base 1; the legs 81 and the support seats 82 correspond one to one, and the support seats 82 are connected to the bottom of the base 1 through the legs 81. The base 1 can be better placed and supported by the legs 81 and the support seats 82.

[0045] In other embodiments, a compression sleeve 91 is further provided, which is threadedly connected to the support sleeve 51 and can compress the movable ball 52. Specifically, the outer surface of the support sleeve 51 is provided with an external thread, and the compression sleeve 91 can clamp the movable ball 52 by squeezing to control the range of movement of the movable ball 52.

[0046] In other embodiments, a handle 92 is further provided on the outer surface of the compression sleeve 91. The handle 92 can facilitate the rotation of the compression sleeve 91.

[0047] The above-mentioned test device for determining the soft particle content of coarse aggregate can press more objects to be tested at the same time, so that each object to be tested can be subjected to force more evenly.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A test device for determining the content of soft particles in coarse aggregate, characterized in that: include: Base, support frame, pressing mechanism, placement plate and rotating assembly; The support frame is arranged on the top of the base, and the pressing mechanism is arranged on the support frame and can extend toward the base; The rotating component is ball-connected to the top surface of the base, and the placement plate is arranged on the rotating end of the rotating component and faces the pressing mechanism.

2. A test device for determining the content of soft particles in coarse aggregate according to claim 1, characterized in that: An elastic support component is also provided; the elastic support component is arranged on the base and connected to the placement plate, and the elastic support component can drive the placement plate to rotate and then reset.

3. A test device for determining the content of soft particles in coarse aggregate according to claim 1, characterized in that: A scraping mechanism is also provided; the scraping mechanism is arranged on the supporting frame, and the scraping mechanism can contact the object to be tested in the placing plate and rotate.

4. A test device for determining the content of soft particles in coarse aggregate according to claim 1, characterized in that: The pressing mechanism includes a first hydraulic push rod, a force measuring ring, a dial indicator, a first connecting rod and a pressure plate; the first hydraulic push rod is arranged at the top of the support frame and can extend toward the base through the support frame; the force measuring ring is arranged at the telescopic end of the first hydraulic push rod, and the dial indicator is arranged in the force measuring ring; one end of the first connecting rod is connected to the force measuring ring, and the other end is connected to the pressure plate.

5. A test device for determining the content of soft particles in coarse aggregate according to claim 1, characterized in that: The rotating assembly includes a support sleeve, a movable ball and a second connecting rod; the support sleeve is arranged on the top of the base, the movable ball is connected to the support sleeve, and is connected to the placement plate through the second connecting rod.

6. A test device for determining the content of soft particles in coarse aggregate according to claim 2, characterized in that: The elastic support assembly includes a connecting tube, a reset spring and a connecting plate; the connecting tube is arranged on the base, one end of the reset spring is connected to the connecting tube, and the other end is connected to the connecting plate, and the connecting plate is connected to the bottom of the placement plate.

7. A test device for determining the content of soft particles in coarse aggregate according to claim 3, characterized in that: The scraping mechanism includes a second hydraulic push rod, a connecting box, a third hydraulic push rod, a third connecting rod, a motor and a scraper; the second hydraulic push rod is arranged on the side of the support frame and can be extended toward the placement plate; the connecting box is arranged on the retractable end of the second hydraulic push rod, the third hydraulic push rod is arranged on the connecting box and is connected to the third connecting rod, and the third hydraulic push rod can drive the third connecting rod to rise and fall; the motor is arranged on the third connecting rod, and the scraper is arranged on the rotating end of the motor.

8. A test device for determining the content of soft particles in coarse aggregate according to claim 1, characterized in that: A plurality of legs and a support seat are also provided at the bottom of the base; the legs and the support seats correspond one to one, and the support seat is connected to the bottom of the base through the legs.

9. A test device for determining the content of soft particles in coarse aggregate according to claim 5, characterized in that: A compression sleeve is also provided, which is threadedly connected to the support sleeve and can compress the movable ball.

10. A test device for determining the content of soft particles in coarse aggregate according to claim 9, characterized in that: The outer surface of the compression sleeve is also provided with a handle.

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