Concrete slump detection device

Abstract

The invention discloses a concrete slump detection device, and belongs to the technical field of concrete production and processing. Comprising a driving unit, a detecting unit, a weighing unit and a forming unit, when a fitting vertical rod is in an inclined state, a constructor can pour concrete on the outer end face of the fitting vertical rod, the constructor can more visually evaluate the fluidity and plasticity of the concrete through the natural falling speed and the solid-liquid separation state of the concrete, and the construction efficiency is improved. When the upper detection plate is pressed downwards in a detection state, the bottom end face of the detection plate presses the concrete subjected to slump detection downwards, the fluidity and plasticity of the concrete in the construction process can be simulated by pressing the upper portion of the concrete, and the slump of the concrete can be evaluated by measuring the change of the concrete under pressure.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production and processing, and in particular to a concrete slump detection device. Background Art

[0002] Concrete slump is an important indicator to measure the plasticity and pumpability of concrete. It mainly affects the fluidity, cohesion and water retention of concrete, which together determine whether the concrete is easy to construct and uniformly dense. The method for measuring slump includes using a bucket of a specific shape to conduct a test, and judging the slump value by measuring the height of the concrete collapse under its own weight. The selection of this value needs to consider many factors, including the structural requirements of the building, the content of steel bars, transportation and pouring conditions, etc. In actual construction, the control of slump is crucial to ensure the quality of concrete and the smooth progress of construction. The concrete slump detection device is one of the indispensable equipment.

[0003] Patent No. CN202111214279.X discloses a concrete slump detection device, which includes a support base, a support bottom plate is arranged on the upper surface of the support base, a detection cylinder is arranged on the upper surface of the support bottom plate, a support beam A is connected to the outer surface of the detection cylinder, the outer end of the support beam A is connected to the lifting mechanism A, a box is fixed on the upper surface of the support beam A, a push plate is arranged inside the box, the push plate is connected to the inner side surface of the box by sliding up and down, and the lower surface of the push plate is connected to the support beam A by the lifting mechanism B is connected, a discharge port facing the detection cylinder is arranged on the side of the box body, the discharge port is located above the feed port at the top end of the detection cylinder, a pressing mechanism is arranged above the detection cylinder, the top end of the pressing mechanism is connected to the supporting beam B through a telescopic mechanism A, the two ends of the supporting beam B are connected to the supporting base through a lifting mechanism C respectively, the two ends of the supporting beam A and the supporting beam B are respectively connected in the guide groove A and the guide groove B on the inner side surface of the supporting column by sliding up and down, and the support column is fixedly connected to the upper surface of the supporting base.

[0004] The above patent saves time and effort when testing the slump of concrete, has a good concrete compaction effect and a high accuracy of the detection structure; however, it cannot simulate the fluidity and plasticity of concrete during the construction process, and cannot evaluate the slump of concrete by measuring the changes in concrete under pressure. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a concrete slump detection device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A concrete slump detection device comprises a driving unit, a detection unit, a weighing unit and a molding unit, wherein four groups of driving units are clamped by the detection unit, and the weighing unit is arranged on the upper end surface of the driving unit and the detection unit, and the detection unit comprises a detection plate and an upper protrusion arranged in the middle of the upper end surface of the detection plate, and positioning holes are arranged at the four corners of the upper end surface of the detection plate, and the upper and lower detection plates are connected by an elastic rod, and because the detection plate is subjected to downward pressing pressure as a whole, the detection plate as a whole can be vertically lowered and adjusted along the connecting column as a fulcrum, and at the same time, the construction personnel surround the configured concrete along the outer ring of the elastic rod and invert it on the upper part of the lower detection plate, and when the upper detection plate is pressed downward in the detection state, the bottom end surface of the detection plate presses downward on the concrete subjected to slump detection, and by pressing the upper part of the concrete, its fluidity and plasticity during the construction process can be simulated, and by measuring the change of the concrete under pressure, its slump can be evaluated;

[0008] Concrete will deform when it is pressed. This is one of the main purposes of slump testing, that is, to measure the degree of deformation of concrete under a specific pressure. At this time, the aggregate and cement paste inside the concrete may rearrange under the action of pressure, causing the structure of the concrete to change. If the concrete mix ratio is not appropriate, pressing will cause the internal moisture to float up, forming a water film or water spot. Contrary to the floating of moisture, heavier aggregates may sink under pressure. Concrete contains air during the mixing process. These air bubbles will be squeezed out when pressed, affecting the final volume and strength of the concrete. Construction workers observe the reaction of the concrete and make a preliminary assessment of the final strength and durability of the concrete. Based on the performance of the concrete after pressing, construction workers can adjust the concrete mix ratio, such as increasing or decreasing the amount of cement, water or aggregate to achieve the desired working performance.

[0009] Preferably, the driving unit comprises a supporting mechanism and an auxiliary mechanism clamped between the supporting mechanisms, the inner cavity of the supporting mechanism is interspersed with an adjustment mechanism, and the inner end surfaces of four groups of the supporting mechanisms are clamped with detection units;

[0010] The support mechanism includes a frame and insertion slots arranged at the upper and lower edges of the frame. A cavity is opened in the middle of the frame, and edge openings are arranged at the outer end surface of the cavity. Two adjacent groups of the frame are fitted with the outer end surface of the matching frame.

[0011] Preferably, the auxiliary mechanism includes an auxiliary frame and a sample cavity opened on both sides of the inner end surface of the auxiliary frame, the upper and lower groups of the auxiliary frames are connected by a connecting column, the auxiliary frame is inserted into the inner cavity of the insertion groove, so that the supporting mechanism and the auxiliary mechanism form a whole, the connecting column vertically penetrates the inner cavity of the insertion positioning hole, so that the auxiliary mechanism and the detection unit become a whole, when it is necessary to detect the slump of concrete in a flat state, the construction personnel can remove the auxiliary mechanism, lay the auxiliary frame and the sample cavity horizontally on a flat ground, and block the concrete through the inner end surface of the auxiliary frame and the connecting column, when the concrete is poured into the auxiliary mechanism, a detachable mold is pre-placed in the inner cavity of the sample cavity, the opening of the sample cavity can obtain samples of the concrete that is detached during the slump process, after completing the flat state measurement, the construction personnel splice the auxiliary mechanism as a whole to the initial state, so that the concrete is statically formed in the static space formed between the sample cavity and the insertion groove, after the measurement work is completed, the mold is removed from the inner cavity of the sample cavity, so that the construction personnel can check the state of the concrete after forming without hindering the overall detection process.

[0012] Preferably, the adjustment mechanism includes a downward pressing vertical rod and a bearing block arranged at the top position of the downward pressing vertical rod, the bottom of the downward pressing vertical rod is connected to the connecting piece through a reinforcing block, the adjustment mechanism also includes a fitting vertical rod arranged on the other side of the upper end surface of the connecting piece, a limiting ear block is arranged on the top of the fitting vertical rod, elastic parts are arranged on both sides of the inner end surface of the limiting ear block, and the limiting ear block and the downward pressing vertical rod are connected in series through a connecting belt.

[0013] Preferably, the downward pressing vertical rod is vertically inserted into the inner cavity of the matching frame, the recessed position of the upper end surface of the connecting piece is against the lower end surface of the frame body, and the fitting vertical rod is inserted into the inner cavity of the edge opening as a whole. When the top of the supporting block is pressed, the downward pressing vertical rod is subjected to its continuous pressing force to transmit force to the connecting piece downward through the reinforcing block. Because the bottom position of the connecting piece away from the reinforcing block contacts the bottom position of the edge opening, when the reinforcing block is pressed downward, the other end of the connecting piece will be lifted up due to the seesaw effect, thereby driving the fitting vertical rod to adjust the inward angle with the upper end surface of the connecting piece as the fulcrum, and the limit distance between the downward pressing vertical rod and the limiting ear block is controlled by the transversely arranged connecting belt At this time, the elastic part of the limit ear block set on the outside will contact the outer end face of the cavity, and the weight of the concrete can be measured by the set linkage structure until the side end face of the fitting vertical rod fits the inner wall of the cavity. The limit ear block in the deformed state will deflect inward until its outer end face fits the inner wall of the cavity. This time is set as the weight of the concrete reaching the measurement standard value. The staff will disassemble the weighing unit from the device body, hold the two sides of the weighing plate and tilt the discharge end toward the top of the upper convex part. At this time, the concrete can be laid on the upper end face of the detection plate through the upper convex part, and the concrete will appear in the shape of a raised peak, so as to observe the slump of concrete under normal conditions.

[0014] And when the fitting vertical rod is in an inclined state, the construction workers can pour concrete on the outer end surface of the fitting vertical rod. Through the natural falling speed of the concrete and the state of solid-liquid separation, the construction workers can more intuitively evaluate the fluidity and plasticity of the concrete.

[0015] Preferably, the weighing unit comprises a weighing plate and limit baffles arranged transversely on both sides of the upper end face edge of the weighing plate, a lower pressure cylinder is vertically arranged at the middle position of the bottom of the weighing plate, the lower pressure cylinder is inserted into the top of the upper convex part from top to bottom, the whole device is placed on a flat place on the construction site, and the concrete that needs to be tested for slump is poured just above the weighing unit. The limit baffles arranged on both sides of the upper end face edge of the weighing plate can block the lateral position of the inverted concrete, which is convenient for construction workers to better fill the concrete. The concrete can maintain a certain mound-like structure and be placed on the upper end face of the weighing plate. At this time, the slump direction of the concrete is controlled to prevent unnecessary displacement or deformation of the concrete during the measurement process, thereby ensuring the stability of the concrete weight measurement;

[0016] At this time, the concrete has a certain downward pressure, and the downward pressure of the concrete presses the weighing plate downward. The downward pressure cylinder arranged at the bottom of the weighing plate is given a downward vertical pressure, so that the downward pressure cylinder continues to press downward on the top of the pressure-receiving detection unit. Since the weighing plate as a whole is supported by multiple groups of adjustment mechanisms arranged vertically upward, the weighing unit as a whole will fall vertically downward.

[0017] The device simulates the load conditions of concrete in actual construction through the downward pressure of concrete, which helps to more realistically evaluate the slump and stability of concrete in the laboratory or on-site. The vertical pressure exerted by the downward pressure cylinder at the bottom of the weighing plate can accurately control the vertical pressure on the concrete to ensure the consistency and repeatability of the slump test;

[0018] The device's multiple groups of adjustment mechanisms set vertically upward provide solid support, which can keep the overall structure stable even when pressure is applied to the concrete, avoiding accidental movement or deformation during the measurement process. As the pressure cylinder continues to press downward, the adjustment mechanism will fall vertically downward as a whole, reducing human intervention and improving the objectivity of the measurement.

[0019] Preferably, the molding unit includes a molding assembly box and a molding cylindrical half-cylinder opened at the interval between the two groups of molding assembly boxes, the two groups of molding assembly boxes are vertically inserted into the inner cavity of the cavity, when the construction personnel need to test the collapse of the concrete in the cylindrical molding state, the adjustment mechanism is removed from the device, the two groups of molding assembly boxes are relatively inserted from top to bottom, and the concrete is poured into the inner cavity of the molding cylindrical half-cylinder, so that the concrete is cylindrically formed in the inner cavity of the molding cylindrical half-cylinder, and after pouring for a certain period of time, the molding unit is taken out from the inner cavity of the cavity, and the state of the concrete in the molding cylindrical half-cylinder is observed, so as to visually evaluate the state of the concrete during molding, and the molding quality and slump of the concrete can be intuitively understood. The detection process simulates the cylindrical molding state of concrete in actual construction, which is helpful to predict the performance of concrete in construction.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By applying pressure vertically downward through the pressure cylinder at the bottom of the weighing plate, the vertical pressure on the concrete can be accurately controlled to ensure the consistency and repeatability of the slump test, reduce human intervention, and improve the objectivity of the measurement.

[0022] 2. The staff will disassemble the weighing unit from the device body, hold the two sides of the weighing plate and tilt the discharge end toward the top of the upper convex part. At this time, the concrete can be laid on the upper end surface of the test plate by surrounding it through the set upper convex part. The concrete will appear as a raised peak, so as to observe the slump of concrete under normal conditions.

[0023] 3. When the fitting vertical rod is in an inclined state, the construction workers can pour concrete on the outer end surface of the fitting vertical rod. Through the natural falling speed of the concrete and the state of solid-liquid separation, the construction workers can more intuitively evaluate the fluidity and plasticity of the concrete.

[0024] 4. When the upper test plate is pressed downward in the test state, the bottom end of the test plate presses downward on the concrete being tested for slump. By pressing the top of the concrete, its fluidity and plasticity during the construction process can be simulated, and its slump can be evaluated by measuring the changes of the concrete under pressure.

[0025] 5. The opening of the sample cavity can obtain samples of concrete that has detached during the collapse process. After completing the measurement of the flattening state, the construction personnel will splice the auxiliary mechanism as a whole to the initial state, so that the concrete can be statically formed in the static space formed between the sample cavity and the insertion groove. After the measurement work is completed, the mold is removed from the inner cavity of the sample cavity, so that the construction personnel can check the state of the concrete after forming without interfering with the overall detection process.

[0026] 6. Concrete is formed into a cylinder in the inner cavity of the forming cylindrical half-cylinder. After pouring for a certain period of time, the forming unit is taken out from the inner cavity of the cavity to observe the state of the concrete in the forming cylindrical half-cylinder, so as to visually evaluate the state of the concrete during molding, and intuitively understand the molding quality and slump of the concrete. This detection process simulates the cylindrical molding state of concrete in actual construction, which helps to predict the performance of concrete in construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a concrete slump detection device proposed by the present invention;

[0028] Figure 2 A schematic diagram of the combined structure of a driving unit and a detection unit of a concrete slump detection device proposed by the present invention;

[0029] Figure 3 A schematic diagram of the combined structure of a support mechanism, an auxiliary mechanism and an adjustment mechanism of a concrete slump detection device proposed by the present invention;

[0030] Figure 4 A schematic diagram of the support structure of a concrete slump detection device proposed by the present invention;

[0031] Figure 5 A schematic diagram of the combined structure of a support mechanism and an adjustment mechanism of a concrete slump detection device proposed by the present invention;

[0032] Figure 6 A schematic diagram of the structure of an adjustment mechanism of a concrete slump detection device proposed by the present invention;

[0033] Figure 7 A schematic diagram of the auxiliary mechanism structure of a concrete slump detection device proposed by the present invention;

[0034] Figure 8 A schematic diagram of the structure of a detection unit of a concrete slump detection device proposed by the present invention;

[0035] Fig. 9 A schematic diagram of the structure of a weighing unit of a concrete slump detection device proposed by the present invention;

[0036] Fig.10 The present invention provides a schematic structural diagram of a molding unit of a concrete slump detection device.

[0037] In the figure: 1. driving unit; 11. supporting mechanism; 111. frame; 112. insertion slot; 113. cavity; 114. edge opening; 115. matching frame; 12. auxiliary mechanism; 121. auxiliary frame; 122. sample cavity; 123. connecting column; 13. adjusting mechanism; 131. pressing vertical rod; 132. bearing block; 133. reinforcing block; 134. connecting piece; 135. fitting vertical rod; 136. limiting ear block; 137. elastic member; 138. connecting belt; 2. detection unit; 21. detection plate; 22. upper protrusion; 23. positioning hole; 24. elastic rod; 3. weighing unit; 31. weighing plate; 32. limiting baffle; 33. pressing cylinder; 4. molding unit; 41. molding assembly box; 42. molding cylindrical half cylinder. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1-Figure 10 Embodiment 1: A concrete slump detection device comprises a driving unit 1, a detection unit 2, a weighing unit 3 and a molding unit 4. The four driving units 1 are clamped by the detection unit 2. The weighing unit 3 is arranged on the upper end surface of the driving unit 1 and the detection unit 2. The detection unit 2 comprises a detection plate 21 and an upper protrusion 22 arranged in the middle of the upper end surface of the detection plate 21. Positioning holes 23 are arranged at the four corners of the upper end surface of the detection plate 21. The upper and lower detection plates 21 are connected by an elastic rod 24, and the detection plate 21 is pressed downward as a whole. Pressure, the detection plate 21 as a whole can be adjusted vertically downward along the connecting column 123 as a fulcrum. At the same time, the construction personnel will put the configured concrete around the outer ring of the elastic rod 24 and invert it above the lower detection plate 21. When the upper detection plate 21 is pressed downward in the detection state, the bottom end surface of the detection plate 21 presses downward on the concrete under slump detection. By pressing the upper part of the concrete, its fluidity and plasticity during the construction process can be simulated, and its slump can be evaluated by measuring the changes of the concrete under pressure;

[0040] Example 2: Concrete will deform when pressed, which is one of the main purposes of slump testing, that is, to measure the degree of deformation of concrete under a specific pressure. At this time, the aggregate and cement paste inside the concrete may be rearranged under pressure, causing changes in the structure of the concrete. If the concrete mixing ratio is improper, pressing will cause the internal moisture to float up, forming a water film or water spot. Contrary to the floating of moisture, heavier aggregates may sink under pressure. Concrete contains air during the mixing process. These air bubbles will be squeezed out when pressed, affecting the final volume and strength of the concrete. Construction workers observe the reaction of the concrete and make a preliminary assessment of the final strength and durability of the concrete. According to the performance of the concrete after pressing, construction workers can adjust the proportion of the concrete, such as increasing or decreasing the amount of cement, water or aggregate, to achieve the desired working performance.

[0041] Embodiment 3: The driving unit 1 comprises a supporting mechanism 11 and an auxiliary mechanism 12 clamped between the supporting mechanisms 11, an adjusting mechanism 13 is inserted into the inner cavity of the supporting mechanism 11, and the inner end surfaces of the four groups of supporting mechanisms 11 are clamped with the detection unit 2, the supporting mechanism 11 comprises a frame 111 and an insertion groove 112 arranged at the upper and lower edges of the frame 111, a cavity 113 is provided in the middle position of the frame 111, and an edge opening 114 is provided at the outer end surface of the cavity 113, and the outer end surface of the matching frame 115 is fitted between two adjacent frames 111;

[0042] The auxiliary mechanism 12 includes an auxiliary frame 121 and sample cavities 122 opened on both sides of the inner end surface of the auxiliary frame 121. The upper and lower sets of auxiliary frames 121 are connected by connecting columns 123. The auxiliary frame 121 is inserted into the inner cavity of the insertion groove 112, so that the support mechanism 11 and the auxiliary mechanism 12 form a whole. The connecting column 123 vertically penetrates the inner cavity of the insertion positioning hole 23, so that the auxiliary mechanism 12 and the detection unit 2 become a whole. When it is necessary to detect the slump of concrete in a flat state, the construction personnel can remove the auxiliary mechanism 12, lay the auxiliary frame 121 and the sample cavity 122 horizontally on the flat ground, and pass the auxiliary frame 112 to the auxiliary mechanism 121. 21 and the inner end surface of the connecting column 123 block the concrete. When the concrete is poured into the auxiliary mechanism 12, a detachable mold is pre-placed in the inner cavity of the sample cavity 122. The opening of the sample cavity 122 can obtain samples of the concrete that is detached during the collapse process. After completing the flat state measurement, the construction personnel splice the auxiliary mechanism 12 as a whole to the initial state, so that the concrete is statically formed in the static space formed between the sample cavity 122 and the insertion groove 112. After the measurement work is completed, the mold is removed from the inner cavity of the sample cavity 122, so that the construction personnel can check the state of the concrete after forming without hindering the overall detection process.

[0043] Embodiment 4: The adjustment mechanism 13 includes a downward pressing vertical rod 131 and a bearing block 132 disposed at the top of the downward pressing vertical rod 131 , and the bottom of the downward pressing vertical rod 131 is connected to the connecting piece 134 through a reinforcing block 133 ;

[0044] The adjustment mechanism 13 further includes a fitting vertical rod 135 disposed on the other side of the upper end surface of the connecting piece 134, a limiting ear block 136 is disposed on the top of the fitting vertical rod 135, and elastic members 137 are disposed on both sides of the inner end surface of the limiting ear block 136, and the limiting ear block 136 is connected in series with the downward pressing vertical rod 131 through a connecting belt 138;

[0045] The pressing vertical rod 131 is vertically inserted into the inner cavity of the matching frame 115, and the upper end surface of the connecting piece 134 is recessed at the position against the lower end surface of the frame body 111, and the fitting vertical rod 135 is inserted into the inner cavity of the edge opening 114 as a whole. When the top of the bearing block 132 is pressed, the pressing vertical rod 131 is subjected to its continuous pressing force to transmit the force to the connecting piece 134 downward through the reinforcing block 133. Because the bottom position of the connecting piece 134 away from the reinforcing block 133 is in contact with the bottom position of the edge opening 114, when the reinforcing block 133 is pressed downward, the other end of the connecting piece 134 will be lifted up due to the seesaw effect, thereby driving the fitting vertical rod 135 to adjust the inward angle with the upper end surface of the connecting piece 134 as the fulcrum, and the pressing vertical rod 131 and the limiting ear block 13 are connected by the transversely arranged connecting belt 138. 6 is controlled, at this time, the elastic member 137 of the limit ear block 136 arranged on the outside will contact the outer end face of the cavity 113, and the weight of the concrete can be measured by the arranged linkage structure until the side end face of the fitting vertical rod 135 fits to the inner wall of the cavity 113, and the limit ear block 136 in the deformed state will deflect inwardly until its outer end face fits to the inner wall of the cavity 113, and this time is set as the weight of the concrete reaching the measurement standard value. The staff disassembles the weighing unit 3 from the device body, holds the two sides of the weighing plate 31 and tilts the discharging end toward the top of the upper protrusion 22. At this time, the concrete can be laid on the upper end face of the detection plate 21 around it through the arranged upper protrusion 22, and the concrete presents a raised peak shape, so as to observe the slump of the concrete under normal conditions.

[0046] Embodiment 5: When the fitting vertical rod 135 is in an inclined state, the construction workers can pour concrete on the outer end surface of the fitting vertical rod 135. Through the natural falling speed of the concrete and the state of solid-liquid separation, the construction workers can more intuitively evaluate the fluidity and plasticity of the concrete.

[0047] Embodiment 6: The weighing unit 3 includes a weighing plate 31 and limit baffles 32 arranged horizontally on both sides of the upper end edge of the weighing plate 31. A lower pressure cylinder 33 is vertically arranged in the middle position of the bottom of the weighing plate 31. The lower pressure cylinder 33 is inserted into the top of the upper protrusion 22 from top to bottom. The entire device is placed on a flat place on the construction site, and the concrete that needs to be tested for slump is poured directly above the weighing unit 3. The limit baffles 32 arranged on both sides of the upper end edge of the weighing plate 31 can block the lateral position of the inverted concrete, which is convenient for construction workers to better fill the concrete. The concrete can maintain a certain mound-like structure and be placed on the upper end surface of the weighing plate 31. At this time, the collapse direction of the concrete is controlled to prevent unnecessary displacement or deformation of the concrete during the measurement process, thereby ensuring the stability of the concrete weight measurement.

[0048] Embodiment 7: At this time, the concrete has a certain downward pressure, and the downward pressure of the concrete presses the weighing plate 31 downward. The downward pressure cylinder 33 arranged at the bottom of the weighing plate 31 gives the downward vertical pressure to the downward pressure cylinder 33, so that the downward pressure cylinder 33 continuously presses downward just above the pressured detection unit 2. Since the weighing plate 31 is supported as a whole by multiple groups of adjustment mechanisms 13 arranged vertically upward, the weighing unit 3 as a whole will fall vertically downward.

[0049] The device simulates the load conditions of concrete in actual construction through the downward pressure of concrete, which helps to more realistically evaluate the slump and stability of concrete in the laboratory or on-site. The vertical pressure exerted by the downward pressure cylinder 33 at the bottom of the weighing plate 31 can be accurately controlled to ensure the consistency and repeatability of the slump test.

[0050] Embodiment 8: The multiple groups of adjustment mechanisms 13 arranged vertically upward of the device provide a solid support, which can maintain the stability of the overall structure even when pressure is applied to the concrete, avoiding accidental movement or deformation during the measurement process. As the downward pressure cylinder 33 continues to press downward, the adjustment mechanism 13 will fall vertically downward as a whole, reducing human intervention and improving the objectivity of the measurement.

[0051] Embodiment 9: The molding unit 4 includes a molding assembly box 41 and a molding cylindrical half-cylinder 42 opened at the interval between two sets of molding assembly boxes 41. The two sets of molding assembly boxes 41 are vertically inserted into the inner cavity of the cavity 113. When the construction personnel need to test the collapse of the concrete in the cylindrical molding state, the adjustment mechanism 13 is removed from the device, and the two sets of molding assembly boxes 41 are relatively inserted from top to bottom, and the concrete is poured into the inner cavity of the molding cylindrical half-cylinder 42, so that the concrete is cylindrically formed in the inner cavity of the molding cylindrical half-cylinder 42. After pouring for a certain period of time, the molding unit 4 is taken out of the inner cavity of the cavity 113 as a whole, and the state of the concrete in the molding cylindrical half-cylinder 42 is observed, so as to visually evaluate the state of the concrete during molding, and the molding quality and slump of the concrete can be intuitively understood. The detection process simulates the cylindrical molding state of concrete in actual construction, which is helpful to predict the performance of concrete in construction.

[0052] In summary: a concrete slump detection device comprises a driving unit 1, a detection unit 2, a weighing unit 3 and a forming unit 4, four groups of driving units 1 are clamped by the detection unit 2, the weighing unit 3 is arranged on the upper end surface of the driving unit 1 and the detection unit 2, the detection unit 2 comprises a detection plate 21 and an upper protrusion 22 arranged in the middle of the upper end surface of the detection plate 21, positioning holes 23 are arranged at the four corners of the upper end surface of the detection plate 21, and the upper and lower groups of detection plates 21 are connected by an elastic rod 24. The whole device is placed on a flat place on the construction site, and the concrete that needs to be tested for slump is poured just above the weighing unit 3. The limit baffles 32 arranged on both sides of the upper end surface edge of the weighing plate 31 can block the lateral position of the inverted concrete, so that the construction personnel can better fill the concrete. The concrete can maintain a certain mound-like structure and be placed on the upper end surface of the weighing plate 31. At this time, the collapse direction of the concrete is controlled to prevent the concrete from unnecessary displacement or deformation during the measurement process, thereby ensuring the stability of the concrete weight measurement;

[0053] At this time, the concrete has a certain downward pressure, and the downward pressure of the concrete presses the weighing plate 31 downward. The downward pressure cylinder 33 arranged at the bottom of the weighing plate 31 gives the downward vertical pressure to the downward pressure cylinder 33, so that the downward pressure cylinder 33 continuously presses downward just above the pressured detection unit 2. Since the weighing plate 31 is supported by multiple groups of adjustment mechanisms 13 arranged vertically upward as a whole, the weighing unit 3 will fall vertically downward as a whole.

[0054] The device simulates the load conditions of concrete in actual construction through the downward pressure of concrete, which helps to more realistically evaluate the slump and stability of concrete in the laboratory or on-site. The vertical pressure exerted by the downward pressure cylinder 33 at the bottom of the weighing plate 31 can accurately control the vertical pressure on the concrete to ensure the consistency and repeatability of the slump test;

[0055] The multiple groups of adjustment mechanisms 13 arranged vertically upwards of the device provide a stable support, and even when the concrete is under pressure, the overall structure can be kept stable to avoid accidental movement or deformation during the measurement process. As the downward pressure cylinder 33 continues to press downwards, the adjustment mechanism 13 as a whole will fall vertically downwards, which reduces human intervention and improves the objectivity of the measurement.

[0056] When the top of the bearing block 132 is pressed, the downward pressing vertical rod 131 is subjected to its continuous pressing force to transmit force downward to the connecting piece 134 through the reinforcing block 133. Because the bottom position of the connecting piece 134 away from the reinforcing block 133 is in contact with the bottom position of the edge opening 114, when the reinforcing block 133 is pressed downward, the other end of the connecting piece 134 will be lifted up due to the seesaw effect, thereby driving the fitting vertical rod 135 to adjust the inward angle with the upper end surface of the connecting piece 134 as the fulcrum, and the limit distance between the downward pressing vertical rod 131 and the limiting ear block 136 is controlled by the transversely arranged connecting belt 138. At this time, the elastic member 137 arranged on the outside of the limiting ear block 136 will contact The outer end face of the cavity 113 can measure the weight of the concrete through the provided linkage structure until the side end face of the fitting vertical rod 135 fits the inner wall of the cavity 113, and the limit ear block 136 in the deformed state will deflect inward until its outer end face fits the inner wall of the cavity 113. This time is set as the weight of the concrete reaching the measurement standard value. The staff disassembles the weighing unit 3 from the device body, holds both sides of the weighing plate 31 and tilts the discharge end toward the top of the upper protrusion 22. At this time, the concrete can be laid on the upper end face of the detection plate 21 around the provided upper protrusion 22, and the concrete presents a raised peak shape, so as to observe the slump of the concrete under normal conditions.

[0057] When the fitting vertical rod 135 is in an inclined state, the construction workers can pour concrete on the outer end surface of the fitting vertical rod 135. Through the natural falling speed of the concrete and the state of solid-liquid separation, the construction workers can more intuitively evaluate the fluidity and plasticity of the concrete.

[0058] And because the detection plate 21 is subjected to downward pressure as a whole, the detection plate 21 can be adjusted vertically downward along the connecting column 123 as a fulcrum. At the same time, the construction personnel will invert the configured concrete along the outer ring of the elastic rod 24 on the top of the lower detection plate 21. When the upper detection plate 21 is pressed downward in the detection state, the bottom end surface of the detection plate 21 presses downward on the concrete subjected to slump detection. By pressing the top of the concrete, its fluidity and plasticity during the construction process can be simulated, and its slump can be evaluated by measuring the changes of the concrete under pressure.

[0059] Concrete will deform when it is pressed. This is one of the main purposes of slump testing, that is, to measure the degree of deformation of concrete under a specific pressure. At this time, the aggregates and cement paste inside the concrete may rearrange under the pressure, causing the structure of the concrete to change. If the concrete mix ratio is not appropriate, pressing will cause the internal water to float up, forming a water film or water spot. Contrary to the floating of water, heavier aggregates may sink under pressure. Concrete contains air during the mixing process. These air bubbles will be squeezed out when pressed, affecting the final volume and strength of the concrete. Construction workers observe the reaction of the concrete and make a preliminary assessment of the final strength and durability of the concrete. Based on the performance of the concrete after pressing, construction workers can adjust the concrete mix ratio, such as increasing or decreasing the amount of cement, water or aggregates, to achieve the required working performance;

[0060] When it is necessary to test the slump of concrete in a flat state, the construction personnel can remove the auxiliary mechanism 12, lay the auxiliary frame 121 and the sample cavity 122 horizontally on the flat ground, and block the concrete through the inner end surface of the auxiliary frame 121 and the connecting column 123. When the concrete is poured into the auxiliary mechanism 12, a detachable mold is pre-placed in the inner cavity of the sample cavity 122. The opening of the sample cavity 122 can obtain samples of the concrete that is detached during the slump process. After completing the flat state measurement, the construction personnel splice the auxiliary mechanism 12 as a whole to the initial state, so that the concrete is statically formed in the static space formed between the sample cavity 122 and the insertion groove 112. After the measurement work is completed, the mold is removed from the inner cavity of the sample cavity 122, so that the construction personnel can check the state of the concrete after forming without hindering the overall detection process.

[0061] When construction workers need to test the collapse of concrete in a cylindrical state, they remove the adjustment mechanism 13 from the device, insert the two sets of forming assembly boxes 41 from top to bottom, and pour the concrete into the inner cavity of the forming cylindrical half-cylinder 42 to form the concrete into a cylinder in the inner cavity of the forming cylindrical half-cylinder 42. After pouring for a certain period of time, the molding unit 4 is taken out of the inner cavity of the cavity 113 to observe the state of the concrete in the forming cylindrical half-cylinder 42, so as to visually evaluate the state of the concrete during molding, so as to intuitively understand the molding quality and slump of the concrete. The detection process simulates the cylindrical molding state of concrete in actual construction, which is helpful to predict the performance of concrete in construction.

[0062] The above is the entire working principle of the present invention.

[0063] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated.

[0064] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0065] In the present invention, unless otherwise specified, the directional words contained in the terms such as "up, down, left, right, front, back, inside, outside, vertical, horizontal" only represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, number series nouns such as "first", "second" and "third" do not represent specific quantities and orders, but are merely used to distinguish names. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or equipment.

Claims

1. A concrete slump detection device, comprising a driving unit (1), a detection unit (2), a weighing unit (3) and a molding unit (4), wherein four groups of the driving units (1) are clamped by the detection unit (2), and the weighing unit (3) is arranged on the upper end surface of the driving unit (1) and the detection unit (2), characterized in that: The detection unit (2) comprises a detection plate (21) and an upper protrusion (22) arranged in the middle of the upper end surface of the detection plate (21); positioning holes (23) are provided at four corners of the upper end surface of the detection plate (21); and the upper and lower sets of the detection plates (21) are connected via elastic rods (24).

2. A concrete slump detection device according to claim 1, characterized in that: The driving unit (1) comprises a supporting mechanism (11) and an auxiliary mechanism (12) clamped between the supporting mechanisms (11); an adjustment mechanism (13) is inserted into the inner cavity of the supporting mechanism (11); and four groups of detection units (2) are clamped on the inner end surfaces of the supporting mechanisms (11).

3. A concrete slump detection device according to claim 2, characterized in that: The support mechanism (11) comprises a frame body (111) and insertion slots (112) arranged at the upper and lower edges of the frame body (111); a cavity (113) is provided in the middle of the frame body (111); an edge opening (114) is provided at the outer end surface of the cavity (113); and two adjacent groups of the frame bodies (111) are fitted with the outer end surface of the matching frame (115).

4. A concrete slump detection device according to claim 3, characterized in that: The auxiliary mechanism (12) comprises an auxiliary frame (121) and sample cavities (122) provided on both sides of the inner end surface of the auxiliary frame (121); the upper and lower sets of the auxiliary frames (121) are connected via a connecting column (123); the auxiliary frames (121) are inserted into the inner cavity of the insertion slot (112), so that the support mechanism (11) and the auxiliary mechanism (12) form a whole.

5. A concrete slump detection device according to claim 4, characterized in that: The connecting column (123) vertically penetrates the inner cavity of the insertion positioning hole (23), so that the auxiliary mechanism (12) and the detection unit (2) become a whole.

6. A concrete slump detection device according to claim 5, characterized in that: The adjustment mechanism (13) comprises a downward pressing vertical rod (131) and a bearing block (132) arranged at the top position of the downward pressing vertical rod (131), and the bottom of the downward pressing vertical rod (131) is connected to the connecting piece (134) via a reinforcing block (133).

7. A concrete slump detection device according to claim 6, characterized in that: The adjustment mechanism (13) further comprises a fitting vertical rod (135) arranged on the other side of the upper end surface of the connecting piece (134); a limiting ear block (136) is arranged on the top of the fitting vertical rod (135); elastic members (137) are arranged on both sides of the inner end surface of the limiting ear block (136); and the limiting ear block (136) and the downward pressing vertical rod (131) are connected in series via a connecting belt (138).

8. A concrete slump detection device according to claim 7, characterized in that: The downward pressing vertical rod (131) is vertically inserted into the inner cavity of the matching frame (115), the upper end surface of the connecting piece (134) is recessed at a position against the lower end surface of the frame body (111), and the fitting vertical rod (135) is integrally inserted into the inner cavity of the edge opening (114).

9. A concrete slump detection device according to claim 8, characterized in that: The weighing unit (3) comprises a weighing plate (31) and limit baffles (32) arranged transversely on both sides of the upper end surface edge of the weighing plate (31); a lower pressure cylinder (33) is vertically arranged at the middle position of the bottom of the weighing plate (31); and the lower pressure cylinder (33) is inserted into the top of the upper protrusion (22) from top to bottom.

10. A concrete slump detection device according to claim 9, characterized in that: The molding unit (4) comprises a molding assembly box (41) and a molding cylindrical half-tube (42) opened at the interval between two groups of molding assembly boxes (41), and the two groups of molding assembly boxes (41) are vertically inserted into the inner cavity of the cavity (113).

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