Concrete slump measuring device

Abstract

The invention discloses a concrete slump measuring device which comprises a bottom plate, a slump cylinder, a measuring mechanism, a positioning and locking mechanism and an inserting and tamping mechanism, wherein the measuring mechanism is used for measuring the expansion degree and the slump degree of a material; the positioning and locking mechanism is used for positioning the slump cylinder at an expansion degree marking circle center and attaching and locking the slump cylinder on the bottom plate; the inserting and tamping mechanism is used for realizing inserting and tamping in the slump cylinder and lifting the slump cylinder; the measuring mechanism comprises an expansion degree mark, a slump scale rod and a long ruler; the positioning and locking mechanism comprises a positioning hole and a bolt assembly; the inserting and tamping mechanism comprises an electric telescopic piece, a motor, a connector, a tamping rod and a protrusion. The device avoids errors caused by manual insertion and cylinder lifting, is accurate in measurement and simple to operate, and can be operated by a single person.

Description

Technical Field

[0001] The present invention relates to the performance test of cement concrete mixture, and particularly to a device for measuring the slump of concrete. Background Art

[0002] The test method for measuring the consistency of cement concrete mixture by using a slump cone is as follows: The concrete sample is filled into the slump cone in three layers and tamped with a tamping rod. After scraping off the excess concrete at the mouth of the cone, the slump cone is vertically lifted, and the slump and spread of the conical concrete sample are measured to evaluate the consistency of the cement concrete mixture.

[0003] Currently, the measurement of concrete slump is carried out manually, that is: manually stepping on the footrest tightly, manually tamping, manually vertically lifting the slump cone, manually cleaning the cement concrete mixture scattered around the bottom of the cone, manually cleaning the cement concrete mixture after the test is completed, and manually measuring the slump and spread of the cement concrete mixture with a ruler.

[0004] The manual measurement of concrete slump is labor-consuming and time-consuming, and is very inconvenient. The key is that due to completely manual operation, it may lead to large errors in the measurement results. For example, when filling the cement concrete mixture, the slump cone is not tamped firmly and the concrete at the bottom of the slump cone leaks out, the tamping rod is not used vertically for tamping, the slump cone is not lifted vertically accurately, the mixture around the bottom of the cone that is not cleaned up is mixed with the conical concrete sample, etc., all of which will lead to inaccurate measurement results of the slump and spread. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for measuring the slump of concrete, which avoids the errors caused by manual tamping and lifting the cone, has accurate measurement, simple operation, and can be operated by a single person.

[0006] The technical solution adopted by the present invention is: A concrete slump measuring device includes a bottom plate, a slump cone, a measuring mechanism, a positioning and locking mechanism, and a ramming mechanism; the measuring mechanism is used to measure the spread and slump of the material, and it includes a spread mark provided on the bottom plate, a slump scale rod capable of displaying the distance from the bottom plate, and a long ruler slidably and rotatably provided on the slump scale rod. The spread mark is a number of concentric rings with values; the positioning and locking mechanism is used to position the slump cone at the center of the spread mark and fit and lock it on the bottom plate. It includes a positioning hole provided on the bottom plate and a pin assembly provided at the lower outer side of the slump cone. The side wall of the positioning hole is provided with a locking hole, internally slidably fitted with a plug block and an elastic member applying an upward restoring force to the plug block. The pin assembly includes a pin and an operating member for operating the pin. Initially, the plug block is flush with the bottom plate and blocks the positioning hole. After the pin assembly presses down the plug block into the positioning hole, the operating member operates the pin to be able to enter and exit the locking hole to achieve locking and unlocking of the slump cone; the ramming mechanism is used to achieve ramming inside the slump cone and lifting of the slump cone. It includes an electric telescopic member vertically pointing downward to the center of the spread mark, a motor provided at the lower end of the electric telescopic member and capable of being driven to lift, a connector provided at the lower end of the motor and capable of being driven to rotate, a detachable rammer, and protrusions distributed at the upper outer side of the slump cone. The lower side of the connector is provided with rammer mounting ports, and the outer edge is provided with hook claws capable of being screwed into the protrusions. Under the cooperation of the electric telescopic member and the motor, the rammer can be inserted into the slump cone to complete the ramming action under the ramming condition, and the hook claws can be screwed into the protrusions and vertically lift the slump cone under the condition of lifting the cone.

[0007] Preferably, the electric telescopic member has four gears and three working modes. Among them, when the four gears are not turned on, the connector is in the initial position. When installing the rammer in the initial position of the connector, the lower end of the rammer is higher than the upper opening of the positioned slump cone. When the first to third gears are turned on simultaneously, the rammer on the connector can be inserted into the positioned slump cone and contact the bottom plate. When the second and third gears are turned on simultaneously, the lower end of the rammer on the connector is located below one-third of the height inside the positioned slump cone. When only the third gear is turned on, the lower end of the rammer on the connector is located below two-thirds of the height inside the positioned slump cone. When the first to fourth gears are turned on simultaneously, the hook claws on the connector are at a height capable of cooperating with the protrusions on the positioned slump cone. In the first mode, the opening and closing of the first to third gears can be freely controlled. In the second mode, it is to reciprocally expand and contract at a certain height range and number of times at a constant speed. In the third mode, it is to turn on the first to fourth gears simultaneously; the motor has two working modes. Among them, in the first mode, it drives the connector to rotate a certain angle for the hook claws after reaching the height to be screwed into the protrusions. In the second mode, it drives the connector to rotate a certain angle and number of times at a constant speed; the working time of the second mode of the electric telescopic member and the second mode of the motor is the same.

[0008] Preferably, initially: use the positioning and locking mechanism to position the slump cone at the center of the spread mark and fit and lock it on the bottom plate. The connector is in the initial position, and the rammer is installed on the rammer mounting port. Under the ramming condition: First, turn on the first mode of the electric telescopic part, then turn on the first to third gears. The rammer is inserted into the slump cone and touches the bottom plate. Then, add the concrete specimen until it reaches one-third of the height of the slump cone. Then, turn on the second mode of the electric telescopic part and the second mode of the motor simultaneously. After the ramming action is completed, turn on the first mode of the electric telescopic part again, then turn off the first gear. The lower end of the rammer is below one-third of the height inside the slump cone. Then, add the concrete specimen until it reaches two-thirds of the height of the slump cone. Then, turn on the second mode of the electric telescopic part and the second mode of the motor simultaneously. After the ramming action is completed, turn on the first mode of the electric telescopic part again, then turn off the second gear. The lower end of the rammer is below two-thirds of the height inside the slump cone. Then, add the concrete specimen until the slump cone is filled. Then, turn on the second mode of the electric telescopic part and the second mode of the motor simultaneously. After the ramming action is completed, turn on the first mode of the electric telescopic part again, then turn off the third gear, and the connector returns to the initial position; Under the slump cone lifting condition: First, remove the rammer, then turn on the third mode of the electric telescopic part. The first to fourth gears are turned on simultaneously. The hook claw is at a height where it can cooperate with the protrusion. Then, turn on the first mode of the motor. The connector rotates by a certain angle to make the hook claw screw into the protrusion. Then, operate the operating part to unlock the slump cone. Then, turn off the third mode of the electric telescopic part. The connector vertically lifts the slump cone and returns to the initial position.

[0009] Preferably, the pin assembly includes an extension piece, a pin housing, a pin, and an operating part; the extension piece is provided at the lower end outside the slump cone. The extension piece has a horizontal part and a stepped part. When the slump cone is positioned, the horizontal part is attached to the bottom plate and the stepped part extends into the positioning hole; the pin housing is fixedly provided on the stepped part. The pin housing is in a U shape with an opening facing downwards. There is a sunk groove on the inner side of the top surface of the pin housing and a through circular hole on the outer side; the pin is placed on the stepped part and is slidably fitted in the U-shaped groove of the pin housing. There is a linear groove on the top surface of the pin; the operating part includes a disc, a handle provided on the top surface of the disc, and a transmission column eccentrically provided on the bottom surface of the disc. The disc is fitted in the sunk groove and abuts between the inner end surface of the sunk groove and the top surface of the pin. The handle extends out of the circular hole and can rotate in the circular hole. The transmission column is fitted and inserted into the linear groove; when the handle is rotated, the pin can be driven to extend and retract along the pin housing through the transmission column and the linear groove. When the slump cone is positioned and the pin extends, it enters the locking hole, and when the pin retracts, it exits the locking hole.

[0010] Preferably, a ring groove is provided on the outer circle of the disc, and a flange is provided on the inner side surface of the sunk groove to be assembled together with the ring groove by pressing using the material deformation of the operating part and the pin housing.

[0011] Preferably, the positioning hole and the plug are rectangular. When the slump cone is positioned, the internal angle between the horizontal part and the stepped part cooperates with the external angle on one side of the upper opening of the positioning hole.

[0012] Preferably, a material receiving plate for receiving the splashed material is provided outside the slump cone.

[0013] Preferably, a protruding portion is formed by protruding from one side of the upper opening of the positioning hole into the positioning hole, a yielding groove matching the protruding portion is provided on the corresponding side of the plug block, and matching chamfers are provided at the lower ends of the protruding portion and the yielding groove, and the chamfers are transitioned by arcs.

[0014] Preferably, a cleaning mechanism is further included. The cleaning mechanism is used to clean the materials on the bottom plate and includes a scraping plate that fits the bottom plate and can move, and a collection groove located on the side of the bottom plate away from the scraping plate for collecting the scraped materials. The slump scale rod is arranged inside the scraping plate, and the long ruler can be placed on the top edge of the scraping plate.

[0015] Preferably, the scraping plate is U-shaped, flanges are provided on both side edges of the scraping plate, and the scraping plate is driven by the electric pushers on both sides to synchronously drive the movement of the flanges on the corresponding sides.

[0016] The beneficial effects of the present invention are as follows: The positioning and locking mechanism of the device can position the slump cone at the center of the spread mark and fit and lock it on the bottom plate, which is convenient for subsequent ramming conditions, lifting the cylinder conditions, and cooperating with the measurement of the spread mark, ensuring the accuracy premise of the test. Among them, the automatically resetting plug block can not only prevent the materials from falling into the positioning hole after the slump cone is lifted, but also push the slump cone out of the positioning hole in time when the operation is unlocked; the ramming mechanism of the device can realize ramming and lifting the cylinder. Among them, the ramming action is realized by the cooperation of the electric telescopic member, the motor, the connector, and the rammer, and the vertical lifting cylinder action is realized by the cooperation of the electric telescopic member, the motor, the connector, the hook claw, and the protrusion, avoiding the errors caused by manual ramming and lifting the cylinder; the measuring mechanism of the device can measure the spread and slump of the materials after ramming and lifting the cylinder. Among them, the spread can be obtained by reading the concentric ring value at the edge of the materials, and the slump can be obtained by pressing the long ruler against the highest point of the materials and reading the corresponding value on the slump scale rod, with accurate measurement; the device is simple to operate and can complete the positioning, locking, ramming, and lifting of the slump cone by a single person, saving manpower. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the concrete slump measuring device in the present invention, and the slump cone is in a locked state.

[0019] Figure 2 It is Figure 1 the top view of

[0020] Figure 3 It isFigure 2 Enlarged view at position C in [the figure]. Figure 4 It is Figure 2 Sectional view of the D-D plane at position B in [the figure], with the bolt locked in the figure.

[0021] Figure 5 It is Figure 2 Sectional view of the D-D plane at position B in [the figure], with the bolt unlocked in the figure.

[0022] Figure 6 Schematic diagram of the bolt housing, bolt and operating member in the present invention.

[0023] Figure 7 Schematic diagram of the concrete slump measuring device in the present invention, with the slump cone in the lifted state.

[0024] Figure 8 It is Figure 7 Enlarged view at position A in [the figure].

[0025] Figure 9 Schematic diagram of the cleaning assembly, slump scale rod and long ruler in the present invention.

[0026] In the figure: 1 - Bottom plate; 2 - Slump cone; 21 - Material receiving plate; 3 - Measuring mechanism; 31 - Spread mark; 32 - Slump scale rod; 33 - Long ruler; 34 - Slide cylinder; 4 - Positioning and locking mechanism; 41 - Positioning hole; 411 - Protrusion; 412 - Chamfer; 413 - Locking hole; 42 - Plug; 421 - Yielding groove; 422 - Chamfer; 43 - Elastic member; 44 - Bolt; 441 - Linear groove; 45 - Operating member; 451 - Handle; 452 - Disc; 4521 - Ring groove; 453 - Transmission column; 46 - Extension piece; 47 - Bolt housing; 471 - Flange; 472 - Round hole; 5 - Ramming mechanism; 51 - Electric telescopic member; 52 - Motor; 53 - Connector; 531 - Hook; 54 - Rammer; 55 - Protrusion; 56 - Folding rod; 6 - Cleaning mechanism; 61 - Scraper; 611 - Flange; 62 - Collection tank; 63 - Electric pusher. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0028] Accordingly, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0029] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is habitually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] The features and performance of the present application will be further described in detail below in conjunction with embodiments.

[0033] Embodiment 1 This embodiment discloses a concrete slump measuring device, as Figure 1 , Figure 2 and Figure 7 shown, including a bottom plate 1, a slump cone 2, a measuring mechanism 3, a positioning and locking mechanism 4, a ramming mechanism 5 and a cleaning mechanism 6; Wherein: The measuring mechanism 3 is used to measure the spread and slump of the material. It includes a spread mark 31, a slump scale rod 32 and a long ruler 33. The spread mark 31 is provided on the bottom plate 1. The spread mark 31 is a plurality of concentric rings with numerical values. The slump scale rod 32 can display the distance from the bottom plate 1. The long ruler 33 is slidably and rotatably provided on the slump scale rod 32, see Figure 1 , Figure 2 andFigure 9 ; The positioning and locking mechanism 4 is used to position the slump cone 2 at the center of the extension mark 31 and fit and lock it on the bottom plate 1. It includes a positioning hole 41, a plug 42, an elastic member 43 and a bolt assembly. The positioning hole 41 is provided on the bottom plate 1, and a locking hole 413 is provided on the side wall of the positioning hole 41. The plug 42 is slidably fitted in the positioning hole 41. The elastic member 43 is provided in the positioning hole 41 and applies an upward restoring force to the plug 42. The bolt assembly is provided at the lower end of the outer side of the slump cone 2. The bolt assembly includes a bolt 44 and an operating member 45 for operating the bolt 44. Initially, the plug 42 is flush with the bottom plate 1 and blocks the positioning hole 41. After the bolt assembly presses down the plug 42 into the positioning hole 41, the operating member 45 operates the bolt 44 to be able to enter and exit the locking hole 413 to realize the locking and unlocking of the slump cone 2, see Figure 1 , Figure 2 , Figure 4 and Figure 5 ; The ramming mechanism 5 is used to realize ramming inside the slump cone 2 and lifting of the slump cone. It includes an electric telescopic member 51, a motor 52, a connector 53, a rammer 54 and a protrusion 55. The electric telescopic member 51 points vertically downward towards the center of the extension mark 31. The motor 52 is provided at the lower end of the electric telescopic member 51 and can be driven to lift and lower. The connector 53 is provided at the lower end of the motor 52 and can be driven to rotate. Rammer mounting ports are distributed on the lower side of the connector 53. The rammer 54 is detachably mounted on the rammer mounting ports. The protrusions 55 are distributed at the upper end of the outer side of the slump cone 2. Hook claws 531 capable of being screwed into the protrusions 55 are provided on the outer edge of the connector 53. Under the cooperation of the electric telescopic member 51 and the motor 52, the rammer 54 can insert into the slump cone 2 to complete the ramming action under the ramming condition, and the hook claws 531 can be screwed into the protrusions 55 and vertically lift the slump cone 2 under the condition of lifting the cone, see Figure 1 , Figure 2 , Figure 7 and Figure 8 ; The cleaning mechanism 6 is used to clean the materials on the bottom plate 1. It includes a scraper 61 and a collection trough 62. The scraper 61 fits the bottom plate 1 and can move along the bottom plate 1. The collection trough 62 is located on the side of the bottom plate 1 away from the scraper 61 and is used to collect the scraped materials. The slump scale rod 32 is provided inside the scraper 61, and the long ruler 33 can be placed on the top edge of the scraper 61, see Figure 1 , Figure 2 , Figure 7 and Figure 9 .

[0034] According to the above scheme, it can be known that: The positioning and locking mechanism 4 of the device can position the slump cone 2 at the center of the spreading degree mark 31 and fit and lock it on the bottom plate 1, facilitating subsequent ramming operations, cone-lifting operations, and measurements in conjunction with the spreading degree mark, ensuring the accuracy prerequisite for the test. Among them, the automatically resetting plug 42 can not only prevent the material from falling into the positioning hole 41 after the slump cone 2 is lifted, but also push the slump cone 2 out of the positioning hole 41 in a timely manner during the cone-lifting operation; The ramming mechanism 5 of the device can achieve ramming and cone-lifting. Among them, the ramming action is achieved by the cooperation of the electric telescopic member 51, the motor 52, the connector 53, and the rammer 54, and the vertical cone-lifting action is achieved by the cooperation of the electric telescopic member 51, the motor 52, the connector 53, the hook claw 531, and the protrusion 55, avoiding the errors caused by manual ramming and cone-lifting; The measuring mechanism 3 of the device can measure the spreading degree and slump of the material after ramming and cone-lifting. Among them, the spreading degree can be obtained by reading the concentric ring value at the edge of the material, and the slump can be obtained by placing the long ruler 33 against the highest point of the material and reading the corresponding value on the slump scale rod 32, with accurate measurement; The cleaning mechanism 6 of the device can quickly and thoroughly clean the measured material on the bottom plate 1 after measurement using the scraper 61; and, in order to avoid interference between the slump scale rod 32 and the scraper 61, the slump scale rod 32 is arranged inside the scraper 61; and, when the long ruler 33 is not in use, the long ruler 33 can slide above the scraper 61 and rotate above the scraper 61 to be placed on the top edge of the scraper 61. Since there is a sliding pair between the long ruler 33 and the slump scale rod 32, it will not fall as long as support is provided below the long ruler 33. Therefore, the long ruler 33 can be stably placed on the top edge of the scraper 61 without falling and can move with the scraper 61.

[0035] The device is easy to operate and can be operated by a single person to complete the positioning and locking, ramming, and cone-lifting of the slump cone 2, saving manpower.

[0036] Regarding the control of the electric telescopic member 51 and the motor 52, in this embodiment, preferably: The electric telescopic member 51 has four gears and three working modes. Among them, when the four gears are not turned on, the connector 53 is in the initial position. When the rammer 54 is installed in the initial position of the connector 53, the lower end of the rammer 54 is higher than the upper opening of the slump cone 2 after positioning. When the first to third gears are turned on simultaneously, the rammer 54 on the connector 53 can be inserted into the slump cone 2 after positioning and contact the bottom plate 1. When the second and third gears are turned on simultaneously, the lower end of the rammer on the connector is below one-third of the height of the slump cone after positioning. When only the third gear is turned on, the lower end of the rammer 54 on the connector 53 is below two-thirds of the height of the slump cone 2 after positioning. When the first to fourth gears are turned on simultaneously, the hook claw 531 on the connector 53 is at a height where it can cooperate with the protrusion 55 on the slump cone 2 after positioning. In the first mode, the opening and closing of the first to third gears can be freely controlled. In the second mode, it reciprocates uniformly in a certain height range and number of times. In the third mode, the first to fourth gears are turned on simultaneously; The motor 52 has two working modes. Among them, in the first mode, it drives the connector 53 to rotate a certain angle for the hook claw 531 after reaching the height to be screwed into the protrusion 55. In the second mode, it drives the connector 53 to rotate uniformly and reciprocally by a certain angle and number of times; The working time of the second mode of the electric telescopic member 51 and the second mode of the motor 52 is the same.

[0037] In this embodiment, the electric telescopic member 51 is controlled by several gears and modes, and the motor 52 is controlled by several modes, which can better standardize the movement amplitude of the two, avoid mechanical interference caused by excessive stroke and incomplete movement caused by insufficient stroke. Compared with the full manual control of the electric telescopic member 51 and the motor 52, it is more efficient, safer, simple to operate and easy to get started.

[0038] Specifically, in this embodiment, the height of the slump cone 2 is 300 mm; the full length of the rammer 54 is 320 mm, and its upper end is a 10-mm-long threaded section. The rammer installation port is a threaded hole with a depth of 10 mm. After the rammer 54 is installed in place on the rammer installation port, the exposed length of the rammer 54 is 310 mm. Three rammer installation ports are evenly distributed around the center of the extension mark 31 on the lower side of the connector 53; Three protrusions 55 are evenly distributed around the center of the extension mark 31 on the upper outer side of the slump cone 2. Three hook claws 531 are evenly distributed around the center of the extension mark 31 on the outer edge of the connector 53; Initially, the lower end of the rammer 54 on the connector 53 is 15 mm higher than the upper opening of the slump cone 2, which is sufficient to install and remove the rammer 54 and add the concrete sample. The protrusion 55 and the hook claw 531 are staggered by sixty degrees; The extension amount of the first gear of the electric telescopic member 51 is 75 mm, the extension amount of the second gear is 100 mm, the extension amount of the third gear is 140 mm, and the extension amount of the fourth gear is 10 mm. The electric telescopic member 51 reciprocates uniformly by 100 mm for twenty-five times in the second mode; The motor 52 rotates sixty degrees in the first mode, and the motor 52 rotates uniformly and reciprocally by one hundred and twenty degrees for twenty-five times in the second mode.

[0039] According to the above control methods of the electric telescopic member 51 and the motor 52, the following operation method is adopted: At the initial stage: Use the positioning and locking mechanism 4 to position the slump cone 2 at the center of the spread mark 31 and fit and lock it on the bottom plate 1. The connector 53 is in the initial position. Install the rammer 54 on the rammer installation port, as shown in Figure 1 ; Under the ramming condition: First, turn on the first mode of the electric telescopic member 51, then turn on the first to third gears. The rammer 54 is inserted into the slump cone 2 and contacts the bottom plate 1. Then add the concrete sample to one-third of the height of the slump cone 2. Then, simultaneously turn on the second mode of the electric telescopic member 51 and the second mode of the motor 52. After the ramming action is completed, turn on the first mode of the electric telescopic member 51 again, and then turn off the first gear. The lower end of the rammer 54 is below one-third of the height inside the slump cone 2. Then add the concrete sample to two-thirds of the height of the slump cone 2. Then, simultaneously turn on the second mode of the electric telescopic member 51 and the second mode of the motor 52. After the ramming action is completed, turn on the first mode of the electric telescopic member 51 again, and then turn off the second gear. The lower end of the rammer 54 is below two-thirds of the height inside the slump cone 2. Then add the concrete sample to fill the slump cone 2. Then, simultaneously turn on the second mode of the electric telescopic member 51 and the second mode of the motor 52. After the ramming action is completed, turn on the first mode of the electric telescopic member 51 again, and then turn off the third gear. The connector 53 returns to the initial position; Under the condition of lifting the cone: First, remove the rammer 54, and use sawing and rolling actions to remove the excess concrete on the rammer 54. Use a trowel to level the upper opening of the slump cone 2. Then turn on the third mode of the electric telescopic member 51, and turn on the first to fourth gears simultaneously. The hook claw 531 is at a height where it can cooperate with the protrusion 55. Then turn on the first mode of the motor 52. The connector 53 rotates a certain angle to screw the hook claw 531 into the protrusion 55. Then operate the operating member 45 to unlock the slump cone 2. Then turn off the third mode of the electric telescopic member 51. The connector 53 vertically lifts the slump cone 2 and returns to the initial position, as shown in Figure 7 ; After the cone is lifted: Manually rotate the slump cone 2 to remove it. Read the concentric ring value at the edge of the material to obtain the spread. Place the long ruler 33 against the highest point of the material and read the corresponding value on the slump scale bar 32 to obtain the slump. Then place the long ruler 33 on the edge of the scraper 61, drive the scraper 61 to move along the bottom plate 1, and the collection tank 62 collects the scraped material. The scraper 61 can be pushed multiple times to repeat the operation to scrape it clean. Finally, water is used to clean the entire device.

[0040] Regarding the positioning and locking mechanism 4, in this embodiment, preferably: As Figures 4 to 6As shown, the bolt assembly includes an extension piece 46, a bolt housing 47, a bolt 44, and an operating member 45. The extension piece 46 is provided at the lower end outside the slump cone 2. The extension piece 46 has a horizontal portion and a stepped portion. When the slump cone 2 is positioned, the horizontal portion is attached to the bottom plate 1 and the stepped portion extends into the positioning hole 41. The bolt housing 47 is fixedly provided on the stepped portion. The bolt housing 47 is U-shaped with an opening facing downwards. An inner side of the top surface of the bolt housing 47 is provided with a sunk groove, and an outer side is provided with a through circular hole 472. The bolt 44 is placed on the stepped portion and is slidably fitted in the U-shaped groove of the bolt housing 47. A linear groove 441 is provided on the top surface of the bolt 44. The operating member 45 includes a disc 452, a handle 451 provided on the top surface of the disc 452, and a transmission post 453 eccentrically provided on the bottom surface of the disc 452. The disc 452 is fitted in the sunk groove and abuts between the inner end surface of the sunk groove and the top surface of the bolt 44. The handle 451 extends out of the circular hole 472 and can rotate in the circular hole 472. The transmission post 453 is fitted and inserted into the linear groove 441. When the handle 451 is rotated, the bolt 44 can be driven to extend and retract along the bolt housing 47 through the transmission post 453 and the linear groove 441. When the bolt 44 extends after the slump cone 2 is positioned, it enters the locking hole 413, and when the bolt 44 retracts, it exits the locking hole 413. The axial direction of the operating member 45 is limited by the bolt housing 47 and the bolt 44, and the radial direction is limited by the sunk groove. It can only rotate. The up and down direction of the bolt 44 is limited by the operating member 45 and the extension piece 46, and the horizontal direction is restricted by the U-shaped groove of the bolt housing 47. It can only slide horizontally. Since the transmission post 453 is eccentrically provided, when the handle 451 drives the operating member 45 to rotate, under the cooperation of the transmission post 453 and the linear groove 441, the bolt 44 will be driven to extend and retract along the bolt housing 47. Therefore, only by operating the handle 451 can the locking and unlocking after the slump cone 2 is positioned be realized. And, as Figure 6 shown, a ring groove 4521 is provided on the outer circle of the disc 452, and a flange 471 matching the ring groove 4521 is provided on the inner side surface of the sunk groove. The ring groove 4521 and the flange 471 are assembled together by pressing using the material deformation of the operating member 46 and the bolt housing 47. The ring groove 4521 and the flange 471 can not only axially limit and radially limit the operating member 45, but also provide frictional force to achieve the effect of frictional locking on the rotation position of the handle 451.

[0041] As Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 shown, the positioning hole 41 and the plug 42 are rectangular. When the slump cone 2 is positioned, the internal angle between the horizontal portion and the stepped portion is fitted at the external angle on one side of the upper opening of the positioning hole 41. The rectangular positioning hole 41 and the plug 42 are easy to process. The key is that they are easy to cooperate with the extension piece 46. When the internal angle between the horizontal portion and the stepped portion is fitted at the external angle on one side of the upper opening of the positioning hole 41, it indicates that the slump cone 2 has been positioned. The elastic member 43 can adopt a rectangular spring.

[0042] AsFigure 4 and Figure 5 As shown in Figure 5 , a protrusion 411 is formed by protruding from one side of the upper opening of the positioning hole 41 into the positioning hole 41. A yielding groove 421 matching the protrusion 411 is provided on the corresponding side of the plug 42. Chamfers (412, 422) matching each other are provided at the lower ends of the protrusion 411 and the yielding groove 421, and the chamfers (412, 422) adopt arc transitions. The protrusion 411 and the yielding groove 421 can limit the upward stroke of the plug 42 and prevent the plug 42 from coming out. The chamfers (412, 422) with arc transitions can reduce the limiting impact and play a buffering role.

[0043] As Figure 1 、 Figure 2 、 Figure 7 As shown in Figure 1 , Figure 2 , Figure 7 , two groups of positioning holes 41 and pin assemblies are provided. The two groups of positioning holes 41 are symmetric about the center of the spread mark 31, and the two groups of pin assemblies are symmetric about the slump cone 2. Therefore, no matter in which direction, the slump cone 2 can be quickly positioned.

[0044] Regarding the slump cone 2, in this embodiment, preferably: As Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 As shown in Figure 1 , Figure 2 , Figure 7 , Figure 8 , a material receiving plate 21 for receiving the splashed material is provided on the outer side of the slump cone 2. When filling concrete into the slump cone 2, ramming the concrete in the slump cone 2, and leveling the concrete at the upper opening of the slump cone 2, it is possible for the material to splash out. The material receiving plate 21 receives the splashed material and prevents it from falling on the bottom plate 1, avoiding inaccurate subsequent measurement results.

[0045] Regarding the cleaning mechanism 6, in this embodiment, preferably: As Figure 1 、 Figure 2 、 Figures 7 to 9 As shown in Figure 1 , Figure 2 , Figures 7 to 9 , the scraper 61 is U-shaped, and flanges 611 are provided on both side edges of the scraper 61. The scraper 61 is driven by the electric pushers 63 on both sides to move the flanges 611 on their respective sides synchronously. The U-shaped scraper 61 can gather the material in the groove and prevent the material from flowing away from the side. The electric pusher 63 can adopt a multi-section structure to increase the telescopic stroke.

[0046] Regarding the bottom plate 1, in this embodiment: The bottom plate 1 can be a solid plate or a hollow plate with a thicker top surface than other surfaces.

[0047] Regarding the measuring mechanism 3, in this embodiment: In the spread mark 31, starting from the concentric ring with a diameter of 200 mm, a concentric ring is set every time the diameter increases by 100 mm until reaching the concentric ring with a diameter of 800 mm; the measuring range of the slump scale rod 32 is from 3 mm to 300 mm, the minimum unit is 1 mm, and the long ruler 33 only serves to approach the material and has no scale marks on it. The diameter of the slump scale rod 32 is 3.5 mm and the length is 327 mm. The end of the long ruler 33 is sleeved on the slump scale rod 32 through a sliding cylinder 34. The inner diameter of the sliding cylinder 34 is 3.5 mm, the outer diameter is 4 mm, and the length is 30 mm.

[0048] Regarding the ramming mechanism 5, in this embodiment: The electric telescopic member 51 is installed on the bottom plate 1 through a folding rod 56. The folding rod 56 is fixed at a corner of the bottom plate 1, first extends upward, then extends horizontally towards the center of the spread mark 31, and then extends downward.

[0049] Embodiment 2 This embodiment discloses another concrete slump measuring device. The difference between this embodiment and Embodiment 1 is that the cleaning mechanism 6 is cancelled, and the slump scale rod 32 is fixed on the bottom plate 1. When it is necessary to remove the material on the bottom plate 1, the material on the bottom plate 1 is scraped off manually with a scraper.

[0050] The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

Claims

1. A concrete slump measuring device, characterized in that: Includes base plate, slump cone, and: The measuring mechanism is used to measure the expansion and slump of the material, and comprises an expansion mark arranged on the bottom plate, a slump scale rod capable of displaying the distance from the bottom plate, and a long ruler slidably and rotatably arranged on the slump scale rod, wherein the expansion mark is a plurality of concentric rings with numerical values; The positioning and locking mechanism is used to position the collapse cone at the center of the expansion mark circle and lock it on the bottom plate. It includes a positioning hole provided on the bottom plate and a latch assembly provided on the lower end of the outer side of the collapse cone. The side wall of the positioning hole is provided with a locking hole, and a blocking block and an elastic member that applies an upward reset force to the blocking block are slidably matched inside. The latch assembly includes a latch and an operating member for operating the latch. Initially, the blocking block is flush with the bottom plate and blocks the positioning hole. After the latch assembly presses the blocking block downward to enter the positioning hole, the operating member operates the latch to enter and exit the locking hole to achieve locking and unlocking of the collapse cone. The tamping mechanism is used to realize the tamping in the collapse cylinder and the lifting of the collapse cylinder, which includes an electric telescopic part pointing vertically downward to the center of the expansion mark, a motor arranged at the lower end of the electric telescopic part and capable of being driven to rise and fall, a connector arranged at the lower end of the motor and capable of being driven to rotate, a detachable tamping rod, and protrusions distributed on the upper end of the outer side of the collapse cylinder. A tamping rod installation port is distributed on the lower side of the connector, and a hook claw that can be screwed into the protrusion is provided on the outer edge. With the cooperation of the electric telescopic part and the motor, the tamping rod can be inserted into the collapse cylinder to complete the tamping action under the tamping condition, and the hook claw can be screwed into the protrusion and vertically lift the collapse cylinder under the lifting condition.

2. The concrete slump measuring device according to claim 1, characterized in that: The electric telescopic member has four gears and three working modes, wherein the connector is in the initial position when the four gears are not opened, and the lower end of the tamping rod is higher than the upper opening of the positioned collapse cone when the tamping rod is installed in the initial position of the connector, and the tamping rod on the connector can be inserted into the positioned collapse cone and contact the bottom plate when the first to third gears are opened at the same time, and the lower end of the tamping rod on the connector is located below one-third of the height in the positioned collapse cone when the second and third gears are opened at the same time, and the lower end of the tamping rod on the connector is located below two-thirds of the height in the positioned collapse cone when only the third gear is opened, and the hook claw on the connector is at a height that can cooperate with the protrusion on the positioned collapse cone when the first to fourth gears are opened at the same time. In the first mode, the opening and closing of the first to third gears can be freely controlled, and in the second mode, the connector is reciprocated at a constant speed within a certain height range and number of times, and in the third mode, the first to fourth gears are opened at the same time; the motor has two working modes, wherein in the first mode, the connector is driven to rotate a certain angle so that the hook claw after the height is in place is screwed into the protrusion, and in the second mode, the connector is driven to reciprocate at a constant speed for a certain angle and number of times; the working time of the second mode of the electric telescopic member and the second mode of the motor are the same.

3. The concrete slump measuring device according to claim 2, characterized in that: Initially: Use the positioning and locking mechanism to position the slump cone at the center of the expansion mark circle and lock it on the bottom plate. The connector is in the initial position and the tamping rod is installed on the tamping rod installation port. Under the tamping condition: first turn on the first mode of the electric telescopic component, then turn on the first to third gears, insert the tamping rod into the slump cylinder and contact the bottom plate, then add the concrete sample to one-third of the slump cylinder height, then turn on the second mode of the electric telescopic component and the second mode of the motor at the same time, after the tamping action is completed, turn on the first mode of the electric telescopic component, then turn off the first gear, the lower end of the tamping rod is below one-third of the height in the slump cylinder, then add the concrete sample to two-thirds of the height of the slump cylinder, then turn on the second mode of the electric telescopic component and the second mode of the motor at the same time, after the tamping action is completed, turn on the first mode of the electric telescopic component, then turn off the second gear, the lower end of the tamping rod is below two-thirds of the height in the slump cylinder, then add the concrete sample to fill the slump cylinder, then turn on the second mode of the electric telescopic component and the second mode of the motor at the same time, after the tamping action is completed, turn on the first mode of the electric telescopic component, then turn off the third gear, and the connector returns to the initial position; Under the condition of lifting the cylinder: first remove the tamping rod, then turn on the third mode of the electric telescopic part, turn on the first to fourth gears at the same time, the hook claw is at a height that can cooperate with the protrusion, then turn on the first mode of the motor, rotate the connector to a certain angle to make the hook claw screw into the protrusion, then operate the operating part to unlock the collapse cylinder, and then close the third mode of the electric telescopic part, the connector vertically lifts the collapse cylinder and returns to the initial position.

4. The concrete slump measuring device according to claim 1, characterized in that: The latch assembly comprises an extension piece, a latch shell, a latch, and an operating member; the extension piece is arranged at the lower end of the outer side of the collapse cylinder, and the extension piece has a horizontal portion and a stepped portion. When the collapse cylinder is positioned, the horizontal portion is attached to the bottom plate and the stepped portion extends into the positioning hole; the latch shell is fixedly arranged on the stepped portion, and the latch shell is in a U-shape with an opening facing downward, and a recessed groove is provided on the inner side of the top surface of the latch shell, and a through circular hole is provided on the outer side; the latch is placed on the stepped portion and slidably fits in the U-shaped groove of the latch shell, and a linear groove is provided on the top surface of the latch; the operating member comprises a disc, a handle arranged on the top surface of the disc, and a transmission column eccentrically arranged on the bottom surface of the disc, the disc fits in the recessed groove and rests between the inner end surface of the recessed groove and the top surface of the latch, the handle extends out of the circular hole and can rotate in the circular hole, and the transmission column cooperates to insert into the linear groove; when the handle is rotated, the latch can be driven to extend and retract along the latch shell through the transmission column and the linear groove, and after the collapse cylinder is positioned, the latch enters the locking hole when it extends out and exits the locking hole when it retracts.

5. The concrete slump measuring device according to claim 4, characterized in that: An annular groove is arranged on the outer circle of the disc, and a flange matched with the annular groove is arranged on the inner side of the recessed groove. The annular groove and the flange are assembled together by pressing by utilizing the material deformation of the operating member and the latch shell.

6. The concrete slump measuring device according to claim 4, characterized in that: The positioning hole and the blocking block are rectangular, and when the collapse cone is positioned, the inner corner between the horizontal portion and the stepped portion is matched with the outer corner on the upper side of the positioning hole.

7. The concrete slump measuring device according to claim 1, characterized in that: A receiving plate for receiving splashed materials is arranged on the outside of the collapse cone.

8. The concrete slump measuring device according to claim 1, characterized in that: One side of the upper opening of the positioning hole protrudes into the positioning hole to form a protrusion, and a corresponding side of the blocking block is provided with a retreat groove matching the protrusion. The lower ends of the protrusion and the retreat groove are provided with matching chamfers, and the chamfers adopt arc transition.

9. The concrete slump measuring device according to claim 1, characterized in that: It also includes a cleaning mechanism, which is used to clean the materials on the bottom plate. It includes a scraper that is attached to the bottom plate and can move, and a collecting trough located on the side of the bottom plate away from the scraper for collecting the scraped materials. The slump scale rod is arranged on the inner side of the scraper, and the long ruler can be placed on the top edge of the scraper.

10. The concrete slump measuring device according to claim 9, characterized in that: The scraper is U-shaped, and flanges are arranged on the edges of both sides of the scraper. The scraper is synchronously driven by electric pushers on both sides to move the flanges on the sides.

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