Gravel sieve matching weighing instrument

Abstract

The utility model relates to a gravel screen matching weighing instrument which is installed on a gravel screen and comprises a hoop clamp for clamping a gravel screen hoop, the hoop clamp is connected with a torque sensor, and the torque sensor is arranged on the side portion of the gravel screen and the side portion of the hoop clamp and used for measuring the weight of aggregate on the gravel screen through torque. According to the aggregate grading device, test detection can be conveniently carried out on a construction site, the aggregate grading condition can be quickly obtained, and blending of different aggregates can be conveniently and timely adjusted according to the aggregate condition on the site.

Description

Technical Field

[0001] The present application relates to the technical field of sand and gravel weighing equipment, and in particular to a weighing instrument for a sand and gravel screen. Background Art

[0002] Aggregates such as manufactured sand and gravel and recycled aggregates are often obtained through crushing and screening. Due to fluctuations in production conditions, the gradation of each individual particle size aggregate often fluctuates. In the production of products such as concrete and inorganic binders, the blending process is based on the individual particle sizes, necessitating experimental testing of the gradation of each aggregate size.

[0003] At present, the grading of sand and gravel aggregates is screened by sand and gravel sieves. The sieve is placed on a vibrating screen for vibration screening, and then the aggregates on each sand and gravel sieve are poured out and weighed separately.

[0004] However, existing weighing instruments all use vertical gravity sensor detection, are relatively large, and are only used in laboratories. They are not suitable for use on construction and production sites. At the same time, the cleaning operation of the weighing instruments is labor-intensive.

[0005] Based on this, the instruments required for the detection method are large and the operation is cumbersome, resulting in a low frequency of testing of sand and gravel aggregates and a loss of timely control over product production quality. Utility Model Content

[0006] The purpose of this application is to provide a weighing instrument for a sand and gravel screen, which can facilitate on-site testing and detection, help to quickly obtain the aggregate grading situation, and facilitate timely adjustment of the blending of different aggregates according to the on-site aggregate conditions.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a weighing instrument for a sand and gravel screen, which is installed on the sand and gravel screen and includes a clamp for clamping the clamp of the sand and gravel screen. The clamp is connected to a torque sensor, and the torque sensor is arranged on the side of the sand and gravel screen and the clamp, and is used to measure the weight of the aggregate on the sand and gravel screen through torque.

[0008] In an optional embodiment, the clamp includes a clamp ring and a fastening assembly, the sand and gravel screen includes a cylindrical side wall, the clamp ring is connected to the outside of the cylindrical side wall, and the fastening assembly and the torque sensor are relatively arranged on both sides of the clamp ring in the radial direction.

[0009] In an optional embodiment, the clamp ring includes a fixed connection end and a bayonet joint end, the fixed connection end is connected to the torque sensor, and the fastening assembly detachably fixes the bayonet joint end.

[0010] In an optional embodiment, the sand and gravel screen includes a plurality of sand and gravel screens arranged in a stacked manner, and the clamping clamp and the torque sensor respectively correspond to the sand and gravel screens one by one.

[0011] In an optional embodiment, a connecting shaft is provided on the side of each of the torque sensors, and the connecting shaft is used to connect a plurality of the torque sensors in series.

[0012] In an optional embodiment, a plurality of the connecting shafts are arranged in series on the same straight line, the extension direction of each connecting shaft is perpendicular to the installation direction of the sand and gravel screen, and a bubble level is installed on the connecting shaft at the top.

[0013] In an optional embodiment, the torque sensor is connected to a handheld control terminal, which includes a display screen, operation keys and a data receiving port. The torque sensor is connected to a data transmission port, which is electrically connected to the data receiving port.

[0014] In an optional embodiment, an auxiliary vibration component is further included, which includes a clamping frame and a plurality of vibrators. The plurality of stacked sand and gravel screens are clamped and fixed on the clamping frame. The vibrators are attached to the outside of the clamp or the sand and gravel screen for vibrating and screening the aggregate on the sand and gravel screen.

[0015] In an optional embodiment, the clamping frame includes two clamping claws located on both sides of the top and bottom, the clamping claw located on the top side is press-fitted above the top sand and gravel screen, and the clamping claw located on the bottom side is supported below the bottom sand and gravel screen;

[0016] The clamping claws are connected to a telescopic clamping rod, which includes a fixed rod in the middle and a telescopic rod that can be telescoped relative to the fixed rod. The clamping claws are respectively connected to the ends of the telescopic rod.

[0017] In an optional embodiment, the vibrator includes a vibrating plate, a vibration damping rod is connected between the vibrating plate and the clamping frame, the vibration damping rod includes a fixing rod and a vibration damping spring, the fixing rod is connected to the clamping frame, and the vibration damping spring abuts against the vibrating plate.

[0018] By setting a clamp to clamp the sand and gravel screen clamp and connecting a torque sensor to the sides of the sand and gravel screen and the clamp, the torque applied to the torque sensor by the sand and gravel screen, the clamp and the aggregate can be matched with the mass of the three. Based on the fixed mass of the sand and gravel screen and the clamp, the mass of the aggregate on the sand and gravel screen can be obtained.

[0019] The sand and gravel screen in the utility model is equipped with a weighing instrument, which can conveniently detect aggregates on the construction site, is conducive to quickly obtaining the aggregate grading situation, and is convenient for timely adjusting the blending of different aggregates according to the on-site aggregate conditions.

[0020] It avoids the tedious process of additional weighing and testing in the laboratory, improves the testing efficiency of sand and gravel aggregates, and can timely control the production quality of concrete, inorganic binders and other products at the operation site.

[0021] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the coordination relationship between the torque sensor, clamping clamp and sand and gravel screen in this application;

[0024] Figure 2 for Figure 1 Schematic diagram of the top view structure;

[0025] Figure 3 This is a schematic diagram of the structure of multiple sand and gravel screens equipped with weighing instruments after being stacked;

[0026] Figure 4 It is a structural diagram of the handheld control terminal;

[0027] Figure 5 Schematic diagram of the structure of the auxiliary vibration component.

[0028] icon:

[0029] 1-sand and gravel screen; 11-clamping clamp; 11a-clamping ring; 11b-fastening component;

[0030] 2- torque sensor; 21- data transmission port;

[0031] 3-Connecting shaft;

[0032] 4-Bubble level;

[0033] 5-handheld control terminal; 51-display screen; 52-control keys; 53-data receiving port;

[0034] 6- auxiliary vibration assembly; 61- clamping frame; 61a- clamping claw; 61b- clamping rod; 61c- fixing rod; 61d- telescopic rod; 62- vibrator; 63- vibration damping rod. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0037] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0038] The sand and gravel screen equipped with a weighing instrument in this application is mainly used in the grading production process of recycled building aggregates. Specifically, it provides a portable weighing device to weigh the screened aggregates at the production site, reducing the tedious testing procedures in the laboratory. The aggregate grading status can be quickly obtained according to the on-site weighing results, and the blending of different aggregates can be adjusted according to the aggregate grading status to achieve timely control of product production quality.

[0039] The sand and gravel screen equipped with a weighing instrument in the utility model first arranges multiple sand and gravel screens with different sieve holes in layers, then pours mixed aggregate into the top sand and gravel screen, and after vibration screening, aggregates of different particle sizes are retained on the screen of the sand and gravel screen, and then the quality of the aggregates on different sand and gravel screens is tested respectively.

[0040] Based on the above process, the weighing instrument for sand and gravel screen mainly includes two parts, namely the component structure of vibration screening and the component structure of weighing aggregate.

[0041] Specifically, see Figure 1-Figure 3 As for the weighing-related component structure, it is installed on the sand and gravel screen 1, including a clamp 11 for clamping the sand and gravel screen 1. The clamp 11 is connected to a torque sensor 2. The torque sensor 2 is arranged on the side of the sand and gravel screen 1 and the clamp 11, and is used to measure the weight of the aggregate on the sand and gravel screen 1 through torque.

[0042] The sand and gravel screen 1 is clamped with the clamp 11, and a torque sensor 2 is installed on the side of the clamp 11. The torque sensor 2 can effectively detect the torque value of the clamp 11, the sand and gravel screen 1 and the aggregate evenly spread on the sand and gravel screen 1, and the total weight of the above three can be calculated. Combined with the uniform and regular weight of the clamp 11 and the sand and gravel screen 1, the weight of the aggregate screened and retained on the sand and gravel screen 1 can be further obtained, thereby providing a realistic basis for the aggregate grading.

[0043] The principle of the weighing-related components in this utility model is that the gravel screen 1 has a fixed size and a fixed lever arm. When the screen surface is horizontal, the aggregate retained after screening is evenly distributed. The mass of the aggregate on the gravel screen 1 can be calculated by torque measurement. In field conditions, considering sampling fluctuations and the demand for aggregate used in production, although the measurement accuracy cannot reach the level of a balance, it can meet the needs of use.

[0044] From a specific structural perspective, the clamp 11 includes a clamp ring 11a and a fastening assembly 11b. The sand and gravel screen 1 generally includes a cylindrical side wall. The clamp ring 11a is connected to the outside of the cylindrical side wall. The fastening assembly 11b and the torque sensor 2 are relatively arranged on both sides of the clamp ring 11a in the radial direction.

[0045] Preferably, the fastening assembly 11b and the torque sensor 2 are relatively arranged on both sides of the same radial direction of the clamp ring 11a, which can restore the fixed lever arm of the sand and gravel screen 1 to the greatest extent, thereby improving the accuracy of the correspondence between torque and mass.

[0046] The hoop ring piece 11 a includes a fixed connection end and a bayonet joint end. The fixed connection end is connected to the core sensing component of the torque sensor 2 , and the fastening component 11 b detachably fixes the bayonet joint end.

[0047] Specifically, the clamp ring 11a includes a steel belt structure with a certain width that surrounds the outer wall of the sand and gravel screen 1. The bayonet joint end includes two flexible ends of the steel belt. The fastening component 11b can be a hand-tightened screw that fastens the two flexible ends, or it can be an additional connecting plate. After the two flexible ends are brought close to each other to clamp the outer wall of the sand and gravel screen 1, they are fastened by screws that pass through the connecting plate and the steel belt at the same time.

[0048] The fixed connection end includes an end on the other side of the flexible connection end. The fixed connection end is connected to the torque sensor 2, so that the torque sensor 2 can sense the torque value applied to the torque sensor 2 by the three together, which is conducive to subsequent corresponding calculations.

[0049] It should be pointed out that when pre-tightening the clamp 11 , it should be done in a horizontal state to avoid excessive clamping causing a clamping torque on the torque sensor 2 that affects the moment of gravity of the three.

[0050] Based on the screening of mixed aggregates, the sand and gravel screen 1 includes multiple stacked arrangements, and the clamping clamps 11 and the torque sensors 2 correspond one to one with the sand and gravel screen 1, that is, each torque sensor 2 correspondingly detects the torque of the clamping clamp 11, the sand and gravel screen 1 and the aggregate on the screen surface.

[0051] In order to be able to detect multiple different stacked sand and gravel screens 1 separately, the sides of the torque sensors 2 are each provided with connecting shafts 3 , which are not connected to the clamping clamp 11 and therefore do not affect the detection of the torque sensor 2 .

[0052] After different sand and gravel screens 1 are stacked, multiple torque sensors 2 are connected in series via the connecting shaft 3, so that different sand and gravel screens 1 can be detected and weighed in a timely manner after screening, thereby improving operation efficiency.

[0053] In order to ensure the accuracy of detection, the extension direction of each connecting shaft 3 is perpendicular to the installation direction of the sand and gravel screen 1, and the connecting shafts 3 are arranged in series on the same straight line. Preferably, the extension direction of the connecting shafts 3 arranged in series is perpendicular to the screen surface of the sand and gravel screen 1 and parallel to the vertical height direction of the torque sensor 2, which can ensure the accuracy of weighing the evenly laid aggregate to the greatest extent.

[0054] Based on the fact that the extension direction of the connecting shaft 3 is perpendicular to the installation direction of the sand and gravel screen 1, and combined with the connection of the connecting shaft 3 on the torque sensor 2, a bubble level 4 is installed on the connecting shaft 3 at the top, which can further ensure the accurate and effective measurement direction of the torque sensor 2 and improve the measurement accuracy.

[0055] Combine Figure 4 In order to quickly calculate and read the torque value, the torque sensor 2 has built-in data processing hardware and is connected to a handheld control terminal 5. The handheld control terminal 5 includes a display screen 51, control keys 52 and a data receiving port 53. The display screen 51 is mainly used to display the calculated torque value, and the control keys 52 are mainly used to control different operations, including equipment switching, tare clearing, calculation and weighing, and other steps.

[0056] The torque sensor 2 is connected to a data transmission port 21 . By electrically connecting the data transmission port 21 on the torque sensor 2 with the data receiving port 53 , a communication connection between the torque sensor 2 and the handheld control terminal 5 can be achieved, thereby performing effective data transmission.

[0057] See also Figure 5 The structure of the vibrating screening component is specifically composed of an auxiliary vibration assembly 6, which includes a clamping frame 61 and multiple vibrators 62. Multiple stacked sand and gravel screens 1 are clamped and fixed on the clamping frame 61. Through this arrangement, the overall structure of the stacked screen can be realized, which is conducive to the screening operation of the aggregate mixture before weighing.

[0058] The vibrator 62 is attached to the outside of the clamp 11 or the sand and gravel screen 1 and is used to vibrate and screen the aggregate on the sand and gravel screen 1 .

[0059] The clamping frame 61 includes two clamping claws 61a located on the top and bottom sides. The clamping claw 61a located on the top side is pressed onto the top of the top sand and gravel screen 1, and the clamping claw 61a located on the bottom side is supported on the bottom of the bottom sand and gravel screen 1, which can clamp and fix the stacked sand and gravel screens 1 as a whole.

[0060] The clamping claw 61a is connected to the retractable clamping rod 61b. Specifically, the clamping claw can follow the extension and retraction of the clamping rod 61b to adjust the distance between the two clamping claws 61a, thereby adjusting the clamping range according to different numbers of sand and gravel screens 1.

[0061] Furthermore, the clamping rod 61b includes a fixed rod 61c located in the middle and a telescopic rod 61d that can be telescoped relative to the fixed rod 61c, and the two clamping claws 61a on the top and bottom sides are respectively connected to the ends of the telescopic rod 61d.

[0062] Specifically, the telescopic rod 61d includes two rods, which are respectively arranged on the upper and lower sides of the fixed rod 61c. One of the clamping claws 61a is connected to the top end of the upper telescopic rod 61d, and the other clamping claw 61a is connected to the bottom end of the lower telescopic rod 61d. The telescopic rod 61d and the fixed rod 61c can be clamped and fixed by setting positioning holes and spring protrusions.

[0063] The vibrator 62 includes a vibrating plate, which is attached to the outer side wall of the clamp 11 or the gravel screen 1 and can generate slight vibration to vibrate and screen the mixed aggregate poured onto the top gravel screen 1 .

[0064] In order to ensure that the clamping claws 61a effectively fasten the sand and gravel screen 1 on both sides of the top and bottom, and prevent the fastening state from being affected during the vibration process, a vibration-damping rod 63 is connected between the vibration plate and the clamping frame 61. The vibration-damping rod 63 includes a fixed rod 61c and a vibration-damping spring. The fixed rod 61c is connected to the clamping frame 61, and the vibration-damping spring abuts against the vibration plate, which can ensure the stability of the clamping and fixing of the screen to the greatest extent, and at the same time reduce the mutual influence between vibration and clamping to a minimum.

[0065] At present, the testing and weighing of aggregates are limited to laboratory operations, and samples need to be taken back to the laboratory. The data is lagging. If repeated testing is required, the workload of round-trip testing increases. The experiments are cumbersome, which often leads to insufficient testing frequency. The aggregate grading is prone to fluctuations, which in turn leads to fluctuations in product quality.

[0066] Laboratory instruments are often difficult to carry, the construction and production site environment is harsh, and the instruments are not convenient to store and use on site. The laboratory and the site belong to two different work areas, and there are deviations and delays in time and space. The weighing, sieving, weighing, cleaning, data recording and sorting operations in the experiment are relatively cumbersome.

[0067] The portable weighing instrument for the sand and gravel screen in this utility model, consisting of a weighing-related component structure, a vibrating screening component structure, and a handheld control terminal 5, allows the sand and gravel screen to be stored at the construction site, allowing flexible access to the sand and gravel screen 1 with the required mesh size, feeding the material on-site at once, and displaying the results in real time. This facilitates convenient and timely testing, helping to adjust the mix ratio based on the actual gradation in real time, thereby ensuring product quality.

[0068] Before use, secure the required sand and gravel screens 1, the clamp 11, and the mounting bracket 61. Place a bubble level 4 on top to ensure measurement direction. Sequentially connect the data transmission ports 21 corresponding to each set of screens to the data receiving ports 53 on the handheld control terminal 5. Stretch the connecting shaft 3 to separate the sand and gravel screens 1. If necessary, rotate the connecting shaft 3 to dislocate the sand and gravel screens 1. Perform the tare and zero reset operation on the handheld control terminal 5 while maintaining a horizontal position.

[0069] Retract the connecting shaft 3, assemble the sieve, pour in the aggregate sample, and shake the sieve manually or use the auxiliary vibration component 6 to perform screening. Vibrate for 30 seconds to 3 minutes according to the aggregate situation.

[0070] Stretch and rotate the connecting shaft 3 to separate the sand and gravel screens 1. Roughly level the aggregate on each screen. Weigh and calculate on the handheld control terminal 5 while keeping it horizontal. The aggregate gradation is displayed on the display 51. After use, simply invert the separated screens for cleaning, and they can be quickly reset for the next test.

[0071] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0072] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A weighing instrument for a sand and gravel screen, installed on a sand and gravel screen, characterized in that: It comprises a clamp for clamping the sand and gravel screen clamp, the clamp is connected to a torque sensor, the torque sensor is arranged on the sand and gravel screen and the side of the clamp, and is used to measure the weight of aggregate on the sand and gravel screen through torque.

2. The weighing instrument for sand and gravel screen according to claim 1, characterized in that: The clamp includes a clamp ring and a fastening assembly, the gravel screen includes a cylindrical side wall, the clamp ring is connected around the outside of the cylindrical side wall, and the fastening assembly and the torque sensor are relatively arranged on both sides of the clamp ring in the radial direction.

3. The weighing instrument for the sand and gravel screen according to claim 2, characterized in that: The hoop ring piece includes a fixed connection end and a bayonet joint end, the fixed connection end is connected to the torque sensor, and the fastening assembly is detachably fixed to the bayonet joint end.

4. The weighing instrument for sand and gravel screen according to claim 1, characterized in that: The sand and gravel screen includes a plurality of sand and gravel screens arranged in a stacked manner, and the clamping clamp and the torque sensor correspond to the sand and gravel screens one by one respectively.

5. The weighing instrument for the sand and gravel screen according to claim 4, characterized in that: The sides of the torque sensors are each provided with a connecting shaft, and the connecting shaft is used to connect a plurality of the torque sensors in series.

6. The weighing instrument for the sand and gravel screen according to claim 5, characterized in that: A plurality of the connecting shafts are arranged in series on the same straight line, the extension direction of each connecting shaft is perpendicular to the installation direction of the sand and gravel screen, and a bubble level is installed on the connecting shaft at the top.

7. The weighing instrument for sand and gravel screen according to any one of claims 1 to 6, characterized in that: The torque sensor is connected to a handheld control terminal, which includes a display screen, operation keys and a data receiving port. The torque sensor is connected to a data transmission port, which is electrically connected to the data receiving port.

8. The weighing instrument for sand and gravel screen according to any one of claims 1 to 6, characterized in that: It also includes an auxiliary vibration component, which includes a clamping frame and multiple vibrators. The multiple stacked sand and gravel screens are clamped and fixed on the clamping frame. The vibrators are attached to the outside of the clamp or the sand and gravel screen and are used to vibrate and screen the aggregate on the sand and gravel screen.

9. The weighing instrument for sand and gravel screen according to claim 8, characterized in that: The clamping frame includes two clamping claws located on both sides of the top and bottom. The clamping claw located on the top side is pressed onto the top of the top sand and gravel screen, and the clamping claw located on the bottom side is supported on the bottom of the bottom sand and gravel screen. The clamping claws are connected to a telescopic clamping rod, which includes a fixed rod in the middle and a telescopic rod that can be telescoped relative to the fixed rod. The clamping claws are respectively connected to the ends of the telescopic rod.

10. The weighing instrument for sand and gravel screen according to claim 8, characterized in that: The vibrator includes a vibrating plate. A vibration damping rod is connected between the vibrating plate and the clamping frame. The vibration damping rod includes a fixing rod and a vibration damping spring. The fixing rod is connected to the clamping frame. The vibration damping spring abuts against the vibrating plate.

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