An accurate weighing device for asphalt admixtures

Abstract

The present invention belongs to the technical field of weighing equipment, and in particular relates to a precise weighing equipment for asphalt admixtures, including a support frame and a gravity sensor installed on the upper surface of the support frame. A weighing box is installed inside the support frame. A placement frame is fixedly welded to the side of the weighing box, and the placement frame is placed on the upper end of the gravity sensor. By setting a cleaning structure and a linkage mechanism, when the user exports the weighed asphalt admixtures in the weighing box, the movement of the baffle can be realized by pulling the handle, thus completing the unloading. At the same time, the movement of the baffle will drive the first L-shaped plate and the toothed plate to move. Under the meshing action of the toothed plate and the gear disc, the rotating rod drives the first bevel gear to rotate, and under the meshing action of the first bevel gear and the second bevel gear, the rotating shaft drives the winding disc to rotate, and finally the traction wire pulls the scraping frame to move upward, completing the cleaning of the inner wall of the weighing box by the scraping frame.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing equipment, and in particular to a precise weighing equipment for asphalt admixtures. Background Art

[0002] In the industrial weighing process of asphalt admixtures, accuracy and efficiency are crucial considerations. However, traditional weighing equipment often faces a series of challenges when dealing with materials such as asphalt admixtures that have adhesiveness and abrasiveness. These challenges not only relate to the accuracy of weighing results but also directly affect the maintenance cost and service life of the equipment.

[0003] Specifically, after the weighing of traditional weighing equipment is completed, there are often residues of asphalt admixtures on the inner wall of the weighing box. These residues are not only difficult to manually remove but also accumulate during subsequent weighing processes, resulting in a gradual increase in weighing errors. In addition, the adhesion of asphalt admixtures to the inner wall of the weighing box may cause wear and corrosion on the surface of the weighing box, which not only shortens the service life of the equipment but also may further exacerbate weighing errors due to surface unevenness. To address these problems, some traditional weighing equipment attempts to use manual cleaning methods, but this method is not only inefficient but also prone to introducing new errors due to human factors. At the same time, manual cleaning may also cause physical damage to the weighing box, further affecting the accuracy and stability of the equipment.

[0004] On the other hand, traditional weighing equipment needs to perform a tare operation, that is, zero the weight of the equipment itself, after each weighing to ensure the accuracy of subsequent weighing. However, this process often requires manual participation, which is not only cumbersome but also prone to errors due to improper operation or negligence. Especially in continuous weighing operations, frequent manual taring will seriously affect the operation efficiency and increase the risk of weighing errors. For this reason, we provide a precise weighing equipment for asphalt admixtures. Summary of the Invention

[0005] To solve the above problems, the present invention proposes a precise weighing equipment for asphalt admixtures, which more precisely solves the problems raised in the above background art.

[0006] The present invention is achieved through the following technical solutions:

[0007] The invention proposes a precise weighing equipment for asphalt admixtures, including a support frame and a gravity sensor installed on the upper surface of the support frame. A weighing box is installed inside the support frame, and a placement frame is fixedly welded to the side of the weighing box, and the placement frame is placed on the upper end of the gravity sensor for suspending the weighing box for weighing.

[0008] A digital display component is fixedly installed on the side of the support frame, and the digital display component includes a signal processing circuit, a microprocessor, and a display, which are used to cooperate with the gravity sensor and realize the weighing function;

[0009] An L-shaped clamping plate is fixedly connected to the surface of the lower port of the weighing box. A shielding plate is slidably connected between the two L-shaped clamping plates, and a reset component is connected between the L-shaped clamping plate and the shielding plate;

[0010] A cleaning structure is connected to the inner wall of the weighing box;

[0011] The cleaning structure includes a scraping frame slidably connected to the inner wall of the weighing box. Welding columns are fixedly welded to the inner wall of the scraping frame. A lifting component is connected between the weighing box and the welding columns for raising and lowering the scraping frame;

[0012] A linkage mechanism is connected between the weighing box and the shielding plate for the synchronous operation of the lifting component;

[0013] A cavity is built between the outer surface and the inner wall of the weighing box. An oiling mechanism is arranged in the cavity for oiling the inner wall of the weighing box.

[0014] Furthermore, the lifting component includes a traction wire welded around the welding column and a fixed pulley fixedly installed on the upper port surface of the weighing box. The traction wire is wound around the periphery of the fixed pulley. A U-shaped plate is fixedly installed on the side of the weighing box. A rotating shaft rod is rotatably connected to the U-shaped plate through a bearing. A winding disc is fixedly connected to the periphery of the rotating shaft rod and is designed inside the U-shaped plate. The end of the traction wire is wound around the periphery of the winding disc.

[0015] Furthermore, the linkage mechanism includes a reinforcing block fixedly welded to the side of the weighing box and a first L-shaped plate fixedly welded to the lower surface of the shielding plate. The rotating shaft rod is rotatably connected to the reinforcing block through a bearing. A toothed plate is fixedly connected to the upper end of the first L-shaped plate. A rotating rod is rotatably connected to the side of the weighing box through a bearing. A gear disc is fixedly connected to the periphery of the rotating rod and is meshed with the toothed plate. A first bevel gear is fixedly connected to the end of the rotating rod. A second bevel gear is fixedly connected to the end of the rotating shaft rod and is meshed with the first bevel gear.

[0016] Furthermore, the oiling mechanism includes a sponge body placed on the bottom wall of the cavity and a plugging rod inserted into the top wall of the cavity. An oil outlet through groove is opened on the inner wall of the weighing box and is designed to communicate with the cavity. A pressing plate is fixedly connected to the lower end of the plugging rod, and a gap is provided between the pressing plate and the cavity. A reciprocating component is connected between the side of the weighing box and the plugging rod.

[0017] Further, the reset component includes a strip-shaped through groove opened on the side of the L-shaped clamping plate. A horizontal fixing rod is fixedly connected between the two end walls of the strip-shaped through groove. A second spring is sleeved around the horizontal fixing rod. A sliding sleeve block is slidably sleeved around the horizontal fixing rod, and the sliding sleeve block is slidably connected to the inner wall of the strip-shaped through groove. There are two sliding sleeve blocks arranged around one of the horizontal fixing rods. The opposite surfaces of the four sliding sleeve blocks are fixedly connected to the two side surfaces of the shielding plate.

[0018] Further, the reciprocating component includes an L-shaped plate II fixedly connected to the upper end of the inserting rod and a guiding sliding sleeve block fixedly connected to the side of the weighing box. A rectangular through groove is opened on the vertical surface of the L-shaped plate II. A vertical fixing rod is fixedly connected between the two end walls of the rectangular through groove. A first spring is sleeved around the vertical fixing rod. The guiding sliding sleeve block is slidably connected to the inner wall of the rectangular through groove and is slidably sleeved around the vertical fixing rod.

[0019] Further, an extending plate is fixedly welded to the side of the weighing box. A tare button is fixedly installed on the upper surface of the extending plate, and the tare button is electrically connected to the digital display component. A lapping plate is fixedly connected between the two L-shaped plates II. A fixing plate is fixedly welded to the periphery of the traction steel wire. A through hole is opened on the surface of the lapping plate for the passage of the traction steel wire.

[0020] Further, an oil injection hole is opened on the upper port surface of the weighing box, and the oil injection hole is in through communication with the top wall of the cavity body for adding lubricating oil into the cavity body. A handle is fixedly connected to one end surface of the shielding plate for pulling the translational movement of the shielding plate.

[0021] Further, one end of the second spring is fixedly connected to the end wall of the strip-shaped through groove, and the other end of the second spring is fixedly connected to one end surface of one of the sliding sleeve blocks.

[0022] Further, the upper end of the first spring is fixedly connected to the end wall of the rectangular through groove, and the lower end of the first spring is fixedly connected to the upper surface of the guiding sliding sleeve block.

[0023] Advantages of the present invention:

[0024] By providing a cleaning structure and a linkage mechanism, when the user exports the weighed asphalt admixture in the weighing box, the movement of the shielding plate can be realized by pulling the handle, thereby completing the unloading. At the same time, the movement of the shielding plate will drive the movement of the L-shaped plate I and the toothed plate. Under the meshing action of the toothed plate and the gear disc, the rotating rod drives the first bevel gear to rotate, and under the meshing action of the first bevel gear and the second bevel gear, the rotating shaft drives the winding disc to rotate, and finally the traction steel wire drives the scraping frame to move upward, completing the cleaning of the inner wall of the weighing box by the scraping frame, avoiding inaccurate weighing caused by residual attachments in the later stage, and achieving a better weighing effect.

[0025] In the present invention, by providing an oiling mechanism, when the traction steel wire is being wound up, the fixing plate will move downward synchronously. After the scraping frame rises to a certain extent, the fixing plate will contact and push the overlapping plate to move downward, so that the second L-shaped plate drives the insertion rod to move downward, and the pressing plate squeezes the sponge body, so that the lubricating oil inside the sponge body is extruded and flows through the oil outlet groove to the inner wall of the weighing box. In this way, on the one hand, it can reduce the adhesion of the later asphalt admixture, and on the other hand, it can reduce the wear and corrosion of the asphalt admixture and the scraping frame on the inner wall of the weighing box, further ensuring the accuracy of the later weighing.

[0026] In the present invention, by providing an extension plate and a tare button, when the overlapping plate descends to a certain extent, it will touch and press the tare button, and the tare button is electrically connected to the digital display component, so that the tare of the digital display component can be realized, avoiding the influence of its own certain weight on the later weighing accuracy, and improving the accuracy of the equipment during weighing once again. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present invention;

[0028] Figure 2 is a structural schematic diagram after the L-shaped clamping plate and the shielding plate of an embodiment of the present invention are detached;

[0029] Figure 3 is a structural sectional view of an embodiment of the present invention;

[0030] Figure 4 is a connection structural schematic diagram of the L-shaped clamping plate and the shielding plate of an embodiment of the present invention;

[0031] Figure 5 is an embodiment of the present invention Figure 1 The enlarged view of the structure at A in;

[0032] Figure 6 is an embodiment of the present invention Figure 1 The enlarged view of the structure at B in;

[0033] Figure 7 is an embodiment of the present invention Figure 3 The enlarged view of the structure at C in.

[0034] In the figure: 1, support frame; 2, gravity sensor; 3, weighing box; 4, placing rack; 5, digital display component; 6, L-shaped clamping plate; 7, shielding plate; 8, scraping frame; 9, welding post; 10, towing steel wire; 11, fixed pulley; 12, U-shaped plate; 13, rotating shaft rod; 14, winding disc; 15, reinforcement block; 16, first L-shaped plate; 17, toothed plate; 18, rotating rod; 19, gear disc; 20, first bevel gear; 21, second bevel gear; 22, cavity body; 23, sponge body; 24, oil outlet through groove; 25, extrusion plate; 26, inserting rod; 27, second L-shaped plate; 28, guiding sliding sleeve block; 29, rectangular through groove; 30, vertical fixing rod; 31, first spring; 32, overlapping plate; 33, fixing plate; 34, through hole; 35, oil injection hole; 36, extending plate; 37, skin cleaning button; 38, strip-shaped through groove; 39, horizontal fixing rod; 40, second spring; 41, sliding sleeve block; 42, handle. Detailed implementation manners

[0035] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0036] As Figures 1-7 shown, a precise weighing device for asphalt admixture proposed in an embodiment of the present invention has a structure including a stable support frame 1 and a gravity sensor 2 precisely installed on its upper end. The weighing box 3 is ingeniously embedded inside the support frame 1, and the weighing box is stably suspended on the gravity sensor 2 through the placing rack 4 welded on the side, thereby realizing non-contact suspended weighing, which greatly improves the weighing accuracy. In addition, an advanced digital display component 5 is equipped on one side of the support frame 1. The digital display component 5 integrates a signal processing circuit, a high-performance microprocessor and an intuitive display, and closely cooperates with the gravity sensor 2 to display and process the weighing data in real time; an L-shaped clamping plate 6 is ingeniously designed below the weighing box 3, and a shielding plate 7 is slidably installed between the two L-shaped clamping plates 6. The shielding plate 7 is connected to the L-shaped clamping plate 6 through a precisely designed reset component to ensure quick reset after operation. The inner wall of the weighing box 3 is also innovatively configured with a cleaning structure, which includes a slidable scraping frame 8. The scraping frame 8 is welded with a welding post 9 and is driven by a lifting component to lift and lower, so as to efficiently clean the inner wall of the weighing box 3. A linkage mechanism is also ingeniously arranged between the weighing box 3 and the shielding plate 7 to realize the synchronous movement of the lifting component when the shielding plate 7 moves. In addition, a cavity body 22 is designed between the outer wall and the inner wall of the weighing box 3, and an oil coating mechanism is built in to effectively extend the service life of the weighing box 3.

[0037] Furthermore, the core of the lifting component lies in the traction wire 10 around the welding column 9 and the fixed pulley 11 configured at the upper end of the weighing box 3. The traction wire 10 bypasses the fixed pulley 11, and its end is fixedly connected to the winding disc 14 on the U-shaped plate 12. The U-shaped plate 12 is connected to the rotating shaft rod 13 through a bearing. As the rotating shaft rod 13 rotates, the winding disc 14 tightens or releases the traction wire 10, thereby driving the lifting of the scraping frame 8.

[0038] Furthermore, the design of the linkage mechanism ensures that the movement of the shielding plate 7 can trigger the action of the lifting component synchronously. This mechanism includes the reinforcing block 15 on the side of the weighing box 3, the L-shaped plate one 16 at the lower end of the shielding plate 7, and the engaging tooth plate 17 connected thereto. A rotating rod 18 is also installed on the side of the weighing box 3, and the gear disc 19 fixed thereon meshes with the engaging tooth plate 17. A bevel gear one 20 is installed at one end of the rotating rod 18, which meshes with the bevel gear two 21 at the end of the rotating shaft rod 13, forming an efficient transmission system.

[0039] Furthermore, the oiling mechanism is located in the cavity 22 on the inner wall of the weighing box 3, mainly composed of the sponge body 23 at the bottom and the plugging rod 26 at the top. An oil outlet through groove 24 is opened on the inner wall of the weighing box 3, which is connected to the cavity 22. The lower end of the plugging rod 26 is connected to the extrusion plate 25, maintaining a small gap with the cavity 22. The plugging rod 26 and the side of the weighing box 3 are connected through a reciprocating component. When the scraping frame 8 moves up and down, the reciprocating component drives the plugging rod 26 and the extrusion plate 25 to move, squeezing the sponge body 23 to release lubricating oil to the inner wall of the weighing box 3.

[0040] Furthermore, the reset component ensures that the shielding plate 7 can automatically return to its initial position after moving. This component includes the strip-shaped through groove 38 on the side of the L-shaped clamping plate 6, the horizontal fixing rod 39, and the spring two 40 sleeved around the horizontal fixing rod 39. A sliding sleeve block 41 is slidably installed around the horizontal fixing rod 39, and the sliding sleeve block 41 is fixedly connected to both sides of the shielding plate 7, forming a reset mechanism.

[0041] Furthermore, the reciprocating component is designed to drive the plugging rod 26 and the extrusion plate 25 of the oiling mechanism to perform reciprocating motion. It includes the L-shaped plate two 27 at the upper end of the plugging rod 26, the guiding sliding sleeve block 28 on the side of the weighing box 3, and the rectangular through groove 29 and the vertical fixing rod 30 connecting the two. A spring one 31 is sleeved on the vertical fixing rod 30, providing a restoring force for the reciprocating motion.

[0042] Furthermore, an extending plate 36 is installed on the side of the weighing box 3, on which a tare button 37 is provided, electrically connected to the digital display component 5, facilitating automatic zeroing after each weighing. A lapping plate 32 is installed between the L-shaped plates two 27, providing a channel for the traction wire 10. In addition, an oil injection hole 35 is opened at the upper end of the weighing box 3, facilitating the addition of lubricating oil to the cavity 22. One end of the shielding plate 7 is equipped with a handle 42, facilitating manual operation.

[0043] Further, one end of the second spring 40 is fixed to the end wall of the strip-shaped through groove 38, and the other end is connected to the sliding sleeve block 41 to ensure the stable reset of the shielding plate 7; the upper end of the first spring 31 is fixed to the end wall of the rectangular through groove 29, and the lower end is connected to the guide sliding sleeve block 28 to provide the necessary reset force for the reciprocating motion of the oiling mechanism.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precise weighing device for asphalt admixtures, comprising a support frame (1) and a gravity sensor (2) installed on the upper surface of the support frame (1), characterized in that, A weighing box (3) is installed inside the support frame (1). A placing rack (4) is fixedly welded to the side of the weighing box (3), and the placing rack (4) is placed on the upper end of the gravity sensor (2) for suspending the weighing box (3) for weighing. A digital display component (5) is fixedly installed on the side of the support frame (1). The digital display component (5) includes a signal processing circuit, a microprocessor, and a display, which are used in cooperation with the gravity sensor (2) to achieve the weighing function. An L-shaped clamping plate (6) is fixedly connected to the surface of the lower port of the weighing box (3). A shielding plate (7) is slidably connected between the two L-shaped clamping plates (6). A reset component is connected between the L-shaped clamping plate (6) and the shielding plate (7). A cleaning structure is connected to the inner wall of the weighing box (3). The cleaning structure includes a scraping frame (8) slidably connected to the inner wall of the weighing box (3). A welding post (9) is fixedly welded to the inner wall of the scraping frame (8). A lifting assembly is connected between the weighing box (3) and the welding post (9) for lifting and lowering the scraping frame (8). A linkage mechanism is connected between the weighing box (3) and the shielding plate (7) for the synchronous operation of the lifting assembly. A cavity (22) is provided between the outer surface and the inner wall of the weighing box (3). An oiling mechanism is arranged in the cavity (22) for oiling the inner wall of the weighing box (3). The lifting assembly includes a traction wire (10) welded around the periphery of the welding post (9) and a fixed pulley (11) fixedly installed on the upper port surface of the weighing box (3). The traction wire (10) is wound around the periphery of the fixed pulley (11). A U-shaped plate (12) is fixedly installed on the side of the weighing box (3). A rotating shaft rod (13) is rotatably connected to the U-shaped plate (12) through a bearing. A winding disc (14) is fixedly connected to the periphery of the rotating shaft rod (13), and the winding disc (14) is designed inside the U-shaped plate (12). The end of the traction wire (10) is wound around the periphery of the winding disc (14). The oiling mechanism includes a sponge body (23) placed on the inner bottom wall of the cavity (22) and a plugging rod (26) inserted into the inner top wall of the cavity (22). An oil outlet through groove (24) is opened on the inner wall of the weighing box (3) and is designed to be in communication with the cavity (22). A pressing plate (25) is fixedly connected to the lower end of the plugging rod (26), and a gap is provided between the pressing plate (25) and the cavity (22). A reciprocating component is connected between the side of the weighing box (3) and the plugging rod (26). The reciprocating component includes an L-shaped plate two (27) fixedly connected to the upper end of the plugging rod (26) and a guiding sliding sleeve block (28) fixedly connected to the side of the weighing box (3). A rectangular through groove (29) is opened on the vertical surface of the L-shaped plate two (27). A standing fixing rod (30) is fixedly connected between the two end walls of the rectangular through groove (29). A first spring (31) is sleeved around the periphery of the standing fixing rod (30). The guiding sliding sleeve block (28) is slidably connected to the inner wall of the rectangular through groove (29) and is slidably sleeved around the periphery of the standing fixing rod (30). A protruding plate (36) is fixedly welded to the side of the weighing box (3). A tare button (37) is fixedly installed on the upper surface of the protruding plate (36), and the tare button (37) is electrically connected to the digital display component (5). A lapping plate (32) is fixedly connected between the two L-shaped plates II (27). A fixing plate (33) is fixedly welded to the periphery of the traction steel wire (10). A through hole (34) is formed in the surface of the lapping plate (32) for the passage of the traction steel wire (10).

2. The precise weighing device for asphalt admixtures according to claim 1, wherein The linkage mechanism includes a reinforcing block (15) fixedly welded to the side of the weighing box (3) and an L-shaped plate I (16) fixedly welded to the lower surface of the shielding plate (7). The rotating shaft rod (13) is rotatably connected to the reinforcing block (15) through a bearing. A toothed plate (17) is fixedly connected to the upper end of the L-shaped plate I (16). A rotating rod (18) is rotatably connected to the side of the weighing box (3) through a bearing. A gear disc (19) is fixedly connected to the periphery of the rotating rod (18), and the gear disc (19) is meshed with the toothed plate (17). A bevel gear I (20) is fixedly connected to the end of the rotating rod (18). A bevel gear II (21) is fixedly connected to the end of the rotating shaft rod (13), and the bevel gear II (21) is meshed with the bevel gear I (20).

3. The precise weighing device for asphalt admixtures according to claim 1, characterized in that, The reset component includes a strip-shaped through groove (38) formed in the side of the L-shaped clamping plate (6). A transverse fixing rod (39) is fixedly connected between the two end walls of the strip-shaped through groove (38). A second spring (40) is sleeved on the periphery of the transverse fixing rod (39). A sliding sleeve block (41) is slidably sleeved on the periphery of the transverse fixing rod (39), and the sliding sleeve block (41) is slidably connected to the inner wall of the strip-shaped through groove (38). There are two sliding sleeve blocks (41) arranged on the periphery of one transverse fixing rod (39). The opposite surfaces of the four sliding sleeve blocks (41) are fixedly connected to the two side surfaces of the shielding plate (7).

4. The precise weighing device for asphalt admixture according to claim 1, characterized in that, An oil injection hole (35) is formed in the upper port surface of the weighing box (3), and the oil injection hole (35) is in through communication with the top wall of the cavity body (22) for adding lubricating oil into the cavity body (22). A handle (42) is fixedly connected to one end surface of the shielding plate (7) for pulling the shielding plate (7) to translate.

5. The precise weighing device for asphalt admixture according to claim 3, characterized in that, One end of the second spring (40) is fixedly connected to the end wall of the strip-shaped through groove (38), and the other end of the second spring (40) is fixedly connected to one end surface of a sliding sleeve block (41).

6. The precise weighing device for asphalt admixtures according to claim 1, characterized in that, The upper end of the first spring (31) is fixedly connected to the end wall of the rectangular through groove (29), and the lower end of the first spring (31) is fixedly connected to the upper surface of the guiding sliding sleeve block (28).

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