Full-suspension floating type metering belt weigher

Abstract

The utility model discloses a full-suspension floating type metering belt weigher, which comprises a rack, a plurality of first carrier roller groups are arranged on the rack, a weigher frame body is arranged between two first carrier roller groups, a support shaft is fixed on the weigher frame body, two ends of the support shaft are respectively arranged on the rack through supports, two ends of the weigher frame body are respectively provided with a second carrier roller group, and the second carrier roller group is arranged on the rack. A weighing sensor is arranged between a supporting plate of the support and the rack, an adjusting plate and a height adjusting assembly are arranged on the supporting plate, and a supporting shaft rotates and moves up and down in the adjusting plate. Compared with the prior art, in the utility model, the second carrier roller group, the scale frame body and the supporting shaft form the floating type weighing frame, and the two weighing sensors are fixed with the support and then are movably connected with the floating type weighing frame, thereby ensuring that the weighing sensors only bear vertical force, and preventing the two groups of weighing sensors from generating internal force through the scale frame in the installation process. And the weighing precision of the belt weigher is ensured.

Description

Technical Field

[0001] This utility model relates to the field of belt scale technology, and in particular to a fully suspended floating metering belt scale. Background Technology

[0002] A belt scale is a dynamic weighing device used to continuously weigh bulk materials during the conveying process, and is mainly installed on belt conveyors. Patent CN206919993U discloses an electronic belt scale and belt scale system, including a scale frame with rollers for abutting the belt; a fixed crossbeam (1) for connecting to a belt support (5); and a weighing sensor (2) set on the fixed crossbeam (1), with the force-bearing end (21) of the weighing sensor (2) connected to the scale frame. The scale frame is provided with rollers that can abut against the belt above the electronic belt scale. In this way, the material presses the belt down under its own weight, and the belt can transfer the weight of the material it receives to the rollers it abuts, and then to the scale frame. Due to the influence of machining errors and assembly precision errors of parts, it is difficult to make the installation height of the two weighing sensors (2) absolutely consistent, and there will always be a slight difference. Secondly, since the force-bearing end (21) of the weighing sensor (2) is fixed to the scale frame, when the screws of the weighing sensor (2) on one side of the scale frame are tightened, the weighing sensor (2) will be pulled by the screws on the other side of the scale frame. This will cause the weighing sensor to generate internal force, which will cause the readings of the weighing sensors (2) on both sides of the scale frame to differ, affecting the weighing accuracy of the belt scale. Summary of the Invention

[0003] This utility model provides a fully suspended floating weighing belt scale to solve the problem that the weighing sensor of the current belt scale is prone to internal force when tightened to the scale frame with screws, which affects the weighing accuracy.

[0004] This utility model provides a fully suspended floating weighing belt scale, including a frame, on which multiple first roller groups are installed, and a scale frame body is provided between two first roller groups. A support shaft is fixed on the scale frame body, and both ends of the support shaft are respectively mounted on the frame via supports. Second roller groups are respectively provided at both ends of the scale frame body. A weighing sensor is provided between the support plate of the support and the frame. An adjustment plate and a height adjustment component are provided on the support plate. The adjustment plate moves up and down along the support plate through the height adjustment component, and the support shaft rotates and moves up and down within the adjustment plate.

[0005] Preferably, the adjusting plate is provided with a V-shaped groove, the support shaft is located in the V-shaped groove, and the end of the support shaft is in contact with the support plate.

[0006] Preferably, the support shaft is mounted on the adjusting plate via a spherical bearing.

[0007] Preferably, a square frame is fixed on the scale frame, and the support shaft is fixed inside the square frame by bearings.

[0008] Preferably, the frame is connected to the scale frame body by a U-shaped clamp, and the U-shaped clamp is fixed to the scale frame body by bolts.

[0009] Preferably, the support plate is provided with a first adjustment hole, and a first fastening screw slides up and down along the first adjustment hole. After passing through the adjustment plate and the first adjustment hole, the first fastening screw is threadedly connected to a fastening nut. A horizontal plate is fixed below the adjustment plate on the support plate, and a first adjusting bolt is threadedly connected to the horizontal plate. The upper end of the first adjusting bolt contacts the adjustment plate.

[0010] Preferably, the upper end of the support plate is provided with a first plate, the first plate is provided with a second adjustment hole, the second fastening bolt slides laterally along the second adjustment hole, and the second fastening bolt passes through the second adjustment hole and is threadedly connected to the weighing sensor.

[0011] Preferably, a sensor pad is provided between the weighing sensor and the frame, and both ends of the sensor pad are provided with adjustment grooves. The third fastening bolt slides laterally along the adjustment groove and passes through the adjustment groove to be threadedly connected to the frame.

[0012] Preferably, an L-shaped plate is fixed on the scale frame, and a second flat plate is provided between the second roller group and the L-shaped plate, and the second flat plate is fixed to the L-shaped plate by bolts.

[0013] Preferably, a weight calibration device is connected to the support.

[0014] Preferably, the hanging weight calibration device includes a support plate set on a support plate, with a support plate fixed at both ends of the support plate, and a storage groove provided at the upper end of the support plate.

[0015] Preferably, the frame is provided with two bases, and an electric push rod is installed on the base. The upper end of the piston rod of the electric push rod is fixed with a lifting plate, and a standard weight bar is placed on the lifting plate. The standard weight bar is located above the storage slot.

[0016] Compared with existing technologies, in this invention, the second idler roller group, the scale frame, and the support shaft form a floating weighing frame. The two load cells, after being fixed to the supports, are movably connected to the floating weighing frame, avoiding internal forces generated in the load cells during installation and ensuring the weighing accuracy of the belt scale. Secondly, the adjustable plates that can move up and down facilitate adjusting the height of both sides of the second idler roller group, thereby eliminating errors that may occur during installation. The overall structure is simple and easy to promote. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a bottom view of the present invention;

[0020] Figure 3 This is a partial structural diagram of the present utility model.

[0021] Figure label:

[0022] 1. Frame, 2. First roller group, 3. Weighing frame, 31. Square frame, 32. U-shaped clamp, 33. L-shaped plate, 34. Second flat plate, 4. Support shaft, 5. Support, 51. Support plate, 52. Adjusting plate, 521. V-groove, 53. First fastening screw, 54. Horizontal plate, 55. First adjusting bolt, 56. Second fastening bolt, 57. Support plate, 58. Support plate, 511. First flat plate, 581. Storage groove, 6. Second roller group, 7. Weighing sensor, 8. Sensor pad, 81. Adjusting groove, 9. Base, 100. Electric push rod, 200. Lifting plate, 300. Standard weight bar, 400. Weight calibration device. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] See attached document Figure 1 This utility model provides a fully suspended floating weighing belt scale, including a frame 1, on which multiple first roller groups 2 are installed, wherein a scale frame 3 is provided between two first roller groups 2, as shown in the attached figure. Figure 2A support shaft 4 is fixed on the weighing frame 3. Both ends of the support shaft 4 are mounted on the frame 1 via supports 5. Second roller groups 6 are provided at both ends of the weighing frame 3. Alternatively, three or four sets of second roller groups 6 can be installed on the weighing frame 3. The belt is located above the first roller group 2 and the second roller group 6. A weighing sensor 7 is installed between the support plate 51 of the support 5 and the frame 1. An adjusting plate and a height adjusting assembly are provided on the support plate 51. The adjusting plate 52 moves up and down along the support plate 51 via the height adjusting assembly. The support shaft 4 rotates and moves up and down within the adjusting plate 52. The weighing frame 3 is movably connected to the support 5 via the support shaft 4. By adjusting the height of the adjusting plate 52, the height of the second roller group 6 is adjusted, allowing it to cooperate with the first roller group 2 to support the belt. This structural design facilitates the installation of the weighing frame 3 and the second roller group 6, ensuring accurate weighing by the belt scale. In this invention, the support 5 is fixed together with the load cell 7, essentially serving as part of the load cell 7. The two supports 5 are movably connected via the support shaft 4. Fixing the support 5 to the load cell 7 does not affect the connection between the other support 5 and the other load cell 7. Therefore, in this structure, the load cell 7 does not generate internal force (stress), which is beneficial for improving the weighing accuracy of the belt scale. Secondly, the height of both sides of the second idler roller group 6 is adjusted by the adjusting plate 52, thereby eliminating errors that occur during installation. The belt conveys material to the top of the scale frame 3, and the weight of the material is transferred to the scale frame 3 through the second idler roller group 6. The scale frame 3 rotates around the support shaft 4, and the weight of the material is transferred to the load cell 7 through the support shaft 4. The overall structure is simple, easy to install, and easy to modify.

[0025] One embodiment in which the support shaft 4 rotates and moves up and down within the adjusting plate 52: Refer to the attached document. Figure 3 The adjusting plate 52 is provided with a V-groove 521, and the support shaft 4 is located in the V-groove 521. The end of the support shaft 4 is in contact with the support plate 51. The support shaft 4 can rotate freely in the V-groove 521, and is then constrained by the support plate 51. This structure restricts the axial movement of the support shaft 4.

[0026] Another embodiment of the support shaft 4 rotating and moving up and down within the adjusting plate 52: the support shaft 4 is mounted on the adjusting plate 52 via a spherical bearing.

[0027] A third embodiment of the support shaft 4 rotating and moving up and down within the adjusting plate 52: the adjusting plate 52 is provided with a U-shaped groove.

[0028] One embodiment of fixing the support shaft 4 to the scale frame 3: A square frame 31 is fixed on the scale frame 3, and the support shaft 4 is fixed in the square frame 31 by bearings. The scale frame 3 rotates around the support shaft 4 by bearings. Through this structural design, the scale frame 3 can swing up and down more flexibly on the support shaft 4. The square frame 31 is installed on the scale frame 3 by insertion, and the two support shafts 4 are respectively located at both ends of the square frame 31.

[0029] One method for fixing the frame 31 is as follows: the frame 31 is connected to the scale frame 3 via a U-shaped clamp 32, and the U-shaped clamp 32 is fixed to the scale frame 3 via bolts. This structural design facilitates the assembly and disassembly of the frame 31, and also provides good fixation.

[0030] One embodiment of the vertical movement of the adjusting plate 52: A first adjusting hole, which is oblong in shape, is provided on the support plate 51. A first fastening screw 53 slides up and down along the first adjusting hole. After passing through the adjusting plate 52 and the first adjusting hole, the first fastening screw 53 is threadedly connected to a fastening nut. A horizontal plate 54 is fixed below the adjusting plate 52 on the support plate 51. A first adjusting bolt 55 is threadedly connected to the horizontal plate 54, and the upper end of the first adjusting bolt 55 contacts the adjusting plate 52. Loosening the fastening nut and rotating the first adjusting bolt 55 causes the adjusting plate 52 to move up and down through support. When the second idler roller group 6 is raised or lowered to a suitable position, the fastening nut is tightened to prevent the adjusting plate 52 from moving along the width direction of the frame 1. This structural design facilitates the improvement of the weighing accuracy of the belt scale.

[0031] In another embodiment of this utility model: the upper end of the support plate 51 is provided with a first flat plate 511, and the first flat plate 511 is provided with a second adjusting hole. The second adjusting hole is an oblong hole, and the second fastening bolt 56 slides laterally along the second adjusting hole. The second fastening bolt 56 passes through the second adjusting hole and is threadedly connected to the load cell 7. Loosening the second fastening bolt 56 allows the support plate 51 to move along the width direction of the frame 1. After the second idler roller group 6 moves to a suitable position, the second fastening bolt 56 is tightened, and the support plate 51 is fixed together with the load cell 7. This structural design facilitates the improvement of the weighing accuracy of the belt scale.

[0032] In another embodiment of this utility model: a sensor pad 8 is provided between the weighing sensor 7 and the frame 1. Both ends of the sensor pad 8 are provided with adjustment grooves 81. A third fastening bolt slides laterally along the adjustment grooves 81 and passes through the adjustment grooves 81 to be threadedly connected to the frame 1. Loosening the third fastening bolt allows the sensor pad 8 to move along the length of the frame 1. After the second roller group 6 becomes parallel to the width of the frame 1, the third fastening bolt is tightened, fixing the sensor pad 8 to the frame 1. This structural design facilitates improved weighing accuracy of the belt scale.

[0033] In one embodiment where the second idler roller group 6 is fixed to the weighing frame 3: an L-shaped plate 33 is fixed on the weighing frame 3, and a second flat plate 34 is provided between the second idler roller group 6 and the L-shaped plate 33. The second flat plate 34 is fixed to the L-shaped plate 33 by bolts, and the L-shaped plate 33 is located on the outside of the weighing frame 3. This structural design facilitates the assembly and disassembly of the second idler roller group 6.

[0034] In another embodiment of this utility model, a weight calibration device 400 is connected to the support 9. By setting the weight calibration device 400, it is convenient to calibrate the weighing sensor 7.

[0035] One embodiment of the weight-hanging calibration device 400: A support plate 57 is fixed on a support plate 51, and a tray 58 is fixed to both ends of the support plate 57. A storage slot 581 is provided at the upper end of the tray 58. When the load cell 7 needs to be calibrated, a standard weight rod 300 is placed in the storage slot 581, and the weight of the standard weight rod 300 is transmitted to the load cell 7 through the support shaft 4. After calibration, the standard weight rod 300 is removed from the tray 58.

[0036] In another embodiment of this utility model: The frame 1 is provided with two bases 9, and an electric push rod 100 is mounted on each base 9. A lifting plate 200 is fixed to the upper end of the piston rod of the electric push rod 100, and a standard weight rod 300 is placed on the lifting plate 200, positioned above the storage slot 581. In this utility model, when the piston rod of the electric push rod 100 extends upward, it lifts the standard weight rod 300, which leaves the storage slot 581, and the belt scale performs normal measurement. When the piston rod of the electric push rod 100 retracts, the standard weight rod 300 returns to the storage slot 581, and the weighing sensor 7 is calibrated via the standard weight rod 300. This structural design allows for calibration of the weighing sensor 7 without on-site inspection.

[0037] Specifically, 8 to 12 of these belt weighing frames can form an array of belt weighing sections, which greatly reduces the impact on accuracy caused by the certain rigidity of the belt.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fully suspended floating metering belt scale, characterized in that, The system includes a frame on which multiple first roller groups are mounted. A weighing frame is located between two first roller groups. A support shaft is fixed on the weighing frame. Both ends of the support shaft are mounted on the frame via supports. Second roller groups are located at both ends of the weighing frame. A weighing sensor is located between the support plate of the support and the frame. An adjustment plate and a height adjustment assembly are provided on the support plate. The adjustment plate moves up and down along the support plate via the height adjustment assembly. The support shaft rotates and moves up and down within the adjustment plate.

2. The fully suspended floating metering belt scale according to claim 1, characterized in that, The adjusting plate is provided with a V-shaped groove, the support shaft is located in the V-shaped groove, and the end of the support shaft is in contact with the support plate.

3. The fully suspended floating metering belt scale according to claim 1, characterized in that, The support shaft is mounted on the adjusting plate via a spherical bearing.

4. The fully suspended floating metering belt scale according to claim 2, characterized in that, A square frame is fixed to the scale frame, and the support shaft is fixed inside the square frame by bearings.

5. The fully suspended floating metering belt scale according to claim 4, characterized in that, The frame is connected to the scale frame by a U-shaped clamp, and the U-shaped clamp is fixed to the scale frame by bolts.

6. The fully suspended floating metering belt scale according to claim 1, characterized in that, The support plate is provided with a first adjustment hole, and a first fastening screw slides up and down along the first adjustment hole. After passing through the adjustment plate and the first adjustment hole, the first fastening screw is threadedly connected to the fastening nut. A horizontal plate is fixed below the adjustment plate on the support plate, and a first adjusting bolt is threadedly connected to the horizontal plate. The upper end of the first adjusting bolt contacts the adjustment plate.

7. The fully suspended floating metering belt scale according to claim 6, characterized in that, The upper end of the support plate is provided with a first plate, and the first plate is provided with a second adjustment hole. The second fastening bolt slides laterally along the second adjustment hole and passes through the second adjustment hole to be threadedly connected to the weighing sensor.

8. The fully suspended floating metering belt scale according to claim 7, characterized in that, A sensor pad is provided between the weighing sensor and the frame. Both ends of the sensor pad are provided with adjustment grooves. The third fastening bolt slides laterally along the adjustment groove and passes through the adjustment groove to be threadedly connected to the frame.

9. The fully suspended floating metering belt scale according to claim 1, characterized in that, A weight calibration device is connected to the support.

10. The fully suspended floating metering belt scale according to claim 9, characterized in that, The weight calibration device includes a support plate mounted on a support plate, with trays fixed at both ends of the support plate and a storage groove at the upper end of the tray.

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