Separated weighing bridge of high-precision electronic belt scale

Abstract

The utility model discloses a high-precision electronic belt scale separation type weighing bridge, which relates to the technical field of electronic belt scales, has the advantage of reducing internal stress among a plurality of sensors, and is characterized by comprising a scale frame and two independent carrier roller brackets, each carrier roller bracket is independently supported by a weighing module, and the weighing module is arranged on the scale frame. The weighing module is fixed on the weighing frame, the two independent carrier roller supports are symmetrically distributed along the center line of the weighing frame, and a gap exists between the two independent carrier roller supports.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic belt scales, in particular to a high-precision electronic belt scale separated weighing bridge. Background Art

[0002] An electronic belt scale is an automatic weighing device that continuously weighs bulk materials on a conveyor belt without having to subdivide the mass or interrupt the movement of the conveyor belt.

[0003] In order to ensure the stability of the weighing bridge of the electronic belt scale, multiple sensors are generally used to support the weighing bridge. However, when multiple sensors are connected, since the weighing bridge is a whole, internal stress is generated after the sensors are tightened, which affects the stability and sensitivity of force transmission. For example, Figure 4 As shown, since the two sensors support the same set of weighing rollers (which can be understood as a weighing bridge), it is equivalent to one roller support being supported by two sensors. This structure causes internal stress to appear between the two sensors after the bolts are tightened due to factors such as different tightening forces of the tightening bolts, deformation of the roller support, and vibration. This affects the stability and sensitivity of force transmission. Therefore, the applicant has developed a new technical solution in actual production to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a high-precision electronic belt scale separated weighing bridge, which has the advantage of reducing the internal stress problem between multiple sensors.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The utility model provides a high-precision electronic belt scale separated weighing bridge, comprising a weighing frame and two independent roller supports, each of the roller supports being independently supported by a weighing module, the weighing module being fixed on the weighing frame, and the two independent roller supports being symmetrically distributed along the center line of the weighing frame, with a gap between them.

[0007] By adopting the above technical solution, two independent roller brackets are independently supported by the weighing module, and the original set of weighing bridges is transformed into two independent weighing bridges. Only after the purpose of one weighing bridge being supported by only one weighing module is achieved can the problem of force transmission be effectively changed. The above structure can effectively eliminate internal stress, and at the same time improve the anti-eccentric load capacity of the weighing bridge and reduce the internal stress between multiple weighing modules. At this time, the weighing module is a new type of sensor application structure, which not only ensures the high precision and good long-term stability of the shear beam sensor, but also solves the problem of weighing error caused by improper installation.

[0008] Preferably, each weighing module includes a weighing sensor with one horizontal end fixed to the weighing frame by bolts, and the other end is fixedly connected to an upper connecting plate, and a horizontal plate is fixedly provided on the upper connecting plate, and the horizontal plate is located below the roller bracket.

[0009] Preferably, each of the roller brackets includes a triangular bracket placed above the transverse plate, the longitudinal section of the triangular bracket is a triangle, each of the transverse plates is provided with a lower mounting plate located below the triangular bracket, the triangular bracket is placed on the lower mounting plate and an upper mounting plate is placed on the triangular bracket to press the triangular bracket onto the lower mounting plate, triangular brackets are extended from both ends of the lower mounting plate and the upper mounting plate and are connected by fastening bolts at both ends of the extension, after the triangular brackets are pressed onto the transverse plate, there is a gap between the ends of the two triangular brackets that are away from each other and the upper end face of the weighing frame.

[0010] Preferably, the number of the lower mounting plates on each of the transverse plates is set to two and the lower mounting plates are fixed to the transverse plates by connecting bolts, and the length direction of the lower mounting plates is perpendicular to the length direction of the triangular bracket;

[0011] The upper mounting plate is provided with angles that fit the outer wall of the triangular bracket.

[0012] Preferably, the roller bracket also includes an oblique roller and a horizontal roller arranged at the upper end of the triangular bracket, and the upper end surface of the triangular bracket is provided with support plates at both ends of the oblique roller and the horizontal roller, and both ends of the oblique roller and the horizontal roller are rotatably connected to the support plates, and the horizontal rollers and oblique rollers on the two triangular brackets are symmetrically distributed along the vertical center line of the weighing frame, and there is a gap between the two horizontal rollers.

[0013] Preferably, of the two lower mounting plates located on the same transverse plate, one is located directly below the inclined roller, and the other is located directly below the horizontal roller.

[0014] Preferably, the lower end of each weighing module is fixed to the weighing frame by bolts, and a horizontal plate is fixed to the upper end. The horizontal plate is located below the roller bracket. Each roller bracket includes two horizontally distributed transmission rollers rotatably connected to the upper ends of the two horizontal plates. There is a gap between the two horizontal plates. The axes of the two transmission rollers located on the same horizontal plate are parallel to each other and distributed at both ends of the diagonal of the horizontal plate. The transmission rollers at one corner point of the two horizontal plates are distributed close to each other, and the transmission rollers at the other corner point are distributed away from each other.

[0015] Preferably, both horizontal plates are provided with vertical plates located at both ends of the transmission roller, both vertical plates are rotatably connected to both ends of the transmission roller, and the weighing module is located below the center of the horizontal plate.

[0016] Preferably, the two support plates located on the horizontal roller and the inclined roller and close to each other are connected by an arc plate, so that the surface of the support plate connected to the inclined roller for rotation is perpendicular to the axis of the inclined roller, and the support plate located on the horizontal roller is vertically distributed.

[0017] Preferably, the weighing frame includes two U-shaped steels distributed on the left and right and an L-shaped connecting steel plate detachably connected to the upper end surface of the U-shaped steel by bolts. The two connecting steel plates are connected by a hollow steel plate, and the two weighing modules are symmetrically arranged on the hollow steel plate along the center line of the hollow template.

[0018] The beneficial effects of the present invention are as follows: two independent roller supports are independently supported by the weighing module, and the original set of weighing bridges is transformed into two independent weighing bridges, so that the problem of force transmission can be effectively changed after the purpose of one weighing bridge being supported by only one weighing module is achieved. The above structure can effectively eliminate internal stress, and at the same time improve the anti-eccentric load capacity of the weighing bridge, and reduce the internal stress between multiple weighing modules. At this time, the weighing module is a new type of sensor application structure, which not only ensures the high precision and good long-term stability of the shear beam sensor, but also solves the problem of weighing error caused by improper installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of Example 1;

[0021] Figure 2 This is a schematic structural diagram of a tripod support according to Example 1;

[0022] Figure 3 This is a schematic structural diagram of Example 2;

[0023] Figure 4 It is a structural diagram of the prior art.

[0024] Description of reference numerals:

[0025] In the figure: 1. Weighing frame; 11. Roller bracket; 12. Weighing module; 121. Weighing sensor; 122. Upper connecting plate; 123. Horizontal plate; 13. Triangular bracket; 131. Lower mounting plate; 132. Upper mounting plate; 14. Inclined roller; 141. Horizontal roller; 142. Support plate; 15. Horizontal plate; 151. Transport roller; 152. Vertical plate; 16. Arc plate; 17. U-shaped steel; 171. Connecting steel plate; 172. Hollow steel plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1: A high-precision electronic belt scale with a separate weighing bridge, such as Figure 1 and Figure 2 The system comprises a weighing frame 1 and two independent roller supports 11. Each roller support 11 is independently supported by a weighing module 12. The weighing module 12 is fixed to the weighing frame 1. The two independent roller supports 11 are symmetrically arranged along the centerline of the weighing frame 1, with a gap between them. This structure is used to resolve the internal stress problem between multiple sensors, namely the two weighing modules 12.

[0028] like Figure 1 and Figure 2 , two independent roller brackets 11 are independently supported by the weighing module 12, and the original set of weighing bridges is turned into two independent weighing bridges, so that one weighing bridge can only be supported by one weighing module 12, and the force transmission problem can be effectively changed. The above structure can effectively eliminate the internal stress, and at the same time improve the anti-eccentric load capacity of the weighing bridge, and reduce the internal stress between multiple weighing modules 12; at this time, the weighing module 12 is a new type of sensor application structure, which not only ensures the high precision and good long-term stability of the shear beam sensor, but also solves the problem of weighing error caused by improper installation.

[0029] like Figure 1 and Figure 2 In addition, the structure of the weighing modules 12 can also be as follows: each weighing module 12 includes a weighing sensor 121 with one horizontal end fixed to the weighing frame 1 by bolts, and the other end is fixedly connected to an upper connecting plate 122. A cross plate 123 is fixed to the upper connecting plate 122, and the cross plate 123 is located below the roller bracket 11. In this case, the two weighing modules 12 and the cross plate 123 are also symmetrically distributed along the center line of the weighing frame 1.

[0030] like Figure 1 and Figure 2 Each roller bracket 11 includes a triangular bracket 13 placed above the horizontal plate 123. The longitudinal section of the triangular bracket 13 is triangular and the lower end is open, so the triangular bracket 13 can also be called an inverted V-shaped bracket. Each horizontal plate 123 is provided with a lower mounting plate 131 located below the triangular bracket 13. The triangular bracket 13 is placed on the lower mounting plate 131 and an upper mounting plate 132 is placed on the triangular bracket 13 to press the triangular bracket 13 on the lower mounting plate 131. The triangular bracket 13 is extended from both ends of the lower mounting plate 131 and the upper mounting plate 132 and is connected at both ends by fastening bolts. After the triangular bracket 13 is pressed on the horizontal plate 123, there is a gap between the ends of the two triangular brackets 13 that are away from each other and the upper end face of the weighing frame 1.

[0031] like Figure 1 and Figure 2 The roller support 11 also includes an inclined roller 14 and a horizontal roller 141 mounted on the upper end of each triangular support 13. Support plates 142 are provided at both ends of the inclined roller 14 and the horizontal roller 141 on the upper end surface of the triangular support 13. Both ends of the inclined roller 14 and the horizontal roller 141 are rotatably connected to the support plates 142. The horizontal rollers 141 and the inclined rollers 141 on the two triangular supports 13 are symmetrically distributed along the vertical centerline of the weighing frame 1, with a gap between the two horizontal rollers 141. This system is suitable for the installation and transmission of grooved belts.

[0032] like Figure 1 and Figure 2 The number of lower mounting plates 131 on each horizontal plate 123 is set to two and the lower mounting plates 131 are fixed to the horizontal plate 123 by connecting bolts. The length direction of the lower mounting plates 131 is perpendicular to the length direction of the triangular bracket 13; in order to better press the triangular bracket 13 on the lower mounting plates 131, the upper mounting plates 132 have angles that fit the outer wall of the triangular bracket 13.

[0033] like Figure 1 and Figure 2 , two lower mounting plates 131 are located on the same transverse plate 123 , one is located directly below the inclined roller 14 , and the other is located directly below the horizontal roller 141 .

[0034] like Figure 1 and Figure 2Installation steps: First, install the two weighing modules 12 on the weighing frame 1, then install the horizontal plate 123 above the two weighing modules 12, install two lower mounting plates 131 on the upper end surface of the horizontal plate 123, place the two triangular brackets 13 on their respective lower mounting plates 131, then install the upper mounting plate 132, place the upper mounting plate 132 corresponding to the lower mounting plate 131, and fix the ends of the upper mounting plate 132 and the lower mounting plate 131 with fastening bolts to fix the position of the triangular bracket 13;

[0035] A support plate 142 is welded to the triangular bracket 13 to facilitate the installation of the inclined roller 14 and the horizontal roller 141.

[0036] The two support plates 142 located close to each other on the horizontal roller 141 and the inclined roller 14 are connected by an arc plate 16, so that the surface of the support plate 142 rotatably connected to the inclined roller 14 is distributed perpendicular to the axis of the inclined roller 14, and the support plate 142 located on the horizontal roller 141 is distributed vertically, which increases the overall stability of the roller bracket 11.

[0037] Through trial production and multiple tests of the product, we obtained multiple sets of data, which are compared with the traditional weighing bridge structure as follows:

[0038]

[0039] Example 2: A high-precision electronic belt scale with a separate weighing bridge, such as Figure 3 The difference from Example 1 is that the lower end of each weighing module 12 is fixed to the weighing frame 1 by bolts, and the upper end is fixed with a horizontal plate 15. The horizontal plate 15 is located below the roller bracket 11. Each roller bracket 11 includes two horizontally distributed transmission rollers 151 rotatably connected to the upper ends of the two horizontal plates 15. There is a gap between the two horizontal plates 15. The axes of the two transmission rollers 151 located on the same horizontal plate 15 are parallel to each other and distributed at both ends of the diagonal of the horizontal plate 15. The transmission rollers 151 at one corner point of the two horizontal plates 15 are close to each other, and the transmission rollers 151 at the other corner point are far away from each other. It is suitable for the installation and transmission of flat belts. The weighing module 12 is an existing structure and will not be described in detail here.

[0040] like Figure 3 Both horizontal plates 15 are provided with vertical plates 152 located at both ends of the transmission roller 151. Both vertical plates 152 are rotatably connected to both ends of the transmission roller 151. The weighing module 12 is located below the center of the horizontal plate 15.

[0041] like Figure 3, the weighing frame 1 includes two U-shaped steels 17 distributed left and right, and L-shaped connecting steel plates 171 detachably connected to the upper end surfaces of the U-shaped steels 17 by bolts. The two connecting steel plates 171 are connected by a hollow steel plate 172. The two weighing modules 12 are symmetrically arranged on the hollow steel plate 172 along the center line of the hollow template.

[0042] As Figure 3 , the above-mentioned idler bracket 11 is used when the conveyor belt width is too large and improves the anti-offload capacity.

[0043] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A high-precision electronic belt scale separated weighing bridge, characterized in that: The invention comprises a weighing frame (1) and two independent roller supports (11), each of the roller supports (11) is independently supported by a weighing module (12), the weighing module (12) is fixed on the weighing frame (1), and the two independent roller supports (11) are symmetrically distributed along the center line of the weighing frame (1), with a gap between them.

2. The high-precision electronic belt scale separated weighing bridge according to claim 1, characterized in that: Each weighing module (12) includes a weighing sensor (121) having one horizontal end fixed to the weighing frame (1) by bolts, and the other end fixedly connected to an upper connecting plate (122), a transverse plate (123) fixedly provided on the upper connecting plate (122), and the transverse plate (123) is located below the roller bracket (11).

3. The high-precision electronic belt scale separated weighing bridge according to claim 2, characterized in that: Each of the roller supports (11) includes a triangular support (13) placed above the transverse plate (123), the longitudinal section of the triangular support (13) is triangular, and each of the transverse plates (123) is provided with a lower mounting plate (131) located below the triangular support (13), the triangular support (13) is placed on the lower mounting plate (131), and an upper mounting plate (132) is placed on the triangular support (13) for pressing the triangular support (13) onto the lower mounting plate (131), both ends of the lower mounting plate (131) and the upper mounting plate (132) extend from the triangular support (13) and are connected by fastening bolts at the extended ends, and after the triangular support (13) is pressed onto the transverse plate (123), the ends of the two triangular supports (13) that are away from each other have a gap with the upper end surface of the weighing frame (1).

4. The high-precision electronic belt scale separated weighing bridge according to claim 3, characterized in that: The number of the lower mounting plates (131) on each transverse plate (123) is set to two, and the lower mounting plates (131) are fixed to the transverse plate (123) by connecting bolts, and the length direction of the lower mounting plates (131) is perpendicular to the length direction of the triangular bracket (13); The upper mounting plate (132) has an angled shape that fits the outer wall of the triangular bracket (13).

5. The high-precision electronic belt scale separated weighing bridge according to claim 4, characterized in that: The roller support (11) further includes an inclined roller (14) and a horizontal roller (141) arranged at the upper end of the triangular support (13); the upper end surface of the triangular support (13) is provided with a support plate (142) at both ends of the inclined roller (14) and the horizontal roller (141); both ends of the inclined roller (14) and the horizontal roller (141) are rotatably connected to the support plate (142); the horizontal rollers (141) and the inclined rollers (14) on the two triangular supports (13) are symmetrically distributed along the vertical center line of the weighing frame (1), and a gap exists between the two horizontal rollers (141).

6. The high-precision electronic belt scale separated weighing bridge according to claim 5, characterized in that: Two lower mounting plates (131) are located on the same transverse plate (123), one of which is located directly below the inclined roller (14) and the other of which is located directly below the horizontal roller (141).

7. The high-precision electronic belt scale separated weighing bridge according to claim 1, characterized in that: The lower ends of each of the weighing modules (12) are fixedly mounted on the weighing frame (1) by bolts, and the upper ends are fixedly provided with horizontal plates (15). The horizontal plates (15) are located below the roller brackets (11). Each of the roller brackets (11) includes two transfer rollers (151) with horizontally distributed axes rotatably connected to the upper ends of two horizontal plates (15). There is a gap between the two horizontal plates (15). The axes of the two transfer rollers (151) on the same horizontal plate (15) are parallel to each other and are located at both ends of the diagonal line of the horizontal plate (15). The transfer rollers (151) at one corner point of the two horizontal plates (15) are distributed close to each other, and the transfer rollers (151) at the other corner point are distributed far from each other.

8. The high-precision electronic belt scale separated weighing bridge according to claim 7, characterized in that: Vertical plates (152) are provided at both ends of the transfer rollers (151) on the two horizontal plates (15). The two vertical plates (152) are rotatably connected to both ends of the transfer rollers (151). The weighing module (12) is located below the center of the horizontal plate (15).

9. The high-precision electronic belt scale separated weighing bridge according to claim 5, characterized in that: An arc-shaped plate (16) is connected between two support plates (142) that are close to each other on the horizontal roller (141) and the inclined roller (14), so that the plate surface of the support plate (142) rotatably connected to the inclined roller (14) is perpendicular to the axis of the inclined roller (14), and the support plate (142) on the horizontal roller (141) is vertically distributed.

10. The high-precision electronic belt scale separated weighing bridge according to claim 7, characterized in that: The weighing frame (1) includes two U-shaped steels (17) distributed left and right and an L-shaped connecting steel plate (171) detachably connected to the upper end surfaces of the U-shaped steels (17) by bolts. The two connecting steel plates (171) are connected by a hollow steel plate (172). The two weighing modules (12) are symmetrically arranged on the hollow steel plate (172) along the center line of the hollow template.

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