Dynamic scale

Abstract

The utility model relates to the technical field of article weighing, in particular to a dynamic scale. The dynamic scale comprises a base, four weighing assemblies and a weighing platform which are sequentially arranged from bottom to top, the four weighing assemblies are arranged at the four top corners of the weighing platform respectively, each weighing assembly comprises a weighing sensor and a bearing body, the weighing sensor is installed on the base, the lower end of the bearing body is connected with the weighing sensor, and the bearing body is connected with the base. The dynamic scale further comprises two limiting assemblies, and the two limiting assemblies are arranged in one-to-one correspondence with the bearing bodies of any pair of two diagonal weighing assemblies in the four weighing assemblies. The first limiting parts of the two limiting assemblies are located on the two sides of the weighing table in the length direction so as to prevent the weighing table from moving in the length direction of the weighing table, and the second limiting parts of the two limiting assemblies are located on the two sides of the weighing table in the width direction so as to prevent the weighing table from moving in the width direction of the weighing table and prevent the weighing table from shaking. And the weighing precision of the dynamic scale is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of article weighing, in particular to a dynamic scale. Background Art

[0002] Dynamic scales are used to measure the weight of items during the transportation process. Existing dynamic scales include a base, a weighing platform, a weighing sensor and a carrier. The weighing platform is arranged above the base, the weighing sensor is installed on the base, the upper end of the carrier is connected to the weighing platform, and the lower end of the carrier is connected to the weighing sensor. The weighing platform is provided with a conveying assembly. When the item to be measured moves horizontally to the weighing platform and continues to move under the drive of the conveying assembly, the pressure of the item on the weighing platform is transmitted to the weighing sensor through the carrier, so that the weighing sensor outputs a corresponding detection signal to obtain the weight of the item. Dynamic scales are usually used in parcel sorting systems. The parcel sorting system also includes a package supply mechanism, which is used to transport items to the dynamic scale. In the prior art, when the item is transported to the weighing platform by the package supply mechanism, it will produce an impact on the weighing platform, and this impact will cause the weighing platform to shake, affecting the weighing accuracy. Utility Model Content

[0003] The utility model aims to provide a dynamic scale to prevent a weighing platform from shaking and ensure the weighing accuracy of the dynamic scale.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A dynamic scale comprises a base, four weighing components and a weighing platform arranged in sequence from bottom to top, the weighing platform is rectangular, the four weighing components are respectively arranged at the four vertex corners of the weighing platform, each weighing component comprises a weighing sensor and a bearing body, the weighing sensor is installed on the base, the lower end of the bearing body is connected to the weighing sensor, the upper end of the bearing body supports the weighing platform, the dynamic scale also comprises two limit assemblies, the two limit assemblies are arranged one-to-one with the bearing bodies of any pair of diagonal weighing components among the four weighing components Each of the limit assemblies includes a support frame and a first limit member and a second limit member connected to the support frame, the support frame is fixedly connected to the base, the first limit members of the two limit assemblies are respectively located on both sides of the length direction of the weighing platform, and are respectively opposite to the corresponding carriers, for preventing the weighing platform from moving along the length direction of the weighing platform, the second limit members of the two limit assemblies are respectively located on both sides of the width direction of the weighing platform, and are respectively opposite to the corresponding carriers, for preventing the weighing platform from moving along the width direction of the weighing platform.

[0006] As an optional scheme, the carrier includes a first vertical plane and a second vertical plane that are perpendicular to each other; the first limit member and the second limit member are both rotatably connected to the support frame, the rotation axis of the first limit member extends along the width direction of the weighing platform, and the first limit member is relatively spaced a first set distance from the first vertical plane, the first limit member can abut against the first vertical plane to prevent the weighing platform from moving along the length direction of the weighing platform, the rotation axis of the second limit member extends along the length direction of the weighing platform, the second limit member is relatively spaced a second set distance from the second vertical plane, and the second limit member can abut against the second vertical plane to prevent the weighing platform from moving along the width direction of the weighing platform.

[0007] As an optional scheme, the support frame includes a first plate, a second plate, a first support block, a second support block, a first support shaft and a second support shaft, the first plate and / or the second plate are fixedly connected to the base, the first plate is vertically connected to the second plate, the first support block is fixedly connected to the first plate, the second support block is fixedly connected to the second plate, the first support shaft is supported by the first support, the first limiting member is mounted on the first support shaft and can rotate around the axis of the first support shaft, the second support shaft is supported by the second support block, and the second limiting member is mounted on the second support shaft and can rotate around the axis of the second support shaft.

[0008] As an optional scheme, the limiting assembly also includes a first nut, the first support block includes two first support walls and a second support wall that are relatively spaced apart along the width direction of the weighing platform, the first limiting member is located between the first support wall and the second support wall, and the first support shaft is sequentially plugged into the first support wall, the first limiting member and the second support wall and then threadedly connected to the first nut; and / or, the limiting assembly also includes a second nut, the second support block includes two third support walls and a fourth support wall that are relatively spaced apart along the length direction of the weighing platform, the second limiting member is located between the third support wall and the fourth support wall, and the second support shaft is sequentially plugged into the third support wall, the second limiting member and the fourth support wall and then threadedly connected to the second nut.

[0009] As an optional scheme, the limiting assembly also includes a first nut, the first support block includes two first support walls and a second support wall that are relatively spaced apart along the width direction of the weighing platform, the first limiting piece is located between the first support wall and the second support wall, the first support shaft is sequentially plugged into the first support wall, the first limiting piece and the second support wall and then threadedly connected to the first nut, the first support shaft includes a first shaft, a second shaft, a third shaft and a fourth shaft that are sequentially connected along their axial direction, and the outer diameters of the first shaft, the second shaft, the third shaft and the fourth shaft decrease sequentially, the fourth shaft is provided with a thread, the second shaft is plugged into the first support wall, the third shaft is plugged into the first limiting piece, and the fourth shaft is threadedly connected to the first nut after being plugged into the second support wall. and / or, the limiting assembly also includes a second nut, the second support block includes two third support walls and a fourth support wall that are relatively spaced apart along the length direction of the weighing platform, the second limiting member is located between the third support wall and the fourth support wall, the second support shaft is sequentially plugged into the third support wall, the second limiting member and the fourth support wall and then threadedly connected to the second nut, the second support shaft includes a fifth shaft, a sixth shaft, a seventh shaft and an eighth shaft that are sequentially connected along their axial direction, and the outer diameters of the fifth shaft, the sixth shaft, the seventh shaft and the eighth shaft decrease sequentially, the eighth shaft is provided with threads, the sixth shaft is plugged into the third support wall, the seventh shaft is plugged into the second limiting member, and the eighth shaft is threadedly connected to the second nut after being plugged into the fourth support wall.

[0010] As an optional solution, the support frame further includes a reinforcing plate connected between the first plate and the second plate.

[0011] As an optional scheme, the supporting body includes a first supporting part, a second supporting part and a sphere, the first supporting part is connected to the weighing platform, and the first supporting part is provided with a first spherical surface; the second supporting part is connected to the weighing sensor, and the second supporting part is provided with a second spherical surface opposite to the first spherical surface; the sphere is rollably located between the first spherical surface and the second spherical surface and simultaneously abuts against the first spherical surface and the second spherical surface, wherein the first vertical plane and the second vertical plane are both arranged on the first supporting part.

[0012] As an optional scheme, the first limit member and the second limit member are vertically connected, the first limit member and the second limit member are both plate-shaped, and the plate surface of the first limit member and the corresponding carrier are relatively spaced apart by a first set distance along the length direction of the weighing platform, and the plate surface of the second limit member and the corresponding carrier are relatively spaced apart by a second set distance along the width direction of the weighing platform.

[0013] As an optional scheme, the carrier includes a main body, a first compression spring, a first ball, a second compression spring and a second ball, the main body is provided with a first cavity and a second cavity, the first compression spring and the first ball are both located in the first cavity, and the first ball partially protrudes from the main body under the pressure of the first compression spring and is opposite to the first limit member along the length direction of the weighing platform; the second compression spring and the second ball are both located in the second cavity, and the second ball partially protrudes from the main body under the pressure of the second compression spring and is opposite to the second limit member along the width direction of the weighing platform.

[0014] As an optional solution, the first set distance is less than or equal to 1 mm; and / or the second set distance is less than or equal to 1 mm.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a dynamic scale. The dynamic scale is provided with two limit assemblies, and the two limit assemblies are respectively provided in one-to-one correspondence with the bearing bodies of two diagonally arranged weighing assemblies, so that the two limit assemblies clamp the weighing platform at the diagonal positions of a rectangular weighing platform, the first limit pieces of the two limit assemblies are located at both sides of the length direction of the weighing platform to prevent the weighing platform from moving along the length direction thereof, and the second limit pieces of the two limit pieces are located at both sides of the width direction of the weighing platform to prevent the weighing platform from moving along the width direction thereof. When articles are transported to the weighing platform by a package supply mechanism and an impact is generated on the weighing platform to cause the weighing platform to shake, the two limit assemblies prevent the weighing platform from moving along the length direction and the width direction of the weighing platform, thereby ensuring the weighing accuracy of the dynamic scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the dynamic scale provided by the first embodiment of the utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the local structure of the dynamic scale provided in the first embodiment of the utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the structure of the dynamic scale provided by the first embodiment of the utility model. Figure 2 ;

[0020] Figure 4 yes Figure 2 A magnified view of the structure at center A;

[0021] Figure 5 It is a structural schematic diagram of a limit assembly in a dynamic scale provided in Embodiment 1 of the utility model;

[0022] Figure 6It is a structural exploded view of the limit assembly in the dynamic scale provided in the first embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of the local structure of the dynamic scale provided in the first embodiment of the utility model. Figure 2 ;

[0024] Figure 8 It is a schematic diagram of the partial structure of the dynamic scale provided in the second embodiment of the utility model.

[0025] In the figure:

[0026] 1- Base;

[0027] 2-weighing assembly; 21-weighing sensor; 22-carrying body; 221-first bearing part; 201-first vertical plane; 202-second vertical plane; 203-first spherical surface; 222-second bearing part; 204-second spherical surface; 223-spherical body; 224-body; 205-first cavity; 206-second cavity; 225-first compression spring; 226-first ball; 227-second compression spring; 228-second ball;

[0028] 3-weighing platform; 31-weighing platform; 32-conveying assembly; 321-driving roller; 322-driven roller; 323-conveying belt; 324-motor;

[0029] 4-limiting assembly; 41-support frame; 411-first plate; 412-second plate; 413-first supporting block; 401-first supporting wall; 402-second supporting wall; 403-first through hole; 404-second through hole; 414-second supporting block; 405-third supporting wall; 406-fourth supporting wall; 415-first supporting shaft; 407-first shaft; 408-second shaft; 409-third shaft; 410-fourth shaft; 416-second supporting shaft; 417-reinforcement plate; 42-first limiting member; 43-second limiting member; 44-first nut; 45-second nut; 46-retaining ring. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] Embodiment 1

[0035] like Figure 1 to Figure 7As shown, the present embodiment provides a dynamic scale, which includes a base 1, four weighing components 2 and a weighing platform 3 arranged in sequence from bottom to top, the weighing platform 3 is rectangular, the four weighing components 2 are respectively arranged at the four vertex corners of the weighing platform 3, each weighing component 2 includes a weighing sensor 21 and a carrier 22, the weighing sensor 21 is installed on the base 1, the lower end of the carrier 22 is connected to the weighing sensor 21, and the upper end of the carrier 22 supports the weighing platform 3, the dynamic scale provided in the present embodiment also includes two limit assemblies 4, the two limit assemblies 4 are connected to the carriers 22 of any pair of two weighing components 2 diagonally opposite to each other among the four weighing components 2 Correspondingly, each limit assembly 4 includes a support frame 41 and a first limit piece 42 and a second limit piece 43 connected to the support frame 41. The support frame 41 is fixedly connected to the base 1. The first limit pieces 42 of the two limit assemblies 4 are respectively located on both sides of the length direction of the weighing platform 3 (ab direction in the figure), and are respectively opposite to the corresponding carrier 22, and are used to prevent the weighing platform 3 from moving along the length direction of the weighing platform 3. The second limit pieces 43 of the two limit assemblies 4 are respectively located on both sides of the width direction of the weighing platform 3 (cd direction in the figure), and are respectively opposite to the corresponding carrier 22, and are used to prevent the weighing platform 3 from moving along the width direction of the weighing platform 3.

[0036] The two limit assemblies 4 in the dynamic scale provided in the present embodiment are respectively arranged in one-to-one correspondence with the supporting bodies 22 of the two diagonally arranged weighing assemblies 2, so that the two limit assemblies 4 clamp the weighing platform 3 at the diagonal positions of the rectangular weighing platform 3, the first limit members 42 of the two limit assemblies 4 are located on both sides of the length direction of the weighing platform 3 to prevent the weighing platform 3 from moving along its length direction, and the second limit members 43 of the two limit assemblies 4 are located on both sides of the width direction of the weighing platform 3 to prevent the weighing platform 3 from moving along its width direction. When the items are transported to the weighing platform 3 by the package supply mechanism and the weighing platform 3 is impacted to cause the weighing platform 3 to shake, the two limit assemblies 4 prevent the weighing platform 3 from moving along the length and width directions of the weighing platform 3, thereby ensuring the weighing accuracy of the dynamic scale.

[0037] Optionally, in this embodiment, if Figure 1 As shown, the weighing platform 3 includes a weighing platform 31 and a conveying assembly 32 arranged on the weighing platform 31. The weighing platform 31 is rectangular, and the carrier 22 supports the weighing platform 31. The conveying assembly 32 includes an active roller 321, a driven roller 322, a conveyor belt 323 and a motor 324. The motor 324 is installed on the weighing platform 31. The active roller 321 and the driven roller 322 are arranged on the weighing platform 31 at intervals along the length direction of the weighing platform 3, and both extend along the width direction of the weighing platform 3. The conveyor belt 323 is sleeved on the active roller 321 and the driven roller 322. The active roller 321 is transmission-connected to the motor 324. When the motor 324 drives the active roller 321 to rotate, the active roller 321 drives the conveyor belt 323 to move to transport items.

[0038] In this embodiment, if Figure 2 and Figure 4 As shown, the carrier 22 includes a first vertical plane 201 and a second vertical plane 202 that are perpendicular to each other, the first limit member 42 and the second limit member 43 are both rotatably connected to the support frame 41, the rotation axis of the first limit member 42 extends along the width direction of the weighing platform 3, and the first limit member 42 is relatively spaced apart from the first vertical plane 201 by a first set distance, the first limit member 42 can abut against the first vertical plane 201 to prevent the weighing platform 3 from moving along the length direction of the weighing platform 3, the rotation axis of the second limit member 43 extends along the length direction of the weighing platform 3, the second limit member 43 is relatively spaced apart from the second vertical plane 202 by a second set distance, the second limit member 43 can abut against the second vertical plane 202 to prevent the weighing platform 3 from moving along the width direction of the weighing platform 3. In this embodiment, when the weighing platform 3 is impacted and shakes along its length direction, the first vertical plane 201 of the carrier 22 can contact the first limiter 42, and when the weighing platform 3 is impacted and shakes along its width direction, the second vertical plane 202 can contact the second limiter 43, and when the weighing platform 3 sinks to weigh, the first limiter 42 can roll relative to the first vertical plane 201, or the second limiter 43 can roll relative to the second vertical plane 202, and the resistance to the carrier 22 is small, further ensuring the weighing accuracy of the dynamic scale. Optionally, in this embodiment, the first limiter 42 can be a rolling bearing, and the second limiter 43 can also be a rolling bearing.

[0039] Optionally, in this embodiment, the first set distance is less than or equal to 1 mm, and the second set distance is less than or equal to 1 mm. The above numerical limits ensure that the shaking amount of the weighing platform 3 does not exceed 1 mm, which effectively ensures the stability of the weighing platform 3 and the weighing accuracy of the dynamic scale.

[0040] Optionally, in this embodiment, if Figure 5 and Figure 6As shown, the support frame 41 includes a first plate 411, a second plate 412, a first support block 413, a second support block 414, a first support shaft 415 and a second support shaft 416, wherein the second plate 412 is fixedly connected to the base 1, the first plate 411 is vertically connected to the second plate 412, the first support block 413 is fixedly connected to the first plate 411, the second support block 414 is fixedly connected to the second plate 412, the first support shaft 415 is supported by the first support block 413, the first limit member 42 is sleeved on the first support shaft 415 and can rotate around the axis of the first support shaft 415, the second support shaft 416 is supported by the second support block 414, and the second limit member 43 is sleeved on the second support shaft 416 and can rotate around the axis of the second support shaft 416. The above setting can be that the first support shaft 415 is stationary, and the first stopper 42 rotates around the axis of the first support shaft 415; or, the first stopper 42 rotates with the first support shaft 415 relative to the first support block 413 around the axis of the first support shaft 415; or, the first stopper 42 and the first support shaft 415 rotate around the axis of the first support shaft 415 respectively, so that the rotation of the first stopper 42 is smoother. Similarly, the above setting can be that the second support shaft 416 is stationary, and the second stopper 43 rotates around the axis of the second support shaft 416; or, the second stopper 43 rotates with the second support shaft 416 relative to the second support block 414 around the axis of the second support shaft 416, or, the second stopper 43 and the second support shaft 416 rotate around the axis of the second support shaft 416 respectively, so that the rotation of the second stopper 43 is smoother, thereby making the resistance encountered by the weighing platform 3 sinking smaller. Optionally, in other embodiments, the first plate 411 can also be fixedly connected to the base 1. Optionally, in other embodiments, the first plate 411 and the second plate 412 may be fixedly connected to the base 1 to ensure the stability and reliability of the fixed connection between the support frame 41 and the base 1 .

[0041] Optionally, in this embodiment, the limiting assembly 4 further includes a first nut 44, the first support block 413 includes two first support walls 401 and a second support wall 402 that are relatively spaced apart along the width direction of the weighing platform 3, the first limiting member 42 is located between the first support wall 401 and the second support wall 402, and the first support shaft 415 is threadedly connected to the first nut 44 after being plugged into the first support wall 401, the first limiting member 42 and the second support wall 402 in sequence. In this embodiment, the first nut 44 is used to limit the position of the first support shaft 415 along its axial direction, so as to prevent the first support shaft 415 from being separated from the first support block 413, so that the position of the first support shaft 415 on the first support block 413 is more stable and reliable, and the structure is simple and easy to install. In addition, the structural design of the above-mentioned first support block 413 realizes the stable support of the first support shaft 415, and also realizes the limiting of the first limiting member 42 along its axial direction. It should be noted that the first support wall 401 is provided with a first through hole 403 , the second support wall 402 is provided with a second through hole 404 , and the first support shaft 415 passes through the first through hole 403 , the first stopper 42 and the second through hole 404 in sequence and is threadedly connected with the first nut 44 .

[0042] Optionally, in this embodiment, the limiting assembly 4 further includes a second nut 45, the second support block 414 includes two third support walls 405 and a fourth support wall 406 that are relatively spaced apart along the length direction of the weighing platform 3, the second limiting member 43 is located between the third support wall 405 and the fourth support wall 406, and the second support shaft 416 is threadedly connected to the second nut 45 after being plugged with the third support wall 405, the second limiting member 43, and the fourth support wall 406 in sequence. In this embodiment, the second support shaft 416 is limited in its axial position by the second nut 45 to prevent the second support shaft 416 from being separated from the second support block 414, so that the position of the second support shaft 416 on the second support block 414 is more stable and reliable, and the structure is simple and easy to install. In addition, the structural design of the second support block 414 achieves stable support for the second support shaft 416 and also achieves the limiting of the second limiting member 43 in the axial direction thereof. It should be noted that corresponding through holes are formed on the third supporting wall 405 and the fourth supporting wall 406 for the second supporting shaft 416 to pass through.

[0043] Optionally, in this embodiment, if Figure 6As shown, the first support shaft 415 includes a first shaft 407, a second shaft 408, a third shaft 409 and a fourth shaft 410 which are sequentially connected along the axial direction thereof, and the outer diameters of the first shaft 407, the second shaft 408, the third shaft 409 and the fourth shaft 410 are sequentially reduced, the fourth shaft 410 is provided with threads, the second shaft 408 is plugged into the first support wall 401, the third shaft 409 is plugged into the first stopper 42, and the fourth shaft 410 is plugged into the second support wall 402 and then threadedly connected with the first nut 44. The above arrangement enables the first shaft 407 and the first nut 44 to jointly limit the position of the first support shaft 415 along the axial direction thereof. Optionally, in this embodiment, the stopper assembly 4 further includes a retaining ring 46, which is sleeved on the third shaft 409, and the retaining ring 46 and the shaft shoulders of the second shaft 408 are respectively located at both ends of the first stopper 42. When the first stopper 42 rotates relative to the first support shaft 415, it only contacts the retaining ring 46 and the shaft shoulders of the second shaft 408, thereby reducing friction. Optionally, the first shaft 407 is provided with a milling plane for holding during installation.

[0044] Optionally, in this embodiment, the second support shaft 416 includes a fifth shaft, a sixth shaft, a seventh shaft and an eighth shaft connected in sequence along its axial direction, and the outer diameters of the fifth shaft, the sixth shaft, the seventh shaft and the eighth shaft are reduced in sequence, the eighth shaft is provided with threads, the sixth shaft is plugged with the third support wall 405, the seventh shaft is plugged with the second stopper 43, and the eighth shaft is threadedly connected with the second nut 45 after being plugged with the fourth support wall 406. The above arrangement enables the fifth shaft and the second nut 45 to jointly limit the position of the second support shaft 416 along its axial direction. Optionally, in this embodiment, a retaining ring 46 is also provided on the seventh shaft, and the retaining ring 46 on the seventh shaft and the shaft shoulder of the sixth shaft are respectively located at the two ends of the second stopper 43. When the second stopper 43 rotates relative to the second support shaft 416, it only contacts with the retaining ring 46 on the seventh shaft and the shaft shoulder of the sixth shaft, thereby reducing friction. Optionally, a milling plane is provided on the fifth shaft for holding during installation.

[0045] In this embodiment, if Figure 5 and Figure 6 As shown, the support frame 41 also includes a reinforcing plate 417, and the reinforcing plate 417 is connected between the first plate 411 and the second plate 412. By connecting the reinforcing plate 417 between the first plate 411 and the second plate 412, the strength of the support frame 41 is enhanced, and the deformation of the support frame 41 when impacted is avoided, thereby ensuring the limiting accuracy of the symmetrical weighing platform 3. Optionally, in this embodiment, the support frame 41 includes two reinforcing plates 417 arranged at intervals to further enhance the strength of the support frame 41. In other embodiments, the specific number of reinforcing plates 417 can be set according to requirements.

[0046] Optionally, in this embodiment, if Figure 7As shown, the supporting body 22 includes a first supporting part 221, a second supporting part 222 and a spherical body 223. The first supporting part 221 is connected to the weighing platform 31 of the weighing platform 3. The first supporting part 221 is provided with a first spherical surface 203. The second supporting part 222 is connected to the weighing sensor 21. The second supporting part 222 is provided with a second spherical surface 204 opposite to the first spherical surface 203. The spherical body 223 can be rolled between the first spherical surface 203 and the second spherical surface 204 and abut against the first spherical surface 203 and the second spherical surface 204 at the same time, wherein the first vertical plane 201 and the second vertical plane 202 are both arranged on the first supporting part 221. When the weighing platform 3 shakes, the limit assembly 4 contacts the first vertical plane 201 or the second vertical plane 202 arranged on the first bearing part 221, and only a small part of the impact on the first bearing part 221 can be transmitted to the weighing sensor 21 through the sphere 223 and the second bearing part 222, which has little impact on the weighing sensor 21, thereby ensuring the life of the weighing sensor 21 and the detection accuracy of the weighing sensor 21.

[0047] Embodiment 2

[0048] The dynamic scale provided in this embodiment is basically the same as that in the first embodiment. The difference between the dynamic scale provided in this embodiment and the first embodiment is that:

[0049] like Figure 8 As shown, in the present embodiment, the carrier 22 includes a main body 224, a first compression spring 225, a first ball 226, a second compression spring 227 and a second ball 228, wherein the main body 224 is connected to the weighing sensor 21, and the main body 224 supports the weighing platform 31, the main body 224 is provided with a first cavity 205 and a second cavity 206, the first compression spring 225 and the first ball 226 are both located in the first cavity 205, and the first ball 226 partially protrudes out of the main body 224 under the pressure of the first compression spring 225 and is opposite to the first limit member 42 along the length direction of the weighing platform 3; the second compression spring 227 and the second ball 228 are both located in the second cavity 206, and the second ball 228 partially protrudes out of the main body 224 under the pressure of the second compression spring 227 and is opposite to the second limit member 43 along the width direction of the weighing platform 3. The above arrangement enables the first ball 226 to elastically contact the first stopper 42 when the weighing platform 3 shakes along its length direction, and the first compression spring 225 to absorb the impact force; when the weighing platform 3 shakes along its width direction, the second ball 228 can elastically contact the second stopper 43, and the second compression spring 227 can absorb the impact force; and when the weighing platform 3 sinks, the first ball 226 can roll relative to the first stopper 42, or the second ball 228 can roll relative to the second stopper 43 to reduce resistance. It also reduces the impact of the stopper assembly 4 on the body 224, has little effect on the weighing sensor 21, ensures the life of the weighing sensor 21, and also ensures the detection accuracy of the weighing sensor 21.

[0050] Optionally, in this embodiment, if Figure 8 As shown, the first stopper 42 and the second stopper 43 are vertically connected, and the first stopper 42 and the second stopper 43 are both plate-shaped, and the plate surface of the first stopper 42 and the corresponding carrier 22 are relatively spaced apart by a first set distance along the length direction of the weighing platform 3, and the plate surface of the second stopper 43 and the corresponding carrier 22 are relatively spaced apart by a second set distance along the width direction of the weighing platform 3. In this embodiment, the first stopper 42 and the second stopper 43 in the stopper assembly 4 are both plate-shaped, so that the structure of the stopper assembly 4 is simple. It should be noted that in this embodiment, the first ball 226 can abut against the plate surface of the first stopper 42, and the second ball 228 can abut against the plate surface of the second stopper 43.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A dynamic scale, comprising a base (1), four weighing components (2) and a weighing platform (3) arranged in sequence from bottom to top, wherein the weighing platform (3) is rectangular, the four weighing components (2) are respectively arranged at four corners of the weighing platform (3), each weighing component (2) comprises a weighing sensor (21) and a carrier (22), the weighing sensor (21) is mounted on the base (1), the lower end of the carrier (22) is connected to the weighing sensor (21), and the upper end of the carrier (22) supports the weighing platform (3), characterized in that: The dynamic scale further comprises two limit assemblies (4), the two limit assemblies (4) being arranged in one-to-one correspondence with the carriers (22) of any pair of diagonally opposite weighing assemblies (2) among the four weighing assemblies (2), each of the limit assemblies (4) comprising a support frame (41) and a first limit member (42) and a second limit member (43) connected to the support frame (41), the support frame (41) being fixedly connected to the base (1), the two limit assemblies (4) The first limiting members (42) are respectively located on both sides of the length direction of the weighing platform (3) and are respectively opposite to the corresponding supporting bodies (22), and are used to prevent the weighing platform (3) from moving along the length direction of the weighing platform (3). The second limiting members (43) of the two limiting assemblies (4) are respectively located on both sides of the width direction of the weighing platform (3) and are respectively opposite to the corresponding supporting bodies (22), and are used to prevent the weighing platform (3) from moving along the width direction of the weighing platform (3).

2. The dynamic scale according to claim 1, characterized in that: The carrier (22) comprises a first vertical plane (201) and a second vertical plane (202) which are perpendicular to each other; the first limiting member (42) and the second limiting member (43) are both rotatably connected to the support frame (41); the rotation axis of the first limiting member (42) extends along the width direction of the weighing platform (3); the first limiting member (42) is relatively spaced a first set distance from the first vertical plane (201); the first limiting member (42) can abut against the first vertical plane (201) to prevent the weighing platform (3) from moving along the length direction of the weighing platform (3); the rotation axis of the second limiting member (43) extends along the length direction of the weighing platform (3); the second limiting member (43) is relatively spaced a second set distance from the second vertical plane (202); the second limiting member (43) can abut against the second vertical plane (202) to prevent the weighing platform (3) from moving along the width direction of the weighing platform (3).

3. The dynamic scale according to claim 2, characterized in that: The support frame (41) comprises a first plate (411), a second plate (412), a first support block (413), a second support block (414), a first support shaft (415) and a second support shaft (416); the first plate (411) and / or the second plate (412) are fixedly connected to the base (1); the first plate (411) and the second plate (412) are vertically connected; the first support block (413) is fixedly connected to the first plate (411); the second support block (414) is fixedly connected to the second plate (412); the first support shaft (415) is supported by the first support block (413); the first limiting member (42) is sleeved on the first support shaft (415) and can rotate around the axis of the first support shaft (415); the second support shaft (416) is supported by the second support block (414); the second limiting member (43) is sleeved on the second support shaft (416) and can rotate around the axis of the second support shaft (416).

4. The dynamic scale according to claim 3, characterized in that: The limiting assembly (4) also includes a first nut (44); the first support block (413) includes a first support wall (401) and a second support wall (402) which are arranged relatively spaced apart along the width direction of the weighing platform (3); the first limiting member (42) is located between the first supporting wall (401) and the second supporting wall (402); the first supporting shaft (415) is sequentially plugged into the first supporting wall (401), the first limiting member (42) and the second supporting wall (402) and then threadedly connected to the first nut (44); And / or, the limiting assembly (4) also includes a second nut (45), the second support block (414) includes a third support wall (405) and a fourth support wall (406) which are relatively spaced apart along the length direction of the weighing platform (3), the second limiting member (43) is located between the third support wall (405) and the fourth support wall (406), and the second support shaft (416) is sequentially plugged into the third support wall (405), the second limiting member (43) and the fourth support wall (406) and then threadedly connected to the second nut (45).

5. The dynamic scale according to claim 3, characterized in that: The limiting assembly (4) further comprises a first nut (44); the first support block (413) comprises a first support wall (401) and a second support wall (402) which are arranged relatively spaced apart along the width direction of the weighing platform (3); the first limiting member (42) is located between the first support wall (401) and the second support wall (402); the first support shaft (415) is sequentially plugged into the first support wall (401), the first limiting member (42) and the second support wall (402) and then threadedly connected to the first nut (44); the first support shaft (415) comprises a first support wall (401), a second support wall (402) and a second support wall (402); The first shaft (407), the second shaft (408), the third shaft (409) and the fourth shaft (410) are sequentially connected along the axial direction thereof, and the outer diameters of the first shaft (407), the second shaft (408), the third shaft (409) and the fourth shaft (410) are sequentially reduced, the fourth shaft (410) is provided with a thread, the second shaft (408) is plugged into the first supporting wall (401), the third shaft (409) is plugged into the first limiting member (42), and the fourth shaft (410) is plugged into the second supporting wall (402) and then threadedly connected to the first nut (44); And / or, the limiting assembly (4) further comprises a second nut (45), the second support block (414) comprises a third support wall (405) and a fourth support wall (406) which are arranged relatively spaced apart along the length direction of the weighing platform (3), the second limiting member (43) is located between the third support wall (405) and the fourth support wall (406), and the second support shaft (416) is connected to the third support wall (405), the second limiting member (43) and the fourth support wall (406) in sequence. After being plugged in, it is threadedly connected to the second nut (45); the second support shaft (416) includes a fifth shaft, a sixth shaft, a seventh shaft and an eighth shaft connected in sequence along its axial direction, and the outer diameters of the fifth shaft, the sixth shaft, the seventh shaft and the eighth shaft decrease in sequence; the eighth shaft is provided with a thread; the sixth shaft is plugged in to the third support wall (405); the seventh shaft is plugged in to the second limit member (43); and the eighth shaft is threadedly connected to the second nut (45) after being plugged in to the fourth support wall (406).

6. The dynamic scale according to claim 3, characterized in that: The support frame (41) further comprises a reinforcing plate (417), wherein the reinforcing plate (417) is connected between the first plate (411) and the second plate (412).

7. The dynamic scale according to claim 2, characterized in that: The bearing body (22) comprises a first bearing part (221), a second bearing part (222) and a spherical body (223); the first bearing part (221) is connected to the weighing platform (3), and the first bearing part (221) is provided with a first spherical surface (203); the second bearing part (222) is connected to the weighing sensor (21), and the second bearing part (222) is provided with a second spherical surface (204) opposite to the first spherical surface (203); the spherical body (223) is rollably located between the first spherical surface (203) and the second spherical surface (204) and is simultaneously in contact with the first spherical surface (203) and the second spherical surface (204), wherein the first vertical plane (201) and the second vertical plane (202) are both arranged on the first bearing part (221).

8. The dynamic scale according to claim 1, characterized in that: The first limiting member (42) and the second limiting member (43) are vertically connected, and the first limiting member (42) and the second limiting member (43) are both plate-shaped, and the plate surface of the first limiting member (42) and the corresponding supporting body (22) are relatively spaced apart by a first set distance along the length direction of the weighing platform (3), and the plate surface of the second limiting member (43) and the corresponding supporting body (22) are relatively spaced apart by a second set distance along the width direction of the weighing platform (3).

9. The dynamic scale according to claim 1, characterized in that: The carrier (22) comprises a main body (224), a first compression spring (225), a first ball (226), a second compression spring (227) and a second ball (228); the main body (224) is provided with a first cavity (205) and a second cavity (206); the first compression spring (225) and the first ball (226) are both located in the first cavity (205); and the first ball (226) partially protrudes out of the main body (224) under the pressure of the first compression spring (225) and is opposite to the first limiting member (42) along the length direction of the weighing platform (3); the second compression spring (227) and the second ball (228) are both located in the second cavity (206); and the second ball (228) partially protrudes out of the main body (224) under the pressure of the second compression spring (227) and is opposite to the second limiting member (43) along the width direction of the weighing platform (3).

10. The dynamic scale according to claim 2 or 8, characterized in that: The first set distance is less than or equal to 1 mm; and / or the second set distance is less than or equal to 1 mm.

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