Electronic balance weighing platform

Abstract

The utility model discloses an electronic balance weighing platform, which comprises a weighing disc, a conductive spring, a balancing weight, a bearing spring, a connecting shaft and a weighing platform core, the bottom end face of the weighing disc is provided with a circular balancing weight concentric with the weighing disc, the center of the balancing weight is provided with an axially arranged threaded hole, the conductive spring is arranged in the threaded hole of the balancing weight, and the bearing spring is arranged in the connecting shaft. The top end of the conductive spring is in contact with the weighing plate, the top end of the connecting shaft is in contact with the balancing weight, the weighing table core is sleeved at the lower end of the connecting shaft, the bearing spring is sleeved on the connecting shaft, the top end of the bearing spring is in contact with the balancing weight, and the bottom end of the bearing spring is in contact with the weighing table core. The beneficial effects of the utility model are that through the arrangement of the conductive spring, the static interference in the weighing process can be reduced, and the weighing accuracy is improved; through the arrangement of the double-layer weighing table core, the interference of static electricity on the weighing result can be better reduced, and the weighing result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic weighing, in particular to an electronic balance weighing platform. Background Art

[0002] As an important component of the electronic balance, the weighing table plays the role of carrying samples. The weighing table used in the laboratory has very high requirements for accuracy, so during the weighing process, special attention should be paid to eliminating environmental interference to the weighing table, such as static electricity. If the weighing table generates static electricity due to the weighed material during the weighing process, it will affect the weighing result of the weighing table core, resulting in inaccurate weighing data. Utility Model Content

[0003] The purpose of the utility model is to provide an electronic balance weighing platform to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electronic balance weighing platform, the weighing platform comprising a weighing pan, a conductive spring, a counterweight, a load-bearing spring, a connecting shaft and a weighing platform core, a circular counterweight concentric with the weighing pan being provided at the center of the weighing pan, an axially arranged threaded hole being provided at the center of the counterweight, the conductive spring being arranged in the threaded hole of the counterweight, the top end of the conductive spring being in contact with the weighing pan, the top end of the connecting shaft being in contact with the counterweight, the weighing platform core being sleeved on the lower end of the connecting shaft, the load-bearing spring being sleeved on the connecting shaft, the top end of the load-bearing spring being in contact with the counterweight, and the bottom end of the load-bearing spring being in contact with the weighing platform core.

[0005] Preferably, the weighing pan is made of stainless steel.

[0006] Preferably, the counterweight block is bonded to the weighing pan by metal glue.

[0007] Preferably, the connecting shaft and the threaded hole are interference fit.

[0008] Preferably, a screw hole is provided on the bottom end surface of the connecting shaft, a fastening bolt is provided in the screw hole, and the fastening bolt is threadedly connected to the screw hole.

[0009] Preferably, a gasket is provided between the fastening bolt and the connecting shaft.

[0010] Preferably, the weighing table core is in the shape of a truncated cone with a larger top and a smaller bottom, and includes a core outer layer and a core inner layer. The core outer layer is made of conductive polyurethane, and the core inner layer is made of brass.

[0011] Preferably, a first cylindrical boss is provided at the bottom end of the threaded hole, and the bottom end of the conductive spring is arranged on the first cylindrical boss.

[0012] Preferably, a second cylindrical boss is provided at the top of the weighing table core, and the bottom end of the load-bearing spring is provided on the second cylindrical boss.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model can reduce the interference of static electricity in the weighing process and improve the weighing accuracy by setting a conductive spring; and can better reduce the interference of static electricity on the weighing result by setting a double-layer weighing table core, making the weighing result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] Figure 3 for Figure 2 Middle AA section view.

[0017] In the figure: 1, weighing plate; 2, conductive spring; 3, counterweight; 31, threaded hole; 32, first cylindrical boss; 4, load-bearing spring; 5, connecting shaft; 6, weighing table core; 61, core outer layer; 62, core inner layer; 63, second cylindrical boss; 7, fastening bolt; 8, gasket. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3 The utility model provides a technical solution: an electronic balance weighing platform, the weighing platform comprises a weighing pan 1, a conductive spring 2, a counterweight 3, a bearing spring 4, a connecting shaft 5 and a weighing platform core 6, the weighing pan 1 is made of stainless steel, and its upper surface is polished to remove non-conductive oxides and impurities, a circular counterweight 3 concentric with the weighing pan 1 is arranged at the center of the weighing pan 1, the counterweight 3 is bonded to the weighing pan 1 by metal glue, an axially arranged threaded hole 31 is arranged at the center of the counterweight 3, the conductive spring 4 is arranged in the threaded hole 31 of the counterweight, the top end of the conductive spring 2 contacts the weighing pan 1, the top end of the connecting shaft 5 contacts the counterweight 3, the connecting shaft 5 is interference fit with the threaded hole 31, the weighing platform core 6 is sleeved on the lower end of the connecting shaft 5, the bearing spring 4 is sleeved on the connecting shaft 5, the top end of the bearing spring 4 contacts the counterweight 3, and the bottom end of the bearing spring 4 contacts the weighing platform core 6.

[0020] In this embodiment, a screw hole is provided on the bottom end surface of the connecting shaft 5, a fastening bolt 7 is provided in the screw hole, the fixing screw 7 is threadedly connected to the screw hole, and the weighing platform is connected to the workbench through the fastening bolt 7. A gasket 8 is provided between the fastening bolt 7 and the connecting shaft 5.

[0021] In this embodiment, the weighing table core 6 is in the shape of a truncated cone with a larger top and a smaller bottom, and includes a core outer layer 61 and a core inner layer 62. The core outer layer 61 is made of conductive polyurethane, and the core inner layer is made of brass.

[0022] In a specific embodiment of the present embodiment, a first cylindrical boss 32 is provided at the bottom end of the threaded hole 31 , and the bottom end of the conductive spring 4 is disposed on the first cylindrical boss 32 .

[0023] In a specific embodiment of the present embodiment, a second cylindrical boss 63 is provided at the top end of the weighing table core 6 , and the bottom end of the load-bearing spring 4 is provided on the second cylindrical boss 63 .

[0024] The first cylindrical boss 32 prevents the conductive spring 2 from being deformed too much during compression and from touching other components, which would affect the test result. The second cylindrical boss 63 is similar to the first cylindrical boss 32 .

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electronic balance weighing platform, characterized in that: The weighing platform includes a weighing pan, a conductive spring, a counterweight, a load-bearing spring, a connecting shaft and a weighing platform core. The bottom end surface of the weighing pan is provided with a circular counterweight concentric with the weighing pan. The center of the counterweight is provided with an axially arranged threaded hole. The conductive spring is arranged in the threaded hole of the counterweight. The top end of the conductive spring contacts the weighing pan, and the top end of the connecting shaft contacts the counterweight. The weighing platform core is sleeved on the lower end of the connecting shaft. The load-bearing spring is sleeved on the connecting shaft. The top end of the load-bearing spring contacts the counterweight, and the bottom end of the load-bearing spring contacts the weighing platform core.

2. The electronic balance weighing platform according to claim 1, characterized in that: The weighing pan is made of stainless steel.

3. An electronic balance weighing platform according to claim 2, characterized in that: The counterweight block is bonded to the weighing pan by metal glue.

4. The electronic balance weighing platform according to claim 3, characterized in that: The connecting shaft is interference fit with the threaded hole.

5. The electronic balance weighing platform according to claim 4, characterized in that: The bottom end surface of the connecting shaft is provided with a screw hole, in which a fastening bolt is provided, and the fastening bolt is threadedly connected with the screw hole.

6. The electronic balance weighing platform according to claim 5, characterized in that: A gasket is arranged between the fastening bolt and the connecting shaft.

7. An electronic balance weighing platform according to claim 6, characterized in that: The weighing table core is in the shape of a truncated cone with a larger top and a smaller bottom, and comprises a core outer layer and a core inner layer. The core outer layer is made of conductive polyurethane, and the core inner layer is made of brass.

8. An electronic balance weighing platform according to claim 7, characterized in that: A first cylindrical boss is disposed at the bottom end of the threaded hole, and the bottom end of the conductive spring is disposed on the first cylindrical boss.

9. An electronic balance weighing platform according to claim 8, characterized in that: A second cylindrical boss is disposed at the top of the weighing platform core, and the bottom end of the load-bearing spring is disposed on the second cylindrical boss.

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