Complete structure of mass comparator

Abstract

The utility model relates to the technical field of mass measurement, and discloses a mass comparator complete machine structure which comprises a base, a balance beam assembly, a detection module, a compensation mechanism, a scale pan, at least two counterbalance mechanisms and a cover body assembly. The base is provided with an installation space used for installing a core element of the quality comparator. The balance beam assembly is arranged in the installation space and is cooperatively connected with the scale pan, and the scale pan is used for bearing an object to be measured. The detection module is used for detecting the displacement or deflection angle of the balance beam assembly and outputting a detection signal, and the compensation mechanism generates compensation force according to the detection signal to enable the balance beam assembly to keep a preset balance position. The balance mechanism acts on the two ends of the balance beam assembly respectively, and adjustment of the measurable range is achieved by adjusting load distribution. The cover body assembly is arranged above the base and comprises at least one door plate capable of being opened and closed, a closed protection space covering the scale pan can be formed when the door plate is closed, and through the design, the measurement precision of the quality comparator can be improved, and the measurement range of the quality comparator can be expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of quality measurement, and further relates to a whole machine structure of a quality comparator. BACKGROUND

[0002] In the measurement process of the existing quality comparator, the measurement range is usually adjusted by relying on the electromagnetic force compensation characteristics of the quality comparator itself. However, the adjustment range of this method is limited, and it is difficult to adapt to large-range quality measurement requirements. When the mass of the measured object changes greatly, the instrument may not be able to provide sufficient compensation force, resulting in a decrease in measurement accuracy and affecting the reliability of the measurement results.

[0003] In addition, the existing quality comparator uses an open-type weighing pan. This design is easily affected by external environmental factors. For example, air flow may cause slight shaking of the weighing pan, which may affect the stability and accuracy of the measurement. CONTENT OF THE INVENTION

[0004] In view of the above technical problems, the purpose of the present application is to provide a whole machine structure of a quality comparator, which can expand the measurement range and improve the measurement stability.

[0005] In order to achieve the above purpose, the present application provides a whole machine structure of a quality comparator, comprising:

[0006] a base having a mounting space for mounting components in the quality comparator;

[0007] a balance beam assembly arranged in the mounting space;

[0008] a detection module and a compensation mechanism, the detection module and the compensation mechanism are arranged in the mounting space, the compensation mechanism acts on the balance beam assembly, the detection module is used for detecting the displacement or deflection angle of the balance beam assembly and corresponding outputting a detection signal, and the compensation mechanism is used for generating a compensation force to make the balance beam assembly remain at a preset balance position;

[0009] a weighing pan connected with one end of the balance beam assembly and located above the base, used for carrying a measured object;

[0010] at least two counterbalance mechanisms arranged at both ends of the balance beam assembly, respectively, for adjusting the load distribution at both ends of the balance beam assembly to adjust the measurable range of the quality comparator;

[0011] a cover assembly arranged above the base, comprising at least one openable and closable door panel, when the door panel is closed, the cover assembly forms a closed protection space surrounding the outside of the weighing pan.

[0012] In some embodiments, each of the counterbalancing mechanisms comprises a driving device, an execution end, and at least one counterbalancing weight, the driving device and the execution end are connected, and the counterbalancing weight is connected to the execution end, so that the execution end drives the counterbalancing weight to move when the driving device operates.

[0013] In some embodiments, the cover assembly further comprises a cover top, a cover bottom, and a mounting portion, the mounting portion is vertically arranged between the cover top and the cover bottom, the mounting portion corresponds to one of the side walls of the cover assembly, and the door plate is located at the adjacent side wall or the opposite side wall of the mounting portion.

[0014] The cover bottom is fixed relative to the top of the base to fix the cover assembly to the base.

[0015] In some embodiments, the two ends of the balance beam assembly are a first end and a second end, the first end corresponds to the scale pan of the mass comparator, and the second end corresponds to the reference load portion of the mass comparator.

[0016] The number of counterbalancing mechanisms is two, one of the counterbalancing mechanisms is a first counterbalancing mechanism for applying a counterbalancing load at the first end, and the other of the counterbalancing mechanisms is a second counterbalancing mechanism for applying a counterbalancing load at the second end.

[0017] The driving device of the second counterbalancing mechanism is fixed to the mounting portion of the cover assembly, the execution end corresponding to the driving device penetrates the cover bottom and the top wall of the base to extend into the mounting space, so that the execution end can drive the corresponding counterbalancing weight to move in the base.

[0018] In some embodiments, the first counterbalancing mechanism is located below the scale pan, the driving device of the first counterbalancing mechanism is a lifting cylinder, and the lifting cylinder is fixed to the base; the output end of the lifting cylinder faces away from the bottom of the base and is connected to the corresponding execution end.

[0019] A weight docking portion is arranged below the scale pan, when the lifting cylinder operates, the execution end drives the corresponding counterbalancing weight to perform a lifting movement, so that the counterbalancing weight is transmitted to the weight docking portion, thereby adjusting the counterbalancing load of the first end.

[0020] In some embodiments, the material of the door plate is transparent, so that the condition of the measured object on the scale pan can be observed through the door plate.

[0021] In some embodiments, the side wall or the top wall of the cover assembly is provided with a transparent observation area, so that the condition of the measured object on the scale pan can be observed through the transparent observation area.

[0022] In some embodiments, the base comprises an upper shell and a lower shell, each having an open cavity, the open cavity of the lower shell facing the cover assembly, and the open cavity of the upper shell facing the opposite direction of the open cavity of the lower shell;

[0023] The upper shell and the lower shell are connected to each other to form an integral structure of the base.

[0024] In some embodiments, the inner part of the upper shell or the lower shell is provided with a limiting stopper;

[0025] The limiting stopper has a ring-shaped profile and is adapted to the size of the compensation mechanism or the detection module to position the corresponding component at a preset position.

[0026] In some embodiments, the bottom of the base is provided with at least one support structure, the support structure being height-adjustable to adjust the relative distance between the base and the working plane.

[0027] In some embodiments, the number of support structures is greater than or equal to two, and the support structures are symmetrically distributed along the central axis of the base.

[0028] Each of the support structures comprises a support column and a support plate, the support column being vertically arranged and connected to the bottom of the base, and the support plate being connected to the end of the support column, so that the support structure has an inverted T shape, and at least one height adjustment module is arranged in the support column to adjust the vertical height of the support column.

[0029] Compared with the prior art, the whole machine structure of the quality comparator provided by the present application has the following beneficial effects: through the load adjustment of the double-side counterbalancing mechanism at both ends of the balance beam assembly, the measurement range can be dynamically expanded while maintaining the original high precision of the comparator, which can not only meet the fine measurement requirements of small quality, but also can improve the large quality measurement capability of the quality comparator by loading the counterbalancing load, thereby enhancing the adaptability of the equipment to different range working conditions. At the same time, the closed protection space formed by the cover assembly effectively isolates the external airflow, dust and humidity interference, which can reduce the influence of environmental factors on the measurement results. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above-mentioned features, technical characteristics, advantages and implementation modes of the present application will be further described in the following preferred embodiments in a clear and understandable manner combined with the accompanying drawings.

[0031] Figure 1 is a schematic diagram of the whole structure of an embodiment of the present application;

[0032] Figure 2is a partial structural schematic diagram of one embodiment of the present application;

[0033] Figure 3 is Figure 1 is an enlarged view of A in

[0034] Figure 4 is a whole structural schematic diagram of one embodiment of the present application;

[0035] Figure 5 is a structural schematic diagram of an upper shell in one embodiment of the present application;

[0036] Figure 6 is a structural schematic diagram of a lower shell in one embodiment of the present application.

[0037] BRIEF DESCRIPTION OF DRAWINGS Base 1; upper shell 110; lower shell 120; limiting baffle 200; balance beam assembly 2; first end 201; second end 202; compensation mechanism 3; scale pan 4; weight butt joint part 41; first counterbalance mechanism 51; second counterbalance mechanism 52; driving device 530; execution end 540; limiting part 5401; counterbalance weight 550; cover assembly 7; door plate 71; wind cover top cover 72; wind cover bottom plate 73; mounting part 74; support structure 8; support column 81; support plate 82; display module 90. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0039] In order to make the drawing simple, only the shell related to the application is schematically shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is schematically shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0040] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0041] In this document, unless otherwise indicated and limited, the terms "mount", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the measurement process of the existing mass comparator, it usually relies on its own electromagnetic force compensation characteristics to expand the measurement range. However, due to the limited ability of electromagnetic force compensation, when the mass of the measured object changes greatly, the instrument may not be able to provide sufficient compensation force, resulting in limited measurement range. In addition, with the increase of compensation force, the stability and measurement accuracy of the system may decrease, thereby affecting the reliability of the measurement results. Therefore, the existing mass comparator has certain limitations in adapting to different range requirements.

[0045] On the other hand, some existing mass comparators may adopt an open scale design, that is, the scale is directly exposed to the external environment. Although this design is convenient to operate, it is easily disturbed by environmental factors in actual use. For example, air flow may cause the scale to sway slightly, causing the measurement reading to fluctuate and affecting the measurement stability. In addition, factors such as dust and humidity changes in the external environment may also adversely affect the measurement accuracy, especially in high-precision measurement applications. These external disturbances may cause the accumulation of measurement errors, thereby reducing the overall measurement performance of the instrument.

[0046] In one embodiment, the reference drawings attached Figure 1The whole machine structure of the mass comparator provided in the application is described, and the whole machine structure of the mass comparator provided in the application can effectively expand the measurement range of the mass comparator and reduce the influence of external factors on the measurement results.

[0047] Reference is made to the accompanying drawings Figure 1 and Figure 2 The whole machine structure of the mass comparator provided in the application comprises a base 1, a balance beam assembly 2, a detection module, a compensation mechanism 3, a scale pan 4, at least two counterbalance mechanisms, and a cover assembly 7.

[0048] The base 1 has a mounting space for accommodating the core components of the mass comparator. The balance beam assembly 2 is arranged in the mounting space of the base 1. The scale pan 4 is connected with one end of the balance beam assembly 2 and is located above the base 1, and is used to carry the object to be measured. The detection module and the compensation mechanism 3 are also arranged in the mounting space. The detection module is used to detect the displacement or deflection angle of the balance beam assembly 2 and transmit the detection signal to the compensation mechanism 3. The compensation mechanism 3 generates a corresponding compensation force according to the signal to maintain the balance beam assembly 2 at a preset balance position.

[0049] Generally, the compensation mechanism 3 usually adopts an electromagnetic force generating device to generate an electromagnetic compensation force by adjusting the current of the electromagnetic coil. When the object to be measured is placed on the scale pan 4, the scale pan 4 exerts a force on the balance beam assembly 2, causing the balance beam assembly 2 to slightly deflect or displace. The detection module detects this change and outputs a corresponding signal to the control system. The control system adjusts the output current of the compensation mechanism 3 according to the detection signal, that is, controls the electromagnetic force generating device to generate an electromagnetic force of a corresponding size, which acts on the relevant position of the balance beam assembly 2, thereby offsetting the imbalance caused by the mass of the object to be measured, so that the balance beam assembly 2 returns to the preset balance position. By measuring the current value required by the compensation mechanism 3 and combining the calibration parameters of the instrument, the mass of the object to be measured can be accurately calculated.

[0050] Importantly, the whole machine structure of the mass comparator in the application comprises at least two counterbalance mechanisms, which are arranged at both ends of the balance beam assembly 2 respectively, for adjusting the load distribution at both ends of the balance beam assembly 2 to expand the measurable range of the mass comparator, thereby improving the stability and adaptability of the instrument under different measurement ranges.

[0051] It should be noted that in specific applications, the counterbalance mechanism can achieve the adjustment of the measurement range in various ways. For example, when measuring a larger mass of the measured object, the counterbalance load can be increased at both ends of the balance beam assembly 2 to increase the overall measurement range, while ensuring that the instrument can still maintain high measurement accuracy and stability under larger loads; similarly, when the mass of the measured object is small, the counterbalance load can be reduced at both ends, so that the initial load of the balance beam assembly 2 is smaller, thereby enabling the measurement range of the mass comparator to be expanded downward.

[0052] Moreover, in some special measurement requirements, the counterbalance load can be increased at one end of the balance beam assembly 2 while the counterbalance load is reduced at the other end to change the initial inclination state of the balance beam. This method is suitable for specific measurement modes, such as special adjustments when measuring extremely light or extremely heavy objects to optimize measurement sensitivity and accuracy.

[0053] In order to reduce the influence of external environmental factors on the measurement accuracy, such as Figure 1 and Figure 4 The present application sets a cover assembly 7 above the base 1, which includes at least one openable and closable door panel 71. When the door panel 71 is closed, the cover assembly 7 forms a closed protective space surrounding the outside of the weighing pan 4, thereby effectively preventing the slight disturbance of air flow on the weighing pan 4, reducing measurement errors, and also playing a role in dust and moisture prevention, further improving the reliability of the instrument.

[0054] In different design schemes, the door panel 71 can adopt different opening and closing mechanisms such as hinge type, sliding type or magnetic type. For example, the sliding door panel 71 can be smoothly slid through a guide rail structure to reduce the airflow disturbance when opening and closing.

[0055] In addition, the cover assembly 7 can also be provided with a sealing strip to enhance the airtightness and avoid the influence of external humidity and dust on the measurement environment. In some high-precision measurement requirements, the cover assembly 7 can be further provided with a temperature and humidity adjusting device inside to ensure a constant measurement environment, thereby reducing the disturbance of environmental factors on the measurement results.

[0056] Based on the embodiment, optionally, the door plate 71 is made of transparent material, and high-transmittance acrylic plate or tempered glass can be used to clearly present the condition of the measured object on the scale pan 4. When the mass comparator is in operation, the user can directly observe the measured object on the scale pan 4 through the door plate 71 without opening the door plate 71. For example, when weighing medicines in a laboratory, the experimental personnel can observe whether the medicines are placed in the center of the scale pan 4 or check whether the medicines are spilled during the weighing process in the closed state of the door plate 71. Of course, a transparent observation area can also be provided on the side wall or top wall of the cover assembly 7, and the user can observe the measured object on the scale pan 4 from different angles according to actual needs. The two schemes can be used independently or in combination.

[0057] Further, in the present application, the mass comparator also includes a display module 90 to display the measurement results, and a touch element can be integrated on the display module 90 to adjust the counterbalance load at both ends of the balance beam.

[0058] In another embodiment, the counterbalance mechanism can be designed with automatic adjustment, that is, through the combination of a control terminal and an induction module, after the measured object is placed on the scale pan 4, the terminal automatically controls the loading and unloading of the counterbalance weight 550, so that the mass comparator can automatically adjust the measurement range according to different measurement requirements without manual intervention, thereby improving the measurement efficiency and operation convenience.

[0059] In one embodiment, based on the above embodiment, as shown in Figure 3 The counterbalance mechanism includes a driving device 530, an execution end 540, and at least one counterbalance weight 550.

[0060] Specifically, the driving device 530 is used to provide power, and under the action of the driving device 530, the execution end 540 can move accurately according to the set path, thereby realizing the loading or unloading of the counterbalance weight 550. The driving device 530 can be driven by a motor, such as a stepper motor or a servo motor, or by a pneumatic or hydraulic drive. The operator should select the appropriate driving scheme according to different application scenarios.

[0061] The counterbalance weight 550 is connected to the execution end 540 to ensure that the execution end 540 can reliably drive the counterbalance weight 550 to move when the driving device 530 is in operation. When the driving device 530 is started, the execution end 540 drives the counterbalance weight 550 to move along the set trajectory, for example, the execution end 540 can move the counterbalance weight 550 to a predetermined position, so that it is connected to the corresponding end of the balance beam assembly 2, thereby increasing the load of the end, or the execution end 540 can drive the counterbalance weight 550 away from the end of the balance beam assembly 2, so that it is converted from the loading state to the unloading state to reduce the load of the end.

[0062] In practical applications, the counterbalancing mechanism can adopt a linear guide rail or other guide structure to enable the execution end 540 to move smoothly along a set trajectory, so as to ensure the smooth and reliable loading and unloading process of the counterbalancing weight 550 and avoid the influence of inertia impact on the measurement stability.

[0063] Optionally, corresponding quick docking structures, such as magnetic adsorption, buckle type fixing, etc., are arranged on the execution end 540 and the balance beam assembly 2, so as to facilitate the quick replacement of the counterbalancing weight 550 and improve the operation efficiency.

[0064] In one embodiment, in combination with Figure 1 and Figure 3 The cover assembly 7 includes a fan cover top cover 72, a fan cover bottom plate 73, and a mounting portion 74. The fan cover bottom plate 73 is relatively fixed with the top of the base 1, so as to ensure that the cover assembly 7 can be stably mounted on the base 1 and will not be affected by external vibration or air flow. The fan cover top cover 72 is located at the top of the cover assembly 7 and provides upper support for the closed structure.

[0065] The mounting portion 74 is vertically arranged between the fan cover top cover 72 and the fan cover bottom plate 73 and corresponds to one side wall of the cover assembly 7. The door plate 71 is arranged on the adjacent side wall or the opposite side wall of the mounting portion 74 and can be opened and closed according to actual needs.

[0066] It should be noted that in the present embodiment, the mounting portion 74 can be used to mount specific functional components, and at the same time, the mounting portion 74 can be adjusted in material and shape to serve as a reinforcing frame, so that the cover assembly 7 can withstand certain external force impact.

[0067] In addition, based on the above, a plurality of lateral enclosing components are arranged between the fan cover top cover 72 and the fan cover bottom plate 73 to form the overall closed structure of the cover assembly 7. These lateral enclosing components can include transparent or translucent fan cover glass, metal frames, or side walls made of other rigid materials to ensure the mechanical strength of the cover assembly 7 and facilitate user observation of the measurement state inside the scale pan 4. Generally, the fan cover glass adopts high light transmittance materials such as tempered glass or high molecular transparent materials, so that the operator can clearly observe the internal measurement process without affecting the airtightness and stability of the measurement.

[0068] It should be noted that the design of the cover assembly 7 does not necessarily require complete coverage of the base 1, but focuses on protection around the outer periphery of the scale pan 4, which can effectively isolate environmental interference and maintain the structural rationality of the mass comparator without affecting the normal heat dissipation and maintenance of the components of the base 1.

[0069] In one embodiment, based on the above embodiment, it needs to be further explained that reference is made to the drawingsFigure 2 The two ends of the balance beam assembly 2 are respectively a first end 201 and a second end 202, wherein the first end 201 corresponds to the pan 4 for placing the measured object, and the second end 202 corresponds to the reference load part. Two counterbalancing mechanisms are used to act on the first end 201 and the second end 202 of the balance beam assembly 2. The first counterbalancing mechanism 51 is used to apply a counterbalancing load at the first end 201 to adjust the load distribution at the pan end, and the second counterbalancing mechanism 52 is used to apply a counterbalancing load at the second end 202 to adjust the load at the reference load part.

[0070] The driving device 530 of the second counterbalancing mechanism 52 is fixed to the mounting portion 74 of the cover assembly 7 instead of being directly mounted in the base 1. The driving device 530 is connected with the counterbalancing weight 550 through an execution end 540, the execution end 540 penetrates the top wall of the base 1 and the bottom plate 73 of the cover, and extends into the mounting space of the base 1 to drive the counterbalancing weight 550 to move inside the base 1.

[0071] It should be noted that in the current technology, one end of the balance beam assembly 2 corresponds to the pan 4 for placing the measured object, and the other end corresponds to the reference load part. The reference load part is usually composed of high-precision standard weights or other devices with accurate known mass, and its main function is to provide an accurate reference for mass comparison. When the measured object is placed on the pan 4, the mass of the measured object can be accurately measured by comparing the mass of the measured object with the known mass of the reference load part.

[0072] In the embodiment, the driving device 530 of the second counterbalancing mechanism 52 is arranged in the cover assembly 7, so that the space of the base 1 can be more effectively utilized, and the height direction occupation of the whole machine is reduced to some extent, so that the overall size of the instrument is more compact. Moreover, other functional components in the base 1, such as the detection module and the compensation mechanism 3, can be more reasonably arranged, so that the compactness and maintainability of the whole machine structure are improved.

[0073] In other embodiments, the driving device 530 of the second counterbalancing mechanism 52 can be driven by a motor, a linear actuator or other suitable driving mode to realize accurate control of the execution end 540. Meanwhile, a limiting portion 5401 can be arranged on the execution end 540 to prevent the counterbalancing weight 550 from falling off the execution end 540. Figure 1 As shown in FIG. 6, the counterbalancing weight 550 is sleeved on the execution end 540, and a limiting portion 5401 is arranged at the end of the execution end 540, so that the upper counterbalancing weight 550 cannot fall off. When the counterbalancing weight 550 needs to be loaded to the balance beam assembly 2, the execution end 540 drives the counterbalancing weight 550 to descend, the limiting portion 5401 is separated from the counterbalancing weight 550, and then the counterbalancing weight 550 abuts against the surface of the balance beam assembly 2 to complete the loading. Conversely, it is the unloading process, which will not be described here.

[0074] Further, as shown in Figure 2 It can be understood that, since the first counterbalancing mechanism 51 is arranged below the weighing pan 4, the driving device 530 and the movement track of the counterbalancing weight 550 will not affect the upper space of the weighing pan 4, so that the object to be measured can be stably placed without interference.

[0075] The driving device 530 of the first counterbalancing mechanism 51 is a lifting cylinder, which is fixed to the base 1, and the output end thereof faces away from the bottom of the base 1 and is connected to the corresponding execution end 540. A weight docking portion 41 is arranged below the weighing pan 4, and when the lifting cylinder operates, the execution end 540 drives the corresponding counterbalancing weight 550 to ascend and descend, so as to transfer the counterbalancing weight 550 to the weight docking portion 41, thereby adjusting the counterbalancing load of the first end 201.

[0076] Based on the embodiment, the counterbalancing weights 550 in the first counterbalancing mechanism 51 can be multiple, and the multiple counterbalancing weights 550 can have different masses, so as to achieve different load adjustment effects through the combination use of different counterbalancing weights 550; in actual application, the lifting cylinder pushes the multiple counterbalancing weights 550 to the docking portion in sequence according to a preset program, and a fixed additional load is generated at the first end 201 of the balance beam assembly 2 with each increase of a counterbalancing weight 550, so as to expand the upper limit of the range.

[0077] Meanwhile, by arranging the lifting cylinder, the movement direction of the counterbalancing weight 550 is consistent with the direction of gravity, and such a structural design reduces the unstable factors caused by transverse movement and improves the overall reliability of the system.

[0078] In one embodiment, referring to the accompanying Figure 1 , Figure 5 and Figure 6 , the base 1 includes an upper shell 110 and a lower shell 120, both of which have open cavities and are fixed by mutual connection to form a complete base 1 structure. The opening of the lower shell 120 faces the cover assembly 7, and the opening of the upper shell 110 faces the opposite direction of the lower shell 120.

[0079] It can be understood that, since the base 1 adopts the upper and lower shell 120 splicing mode, the various functional components inside the base 1 can be more convenient to install and maintain, avoiding the inconvenience caused by the closed structure, and improving the maintainability of the equipment.

[0080] Furthermore, since the base 1 needs to house various electronic and mechanical components, such as detection modules, compensation mechanisms 3, and balancing mechanisms, dedicated cable channels can be added to the internal structures of the upper housing 110 and the lower housing 120 to make electrical connections more orderly, reduce interference problems caused by messy wiring, and improve the reliability of the system.

[0081] Meanwhile, in order to improve heat dissipation performance, ventilation holes or heat sinks can be provided on the upper housing 110 and the lower housing 120 to ensure that the electronic components can maintain a stable working state during long-term operation.

[0082] Based on the above embodiments, as shown in the figure, a limiting stop 200 is provided inside the lower housing 120 (in other implementations, the limiting stop 200 can also be provided inside the upper housing 110). The limiting stop 200 has an annular outline and is adapted to the size of the compensation mechanism 3 or the detection module, so as to position the corresponding component in a preset position and play a guiding and limiting role.

[0083] It should be noted that the limiting stop 200 allows the compensation mechanism 3 or the detection module to be directly aligned with the specific installation position during installation, avoiding component positional deviations due to human error, thereby ensuring the measurement accuracy and consistency of the instrument. Especially in high-precision measurement environments, component positional deviations may affect the deviation of the electromagnetic compensation force's point of application and calculation accuracy, while the limiting stop 200 can effectively avoid such problems and improve the reliability of measurement results.

[0084] Meanwhile, because the mass comparator needs to maintain extremely high measurement accuracy, even slight movements of its internal structure can affect the stability of the measurement data. The supporting and guiding function of the limiting stop 200 ensures that the compensation mechanism 3 and the detection module remain stable during operation, reducing potential loosening or displacement caused by external vibrations or prolonged use, thereby improving the long-term stability of the instrument. Furthermore, a flexible buffer layer can be added to the inner side of the limiting stop 200 to absorb minor vibrations, further enhancing the instrument's anti-interference capability.

[0085] In one embodiment, such as Figure 1 As shown, the bottom of the base 1 is provided with at least one support structure 8, which is height adjustable, so that the user can flexibly adjust the relative distance between the base 1 and the working plane according to actual needs.

[0086] It can be understood that the measurement accuracy of the quality comparator is easily affected by external environmental factors, such as uneven ground, workbench vibration or slight displacement, etc. The height-adjustable support structure 8 can compensate for these interference factors, so that the instrument can be stably placed on the workbench. For example, when the instrument is placed on a slightly inclined surface, the base 1 can be kept horizontal by independently adjusting the height of each support structure 8, ensuring the accuracy of the measurement results.

[0087] Due to the differences in the height, level and vibration environment of the table in different laboratories or workplaces, the fixed-height base 1 may not fully adapt to all use scenarios. By setting the height-adjustable support structure 8, the user can fine-tune the overall height of the base 1 according to the specific use environment to ensure the optimal working state of the instrument.

[0088] On the other hand, during routine maintenance, such as cleaning the bottom of the base 1 or adjusting the internal components of the base 1, the user can appropriately raise the support structure 8 to leave enough operating space between the bottom of the base 1 and the workbench, thereby improving the convenience of maintenance.

[0089] In an embodiment, a screw lifting mechanism can be selected to realize the height adjustment of the support structure 8, and the support height is adjusted by rotating the extension length of the adjusting screw. In addition, scale marks can be added to the screw structure to enable the user to accurately control the adjustment height to meet specific measurement requirements.

[0090] Based on the above embodiments, in an embodiment, the number of support structures 8 is greater than or equal to two, and is symmetrically distributed along the central axis of the base 1 to ensure the balanced force of the equipment and avoid the instrument tilting or the center of gravity shifting due to uneven distribution of support points, thereby affecting the measurement accuracy.

[0091] In an embodiment, as shown in the accompanying drawings Figure 4 Each support structure 8 includes a support column 81 and a support plate 82. The support column 81 is vertically arranged and connected to the bottom of the base 1, and the support plate 82 is connected to the end of the support column 81, so that the entire support structure 8 has an inverted T-shaped layout. The support plate 82 expands the contact area between the support structure 8 and the workbench to increase the stability of the comparator in various working environments.

[0092] At least one height adjustment module (not shown in the drawings) is arranged in the support column 81, which is used to adjust the vertical height of the support column 81, so that the user can accurately adjust the distance between the equipment and the workbench according to different working environments.

[0093] In this way, by the arrangement in the present embodiment, the support structures 8 can also be used to compensate for unevenness of the table. For example, during installation or use, the user can adjust the height of the different support structures 8 respectively, so that the base 1 always remains in a horizontal state, thereby ensuring accurate measurement of the quality comparator.

[0094] In particular, the height adjustment module can be any one of a screw lifting type adjustment module, a pneumatic or hydraulic height adjustment module, or an electric adjustment module, for example an electric adjustment module driven by a motor, which can be adjusted in height by an external controller or an automatic detection system, or can be combined with a level sensor to achieve automatic leveling function and improve measurement accuracy according to specific needs.

[0095] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A mass comparator instrument structure, characterized by comprising: The quality comparator comprises: a base having a mounting space for mounting components in the quality comparator; a balance beam assembly arranged in the mounting space; a detection module and a compensation mechanism, both arranged in the mounting space, the compensation mechanism acting on the balance beam assembly, the detection module being used for detecting displacement or deflection angle of the balance beam assembly and outputting a detection signal, and the compensation mechanism being used for generating a compensation force to keep the balance beam assembly at a preset balance position according to the detection signal; a scale plate connected with one end of the balance beam assembly and located above the base for carrying a measured object; at least two counterbalance mechanisms arranged at two ends of the balance beam assembly respectively for adjusting load distribution at the two ends of the balance beam assembly to adjust a measurable range of the quality comparator; a cover assembly arranged above the base and comprising at least one openable and closable door panel, the cover assembly forming a closed protection space surrounding the scale plate when the door panel is closed.

2. The quality comparator complete machine structure according to claim 1, wherein each of the counterbalance mechanisms comprises a driving device, an execution end and at least one counterbalance weight, the driving device and the execution end being connected, and the counterbalance weight being connected to the execution end so that the execution end drives the counterbalance weight to move when the driving device operates.

3. The quality comparator complete machine structure according to claim 2, wherein the cover assembly further comprises a fan cover top cover, a fan cover bottom plate and a mounting portion, the mounting portion being arranged vertically between the fan cover top cover and the fan cover bottom plate, the mounting portion corresponding to one side wall of the cover assembly, and the door panel being located at an adjacent side wall or an opposite side wall of the mounting portion; the fan cover bottom plate is fixed with respect to the top of the base to fix the cover assembly to the base.

4. The quality comparator complete machine structure according to claim 3, wherein the two ends of the balance beam assembly are a first end and a second end, the first end corresponding to the scale plate of the quality comparator, and the second end corresponding to a reference load portion of the quality comparator; the number of the counterbalance mechanisms is two, one of the counterbalance mechanisms being a first counterbalance mechanism for applying a counterbalance load at the first end, and the other of the counterbalance mechanisms being a second counterbalance mechanism for applying a counterbalance load at the second end; the driving device of the second counterbalance mechanism is fixed to the mounting portion of the cover assembly, and the execution end corresponding to the driving device penetrates through the fan cover bottom plate and the top wall of the base to extend into the mounting space, so that the execution end can drive the corresponding counterbalance weight to move in the base.

5. The quality comparator complete machine structure according to claim 4, wherein the first counterbalance mechanism is located below the scale plate, the driving device of the first counterbalance mechanism being a lifting cylinder, the lifting cylinder being fixed to the base, the output end of the lifting cylinder facing away from the bottom of the base, and the output end being connected to the corresponding execution end oppositely. The balance pan is provided with a weight docking portion below, when the lifting cylinder operates, the execution end drives the corresponding counterweight to make lifting movement, so as to transmit the counterweight to the weight docking portion, thereby adjusting the counterweight load of the first end.

6. The mass comparator complete machine structure according to any one of claims 1-5, characterized in that, The material of the door plate is transparent, so that the condition of the object to be measured on the balance pan can be observed through the door plate. And / or, the side wall or top wall of the cover assembly is provided with a transparent observation area, which is used for observing the condition of the object to be measured on the balance pan through the transparent observation area.

7. The mass comparator complete machine structure according to any one of claims 1-5, characterized in that, The base comprises an upper shell and a lower shell, the upper shell and the lower shell have cavities with openings respectively, the opening of the lower shell faces the cover assembly, and the opening of the upper shell faces the opposite direction of the opening of the lower shell; The upper shell and the lower shell are connected and fixed to each other to jointly form the overall structure of the base.

8. The mass comparator complete machine structure according to claim 7, characterized in that, The inner part of the upper shell or the lower shell is provided with a limiting stop edge; The limiting stop edge has a ring-shaped contour and is matched with the size of the compensation mechanism or the detection module, so as to position the corresponding component at a preset position.

9. The mass comparator complete machine structure according to any one of claims 1-5, 8, characterized in that, The bottom of the base is provided with at least one support structure, the support structure is provided with height adjustment, which is used for adjusting the relative distance between the base and the working plane.

10. The mass comparator complete machine structure according to claim 9, characterized in that, The number of the support structures is greater than or equal to two, and the support structures are symmetrically distributed along the central axis of the base; Each support structure comprises a support column and a support plate, the support column is vertically arranged and connected to the bottom of the base, the support plate is connected to the end of the support column, so that the support structure has an inverted T shape, and at least one height adjustment module is arranged in the support column, which is used for adjusting the vertical height of the support column.

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