CN219996323U

CN219996323U - Self-opening ultralow platform scale

Info

Publication number: CN219996323U
Application number: CN202321159072.1U
Authority: CN
Inventors: 庞涯; 张加海; 张奇达
Original assignee: Locosc Ningbo Precision Technology Co ltd
Current assignee: Locosc Ningbo Precision Technology Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-11-10
Anticipated expiration: 2033-05-15

Abstract

The utility model relates to a self-opening ultralow platform scale, comprising: the bottom frame device is provided with a bottom frame and a buckle assembly; the weighing platform device is provided with a weighing body assembly, four sensor assemblies and a support leg assembly. The support rod assembly comprises at least one lifting frame and a telescopic element, wherein the lifting frame comprises an unfolding posture of lifting the scale body assembly under the stretching out posture of the telescopic element and a shrinking posture of keeping away from the scale body assembly under the retracting posture of the telescopic element. The support leg assembly is pressed and connected to the bottom frame in a shrinkage gesture, and the buckle assembly is clamped and connected with the lifting frame. The bottom frame device is matched with the weighing platform device, and the supporting rod assembly can support the weighing platform device to rotate away from the bottom frame device so as to flush the surfaces of the weighing platform device and the bottom frame device thoroughly. The bottom frame integrated structure does not need to beat expansion bolts on the ground, and the supporting foundation is smooth and has good stress effect.

Description

Self-opening ultralow platform scale

Technical Field

The utility model relates to the technical field of weighing, in particular to a self-opening ultralow platform scale.

Background

The ultra-low platform scale can be used for metering and weighing in the fields of food and chemical industry, and the ultra-low platform scale needs to be washed after the weighing is completed so as to avoid corrosive substance residues and bacteria breeding. The washing is not only needed to clean the surface of the ultra-low platform balance, but also needed to clean the bottom of the weighing platform. However, ultra low platform scales are used as standard metering devices and require debugging prior to use to ensure metering accuracy. The ultra-low platform balance is frequently cleaned, deviation of the position of the supporting leg of the sensor is easily caused, and the technical problem of inaccurate metering is caused.

Chinese patent CN213090926U discloses an openable stainless steel platform balance, including a balance body base, four corners of the lower end surface of the balance body base are all fixed with weighing sensors, the bottom of one end of each weighing sensor far away from the balance body base is all fixed with supporting feet, a panel assembly is mounted on the balance body base, the panel assembly comprises a panel and two channel steels distributed in the front-back direction, the two channel steels are respectively welded and fixed with the front end of the panel and the rear end of the panel, the right end of each channel steel is hinged with the right end of the frame on the corresponding side in the balance body base through a hinge, the left end of each channel steel is connected with the middle part of the frame on the corresponding side in the balance body base through a gas spring, and a handle is welded and fixed on the outer side wall of the left end of each channel steel; the panel assembly inside the balance body can be rotated and opened relative to the base of the balance body, so that convenience can be brought to cleaning of sundries between the panel assembly and the base of the balance body.

However, the platform balance is opened through the panel, the bottom of the weighing platform is difficult to clean, the whole panel-opened platform balance is easy to shift, and the installation position of the platform balance is moved, so that the technical problem of re-correction is required.

Disclosure of Invention

In order to overcome the problems in the related art, the embodiment of the utility model provides a self-opening ultralow platform scale.

According to an embodiment of the present utility model, there is provided a self-opening ultralow platform scale, including:

the bottom frame device is provided with a bottom frame and a buckle assembly arranged on the bottom frame;

the weighing platform device is provided with a weighing body assembly, four sensor assemblies arranged on the weighing body assembly and support leg assemblies correspondingly arranged on each sensor assembly;

the support rod assembly comprises at least one lifting frame hinged to the bottom frame and a telescopic element correspondingly connected with the lifting frame and the bottom frame, at least part of the lifting frame stretches into the lower part of the scale body assembly, and the lifting frame comprises an unfolding posture for lifting the scale body assembly in the stretching posture of the telescopic element and a shrinking posture far away from the scale body assembly in the retracting posture of the telescopic element;

the supporting leg assemblies are in compression joint with the bottom frame in a shrinkage gesture, and the buckle assemblies are in clamping joint with the lifting frame.

In an embodiment, the lifting frames are symmetrically distributed on the bottom frame.

In an embodiment, the lifting frame comprises a rotating arm and a torque arm which is connected with the rotating arm in a bending mode, the rotating arm is parallel to the edge of the scale body assembly, the local protrusion of the rotating arm extends into the lower portion of the scale body assembly, the torque arm extends out of the upper surface of the rotating arm, and the telescopic element is hinged with the torque arm.

In an embodiment, the rotating arm comprises a connecting plate, at least one lower lifting plate and an upper limiting plate, wherein the lower lifting plate and the upper limiting plate are partially bent and protruded from two sides of the connecting plate, and the edge of the balance body assembly is located between the lower lifting plate and the upper limiting plate.

In an embodiment, the underframe device comprises a first side frame, a front frame, a second side frame and a rear frame which are fixedly connected, the second side frame is arranged opposite to the first side frame, the lifting frame is correspondingly hinged to the first side frame and the second side frame, and the scale body assembly moves towards the rear frame direction when in an unfolding posture.

In an embodiment, the bottom frame device further comprises a top bead assembly mounted on the rear frame, and the top bead assembly protrudes toward the scale body assembly.

In an embodiment, the bottom frame device further comprises four limiting rings fixedly distributed on the first side frame and the second side frame, the positions of the limiting rings correspond to the supporting leg assemblies, and chamfers are arranged on openings of the limiting rings.

In an embodiment, the buckle assembly comprises a buckle plate rotatably connected to the bottom frame and a buckle handle fixed to the buckle plate, the buckle plate is provided with a buckle groove, the lifting frame is provided with a buckle column adapting to the buckle groove, and the buckle plate is buckled to the buckle column in the shrinkage gesture.

In an embodiment, the scale body assembly further comprises a slope guiding assembly, wherein the slope guiding assembly is provided with a slope guiding plate, and the tail end height of the slope guiding plate is larger than or equal to the table top height of the scale body assembly.

In one embodiment, the ramp component is hingedly connected to the bottom frame; or, the slope guiding component is connected with the bottom frame in a plug-in fit manner through a pin shaft.

According to the technical scheme provided by the embodiment of the utility model, the bottom frame device is matched with the weighing platform device, and the supporting rod assembly can support the weighing platform device to rotate away from the bottom frame device so as to flush the surfaces of the weighing platform device and the bottom frame device thoroughly. The support rod assembly rotates to be separated from the weighing platform device, and the weighing platform device is erected on the same position of the bottom frame device so as to maintain the installation repeatability and the metering accuracy of the weighing platform device and avoid repeated correction of the weighing platform device. The buckle component can lock the support rod component so as to avoid the problem that the support rod component touches the weighing platform device to cause measurement distortion when the weighing platform device is in a use state. The bottom frame integrated structure does not need to beat expansion bolts on the ground, and the supporting foundation is smooth and has good stress effect.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic view of an ultra-low platform scale according to an exemplary embodiment.

Fig. 2 is a schematic view showing a structure in which an ultra-low platform scale is in an opened state according to an exemplary embodiment.

Fig. 3 is a schematic view showing a structure in which the ultra-low platform balance is in use, according to an exemplary embodiment.

Fig. 4 is a schematic side view of an ultra-low platform scale in an open state according to an exemplary embodiment.

Fig. 5 is a schematic top view of an ultra-low platform scale according to an exemplary embodiment.

In the figure, a weighing platform device 10; a scale body assembly 11; a side rail 111; a deck plate 112; a reinforcing beam 113; a sensor assembly 12; a leg assembly 13; a bottom frame device 20; a bottom frame 21; a first side frame 211; a second side frame 212; a rear frame 213; a front bezel 214; an adjustment plate 215; a sleeve 216; a stop collar 217; chamfering 218; a catch assembly 22; a snap handle 221; a clasp plate 222; a card slot 223; a top bead assembly 23; a bolt assembly 231; a ball nut 232; a brace assembly 30; a lifting frame 31; a swivel arm 311; a lower lift plate 3111; an upper limit plate 3112; a connection plate 3113; torque arm 312; first force arm 3121; a second moment arm 3122; a snap post 313; a telescoping member 32; a ramp assembly 40; and a ramp plate 41.

Detailed Description

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the present utility model provides a self-opening ultralow platform balance, which includes a bottom frame device 20, a weighing platform device 10, and a support rod assembly 30 connecting the bottom frame device 20 and the weighing platform device 10, wherein the weighing platform device 10 is integrally opened relative to the bottom frame device 20 under the driving of the support rod assembly 30, so as to facilitate cleaning of the bottom surface of the weighing platform device 10. After the weighing platform device 10 is cleaned, the support rod assembly 30 controls the weighing platform device 10 to turn towards the bottom frame device 20 and separate from the weighing platform device 10, the weighing platform device 10 is erected on the bottom frame device 20, and the weighing part of the weighing platform device 10 is not contacted with the bottom frame device 20 and the support rod assembly 30, so that an accurate metering structure is formed.

The bottom frame device 20 is a unitary frame structure, and the bottom frame device 20 is configured with a bottom frame 21 surrounding a rectangular frame structure formed by surrounding and a buckle assembly 22 mounted on the bottom frame 21. One end of the buckle component 22 is rotatably connected to the bottom frame 21, thereby forming a rotary buckle connection structure. Preferably, a clamping groove 223 is provided on the buckle assembly 22, and the clamping groove 223 is used for clamping and locking the columnar protrusion of the stay assembly 30 on the rotation path.

The weighing platform device 10 is used for a weighing unit for measuring and outputting weighing parameters, and in a weighing state, the weighing platform device 10 is not contacted with the bottom frame device 20 and the supporting rod assembly 30, so that the accuracy of measurement is maintained. The weighing platform device 10 is provided with a scale body assembly 11, four sensor assemblies 12 mounted on the scale body assembly 11, and leg assemblies 13 correspondingly mounted on each sensor assembly 12. The sensor assemblies 12 are distributed at four corners of the scale body assembly 11, and are pressed against the bottom frame 21 by the leg assemblies 13. The bottom frame 21 is arranged into an integral structure, can be automatically adapted to different bearing bottom surfaces, and has small damage to the ground. The scale body assembly 11 can be automatically leveled on the bottom frame 21, and can be repeatedly positioned at the corresponding position after one correction, so that the positioning accuracy is high. Alternatively, the scale body assembly 11 includes two parallel side beams 111, a deck plate 112 connected to the two side beams 111, and a plurality of reinforcing beams 113 positioned under the deck plate 112, the sensor assembly 12 is mounted to the side beams 111, and both ends of the reinforcing beams 113 are welded to the side beams 111.

The brace assembly 30 includes at least one lifting frame 31 hingedly connected to the base frame 21, and a telescoping member 32 correspondingly connecting the lifting frame 31 to the base frame 21, at least a portion of the lifting frame 31 extending below the scale body assembly 11. The lifting frame 31 extends into the lower part of the scale body assembly 11 and is arranged at intervals with the lower surface of the scale body assembly 11 so as to avoid the influence on the accuracy of measurement caused by contact of the scale body assembly 11. When the scale body assembly 11 is required to be opened to clean the bottom and the bottom frame device 20, the telescopic element 32 stretches, and the lifting frame 31 stretches into the part below the scale body assembly 11 to lift and drive the scale platform device 10 to rotate around the scale platform device 10. Thus, the lifting frame 31 includes an extended position to lift the scale body assembly 11 in the extended position of the telescopic member 32 and a retracted position away from the scale body assembly 11 in the retracted position of the telescopic member 32. Wherein, the leg assembly 13 is pressed against the bottom frame 21 in a contracted posture, and the buckle assembly 22 is clamped against the lifting frame 31. The support rod assembly 30 rotates to be separated from the weighing platform device 10, and the weighing platform device 10 is erected on the same part of the bottom frame device 20 so as to maintain the installation repeatability and the metering accuracy of the weighing platform device 10 and avoid repeated correction of the weighing platform device 10.

The bottom frame device 20 is matched with the weighing platform device 10, and the support rod assembly 30 can support the weighing platform device 10 to rotate away from the bottom frame device 20 so as to flush the surfaces of the weighing platform device 10 and the bottom frame device 20 thoroughly. The buckle assembly 22 can lock the support rod assembly 30 to avoid the problem that the support rod assembly 30 touches the weighing platform device 10 to cause weighing distortion when the weighing platform device 10 is in a use state.

Preferably, the lifting frames 31 are symmetrically distributed on the bottom frame 21, and the two lifting frames 31 can jointly lift the weighing platform device 10, so that the whole body can be stably opened. The lifting frames 31 are symmetrically arranged, and can keep the balance rotation of the weighing platform device 10, so that the resetting effect is good.

In an alternative embodiment, the lifting frame 31 includes a swivel arm 311 and a torque arm 312 pivotally connected to the swivel arm 311, the torque arm 312 extending beyond the upper surface of the swivel arm 311, and the telescoping member 32 is hingedly connected to the torque arm 312. The torque arm 312 protrudes from the upper surface of the swivel arm 311 to form a fulcrum structure. The three hinge points of the two ends of the telescopic element 32 and the hinge point of the rotary arm 311 and the bottom frame 21 are distributed in a triangular shape, so that the telescopic element 32 adjusts the rotation angle of the weighing platform device 10 in a telescopic state. Optionally, the torque arm 312 includes a first force arm 3121 and a second force arm 3122 that are disposed in an intersecting manner, and the ends of the first force arm 3121 and the second force arm 3122 are welded to the rotating arm 311 to form a triangle structure, so as to improve the structural stability of the torque arm 312 under the pushing of the telescopic element 32. Alternatively, the torque arm 312 is configured as an arc-shaped crank arm, both ends of which are fixed to the rotating arm 311. The telescoping member 32 is hingedly connected to the midpoint of the arcuate crank arm to form a transfer support structure.

As shown in fig. 1 to 4, the rotation arm 311 is parallel to the edge of the scale body assembly 11 and a part of the rotation arm 311 protrudes below the scale body assembly 11, and a part of the rotation arm 311 protruding below the scale body assembly 11 is used for lifting the scale body assembly 11. Optionally, the swivel arm 311 is parallel to the side rail 111 to form a parallel lifting structure.

In an alternative embodiment, the swivel arm 311 includes a connection plate 3113, at least one lower lift plate 3111 and an upper limit plate 3112 partially bent and protruded from both sides of the connection plate 3113, and an edge of the scale body assembly 11 is located between the lower lift plate 3111 and the upper limit plate 3112. The connection plate 3113 is parallel to the side beam 111 and is disposed at a distance from the side beam 111. Optionally, the upper limiting plate 3112, the lower lifting plate 3111 and the connecting plate 3113 are configured as a unitary structure, where the upper limiting plate 3112 and the lower lifting plate 3111 are respectively bending portions of the connecting plate 3113. Optionally, the lower lift plate 3111 avoids the sensor assembly 12. Preferably, the upper limiting plate 3112 is a bending plate detachably fixed to the connecting plate 3113, and the upper limiting plate 3112 is independently disposed, thereby forming a detachable structure, and facilitating adjustment of the limiting area of the rocker arm 311 to the side beam 111.

In an embodiment, the bottom frame device 20 includes a first side frame 211, a front frame 214, a second side frame 212, and a rear frame 213 that are fixedly connected, and the second side frame 212 is disposed opposite to the first side frame 211. The first side frame 211, the front frame 214, the second side frame 212 and the rear frame 213 are welded together to form an integral frame structure, and the leg assembly 13 is erected on the first side frame 211 and the second side frame 212. The front frame 214 and the rear frame 213 are tensioned and keep the shape and position of the first side frame 211 and the second side frame 212 stable, and the lifting frame 31 is correspondingly hinged to the first side frame 211 and the second side frame 212 to transmit the acting force to the bottom frame 21.

The lower lifting plate 3111 is located below the scale body assembly 11, and when the scale body assembly 11 needs to be rotated and unfolded, the lower lifting plate 3111 moves upwards to fit the scale body assembly 11. Since the scale body assembly 11 cannot touch the bottom frame device 20 and the supporting rod assembly 30 during weighing, a movable gap exists between the scale body assembly 11 and the bottom frame device 20 correspondingly. The scale body assembly 11 moves toward the rear frame 213 as the inclination angle increases, i.e., the scale body assembly 11 moves toward the rear frame 213 in the unfolded posture.

As shown in fig. 3 to 5, to define the sliding distance of the scale body assembly 11, in an alternative embodiment, the bottom frame device 20 further includes a top bead assembly 23 mounted to the rear frame 213, and the top bead assembly 23 protrudes toward the scale body assembly 11. The top bead assembly 23 is used for abutting against the edge of the scale body assembly 11, so as to avoid the scale body assembly 11 from abutting against the rear frame 213. Preferably, the end of the top bead assembly 23 is configured as a spherical surface so that the scale body assembly 11 can be smoothly separated from the top bead assembly 23 in the retracted posture.

Optionally, the top bead assembly 23 includes a bolt assembly 231 mounted to the rear frame 213 and a ball nut 232 mounted to an end of the bolt assembly 231, the ball nut 232 being configured to abut the scale body assembly 11. Optionally, the top bead assembly 23 is mounted to the rear frame 213 and disposed opposite to the end of the side beam 111, and the end of the side beam 111 is closed and correspondingly abuts against and supports the top bead assembly 23.

To define the sliding distance of the scale body assembly 11, in another alternative embodiment, the edge beam 111 is mounted with a limit post protruding toward the bottom of the scale body assembly 11. The lower lifting plate 3111 is provided with a supporting portion such as a supporting edge or a supporting groove adapted to the limiting boss, and in the unfolded posture, the supporting portion is used for abutting against the limiting boss so as to prevent the scale body assembly 11 from moving toward the rear frame 213. The side rail 111 is provided with a support portion that does not require additional structure and requires little structural modification.

In the retracted position, the bottom frame device 20 is required to guide the weighing platform device 10 to automatically reset. Optionally, the bottom frame device 20 further includes four limiting rings 217 fixedly distributed on the first side frame 211 and the second side frame 212, and the positions of the limiting rings 217 correspond to the leg assemblies 13. The limiting ring 217 has a tubular structure, and the limiting ring 217 is welded and fixed on the bottom frame 21 to form a positioning structure. The leg assemblies 13 are defined in the annular space of the stop collar 217, thereby defining the mounting position of the weighing platform assembly 10, and the weighing platform assembly 10 is effective in repetition.

Further, the opening of the stop collar 217 is provided with a chamfer 218, and the chamfer 218 may be configured as a conical surface or an arc-shaped curved surface. When the lifting frame 31 changes from the unfolding posture to the shrinking posture, the leg assemblies 13 slide along the chamfers 218, so that the leg assemblies 13 are buckled into the appointed area of the limiting rings 217, and the automatic alignment effect is good.

In one embodiment, the latch assembly 22 includes a latch plate 222 rotatably connected to the bottom frame 21 and a latch handle 221 fixed to the latch plate 222, and the latch plate 222 is provided with a latch groove 223. The lifting frame 31 is provided with a buckling column 313 adapting to the clamping groove 223, and the buckling plate 222 is buckled on the buckling column 313 when in a contracted posture. The buckle assembly 22 is used for clamping and limiting the lifting frame 31, so that the telescopic element 32 is prevented from pushing the lifting frame 31 to be automatically unfolded. The latch plate 222 is hinged to the first side frame 211, and the latch handle 221 can drive the latch plate 222 to rotate. The fastening post 313 is fixed to the rotating arm 311 and is located in the rotation direction of the fastening groove 223. The latch plate 222 is fastened to the latch post 313, thereby defining the rotating arm 311. Preferably, the first side frame 211 is fixedly provided with an adjusting plate 215, and the buckle plate 222 and the telescopic element 32 are hinged to the adjusting plate 215 at intervals so as to adjust the rotation position.

As shown in fig. 1 to 3, in an embodiment, the self-opening ultra-low platform balance further includes a ramp assembly 40, and the ramp assembly 40 is configured with an inclined ramp plate 41. The slope guiding assembly 40 is used for guiding materials to conveniently enter and exit the weighing platform device 10, and the slope guiding plate 41 is of an inclined structure, so that carrying tools such as a forklift can conveniently enter and exit the weighing platform device 10. The height of the tail end of the slope guiding plate 41 is larger than or equal to the table top height of the scale body assembly 11, so that carrying tools such as a forklift and the like can be prevented from impacting the edge of the scale platform device 10, and the metering accuracy of the scale platform device 10 is prevented from being influenced.

The ramp assembly 40 is connected to the bottom frame 21 to maintain the relative position of the two. Alternatively, the ramp assembly 40 is hingedly connected to the bottom frame 21 such that the ramp assembly 40 can be connected to the bottom frame 21 and the ramp assembly 40 can be connected to the scale platform assembly 10 in a reversible manner. Optionally, the two side plates of the ramp assembly 40 are hinged to the bottom frame 21 by pins. Optionally, the slope guiding component 40 is connected with the bottom frame 21 through pin shaft plug-in fit, a sleeve 216 is arranged on the bottom frame 21, two sides of the slope guiding component 40 are provided with protruding pin shafts, and the pin shafts are connected with the sleeve 216 in plug-in fit to form plug-in fit.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. A self-opening ultralow platform scale, comprising:

2. The self-opening ultralow platform balance according to claim 1, wherein the lifting frames are symmetrically distributed on the bottom frame.

3. The self-opening ultralow platform balance according to claim 2, wherein the lifting frame comprises a rotating arm and a torque arm connected to the rotating arm in a bending manner, the rotating arm is parallel to the edge of the balance body assembly and the local protrusion of the rotating arm extends into the lower part of the balance body assembly, the torque arm extends beyond the upper surface of the rotating arm, and the telescopic element is hinged with the torque arm.

4. A self-opening ultralow platform balance according to claim 3, wherein the swivel arm comprises a connecting plate, at least one lower lifting plate and an upper limiting plate which are partially bent and protruded from two sides of the connecting plate, and the edge of the balance body assembly is located between the lower lifting plate and the upper limiting plate.

5. The self-opening ultralow platform scale according to claim 1, wherein the bottom frame device comprises a first side frame, a front frame, a second side frame and a rear frame which are fixedly connected, the second side frame is opposite to the first side frame, the lifting frame is correspondingly hinged to the first side frame and the second side frame, and the scale body assembly moves towards the rear frame direction in the unfolded posture.

6. The self-opening ultralow platform balance according to claim 5, wherein the bottom frame device further comprises a top bead assembly mounted on the rear frame, and the top bead assembly protrudes toward the balance body assembly.

7. The self-opening ultralow platform balance according to claim 5, wherein the bottom frame device further comprises four limiting rings fixedly distributed on the first side frame and the second side frame, the limiting rings are located corresponding to the leg assemblies, and the openings of the limiting rings are provided with chamfers.

8. The self-opening ultralow platform balance according to claim 1, wherein the buckle assembly comprises a buckle plate rotatably connected to the bottom frame and a buckle handle fixed to the buckle plate, the buckle plate is provided with a buckle groove, the lifting frame is provided with a buckle column adapting to the buckle groove, and the buckle plate is buckled to the buckle column in the contracted state.

9. The self-opening ultralow platform balance according to any one of claims 1-8, further comprising a ramp assembly provided with an inclined ramp plate, the end height of the ramp plate being greater than or equal to the deck height of the balance body assembly.

10. The self-opening ultralow platform balance according to claim 9, wherein the ramp assembly is hinged to the bottom frame; or, the slope guiding component is connected with the bottom frame in a plug-in fit manner through a pin shaft.