Automatic weighing type liquid tank

Abstract

The invention relates to the technical field of liquid storage tanks, and provides an automatic weighing type liquid tank which comprises a multifunctional bearing mechanism, and the multifunctional bearing mechanism comprises a buffering mechanism and a transmission frame. In the process of storing or discharging liquid into the tank body, the lifting supporting table correspondingly ascends and descends, the lifting supporting table acts on the buffer mechanism through the transmission frame, so that the guide sliding block drives the pointer strip to push, and the pointer strip moves on the surface of the scale plate and passes through the scale position, pointed by the pointer strip, on the outer wall of the scale plate. Therefore, by means of the structural design, the total mass of the lifting supporting table in the standing stable state and the liquid storage tank assembly placed on the upper side of the lifting supporting table can be measured. When the whole device is in a moving state, in the bumping process, the buffering mechanism is matched with the transmission frame, the good elastic performance of the first reset spring and the second reset spring can be utilized, and the influence of vibration on the liquid storage tank assembly can be well buffered and counteracted.

Description

Technical Field

[0001] The invention relates to the technical field of liquid storage tanks, and in particular to an automatic weighing liquid tank. Background Art

[0002] A liquid storage tank is a container used for storing objects, especially chemicals, which often need to be equipped with a liquid storage tank made of corrosion-resistant plastic material. After searching, the existing patent (Announcement No.: CN115247752B) discloses a liquid storage tank shock absorption control device that combines collision energy dissipation and anti-sway and sway reduction, including a circular steel plate, a mass block, a steel cable, and a buffer block. A circular steel plate with a diameter smaller than the liquid storage tank is provided in the upper part of the liquid storage tank cavity, and the circular steel plate is connected to the top cover of the liquid storage tank by a number of steel cables: the mass blocks are arranged at the same radial intervals along the circular steel plate. Based on the principle of a tuned mass damper, the invention suspends the steel plate on the top cover by steel cables, and at the same time attaches mass blocks to the steel plate. Under the action of an earthquake, the steel plate and the mass block play a shock-absorbing role by swinging, and has the characteristics of integrating collision shock absorption and sway reduction. In addition, after searching, the existing patent (publication number: CN111101599B) discloses a dual-function shock-absorbing support structure for a liquid storage tank, including multiple columns made of steel sections, the bottom end of each column is welded to the bottom end of the liquid storage tank, and the support structure also includes a pedestal and an energy-absorbing component. The number of the pedestal and the energy-absorbing component is consistent with the number of the columns, and one end of each energy-absorbing component is respectively connected to the outer side surface of the corresponding column. This patent can reduce the seismic response of the supported liquid storage tank structure and improve its seismic resistance.

[0003] However, in the above scheme, although reliable buffering performance is provided for the liquid storage tank, the limitations are increased and it cannot be well applied to small liquid storage tanks, especially during the transportation of the liquid storage tank, the liquid inside it will shake, which will not only produce impact force and have a certain impact on the overall strength of the liquid storage tank, thereby affecting the service life of the liquid storage tank, but also may cause the temperature and pressure of the liquid in the tank to increase, resulting in explosion. In addition, in the process of storing or discharging liquid inside the liquid storage tank, the overall quality of the liquid storage tank cannot be controlled, and it is not convenient to adjust the working height of the liquid storage tank according to work needs, and the functionality is insufficient.

[0004] In view of this, the present invention relates to the technical field of liquid storage tanks, and specifically, to an automatic weighing liquid tank. Summary of the invention

[0005] The present invention proposes an automatic weighing liquid tank, which solves the problems in the related art that the existing liquid storage tanks have poor buffering performance when moving, insufficient safety, cannot control the overall quality of the liquid storage tank, are not convenient to adjust the working height of the liquid storage tank according to work needs, and have insufficient functionality.

[0006] The technical solution of the present invention is as follows: an automatic weighing liquid tank, comprising: a bottom platform and a lifting platform arranged on the upper side of the bottom platform, a liquid storage tank assembly is arranged on the upper side of the lifting platform, and a multifunctional supporting mechanism is arranged between the lifting platform and the bottom platform; The multifunctional supporting mechanism includes four buffer mechanisms distributed in a rectangular shape on the upper side of the bottom platform, a transmission frame is provided on one side of each buffer mechanism, and the four transmission frames are grouped in twos, and a push plate is connected between each group of transmission frames. Two electric hydraulic devices are provided above the center of the bottom platform for pushing the push plate, so that the transmission frame can be driven by the buffer mechanism, and then the height of the lifting platform can be adjusted; A scale plate fixed to the top of the bottom platform is arranged between the two adjacent buffer mechanisms on the left and right, and a pointer bar is arranged on each transmission frame. With the cooperation of the pointer bar and the scale plate, the liquid storage tank assembly located on the upper side of the lifting platform can be weighed.

[0007] Preferably, the buffer mechanism includes an L-shaped seat fixedly connected to the top of the bottom platform, a strip block is fixedly connected to the inner side of the L-shaped seat, slideways are symmetrically provided on the outer wall of the strip block, transverse axes are fixedly connected inside the two slides, a guide slider is slidingly sleeved on the outer wall of the strip block, the transverse axis slides through the guide slider, a second return spring is connected between the guide slider and one end of the slide, and the second return spring is sleeved on the outside of the transverse axis.

[0008] Preferably, the buffer mechanism also includes a guide block fixedly connected to the top of the guide slider, a guide shaft slidingly penetrates the inside of the guide block, a first return spring is connected between the guide block and the L-shaped seat, and the first return spring is sleeved on the outside of the guide shaft.

[0009] Preferably, a fixed plate is fixedly connected between two adjacent front and rear L-shaped seats, two guide sliders are fixedly connected at both ends of the push plate, and the hydraulic rod of the electric hydraulic device slides through the interior of the fixed plate.

[0010] Preferably, the pointer bar is fixedly connected to the side wall of the guide slider, and the pointer bar is arranged parallel to the scale plate.

[0011] Preferably, the transmission frame includes two first connecting rods hinged on the outer wall of the guide slider, a support block is hinged between the tops of the two first connecting rods, the support block is fixed to the lifting support platform by bolts, a second connecting rod is hinged in the middle of the first connecting rod, and two fixed seats are symmetrically hinged at the bottom of the second connecting rod, and the fixed seat is fixed to the top of the bottom platform by bolts.

[0012] Preferably, a mounting plate is fixedly connected between the two fixing plates, and the electric hydraulic device is fixedly mounted on the top of the mounting plate.

[0013] Preferably, the liquid storage tank assembly includes a tank body and a protective cylinder sleeved on the outside of the tank body, the tank body is provided with a plurality of buffer grooves, a connecting rod is fixedly connected to the inside of the buffer groove, a moving block is slidably sleeved on the outer wall of the connecting rod, the moving block is slidably fitted and connected to the buffer groove, and the moving block is fixedly connected to the inner wall of the protective cylinder, two buffer springs are symmetrically sleeved on the outside of the connecting rod, and both ends of the buffer spring are respectively fixedly connected to the moving block and the end of the buffer groove.

[0014] Preferably, two wheel tracks are symmetrically fixed to the outer wall of the protective tube, and four supporting wheels distributed in a rectangular shape are hinged on the top of the lifting platform for supporting the wheel tracks.

[0015] Preferably, the bottom platform is arranged parallel to the lifting platform, and brake wheels are arranged at the four corners of the bottom of the bottom platform for moving and transporting the bottom platform.

[0016] The working principle and beneficial effects of the present invention are: In the present invention, a multifunctional supporting mechanism is arranged between the lifting platform and the bottom platform, and the multifunctional supporting mechanism includes a buffer mechanism and a transmission frame. A scale plate fixed to the top of the bottom platform is arranged between two adjacent buffer mechanisms on the left and right, and a pointer bar is arranged on each transmission frame. In the process of storing or discharging liquid into the tank body, the overall mass of the lifting platform and the liquid storage tank assembly placed on the upper side of the lifting platform will increase or decrease accordingly. At this time, the lifting platform will be lifted and lowered accordingly. The lifting platform acts on the buffer mechanism through the transmission frame, so that the guide slider drives the pointer bar to push, so that the pointer bar moves on the surface of the scale plate, and passes through the position of the scale on the outer wall of the scale plate pointed by the pointer bar. Therefore, the structural design of the present invention can measure the overall mass of the lifting platform in a static stable state and the liquid storage tank assembly placed on the upper side of the lifting platform. When the entire device is in motion, during the bumping process, the cooperation of the buffer mechanism and the transmission frame can utilize the good elastic properties of the first return spring and the second return spring, and can also well buffer and offset the impact of vibration on the liquid storage tank assembly; In the present invention, four transmission frames are grouped in pairs, and push plates are connected between each group of transmission frames. Two electric hydraulics are arranged above the center of the bottom platform. When the push plates are pushed by the electric hydraulics, the height of the lifting platform can be adjusted upward with the cooperation of the buffer mechanism and the transmission frame. After the work is completed, the electric hydraulic controls the hydraulic rod to retract, and under the action of the first reset spring and the second reset spring on the buffer mechanism, the guide slider moves and resets, so that the first connecting rod moves down and resets the height of the lifting platform through the support block. The structure is simple and the operation is convenient. The clever design makes the liquid storage tank assembly have the functions of buffering, lifting and self-weighing, and has a high use value. In the present invention, when the entire device is in a moving state, when the solution inside the tank body impacts the tank body and other structures or when the end of the tank body accidentally collides, the protective tube can protect the outside of the tank body to reduce the harm when the tank body bursts, and the tank body can slide relatively inside the protective tube, so that the moving block slides on the outer wall of the connecting rod, causing the buffer spring to deform, thereby further providing good buffering performance for the liquid storage tank assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the plan structure of an automatic weighing liquid tank proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of an automatic weighing liquid tank proposed by the present invention; Figure 3 A schematic diagram of the structure of the multifunctional supporting mechanism proposed by the present invention; Figure 4 This is a partial cross-sectional structural schematic diagram of the multifunctional supporting mechanism proposed by the present invention; Figure 5 A schematic diagram of the structure of the transmission frame and the buffer mechanism proposed in the present invention; Figure 6 for Figure 4 The enlarged structural diagram at A in the middle; Figure 7 A partial cross-sectional structural schematic diagram of a liquid storage tank assembly proposed by the present invention; In the figure: 1. liquid storage tank assembly; 11. tank body; 12. protective tube; 13. wheel track; 14. buffer groove; 15. connecting rod; 16. moving block; 17. buffer spring; 2. lifting support platform; 3. bottom platform; 4. brake wheel; 5. multifunctional supporting mechanism; 51. transmission frame; 511. supporting block; 512. first connecting rod; 513. fixed seat; 514. second connecting rod; 52. scale plate; 53. electric hydraulic device; 54. fixed plate; 55. push plate; 56. buffer mechanism; 561. L-shaped seat; 562. strip block; 563. slideway; 564. horizontal axis; 565. second return spring; 566. guide shaft; 567. guide block; 568. first return spring; 569. guide slider; 57. pointer bar; 58. mounting plate; 6. supporting wheel. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] See also Figure 1-Figure 5 An automatic weighing liquid tank includes: a bottom platform 3 and a lifting platform 2 arranged on the upper side of the bottom platform 3, the bottom platform 3 is arranged parallel to the lifting platform 2, and brake wheels 4 are arranged at the four corners of the bottom of the bottom platform 3 for moving the bottom platform 3. A liquid storage tank assembly 1 is arranged on the upper side of the lifting platform 2, and a multifunctional supporting mechanism 5 is arranged between the lifting platform 2 and the bottom platform 3.

[0021] Among them, the multifunctional supporting mechanism 5 includes four buffer mechanisms 56 distributed in a rectangular shape on the upper side of the bottom platform 3, and a transmission frame 51 is arranged on one side of each buffer mechanism 56. The four transmission frames 51 are grouped in pairs, and a push plate 55 is connected between each group of transmission frames 51. Two electric hydraulic devices 53 are arranged above the center of the bottom platform 3 for pushing the push plate 55, so that the transmission frame 51 can be driven through the buffer mechanism 56, and then the height of the lifting platform 2 can be adjusted.

[0022] Furthermore, the buffer mechanism 56 includes an L-shaped seat 561 fixed to the top of the bottom platform 3, a strip block 562 fixed to the inside of the L-shaped seat 561, a slideway 563 symmetrically provided on the outer wall of the strip block 562, a transverse axis 564 fixed to the inside of the two slideways 563, a guide slider 569 slidably sleeved on the outer wall of the strip block 562, the transverse axis 564 slides through the inside of the guide slider 569, a second return spring 565 is connected between the guide slider 569 and one end of the slideway 563, and the second return spring 565 is sleeved on the outside of the transverse axis 564. The buffer mechanism 56 also includes a guide block 567 fixed to the top of the guide slider 569, a guide shaft 566 slides through the inside of the guide block 567, a first return spring 568 is connected between the guide block 567 and the L-shaped seat 561, and the first return spring 568 is sleeved on the outside of the guide shaft 566. A fixed plate 54 is fixedly connected between two adjacent L-shaped seats 561 , two guide slide blocks 569 are fixedly connected at both ends of the push plate 55 , and the hydraulic rod of the electric hydraulic device 53 slides through the interior of the fixed plate 54 .

[0023] Furthermore, the transmission frame 51 includes two first link rods 512 hinged on the outer wall of the guide slider 569, a support block 511 is hinged between the tops of the two first link rods 512, the support block 511 is fixed to the lifting platform 2 by bolts, a second link rod 514 is hinged in the middle of the first link rod 512, two fixing seats 513 are symmetrically hinged at the bottom of the second link rod 514, and the fixing seats 513 are fixed to the top of the bottom platform 3 by bolts. A mounting plate 58 is fixedly connected between the two fixing plates 54, and the electric hydraulic device 53 is fixedly installed on the top of the mounting plate 58.

[0024] In this embodiment, when the entire device needs to be moved, that is, when the entire device is in motion, during a bumpy process, the lifting platform 2 presses down or pulls up the first connecting rod 512 through the supporting block 511, so that the angle between the second connecting rod 514 and the first connecting rod 512 changes, so that the first connecting rod 512 pushes and pulls the guide slider 569, so that the guide slider 569 slides on the strip block 562, and the guide block 567 slides on the outer wall of the guide shaft 566 to generate damping. At the same time, the good elastic properties of the first return spring 568 and the second return spring 565 can be used to well buffer and offset the impact of vibration on the liquid storage tank assembly 1.

[0025] In this embodiment, in the actual working process, when the working height of the liquid storage tank assembly 1 needs to be adjusted, the power is turned on, and the two electric hydraulic devices 53 are started simultaneously through the external control device. The electric hydraulic device 53 pushes the push plate 55 by extending its hydraulic rod, so that the push plate 55 is away from the fixed plate 54, and the push plate 55 pushes the two guide sliders 569 synchronously. The guide sliders 569 push the first link rod 512 forward, so that the first link rod 512 can push up the lifting platform 2 through the support block 511, so that the height of the liquid storage tank assembly 1 can be adjusted upward. After the work is completed, the electric hydraulic device 53 controls the hydraulic rod to be retracted, and under the action of the first reset spring 568 and the second reset spring 565, the guide slider 569 moves and resets, so that the first link rod 512 moves down and resets the height of the lifting platform 2 through the support block 511. Example

[0026] See also Figure 2 , Figure 4 , Figure 5 as well as Figure 6 , an automatic weighing liquid tank, including all the contents of Example 1. In addition, a scale plate 52 fixedly connected to the top of the bottom platform 3 is arranged between the two adjacent buffer mechanisms 56 on the left and right, and a pointer bar 57 is arranged on each transmission frame 51. With the cooperation of the pointer bar 57 and the scale plate 52, the liquid storage tank assembly 1 located on the upper side of the lifting platform 2 can be weighed.

[0027] Furthermore, the pointer bar 57 is fixed to the side wall of the guide slider 569 , and the pointer bar 57 is arranged parallel to the scale plate 52 .

[0028] In this embodiment, during the process of storing or discharging liquid into the tank body 11, the overall mass of the lifting platform 2 and the liquid storage tank assembly 1 placed on the upper side of the lifting platform 2 will increase or decrease accordingly. During this process, weighing work can be performed. Figure 2 and Figure 5When the total mass increases, the position of the lifting platform 2 moves downward. At this time, the hydraulic rod on the electric hydraulic device 53 does not interfere with the push plate 55. In the process of the lifting platform 2 moving downward, the support block 511 moves downward to press the first link 512, so that the second link 514 swings downward, so that the first link 512 pushes the guide slider 569 toward the fixed plate 54, compresses the first return spring 568 and the second return spring 565, so that the guide slider 569 drives the pointer bar 57 to move, so that the pointer bar 57 moves on the surface of the scale plate 52. By penetrating the position of the scale on the outer wall of the scale plate 52 pointed by the pointer bar 57, the total mass of the lifting platform 2 and the liquid storage tank assembly 1 placed on the upper side of the lifting platform 2 can be measured. It should be noted that before the device is put into weighing work, it is necessary to determine the relationship between the moving distance of the pointer bar 57 and the total mass. Specifically, the known weight is applied for calibration, and an object of known weight is applied to the lifting platform 2, and the movement variable of the pointer bar 57 is recorded, and the relationship between the movement variable and the weight is established, so as to draw the scale value on the outer wall of the scale plate 52. When the relationship between the movement variable and the weight is established, multiple measurements should be taken to obtain the average value if necessary to improve the accuracy. When an object of unknown weight is applied to the lifting platform 2, the specific mass can be obtained by observing the scale indicated by the pointer bar 57. Example

[0029] See also Figure 1 , Figure 2 as well as Figure 7 , an automatic weighing liquid tank, including all the contents of Example 2. In addition, the liquid storage tank assembly 1 includes a tank body 11 and a protective tube 12 sleeved on the outside of the tank body 11, the tank body 11 is provided with a plurality of buffer grooves 14, a connecting rod 15 is fixedly connected inside the buffer groove 14, a moving block 16 is slidably sleeved on the outer wall of the connecting rod 15, the moving block 16 is slidably fitted and connected with the buffer groove 14, and the moving block 16 is fixedly connected to the inner wall of the protective tube 12, two buffer springs 17 are symmetrically sleeved on the outside of the connecting rod 15, and the two ends of the buffer spring 17 are respectively fixedly connected to the moving block 16 and the end of the buffer groove 14.

[0030] Furthermore, two wheel tracks 13 are symmetrically fixed to the outer wall of the protective tube 12 , and four supporting wheels 6 distributed in a rectangular shape for supporting the wheel tracks 13 are hinged on the top of the lifting platform 2 .

[0031] In this embodiment, after the mass weighing is completed, when the entire device needs to be moved, that is, the entire device is in motion, during the bumping process, the lifting platform 2 presses down or pulls up the first connecting rod 512 through the supporting block 511, so that the angle between the second connecting rod 514 and the first connecting rod 512 changes, so that the first connecting rod 512 pushes and pulls the guide slider 569, so that the guide slider 569 slides on the bar block 562, and the guide block 567 slides on the outer wall of the guide shaft 566 to generate damping. At the same time, the good elastic properties of the first return spring 568 and the second return spring 565 can be used to well buffer and offset the impact of vibration on the liquid storage tank assembly 1.

[0032] Working principle and use process: During the process of storing or discharging liquid into the tank body 11, the overall mass of the lifting platform 2 and the liquid storage tank assembly 1 placed on the upper side of the lifting platform 2 will increase or decrease accordingly. During this process, weighing work can be performed. Figure 2 and Figure 5 When the total mass increases, the position of the lifting platform 2 moves downward. At this time, the hydraulic rod on the electric hydraulic device 53 does not interfere with the push plate 55. In the process of the lifting platform 2 moving downward, the support block 511 moves downward to press the first link 512, so that the second link 514 swings downward, so that the first link 512 pushes the guide slider 569 toward the fixed plate 54, compresses the first return spring 568 and the second return spring 565, so that the guide slider 569 drives the pointer bar 57 to move, so that the pointer bar 57 moves on the surface of the scale plate 52. By penetrating the position of the scale on the outer wall of the scale plate 52 pointed by the pointer bar 57, the total mass of the lifting platform 2 and the liquid storage tank assembly 1 placed on the upper side of the lifting platform 2 can be measured. It should be noted that before the device is put into weighing work, it is necessary to determine the relationship between the moving distance of the pointer bar 57 and the total mass. Specifically, the known weight is applied for calibration, and an object of known weight is applied to the lifting platform 2, and the movement variable of the pointer bar 57 is recorded, and the relationship between the movement variable and the weight is established, so as to draw the scale value on the outer wall of the scale plate 52. When the relationship between the movement variable and the weight is established, multiple measurements should be taken to obtain the average value if necessary to improve the accuracy. When an object of unknown weight is applied to the lifting platform 2, the specific mass can be obtained by observing the scale indicated by the pointer bar 57.

[0033] After the mass weighing is completed, when the entire device needs to be moved, that is, the entire device is in motion, during the bumping process, the lifting platform 2 presses down or pulls up the first connecting rod 512 through the supporting block 511, so that the angle between the second connecting rod 514 and the first connecting rod 512 changes, so that the first connecting rod 512 pushes and pulls the guide slider 569, so that the guide slider 569 slides on the bar block 562, and the guide block 567 slides on the outer wall of the guide shaft 566 to generate damping. At the same time, the good elastic properties of the first return spring 568 and the second return spring 565 can be used to well buffer and offset the impact of vibration on the liquid storage tank assembly 1.

[0034] In addition, when the entire device is in a moving state, when the solution inside the tank body 11 impacts the tank body 11 and other structures or when the end of the tank body 11 accidentally collides, the protective tube 12 can protect the outside of the tank body 11 to reduce the harm when the tank body 11 bursts, and the tank body 11 can slide relatively inside the protective tube 12, so that the moving block 16 slides on the outer wall of the connecting rod 15, causing the buffer spring 17 to deform, thereby further providing good buffering performance for the liquid storage tank assembly 1.

[0035] In the actual working process, when the working height of the liquid storage tank assembly 1 needs to be adjusted, the power is turned on, and the two electric hydraulics 53 are started simultaneously through the external control device. The electric hydraulics 53 push the push plate 55 by extending its hydraulic rod, so that the push plate 55 is away from the fixed plate 54, and the push plate 55 pushes the two guide sliders 569 synchronously. The guide sliders 569 push the first link rod 512 forward, so that the first link rod 512 can push up the lifting platform 2 through the support block 511, so as to adjust the height of the liquid storage tank assembly 1. After the work is completed, the electric hydraulics 53 controls the hydraulic rod to be retracted, and under the action of the first reset spring 568 and the second reset spring 565, the guide slider 569 moves and resets, so that the first link rod 512 moves down and resets the height of the lifting platform 2 through the support block 511.

[0036] It is worth noting that the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic weighing liquid tank, comprising: A bottom platform (3) and a lifting platform (2) arranged on the upper side of the bottom platform (3), characterized in that a liquid storage tank assembly (1) is arranged on the upper side of the lifting platform (2), and a multifunctional supporting mechanism (5) is arranged between the lifting platform (2) and the bottom platform (3); The multifunctional supporting mechanism (5) comprises four buffer mechanisms (56) distributed in a rectangular shape on the upper side of the bottom platform (3), a transmission frame (51) is provided on one side of each buffer mechanism (56), the four transmission frames (51) are arranged in groups of two, a push plate (55) is connected between each group of transmission frames (51), and two electric hydraulic devices (53) are provided above the center of the bottom platform (3) for pushing the push plate (55), so that the transmission frame (51) can be driven by the buffer mechanism (56), thereby adjusting the height of the lifting platform (2); A scale plate (52) fixedly connected to the top of the bottom platform (3) is provided between two adjacent buffer mechanisms (56) on the left and right, and a pointer bar (57) is provided on each transmission frame (51). With the cooperation of the pointer bar (57) and the scale plate (52), the liquid storage tank assembly (1) located on the upper side of the lifting platform (2) can be weighed.

2. The automatic weighing liquid tank according to claim 1, characterized in that: The buffer mechanism (56) comprises an L-shaped seat (561) fixedly connected to the top of the bottom platform (3), a strip block (562) fixedly connected to the inner side of the L-shaped seat (561), a slideway (563) symmetrically provided on the outer wall of the strip block (562), a transverse axis (564) fixedly connected inside the two slideways (563), a guide slider (569) slidably sleeved on the outer wall of the strip block (562), the transverse axis (564) slidably passing through the guide slider (569), a second return spring (565) connected between the guide slider (569) and one end of the slideway (563), the second return spring (565) sleeved on the outer side of the transverse axis (564).

3. The automatic weighing liquid tank according to claim 2, characterized in that: The buffer mechanism (56) further comprises a guide block (567) fixedly connected to the top end of the guide slider (569); a guide shaft (566) is slidably penetrated inside the guide block (567); a first return spring (568) is connected between the guide block (567) and the L-shaped seat (561); and the first return spring (568) is sleeved on the outside of the guide shaft (566).

4. The automatic weighing liquid tank according to claim 3, characterized in that: A fixed plate (54) is fixedly connected between two adjacent front and rear L-shaped seats (561), two guide slide blocks (569) are fixedly connected at both ends of the push plate (55), and a hydraulic rod of the electric hydraulic device (53) slides through the interior of the fixed plate (54).

5. The automatic weighing liquid tank according to claim 4, characterized in that: The pointer bar (57) is fixedly connected to the side wall of the guide slider (569), and the pointer bar (57) is arranged parallel to the scale plate (52).

6. The automatic weighing liquid tank according to claim 5, characterized in that: The transmission frame (51) comprises two first connecting rods (512) hinged on the outer wall of the guide slider (569); a support block (511) is hinged between the tops of the two first connecting rods (512); the support block (511) is fixed to the lifting support platform (2) by bolts; a second connecting rod (514) is hinged at the middle of the first connecting rod (512); two fixing seats (513) are symmetrically hinged at the bottom of the second connecting rod (514); and the fixing seats (513) are fixed to the top of the bottom platform (3) by bolts.

7. The automatic weighing liquid tank according to claim 6, characterized in that: A mounting plate (58) is fixedly connected between the two fixing plates (54), and the electric hydraulic device (53) is fixedly mounted on the top of the mounting plate (58).

8. The automatic weighing liquid tank according to claim 1, characterized in that: The liquid storage tank assembly (1) comprises a tank body (11) and a protective tube (12) sleeved on the outside of the tank body (11); the tank body (11) is provided with a plurality of buffer grooves (14); a connecting rod (15) is fixedly connected inside the buffer groove (14); a moving block (16) is slidably sleeved on the outer wall of the connecting rod (15); the moving block (16) is slidably fitted and connected to the buffer groove (14), and the moving block (16) is fixedly connected to the inner wall of the protective tube (12); two buffer springs (17) are symmetrically sleeved on the outer side of the connecting rod (15); two ends of the buffer spring (17) are respectively fixedly connected to the moving block (16) and the end of the buffer groove (14).

9. The automatic weighing liquid tank according to claim 8, characterized in that: The outer wall of the protective tube (12) is symmetrically fixedly connected to two wheel tracks (13), and the top of the lifting platform (2) is hingedly connected to four supporting wheels (6) distributed in a rectangular shape for supporting the wheel tracks (13).

10. The automatic weighing liquid tank according to claim 1, characterized in that: The bottom platform (3) is arranged parallel to the lifting platform (2), and brake wheels (4) are arranged at the four corners of the bottom of the bottom platform (3) for moving and transporting the bottom platform (3).

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