An automatic horizontal weighing device for gas cylinders

Abstract

An automatic horizontal weighing device for gas cylinders includes: a frame body, a base, a support platform, a support platform lifting mechanism, a gas cylinder support, and a gas cylinder support rotating mechanism. The base is located at the bottom of the frame body, and the interior of the base is used to hold a balance. The support platform lifting mechanism, support platform, gas cylinder support, and gas cylinder support rotating mechanism are sequentially arranged above the base. The gas cylinder support is an L-shaped plate that is initially upright. The gas cylinder is moved onto the L-shaped plate, and the rotating mechanism lowers the L-shaped plate along with the gas cylinder onto the balance for weighing. After weighing, the plate is upright again. This invention can quickly and accurately complete the weighing of gas cylinders, greatly reducing the weighing time and effectively improving production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas cylinder weighing devices. Specifically, it refers to an automatic horizontal gas cylinder weighing device. Background Technology

[0002] Standard gases are gases precisely mixed with their components in quantitative amounts. The preparation of standard gases requires transferring different gas components to a gas cylinder by specific masses. Due to the diffusivity of gases, to accurately measure the transferred mass of each component, the initial mass of the gas cylinder is usually weighed precisely first, then the gas transfer operation is performed, and finally the gas cylinder mass is weighed again. The change in the gas cylinder's mass is the actual mass of the gas transferred.

[0003] For large gas cylinders, such as the commonly available 40L cylinders, their weight is approximately 50kg and their height is close to 1.5m. When preparing standard gas cylinders, a trolley is typically used to move them to an electronic balance. This electronic balance needs to be pre-buried underground, ensuring its platform is level with the ground, before the cylinder is moved onto the balance. The mass of the transferred gas is determined by weighing the cylinder twice. However, moving the cylinder to the electronic balance may damage it. Another option is to fill the gas directly on the electronic balance and determine the gas mass by the difference in mass before and after filling. However, because the filling pipeline is always connected to the cylinder, the obtained mass data is not accurate enough.

[0004] In industrial production processes, the weighing of large gas cylinders is crucial. However, the commonly used crane lifting method has many drawbacks. Due to the large size, cylindrical shape, and high center of gravity of the large gas cylinders, despite appropriate protective measures, the lifting and movement must still be carried out extremely slowly to prevent them from tipping over and causing accidents. This undoubtedly places a heavy burden on on-site operators and constantly threatens the safety of the production site. Furthermore, the inefficiency of lifting and moving the cylinders can affect the gas filling schedule to some extent. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an automatic horizontal weighing device for gas cylinders, which can quickly and accurately complete the weighing work, greatly shorten the weighing time, and effectively improve the efficiency of production and preparation.

[0006] This utility model is implemented as follows:

[0007] An automatic horizontal weighing device for gas cylinders includes: a frame body, a base, a support platform, a support platform lifting mechanism, a gas cylinder support platform, and a gas cylinder support platform rotating mechanism.

[0008] The base includes: two parallel tracks located at the bottom of the frame body, each track having a slide rail groove, a support platform lifting mechanism on the slide rail groove, two fixed blocks between the two tracks, a support block above each fixed block, each fixed block having a slide rail inside to allow the support block to move up and down, the top of each support block being connected to the bottom of the support platform, and the position between the two fixed blocks being used to place a balance scale;

[0009] The support platform is a flat plate with a first hollow structure in the middle and four pillars at the bottom. Each pillar has a roller at its bottom and a first long bar hole at the left end of the flat plate.

[0010] The support platform lifting mechanism includes: a U-shaped movable frame located on the two slide rail grooves, with two trapezoidal grooves on each side of the U-shaped movable frame matching the four rollers, and a first motor connected to the middle of the U-shaped movable frame via a first drive shaft for driving the U-shaped movable frame to move on the slide rail grooves;

[0011] The gas cylinder support is an L-shaped flat plate, comprising a vertical section and a horizontal section. The horizontal section of the L-shaped flat plate has a second hollow structure in the middle. Fixing members are provided on both sides near the left end of the vertical section. A first long bar is fixedly connected between the two fixing members. The first long bar is located at the bottom of the horizontal section and passes through the hole of the first long bar. A second long bar hole is provided at the right end of the horizontal section.

[0012] The gas cylinder support rotating mechanism includes: a second motor, a transmission mechanism, two front rollers, two rear rollers, two vertical moving rods, and two vertical sliding rods; the second motor is connected to the two front rollers through the transmission mechanism, and one end of each of the two rear rollers is respectively sleeved inside the two front rollers. The two rear rollers have external threads and pass through the middle of the two vertical moving rods, and are connected to their internal threads. The upper and lower parts of the vertical moving rods are respectively provided with rollers and are located in the grooves of two horizontal rods on the frame body; one end of each of the two vertical sliding rods is slidably connected to the vertical moving rods, and the other end is respectively connected to one end of a second long rod, which passes through the second long rod hole of the gas cylinder support;

[0013] The transmission mechanism is a synchronous belt;

[0014] Above the horizontal section of the gas cylinder support platform is an iron mesh adapted to the outer surface of the gas cylinder, and the iron mesh is also equipped with an arc-shaped rod to prevent the gas cylinder from tipping over.

[0015] Furthermore, an auxiliary support block adapted to the outer surface of the gas cylinder is provided above the balance.

[0016] The advantages of this invention are as follows: It greatly simplifies the operation process. Operators only need to smoothly approach and move the large volume bottle to the designated position on the electronic balance, and the device will automatically start the weighing program, quickly and accurately completing the weighing work. This significantly reduces the weighing time and effectively improves production efficiency. Simultaneously, this solution offers high weighing accuracy, avoiding the influence of environmental or human factors on the balance. Furthermore, the large volume bottle does not directly contact the electronic balance during the entire weighing process, cleverly avoiding potential damage to the electronic balance caused by collisions or friction during hoisting, extending the balance's lifespan, and reducing equipment maintenance costs. Attached Figure Description

[0017] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the initial state structure of the gas cylinder after the main frame of this utility model has been removed.

[0020] Figure 3 This is a schematic diagram of the gas cylinder in its tilted state after the main frame of this utility model has been removed.

[0021] Figure 4 This is a schematic diagram of the gas cylinder weighing state structure after the main frame of this utility model has been removed.

[0022] Figure 5 yes Figure 4 A schematic diagram of the explosion structure.

[0023] Figure label:

[0024] 1-Frame main body, 11-Horizontal bar, 12-Controller, 2-Base, 21-Rail, 22-Slide rail groove, 23-Fixing block, 24-Support block, 31-Balance, 32-Display screen, 33-Auxiliary support block, 4-Support platform lifting mechanism, 41-First motor, 42-First drive shaft, 43-U-shaped moving frame, 44-Trapezoidal groove, 5-Support platform, 51-First hollow structure, 52-Column, 53-First Roller, 54-First long bar hole, 6-Gas cylinder support, 61-Second hollow structure, 62-Fixing component, 63-First long bar, 64-Second long bar hole, 65-Iron mesh, 651-Arc rod, 7-Gas cylinder support rotating mechanism, 71-Second motor, 72-Second drive shaft, 731-Front roller, 732-Rear roller, 74-Transmission mechanism, 75-Vertical sliding bar, 76-Vertical moving bar, 77-Second long bar. Detailed Implementation

[0025] like Figures 1 to 5 As shown, an automatic horizontal weighing gas cylinder device includes: a frame body 1, a base 2, a support platform 5, a support platform lifting mechanism 4, a gas cylinder support platform 6, and a gas cylinder support platform rotating mechanism 7.

[0026] The base 2 includes two parallel tracks 21 located at the bottom of the frame body. Each track 21 has a slide rail groove 22, and a support platform lifting mechanism 4 is provided on the slide rail groove 22. Two fixing blocks 23 are provided between the two tracks 21. A support block 24 is provided above each fixing block 23. Each fixing block 23 has a slide rail inside, which allows the support block 24 to move up and down. The top of each support block 24 is connected to the bottom of the support platform 5. The position between the two fixing blocks 23 is used to place an electronic balance 31. In this embodiment, an electronic balance 31 is used, and its display screen 32 is used to display the reading of the electronic balance 31. It can be hung on the frame body 1. In practice, other balances for weighing can also be used.

[0027] The support platform 5 is a flat plate with a first hollow structure 51 in the middle and four pillars 52 at the bottom. Each pillar 52 has a roller 53 at its bottom and a first long bar hole 54 at the left end of the flat plate.

[0028] The support platform lifting mechanism 4 includes: a U-shaped movable frame 43 located on the two slide rail grooves 22, with two trapezoidal grooves 44 on each side of the U-shaped movable frame 43 matching the four rollers 53, and a first motor 41 connected to the middle of the U-shaped movable frame 43 via a first drive shaft 42 for driving the U-shaped movable frame 43 to move on the slide rail grooves 22;

[0029] The gas cylinder support 6 is an L-shaped flat plate, including a vertical section and a horizontal section. The middle of the horizontal section of the L-shaped flat plate has a second hollow structure 61. Fixing members 62 are provided on both sides near the left end of the vertical section. A first long bar 63 is fixedly connected between the two fixing members 62. The first long bar 63 is located at the bottom of the horizontal section and passes through the first long bar hole 54. A second long bar hole 64 is provided at the right end of the horizontal section.

[0030] The cylinder support rotating mechanism includes: a second motor 71, a transmission mechanism 74, two front rollers 731, two rear rollers 732, two vertical moving rods 75, and two vertical sliding rods 76. The second motor 71 is connected to the two front rollers 731 through the transmission mechanism 74. One end of each of the two rear rollers 732 is sleeved inside the two front rollers 731. The two rear rollers 732 have external threads and pass through the middle of the two vertical moving rods 75 and are connected to their internal threads. The upper and lower parts of the vertical moving rods 75 are respectively provided with rollers 751 located in the grooves of the two horizontal rods 11 on the frame body. One end of each of the two vertical sliding rods 76 is slidably connected to the vertical moving rods 75, and the other end is respectively connected to one end of a second long rod 77. The second long rod 77 passes through the second long rod hole 64 of the cylinder support.

[0031] The transmission mechanism 74 is a synchronous belt (with threads on its inner surface).

[0032] Above the horizontal section of the gas cylinder support 6 is an iron mesh 65 that is adapted to the outer surface of the gas cylinder 100. The iron mesh 65 is also equipped with an arc-shaped rod 651 to prevent the gas cylinder 100 from tipping over.

[0033] Above the electronic balance 31 is an auxiliary support block 33 that is adapted to the outer surface of the gas cylinder 100.

[0034] The controller 12 is located on the frame body 1 and can operate the device.

[0035] The specific operating procedure for weighing gas cylinders:

[0036] During the preparation for the experiment, the electronic balance 31 is placed between the two tracks 21 and the two fixed blocks 23, and an auxiliary support block 33 is placed on the electronic balance 31 to ensure that when looking down in the vertical direction, the electronic balance 31 and the auxiliary support block 33 are located within the first hollow structure 51 and the second hollow structure 61.

[0037] Adjust the center position of the electronic balance 31 so that it is approximately on the same vertical axis as the center of gravity of the gas cylinder to be tested when it is horizontally placed on the iron mesh 65. At this time, the height of the auxiliary support block 33 should be lower than the height of the iron mesh 65 to ensure that the gas cylinder does not contact the auxiliary support block 33 when it is horizontally placed on the iron mesh 65. When the support platform 5 is lowered, the auxiliary support block 33 can support the gas cylinder. Before the test, the electronic balance reading can be zeroed through the display screen 32.

[0038] The controller 12 can be used to start the first motor 41 and the second motor 71. When the first motor 41 is started, the U-shaped moving frame 43 moves to the position closest to the first motor 41. At this time, the roller 53 at the bottom of the support platform 5 is located at the highest point of the trapezoidal groove 44, and the support platform 5 is in a "raised" state. When the second motor 71 is started, the track 74 drives the vertical moving bar 75 away from the second motor 71. The vertical sliding bar 76 moves upward along the vertical moving bar 75, and the gas cylinder support platform 6 is in a "vertical" state. Figure 2 As shown.

[0039] The gas cylinder 100 is moved and placed on the gas cylinder support platform 6, and then an arc-shaped rod 651 is fitted onto the wire mesh 65 to prevent the gas cylinder 100 from tipping over. The gas cylinder weighing operation can be started with one button via the controller 12. After the second motor 71 is started, the second drive shaft 72 rotates to drive the track 74, causing the front roller 731 to drive the rear roller 732 to roll, driving the vertical moving bar 75 to move along the side of the frame body 1 towards the second motor 71. Since the vertical sliding bar 76 can slide up and down along the vertical moving bar 75, and the second long bar 77 passes through the second long bar hole 64 of the gas cylinder support platform 6, and the first long bar 63 of the gas cylinder support platform 6 passes through the first long bar hole 54 of the support platform 5, when the vertical moving bar 75 moves towards the second motor 71, the vertical sliding bar 76 slides down along the vertical moving bar 75, and the gas cylinder support platform 6 tilts along the first long bar 63 until the bottom of the gas cylinder support platform 6 is in complete contact with the support platform 5, at which point the second motor 71 stops running. At this time, the vertical moving lever 75 is located at the junction of the front roller 731 and the rear roller 732, and the gas cylinder support 6 is in a "horizontal" state, as shown. Figure 3 As shown.

[0040] Subsequently, the first motor 41 starts, and the second drive shaft 42 rotates, causing the U-shaped moving frame 43 to move along the slide rail groove 22 on the base 2 towards the first motor 41, until the roller 53 at the bottom of the support platform 5 gradually moves towards the lowest point of the trapezoidal groove 44, at which point the first motor 41 stops. Since the bottom of the support platform 5 is connected to the support block 24, when the U-shaped moving frame 43 moves towards the first motor 41, the support platform 5 moves vertically downwards, the support block 24 retracts into the fixed block 23, and the support platform 5 is in a "lowered" state, as shown below. Figure 4 As shown.

[0041] As the support platform 5 descends, the gas cylinder support platform 6 also descends. The auxiliary support block 33 passes through the hollow structure 51 and the hollow structure 61, lifting the gas cylinder 100 that was originally supported by the iron mesh 65. When the gas cylinder 100 is completely separated from the iron mesh 65, the auxiliary support block 33 completely lifts the gas cylinder 100. After the display screen 32 displays a stable value, the mass displayed is the mass of the gas cylinder 100.

[0042] After the gas cylinder 100 is weighed, the cylinder status is restored via a single button press on the controller 12. The first motor 41 starts, and the second drive shaft 42 rotates in the opposite direction, causing the rollers 53 at the bottom of the support platform 5 to gradually move towards the highest point of the trapezoidal groove 44. At this time, the first motor 71 stops running. Since the bottom of the support platform 5 is connected to the support block 24, when the U-shaped moving frame 43 moves away from the first motor 41, the support platform 5 moves vertically upward, the support block 24 extends above the fixed block 23, and the support platform 5 is in a "raised" state. The gas cylinder support platform 6 also rises accordingly, and the iron mesh 65 supports the gas cylinder 100.

[0043] The second motor 71 starts again, and the second drive shaft 72 rotates in the opposite direction, driving the track 74 to make the roller 73 roll, driving the vertical moving bar 75 to move away from the second motor 71. The vertical sliding bar 76 slides upward on the vertical moving bar 75, and the gas cylinder support 6 rotates around the first long bar 63 and gradually tilts until it is in a "vertical" state.

[0044] This invention significantly simplifies the operation process. Operators only need to smoothly approach and move the large volume cylinder 100 to the designated position on the cylinder support 6, and the device will automatically start the weighing program, quickly and accurately completing the weighing process. This greatly reduces the weighing time and effectively improves production efficiency. Furthermore, this solution offers high weighing accuracy, avoiding the influence of environmental or human factors on the balance. Since the large volume cylinder does not directly contact the electronic balance during the entire weighing process, it cleverly avoids potential damage to the electronic balance caused by collisions or friction during hoisting, extending the balance's lifespan and reducing equipment maintenance costs.

[0045] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An automatic horizontal weighing device for gas cylinders, characterized in that: include: The main frame, base, support platform, support platform lifting mechanism, gas cylinder support platform, and gas cylinder support platform rotating mechanism; The base includes: two parallel tracks located at the bottom of the frame body, each track having a slide rail groove, a support platform lifting mechanism on the slide rail groove, two fixed blocks between the two tracks, a support block above each fixed block, each fixed block having a slide rail inside to allow the support block to move up and down, the top of each support block being connected to the bottom of the support platform, and the position between the two fixed blocks being used to place a balance scale; The support platform is a flat plate with a first hollow structure in the middle and four pillars at the bottom. Each pillar has a roller at its bottom and a first long bar hole at the left end of the flat plate. The support platform lifting mechanism includes: a U-shaped movable frame located on the two slide rail grooves, with two trapezoidal grooves on each side of the U-shaped movable frame matching the four rollers, and a first motor connected to the middle of the U-shaped movable frame via a first drive shaft for driving the U-shaped movable frame to move on the slide rail grooves; The gas cylinder support is an L-shaped flat plate, comprising a vertical section and a horizontal section. The horizontal section of the L-shaped flat plate has a second hollow structure in the middle. Fixing members are provided on both sides near the left end of the vertical section. A first long bar is fixedly connected between the two fixing members. The first long bar is located at the bottom of the horizontal section and passes through the hole of the first long bar. A second long bar hole is provided at the right end of the horizontal section. The gas cylinder support rotating mechanism includes: a second motor, a transmission mechanism, two front rollers, two rear rollers, two vertical moving rods, and two vertical sliding rods; the second motor is connected to the two front rollers through the transmission mechanism, and one end of each of the two rear rollers is respectively sleeved inside the two front rollers. The two rear rollers have external threads and pass through the middle of the two vertical moving rods, and are connected to their internal threads. The upper and lower parts of the vertical moving rods are respectively provided with rollers and are located in the grooves of two horizontal rods on the frame body; one end of each of the two vertical sliding rods is slidably connected to the vertical moving rods, and the other end is respectively connected to one end of a second long rod, which passes through the second long rod hole of the gas cylinder support; The transmission mechanism is a synchronous belt; Above the horizontal section of the gas cylinder support platform is an iron mesh adapted to the outer surface of the gas cylinder, and the iron mesh is also equipped with an arc-shaped rod to prevent the gas cylinder from tipping over.

2. The automatic horizontal weighing gas cylinder device as described in claim 1, characterized in that: An auxiliary support block adapted to the outer surface of the gas cylinder is also provided above the balance.

Images