Automatic weighing device for gas cylinder

Abstract

The utility model belongs to the field of gas cylinder automatic gas distribution auxiliary equipment, and particularly relates to a gas cylinder automatic weighing device which comprises a supporting frame, a lifting motor and an electronic scale, the lifting motor is installed on the supporting frame, the electronic scale is located on the inner side of the supporting frame, and linear guide assemblies are fixedly connected to the four corners of the supporting frame in the vertical direction. A lifting frame is fixedly connected between movable parts of the linear guide assemblies, a gas cylinder supporting plate is connected to the lifting frame through a plurality of lifting guide positioning assemblies, top plates and bottom plates are arranged on the front side and the rear side of the supporting frame correspondingly, lead screws are rotationally connected between the two sets of corresponding top plates and bottom plates correspondingly, and the two lead screws are in threaded connection with movable nuts correspondingly. The two moving nuts are fixedly connected with the lifting frame, and the two lead screws are connected with the lifting motor. According to the utility model, the original cylinder driving is replaced by the motor driving, so that the on-site disorder is effectively prevented, and the device is more stable to move; meanwhile, air leakage of the air delivery pipe is avoided, and operation is more reliable.

Description

Technical Field

[0001] This utility model relates to an automatic weighing device for gas cylinders, belonging to the field of automatic gas cylinder dispensing auxiliary equipment. Background Technology

[0002] Automated gas cylinder mixing machines are widely used in medical, fire protection, aviation, petrochemical, metallurgical, and shipbuilding industries for storing and transporting various gases. Through an automated control system, these machines can automatically prepare gases according to preset mixing schemes, significantly improving efficiency and accuracy. In the gas cylinder mixing process, weighing the cylinders is necessary to ensure the correct gas volume. Traditionally, cylinder weighing is done manually, which wastes manpower and hinders the full automation of the automated mixing machine.

[0003] To address this, Chinese utility model patent CN207034624U discloses "an automatic gas cylinder dispensing device, comprising a frame, an electronic scale, a PLC control unit, and a vacuum pump mounted on the frame. One side of the frame, from bottom to top, is provided with a gas cylinder weighing mechanism, a gas cylinder fixing mechanism, a gas cylinder filling clamp, a gas cylinder clamp lifting frame, and a cylinder valve handwheel switch mechanism. The electronic scale is located below the gas cylinder weighing mechanism." While the electronic scale and weighing mechanism in the aforementioned prior art can automatically weigh gas cylinders, the weighing mechanism uses a double-rod cylinder, requiring a gas delivery pipe during use. Furthermore, the gas cylinder weighing mechanism needs to move back and forth between the gas cylinder positioning and clamping station and the weighing and dispensing station. On the one hand, the redundant gas delivery pipe can easily lead to clutter on-site, affecting the movement of the gas cylinder weighing mechanism; on the other hand, because the gas delivery pipe moves back and forth with the gas cylinder weighing mechanism, the connection between the gas delivery pipe and the double-rod cylinder is prone to leakage, resulting in poor overall application performance. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an automatic weighing device for gas cylinders that is stable and reliable in operation.

[0005] The automatic gas cylinder weighing device of this utility model includes a support frame, a lifting motor, and an electronic scale. The lifting motor is mounted on the support frame, and the electronic scale is located inside the support frame. Linear guide components are fixedly connected to the four corners of the support frame in the vertical direction. A lifting frame is fixedly connected between the moving parts of each linear guide component. A gas cylinder support plate is connected to the lifting frame through multiple lifting guide positioning components. Top plates and bottom plates are provided on the front and rear sides of the support frame. A lead screw is rotatably connected between two sets of corresponding top plates and bottom plates. A movable nut is threaded onto each of the two lead screws. Both movable nuts are fixedly connected to the lifting frame, and both lead screws are connected to the lifting motor.

[0006] Furthermore, one of the top plates is equipped with a secondary two-axis commutator and a primary two-axis commutator, and the other top plate is equipped with a secondary two-axis commutator and a primary three-axis commutator. The two secondary two-axis commutators are respectively connected to two lead screws. A first drive shaft is connected between one secondary two-axis commutator and the primary three-axis commutator, a second drive shaft is connected between the other secondary two-axis commutator and the primary two-axis commutator, and a third drive shaft is connected between the primary two-axis commutator and the primary three-axis commutator. The primary three-axis commutator is connected to the lifting motor.

[0007] Furthermore, the linear guide assembly includes a linear guide rail fixedly connected to the support frame and a slider fixedly connected to the lifting frame, with the linear guide rail and the slider correspondingly adapted to each other.

[0008] Furthermore, there are four lifting guide positioning components, which are located at the four corners of the gas cylinder support plate.

[0009] Furthermore, the lifting guide positioning assembly includes a tapered conductor connected to the lifting frame and a guide sleeve connected to the gas cylinder support plate, with the tapered conductor and the guide sleeve correspondingly adapted to each other.

[0010] Furthermore, the guide sleeve is threadedly connected to the gas cylinder support plate.

[0011] Working principle and process:

[0012] In operation, the lifting motor rotates the lead screw, which in turn moves the moving nut downwards. This causes the lifting frame and the gas cylinder support plate to move downwards. Once the gas cylinder support plate contacts the weighing pan of the electronic scale, the gas cylinder support plate stops moving downwards, while the lifting frame continues to move downwards. This separates the conical conductor from the guide sleeve, thus separating the lifting frame from the gas cylinder support plate and enabling the weighing of the gas cylinders on the support plate. The lifting motor then reverses its rotation, causing the lead screw to rotate in the opposite direction. This moves the moving nut upwards, causing the lifting frame to move upwards and insert the conical conductor into the guide sleeve. The lifting frame continues to move upwards, and the contact between the conical conductor and the guide sleeve causes the gas cylinder support plate to move upwards, detaching it from the weighing pan of the electronic scale. This allows the device to smoothly displace the cylinders.

[0013] The advantages of this utility model compared with the prior art are:

[0014] The automatic gas cylinder weighing device described in this utility model uses a motor drive instead of the original cylinder drive, which effectively prevents the mess caused by the gas delivery pipe, ensures the smooth movement of the device, and makes its operation more stable; at the same time, there will be no gas leakage in the gas delivery pipe, making its operation more reliable. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a front view of an embodiment of the present utility model.

[0017] In the diagram: 1. Support frame; 2. Base plate; 3. Lead screw; 4. Moving nut; 5. Lifting frame; 6. Gas cylinder support plate; 7. Lifting guide and positioning assembly; 8. Linear guide rail; 9. Slider; 10. Top plate; 11. Second-stage two-axis commutator; 12. Second drive shaft; 13. First-stage two-axis commutator; 14. Third drive shaft; 15. First-stage three-axis commutator; 16. First drive shaft; 17. Lifting motor; 18. Electronic scale; 19. Gas cylinder; 20. Guide sleeve; 21. Conical conductor. Detailed Implementation

[0018] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0019] Example 1:

[0020] like Figure 1 , Figure 2 As shown, the automatic gas cylinder weighing device of this utility model includes a support frame 1, a lifting motor 17, and an electronic scale 18. The lifting motor 17 is mounted on the support frame 1, and the electronic scale 18 is located inside the support frame 1. Linear guide components are fixedly connected to the four corners of the support frame 1 in the vertical direction. Lifting frames 5 are fixedly connected between the moving parts of each linear guide component. Gas cylinder support plates 6 are connected to the lifting frame 5 through multiple lifting guide positioning components 7. The front and rear sides of the support frame 1 are provided with top plates 10 and bottom plates 2. Screws 3 are rotatably connected between the two sets of corresponding top plates 10 and bottom plates 2. Moving nuts 4 are threadedly connected to the two screws 3. The two moving nuts 4 are fixedly connected to the lifting frame 5. The two screws 3 are connected to the lifting motor 17.

[0021] In use, the lifting motor 17 rotates the lead screw 3, which in turn moves the moving nut 4 downwards. This causes the lifting frame 5 and the gas cylinder support plate 6 to move downwards. When the gas cylinder support plate 6 contacts the weighing pan of the electronic scale 18, the gas cylinder support plate 6 stops moving downwards, while the lifting frame 5 continues to move downwards. This allows the lifting frame 5 to stop supporting the gas cylinder support plate 6. At this point, the gas cylinder support plate 6 is only supported by the weighing pan of the electronic scale 18, thus enabling the weighing of the gas cylinder 19 on the gas cylinder support plate 6. By reversing the movement of the lifting motor 17, the lead screw 3 rotates in the opposite direction, which in turn moves the moving nut 4 upwards. This causes the lifting frame 5 to move upwards, and the lifting frame 5, through multiple lifting guide positioning components 7, supports the gas cylinder support plate 6 and moves it upwards, allowing the gas cylinder support plate 6 to detach from the weighing pan of the electronic scale 18. This enables the device to move smoothly.

[0022] The automatic gas cylinder weighing device described in this utility model uses a motor drive instead of the original cylinder drive, which effectively prevents the mess caused by the gas delivery pipe, ensures the smooth movement of the device, and makes its operation more stable; at the same time, there will be no gas leakage in the gas delivery pipe, making its operation more reliable.

[0023] Example 2:

[0024] like Figure 1 , Figure 2 As shown, based on Example 1,

[0025] Furthermore, one of the top plates 10 is equipped with a secondary two-axis commutator 11 and a primary two-axis commutator 13, and the other top plate 10 is equipped with a secondary two-axis commutator 11 and a primary three-axis commutator 15. The two secondary two-axis commutators 11 are respectively connected to two lead screws 3. A first drive shaft 16 is connected between one secondary two-axis commutator 11 and the primary three-axis commutator 15. A second drive shaft 12 is connected between the other secondary two-axis commutator 11 and the primary two-axis commutator 13. A third drive shaft 14 is connected between the primary two-axis commutator 13 and the primary three-axis commutator 15. The primary three-axis commutator 15 is connected to the lifting motor 17.

[0026] Furthermore, the linear guide assembly includes a linear guide rail 8 fixedly connected to the support frame 1 and a slider 9 fixedly connected to the lifting frame 5. The linear guide rail 8 and the slider 9 are adapted to each other, and the lifting frame 5 moves up and down relative to the support frame 1 through the cooperation of the linear guide rail 8 and the slider 9, and the operation is smooth and stable.

[0027] Furthermore, there are four lifting guide positioning components 7, which are located at the four corners of the gas cylinder support plate 6. The four lifting guide positioning components 7 work together to stably guide and position the gas cylinder support plate 6, which helps to ensure the stress stability of the gas cylinder support plate 6.

[0028] Furthermore, the lifting guide positioning assembly 7 includes a tapered conductor 21 connected to the lifting frame 5 and a guide sleeve 20 connected to the gas cylinder support plate 6. The tapered conductor 21 and the guide sleeve 20 are correspondingly adapted. During weighing, the tapered conductor 21 and the guide sleeve 20 are separated to avoid interference with the electronic scale 18. After weighing, when the tapered conductor 21 rises with the lifting frame 5, since the upper end of the tapered conductor 21 is smaller and the port of the guide sleeve 20 is larger, it can be ensured that the tapered conductor 21 can be smoothly inserted into the guide sleeve 20, thereby achieving the positioning and support of the gas cylinder support plate 6, thus ensuring the synchronous displacement of the gas cylinder support plate 6 and the support frame 1.

[0029] Furthermore, the guide sleeve 20 is threadedly connected to the gas cylinder support plate 6, and the up and down position of the guide sleeve 20 can be adjusted to ensure that each set of tapered conductors 21 is synchronously attached to the guide sleeve 20, thus ensuring the stress stability of the gas cylinder support plate 6.

[0030] It should be noted that in the description of this utility model, the terms "front" and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this utility model.

Claims

1. An automatic weighing device for gas cylinders, characterized in that: The system includes a support frame (1), a lifting motor (17), and an electronic scale (18). The lifting motor (17) is mounted on the support frame (1), and the electronic scale (18) is located inside the support frame (1). Linear guide components are fixedly connected to the four corners of the support frame (1) in the vertical direction. Lifting frames (5) are fixedly connected between the moving parts of each linear guide component. Gas cylinder support plates (6) are connected to the lifting frame (5) through multiple lifting guide positioning components (7). The front and rear sides of the support frame (1) are provided with top plates (10) and bottom plates (2). Screws (3) are rotatably connected between the two sets of corresponding top plates (10) and bottom plates (2). Moving nuts (4) are threadedly connected to the two screws (3). The two moving nuts (4) are fixedly connected to the lifting frame (5), and the two screws (3) are connected to the lifting motor (17).

2. The automatic weighing device for gas cylinders according to claim 1, characterized in that: One of the top plates (10) is equipped with a secondary two-axis commutator (11) and a primary two-axis commutator (13), and the other top plate (10) is equipped with a secondary two-axis commutator (11) and a primary three-axis commutator (15). The two secondary two-axis commutators (11) are respectively connected to two lead screws (3). A first drive shaft (16) is connected between one of the secondary two-axis commutators (11) and the primary three-axis commutator (15). A second drive shaft (12) is connected between the other secondary two-axis commutator (11) and the primary two-axis commutator (13). A third drive shaft (14) is connected between the primary two-axis commutator (13) and the primary three-axis commutator (15). The primary three-axis commutator (15) is connected to the lifting motor (17).

3. The automatic weighing device for gas cylinders according to claim 1, characterized in that: The linear guide assembly includes a linear guide rail (8) fixedly connected to the support frame (1) and a slider (9) fixedly connected to the lifting frame (5), with the linear guide rail (8) and the slider (9) corresponding to each other.

4. The automatic weighing device for gas cylinders according to claim 1, characterized in that: There are four lifting guide positioning components (7), which are located at the four corners of the gas cylinder support plate (6).

5. The automatic weighing device for gas cylinders according to any one of claims 1 to 4, characterized in that: The lifting guide positioning component (7) includes a tapered conductor (21) connected to the lifting frame (5) and a guide sleeve (20) connected to the gas cylinder support plate (6), with the tapered conductor (21) and the guide sleeve (20) corresponding to each other.

6. The automatic weighing device for gas cylinders according to claim 5, characterized in that: The guide sleeve (20) is threaded onto the gas cylinder support plate (6).

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