Automatic lifting device for calibration of tank weighing system

Abstract

The application discloses a kind of for the automatic lifting device of weight of tank weighing system calibration, it is related to mechanical equipment field, and it is placed platform in cooperation with being connected below tank, the automatic lifting device of weight for the tank weighing system calibration further include cylinder, piston is equipped in the cylinder, the piston is along cylinder top and is connected with a lifting device, the lifting device is located above the platform, the piston is configured to be lifted in the cylinder and drive the lifting device to be lifted, lifting device is connected with weight platform above, improve efficiency and reduce cost, while making application scene diversification, applicable to explosion-proof workshop and non-explosion-proof workshop, improve security.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment, and more particularly to an automatic weight lifting device for calibrating a tank weighing system. Background Technology

[0002] Currently, the calibration of tank weighing systems mainly relies on manual handling of weights, which has the following drawbacks:

[0003] 1. There is a risk to personal safety due to falling weights;

[0004] 2. High labor intensity and high labor costs;

[0005] 3. Low positioning accuracy of the weights affects calibration efficiency;

[0006] 4. The electric system is susceptible to the effects of the storage tank environment (humidity, dust);

[0007] 5. Existing technology uses electric hoists for lifting, but it has problems such as complex structure and high maintenance costs.

[0008] 6. For electrically operated control systems, if used in explosion-proof areas, the electrical components need to be designed for explosion-proof conditions, which will affect costs. Summary of the Invention

[0009] In view of the above-mentioned shortcomings in the field of mechanical equipment, the present invention provides an automatic weight lifting device for the calibration of tank weighing systems. The mobile trolley design shortens the calibration time, improves efficiency and reduces costs, while diversifying the application scenarios. It is suitable for both explosion-proof and non-explosion-proof workshops, thus improving safety.

[0010] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0011] An automatic weight lifting device for calibrating a tank weighing system works in conjunction with a placement platform connected below the tank. The automatic weight lifting device for calibrating a tank weighing system also includes a cylinder with a piston inside. The piston extends along the top of the cylinder and is connected to a lifting device located above the placement platform. The piston is configured to move up and down inside the cylinder, thereby driving the lifting device to move up and down. A weight platform is connected above the lifting device.

[0012] According to one aspect of the invention, the lifting device includes a fixing device, a connecting rod, and a lifting platform, one end of the connecting rod being connected to the top of a piston via the fixing device, and the other end of the connecting rod being connected to the lifting platform.

[0013] According to one aspect of the invention, the lifting device further includes a guide rail, which is vertically disposed outside the cylinder and connected to the lifting platform, and the guide rail is configured to restrict the longitudinal movement of the lifting platform.

[0014] According to one aspect of the present invention, the bottom of the weight platform is provided with a movable limiting device, and the lifting platform is connected to the weight platform through the movable limiting device, wherein the movable limiting device is configured to allow the weight platform to rise and fall within a set stroke range.

[0015] According to one aspect of the invention, the cylinder is configured as a double-acting cylinder, and a first air source inlet and a second air source inlet are provided on the outer side of the cylinder.

[0016] According to one aspect of the invention, the first air source inlet is configured to cause the piston to rise when the cylinder is receiving air.

[0017] According to one aspect of the invention, the second air source inlet is configured to cause the piston to descend when the cylinder is receiving air.

[0018] According to one aspect of the invention, a moving device is provided at the bottom of the cylinder, the moving device including a moving platform and rollers, the cylinder being placed on the moving platform, and the rollers being mounted on the bottom of the moving platform.

[0019] According to one aspect of the invention, the tank sidewall is connected to three legs, and the placement platform is connected between the three legs.

[0020] According to one aspect of the invention, a weighing module is provided at the bottom of the three legs.

[0021] Advantages of this invention: The automatic weight lifting device for tank weighing system calibration, working in conjunction with a placement platform connected below the tank, also includes a cylinder. Inside the cylinder is a piston that extends from the top of the cylinder and is connected to a lifting device located above the placement platform. The piston is configured to move up and down within the cylinder, driving the lifting device to do so. A weight platform is connected above the lifting device. The mobile trolley design shortens calibration time, improves efficiency, and reduces costs. It also diversifies application scenarios, making it suitable for both explosion-proof and non-explosion-proof workshops, thus improving safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an automatic weight lifting device for calibrating a tank weighing system, as described in this invention.

[0024] Figure 2 This is a schematic diagram of the placement platform of an automatic weight lifting device for calibrating a tank weighing system, as described in this invention.

[0025] Figure 3 This is a top view of the placement platform of an automatic weight lifting device for calibrating a tank weighing system, as described in this invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Cylinder; 2. Piston; 3. Placement platform; 4. Weight platform; 5. Fixing device; 6. Connecting rod; 7. Lifting platform; 8. Guide rail; 9. Motion limit device; 10. First air source inlet; 11. Second air source inlet; 12. Moving platform; 13. Roller; 14. Support leg; 15. Weighing module.

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figures 1 to 3 As shown, an automatic weight lifting device for calibrating a tank weighing system, working in conjunction with a placement platform 3 connected below the tank, includes a cylinder 1, a lifting device, a moving device, and a weight platform. The cylinder 1 has a first air inlet 10 and a second air inlet 11 on its outer side. A piston 2 is located inside the cylinder 1, with its lower end vertically inserted into the cylinder 1 and its other end extending from the top of the cylinder 1 and connected to the lifting device. Valves are provided on both the first air inlet 10 and the second air inlet 11. The first air inlet 10 is located at the lower part of the cylinder 1 and is configured to drive the piston 2 upward when air enters the cylinder 1. The second air inlet 11 is located at the upper part of the cylinder 1 and is configured to drive the piston 2 downward when air enters the cylinder 1.

[0031] The lifting device includes a fixing device 5, a connecting rod 6, a lifting platform 7, and a guide rail 8. The fixing device 5 is fixedly installed on the upper end of the piston 2. The connecting rod 6 is L-shaped, with one end fixedly connected to the fixing device 5 and the other end fixedly connected to the upper side of the lifting platform 7. The guide rail 8 is laid vertically on the outside of the cylinder 1 and connected to one end of the lifting platform 7. The guide rail 8 is used to keep the lifting platform 7 moving longitudinally along the guide rail 8.

[0032] A movable limiting device 9 is provided at the bottom of the weight platform 4. The movable limiting device 9 is hollow and its length below the weight platform 4 can be set. The lifting platform 7 passes through the movable limiting device 9 and connects to and supports the vertical movement of the weight platform 4. The movable limiting device 9 can adjust its length to allow the weight platform 4 to rise and fall within a set stroke range. The weight platform 4 is positioned directly opposite the placement platform 3, so that the lifting platform 7 can contact the placement platform 3 when it descends, and the movable limiting device 9 can prevent additional load from being applied to the placement platform 3.

[0033] The mobile device includes a mobile platform 12 and rollers 13. The cylinder 1 is mounted on the mobile platform 12, and four rollers 13 are mounted on the bottom of the mobile platform 12. The mobile device can transport the cylinder 1 to multiple storage tanks for calibration.

[0034] like Figure 3 As shown, the storage tank has three support legs 14 on its side wall, and a weighing module 15 is installed below the three support legs 14. The weighing module 15 can display the specific value through a weighing instrument. The placement platform 3 is in the shape of an equilateral triangle, and each corner is welded to one of the support legs 14, so that the placement platform 3 is horizontally connected to the bottom of the storage tank.

[0035] During the initial calibration of the tank weighing instrument, the weights on the weight platform 4 need to be lifted, and the valve at the first air source inlet 10 needs to be opened to supply air to the cylinder 1 through the external air source. This drives the piston 2 to rise, and at the same time, the piston 2 drives the lifting platform 7 to rise through the lifting device, so that the lifting platform 7 supports the weight platform 4 and rises along the guide rail 8. At this time, the weight platform 4 is detached from the placement platform 3, the weighing device 15 does not bear the mass of the weights, and the weighing instrument displays zero.

[0036] When calibrating the weighing instrument of the storage tank, it is necessary to increase the mass of the weights on the weight platform 4 and apply them to the placement platform 3. The valve at the second air source inlet 11 is opened, supplying air to the cylinder 1 through an external air source, driving the piston 2 to descend. Simultaneously, the piston 2, through the lifting device, drives the lifting platform 7 to descend, causing the lifting platform 7 to drive the weight platform 4 to descend along the guide rail 8. At this point, the weight platform 4 contacts the placement platform 3 through the movable limit device 9 and transfers the mass. By using the pre-adjusted and set movable limit device 9, the lifting device can disengage from the weight platform 4, preventing the application of additional load to the placement platform 3. Experiments show that the power density of the compressed air drive is 40% higher than that of the electric system, greatly improving power efficiency, and reducing the single calibration time from 30 minutes to 3 minutes.

[0037] Advantages of this invention: The automatic weight lifting device for tank weighing system calibration, working in conjunction with a placement platform connected below the tank, also includes a cylinder. Inside the cylinder is a piston that extends from the top of the cylinder and is connected to a lifting device located above the placement platform. The piston is configured to move up and down within the cylinder, driving the lifting device to do so. A weight platform is connected above the lifting device. The mobile trolley design shortens calibration time, improves efficiency, and reduces costs. It also diversifies application scenarios, making it suitable for both explosion-proof and non-explosion-proof workshops, thus improving safety.

[0038] Example 2:

[0039] like Figures 1 to 3 As shown, an automatic weight lifting device for calibrating a tank weighing system, working in conjunction with a placement platform 3 connected below the tank, includes a cylinder 1, a lifting device, a moving device, and a weight platform. The cylinder 1 has a first air inlet 10 and a second air inlet 11 on its outer side. A piston 2 is located inside the cylinder 1, with its lower end vertically inserted into the cylinder 1 and its other end extending from the top of the cylinder 1 and connected to the lifting device. Valves are provided on both the first air inlet 10 and the second air inlet 11. The first air inlet 10 is located at the lower part of the cylinder 1 and is configured to drive the piston 2 upward when air enters the cylinder 1. The second air inlet 11 is located at the upper part of the cylinder 1 and is configured to drive the piston 2 downward when air enters the cylinder 1.

[0040] The lifting device includes a fixing device 5, a connecting rod 6, a lifting platform 7, and a guide rail 8. The fixing device 5 is fixedly installed on the upper end of the piston 2. The connecting rod 6 is L-shaped, with one end fixedly connected to the fixing device 5 and the other end fixedly connected to the upper side of the lifting platform 7. The guide rail 8 is laid vertically on the outside of the cylinder 1 and connected to one end of the lifting platform 7. The guide rail 8 is used to keep the lifting platform 7 moving longitudinally along the guide rail 8.

[0041] A movable limiting device 9 is provided at the bottom of the weight platform 4. The movable limiting device 9 is hollow and its length below the weight platform 4 can be set. The lifting platform 7 passes through the movable limiting device 9 and connects to and supports the vertical movement of the weight platform 4. The movable limiting device 9 can adjust its length to allow the weight platform 4 to rise and fall within a set stroke range. The weight platform 4 is positioned directly opposite the placement platform 3, so that the lifting platform 7 can contact the placement platform 3 when it descends, and the movable limiting device 9 can prevent additional load from being applied to the placement platform 3.

[0042] The mobile device includes a mobile platform 12. In this embodiment, the bottom of the mobile platform 12 is equipped with reversible tracks. A cylinder 1 is mounted on the mobile platform 12, and a pair of reversible tracks are mounted on the bottom of the mobile platform 12. The mobile device can transport the cylinder 1 to multiple storage tanks for calibration work.

[0043] like Figure 3 As shown, the storage tank has three support legs 14 on its side wall, and a weighing module 15 is installed below the three support legs 14. The weighing module 15 can display the specific value through a weighing instrument. The placement platform 3 is in the shape of an equilateral triangle, and each corner is welded to one of the support legs 14, so that the placement platform 3 is horizontally connected to the bottom of the storage tank.

[0044] During the initial calibration of the tank weighing instrument, the weights on the weight platform 4 need to be lifted, and the valve at the first air source inlet 10 needs to be opened to supply air to the cylinder 1 through the external air source. This drives the piston 2 to rise, and at the same time, the piston 2 drives the lifting platform 7 to rise through the lifting device, so that the lifting platform 7 supports the weight platform 4 and rises along the guide rail 8. At this time, the weight platform 4 is detached from the placement platform 3, the weighing device 15 does not bear the mass of the weights, and the weighing instrument displays zero.

[0045] When calibrating the weighing instrument of the storage tank, it is necessary to increase the mass of the weights on the weight platform 4 and apply them to the placement platform 3. The valve at the second air source inlet 11 is opened, supplying air to the cylinder 1 through an external air source, driving the piston 2 to descend. Simultaneously, the piston 2, through the lifting device, drives the lifting platform 7 to descend, causing the lifting platform 7 to drive the weight platform 4 to descend along the guide rail 8. At this point, the weight platform 4 contacts the placement platform 3 through the movable limit device 9 and transfers the mass. By using the pre-adjusted and set movable limit device 9, the lifting device can disengage from the weight platform 4, preventing the application of additional load to the placement platform 3. Experiments show that the power density of the compressed air drive is 40% higher than that of the electric system, greatly improving power efficiency, and reducing the single calibration time from 30 minutes to 3 minutes.

[0046] Advantages of this invention: The automatic weight lifting device for tank weighing system calibration, working in conjunction with a placement platform connected below the tank, also includes a cylinder. Inside the cylinder is a piston that extends from the top of the cylinder and is connected to a lifting device located above the placement platform. The piston is configured to move up and down within the cylinder, driving the lifting device to do so. A weight platform is connected above the lifting device. The mobile trolley design shortens calibration time, improves efficiency, and reduces costs. It also diversifies application scenarios, making it suitable for both explosion-proof and non-explosion-proof workshops, thus improving safety.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic weight lifting device for calibrating a tank weighing system, which works in conjunction with a placement platform (3) connected below the tank, characterized in that, The automatic weight lifting device for calibrating the tank weighing system also includes a cylinder (1), inside which is provided a piston (2), the piston (2) extends out along the top of the cylinder (1) and is connected to a lifting device, the lifting device is located above the placement platform (3), the piston (2) is configured to move up and down inside the cylinder (1) and drive the lifting device to move up and down, and a weight platform (4) is connected above the lifting device.

2. The automatic weight lifting device for calibrating a tank weighing system according to claim 1, characterized in that, The lifting device includes a fixing device (5), a connecting rod (6) and a lifting platform (7). One end of the connecting rod (6) is connected to the top of the piston (2) through the fixing device (5), and the other end of the connecting rod (6) is connected to the lifting platform (7).

3. The automatic weight lifting device for calibrating a tank weighing system according to claim 2, characterized in that, The lifting device also includes a guide rail (8), which is vertically disposed outside the cylinder (1) and connected to the lifting platform (7). The guide rail (8) is configured to restrict the lifting platform (7) from moving longitudinally.

4. The automatic weight lifting device for calibrating a tank weighing system according to claim 2, characterized in that, The weight platform (4) is provided with a movable limit device (9) at the bottom. The lifting platform (7) is connected to the weight platform (4) through the movable limit device (9). The movable limit device (9) is configured to make the weight platform (4) rise and fall within a set stroke range.

5. The automatic weight lifting device for calibrating a tank weighing system according to claim 1, characterized in that, The cylinder (1) is configured as a double-acting cylinder, and a first air source inlet (10) and a second air source inlet (11) are provided on the outside of the cylinder (1).

6. The automatic weight lifting device for calibrating a tank weighing system according to claim 5, characterized in that, The first air inlet (10) is configured to cause the piston (2) to rise when the cylinder (1) is inlet.

7. The automatic weight lifting device for calibrating a tank weighing system according to claim 5, characterized in that, The second air inlet (11) is configured to cause the piston (2) to drop when the cylinder (1) is receiving air.

8. The automatic weight lifting device for calibrating a tank weighing system according to any one of claims 1 to 7, characterized in that, The cylinder (1) is provided with a moving device at the bottom. The moving device includes a moving platform (12) and a roller (13). The cylinder (1) is placed on the moving platform (12), and the roller (13) is installed at the bottom of the moving platform (12).

9. The automatic weight lifting device for calibrating a tank weighing system according to claim 1, characterized in that, The tank sidewall is connected to three support legs (14), and the placement platform (3) is connected between the three support legs (14).

10. The automatic weight lifting device for calibrating a tank weighing system according to claim 9, characterized in that, Weighing modules (15) are provided at the bottom of the three support legs (14).

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