Roller carrier device for supporting steel lining plastic storage tank

Abstract

The invention discloses a roller carrier device for supporting a steel lining plastic storage tank, which comprises a mounting block, and further comprises a special-shaped supporting roller mechanism which is arranged on the mounting block and is used for lifting the special-shaped steel lining plastic storage tank and flexibly fitting and supporting the special-shaped steel lining plastic storage tank, step-by-step fine adjustment is carried out according to the inclined generatrix of the conical tank body or the variable curvature surface of the oval tank body, and the lifting device is used for lifting the special-shaped steel lining plastic storage tank; the distance measuring pulley mechanism is arranged below the mounting block and drives the mounting block to move above the sliding groove, and the distance measuring pulley mechanism detects pressure through elastic deformation of a spring and the distance of a distance detector so as to detect the pressure borne by the position where the distance measuring pulley mechanism is located; according to the special-shaped steel lining plastic storage tank supporting device, through the arranged special-shaped supporting rolling wheel mechanism, flexible attaching supporting of the special-shaped steel lining plastic storage tank is achieved, and a nested rotating structure of four stages of arc-shaped blocks is matched with radial restraining and angle limiting of a dovetail-shaped guide rail.

Description

Technical Field

[0001] This invention relates to the field of steel-lined plastic storage tank technology, specifically a roller frame device for supporting steel-lined plastic storage tanks. Background Technology

[0002] Steel-lined plastic storage tanks, as composite containers combining the strength of a metal shell with the corrosion resistance of a plastic lining, are widely used in chemical, environmental protection, and pharmaceutical industries. During the manufacturing, transportation, installation, and maintenance of steel-lined plastic storage tanks, roller frames are typically used to support and rotate the tank body to facilitate welding, lining, and testing operations.

[0003] Existing roller frame devices mostly adopt a symmetrical roller group structure with fixed spacing, and their design is mainly for standard cylindrical tanks. However, in actual applications, there are a large number of non-standard shaped steel-lined plastic storage tanks, such as elliptical tanks and conical tanks. At the same time, some storage tanks have obvious uneven mass distribution problems due to the welding and installation of accessories such as pipe openings and supports. Because of the irregular shape of non-standard tanks (such as the gradual change in diameter of conical tanks and the change in curvature of elliptical tanks), the fixed structure of the rollers cannot form an effective fit with the tank surface, resulting in a small contact area and local pressure concentration. This not only easily causes mechanical damage to the tank surface, but also affects the stability and accuracy of rotation operation due to slippage between the rollers and the tank.

[0004] On the other hand, for tanks with uneven mass distribution, the existing roller frame cannot be adaptively adjusted according to the center of gravity shift, resulting in a serious imbalance of force on each group of rollers. Some rollers bear excessive loads, which accelerates the wear of components such as bearings and drive shafts and reduces the service life of the equipment. At the same time, the torque imbalance caused by uneven force can cause the tank to tilt, which not only affects the quality of the processing technology (such as weld seam misalignment and uneven plastic lining thickness), but also poses a safety hazard of overturning. Summary of the Invention

[0005] The present invention addresses the problem that existing technical solutions are too simplistic by providing a solution that is significantly different from existing technologies. It mainly provides a roller frame device for supporting steel-lined plastic storage tanks, thereby solving the technical problems mentioned in the background.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A roller frame device for supporting a steel-lined plastic storage tank includes a mounting block and further includes: a shaped support roller mechanism on the mounting block for lifting the shaped steel-lined plastic storage tank and providing flexible support; the mechanism is finely adjusted stepwise according to the inclined generatrix of the conical tank or the variable curvature surface of the elliptical tank to lift the shaped steel-lined plastic storage tank; a distance measuring pulley mechanism located below the mounting block to move the mounting block above a sliding groove; the distance measuring pulley mechanism uses the elastic deformation of a spring and the distance of a distance detector to detect the pressure at its location; and a drive assembly inside the mounting block to drive the distance measuring pulley mechanism to move and change the pressure borne by the distance measuring pulley mechanism.

[0007] Preferably, the mounting block has an arc-shaped mounting groove for use with the irregular support roller mechanism, and a control panel is provided on the outside of the mounting block.

[0008] Preferably, the irregular support roller mechanism includes an arc-shaped mounting block, which is installed inside the arc-shaped mounting groove. Two sets of first arc-shaped blocks are provided above the arc-shaped mounting block, and the first arc-shaped blocks can rotate within the arc-shaped grooves opened on the arc-shaped mounting block to cooperate with it.

[0009] Preferably, two sets of second arc-shaped blocks are provided above the first arc-shaped block, and the second arc-shaped blocks can rotate within the arc-shaped grooves opened in the first arc-shaped block to cooperate with it.

[0010] Preferably, two sets of third arc blocks are provided above the second arc block, and the third arc blocks can rotate within the arc grooves opened in the second arc block to cooperate with it.

[0011] Preferably, two sets of fourth arc-shaped blocks are provided above the third arc-shaped block, and the fourth arc-shaped blocks can rotate within the arc-shaped grooves opened in the third arc-shaped block to cooperate with it.

[0012] Preferably, the end of the fourth arc-shaped block is provided with a roller mounting groove, and a support roller is rotatably provided inside the roller mounting groove.

[0013] Preferably, the distance measuring pulley mechanism is provided in two sets. The distance measuring pulley mechanism includes a support plate, and the bottom of the support plate is connected to the pulley mounting plate by a number of symmetrically arranged springs. The pulley mounting plate is used to install the pulley, and the top of the pulley mounting plate is provided with a distance detector for detecting the distance between the pulley mounting plate and the support plate.

[0014] Preferably, the driving component includes a driving block, which moves within a movable groove at the bottom of the mounting block. The driving block can drive the support plate to move synchronously. A rack plate is installed on one side of the driving block to drive the driving block to move. The rack plate meshes with a gear provided inside the mounting block, and the gear can rotate under the action of the driving device.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention achieves flexible fit support for irregular steel-lined plastic storage tanks by setting up an irregular support roller mechanism, including an arc-shaped mounting block, a first arc-shaped block, a second arc-shaped block, a third arc-shaped block, a fourth arc-shaped block and a dovetail-shaped arc-shaped guide rail. The nested rotation structure of the four-level arc-shaped blocks, combined with the radial constraint and angular limit of the dovetail-shaped guide rail, can be finely adjusted step by step for the inclined generatrix of the conical tank or the variable curvature surface of the elliptical tank, ensuring that the outer surface of the support roller forms a line contact fit with the surface of the tank, avoiding the problem of local pressure concentration caused by poor fit of traditional fixed rollers, effectively preventing mechanical damage to the surface of the tank and roller slippage, and improving the stability and adaptability of non-standard tank support.

[0016] (2) The present invention achieves real-time detection and dynamic balance adjustment of tank support pressure through the cooperation of the set distance measuring pulley mechanism and the drive component. The distance measuring pulley mechanism uses the elastic deformation of the spring and the distance detection of the distance detector, combined with Hooke's law to accurately calculate the pressure of each support point. When the pressure distribution deviation exceeds the threshold, the drive component drives the mounting block to move through the meshing transmission of gear and rack plate until the pressure deviation of each support point is ≤5%. This closed-loop control of detection and adjustment avoids the problem of force imbalance of the tank with uneven mass distribution, reduces the excessive wear of bearings, transmission shafts and other components, extends the service life of the equipment, and prevents the risk of tank tilting due to torque imbalance.

[0017] (3) This invention further improves the overall performance of the equipment by the synergistic effect between the angle adaptive adjustment of the irregular support roller mechanism and the pressure dynamic balance of the distance measuring pulley mechanism and the drive component. The flexible fit of the multi-level arc blocks ensures the uniform distribution of the tank weight, providing a stable foundation for pressure detection. The pressure detection data guides the drive component to accurately adjust its position and optimize the stress state of the support angle in reverse. This synergistic mechanism not only meets the support requirements of non-standard shaped tanks, but also ensures the stability of the tank during the rotation operation, reduces process defects such as weld seam offset and uneven plastic lining thickness, reduces manual adjustment costs and safety risks, and improves the process quality of steel-lined plastic storage tank manufacturing and maintenance.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the irregular support roller mechanism of the present invention; Figure 3 This is a schematic diagram showing the positional relationship of the distance measuring pulley mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the distance measuring pulley mechanism of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the three-dimensional structure of the distance measuring pulley mechanism of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the driving component structure of the present invention.

[0020] Numbering on the map: 1. Mounting block; 2. Irregular support roller mechanism; 21. Arc-shaped mounting block; 22. First arc-shaped block; 23. Second arc-shaped block; 24. Third arc-shaped block; 25. Fourth arc-shaped block; 26. Roller mounting groove; 27. Support roller; 3. Distance measuring pulley mechanism; 31. Bearing plate; 32. Spring; 33. Pulley mounting plate; 34. Pulley; 35. Distance detector; 4. Slide groove; 5. Drive assembly; 51. Drive block; 52. Rack plate; 53. Gear; 6. Control panel. Detailed Implementation

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please refer to the appendix carefully. Figure 1-6 A roller frame device for supporting a steel-lined plastic storage tank includes a mounting block 1. The mounting block 1 has an arc-shaped mounting groove that works in conjunction with a non-circular support roller mechanism 2. The arc-shaped mounting groove is a through groove, and a control panel 6 is provided on the outside of the mounting block 1.

[0025] The irregular support roller mechanism 2 includes an arc-shaped mounting block 21, which is installed inside the arc-shaped mounting groove. The arc-shaped mounting block 21 is rigidly fixed to the mounting block 1 by high-strength bolts.

[0026] Two sets of first arc-shaped blocks 22 are provided above the arc-shaped mounting block 21. Each first arc-shaped block 22 can rotate within an arc-shaped groove provided on the arc-shaped mounting block 21 to cooperate with it. An arc-shaped guide rail, adapted to the outer slider of the first arc-shaped block 22, is machined on the inner arc surface of the top of the arc-shaped mounting block 21. The guide rail has a dovetail-shaped cross-section to ensure that the first arc-shaped block 22 does not move radially during rotation. The arc-shaped guide rail also limits the rotation angle of the first arc-shaped block 22. Two sets of second arc-shaped blocks 23 are provided above the first arc-shaped block 22. Each second arc-shaped block 23 can rotate within an arc-shaped groove provided on the first arc-shaped block 22 to cooperate with it. The inner arc surface of the second arc block 23 is machined with an arc-shaped guide rail that matches the outer slider of the second arc block 23. The guide rail has a dovetail-shaped cross-section to ensure that the second arc block 23 does not move radially during rotation. The arc-shaped guide rail also limits the rotation angle of the second arc block 23. Two sets of third arc blocks 24 are set above the second arc block 23, and the third arc blocks 24 can rotate within the arc-shaped grooves opened in the second arc block 23 to cooperate with them. The inner arc surface of the top of the second arc block 23 is machined with an arc-shaped guide rail that matches the outer slider of the third arc block 24. The guide rail has a dovetail-shaped cross-section to ensure that the third arc block 24 does not move radially during rotation. The arc-shaped guide rail also limits the rotation angle of the second arc block 23. The rotation angle of the third arc-shaped block 24 is limited to a certain extent. Two sets of fourth arc-shaped blocks 25 are arranged above the third arc-shaped block 24, and the fourth arc-shaped blocks 25 can rotate within the arc-shaped grooves provided in the third arc-shaped block 24 to cooperate with it. The inner arc surface of the top of the third arc-shaped block 24 is machined with an arc-shaped guide rail adapted to the outer slider of the fourth arc-shaped block 25. The guide rail has a dovetail-shaped cross-section to ensure that the fourth arc-shaped block 25 does not move radially during rotation. The arc-shaped guide rail also limits the rotation angle of the fourth arc-shaped block 25. A roller mounting groove 26 is installed at the end of the fourth arc-shaped block 25, and a support roller 27 is rotatably mounted inside the roller mounting groove 26 to support... Roller 27 contacts the outer side of the irregularly shaped steel-lined plastic storage tank. Later, under the action of external force, the irregularly shaped steel-lined plastic storage tank can rotate above the supporting roller 27. Through the nested rotation structure of four-stage arc blocks, the supporting roller 27 can achieve a wide range and high precision angle adjustment. This multi-stage linkage design can achieve flexible fit of the supporting roller 27. For the inclined generatrix of the conical tank or the variable curvature surface of the elliptical tank, the line contact between the outer surface of the supporting roller 27 and the surface of the tank can be ensured through step-by-step fine adjustment. The angle adjustment of the supporting roller 27 in conjunction with the multi-stage arc blocks can make the weight of the tank evenly distributed on each support point, avoiding tank deformation and roller damage caused by local overload.

[0027] Below the mounting block 1 is a distance-measuring pulley mechanism 3, which detects the pressure it bears at its location and moves the mounting block 1 above the slide 4. Two sets of distance-measuring pulley mechanisms 3 are provided. Each distance-measuring pulley mechanism 3 includes a support plate 31, and the bottom of the support plate 31 is connected to the pulley mounting plate 33 via several symmetrically arranged springs 32. The springs 32 can be cylindrical helical compression springs, and a limiting telescopic rod can be provided inside the springs 32 to prevent lateral bending and enhance structural stability. The pulley mounting plate 33 is used to install the pulley 34, and a distance detector 35 is provided at the top of the pulley mounting plate 33 to detect the distance between the pulley mounting plate 33 and the support plate 31. The distance detector 35 can be a laser displacement sensor. The control panel 6 can control the distance... The sensor 35 receives the detected data. According to Hooke's Law, within the elastic limit, the elastic force F on the spring 32 is proportional to the deformation x of the spring 32, that is: F = k * x, where: F is the external force on the spring 32, that is, the pressure applied above the bearing plate 31. When the weight of the plate is ignored, F is equal to the pressure; k is the spring constant of the spring 32, in N / m, which is determined by parameters such as the material, diameter, and number of coils of the spring 32; x is the deformation of the spring 32, that is, the difference between the initial distance and the distance after compression between the two plates: x = x0 − x1, where x0 is the distance without pressure and x1 is the distance after compression. Therefore, if the spring constant k of the spring 32 is known, and the change in distance x between the two plates is detected by the sensor, the pressure F applied to the plate can be calculated by the formula.

[0028] The mounting block 1 is internally equipped with a drive assembly 5 for moving the ranging pulley mechanism 3 and changing the pressure borne by the ranging pulley mechanism 3. The drive assembly 5 includes a drive block 51, which moves within a moving groove at the bottom of the mounting block 1. The drive block 51 can drive the bearing plate 31 to move synchronously. A rack plate 52 is mounted on one side of the drive block 51 for moving the drive block 51. The rack plate 52 meshes with a gear 53 provided inside the mounting block 1, and the gear 53 can rotate under the action of the drive device. The drive device can be a drive motor, and the output shaft of the drive motor is connected to the transmission shaft of the gear 53 through a coupling.

[0029] The specific operation process of this invention is as follows: A crane is used to slowly lift the irregularly shaped steel-lined plastic storage tank to the top of the device. When the support roller 27 comes into contact with the outside of the irregularly shaped steel-lined plastic storage tank, under the action of the tank's own weight, the support roller 27 automatically rotates along the dovetail-shaped arc guide rail through the step-by-step linkage of the fourth arc block 25, the third arc block 24, the second arc block 23 and the first arc block 22, thus initially achieving contact with the outside of the tank.

[0030] After the tank is placed stably, the distance detector 35 of the distance measuring pulley mechanism 3 detects the change in distance between the bearing plate 31 and the pulley mounting plate 33. The control panel 6 calculates and displays the pressure value of each support point according to Hooke's Law. If the pressure distribution deviation exceeds 10%, the system will issue a prompt. When the pressure distribution is uneven, the drive component 5 is started through the control panel 6. The drive motor drives the gear 53 to rotate. The gear 53 meshes with the rack plate 52 to drive the drive block 51 to move along the bottom moving groove of the mounting block 1, thereby driving the bearing plate 31 and the tank to move synchronously. The pressure data on the control panel 6 is observed in real time until the pressure deviation of each support point is ≤5%, then the adjustment is stopped and the drive component is locked.

[0031] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A roller frame device for supporting a steel-lined plastic storage tank, comprising a mounting block (1), characterized in that, Also includes: The irregular support roller mechanism (2) is on the mounting block (1) to flexibly support the irregular steel-lined plastic storage tank. It is finely adjusted step by step according to the inclined generatrix of the conical tank or the variable curvature surface of the elliptical tank to lift the irregular steel-lined plastic storage tank. The distance measuring pulley mechanism (3) is located below the mounting block (1) and drives the mounting block (1) to move above the slide groove (4). The distance measuring pulley mechanism (3) uses the elastic deformation of the spring (32) and the distance detection pressure of the distance detector (35) to detect the pressure borne at its location. The drive assembly (5), located inside the mounting block (1), is used to drive the distance measuring pulley mechanism (3) to move and change the pressure borne by the distance measuring pulley mechanism (3).

2. The roller frame device for supporting a steel-lined plastic storage tank according to claim 1, characterized in that: The mounting block (1) has an arc-shaped mounting groove that works in conjunction with the irregular support roller mechanism (2), and a control panel (6) is provided on the outside of the mounting block (1).

3. A roller frame device for supporting a steel-lined plastic storage tank according to claim 1, characterized in that: The irregular support roller mechanism (2) includes an arc-shaped mounting block (21), and the arc-shaped mounting block (21) is installed inside the arc-shaped mounting groove. Two sets of first arc-shaped blocks (22) are provided above the arc-shaped mounting block (21), and the first arc-shaped blocks (22) can rotate in the arc-shaped groove opened in the arc-shaped mounting block (21) to cooperate with it.

4. A roller frame device for supporting a steel-lined plastic storage tank according to claim 3, characterized in that: Two sets of second arc blocks (23) are provided above the first arc block (22), and the second arc blocks (23) can rotate in the arc groove opened in the first arc block (22) to cooperate with it.

5. A roller frame device for supporting a steel-lined plastic storage tank according to claim 4, characterized in that: Two sets of third arc blocks (24) are provided above the second arc block (23), and the third arc blocks (24) can rotate in the arc groove opened in the second arc block (23) to cooperate with it.

6. A roller frame device for supporting a steel-lined plastic storage tank according to claim 5, characterized in that: Two sets of fourth arc blocks (25) are provided above the third arc block (24), and the fourth arc blocks (25) can rotate in the arc groove opened in the third arc block (24) to cooperate with it.

7. A roller frame device for supporting a steel-lined plastic storage tank according to claim 6, characterized in that: The end of the fourth arc-shaped block (25) is equipped with a roller mounting groove (26), and a support roller (27) is rotatably provided inside the roller mounting groove (26).

8. A roller frame device for supporting a steel-lined plastic storage tank according to claim 1, characterized in that: The distance measuring pulley mechanism (3) is provided in two sets. The distance measuring pulley mechanism (3) includes a support plate (31), and the bottom of the support plate (31) is connected to the pulley mounting plate (33) by a number of symmetrically arranged springs (32). The pulley mounting plate (33) is used to install the pulley (34), and the top of the pulley mounting plate (33) is provided with a distance detector (35) for detecting the distance between the pulley mounting plate (33) and the support plate (31).

9. A roller frame device for supporting a steel-lined plastic storage tank according to claim 1, characterized in that: The drive assembly (5) includes a drive block (51), and the drive block (51) moves in a moving groove opened at the bottom of the mounting block (1). The drive block (51) can drive the bearing plate (31) to move synchronously. A rack plate (52) for driving the drive block (51) to move is installed on one side of the drive block (51). The rack plate (52) meshes with a gear (53) provided inside the mounting block (1), and the gear (53) can rotate under the action of the drive device.

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