Liftable glass fiber reinforced plastic storage tank

Abstract

A liftable glass fiber reinforced plastic storage tank comprises a spherical tank body and a lifting device, the lifting device comprises a connecting supporting leg and a lifting supporting leg, the spherical tank body is connected with the connecting supporting leg, the lifting supporting leg comprises a shell and a lifting part arranged in the shell, and the connecting supporting leg is connected in an inner cavity of the shell in a sleeved mode and supported by the lifting part. The lifting part comprises a lifting block, a cam, a bottom block and a control rod, the cam is connected with the bottom block through a fixing frame, the upper end of the cam is connected with the lifting block, teeth are arranged on the edge of the lower end of the cam, a groove is formed in the upper end of the bottom block, a long-strip-shaped hole is formed in the shell, and the control rod penetrates through the long-strip-shaped hole to be horizontally inserted into the groove. A hole is correspondingly formed in the control rod, the stop hole is connected with the hole through a plug pin, a rack part meshed with the cam is arranged in the groove, a blind hole is concavely formed in the bottom block, and a limiting rod is connected to the bottom of the lifting block and connected with the blind hole. The designed and optimized lifting device comprises a connecting supporting leg and a lifting supporting leg, and lifting of the spherical tank is achieved through the lifting supporting leg.

Description

Technical Field

[0001] This invention relates to the field of fiberglass spherical tank technology, and more specifically to a liftable fiberglass storage tank. Background Technology

[0002] Fiberglass reinforced plastic (FRP) storage tanks are a type of non-metallic composite material tank made from high-quality resin and high-strength glass fiber as core raw materials, manufactured using a continuous winding molding process with precise microcomputer control. As a universal and core storage device across various industries, it not only possesses fundamental advantages such as corrosion resistance, high strength, long service life, flexible design, and strong processability, but also boasts outstanding characteristics such as light weight, convenient installation, good sealing performance, low maintenance costs, and wide adaptability to high and low temperatures. It can easily meet the storage needs of various complex media such as acid, alkali, and salt solutions, organic reagents, and liquid raw materials, and is suitable for different pressure, temperature, and capacity operating conditions. With these comprehensive advantages, FRP (fiberglass reinforced plastic) storage tanks have been widely used in many core industries such as chemical, environmental protection, food, pharmaceutical, printing and dyeing, petroleum, water treatment, and metallurgy, gradually replacing traditional storage tanks made of carbon steel, stainless steel, and ceramics. Compared to carbon steel tanks, they do not require frequent anti-corrosion maintenance, effectively avoiding the risk of rust and leakage; compared to stainless steel tanks, they have a more advantageous production cost and higher tolerance to corrosive media such as chloride ions, making them the preferred equipment for storage in various industries. FRP spherical tanks, as a type of FRP storage tank, are suitable for specific spherical storage scenarios and also use the aforementioned core materials and molding processes.

[0003] Fiberglass reinforced plastic (FRP) storage tanks are used in a wide range of applications, covering the storage and transfer of various liquid and gaseous materials, and are suitable for all scenarios from small and medium-sized workshop-level storage to large-scale engineering reserves. In actual operation, some small FRP storage tanks (including a small number of spherical models) require matching their installation height according to the actual site environment and the height of the feeding equipment. This ensures precise connection with raw material conveying pipelines, pumps, and other equipment, guaranteeing smooth and efficient feeding and discharging processes. Especially in scenarios such as chemical reagent storage, liquid raw material transfer, and environmental wastewater treatment, the lifting function of these small tanks allows for flexible adjustment of the tank height. This not only adapts to the operational needs of different workstations but also optimizes site space utilization, further improving the overall continuity and safety of operations. This fully demonstrates the core characteristics of FRP storage tanks: adaptability and flexible application.

[0004] Existing support structures are all at a fixed height, which cannot meet the requirements for raising and lowering the spherical tank. For example, domestic patent application number CN201911348714.0 discloses a double-layered liquid storage spherical tank. This double-layered liquid storage spherical tank includes an inner spherical tank, an outer spherical tank, multiple support columns, multiple inner reinforcing plates, and multiple outer support plates. Each inner reinforcing plate is fixedly attached to the inner circumferential wall of the inner spherical tank, and the fixing holes of the inner reinforcing plates are sealed and fixedly connected to the support columns, strengthening the connection between the support columns and the outer spherical tank. The outer support plates are located below the connection between the support columns and the outer spherical tank, with one end connected to the support column and the other end supporting the bottom of the outer spherical tank. The outer support plates, by horizontally connecting the support columns and the outer spherical tank respectively, serve a reinforcing function and reduce the stress at the connection between the support columns and the outer spherical tank. The structure of the above-mentioned double-layered liquid storage spherical tank, through its reinforced design, ensures the stability of the connection between the support columns and the outer spherical tank. Summary of the Invention

[0005] This invention provides a fiberglass spherical tank with real-time lifting function, which effectively solves the problem that existing fiberglass spherical tanks can only be at a fixed height.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: The invention includes a spherical tank body and a lifting device. The lifting device includes a connecting leg and a lifting leg. The spherical tank body is connected to the connecting leg. The lifting leg includes a housing and a lifting part disposed within the housing. The connecting leg is sleeved in the inner cavity of the housing and supported by the lifting part. The lifting part includes a lifting block, a cam, a bottom block, and a control rod. The cam is connected to the bottom block via a fixing bracket. The upper end of the cam is connected to the lifting block. The lower edge of the cam has teeth. The upper end of the bottom block has a groove. The housing has an elongated hole. The control rod passes through the elongated hole and is horizontally inserted into the groove. The bottom block has a stop hole on the groove wall. The control rod has a hole. The housing has a mating hole corresponding to the stop hole. The stop hole, the hole, and the mating hole are connected by a pin. The groove has a rack that meshes with the cam. The bottom block has a recessed blind hole. The bottom of the lifting block is connected to a limit rod, which is connected to the blind hole.

[0007] As a preferred embodiment of the present invention, at least two lifting parts are provided in the inner cavity of the outer shell from bottom to top. The bottom block is provided with a synchronization device on one side of the control rod. The synchronization device includes a synchronization rod with connecting hooks at both ends and a rotating connecting kit. The control rod is provided with a synchronization hole. In the synchronization connection position, the connecting hook is connected to the synchronization hole. The rotating connecting kit includes a bearing seat connected to the bottom block and a connecting rod connected to the bearing seat. The connecting rod extends outward from the elongated hole. The extended end of the connecting rod is connected to the clamping joint. The synchronization rod is engaged in the clamping joint.

[0008] As a preferred embodiment of the present invention, a transverse connecting rod is connected to the outside of the spherical tank body, a connecting ball is provided at the end of the transverse connecting rod, an oblong hole is provided on the outer shell, the transverse connecting rod passes through the oblong hole, and the connecting ball is disposed inside the outer shell.

[0009] As a preferred embodiment of the present invention, the synchronizing rod includes a first rod and a second rod that are sleeved together. The bottom of the first rod is provided with a connecting hole, and the top of the second rod is connected to a telescopic rod. The telescopic rod passes through the connecting hole and enters the inner cavity of the first rod. A partition is provided in the inner cavity of the first rod. An abutment plate is provided on the insertion end of the telescopic rod. The partition plate can be connected to the abutment plate. A spring is sleeved on the telescopic rod, and the spring is located between the abutment plate and the bottom of the first rod.

[0010] As a preferred embodiment of the present invention, the bottom block is provided with a pair of baffles on both sides of the upper end of the groove, and a channel is formed between the two baffles. The rack passes upward through the channel and meshes with the teeth. Both the rack and the control rod are limited by the baffles.

[0011] As a preferred embodiment of the present invention, the lifting block is provided with an upwardly recessed guide groove, the cam is engaged in the guide groove, and the guide groove is an arc-shaped groove with its center located at the camshaft contact point.

[0012] As a preferred embodiment of the present invention, the outer surface of the top of the cam is provided with an outwardly protruding damping arc strip.

[0013] As a preferred embodiment of the present invention, a buffer stop assembly is provided at the highest point of the bottom of the guide groove, and a side groove is provided on the side wall of the guide groove. The buffer stop assembly includes a sliding rod and an arc-shaped baffle. The arc-shaped baffle slides in the side groove through the sliding rod. One end of the arc-shaped baffle connected to the sliding rod abuts against the cam. A damping pad is provided on the arc-shaped baffle facing the end of the guide groove.

[0014] As a preferred embodiment of the present invention, the bottom block is provided with a transmission component consisting of a small gear and a large gear meshing with each other. The small gear meshes with the bottom of the control lever, and the large gear meshes with the bottom of the rack.

[0015] In summary, the present invention has the following beneficial effects.

[0016] 1. By changing the original fixed support structure connected to the spherical tank body, the lifting device is optimized to include connecting legs and lifting legs. The connecting legs are used to connect to the spherical tank body. The connecting legs are sleeved in the lifting legs and supported by the lifting part located in the lifting legs. By changing the support height of the connecting legs through the lifting part, the height of the entire lifting device can be changed, thereby realizing the lifting function of the spherical tank body. This makes the height of the spherical tank body adjustable so as to connect to conveying pipelines, silos, loading and unloading platforms or other spherical tanks of different heights.

[0017] 2. By designing multiple lifting sections, the overall lifting function is achieved through the lifting segments of each lifting section.

[0018] 3. Design a synchronization device to connect the control rods in two adjacent lifting sections, so that the lifting of multiple lifting sections can be controlled synchronously by controlling the pulling of only one control rod.

[0019] 4. By achieving different lifting heights, multiple spherical tanks can be adjusted to different heights, allowing multiple spherical tanks to be arranged in a staggered and compact manner in three-dimensional space, thus making efficient use of space and placing more spherical tanks in the same area. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of a liftable fiberglass storage tank at its highest point.

[0022] Figure 2 This is a schematic diagram of the overall structure of a liftable fiberglass storage tank at its lowest point.

[0023] Figure 3 This is a schematic diagram of a lifting device in a liftable fiberglass storage tank.

[0024] Figure 4 This is a schematic diagram of the lifting device in a liftable fiberglass storage tank from another angle.

[0025] Figure 5 for Figure 4 A magnified view showing the details at point A in the middle.

[0026] Figure 6 This is a cross-sectional view of a lifting device in a liftable fiberglass storage tank.

[0027] Figure 7 This is a cross-sectional view of the lifting section in a liftable fiberglass storage tank.

[0028] Figure 8 This is a schematic diagram of the assembly of the lifting block and the bottom block in a liftable fiberglass storage tank.

[0029] Figure 9 This is a schematic diagram of a liftable fiberglass storage tank with a transmission component in the lifting section.

[0030] Figure 10 This is a cross-sectional view of a synchronizing rod in a liftable fiberglass storage tank.

[0031] Figure 11 This is a cross-sectional view of an arc-shaped baffle in a liftable fiberglass storage tank.

[0032] In the diagram: 1. Spherical tank body; 2. Lifting device; 3. Connecting support leg; 4. Lifting support leg; 5. Outer shell; 6. Lifting part; 7. Lifting block; 8. Cam; 9. Bottom block; 10. Control rod; 11. Groove; 12. Long slot; 13. Stop hole; 14. Hole; 15. Rack part; 16. Blind hole; 17. Limit rod; 18. Synchronizing rod; 19. Synchronizing hole; 20. Connecting hook; 21. Bearing seat; 22. Connecting rod. 23. Clamping joint; 24. Lateral connecting rod; 25. Connecting ball; 26. Waist-shaped hole; 27. First rod; 28. Second rod; 29. ​​Telescopic rod; 30. Connecting hole; 31. Partition plate; 32. Abutment plate; 33. Spring; 34. Baffle plate; 35. Channel; 36. Guide groove; 37. Mating hole; 38. Sliding rod; 39. Arc-shaped baffle plate; 40. Damping pad; 41. Small gear; 42. Large gear; 43. Side groove. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Example 1

[0035] As attached Figure 1 To be continued Figure 11 The images shown are schematic diagrams of the entirety or partial aspects of a liftable fiberglass storage tank. (Attached) Figure 1 This is a schematic diagram showing the lifting fiberglass spherical tank at its highest position. (See attached diagram) Figure 2 This is a schematic diagram showing the state of the liftable fiberglass spherical tank in the raised / lowered position, and this is a synchronous lifting control scenario. Figure 2The pin is not shown in the drawing. In actual use, the pin can be inserted into the mating hole 37 in the outer shell 5 according to the required height. A liftable fiberglass storage tank includes a spherical tank body 1 and a lifting device 2. The lifting device 2 includes a connecting leg 3 and a lifting leg 4. The spherical tank body 1 is connected to the connecting leg 3. The lifting leg 4 includes an outer shell 5 and a lifting part 6 disposed in the outer shell 5. The connecting leg 3 is sleeved in the inner cavity of the outer shell 5 and supported by the lifting part 6. The lifting part 6 includes a lifting block 7, a cam 8, a bottom block 9 and a control rod 10. The cam 8 is connected to the bottom block 9 through a fixing frame. The upper end of the cam 8 is connected to the lifting block 7, and the lower end of the cam 8 is... The edge is provided with teeth, the upper end of the bottom block 9 is provided with a groove 11, the outer shell 5 is provided with an elongated hole 12, the control rod 10 passes through the elongated hole 12 and is horizontally inserted into the groove 11, and can slide in the groove 11. At the same time, the movement path of the control rod 10 is limited by the groove 11, so that the control rod 10 can only reciprocate in a straight line. The rack 15 moves with the control rod 10, and the cam 8 meshing with the rack 15 moves in a circular motion around the connecting shaft. During the circular motion, the lifting block 7 is pushed to different heights to achieve lifting.

[0036] The bottom block 9 has a stop hole 13 on the groove wall of the groove 11, and the control rod 10 has a corresponding hole 14. The outer shell 5 also has a mating hole 37 corresponding to the stop hole 13. The pin is inserted into the mating hole 37, the stop hole 13, and finally into the hole 14 from the outside to limit the rack 15, preventing the rack from slipping due to the excessive weight of the spherical tank body 1 after the height is adjusted, thus preventing accidents. The groove 11 has a rack 15 that meshes with the cam 8. The bottom block 9 has a recessed blind hole 16. The bottom of the lifting block 7 is connected to a limit rod 17, which is connected to the blind hole 16. The limit rod 17 keeps the lifting block 7 and the bottom block 9 relatively stationary in the horizontal direction.

[0037] By changing the original fixed support structure connected to the spherical tank body 1, the lifting device 2 is optimized to include a connecting leg 3 and a lifting leg 4. The connecting leg 3 is used to connect with the spherical tank body 1. The connecting leg 3 is sleeved in the lifting leg 4 and is supported by the lifting part 6 provided in the lifting leg 4. The height of the entire lifting device 2 is changed by changing the support height of the connecting leg 3 through the lifting part 6, thereby realizing the lifting function of the spherical tank body 1. This makes the height of the spherical tank body 1 adjustable so as to connect with conveying pipes, silos, loading and unloading platforms or other spherical tanks of different heights.

[0038] Furthermore, the connection point between the spherical tank body 1 and the connecting leg 3 is preferably located at a connection point below the equator. Alternatively, it can be located at one-third to one-half of the diameter of the spherical tank body 1. By achieving different lifting heights, multiple spherical tanks can be adjusted to different heights, allowing multiple spherical tanks to be arranged in a staggered and close manner in three-dimensional space, thus achieving effective space utilization and enabling more spherical tanks to be placed in the same space.

[0039] The inner cavity of the outer shell 5 is provided with at least two lifting parts 6 from bottom to top. By designing multiple lifting parts 6, the overall lifting function is achieved through the lifting segments of each lifting part 6. By achieving different lifting heights, multiple spherical tanks can be arranged closely at different heights, realizing space utilization and allowing more spherical tanks to be placed in the same floor area.

[0040] The base block 9 has a synchronization device on one side of the control rod 10. The synchronization device includes a synchronization rod 18 with connecting hooks 20 at both ends and a rotating connecting assembly. The control rod 10 has a synchronization hole 19. When in the synchronized connection position, the connecting hooks 20 connect with the synchronization holes 19. The synchronization device is designed to connect the control rods 10 in two adjacent lifting parts 6, so that the lifting of multiple lifting parts can be controlled synchronously by controlling the pull of only one control rod 10. The rotating connecting assembly includes a bearing seat 21 connected to the base block 9 and a connecting rod 22 connected to the bearing seat 21. The connecting rod 22 extends outward from the elongated hole 12, and the extended end of the connecting rod 22 connects to the clamping joint 23. The synchronization rod 18 is snapped into the clamping joint 23.

[0041] A transverse connecting rod 24 is connected to the outside of the spherical tank body 1. A connecting ball 25 is located at the end of the transverse connecting rod 24. An oblong hole 26 is provided on the outer shell 5. The transverse connecting rod 24 passes through the oblong hole 26, and the connecting ball 25 is located inside the outer shell 5. By designing the oblong hole 26, when the connecting ball 25 enters the connecting leg 3 through the oblong hole 26, the transverse connecting rod 24 can rotate within the oblong hole 26, achieving a non-rigid connection between the spherical tank body 1 and the lifting device 2. This ensures that multiple lifting devices can be at different heights simultaneously. When multiple lifting devices are at different heights at the same time, the spherical tank body 1 will tilt due to the different support heights, thus facilitating better docking with conveying pipes, silos, or loading / unloading platforms at different heights. This avoids material residue and conveying blockages caused by height differences, improving loading and unloading efficiency.

[0042] The synchronizing rod 18 includes a first rod 27 and a second rod 28 that are nested together. The bottom of the first rod 27 has a connecting hole 30, and the top of the second rod 28 is connected to a telescopic rod 29. The telescopic rod 29 passes through the connecting hole 30 and enters the inner cavity of the first rod 27. A partition 31 is provided in the inner cavity of the first rod 27. An abutment plate 32 is provided on the insertion end of the telescopic rod 29. The partition 31 can connect with the abutment plate 32. A spring 33 is sleeved on the telescopic rod 29, and the spring 33 is located between the abutment plate 32 and the bottom of the first rod 27. The telescopic arrangement between the first rod 27 and the second rod 28 solves the problem of the two control rods 10 having different distances at different lifting heights.

[0043] The bottom block 9 has a pair of baffles 34 on both sides of the upper end of the groove 11, and a channel 35 is formed between the two baffles 34. The rack 15 passes through the channel 35 upward and meshes with the teeth. Both the rack 15 and the control rod 10 are limited by the baffles 34.

[0044] The lifting block 7 is provided with an upwardly recessed guide groove 36, and the cam 8 is engaged in the guide groove 36. The guide groove 36 is an arc-shaped groove with its center at the shaft contact point of the cam 8.

[0045] The outer surface of the top of the cam 8 is provided with an outwardly protruding damping arc strip, which is a damping protrusion with an arc shape.

[0046] A buffer stop assembly is provided at the highest point of the bottom of the groove 11 of the guide groove 36. A side groove 11 is provided on the side wall of the guide groove 36. The buffer stop assembly includes a sliding rod 38 and an arc-shaped baffle 39. The arc-shaped baffle 39 is slidably connected to the side groove 11 through the sliding rod 38. One end of the arc-shaped baffle 39 connected to the sliding rod 38 abuts against the cam 8. A damping pad 40 is provided on the arc-shaped baffle 39 facing the end of the guide groove 36.

[0047] As attached Figure 9 As shown, in this embodiment, the control lever 10 and rack 15 are designed separately. Using them in conjunction with the transmission assembly makes operating the control lever easier. The base block 9 contains a transmission assembly consisting of a small gear 41 and a large gear 42 meshing with each other. An intermediate gear can also be added between the small gear 41 and the large gear 42, depending on the actual situation. The small gear 41 meshes with the bottom of the control lever 10, and the large gear 42 meshes with the bottom of the rack 15.

[0048] In the description of this invention, it should be understood that the terms "front and back," "left and right," etc., 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 invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0049] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0050] The above description is merely a preferred 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 under the technical guidance of 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. A liftable fiberglass storage tank, characterized in that, The device includes a spherical tank body (1) and a lifting device (2). The lifting device (2) includes a connecting leg (3) and a lifting leg (4). The spherical tank body (1) is connected to the connecting leg (3). The lifting leg (4) includes a housing (5) and a lifting part (6) disposed in the housing (5). The connecting leg (3) is sleeved in the inner cavity of the housing (5) and supported by the lifting part (6). The lifting part (6) includes a lifting block (7), a cam (8), a bottom block (9), and a control rod (10). The cam (8) is connected to the bottom block (9) through a fixing frame. The upper end of the cam (8) is connected to the lifting block (7). The lower edge of the cam (8) is provided with teeth. The upper end of the bottom block (9) is provided with a groove (11). The outer casing (5) is provided with an elongated hole (12). The control rod (10) passes through the elongated hole (12) and is horizontally inserted into the groove (11). The bottom block (9) is provided with a stop hole (13) at the groove wall of the groove (11). The control rod (10) is provided with a hole (14). The outer casing (5) is provided with a mating hole (37) corresponding to the stop hole (13). The stop hole (13), the hole (14) and the mating hole (37) are connected by a pin. The groove (11) is provided with a rack (15) that meshes with the cam (8). The bottom block (9) is recessed with a blind hole (16). The bottom of the lifting block (7) is connected to a limit rod (17). The limit rod (17) is connected to the blind hole (16).

2. The liftable fiberglass storage tank according to claim 1, characterized in that, The inner cavity of the outer shell (5) is provided with at least two lifting parts (6) from bottom to top. The bottom block (9) is provided with a synchronization device on one side of the control rod (10). The synchronization device includes a synchronization rod (18) with connecting hooks (20) at both ends and a rotating connection kit. The control rod (10) is provided with a synchronization hole (19). When in the synchronization connection position, the connecting hook (20) is connected to the synchronization hole (19). The rotating connection kit includes a bearing seat (21) connected to the bottom block (9) and a connecting rod (22) connected to the bearing seat (21). The connecting rod (22) extends outward from the elongated hole (12). The extended end of the connecting rod (22) is connected to the clamp (23). The synchronization rod (18) is snapped into the clamp (23).

3. A liftable fiberglass storage tank according to claim 2, characterized in that, The outer side of the spherical tank body (1) is connected to a horizontal connecting rod (24), and the end of the horizontal connecting rod (24) is provided with a connecting ball (25). The outer shell (5) is provided with a waist-shaped hole (26), the horizontal connecting rod (24) passes through the waist-shaped hole (26), and the connecting ball (25) is located inside the outer shell (5).

4. A liftable fiberglass storage tank according to claim 2 or 3, characterized in that, The synchronizing rod (18) includes a first rod (27) and a second rod (28) that are sleeved together. The first rod (27) has a connecting hole (30) at its bottom. The second rod (28) is connected to a telescopic rod (29) at its top. The telescopic rod (29) passes through the connecting hole (30) and enters the inner cavity of the first rod (27). A partition (31) is provided in the inner cavity of the first rod (27). A contact plate (32) is provided at the insertion end of the telescopic rod (29). The partition (31) can be connected to the contact plate (32). A spring (33) is sleeved on the telescopic rod (29). The spring (33) is located between the contact plate (32) and the bottom of the first rod (27).

5. A liftable fiberglass storage tank according to claim 4, characterized in that, The bottom block (9) has a pair of baffles (34) on both sides of the upper end of the groove (11), and a channel (35) is formed between the two baffles (34). The rack (15) passes through the channel (35) upward and meshes with the teeth. The rack (15) and the control rod (10) are both limited by the baffles (34).

6. A liftable fiberglass storage tank according to claim 1, characterized in that, The lifting block (7) is provided with an upwardly recessed guide groove (36), and the cam (8) is engaged in the guide groove (36). The guide groove (36) is an arc-shaped groove with its center at the shaft contact point of the cam (8).

7. A liftable fiberglass storage tank according to claim 6, characterized in that, The cam (8) has an outwardly protruding damping arc strip on its top outer surface.

8. A liftable fiberglass storage tank according to claim 7, characterized in that, A buffer stop assembly is provided at the highest point of the bottom of the groove (11) of the guide groove (36). A side groove (43) is provided on the side wall of the guide groove (36). The buffer stop assembly includes a sliding rod (38) and an arc-shaped baffle (39). The arc-shaped baffle (39) slides in the side groove (43) through the sliding rod (38). One end of the arc-shaped baffle (39) connected to the sliding rod (38) abuts against the cam (8). A damping pad (40) is provided on the arc-shaped baffle (39) facing the end of the guide groove (36).

9. A liftable fiberglass storage tank according to claim 1, characterized in that, The bottom block (9) is provided with a transmission assembly consisting of a small gear (41) and a large gear (42) meshing with each other. The small gear (41) meshes with the bottom of the control lever (10), and the large gear (42) meshes with the bottom of the rack (15).

Images