A spiral adjusting device for a hydraulic pressure test pier of a liquid tank and its adjusting process

Abstract

The present invention discloses a spiral adjustment device for a liquid tank hydrostatic test pier and its adjustment process, including a bearing plate and a spiral adjustment component. The storage cylinder is connected to the telescopic column through the telescopic cylinder, and one end of the telescopic column away from the telescopic cylinder is connected to one side wall of the support plate. For this spiral adjustment device of the liquid tank hydrostatic test pier, the motor drives the turntable to rotate, so that the driving block on the turntable can push the top cover in the spiral adjustment component to rotate. The rotating top cover will drive the screw rod to rotate through the mounting seat and the connecting block. During the forward and reverse rotation process, the screw rod will move up and down in the threaded sleeve, and then the support height of the spiral adjustment component can be adjusted up and down. Compared with the commonly used pad or wedge adjustment method, the spiral adjustment process can conveniently adjust the support pier to the required height and levelness. At the same time, the spiral adjustment components distributed in a triangular shape can ensure that the tank body bearing seat is evenly stressed. Its operation is simple and convenient, with high precision and good effect, thus facilitating the improvement of work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid tank detection, and particularly to a spiral adjustment device for a liquid tank hydrostatic test pier and an adjustment process thereof. Background Art

[0002] The liquid tank is fully called an independent liquid tank, which is used to load liquefied petroleum gas or liquefied natural gas in a low-temperature state on a liquefied gas carrier. The liquid tank is independent of the hull structure and does not form a part of the hull structure, so it is also called a self-supporting independent liquid tank; the IGC rules promulgated by the International Maritime Organization classify independent liquid tanks into three types: A, B, and C. Each type of liquid tank needs to be provided with corresponding insulation protection on its outer surface. For the insulation structure of type B liquid tanks, the "International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk" stipulates that on the basis of ensuring the heat insulation performance, it is necessary to have a certain anti-leakage function. Therefore, before it is loaded onto the ship, it is necessary to check the tightness of the tank body by injecting ballast water and gas on a hydrostatic test platform.

[0003] During the test, to ensure that the special wooden blocks are evenly stressed, the base and the wooden blocks need to be completely fitted. It is necessary to place a base with high manufacturing precision between the wooden blocks of the tank body bearing seat and the test platform ground. However, due to the uneven ground, it is impossible to ensure that multiple bases and multiple wooden blocks are completely and simultaneously fitted when directly placed. For example, a typical liquid tank support device in the prior art is an independent liquid tank support device with the publication number CN110203336A. If shims are used for adjustment, not only is the adjustment workload large, but it is also difficult to ensure that all bases meet the requirement of complete fitting. As a result, the base with a lower height is less stressed, and the one with a higher height is more stressed, which may cause destructive deformation of the tank body and result in greater economic losses. For example, a typical liquid tank support device in the prior art is an independent liquid tank support device with the publication number CN113602417A. In view of the above problems, it is necessary to improve the existing equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a spiral adjustment device for a liquid tank hydrostatic test pier and an adjustment process thereof, so as to solve the problem proposed in the above background art that during the test, to ensure that the special wooden blocks are evenly stressed, the base and the wooden blocks need to be completely fitted. It is necessary to place a base with high manufacturing precision between the wooden blocks of the tank body bearing seat and the test platform ground. However, due to the uneven ground, it is impossible to ensure that multiple bases and multiple wooden blocks are completely and simultaneously fitted when directly placed. If shims are used for adjustment, not only is the adjustment workload large, but it is also difficult to ensure that all bases meet the requirement of complete fitting. As a result, the base with a lower height is less stressed, and the one with a higher height is more stressed, which may cause destructive deformation of the tank body and result in greater economic losses.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: a spiral adjustment device for a liquid tank hydrostatic test pier and an adjustment process thereof, including a bearing plate and a spiral adjustment assembly.

[0006] A fixing seat is fixedly connected to the bottom of the bearing plate, a storage groove is formed in the fixing seat, a storage cylinder is connected in the storage groove, the storage cylinder is connected to a telescopic column through a telescopic cylinder, and one end of the telescopic column away from the telescopic cylinder is connected to one side wall of the supporting plate;

[0007] The bottom of the screw adjustment assembly is connected to the auxiliary movement assembly, and the screw adjustment assembly is arranged outside the supporting plate. The screw adjustment assembly includes a cushion plate, a steel structure support, a support base, a threaded sleeve, a screw, a connecting block, an oil cup, a mounting seat and a sealing plug. Steel structure supports are symmetrically arranged on the top of the cushion plate, and the steel structure supports are connected through the support base. Connecting holes are formed in the steel structure supports, and the connecting holes are connected to the support blocks through bolts. At the same time, the support blocks are connected to the other side wall of the supporting plate. A threaded sleeve is arranged above the support base, and a screw is arranged in the threaded sleeve. The top of the screw is connected to the mounting seat through the connecting block, and the mounting seat is connected to the transmission block through the top cover. The top cover contacts the driving block, and the driving block is mounted on the turntable. The turntable is connected to the output end of the motor, and the motor is mounted in the groove on the top of the supporting plate.

[0008] Preferably, the storage cylinders are distributed in a circular array in the storage groove, and the storage cylinders are slidably connected to the telescopic cylinders.

[0009] Preferably, limit blocks are connected to one ends of the telescopic cylinder and the telescopic column, and the limit blocks are slidably connected in the chutes on the inner walls of the storage cylinder and the telescopic cylinder.

[0010] Preferably, an oil cup is connected to one side wall of the threaded sleeve, and a sealing plug is snap-fitted in the oil cup.

[0011] Preferably, the screw is threadedly connected in the threaded sleeve, and the threaded sleeve is fixedly connected to the inner side of the steel structure support.

[0012] Preferably, the top cover is snap-fitted on the outside of the mounting seat, and the top cover is connected to the mounting seat through a first connecting member.

[0013] Preferably, the transmission block is rotatably connected to the top of the top cover, and deviation chutes are formed in the side wall of the transmission block.

[0014] Preferably, a traction block is slidably connected in the deviation chute, the traction block is connected to an electric slider, the electric slider is mounted on an electric slide rail, and the electric slide rail is arranged in a protective cover. The protective cover is fixedly connected to the bottom of the bearing plate, and the protective cover is distributed in a triangular shape outside the fixing seat. At the same time, the fixing seat is fixedly connected to the center position of the bottom of the bearing plate.

[0015] Preferably, the auxiliary moving component includes a connecting plate, a second connecting member, a sphere, a base, and a positioning rod. The connecting plate is fixedly connected to the bottom of the backing plate, and the connecting plate is connected to the base through the second connecting member. At the same time, spheres are equally spaced at the bottom of the base, and positioning rods are equally spaced at the bottom of the connecting plate, and the positioning rods are snap-connected to the top of the base.

[0016] The adjustment process of the spiral adjustment device for the liquid tank hydrostatic test pier includes the following steps:

[0017] S1: Before using the device, the staff can add lubricating oil into the threaded sleeve through the oil cup to facilitate ensuring the smooth movement of the screw up and down. After adding, the staff can use the sealing plug to cover and block the oil cup.

[0018] S2: The electric slider drives the driving block, the top cover at its bottom, and the entire spiral adjustment component to move outward in the same direction to a suitable position through the traction block.

[0019] S3: The sphere can prevent the bottom of the spiral adjustment component from directly contacting the ground when the spiral adjustment component moves, thereby avoiding wear of the spiral adjustment component. At the same time, when the spiral adjustment component moves, it will drive the support plate to move through the support block. During the movement of the support plate, the telescopic column and the telescopic cylinder will be stretched in sequence until the support plate 22 moves to the required support position as it follows.

[0020] S4: After the adjustment is completed, the staff can control the motor on the top of the support plate to drive the turntable to rotate. During the rotation of the turntable, the top cover outside the mounting seat will be pushed through the driving block.

[0021] S5: During the rotation of the top cover, the connecting block and the screw will be driven to rotate through the mounting seat. During the rotation of the screw, it will move upward along the threaded sleeve, so that the height adjustment of the spiral adjustment component and the entire device can be realized.

[0022] S6: During the adjustment process, the staff can use an external total station to assist in measuring the adjustment height to facilitate ensuring the accuracy of the adjustment. After the adjustment is completed, the liquid tank can be placed on the bearing plate at its top for the pressure test work.

[0023] Compared with the prior art, the beneficial effects of the present invention are: The spiral adjustment device for the liquid tank hydrostatic test pier and its adjustment process

[0024] (1) By the combined use of the spiral adjustment component, the driving block, the turntable and the motor, the present invention can effectively solve the problem that during the test, in order to ensure uniform force on the special wooden block, the base and the wooden block need to be completely fitted. A base with high manufacturing precision needs to be placed between the wooden block under the load-bearing seat of the tank body and the ground of the test platform. However, due to the uneven ground, when directly placed, it is impossible to ensure that multiple bases are completely and simultaneously fitted with multiple wooden blocks. If shims are used for adjustment, not only is the adjustment workload large, but it is also difficult to ensure that all bases meet the requirement of complete fitting. As a result, the base with a lower height bears less force, and the one with a larger height bears more force, which in turn causes destructive deformation of the tank body and results in greater economic losses. The motor drives the turntable to rotate, so that the driving block on the turntable can push the top cover in the spiral adjustment component to rotate. The rotating top cover will drive the screw rod to rotate through the mounting seat and the connecting block. During the forward and reverse rotation process, the screw rod will move up and down in the threaded sleeve, and thus the support height of the spiral adjustment component can be adjusted up and down. In addition, when this device is used in combination with a total station, each spiral adjustment component can be accurately adjusted to the required height and levelness, and the accuracy can reach the millimeter level. Compared with the commonly used shim or wedge adjustment method, the spiral adjustment process can conveniently adjust the support pier to the required height and levelness. At the same time, the spiral adjustment components distributed in a triangular shape can ensure uniform force on the tank body load-bearing seat. Its operation is simple and convenient, time-saving and labor-saving, with high precision and good effect, thus facilitating the improvement of work efficiency.

[0025] (2) By the combined use of the electric slider, the electric slide rail, the storage cylinder, the telescopic cylinder and the telescopic column, the present invention can effectively solve the problem that the spiral adjustment components arranged in a triangular shape cannot adjust their structures according to the size of the liquid tank, that is, the actual support requirements, and their flexibility and universality are poor. The electric slider can drive the transmission block through the traction block to drive the spiral adjustment component to move along the electric slide rail, so that the distance between the spiral adjustment component and the fixed seat can be adjusted, that is, the support position of the spiral adjustment component can be adjusted. And the three groups of spiral adjustment components after adjustment are still distributed in a triangular shape, which is convenient for improving the flexibility, universality and practicability of the device structure on the premise of ensuring stable support, and thus facilitating it to meet diverse support requirements. At the same time, when the spiral adjustment component moves, it will pull the telescopic cylinder and the telescopic column to extend through the support block, so that the tray and the motor above it for driving the height adjustment can move along with the movement of the spiral adjustment component, which is convenient for driving and adjusting the spiral adjustment components at different positions, and thus facilitating the improvement of the linkage between the various structures of the device and optimizing its structure.

[0026] (3) By using the auxiliary moving component and the top cover in combination, the present invention can effectively solve the problem that the components for driving and supporting the movement of the screw adjustment component are easily worn, resulting in the inability of its adjustment and support structure to work properly. When the top cover is severely worn due to long-term contact and driving with the driving block, the staff can pull the transmission block off the top of the top cover, and then the first connecting piece can be disassembled to replace the top cover, thus facilitating the normal progress of the adjustment and driving work. At the same time, the sphere in the auxiliary moving component can play a role in moving support when the screw adjustment component moves, thereby facilitating the improvement of the smoothness of the movement of the screw adjustment component. When the sphere is worn, the staff can disassemble the second connecting piece to replace the base with the sphere installed, and the replacement process is relatively simple. Compared with the existing overall replacement support device, the present application can specifically replace the components that are worn and cannot be used normally, thereby facilitating the reduction of economic losses caused by wear and further improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic main sectional structure view of the present invention;

[0028] Figure 2 is a schematic main structure view of the connection relationship between the screw adjustment component, the auxiliary moving component and the top cover of the present invention;

[0029] Figure 3 For the present invention Figure 1 is an enlarged structure view at A in;

[0030] Figure 4 For the present invention Figure 1 is an enlarged structure view at B in;

[0031] Figure 5 is a schematic overall top sectional structure view of the positions of the storage cylinder, the telescopic cylinder and the telescopic column in the storage groove of the present invention.

[0032] In the figure: 1, bearing plate; 2, fixed seat; 3, storage groove; 4, storage cylinder; 5, telescopic cylinder; 6, telescopic column; 7, support block; 8, screw adjustment component; 801, backing plate; 802, steel structure bracket; 803, support base; 804, threaded sleeve; 805, screw; 806, connecting block; 807, oil cup; 808, mounting seat; 809, sealing plug; 9, top cover; 10, first connecting piece; 11, transmission block; 12, deviation chute; 13, auxiliary moving component; 1301, connecting plate; 1302, second connecting piece; 1303, sphere; 1304, base; 1305, positioning rod; 14, driving block; 15, turntable; 16, motor; 17, traction block; 18, electric slider; 19, electric slide rail; 20, protective cover; 21, limit card block; 22, support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] Please refer to Figures 1-5 , the present invention provides a technical solution: a screw adjustment device for a liquid tank hydrostatic test pier and its adjustment process. Embodiment 1

[0035] As Figure 1 , Figure 2 and Figure 5 shown, a fixing seat 2 is fixedly connected to the bottom of the bearing plate 1, and a receiving groove 3 is formed in the fixing seat 2. At the same time, a receiving cylinder 4 is connected in the receiving groove 3. The receiving cylinder 4 is connected to a telescopic column 6 through a telescopic cylinder 5, and one end of the telescopic column 6 away from the telescopic cylinder 5 is connected to a side wall of the support plate 22.

[0036] In a further embodiment, the receiving cylinders 4 are distributed in an annular array in the receiving groove 3, and the receiving cylinders 4 are slidably connected to the telescopic cylinders 5.

[0037] Specifically, the receiving cylinders 4 and the telescopic cylinders 5 are convenient for meeting the support requirements of the support plate 22 at different positions, that is, the motor 16, so as to facilitate the driving of the screw adjustment components 8 at different positions by the motor 16.

[0038] In a further embodiment, one ends of the telescopic cylinder 5 and the telescopic column 6 are both connected with a limit clamping block 21, and the limit clamping block 21 is slidably connected in a chute on the inner walls of the receiving cylinder 4 and the telescopic cylinder 5.

[0039] Specifically, the limit clamping block 21 plays a role in restricting the telescopic cylinder 5 and the telescopic column 6, so as to facilitate preventing the telescopic cylinder 5 and the telescopic column 6 from falling out of the receiving cylinder 4 and the telescopic cylinder 5 respectively, thereby facilitating improving the rationality of its structure.

[0040] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the bottom of the spiral adjustment component 8 is connected to the auxiliary movement component 13, and the spiral adjustment component 8 is arranged outside the pallet 22. The spiral adjustment component 8 includes a backing plate 801, a steel structure bracket 802, a support base 803, a threaded sleeve 804, a screw rod 805, a connecting block 806, an oil cup 807, a mounting seat 808, and a sealing plug 809. Steel structure brackets 802 are symmetrically arranged on the top of the backing plate 801. At the same time, the steel structure brackets 802 are connected by the support base 803. Connecting holes are provided on the steel structure brackets 802, and the connecting holes are connected to the support block 7 by bolts. At the same time, the support block 7 is connected to the other side wall of the pallet 22. A threaded sleeve 804 is arranged above the support base 803, and a screw rod 805 is arranged inside the threaded sleeve 804. The top of the screw rod 805 is connected to the mounting seat 808 by the connecting block 806, and the mounting seat 808 is connected to the transmission block 11 through the top cover 9. The top cover 9 contacts the driving block 14, and the driving block 14 is installed on the turntable 15. The turntable 15 is connected to the output end of the motor 16, and the motor 16 is installed in the groove on the top of the pallet 22.

[0041] In a further embodiment, an oil cup 807 is connected to one side wall of the threaded sleeve 804, and a sealing plug 809 is snap-fitted in the oil cup 807.

[0042] Specifically, the staff can add lubricating oil into the threaded sleeve 804 through the oil cup 807, so as to facilitate ensuring the smoothness of the up and down movement of the screw rod 805. At the same time, when the oil cup 807 is not needed, the staff can use the sealing plug 809 to cover and block the oil cup 807, so as to facilitate preventing it from being polluted, and at the same time avoid dust entering the threaded sleeve 804 through the oil cup 807 and adhering to the screw rod 805, thereby affecting the normal operation of the screw rod 805.

[0043] In a further embodiment, the screw rod 805 is threadedly connected in the threaded sleeve 804, and the threaded sleeve 804 is fixedly connected to the inner side of the steel structure bracket 802.

[0044] Specifically, it is convenient to make the screw rod 805 lift during rotation, so as to complete the support requirements at different heights.

[0045] In a further embodiment, the top cover 9 is snap-fitted on the outside of the mounting seat 808, and the top cover 9 is connected to the mounting seat 808 through the first connecting member 10.

[0046] Specifically, when the top cover 9 is worn due to long-term contact with the driving block 14, the staff can remove it from the top of the mounting seat 808 by disassembling the first connecting member 10, so that it can be replaced, thereby facilitating ensuring the normal development of the driving work, that is, the adjustment work of the spiral adjustment component 8.

[0047] In a further embodiment, the transmission block 11 is rotatably connected to the top of the top cover 9, and a deviation chute 12 is formed in the side wall of the transmission block 11.

[0048] Specifically, after the lifting of the screw rod 805, the traction block 17 will move along with it in the deviation chute 12 to meet the traction requirements at different heights.

[0049] In a further embodiment, a traction block 17 is slidably connected in the deviation chute 12, and the traction block 17 is connected to an electric slider 18. The electric slider 18 is installed on an electric slide rail 19, and the electric slide rail 19 is arranged in a protective cover 20. The protective cover 20 is fixedly connected to the bottom of the bearing plate 1, and the protective cover 20 is distributed in a triangular shape outside the fixed seat 2. At the same time, the fixed seat 2 is fixedly connected to the center of the bottom of the bearing plate 1.

[0050] Specifically, during the actual working process, the electric slider 18 drives the transmission block 11, the top cover 9 at its bottom, and the screw adjustment assembly 8 to move outward in the same direction to a suitable position through the traction block 17. The auxiliary moving assembly 13 can assist during the movement of the screw adjustment assembly 8. At the same time, when the screw adjustment assembly 8 moves, it will drive the support plate 22 to move through the support block 7. During the movement of the support plate 22, the telescopic columns 6 and the telescopic cylinders 5 will be stretched in sequence. After the adjustment is completed, the staff can control the motor 16 on the top of the support plate 22 to drive the turntable 15 to rotate. During the rotation of the turntable 15, it will push the top cover 9 outside the mounting seat 808 to rotate through the driving block 14. During the rotation of the top cover 9, it will drive the connecting block 806 and the screw rod 805 to rotate through the mounting seat 808. During the rotation of the screw rod 805, it will move upward along the threaded sleeve 804, so as to realize the height adjustment of the screw adjustment assembly 8 and the whole device. During the adjustment process, the staff can use an external total station to assist in measuring the adjusted height, so as to facilitate ensuring the accuracy of the adjustment. Embodiment Two

[0051] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the foregoing technical features and makes a further specific description.

[0052] As Figure 1 and Figure 2 shown, in a further embodiment, the auxiliary moving assembly 13 includes a connecting plate 1301, a second connecting member 1302, a sphere 1303, a base 1304, and a positioning rod 1305. The connecting plate 1301 is fixedly connected to the bottom of the cushion plate 801, and the connecting plate 1301 is connected to the base 1304 through the second connecting member 1302. At the same time, spheres 1303 are equidistantly distributed at the bottom of the base 1304.

[0053] In a further embodiment, positioning rods 1305 are equidistantly distributed at the bottom of the connecting plate 1301, and the positioning rods 1305 are snap-fitted to the top of the base 1304.

[0054] Preferably, the positioning rod 1305 facilitates the relationship between the compact base 1304 and the connecting plate 1301, thereby facilitating the assurance of the stability of its support connection.

[0055] Specifically, when the sphere 1303 moves with the screw adjustment assembly 8, it can avoid direct contact between its bottom and the ground, thereby preventing the screw adjustment assembly 8 from being worn, and further facilitating the extension of the service life of the device. When the sphere 1303 is worn and cannot be used normally to assist in movement and support, the staff can detach the second connecting member 1302 to remove the base 1304 from the connecting plate 1301 at the bottom of the screw adjustment assembly 8, so that this part can be replaced.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spiral adjustment device for a hydraulic pressure test pier of a liquid tank, comprising a bearing plate (1) and a spiral adjustment assembly (8), characterized in that: A fixed seat (2) is fixedly connected to the bottom of the bearing plate (1), and a storage groove (3) is formed in the fixed seat (2). At the same time, a storage cylinder (4) is connected in the storage groove (3). The storage cylinder (4) is connected to a telescopic column (6) through a telescopic cylinder (5), and one end of the telescopic column (6) away from the telescopic cylinder (5) is connected to one side wall of a support plate (22); The bottom of the spiral adjustment assembly (8) is connected to an auxiliary movement assembly (13), and the spiral adjustment assembly (8) is arranged outside the support plate (22). The spiral adjustment assembly (8) includes a backing plate (801), a steel structure bracket (802), a support base (803), a threaded sleeve (804), a screw rod (805), a connecting block (806), an oil cup (807), a mounting seat (808) and a sealing plug (809). Steel structure brackets (802) are symmetrically arranged on the top of the backing plate (801). At the same time, the steel structure brackets (802) are connected through a support base (803). Connecting holes are formed in the steel structure brackets (802), and the connecting holes are connected to a support block (7) through bolts. At the same time, the support block (7) is connected to the other side wall of the support plate (22). A threaded sleeve (804) is arranged above the support base (803), and a screw rod (805) is arranged in the threaded sleeve (804). The top of the screw rod (805) is connected to a mounting seat (808) through a connecting block (806), and the mounting seat (808) is connected to a transmission block (11) through a top cover (9). The top cover (9) contacts a driving block (14), and the driving block (14) is installed on a turntable (15). The turntable (15) is connected to the output end of a motor (16), and the motor (16) is installed in a groove on the top of the support plate (22). An oil cup (807) is connected to one side wall of the threaded sleeve (804), and a sealing plug (809) is snap-connected in the oil cup (807). The transmission block (11) is rotatably connected to the top of the top cover (9), and a deviation sliding groove (12) is formed in the side wall of the transmission block (11). A traction block (17) is slidably connected in the deviation sliding groove (12), and the traction block (17) is connected to an electric slider (18). The electric slider (18) is installed on an electric slide rail (19), and the electric slide rail (19) is arranged in a protective cover (20). The protective cover (20) is fixedly connected to the bottom of the bearing plate (1), and the protective cover (20) is distributed in a triangular shape outside the fixed seat (2). At the same time, the fixed seat (2) is fixedly connected to the center position of the bottom of the bearing plate (1).

2. The spiral adjustment device for the hydraulic pressure test pier of a liquid tank according to claim 1, characterized in that: The storage cylinders (4) are distributed in an annular array in the storage groove (3), and the storage cylinders (4) are slidably connected to the telescopic cylinders (5).

3. The spiral adjustment device for the hydraulic pressure test pier of a liquid tank according to claim 1, characterized in that: Limit blocks (21) are connected to one ends of the telescopic cylinders (5) and the telescopic columns (6), and the limit blocks (21) are slidably connected in the sliding grooves on the inner walls of the storage cylinders (4) and the telescopic cylinders (5).

4. A spiral adjusting device for a liquid tank hydrostatic test pier according to claim 1, characterized in that: The screw rod (805) is threadedly connected inside the threaded sleeve (804), and the threaded sleeve (804) is fixedly connected to the inner side of the steel structure bracket (802).

5. The spiral adjusting device for the hydraulic pressure test pier of a liquid tank according to claim 1, wherein: The top cover (9) is snap - connected to the outside of the mounting seat (808), and the top cover (9) is connected to the mounting seat (808) through the first connecting piece (10).

6. The spiral adjustment device for the hydraulic pressure test pier of a liquid tank according to claim 1, wherein: The auxiliary moving assembly (13) includes a connecting plate (1301), a second connecting piece (1302), a sphere (1303), a base (1304) and a positioning rod (1305). The connecting plate (1301) is fixedly connected to the bottom of the backing plate (801), and the connecting plate (1301) is connected to the base (1304) through the second connecting piece (1302). At the same time, spheres (1303) are evenly distributed at the bottom of the base (1304), positioning rods (1305) are evenly distributed at the bottom of the connecting plate (1301), and the positioning rods (1305) are snap - connected to the top of the base (1304).

7. The adjustment process of a screw adjustment device for a hydraulic pressure test pier of a liquid tank according to claim 6, characterized in that: It includes the following steps: S1: Before using the device, the staff can add lubricating oil into the inside of the threaded sleeve (804) through the oil cup (807) to facilitate ensuring the smoothness of the up - and - down movement of the screw rod (805). After adding, the staff can use the sealing plug (809) to cover the oil cup (807). S2: The electric slider (18) drives the transmission block (11), the top cover (9) at its bottom, and the screw - adjusting assembly (8) as a whole to move outward to a suitable position through the traction block (17). S3: The spheres (1303) can prevent the bottom of the screw - adjusting assembly (8) from directly contacting the ground when the screw - adjusting assembly (8) moves, thus avoiding the wear of the screw - adjusting assembly (8). At the same time, when the screw - adjusting assembly (8) moves, it will drive the support plate (22) to move through the support block (7). During the movement of the support plate (22), the telescopic column (6) and the telescopic cylinder (5) will be stretched in sequence until the support plate (22) follows and moves to the required support position. S4: After the adjustment is completed, the staff can control the motor (16) on the top of the support plate (22) to drive the turntable (15) to rotate. During the rotation of the turntable (15), it will push the top cover (9) outside the mounting seat (808) to rotate through the driving block (14). S5: During the rotation of the top cover (9), it will drive the connecting block (806) and the screw rod (805) to rotate through the mounting seat (808). During the rotation of the screw rod (805), it will move upward along the threaded sleeve (804), so as to realize the height adjustment of the screw - adjusting assembly (8) and the device as a whole. S6: During the adjustment process, the staff can use an external total station to assist in measuring the adjustment height to facilitate ensuring the accuracy of the adjustment. After the adjustment is completed, the liquid tank can be placed on the bearing plate (1) on the top of the fixed seat (2) for pressure - testing work.

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