A device and method for preventing grout leakage at the bottom of concrete column formwork

Abstract

This invention relates to the field of building construction technology, specifically to a device and method for preventing grout leakage at the bottom of concrete column formwork. The device includes a column formwork, a bottom sealing component, and an assembly component. The lower end of the column formwork is equipped with an adapting base, which includes a first assembly base and a second assembly base. During the bottom grout leakage prevention treatment of the column formwork, the adapting base can be height-adjusted using the adapting adjustment component, ensuring it remains horizontal in different ground environments. Simultaneously, the height adjustment can also serve as a bottom extension adjustment mechanism for the column formwork during its construction, providing stable support without affecting the pouring of the concrete column. Then, with the cooperation of the bottom sealing component, the bottom area prone to grout leakage is sealed with an air-filled inflatable seal that fits the ground better, preventing severe grout leakage at the bottom of the column and eliminating the "rotten root" problem.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a device and method for preventing grout leakage at the bottom of concrete column formwork. Background Technology

[0002] With the continuous development of the construction industry, standardized construction has become a trend. Whether it is a residential building or an industrial plant, concrete structures are used as supports. When the frame columns of the concrete support structure are poured, the steel structure needs to be built with formwork, and then concrete is poured into the mold and the column is waited for to take shape.

[0003] In existing technologies, the frame columns of concrete support structures are mainly stabilized by clamping and fixing the mold with tie bars or external clamps during pouring. However, due to the complex construction site environment and uneven pouring ground, grout leakage occurs at the bottom of the mold after it is erected due to gaps. This not only wastes materials but also leads to "rotten roots" after the column is completed. Repairing these issues wastes materials and manpower, increases construction costs, and seriously affects the construction process. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for preventing grout leakage at the bottom of concrete column formwork, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for preventing grout leakage at the bottom of a concrete column formwork, comprising:

[0006] The column template has an adaptive base at its lower end. The adaptive base includes a first assembly base and a second assembly base. The combination of the first assembly base and the second assembly base forms a square frame structure. Adaptive adjustment components are provided on the opposite sides of the first assembly base and the second assembly base. The adaptive adjustment components include two adjustment screws.

[0007] The bottom sealing assembly is located at the lower end of the first and second assembly bases. The bottom sealing assembly includes two sealing pressure plates and two sealing airbags. Each sealing airbag has an inflation assembly on one side. The inflation assembly includes an inflation tube and a one-way valve.

[0008] The assembly component is located on one side of the first assembly base and the second assembly base, and includes four connecting sleeves and four pressure plates.

[0009] Preferably, the upper ends of the first and second assembly bases are provided with docking slots, the lower end of the column template is inserted into the docking slots, and the lower ends of the first and second assembly bases are provided with horizontal support plates, and the cross-sectional area of ​​the support plates is greater than that of the first and second assembly bases.

[0010] Preferably, the upper end of the support base plate is provided with support screw sleeves on both sides, and the center of each support screw sleeve is provided with a first threaded hole. The adjusting screw is inserted into the first threaded hole of the support screw sleeve through the thread, and the adjusting screw is provided with a contact plate at the lower end of the support screw sleeve and the support base plate.

[0011] Preferably, the supporting base plate is provided with a reinforcing boss near the upper end of the first and second assembly bases. The lower end of the reinforcing boss and the lower inner side of the first and second assembly bases are respectively provided with a second storage groove and a first storage groove. The upper end of the sealing pressure plate is provided with vertical support guide plates on both sides, and the two support guide plates of the sealing pressure plate are respectively vertically inserted into the first and second storage grooves.

[0012] Preferably, the lower center of each sealing plate is provided with an inner groove, and the upper ends of the two sealing airbags are respectively filled into the inner grooves of the two sealing plates.

[0013] Preferably, the reinforcing boss has several expansion grooves at the lower end of the supporting base plate, and the upper end of the sealing pressure plate located on one side of the inner groove is provided with several adjusting bushings, and the upper ends of the several adjusting bushings are respectively vertically and movably inserted with several sealing adjusting bolts.

[0014] Preferably, the upper end of the telescopic groove is provided with a second threaded hole through the reinforcing boss, and a sealing adjusting bolt is vertically inserted into the upper end of the adjusting bushing. The sealing adjusting bolt is provided with a constraint block on one side inside the adjusting bushing, and the upper end of the sealing adjusting bolt passes through the second threaded hole through the thread.

[0015] Preferably, the upper end of the sealing airbag insertion groove is vertically inserted through the sealing pressure plate and the reinforcing boss and connected to the inflation tube. A one-way valve is located at the upper end of the inflation tube through the reinforcing boss. The one-way valve includes a valve body, a one-way spring and a sealing ball. The one-way spring and the sealing ball are located in the valve body, and one side of the one-way spring and the sealing ball abuts against each other.

[0016] Preferably, two assembly reinforcing rails are provided on opposite sides of the first and second assembly bases and on opposite sides of the two reinforcing bosses. Four connecting sleeves are respectively fitted onto four sets of opposite two assembly reinforcing rails. The assembly reinforcing rails are T-shaped structures. The upper center of each connecting sleeve is provided with an assembly bolt that rotates vertically through a rotating block. Each assembly bolt is threaded with a lower pressure plate. Two counter-pressure rods are vertically and symmetrically provided at the lower end of the lower pressure plate. The lower ends of the two counter-pressure rods are respectively movably inserted through the connecting sleeves and fitted onto the upper end of the assembly reinforcing rails. Each of the two assembly reinforcing rails has a counter-pressure groove on the side near the counter-pressure rod. Each counter-pressure groove has a counter-pressure inclined surface on one side. The two counter-pressure rods are respectively inserted into the two counter-pressure grooves and contact the counter-pressure inclined surface.

[0017] A method for preventing grout leakage at the bottom of a concrete column formwork includes the following steps:

[0018] Step 1: When the column needs to be poured, the first and second assembly bases are assembled at the location where the pouring is required using four connecting sleeves. During assembly, the eight assembly reinforcement rails of the first and second assembly bases are connected. Then, the four connecting sleeves are respectively fitted into the middle of the two oppositely arranged assembly reinforcement rails. Then, the assembly bolts are rotated, and the lower pressure plate and counter-pressure rod are lowered by controlling the threads of the assembly bolts and inserted into the counter-pressure grooves of the two assembly reinforcement rails. Under the action of the counter-pressure inclined surface, the first and second assembly bases are relatively pressed together, maintaining the stability of the support of the first and second assembly bases. All assembly components are high-strength steel structures.

[0019] Step 2: After the first and second assembly bases are assembled, adjust the height of the adjusting screw extending from the bottom of the support plate according to the flatness of the ground to make the adaptable base in a horizontal position. Then, build the column template on the top of the adaptable base. At the same time, the height of the adaptable base can be adjusted according to the height of the column template.

[0020] Step 3: Then rotate several sealing adjustment bolts so that the sealing adjustment bolts control the sealing pressure plate along the support guide plate, and the lower end of the sealing airbag contacts the ground. As long as the drop is not too large, the lower end of the sealing airbag can make initial contact with the ground through the metal deformation of the sealing pressure plate.

[0021] Step 4: Then, high-pressure gas is injected into the sealing airbag through the inflation tube and one-way valve. After the sealing airbag expands, it fits the uneven ground better, and the leak-proof casting column is then poured.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] When performing bottom grout leakage prevention treatment on column formwork, the height of the adaptable base can be adjusted by the adaptable adjustment component, so that it can maintain a horizontal posture when used in different ground environments. At the same time, the height adjustment can also serve as a bottom extension adjustment mechanism for column formwork during column formwork construction, providing stable support for the column formwork without affecting the construction and pouring of concrete columns. Then, with the cooperation of the bottom sealing component, the bottom of the column is sealed with airbag expansion contact at the ground in a more closely fitted manner, avoiding serious grout leakage at the bottom of the column and eliminating the problem of "rotten roots". Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the construction state structure of the present invention;

[0025] Figure 2 This is a first-view schematic diagram of the base structure adapted to the present invention;

[0026] Figure 3 This is a second-view schematic diagram of the base structure adapted to the present invention;

[0027] Figure 4 This is a schematic diagram of the side section structure of the base adapted to the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of part A;

[0029] Figure 6 This is a side sectional view of the connection between the connecting sleeve and the assembled reinforcing rail of the present invention;

[0030] Figure 7 This is a schematic diagram of the first assembled base structure of the present invention.

[0031] In the diagram: 1. Column template; 2. Adaptive base; 3. First assembly base; 4. Second assembly base; 5. Support base plate; 6. Reinforcing boss; 7. Connecting slot; 8. Supporting screw sleeve; 9. Adjusting screw; 10. Contact plate; 11. First storage slot; 12. Second storage slot; 13. Sealing pressure plate; 14. Supporting guide plate; 15. Inner groove; 16. Sealing airbag; 17. Adjusting bushing; 18. Sealing adjustment bolt; 19. Constraint block; 20. Inflation pipe; 21. One-way valve; 22. One-way spring; 23. Sealing ball; 24. Assembled reinforcing rail; 25. Connecting sliding sleeve; 26. Assembled bolt; 27. Pressure bar; 28. Pressure groove; 29. ​​Lower pressure plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see the appendix Figures 1-7 This application provides the following technical solutions.

[0034] Example 1: A device for preventing grout leakage at the bottom of a concrete column formwork includes a column formwork 1. The lower end of the column formwork 1 is provided with an adapting base 2. The adapting base 2 includes a first assembly base 3 and a second assembly base 4. The combination of the first assembly base 3 and the second assembly base 4 forms a square frame structure. Adaptive adjustment components are provided on opposite sides of the first assembly base 3 and the second assembly base 4. Each adaptive adjustment component includes two adjusting screws 9. The upper ends of both the first assembly base 3 and the second assembly base 4 are provided with mating slots 7. The lower end of the column formwork 1 is inserted into the mating slots 7. The lower ends of both the first assembly base 3 and the second assembly base 4 are horizontally provided with supporting base plates 5, and the cross-sectional area of ​​the supporting base plates 5 is larger than that of the first assembly base 3. The cross-sectional area of ​​the base 3 and the second assembly base 4 is determined. Supporting screw sleeves 8 are vertically installed on both sides of the upper end of the supporting base plate 5. Each supporting screw sleeve 8 has a vertically penetrating first threaded hole in its center. Adjusting screws 9 are threaded through and inserted into the first threaded holes of the supporting screw sleeves 8. The adjusting screws 9 also have a horizontally connected contact plate 10 at the lower end of the supporting base plate 5, penetrating the supporting screw sleeves 8 and the supporting base plate 5. The height of the adjusting screws 9 extending from the lower end of the supporting base plate 5 is adjusted according to the flatness of the ground to ensure the adapting base 2 is in a horizontal position. The column template 1 is then erected on top of the adapting base 2. The height of the adapting base 2 can be adjusted according to the height of the column template 1. The number of adjusting screws 9 is a multiple of two, and not less than four.

[0035] A bottom sealing assembly is installed to seal and prevent grout leakage at the bottom of the column during the pouring process. The bottom sealing assembly is located at the lower end of the first assembly base 3 and the second assembly base 4. The bottom sealing assembly includes two sealing pressure plates 13 and two sealing airbags 16, and each sealing airbag 16 has an inflation assembly on one side. The inflation assembly includes an inflation pipe 20 and a one-way valve 21. The supporting base plate 5 has a reinforcing boss 6 near the upper end of the first assembly base 3 and the second assembly base 4. The lower end of the reinforcing boss 6 and the first assembly base 3 are connected to the second assembly base 4. The lower inner side of the assembly base 4 is provided with a second storage groove 12 and a first storage groove 11. The upper sides of the sealing pressure plate 13 are provided with vertical support guide plates 14, and the two support guide plates 14 of the sealing pressure plate 13 are vertically inserted into the first storage groove 11 and the second storage groove 12 respectively. The lower center of the sealing pressure plate 13 is provided with an inner groove 15. The upper ends of the two sealing airbags 16 are filled and inserted into the inner grooves 15 of the two sealing pressure plates 13 respectively. After the sealing airbags 16 expand, they can fit more closely to the ground and prevent grout leakage at the bottom.

[0036] The reinforced boss 6 has several expansion grooves that penetrate the lower end of the support base plate 5. The upper end of the sealing pressure plate 13 located on one side of the inner groove 15 is provided with several vertically arranged adjusting bushings 17. The upper ends of the several adjusting bushings 17 are vertically and movably inserted with several sealing adjusting bolts. The upper end of the expansion groove has a second threaded hole that penetrates the reinforced boss 6. The upper end of the adjusting bushing 17 is vertically inserted with a sealing adjusting bolt 18. The sealing adjusting bolt 18 is placed on one side of the adjusting bushing 17 with a constraint block 19. The upper end of the sealing adjusting bolt 18 passes through the second threaded hole through the thread. By rotating the several sealing adjusting bolts 18, the sealing adjusting bolts 18 control the sealing pressure plate 13 to move along the support guide plate 14. The lower end of the sealing airbag 16 contacts the ground. As long as the drop is not large, the lower end of the sealing airbag 16 can initially contact the ground through the metal deformation of the sealing pressure plate 13.

[0037] The upper end of the sealing airbag 16 inserted into the inner groove 15 vertically penetrates the sealing pressure plate 13 and the reinforcing boss 6 and is connected to the inflation tube 20. The one-way valve 21 is located at the upper end of the inflation tube 20 penetrating the reinforcing boss 6. The one-way valve 21 includes a valve body, a one-way spring 22 and a sealing ball 23. The one-way spring 22 and the sealing ball 23 are located in the valve body, and one side of the one-way spring 22 and the sealing ball 23 abut against each other. Then, high-pressure gas is injected into the sealing airbag 16 through the inflation tube 20 and the one-way valve 21. After the sealing airbag 16 expands, it fits the uneven ground better, and the anti-leakage pouring column is performed to prevent the column from rotting at the root. After the first assembly base 3 and the second assembly base 4 are removed, the structural pressure marks at the bottom can be easily covered during the later surface construction, such as tiling, puttying, plastering lines, etc.

[0038] An assembly component is provided, located on the side of the first assembly base 3 and the second assembly base 4 close to each other. The assembly component includes four connecting sleeves 25 and four lower pressure plates 29. Two assembly reinforcing rails 24 are provided on the opposite side of the first assembly base 3 and the second assembly base 4, and on the opposite side of the two reinforcing bosses 6. The four connecting sleeves 25 are respectively fitted with four sets of opposite sets of two assembly reinforcing rails 24. The assembly reinforcing rails 24 have a T-shaped structure. The upper center of each connecting sleeve 25 is provided with an assembly bolt 26 that rotates vertically through a rotating block. The lower pressure plate 29 is threaded onto each assembly bolt 26. The lower end of the lower pressure plate 29 is provided with two vertically symmetrical pressure rods 27. The lower ends of the two pressure rods 27 are respectively movable. The sliding sleeve 25 is connected to the upper end of the assembly reinforcing rail 24. Each of the two assembly reinforcing rails 24 has a pressure groove 28 on the side near the pressure rod 27. Each side of the pressure groove 28 has a pressure slope. The two pressure rods 27 are respectively inserted into the two pressure grooves 28 and contact the pressure slope. Through the connection between the sliding sleeve 25 and the two assembly reinforcing rails 24, the first assembly base 3 and the second assembly base 4 can be stably maintained in front, back, left, right and gap after assembly. The assembly components are all high-strength steel structures. The length and size of the sliding sleeve 25 and the assembly reinforcing rail 24 can be adjusted as needed. After the assembly is completed, the bottom sealing pressure plate 13 and sealing airbag 16 can provide stable support for the column template 1.

[0039] A method for preventing grout leakage at the bottom of a concrete column formwork includes the following steps:

[0040] Step 1: When the column needs to be poured, the first assembly base 3 and the second assembly base 4 are assembled at the location where the pouring is required using four connecting sleeves 25. During assembly, the eight assembly reinforcing rails 24 of the first assembly base 3 and the second assembly base 4 are connected. Then, the four connecting sleeves 25 are respectively fitted into the middle of the two oppositely arranged assembly reinforcing rails 24. Then, the assembly bolts 26 are rotated, and the lower pressure plate 29 and the counter-pressure rod 27 are lowered by controlling the threads of the assembly bolts 26 and inserted into the counter-pressure grooves 28 of the two assembly reinforcing rails 24. Under the action of the counter-pressure slope, the first assembly base 3 and the second assembly base 4 are relatively pressed together, keeping the support of the first assembly base 3 and the second assembly base 4 stable. All assembly components are high-strength steel structures.

[0041] Step 2: After the first assembly base 3 and the second assembly base 4 are assembled, adjust the height of the adjusting screw 9 extending from the lower end of the support base plate 5 according to the flatness of the ground, so that the adaptable base 2 is in a horizontal position. Then, build the column template 1 on the upper end of the adaptable base 2. At the same time, the height of the adaptable base 2 can be adjusted according to the height of the column template 1.

[0042] Step 3: Then rotate several sealing adjustment bolts 18 so that the sealing adjustment bolts 18 control the sealing pressure plate 13 to move along the support guide plate 14 and the lower end of the sealing airbag 16 to contact the ground. As long as the drop is not too large, the lower end of the sealing airbag 16 can make initial contact with the ground through the metal deformation of the sealing pressure plate 13.

[0043] Step 4: Then, high-pressure gas is injected into the sealing airbag 16 through the inflation pipe 20 and the one-way valve 21. After the sealing airbag 16 expands, it fits the uneven ground better, and the anti-leakage casting column is then poured.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing grout leakage at the bottom of a concrete column formwork, characterized in that, include: The column template (1) is provided with an adaptation base (2) at its lower end. The adaptation base (2) includes a first assembly base (3) and a second assembly base (4). The combination of the first assembly base (3) and the second assembly base (4) forms a square frame structure. The first assembly base (3) and the second assembly base (4) are provided with adaptation adjustment components on opposite sides. The adaptation adjustment components include two adjustment screws (9). Bottom sealing assembly, the bottom sealing assembly is located at the lower end of the first assembly base (3) and the second assembly base (4). The bottom sealing assembly includes two sealing pressure plates (13) and two sealing airbags (16). Each sealing airbag (16) has an inflation assembly on one side. The inflation assembly includes an inflation tube (20) and a one-way valve (21). The assembly assembly is located on one side close to the first assembly base (3) and the second assembly base (4). The assembly assembly includes four connecting sleeves (25) and four pressure plates (29). Both the lower ends of the first assembly base (3) and the second assembly base (4) are provided with horizontal support plates (5); The supporting base plate (5) is provided with a reinforcing boss (6) near the upper end of the first assembly base (3) and the second assembly base (4). The lower end of the reinforcing boss (6) and the lower inner side of the first assembly base (3) and the second assembly base (4) are respectively provided with a second storage groove (12) and a first storage groove (11). The upper end of the sealing pressure plate (13) is provided with a vertically arranged support guide plate (14) on both sides. The two support guide plates (14) of the sealing pressure plate (13) are vertically inserted into the first storage groove (11) and the second storage groove (12) respectively. The lower center of each sealing pressure plate (13) is provided with an inner groove (15), and the upper ends of the two sealing airbags (16) are respectively filled into the inner grooves (15) of the two sealing pressure plates (13). The reinforcing boss (6) has several expansion grooves at the lower end of the supporting base plate (5). The upper end of the sealing pressure plate (13) located on the side of the inner groove (15) is vertically provided with several adjusting bushings (17). The upper ends of the several adjusting bushings (17) are vertically and movably inserted with several sealing adjusting bolts (18).

2. The device for preventing grout leakage at the bottom of a concrete column formwork according to claim 1, characterized in that: The upper ends of the first assembly base (3) and the second assembly base (4) are provided with docking slots (7), the lower end of the column template (1) is inserted into the docking slots (7), and the cross-sectional area of ​​the support base plate (5) is greater than the cross-sectional area of ​​the first assembly base (3) and the second assembly base (4).

3. The device for preventing grout leakage at the bottom of a concrete column formwork according to claim 2, characterized in that: The upper end of the support base plate (5) is provided with support screw sleeves (8) on both sides. The center of each support screw sleeve (8) is provided with a first threaded hole. The adjusting screw (9) is inserted into the first threaded hole of the support screw sleeve (8) through the thread. The adjusting screw (9) passes through the support screw sleeve (8) and the lower end of the support base plate (5) is provided with a contact plate (10).

4. The device for preventing grout leakage at the bottom of a concrete column formwork according to claim 3, characterized in that: The upper end of the expansion groove is provided with a second threaded hole through the reinforcing boss (6). The upper end of the adjusting bushing (17) is vertically inserted with a sealing adjusting bolt (18). The sealing adjusting bolt (18) is placed inside the adjusting bushing (17) with a constraint block (19) on one side. The upper end of the sealing adjusting bolt (18) passes through the second threaded hole through the thread.

5. The device for preventing grout leakage at the bottom of a concrete column formwork according to claim 4, characterized in that: The upper end of the sealing airbag (16) inserted into the inner groove (15) vertically penetrates the sealing pressure plate (13) and the reinforcing boss (6) and is connected to the inflation tube (20). The one-way valve (21) is located at the upper end of the inflation tube (20) penetrating the reinforcing boss (6). The one-way valve (21) includes a valve body, a one-way spring (22) and a sealing ball (23). The one-way spring (22) and the sealing ball (23) are located in the valve body, and one side of the one-way spring (22) and the sealing ball (23) abut against each other.

6. The device for preventing grout leakage at the bottom of a concrete column formwork according to claim 5, characterized in that: Two assembly reinforcing rails (24) are provided on opposite sides of the first assembly base (3) and the second assembly base (4) and on opposite sides of the two reinforcing bosses (6). Four connecting sleeves (25) are respectively fitted onto four sets of opposite two assembly reinforcing rails (24). The assembly reinforcing rails (24) are T-shaped. The upper center of each connecting sleeve (25) is provided with an assembly bolt (26) that rotates vertically through a self-rotating block. Each assembly bolt (26) is provided with a lower pressure plate through a threaded connection. 29) The lower end of the pressure plate (29) is vertically and symmetrically provided with two pressure rods (27). The lower ends of the two pressure rods (27) are respectively movably inserted and connected to the upper end of the assembled reinforcing rail (24) through the sliding sleeve (25). The two assembled reinforcing rails (24) are provided with pressure grooves (28) on the side near the pressure rods (27). The pressure grooves (28) are provided with pressure slopes on one side. The two pressure rods (27) are respectively inserted into the two pressure grooves (28) and contact the pressure slopes.

7. A method for using the device for preventing grout leakage at the bottom of a concrete column formwork as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: When the column needs to be poured, the first assembly base (3) and the second assembly base (4) are assembled at the position where the pouring is required. During assembly, the eight assembly reinforcing rails (24) of the first assembly base (3) and the second assembly base (4) are connected. Then, the four connecting sliding sleeves (25) are respectively fitted into the middle of the two relatively set assembly reinforcing rails (24). Then, the assembly bolts (26) are rotated. The lower pressure plate (29) and the counter-pressure rod (27) are lowered by controlling the thread of the assembly bolts (26) and inserted into the counter-pressure grooves (28) of the two assembly reinforcing rails (24). Under the action of the counter-pressure slope, the first assembly base (3) and the second assembly base (4) are relatively pressed together to keep the support of the first assembly base (3) and the second assembly base (4) stable. The assembly components are all high-strength steel structures. Step 2: After the first assembly base (3) and the second assembly base (4) are assembled, adjust the height of the adjusting screw (9) extending from the bottom of the support base plate (5) according to the flatness of the ground so that the adaptable base (2) is in a horizontal position. Then, build the column template (1) on the top of the adaptable base (2). At the same time, the height of the adaptable base (2) can be adjusted according to the height of the column template (1). Step 3: Then rotate several sealing adjustment bolts (18) so that the sealing adjustment bolts (18) control the sealing pressure plate (13) along the support guide plate (14) and the lower end of the sealing airbag (16) contacts the ground. As long as the drop is not too large, the lower end of the sealing airbag (16) can initially contact the ground through the metal deformation of the sealing pressure plate (13). Step 4: Then, high-pressure gas is injected into the sealing airbag (16) through the inflation tube (20) and the one-way valve (21). After the sealing airbag (16) expands, it fits the uneven ground better and is used to pour the anti-leakage column.

Images