Matts-shaped reinforcing template device for super-large-diameter cylindrical foundation

Abstract

The invention relates to the technical field of building foundation construction, and discloses an ultra-large-diameter cylindrical foundation reinforcing formwork device shaped like a Chinese character'tian '. The reinforcing mechanism is used for enhancing the stability of the overall structure of the column foundation formwork; and the supporting mechanism is used for preventing the column foundation mold from displacing. By means of the mode that the multiple groups of scattered arc-shaped formworks of the column foundation formwork are spliced, after the bearing platform is poured and solidified, the arc-shaped formworks can be detached, recycled and repeatedly utilized, the detached arc-shaped formworks are easy to transport, and the arc-shaped formworks serving as pouring formwork forming plates of the bearing platform and the surface of each arc-shaped formwork are of a wavy structure, so that in the concrete pouring process, the arc-shaped formworks are not prone to deformation. Stress generated by flowing and diffusing of concrete can be dispersed on the inner wall of the uniform column foundation formwork so as to enhance the overall strength of the column foundation formwork, and the stress generated by flowing and diffusing of the concrete at the joint can be dispersed to the sunken positions on the two sides in the mode that the waves at the joint of the arc-shaped formworks protrude towards the interior of the column foundation formwork.

Description

Technical Field

[0001] The invention relates to the technical field of building foundation construction, and in particular to a field-shaped reinforcement template device for an extra-large diameter cylindrical foundation. Background Art

[0002] As my country's liquor market continues to expand, major liquor companies have expanded production, resulting in the continuous expansion of liquor storage scale.

[0003] As one of the main equipment for wine storage, the safety and stability of large stainless steel wine tanks are of vital importance. As the foundation of the wine tank, the super-large diameter cylindrical foundation is a key part of the structural construction, which plays a decisive role in the overall stability and bearing capacity of the wine tank. The reinforcement construction of the foundation formwork is directly related to the construction safety and molding quality of the wine tank foundation. In order to solve the construction difficulties of reinforcing the super-large diameter cylindrical foundation formwork, an super-large diameter cylindrical foundation field reinforcement formwork device was developed during the construction process, which effectively solved the construction difficulties such as super-large diameter cylindrical foundation formwork reinforcement, structural deformation, and poor concrete molding quality. The construction method is simple, safe and reliable, achieving the purpose of reducing construction costs and improving construction quality. Summary of the invention

[0004] The purpose of the present invention is to provide an application technology of a super-large diameter cylindrical foundation field-shaped reinforcement formwork device to solve the construction problems of difficult reinforcement of super-large cylindrical foundation formwork, easy deformation of structural construction, and poor concrete molding quality.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The invention provides a super-large diameter cylindrical foundation field-shaped reinforcement template device, comprising a column base template, which is used as a casting template for a cap;

[0007] A reinforcement mechanism is used to enhance the stability of the overall structure of the column base formwork;

[0008] Support mechanism, used to prevent displacement of column base formwork.

[0009] The column base mold is composed of a plurality of sets of arc-shaped templates spliced ​​together to form a cylindrical cylinder. The surfaces on both sides of the arc-shaped templates are both arranged in a wavy shape to disperse the stress diffused by the casting material, and the wavy shape at the joints between the arc-shaped templates bulges toward the inside of the column base mold.

[0010] Preferably, a splicing groove is provided at one end of each of the arc-shaped templates, and a plurality of sets of T-shaped splicing keys are fixedly connected to the other end of each arc-shaped template, wherein the T-shaped splicing keys are used to cooperate with the splicing groove for splicing, and the inner wall of the splicing groove is fixedly connected with limit blocks for limiting the positions on both sides of each T-shaped splicing key.

[0011] Preferably, an abutment block is slidably connected to the inner wall of the limit block, a support spring is fixedly connected to the position between the abutment block and the inner wall of the limit block, and the abutment block is used to abut against a T-shaped splicing key.

[0012] Preferably, a notch is provided on the outer arc surface of the arc-shaped template corresponding to each position above the limit block, for the T-shaped splicing key to pass through and enter the splicing groove.

[0013] Preferably, the reinforcement mechanism comprises a plurality of groups of vertical arc keels, which are arranged at the splicing position between each arc template and fixedly connected to the arc template by bolts, so as to reinforce the splicing between the arc templates.

[0014] Preferably, the outer wall of the column base mold is provided with multiple groups of transverse annular keels, and each vertical arc keel is provided with a groove at the intersection of the transverse annular keel, and the transverse annular keel is clamped and fixedly connected with the transverse annular keel by bolts.

[0015] Preferably, two high-toughness steel belts are provided inside the transverse annular keel to enhance the strength of the transverse annular keel.

[0016] Preferably, the supporting mechanism comprises a plurality of groups of supporting plates, wherein the plurality of groups of supporting plates are respectively fixedly connected to the bottom of each group of vertical arc-shaped keels, and an anti-sliding block is fixedly connected to one end of the supporting plate away from the vertical arc-shaped keel, and a connecting seat is fixedly connected to the top of each group of vertical arc-shaped keels, and the connecting seat is hinged to an electric cylinder telescopic rod through a hinge block, and the telescopic end of the electric cylinder telescopic rod is hinged to a sliding block, and the outer wall of the supporting plate at the corresponding position of the sliding block is slidably connected.

[0017] Preferably, the two sides of the inclined surface of each support plate are fixedly connected with a first air cylinder, the inner wall of the first air cylinder is slidably connected with a piston plate, the surface of the piston plate is connected with a ground rod, and the ground rod extends to the outside of the first air cylinder and is inclined toward the ground.

[0018] Preferably, the piston plate is located on one side of the ground rod and is fixedly connected to the inner wall of the first air cylinder with a return spring, the positions on both sides of each group of sliding blocks are fixedly connected to extrusion blocks, and the position of the anti-sliding block corresponding to each extrusion block is fixedly connected to a second air cylinder, the inner wall of the second air cylinder is a piston rod, and the second air cylinder is connected to the first air cylinder through an air pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention connects multiple groups of arc-shaped templates of the column base formwork so that after the foundation is poured and solidified, the arc-shaped templates can be disassembled and recycled for repeated use, and the disassembled arc-shaped templates are easy to transport. The arc-shaped templates used as the casting template of the foundation have a wavy surface structure. During the concrete pouring process, the stress generated by the flow and diffusion of concrete will be dispersed on the inner wall of the uniform column base formwork to enhance the overall strength of the column base formwork. The wavy joints between the arc-shaped templates bulge toward the inside of the column base formwork, which can disperse the stress generated by the flow and diffusion of concrete at the connection to the depressions on both sides to protect the weaker parts of the joints between the arc-shaped templates.

[0021] 2. The present invention inserts a T-shaped splicing key into the splicing groove and prevents the T-shaped splicing key from being separated from the splicing groove by limiting the position of the limit block to ensure the stability of the arc-shaped template splicing. An abutment block is provided on the inner wall of the limit block and supported by a support spring. After the T-shaped splicing key slides between the limit blocks, the tension of the support spring pushes the abutment block to abut the T-shaped splicing key, so that a traction is generated at the splicing of the arc templates to tighten the splicing surface between the arc templates to ensure the sealing of the splicing.

[0022] 3. The present invention uses bolts to fix the vertical arc keels at the joints of the arc formwork, so as to improve the strength of the joints of the arc formwork to ensure that the positions of the joints of the arc formwork do not shift or deform during the foundation construction process. A plurality of groups of transverse annular keels are sleeved on the outer wall of the column base formwork, and the transverse annular keels are fixed with bolts at the intersecting positions of the vertical arc keels to enhance the stability and strength of the overall structure of the column base formwork.

[0023] 4. The present invention installs a support plate and an electric cylinder telescopic rod at the position of the vertical arc keel outside the column base mold, so that the vertical arc keel, the support plate and the electric cylinder telescopic rod form a triangular structure, thereby further enhancing the stability of the column base mold structure. When the electric cylinder telescopic rod is extended to form a triangular support, the electric cylinder telescopic rod drives the connected slider to slide on the support plate, and drives the extrusion block to press the piston rod into the second air cylinder, thereby squeezing the air of the second air cylinder from the air pipe into the first air cylinder, making it convenient to extrude the piston plate in the first air cylinder connected to the ground rod, so that the ground rod is inserted into the ground. By adding positioning diagonal braces at the intersecting position of the horizontal annular keel and the vertical arc keel on the outside of the column base mold for reinforcement, the arc template of the column base mold can be effectively prevented from shifting during the concrete pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the overall appearance of the present invention;

[0026] Figure 2 It is a schematic diagram of the splicing of the arc-shaped template in the present invention;

[0027] Figure 3 It is a structural schematic diagram of the reinforcement mechanism in the present invention;

[0028] Figure 4 It is a structural display diagram of the support mechanism in the present invention;

[0029] Figure 5 The present invention Figure 4 A magnified image of point A;

[0030] Figure 6 It is a schematic diagram of the structure of the T-shaped splicing key in the present invention;

[0031] Figure 7 It is a diagram showing the internal structure of the limit block in the present invention.

[0032] The accompanying drawings are marked as follows: 1. Column base mold; 11. Arc template; 12. Splicing groove; 121. Limit block; 122. Abutment block; 123. Support spring; 13. T-shaped splicing key; 14. Notch; 2. Reinforcement mechanism; 21. Vertical arc keel; 22. Horizontal annular keel; 221. High-toughness steel belt; 3. Support mechanism; 31. Support plate; 311. Anti-sliding block; 32. Electric cylinder telescopic rod; 321. Connecting seat; 322. Articulated block; 323. Sliding block; 33. First air cylinder; 331. Piston plate; 332. Ground rod; 333. Return spring; 34. Second air cylinder; 341. Piston rod; 342. Extrusion block; 343. Air pipe. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] See also Figure 1 , Figure 2 As shown, the present invention provides a super-large diameter cylindrical foundation field-shaped reinforcement template device, including a column base mold 1, which is used as a casting mold for a cap, a reinforcement mechanism 2, which is used to enhance the stability of the overall structure of the column base mold 1, and a support mechanism 3, which is used to prevent the column base mold 1 from displacement. The column base mold 1 is composed of a plurality of groups of arc-shaped templates 11 spliced ​​together to form a cylindrical cylinder. The surfaces on both sides of the arc-shaped templates 11 are both wavy in shape, which are used to disperse the stress of the casting material, and the wavy shape of the splicing between the arc-shaped templates 11 bulges toward the inside of the column base mold 1. By splicing the dispersed plurality of arc-shaped templates 11 of the column base mold 1, the cap casting is completed. After solidification, the arc formwork 11 can be disassembled and recycled for repeated use, and the disassembled arc formwork 11 is easy to transport. The arc formwork 11, which is used as a casting formwork component of the base, has a wavy surface structure. During the concrete pouring process, the stress generated by the flow and diffusion of concrete will be dispersed on the inner wall of the uniform column base formwork 1 to enhance the overall strength of the column base formwork 1. The wavy joints between the arc formworks 11 bulge toward the inside of the column base formwork 1, which can disperse the stress generated by the flow and diffusion of concrete at the connection to the depressions on both sides to protect the weaker parts of the joints between the arc formworks 11.

[0035] In this embodiment, see Figure 1 , Figure 2 , Figure 6 , Figure 7As shown, a splicing groove 12 is provided at one end of each arc-shaped template 11, and a plurality of groups of T-shaped splicing keys 13 are fixedly connected to the other end of each arc-shaped template 11. The T-shaped splicing keys 13 are used to cooperate with the splicing grooves 12 for splicing, and the inner walls of the splicing grooves 12 are fixedly connected with limit blocks 121 for limiting at positions corresponding to both sides of each T-shaped splicing key 13, which can prevent the T-shaped splicing key 13 from detaching from the splicing grooves 12 to ensure the stability of the splicing of the arc-shaped template 11. An abutment block 122 is slidably connected to the inner wall of the limit block 121, and a support spring 123 is fixedly connected to the position between the abutment block 122 and the inner wall of the limit block 121, and the abutment block 122 is used to abut the T-shaped splicing key 13. By arranging the abutment block 122 on the inner wall of the limit block 121 and supporting it through the support spring 123, After the T-shaped splicing key 13 slides between the limit blocks 121, the tension of the support spring 123 will push the abutment block 122 to abut the T-shaped splicing key 13, so that a traction will be generated at the joint between the arc templates 11 to tighten the splicing surface between the arc templates 11 to ensure the sealing of the splicing, and the bottom of the T-shaped splicing key 13 is chamfered corresponding to the top of the abutment block 122 to facilitate the T-shaped splicing key 13 to slide into the position between the two limit blocks 121, and the outer arc surface of the arc template 11 is provided with a notch 14 corresponding to each position above the limit block 121 for the T-shaped splicing key 13 to pass through and enter the splicing groove 12. By setting the notch 14, when the arc template 11 is spliced, it is convenient to slide the T-shaped splicing key 13 on the arc template 11 from the notch 14 into the splicing groove 12.

[0036] Further, see Figure 1 , Figure 3 As shown, the reinforcement mechanism 2 includes a plurality of groups of vertical arc keels 21, which are arranged at the joints between each arc template 11 and fixedly connected to the arc template 11 by bolts, and are used to reinforce the joints between the arc templates 11. By fixing the vertical arc keels 21 at the joints of the arc templates 11 by bolts, the strength of the joints of the arc templates 11 can be increased to ensure that the joints of the arc templates 11 do not move or deform during the foundation construction process. The outer wall of the column base mold 1 is provided with a plurality of groups of transverse annular keels 22 A groove is provided at the position where each vertical arc keel 21 intersects with the transverse annular keel 22, and the transverse annular keel 22 is clamped, and the transverse annular keel 22 is fixedly connected with the transverse annular keel 22 by bolts. Multiple groups of transverse annular keels 22 are sleeved on the outer wall of the column base mold 1, and are fixed by bolts at the positions where the transverse annular keels 22 intersect with the vertical arc keels 21 to enhance the stability and strength of the overall structure of the column base mold 1. Two high-toughness steel belts 221 are provided inside the transverse annular keels 22 to enhance the strength of the transverse annular keels 22.

[0037] Furthermore, see Figure 1 , Figure 4 , Figure 5 As shown, the support mechanism 3 includes multiple groups of support plates 31, which are respectively fixedly connected to the bottom of each group of vertical arc keels 21, and the end of the support plate 31 away from the vertical arc keel 21 is fixedly connected with an anti-sliding block 311, and the top of each group of vertical arc keels 21 is fixedly connected with a connecting seat 321, and the connecting seat 321 is hinged with an electric cylinder telescopic rod 32 through a hinge block 322, and the telescopic end of the electric cylinder telescopic rod 32 is hinged with a slider 323, and the outer wall of the support plate 31 at the corresponding position of the slider 323 is slidably connected, and the support plate 31 and the electric cylinder telescopic rod 32 are installed at the position of the vertical arc keel 21 outside the column base mold 1, so that the vertical arc keel 21, the support plate 31 and the electric cylinder telescopic rod 32 form a triangular structure, thereby further enhancing the stability of the column base mold 1 structure.

[0038] It is worth noting that see Figure 1 , Figure 4 , Figure 5 As shown, the first air cylinder 33 is fixedly connected to the two sides of the inclined surface of each support plate 31, and the inner wall of the first air cylinder 33 is slidably connected to the piston plate 331. The surface of the piston plate 331 is connected to the ground insertion rod 332, and the ground insertion rod 332 extends to the outside of the first air cylinder 33 and is inclined toward the ground. The piston plate 331 is located on one side of the ground insertion rod 332 and is fixedly connected to the inner wall of the first air cylinder 33 with a return spring 333. The positions on both sides of each group of sliders 323 are fixedly connected to the extrusion blocks 342, and the anti-sliding block 311 is fixedly connected to the second air cylinder 34 at the position corresponding to each extrusion block 342. The inner wall of the second air cylinder 34 is the piston rod 341, and the second air cylinder 34 is connected to the first air cylinder 34 through the air pipe 343. The first air cylinder 33 is connected, and when the telescopic rod 32 of the electric cylinder is extended to form a triangular support, the telescopic rod 32 of the electric cylinder drives the connected slider 323 to slide on the support plate 31, and drives the extrusion block 342 to press the piston rod 341 into the second air cylinder 34, thereby squeezing the air of the second air cylinder 34 from the air pipe 343 into the first air cylinder 33, so as to facilitate the piston plate 331 in the first air cylinder 33 to be connected to the ground rod 332 and squeezed out, so that the ground rod 332 is inserted into the ground. By adding positioning diagonal braces at the intersecting position of the horizontal annular keel 22 and the vertical arc-shaped keel 21 on the outside of the column base mold 1 for reinforcement, the arc-shaped template 11 of the column base mold 1 can be effectively prevented from shifting during the concrete pouring process.

[0039] Here’s how it works:

[0040] When in use, after building the foundation cushion layer, clean the site of the formwork to ensure that there is no dust and debris on the site. When positioning the column base form 1, install the arc formwork 11 one by one to the designated position. When splicing the arc formworks 11, slide the T-shaped splicing key 13 on the arc formwork 11 to be spliced ​​into the splicing groove 12 from the notch 14 on the installed arc formwork 11. After sliding into the splicing groove 12, press the T-shaped splicing key 13 down to the position of the limit block 121 to limit it, so as to prevent the T-shaped splicing key 13 from being separated from the splicing groove 12, so as to ensure the stability of the splicing of the arc formwork 11. By setting an abutment block 122 on the inner wall of the limit block 121 and supporting it through the support spring 123, after the T-shaped splicing key 13 slides between the limit blocks 121, the tension of the support spring 123 will push the abutment block 122 to press against the T-shaped splicing key 13, so that a traction is generated at the splicing of the arc templates 11 to tighten the splicing surface between the arc templates 11 to ensure the sealing of the splicing, and at the splicing of the arc templates 11, the vertical arc keel 21 is fixedly connected by bolts, so as to ensure the strength of the splicing of the arc template 11 during the foundation construction process. The position of the splicing position of the form template 11 does not shift or deform, and then a plurality of groups of transverse annular keels 22 are sleeved on the outer wall of the column base mold 1, and the transverse annular keels 22 and the vertical arc keels 21 are fixed by bolts at the intersecting positions to enhance the stability and strength of the overall structure of the column base mold 1. By installing the support plate 31 and the electric cylinder telescopic rod 32 at the position of the vertical arc keel 21 outside the column base mold 1, the vertical arc keel 21, the support plate 31 and the electric cylinder telescopic rod 32 form a triangular structure, which further enhances the stability of the column base mold 1 structure. When the electric cylinder telescopic rod 32 is extended to form a triangular support The telescopic rod 32 of the electric cylinder drives the connected slider 323 to slide on the support plate 31, and drives the extrusion block 342 to press the piston rod 341 into the second air cylinder 34, so that the air of the second air cylinder 34 is squeezed into the first air cylinder 33 from the air pipe 343, so as to facilitate the piston plate 331 in the first air cylinder 33 to be connected to the ground rod 332 and squeezed out, so that the ground rod 332 is inserted into the ground. By adding positioning diagonal braces at the intersecting position of the horizontal annular keel 22 and the vertical arc keel 21 on the outside of the column base mold 1 for reinforcement, the arc template 11 of the column base mold 1 can be effectively prevented from deflecting during the concrete pouring process.

[0041] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A super-large diameter cylindrical foundation field reinforcement template device, characterized in that: include A column base mold (1) is used as a casting mold for the cap; A reinforcement mechanism (2) for enhancing the stability of the overall structure of the column base form (1); A supporting mechanism (3) for preventing the column base mold (1) from being displaced; The column base mold (1) is composed of a plurality of groups of arc-shaped templates (11) spliced ​​together to form a columnar cylinder. The surfaces on both sides of the arc-shaped templates (11) are both arranged in a wavy shape to disperse the stress diffused by the casting material, and the wavy shape at the joints between the arc-shaped templates (11) bulges toward the inside of the column base mold (1).

2. According to claim 1, a super-large diameter cylindrical foundation field reinforcement template device is characterized in that One end of each of the arc-shaped templates (11) is provided with a splicing groove (12), and the other end of each of the arc-shaped templates (11) is fixedly connected with a plurality of groups of T-shaped splicing keys (13), wherein the T-shaped splicing keys (13) are used to cooperate with the splicing grooves (12) for splicing, and the inner wall of the splicing grooves (12) corresponding to the positions on both sides of each T-shaped splicing key (13) are respectively fixedly connected with limit blocks (121) for limiting.

3. According to claim 2, a super-large diameter cylindrical foundation field reinforcement template device is characterized by: The inner wall of the limit block (121) is slidably connected to an abutment block (122), a support spring (123) is fixedly connected to the position between the abutment block (122) and the inner wall of the limit block (121), and the abutment block (122) is used to abut against the T-shaped splicing key (13).

4. According to claim 3, a super-large diameter cylindrical foundation field reinforcement template device is characterized in that: The outer arc surface of the arc-shaped template (11) is provided with a notch (14) corresponding to each position above the limit block (121), for the T-shaped splicing key (13) to pass through and enter the splicing groove (12).

5. According to claim 1, a super-large diameter cylindrical foundation field reinforcement template device is characterized by: The reinforcement mechanism (2) comprises a plurality of groups of vertical arc-shaped keels (21), which are arranged at the joint positions between each arc-shaped template (11) and are fixedly connected to the arc-shaped template (11) by bolts, so as to reinforce the joints between the arc-shaped templates (11).

6. According to claim 5, a super-large diameter cylindrical foundation field reinforcement template device is characterized by: The outer wall of the column base mold (1) is sleeved with multiple groups of transverse annular keels (22), and each vertical arc keel (21) is provided with a groove at the position where it intersects with the transverse annular keel (22), and the transverse annular keel (22) is clamped, and the transverse annular keel (22) is fixedly connected with the transverse annular keel (22) by bolts.

7. According to claim 6, a super-large diameter cylindrical foundation field reinforcement template device is characterized by: Two high-toughness steel strips (221) are arranged inside the transverse annular keel (22) to enhance the strength of the transverse annular keel (22).

8. According to claim 1, a super-large diameter cylindrical foundation field reinforcement template device is characterized by: The support mechanism (3) comprises a plurality of groups of support plates (31), the plurality of groups of support plates (31) are respectively fixedly connected to the bottom of each group of vertical arc-shaped keels (21), and one end of the support plate (31) away from the vertical arc-shaped keel (21) is fixedly connected to an anti-sliding block (311), and a connecting seat (321) is fixedly connected above each group of vertical arc-shaped keels (21), the connecting seat (321) is hingedly connected to an electric cylinder telescopic rod (32) through a hinge block (322), the telescopic end of the electric cylinder telescopic rod (32) is hingedly connected to a sliding block (323), and the sliding block (323) is slidably connected to the outer wall of the support plate (31) at a corresponding position.

9. According to claim 8, a super-large diameter cylindrical foundation field reinforcement template device is characterized by: The first gas cylinder (33) is fixedly connected to both sides of the inclined surface of each support plate (31), the inner wall of the first gas cylinder (33) is slidably connected to a piston plate (331), the surface of the piston plate (331) is connected to a ground-inserting rod (332), and the ground-inserting rod (332) extends to the outside of the first gas cylinder (33) and is inclined toward the ground.

10. The super-large diameter cylindrical foundation field reinforcement template device according to claim 9, characterized in that: The piston plate (331) is located on one side of the ground insertion rod (332) and is fixedly connected to the inner wall of the first air cylinder (33) with a return spring (333); positions on both sides of each group of the sliders (323) are respectively fixedly connected to extrusion blocks (342); and the anti-sliding block (311) is fixedly connected to the second air cylinder (34) at the position corresponding to each extrusion block (342); the inner wall of the second air cylinder (34) is the piston rod (341), and the second air cylinder (34) is connected to the first air cylinder (33) through the air pipe (343).

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