A reinforcing cage for a concrete structure and a processing apparatus therefor
By designing feeding, positioning, clamping, and drying components for rebar cage processing equipment, the problems of low processing and cleaning efficiency of rebar cages were solved, and efficient automated production of rebar cages was achieved.
Patent Information
- Application Number
- CN202410011830.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2044-01-04
AI Technical Summary
In existing technologies, the processing efficiency of steel cages is low, the separation of steel pipe processing and welding processes leads to low efficiency, and the efficiency of cleaning liquid inside the steel pipe is low, which affects automated processing.
A steel reinforcement cage processing device for concrete structures was designed, including feeding, positioning, clamping, transfer and drying components, to realize automatic positioning, clamping and cleaning of steel pipes, and to quickly clean residual liquid inside the steel pipes through negative pressure and inclined structure, integrating steel pipe processing and welding processes.
This improved the processing efficiency of the rebar cage, avoided repeated positioning and transportation of the steel pipes, ensured the cleanliness of the steel pipes, prepared for subsequent welding, and enhanced the level of automation.
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Figure CN117657725B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete structure processing technology, and in particular to a steel reinforcement cage for concrete structures and its processing equipment. Background Technology
[0002] In the application of concrete, concrete has high compressive strength but very low tensile strength. Reinforcing cages can restrain the concrete of the pile body, enabling it to withstand a certain axial tensile force. Therefore, they are often used in the construction of bridges or high-rise buildings.
[0003] In the processing of reinforcing cages, steel coils are first rolled into tubes to serve as vertical reinforcements. Then, multiple annular steel pipes are fixed on a welding machine, and the reinforcing bars are bent and welded to the multiple steel pipes using the welding machine. However, in existing technologies, the processing of steel pipes and the welding of reinforcing cages are separate processes. After the steel pipes are processed, they need to be repackaged and transported to the welding section for welding. This reduces processing efficiency and requires repositioning and fixing of the steel pipes. Furthermore, during the rolling process, manual dehydration is required inside each steel pipe because cooling liquid is continuously sprayed during the rolling process. As a result, liquid residue remains inside the rolled steel pipes. The manual dehydration method described above is inefficient and not conducive to automated processing. Based on this, the present invention designs a reinforcing cage for concrete structures and its processing equipment. Summary of the Invention
[0004] The purpose of this invention is to solve the problems in the prior art, and to propose a steel reinforcement cage for concrete structures and its processing equipment.
[0005] A steel reinforcement cage processing device for concrete structures includes a base, a feeding assembly for conveying multiple steel pipes connected to the base, a positioning assembly for circumferentially positioning the multiple steel pipes connected to the feeding assembly, a clamping assembly for simultaneously clamping and fixing the multiple steel pipes connected to the positioning assembly, a transfer assembly for transferring the multiple steel pipes connected to the transfer assembly, and a drying assembly for simultaneously tilting and drying the steel pipes.
[0006] In the aforementioned steel pipe cage processing equipment for concrete structures, the feeding assembly includes a pre-feeding assembly and an assembly feeding assembly. Both the pre-feeding assembly and the assembly feeding assembly include a feeding wheel set, which comprises multiple transfer wheels. Each transfer wheel is connected to a rotating shaft, and each rotating shaft is connected to a synchronous pulley. The multiple synchronous pulleys are connected by a synchronous belt. A connecting platform is connected to the outer side of the synchronous belt. A rotating shaft passes through the side wall of the connecting platform and is connected to a drive motor at the portion outside the connecting platform. The feeding wheel set in the pre-feeding assembly is fixedly connected to a base. A groove is fitted onto the outer side of the connecting platform in the assembly feeding assembly. Multiple springs are connected to the portion of the connecting platform located within the groove, and the other ends of the multiple springs are fixedly connected to the inner bottom of the groove.
[0007] In the above-mentioned steel pipe cage processing equipment for concrete structures, the positioning component includes two truncated cones with shell structures on both sides. Each truncated cone has a rotating plate sealed and rotatably connected to both sides. Each rotating plate has multiple mating holes in a ring, and the multiple mating holes are connected to steel pipes. The two rotating plates located in one truncated cone are connected to a drive shaft. The part of the drive shaft outside the truncated cone is connected to a rotating motor. A housing is sleeved on the outside of the rotating motor. The housing is fixedly connected to the truncated cone through multiple brackets. The clamping component is set in the truncated cone connected to the housing. The steel pipe located on the bottom side abuts against a limiting platform. The limiting platform is fixed on the base.
[0008] In the above-mentioned steel pipe cage processing equipment for concrete structures, the clamping assembly includes a three-jaw chuck fixed inside a truncated cone. Each three-jaw chuck is fixedly connected to a rotating plate and coaxially arranged with a corresponding mating hole. The rotating end of each three-jaw chuck is connected to a rotating shaft II. The rotating shaft II is connected to a bevel gear I. The bevel gear I meshes with the bevel gear II. The bevel gear II is connected to a gear I through a rotating shaft III. The gear I has an arc-shaped internal gear rack meshing inside it. The internal gear rack is fixedly connected to the inner side wall of the truncated cone.
[0009] In the above-mentioned steel pipe cage processing equipment for concrete structures, the transfer assembly includes two fixed platforms, each fixed platform is connected to a slide rail, the two slide rails are respectively connected to a slider, the two sliders are connected to a top platform, the top platform has a sliding cavity, the bottom of the sliding cavity is open to the outside, the sliding cavity is connected to two movable blocks, the two movable blocks are respectively fixedly connected to the top of two truncated cones, the two movable blocks are connected to a threaded rod, and the threaded rod is connected to a servo motor.
[0010] In the above-mentioned steel pipe cage processing equipment for concrete structures, the drying component includes an arc-shaped platform, which is rotatably connected to a top platform. An arc-shaped gear sleeve is connected to the top of the arc-shaped platform, and a gear two meshes with the gear sleeve. A threaded sleeve is connected to the rotation center of the gear two. The two sides of the threaded sleeve are respectively connected to the top platform through a support platform. A bidirectional screw is connected to the inner side of the threaded sleeve. The bidirectional screw consists of a first threaded part and a second threaded part with opposite directions of rotation and the same length. The two ends of the bidirectional screw are fixed to two fixed platforms through connecting frames.
[0011] In the above-mentioned steel pipe cage processing equipment for concrete structures, a storage bucket is fixedly installed in the base, the opening of the storage bucket is provided with a rubber sealing layer, the opening of the storage bucket is inclined, and the storage bucket is connected to an external negative pressure device.
[0012] A steel reinforcement cage for concrete structures comprises at least six steel pipes arranged in a ring, with reinforcing bars wrapped around the outside of the steel pipes. The reinforcing bars are spirally arranged and welded to each steel pipe.
[0013] Compared with existing technologies, the advantages of this invention are:
[0014] 1. This invention enables the steel pipes to be directly fed into the device for steel cage fabrication after the previous steel pipe rolling process is completed, without the need for packaging and transporting the steel pipes. Furthermore, this invention can automatically achieve the positioning and clamping of the steel pipes, and can adjust multiple steel pipes in a ring shape of the steel pipe cage by rotating the motor and the transmission shaft, thereby avoiding the problem of repositioning and fixing required in the prior art and improving processing efficiency.
[0015] 2: During the transfer process of moving the positioning component to the welding process, the tilting action of the drying component is used to tilt the multiple steel pipes and the positioning component as a whole, and to make the pipe openings of the multiple steel pipes fit and seal with the collection bucket. This allows for the rapid cleaning of residual liquid inside the steel pipes by tilting and negative pressure adsorption, so as to achieve the purpose of cleaning the multiple steel pipes that make up the reinforcing cage simultaneously before welding. Attached Figure Description
[0016] Figure 1 This is a first-view structural schematic diagram of a steel cage processing equipment for concrete structures proposed in this invention.
[0017] Figure 2 This is a second-view structural schematic diagram of a steel cage processing equipment for concrete structures proposed in this invention.
[0018] Figure 3 This is a schematic diagram of the feeding wheel assembly in a steel cage processing equipment for concrete structures proposed in this invention.
[0019] Figure 4 This is a schematic diagram of the feeding assembly in a steel cage processing equipment for concrete structures proposed in this invention.
[0020] Figure 5 This is a schematic diagram of the positioning component in a steel cage processing equipment for concrete structures proposed in this invention.
[0021] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle.
[0022] Figure 7 This is a schematic diagram of the transfer component in a steel cage processing equipment for concrete structures proposed in this invention.
[0023] Figure 8 This is a schematic diagram of the drying component in a steel cage processing equipment for concrete structures proposed in this invention.
[0024] Figure 9 This is a schematic diagram of the steel cage structure proposed in this invention.
[0025] In the diagram: 100 steel pipe, 101 rebar, 2 base, 3 feeding assembly, 31 front feeding assembly, 32 assembly feeding assembly, 321 groove, 322 spring, 33 feeding wheel set, 331 transfer wheel, 332 rotating shaft one, 333 synchronous pulley, 334 synchronous belt, 335 connecting platform, 336 drive motor, 4 positioning assembly, 41 frustum, 42 rotating plate, 43 mating hole, 44 transmission shaft, 45 rotating motor, 46 chassis, 47 support plate, 48 limit switch. 5. Platform, 5. Clamping assembly, 51. Three-jaw chuck, 52. Rotary shaft II, 53. Bevel gear I, 54. Bevel gear II, 55. Gear I, 56. Internal gear rack, 57. Rotary shaft III, 6. Transfer assembly, 61. Fixed platform, 62. Slide rail, 63. Slider, 64. Top platform, 65. Slide cavity, 66. Movable block, 67. Threaded rod, 7. Drying assembly, 71. Arc-shaped platform, 72. Gear sleeve, 73. Gear II, 74. Threaded sleeve, 75. Support platform, 76. Bidirectional screw, 77. Connecting frame, 8. Storage bucket, 9. Sealing layer. Detailed Implementation
[0026] Reference Figure 1-9A steel reinforcement cage for concrete structures is provided, comprising at least six steel pipes 100 arranged in a ring. Reinforcing bars 101 are wound around the outer sides of the steel pipes 100, and the reinforcing bars 101 are spirally arranged and welded to each steel pipe 100. A processing device for processing the steel pipe cage is also provided, including a base 1. The base 1 is connected to a feeding assembly 3 for conveying the steel pipes 100. The feeding assembly 3 is connected to a positioning assembly 4 for circumferentially positioning the steel pipes 100. The positioning assembly 4 is connected to a clamping assembly 5 for simultaneously clamping and fixing the steel pipes 100. The clamping assembly 5 is connected to a transfer assembly 6 for transferring the steel pipes 100. The transfer assembly 6 is connected to a drying assembly 7 for simultaneously tilting and drying the steel pipes 100. The tilting action pours out the liquid inside the steel pipes 100, achieving the drying process.
[0027] The feeding assembly 3 includes a pre-feeding assembly 31 and an assembly feeding assembly 32. The pre-feeding assembly 31 is used to transport the steel pipe 100 from the previous processing stage to this equipment. Both the pre-feeding assembly 31 and the assembly feeding assembly 32 include a feeding wheel set 33. The feeding wheel set 33 includes multiple transfer wheels 331. Each transfer wheel 331 is connected to a rotating shaft 332. Each rotating shaft 332 is connected to a synchronous pulley 333. The multiple synchronous pulleys 333 are connected by a synchronous belt 334. A connecting platform 335 is connected to the outside of the synchronous belt 334. A rotating shaft 332 passes through the side wall of the connecting platform 335 and is connected to a drive motor 336 outside the connecting platform 335. The drive motor 336 drives the synchronous pulleys 333 to rotate, and the synchronous belt 334 and multiple synchronous pulleys 333 rotate. Synchronous pulley 333 drives multiple rotating shafts 332 to rotate, thereby enabling multiple transfer wheels 331 to move the steel pipe 100. The transfer wheels 331 are designed with a "V" shape and their dimensions match the steel pipe 100 to improve the transfer effect of the steel pipe 100. The feed wheel group 33 in the front feed assembly 31 is fixedly connected to the base 1. The connecting platform 335 in the feed assembly 32 is connected to a groove 321. The groove 321 is opened on the base 1. The part of the connecting platform 335 located in the groove 321 is connected to multiple springs 322. The other end of the multiple springs 322 is fixedly connected to the inner bottom of the groove 321. In this way, when the steel pipe 100 rotates, the connecting platform 335 can be moved down by compressing the springs 322, thereby satisfying the rotation space of the steel pipe 100.
[0028] The positioning assembly 4 includes two frustums 41 with shell structures on both sides. Each frustum 41 has a rotating plate 42 sealed and rotatably connected to both sides. Each rotating plate 42 has multiple mating holes 43 arranged in a ring. The multiple mating holes 43 are connected to the steel pipe 100. The steel pipe 100 is simultaneously inserted into the two sets of mating holes 43 on both sides by the feeding assembly 3 to achieve positioning. The two rotating plates 42 located in one frustum 41 are connected to a drive shaft 44. The part of the drive shaft 44 outside the frustum 41 is connected to a rotary motor 45. The rotary motor 45 can rotate the frustum 41, thereby driving the steel pipe 100 on the lower side to rotate, realizing the simultaneous assembly of multiple steel pipes 100. The outer side of the rotary motor 45 is fitted with a housing 46. The housing 46 is fixedly connected to the frustum 41 by multiple support plates 47. The clamping assembly 5 is set in the frustum 41 connected to the housing 46. The steel pipe 100 on the bottom side abuts against a limiting platform 48. The limiting platform 48 is fixed on the base 1. The clamping assembly 5 includes a fixed... Three-jaw chucks 51 are fixedly connected to a rotating plate 42 and coaxially arranged with a corresponding mating hole 43. Each three-jaw chuck 51 has a rotating shaft 52 connected to its rotating end. A bevel gear 53 is connected to the rotating shaft 52, and the bevel gear 53 meshes with a bevel gear 54. The bevel gear 54 is connected to a gear 55 via a rotating shaft 57. An arc-shaped internal gear rack 56 meshes within the gear 55, and the internal gear rack 56 is fixedly connected to the frustum 41. On the inner wall, when the steel pipe 100 located on the lower side rotates, it will drive the rotating plate 42 and the frustum 41 to rotate relative to each other. In this way, the gear 55 located on the lower side will mesh with the internal gear rack 56, and in the transmission of the bevel gear structure, the three-jaw chuck will fix the steel pipe 100. The steel pipe located on the bottom side abuts against the limiting platform 48, thereby limiting the axial position of the steel pipe and ensuring that after multiple steel pipes 100 are assembled, the end face of the steel pipe 100 is flush with the end face of the frustum 41.
[0029] The transfer assembly 6 includes two fixed platforms 61, each with a slide rail 62 connected to it. Each slide rail 62 is connected to a slider 63, and the two sliders 63 are connected to a top platform 64. The top platform 64 drives two truncated cones 41 on both sides to move simultaneously, thereby transferring multiple steel pipes 100 to the roll welding process. A sliding cavity 65 is formed in the top platform 64, with its bottom communicating with the outside. Two movable blocks 66 are connected to the sliding cavity 65, and each movable block 66 is fixedly connected to the top of one of the two truncated cones 41. A threaded rod 67 is connected to a servo motor. The threaded rod 78 and movable block 66 allow the two frustums 41 to approach each other, thus facilitating rotational movement during roll welding. The drying assembly 7 includes an arc-shaped platform 71, rotatably connected to a top platform 64. The arc-shaped platform 71 can rotate relative to the top platform 64 to adjust the angle of the two frustums 41. An arc-shaped gear sleeve 72 is connected to the top of the arc-shaped platform 71, meshing with a gear 73. A threaded sleeve 74 is connected to the rotation center of the gear 73. Supports are located on both sides of the threaded sleeve 74. 75 is connected to the top platform 64. A bidirectional screw 76 is connected to the inner side of the threaded sleeve 74. The bidirectional screw 76 consists of a first threaded portion 761 and a second threaded portion 762 of opposite directions and equal length. Both ends of the bidirectional screw 76 are fixed to two fixed platforms 61 via connecting brackets 77. The angle of the arc-shaped platform 71 can be adjusted by the meshing of gear 73 and gear sleeve 72. The two oppositely oriented threaded portions allow the threaded sleeve 74 to rotate twice in opposite directions relative to the bidirectional screw 76, ultimately returning to the initial plane. In the above process, the two frustums 41 tilt simultaneously. A storage bucket 8 is fixedly installed in the base 1. The opening of the storage bucket 8 is provided with a rubber sealing layer 9. The sealing layer 9 can cooperate with the frustum 41 tilted on the side near the storage bucket 8. At the same time, the opening of the storage bucket 8 is tilted. Therefore, through the external negative pressure equipment connected to the storage bucket 8 and the tilting action, the residual liquid inside the steel pipe 100 is cleaned. After the tilting is completed, the arc-shaped platform 71 is flattened by the second threaded part 762 to facilitate the subsequent roll welding assembly work.
[0030] In use, this invention delivers a steel pipe 100 to the right-side frustum 41 via the pre-feeding assembly 31. With the feeding assembly 32 in operation, the other end of the steel pipe is connected to the left-side frustum 41. A limiting plate 48 limits the end face of the steel pipe 100. Then, the rotating motor 45 is activated, causing the rotating plate 42 to rotate relative to the frustum 41. During this process, the steel pipe 100 located on the transfer wheels 331 rotates around the central axis of the frustum 41 under the drive of the frustum 41, thus affecting the sides of the multiple transfer wheels 331. When pressure is applied, because the inner side of the transfer wheel 331 is an inclined slope and the connecting platform 335 is limited in the vertical direction by the groove 321, multiple transfer wheels 331 together drive the connecting platform 335 to move downward. During this process, the gear 1 55 located on the bottom side meshes with the internal gear rack 56, causing the rotating shaft 3 57 to rotate. The rotating shaft 3 57 will drive the bevel gear 2 54 to rotate, thereby driving the bevel gear 1 53 and the rotating shaft 2 52 to rotate. The rotation of the rotating shaft 2 52 will work the three-jaw chuck 51, so that the three-jaw chuck 51 fixes the steel pipe 100.
[0031] Repeat the above operation until all steel pipes 100 are fixed. Then, move the top platform 64 via two slide rails 62 and slider 63. During this process, the threaded sleeve 74 on gear 2 73 meshes with the first threaded portion 761 on the bidirectional screw 76, causing the threaded sleeve 74 to rotate relative to the gear. This will drive gear 2 73 to rotate, and thus drive the gear sleeve 72 to rotate. The present invention uses... Figure 8 For example, the gear sleeve 72 is set to rotate counterclockwise, and the gear sleeve 72 is connected to the arc-shaped platform 71, which will cause the arc-shaped platform 71 to rotate counterclockwise, thereby causing the two round platforms 41 located on the lower side to rotate counterclockwise. In this way, the round platform 41 located on the left side will cooperate and connect with the sealing layer 9 and the storage bucket 8 on the left side. At this time, the movement of the slide rail 62 and the slider 63 is stopped, the negative pressure device in the storage bucket 8 is started, and the sealing layer 9 seals the round platform 41. This will clean the residual liquid in the multiple steel pipes 100. Then the slide rail 62 and the slider 63 are started again. At this time, the threaded sleeve 74 will cooperate with the second threaded part 762. The second threaded part 762 and the first threaded part 761 have opposite rotation directions and the same length, so the gear sleeve 72 will rotate counterclockwise to a horizontal state. In this way, the two round platforms 41 will drive the multiple steel pipes 100 to return to a horizontal state, which is convenient for roll welding.
[0032] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative and not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.
Claims
1. A reinforcement cage processing apparatus for concrete structures, comprising a base (2), characterised in that: The base (2) is connected with the feeding assembly (3) for conveying multiple steel pipes (100), the feeding assembly (3) is connected with the positioning assembly (4) for positioning multiple steel pipes (100) in a ring shape, the positioning assembly (4) is connected with the clamping assembly (5) for clamping and fixing multiple steel pipes (100) simultaneously, and the clamping assembly (5) is connected with the transfer assembly (6) for transferring multiple steel pipes (100), and the transfer assembly (6) is connected with the drying assembly (7) for simultaneously inclining and drying the steel pipes (100); The positioning assembly (4) comprises two circular tables (41) of two shell structures on two sides, two rotating plates (42) are sealingly and rotatably connected to the two sides of each circular table (41), a plurality of matching holes (43) are annularly formed in each rotating plate (42), the matching holes (43) are matched and connected with the steel pipes (100), two rotating plates (42) in one circular table (41) are commonly connected with a transmission shaft (44), the transmission shaft (44) is connected with a rotating motor (45) outside the circular table (41), a machine box (46) is sleeved outside the rotating motor (45), the machine box (46) is fixedly connected with the circular table (41) through a plurality of support plates (47), the clamping assembly (5) is arranged in the circular table (41) connected with the machine box (46), and the steel pipes (100) on the bottom side abut against a limiting table (48) fixed on the base (2); The transfer assembly (6) comprises two fixed tables (61), one sliding rail (62) is connected in each fixed table (61), one sliding block (63) is matched and connected with each sliding rail (62), and the two sliding blocks (63) are commonly connected with a top table (64). The top table (64) is provided with a sliding cavity (65), the bottom of the sliding cavity (65) is communicated with the outside, two movable blocks (66) are connected in the sliding cavity (65), the top of each circular table (41) is fixedly connected with the two movable blocks (66), and the two movable blocks (66) are commonly connected with a threaded rod (67), and the threaded rod (67) is connected with a servo motor; The drying assembly (7) comprises an arc-shaped table (71), the arc-shaped table (71) is rotatably connected in the top table (64), the top of the arc-shaped table (71) is connected with an arc-shaped gear sleeve (72), the gear sleeve (72) is meshed with a gear two (73), the rotary center of the gear two (73) is connected with a threaded sleeve (74), the two sides of the threaded sleeve (74) are connected with the top table (64) through support tables (75), the inner side of the threaded sleeve (74) is connected with a bidirectional screw rod (76), the bidirectional screw rod (76) is composed of a first threaded portion (761) and a second threaded portion (762) with opposite rotation directions and same lengths, and the two ends of the bidirectional screw rod (76) are fixed on the two fixed tables (61) through connecting frames (77).
2. A reinforcing cage processing apparatus for concrete structures as claimed in claim 1, characterized in that: The feeding assembly (3) comprises a pre-feeding assembly (31) and an assembly feeding assembly (32), the pre-feeding assembly (31) and the assembly feeding assembly (32) each comprise a feeding wheel group (33), the feeding wheel group (33) comprises a plurality of transfer wheels (331), each of the transfer wheels (331) is connected with a rotating shaft I (332), each of the rotating shaft I (332) is connected with a synchronous wheel (333), a plurality of the synchronous wheels (333) are connected through a synchronous belt (334), the outer side of the synchronous belt (334) is connected with a connecting table (335), one of the rotating shaft I (332) passes through the side wall of the connecting table (335) and the part outside the connecting table (335) is connected with a driving motor (336), the feeding wheel group (33) in the pre-feeding assembly (31) is fixedly connected with the base (2), the bottom of the connecting table (335) in the assembly feeding assembly (32) is connected with a groove (321) opened on the base (2), the part inside the groove (321) of the connecting table (335) is connected with a plurality of springs (322), the other end of the plurality of springs (322) is fixedly connected with the inner bottom of the groove (321).
3. A reinforcing cage processing apparatus for concrete structures as claimed in claim 1, characterized in that: The clamping assembly (5) comprises three jaw chucks (51) fixed in the circular table (41), each of the three jaw chucks (51) is fixedly connected with the rotating plate (42) and coaxially arranged with the corresponding matching hole (43), the rotating end of each of the three jaw chucks (51) is connected with a rotating shaft II (52), the rotating shaft II (52) is connected with a bevel gear I (53), the bevel gear I (53) is meshedly connected with a bevel gear II (54), the bevel gear II (54) is connected with a gear I (55) through a rotating shaft III (57), the gear I (55) is meshedly connected with an arc-shaped internal gear strip (56) inside, and the internal gear strip (56) is fixedly connected with the inner side wall of the circular table (41).
4. The reinforcement cage processing apparatus for a concrete structure according to claim 1, characterized by: The base (2) is fixedly provided with a storage barrel (8), the barrel opening part of the storage barrel (8) is provided with a sealing layer (9) of rubber material, the barrel opening part of the storage barrel (8) is obliquely arranged, and the storage barrel (8) is connected with external negative pressure equipment.
Citation Information
Patent Citations
Reinforcement cage welding auxiliary device and welding method applying same
CN114770015A
Slurry leakage prevention reinforcement cage structure for karst cave pile foundation construction
CN115710898A