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CN-224229416-U - Multistage hydraulic buffer type push pipe propelling structure

CN224229416UCN 224229416 UCN224229416 UCN 224229416UCN-224229416-U

Abstract

The utility model belongs to the technical field of pipe jacking, in particular to a multistage hydraulic buffer type pipe jacking propelling structure, which comprises a bottom plate, wherein a support is fixedly connected to the top of the bottom plate, a multistage hydraulic cylinder is fixedly connected to the inside of the support, a connecting plate is fixedly connected to the output end of the multistage hydraulic cylinder, a plurality of fixing rods are fixedly connected to the side wall of the connecting plate, the fixing rods are distributed in a circumferential array state, a limiting plate is fixedly connected to the end part of the fixing rods, a connecting cylinder is connected to the middle part of the limiting plate in a sliding mode, a plurality of buffer springs are fixedly connected to the side wall of the connecting plate, the buffer springs are sleeved in the middle part of the fixing rods, the end parts of the buffer springs are fixedly connected to the connecting cylinder, the end parts of the connecting cylinder are fixedly connected with a pushing plate, part of impact force can be effectively absorbed through the structure, rigid impact can be converted into flexible transmission, cracking and breakage of the end parts of pipe joints due to overlarge local stress can be reduced, and meanwhile protection can be carried out on the multistage hydraulic cylinder and the connecting plate.

Inventors

  • Chen Kezhuo
  • LIU GONGQIN

Assignees

  • 湖北正茂新材料科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250716

Claims (7)

  1. 1. The multistage hydraulic buffer type push pipe pushing structure is characterized by comprising a bottom plate (1), wherein a support (11) is fixedly connected to the top of the bottom plate (1), a multistage hydraulic oil cylinder (12) is fixedly connected to the inside of the support (11), a connecting plate (13) is fixedly connected to the output end of the multistage hydraulic oil cylinder (12), a plurality of fixing rods (14) are fixedly connected to the side wall of the connecting plate (13), the fixing rods (14) are distributed in a circumferential array state, limiting plates (15) are fixedly connected to the end portions of the fixing rods (14), a connecting cylinder (16) is connected to the middle portion of the limiting plates (15) in a sliding mode, a plurality of buffer springs (17) are fixedly connected to the side wall of the connecting plate (13), the buffer springs (17) are sleeved on the middle portion of the fixing rods (14), the end portions of the buffer springs (17) are fixedly connected to the connecting cylinder (16), and pushing plates (18) are fixedly connected to the end portions of the connecting cylinder (16).
  2. 2. The multistage hydraulic buffer type push pipe pushing structure is characterized in that two groups of fixing plates (2) are fixedly connected to the side wall of a bottom plate (1), the two groups of fixing plates (2) are symmetrically arranged, a screw rod (21) is connected to the top of the fixing plates (2) in a threaded mode, an adjusting handle (22) is fixedly connected to the top of the screw rod (21), and a support (23) is connected to the bottom of the screw rod (21) in a rotating mode; The support (23) is arranged in a truncated cone shape.
  3. 3. The multistage hydraulic buffer type push pipe pushing structure according to claim 1 is characterized in that two guide tables (3) are fixedly connected to the top of a bottom plate (1), the two guide tables (3) are symmetrically arranged, the guide tables (3) are arranged at one end far away from a bracket (11), a plurality of connecting rods (31) are fixedly connected to the side wall of the guide table (3), and the connecting rods (31) are distributed in a linear array state; The middle part of connecting rod (31) rotates and is connected with gyro wheel (32).
  4. 4. The multistage hydraulic buffer type push pipe pushing structure according to claim 1 is characterized in that the side wall of the bracket (11) is connected with a plurality of guide rods (4) in a sliding manner, the guide rods (4) are distributed in a circumferential array state, and the end parts of the guide rods (4) are fixedly connected to the side wall of the connecting plate (13); One end of the guide rod (4) far away from the connecting plate (13) is fixedly connected with a limiting block (41).
  5. 5. The multi-stage hydraulic buffer type push pipe pushing structure according to claim 1 is characterized in that a positioning rod (5) is fixedly connected to the side wall of the push plate (18), and the positioning rod (5) is arranged at the position of the right center of the push plate (18).
  6. 6. The multistage hydraulic buffer type push pipe pushing structure according to claim 1 is characterized in that a buffer pad (6) is adhered to the side wall of the push plate (18), and the buffer pad (6) is made of rubber.
  7. 7. The multistage hydraulic buffer type push pipe pushing structure according to claim 2, wherein the adjusting handle (22) is in a straight shape, and the outer part of the adjusting handle (22) is made of rubber.

Description

Multistage hydraulic buffer type push pipe propelling structure Technical Field The utility model belongs to the technical field of jacking pipes, and particularly relates to a multistage hydraulic buffer type jacking pipe propelling structure. Background The pipe jacking is a non-excavation underground pipeline construction technology, in short, under the condition of not excavating the ground, the pipeline is jacked into the receiving well from the working well through professional equipment, so that the process of laying the underground pipeline is completed, and the pipe jacking is mainly suitable for construction of urban underground pipelines, is especially suitable for being used in areas with heavy traffic, dense buildings and sensitive surface environments, and can reduce the damage to ground traffic, vegetation and peripheral facilities to the greatest extent. The multistage hydraulic cylinder is a hydraulic actuating element with a special structure, a piston rod of the multistage hydraulic cylinder is composed of a plurality of sections of nested sleeves, the multistage hydraulic cylinder can stretch step by step, the length is short in a contracted state, the stroke after stretching is long, long-distance linear motion can be realized in a limited space, and the multistage hydraulic cylinder is usually arranged as a driving source for the pipe jacking propulsion device. When the existing multistage hydraulic pipe jacking propulsion device is used, the impact force generated by abrupt change of stratum resistance is easily received in the process of pushing the pipe fitting by the push plate, the impact force acts on the push plate, and damage can be possibly caused to a connecting piece of the hydraulic oil cylinder and the output end of the oil cylinder. Therefore, the utility model provides a multi-stage hydraulic buffer type push pipe pushing structure. Disclosure of utility model In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The technical scheme includes that the multistage hydraulic buffer type push pipe pushing structure comprises a bottom plate, a support is fixedly connected to the top of the bottom plate, a multistage hydraulic oil cylinder is fixedly connected to the inside of the support, a connecting plate is fixedly connected to the output end of the multistage hydraulic oil cylinder, a plurality of fixing rods are fixedly connected to the side wall of the connecting plate, the fixing rods are distributed in a circumferential array state, a limiting plate is fixedly connected to the end portion of the fixing rod, a connecting cylinder is connected to the middle portion of the limiting plate in a sliding mode, a plurality of buffer springs are fixedly connected to the side wall of the connecting plate, the buffer springs are sleeved on the middle portion of the fixing rod, the end portions of the buffer springs are fixedly connected to the connecting cylinder, a push plate is fixedly connected to the end portion of the connecting cylinder, and the buffer springs can effectively absorb part of impact force through deformation of the structure to convert rigid impact into flexible transmission. The bottom plate is characterized in that two groups of fixing plates are fixedly connected to the side wall of the bottom plate, the two groups of fixing plates are symmetrically arranged, a screw is connected to the top of each fixing plate in a threaded mode, an adjusting handle is fixedly connected to the top of each screw, a support is rotatably connected to the bottom of each screw, the supports are arranged in a truncated cone shape, and through the structure, the height of the fixing plates can be effectively adjusted, and the bottom plate can be placed more stably. The guide tables are symmetrically arranged, the guide tables are arranged at one end far away from the support, a plurality of connecting rods are fixedly connected to the side walls of the guide tables, the connecting rods are distributed in a linear array state, the middle parts of the connecting rods are rotatably connected with rollers, and the guide tables can effectively support and guide pipe joints through the structure, so that the moving path of the pipe joints is more accurate. The side wall of the support is connected with a plurality of guide rods in a sliding mode, the guide rods are distributed in a circumferential array mode, the end portions of the guide rods are fixedly connected to the side wall of the connecting plate, one end, away from the connecting plate, of each guide rod is fixedly connected with a limiting block, and through the structure, the connecting plate can be effectively guided, and shaking conditions in the moving process of the connecting plate are reduced. The positioning rod is arranged at the position of the right center of the push plate, and through the structure, the positioning rod can effectively