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CN-224228988-U - Parallel hydraulic cylinder structure

CN224228988UCN 224228988 UCN224228988 UCN 224228988UCN-224228988-U

Abstract

The application relates to the technical field of parallel hydraulic cylinders, in particular to a parallel hydraulic cylinder structure which comprises a mounting seat, wherein a first hydraulic cylinder is mounted on one side of the top end of the mounting seat. According to the application, the first hydraulic cylinder and the second hydraulic cylinder are symmetrically arranged on two sides of the mounting seat, the bracket is arranged at the middle part of the top end of the mounting seat, and meanwhile, the forced synchronous assembly consisting of the first connecting rod, the connecting column, the synchronous rotating rod and the second connecting rod is jointly arranged between the bracket and the piston rods of the first hydraulic cylinder and the second hydraulic cylinder, so that the synchronous expansion and contraction of the piston rods on the first hydraulic cylinder and the second hydraulic cylinder can be realized under the action of the forced synchronous assembly when the parallel hydraulic cylinder is used, the defect that the expansion and contraction of the first hydraulic cylinder and the second hydraulic cylinder are not synchronous due to the adjustment errors of the oil inlet flow valve and the oil discharge flow valve is avoided, and the problems of equipment damage, precision deterioration, energy consumption increase and the like are avoided when the parallel hydraulic cylinder is used, so that the reliability is better.

Inventors

  • LIU XIAOCHEN
  • LIAN LINA

Assignees

  • 洛阳博通液压机械有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (9)

  1. 1. The parallel hydraulic cylinder structure is characterized by comprising a mounting seat (2), a first hydraulic cylinder (1) is mounted on one side of the top end of the mounting seat (2), a second hydraulic cylinder (5) is mounted on the other side of the top end of the mounting seat (2), a bracket (10) with an inverted U-shaped structure is mounted in the middle of the top end of the mounting seat (2), a forced synchronization assembly (8) is mounted between the bracket (10) and a piston rod of the first hydraulic cylinder (1) and a piston rod of the second hydraulic cylinder (5), the forced synchronization assembly (8) comprises a first connecting rod (81), a connecting shaft (82), a synchronization rotating rod (83) and a second connecting rod (84), the connecting shaft (82) is mounted in the middle of the top end of the bracket (10), the synchronization rotating rod (83) is mounted at the bottom end of the connecting shaft (82), the first connecting rod (81) is mounted on the upper portion of the piston rod of the first hydraulic cylinder (1) and one end of the synchronization rotating rod (83), and the second connecting rod (84) is mounted on the upper portion of the second hydraulic cylinder (5) and the other end of the synchronization rotating rod (83).
  2. 2. The parallel hydraulic cylinder structure according to claim 1 is characterized in that a linkage oil inlet pipe (3) is arranged between an oil inlet of the first hydraulic cylinder (1) and an oil inlet of the second hydraulic cylinder (5), and an oil inlet flow valve (4) is arranged at the oil inlet of the linkage oil inlet pipe (3).
  3. 3. The parallel hydraulic cylinder structure according to claim 2 is characterized in that a linkage oil drain pipe (6) is arranged between the oil drain port of the first hydraulic cylinder (1) and the oil drain port of the second hydraulic cylinder (5), and an oil drain flow valve (7) is arranged at an oil inlet of the linkage oil drain pipe (6).
  4. 4. The parallel hydraulic cylinder structure according to claim 1, wherein the mounting base (2) and the bottoms of the first hydraulic cylinder (1) and the second hydraulic cylinder (5) are provided with a synchronous limiting mechanism (9) together, and the synchronous limiting mechanism (9) comprises a slot (91), an inserting block (92), a limiting hole (93), a limiting block (94), a linkage plate (95), a sliding cavity (96), a bidirectional screw rod (97) and a motor (98).
  5. 5. The parallel hydraulic cylinder structure according to claim 4, wherein the number of the inserting blocks (92) and the number of the inserting slots (91) are two, the two inserting blocks (92) are respectively arranged at the bottom ends of the first hydraulic cylinder (1) and the second hydraulic cylinder (5), the inserting slots (91) are arranged at the matching parts of the installing seat (2) and the inserting blocks (92), and the vertical sections of the inserting blocks (92) and the inserting slots (91) are of inverted T-shaped structures.
  6. 6. The parallel hydraulic cylinder structure according to claim 5, wherein the limiting holes (93) are formed in two side walls of each insertion block (92), the sliding cavity (96) is reserved in the middle of the mounting seat (2), the bidirectional screw rod (97) is mounted in the middle of the sliding cavity (96), two linkage plates (95) are arranged, and the two linkage plates (95) are symmetrically mounted on the bidirectional screw rod (97).
  7. 7. The parallel hydraulic cylinder structure according to claim 6, wherein the limiting block (94) is reserved on each linkage plate (95) opposite to the limiting hole (93), and the side wall of the slot (91) opposite to the limiting block (94) is of a hollow structure.
  8. 8. The parallel hydraulic cylinder structure according to claim 1, wherein the top end of the connecting shaft (82) is rotatably connected with the bracket (10), the bottom end of the connecting shaft (82) is welded with the synchronous rotating rod (83), one end of the connecting rod I (81) is rotatably connected with a piston rod of the first hydraulic cylinder (1), and the other end of the connecting rod I (81) is rotatably connected with a piston rod of the second hydraulic cylinder (5).
  9. 9. The parallel hydraulic cylinder structure according to claim 8, wherein one end of the second connecting rod (84) is rotatably connected with a piston rod of the second hydraulic cylinder (5), and the other end of the second connecting rod (84) is rotatably connected with the piston rod of the second hydraulic cylinder (5).

Description

Parallel hydraulic cylinder structure Technical Field The application relates to the technical field of parallel hydraulic cylinders, in particular to a parallel hydraulic cylinder structure. Background The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston, and the hydraulic cylinder basically consists of a cylinder barrel, a cylinder cover, the piston, a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device are necessary for other devices depending on the specific application. The existing parallel hydraulic cylinders mainly connect oil inlet pipes of all the single hydraulic cylinders together to realize synchronous oil inlet of all the single hydraulic cylinders, and simultaneously connect oil outlet pipes of all the single hydraulic cylinders together to realize synchronous oil discharge of all the single hydraulic cylinders, and synchronous oil inlet and synchronous oil discharge of all the single hydraulic cylinders are realized through an oil inlet flow valve and an oil discharge flow valve, so that synchronous telescopic adjustment of all the single hydraulic cylinders on the parallel hydraulic cylinders is realized. The existing parallel hydraulic cylinders can realize synchronous action of all the single hydraulic cylinders through synchronous oil inlet and synchronous oil discharge, but oil flow in all the single hydraulic cylinders is easy to deviate due to uneven adjustment of flow valves, so that asynchronous expansion and contraction adjustment among all the single hydraulic cylinders is caused, and further the problems of equipment damage, poor precision, large energy consumption and the like are caused. Disclosure of Invention Aiming at the defects existing in the prior art, the application aims to provide a parallel hydraulic cylinder structure which can ensure synchronous expansion and contraction of a first hydraulic cylinder and a second hydraulic cylinder in a forced linkage mode and avoid the defect that the expansion and contraction of the first hydraulic cylinder and the second hydraulic cylinder are asynchronous due to adjustment errors of an oil inlet flow valve and an oil discharge flow valve. The above-mentioned application purpose of the application is realized through the following technical scheme: The utility model provides a parallel hydraulic cylinder structure, includes the mount pad, first pneumatic cylinder is installed to mount pad top one side, the second pneumatic cylinder is installed to mount pad top opposite side, mount pad top mid-mounting has a support of falling U type structure, the support with install one jointly between the piston rod of first pneumatic cylinder and the piston rod of second pneumatic cylinder and force synchronous subassembly, force synchronous subassembly to include connecting rod one, connecting axle, synchronous bull stick and connecting rod two, wherein the connecting axle is installed top middle part in the support, synchronous bull stick is installed the connecting axle bottom, connecting rod one is installed piston rod upper portion of first pneumatic cylinder with synchronous bull stick one end, connecting rod two are installed piston rod upper portion of second pneumatic cylinder with synchronous bull stick other end. Optionally, a linkage oil inlet pipe is installed between the oil inlet of the first hydraulic cylinder and the oil inlet of the second hydraulic cylinder, and an oil inlet flow valve is installed at the oil inlet of the linkage oil inlet pipe. Optionally, a linkage oil drain pipe is installed between the oil drain port of the first hydraulic cylinder and the oil drain port of the second hydraulic cylinder, and an oil drain flow valve is installed at an oil inlet of the linkage oil drain pipe. Optionally, the mount pad with first pneumatic cylinder bottom and second pneumatic cylinder bottom installs a synchronous stop gear jointly, synchronous stop gear includes slot, inserted block, spacing hole, stopper, linkage board, smooth chamber, two-way lead screw, motor. Optionally, the insert block and the slot are two, the two insert blocks are respectively installed at the bottom ends of the first hydraulic cylinder and the second hydraulic cylinder, the slot is formed in the matching position of the insert block on the mounting seat, and the vertical section of the insert block and the slot is of an inverted T-shaped st