CN-118342306-B - Long-stroke hydraulic auxiliary supporting device

Abstract

The invention discloses a long-stroke hydraulic auxiliary supporting device, which is characterized in that a sliding column is arranged in a central hole of a clamp body, a bidirectional hydraulic cylinder is fixed on a connecting plate at one end of the clamp body, a supporting head is fixedly arranged at one end, far away from the connecting plate, of the sliding column, a mounting hole with a small end diameter is formed in the other end, a spring I is arranged in the mounting hole, a T-shaped screw is arranged at the end, one end of the T-shaped screw is fixed on a piston rod of the bidirectional hydraulic cylinder, the other end of the T-shaped screw is propped against the spring I, a limiting groove is formed in one end of the peripheral wall of the sliding column, a plurality of locking grooves are formed in the opposite other end of the sliding column, a fastening screw is screwed in a threaded groove of the clamp body and propped against the limiting groove of the sliding column, and a locking mechanism is arranged in the mounting groove of the clamp body. The invention has long travel, wide application range, high support stability and simple structure, and is suitable for the situation that the auxiliary support travel is needed to be larger and the situation that the auxiliary support travel is needed to be smaller.

Inventors

• TIAN JIE

Assignees

• 保定向阳航空精密机械有限公司

Dates

Publication Date

20260512

Application Date

20231231

Claims (2)

1. 1. A long-stroke hydraulic auxiliary supporting device is characterized by comprising a clamp body (1), a slide column (2), a locking mechanism (3) and a bidirectional hydraulic cylinder (15), wherein the clamp body (1) is provided with a central hole, the slide column (2) in small clearance fit is arranged in the central hole, one end of the clamp body (1) is fixedly provided with a connecting plate (8), the bidirectional hydraulic cylinder (15) is fixedly arranged on the connecting plate (8), one end of the slide column (2) far away from the connecting plate (8) is fixedly provided with a supporting head (10), the other end of the slide column is internally provided with a mounting hole with small end diameter, a spring I (9) is arranged in the mounting hole, the end of the T-shaped screw (7) is fixedly arranged on a piston rod (14) of the bidirectional hydraulic cylinder (15), the other end of the T-shaped screw (7) is propped against the spring I (9), one end of the slide column (2) is provided with a limiting groove (12), the other opposite end of the clamp body (1) is provided with a plurality of locking grooves (13), the position opposite to the limiting groove (12) is provided with a thread groove, the position opposite to one of the locking grooves (13) is opposite to the locking grooves (4) and is propped against the locking mechanism (1) in the thread groove (11), when the sliding block slides in place, the locking mechanism (3) is tightly propped in one of the locking grooves (13); The locking mechanism (3) comprises a locking pressure head I (36) and a locking pressure head II (32), two groups of guide sleeves (31), two springs II (33), a swinging block (34), pins (35), a groove type cushion block (6) and a one-way hydraulic cylinder (16), wherein the clamp body (1) is thicker in the position of an installation groove, one ends of the locking pressure head I (36) and the locking pressure head II (32) are arranged as symmetrical inclined surfaces, the other ends of the locking pressure head I (36) and the locking pressure head II (32) are respectively fixed on the swinging block (34) through the pins (35), steps are arranged on the side wall of the other end of the locking pressure head II, the two groups of guide sleeves (31) are respectively fixed on the installation groove wall of the clamp body (1), the locking pressure head I (36) and the locking pressure head II are respectively located in the two groups of guide sleeves (31), the inclined surfaces of each locking groove (13) are V-shaped surfaces with the inclined surfaces of the locking pressure head I (36) and the locking pressure II being identical, the two springs II (33) are respectively sleeved on the locking pressure head I (36) and the locking pressure head II (32) and are located between the two groups of guide sleeves (31) and the locking pressure head I) and the step II and the locking pressure head II (16) respectively, and the locking pressure head II) are respectively pressed against the one-way hydraulic cylinder (16) through the two guide sleeves (1).
2. 2. The long-stroke hydraulic auxiliary supporting device according to claim 1, wherein the connecting plate (8) is provided with two-way oil ways which are respectively connected with cavities at two ends of a piston of the two-way hydraulic cylinder (15).

Description

Long-stroke hydraulic auxiliary supporting device Technical Field The invention belongs to the technical field of hydraulic auxiliary support of mechanical clamps, and relates to an auxiliary support device. Background The field of mechanical processing in China is developing at a high speed, products are continuously updated, and the trial production and processing of new products are not separated from the fixture. The machine tool fixture is used for fixing a workpiece, the premise of workpiece machining is that the workpiece needs to be completely positioned and clamped, and because the workpiece is mostly irregular in practice, the lack of effective support at the suspended position after the workpiece is completely positioned leads to insufficient rigidity, and auxiliary support is needed to be added to increase the rigidity of the workpiece so as to ensure the machining quality. In the hydraulic clamp, a common hydraulic auxiliary supporting cylinder has a smaller supporting range and is high in price. The linear cylinder is low in price, the stroke is longer, and more avoidance spaces can be formed when the workpiece is disassembled due to the longer stroke when the large workpiece is handled. Therefore, it is necessary to study a long-stroke hydraulic auxiliary supporting tool by using a linear cylinder. Disclosure of Invention The invention aims to solve the problems in the prior art and provide a long-stroke hydraulic auxiliary supporting device which is long in stroke, suitable for the situation that the auxiliary supporting stroke is large and the situation that the auxiliary supporting stroke is small, wide in application range, high in supporting stability, simple in structure and low in cost. The technical scheme is that the long-stroke hydraulic auxiliary supporting device comprises a clamp body, a sliding column, a locking mechanism and a bidirectional hydraulic cylinder, wherein the clamp body is provided with a central hole, the sliding column in small clearance fit is installed in the central hole, one end of the clamp body is fixedly provided with a connecting plate, the bidirectional hydraulic cylinder is fixed on the connecting plate, a supporting head is fixedly installed at one end of the sliding column far away from the connecting plate, the other end of the sliding column is internally provided with a mounting hole with a small-end diameter, a spring I is installed in the mounting hole, the end of the T-shaped screw is provided with a T-shaped screw in small clearance fit, one end of the T-shaped screw is fixed on a piston rod of the bidirectional hydraulic cylinder, the other end of the T-shaped screw is propped against the spring I, one end of the peripheral wall of the sliding column is provided with a limiting groove, the other opposite end of the sliding column is provided with a plurality of locking grooves, the clamp body is provided with a threaded groove at a position opposite to one of the limiting grooves, the fixing screw is screwed in the threaded groove of the clamp body and propped against the limiting groove of the sliding column, the locking mechanism is installed in the mounting groove of the clamp body, and when the sliding block slides to a position. The locking mechanism comprises a locking pressure head I, a locking pressure head II, two groups of guide sleeves, two springs II, a swinging block, pins, a groove type cushion block and a one-way hydraulic cylinder, wherein the clamp body is thicker in the position of an installation groove, one ends of the locking pressure head I and the locking pressure head II are arranged to be symmetrical inclined planes, the other ends of the locking pressure head I and the locking pressure head II are respectively fixed on the swinging block through the pins, a step is arranged on the side wall of the other end of the locking pressure head II, the two groups of guide sleeves are respectively fixed on the installation groove wall of the clamp body, the locking pressure head I and the locking pressure head II are respectively positioned in the two groups of guide sleeves, each locking groove is a V-shaped surface with the bottom surface identical to the inclined planes of the locking pressure head I and the locking pressure head II, the two springs II are respectively sleeved on the locking pressure head I and the locking pressure head II and are positioned between the steps of the two groups of guide sleeves and the locking pressure head I and the locking pressure head II, the one-way hydraulic cylinder is fixed on the clamp body through the groove type cushion block, and a piston rod of the one-way hydraulic cylinder is propped against the swinging block. When the sliding block slides to the locking groove and is opposite to the locking pressure head I and the locking pressure head II, the unidirectional hydraulic cylinder acts, and the piston rod of the unidirectional hydraulic cylinder swings to enable the locking press