A long-stroke hydraulic assist support device

Abstract

The application discloses a long-stroke hydraulic auxiliary supporting device, which is characterized by comprising a clamping body, a slide column, a two-way hydraulic cylinder, a supporting head, a spring I, a T-shaped screw and a locking mechanism. The slide column is arranged in the central hole of the clamping body; the two-way hydraulic cylinder is fixed on the connecting plate at one end of the clamping body; the slide column is fixed with the supporting head at the end far from the connecting plate, and an installation hole with a small diameter is formed in the other end; the spring I is arranged in the installation hole, and the T-shaped screw is arranged at the end; one end of the T-shaped screw is fixed on the piston rod of the two-way hydraulic cylinder, and the other end is abutted on the spring I; a limiting groove is formed in one end of the wall of the slide column, and a plurality of locking grooves are formed in the opposite end; the clamping body is screwed into the threaded groove and abutted in the limiting groove of the slide column; and the locking mechanism is arranged in the installation groove of the clamping body and abutted in one of the locking grooves when the slide block is slid to the position. The application has the advantages of long stroke, wide application range, high supporting stability and simple structure, and is suitable for the conditions of needing auxiliary supporting stroke and needing auxiliary supporting stroke.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic auxiliary support technology for mechanical clamps, and relates to an auxiliary support device. Background Technology

[0002] China's machining industry is developing rapidly, with products constantly being updated and upgraded. The trial production of new products relies heavily on tooling and fixtures. Machine tool fixtures are used to fix workpieces, and complete positioning and clamping are prerequisites for workpiece machining. Since most workpieces are irregular in reality, the unsupported portions after complete positioning lack effective support, resulting in insufficient rigidity. Therefore, auxiliary supports are needed to increase workpiece rigidity and ensure machining quality. Among hydraulic fixtures, general hydraulic auxiliary support cylinders have a small support range and are expensive. Linear cylinders, on the other hand, are cheaper and have a longer stroke. When dealing with large workpieces, the longer stroke allows for more clearance during workpiece disassembly. Therefore, it is essential to research a long-stroke hydraulic auxiliary support fixture using linear cylinders. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems in the prior art and provide a long-stroke hydraulic auxiliary support device. This device has a long stroke and is suitable for both situations requiring a large auxiliary support stroke and situations requiring a small auxiliary support stroke. It has a wide range of applications, high support stability, simple structure, and low cost.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a long-stroke hydraulic auxiliary support device, comprising a clamping body, a sliding column, a locking mechanism, and a bidirectional hydraulic cylinder; the clamping body has a central hole, in which a sliding column with a small clearance fit is installed; a connecting plate is fixed to one end of the clamping body, and the bidirectional hydraulic cylinder is fixed to the connecting plate; a support head is fixedly installed at the end of the sliding column away from the connecting plate, and a mounting hole with a small end diameter is opened inside the other end; a spring I is installed in the mounting hole, and a T-shaped screw with a small clearance fit is installed at the end; one end of the T-shaped screw is fixed to the piston rod of the bidirectional hydraulic cylinder, and the other end abuts against the spring I; a limit groove is opened at one end of the peripheral wall of the sliding column, and multiple locking grooves are opened at the opposite end; a threaded groove is opened at the position opposite to the limit groove of the clamping body, and a mounting groove is opened at the position opposite to one of the locking grooves; a set screw is threaded into the threaded groove of the clamping body and abuts against the limit groove of the sliding column; the locking mechanism is installed in the mounting groove of the clamping body, and when the slider slides to the position, the locking mechanism is tightened against one of the locking grooves.

[0005] More preferably, the locking mechanism includes locking head I and locking head II, two sets of guide sleeves, two springs II, a swing block, pins, a grooved pad, and a one-way hydraulic cylinder; the clamping body is thicker at the mounting groove position; one end of locking head I and locking head II is set as a symmetrical inclined surface, and the other end is fixed to the swing block by pins, and a step is provided on the side wall of the other end; the two sets of guide sleeves are respectively fixed to the mounting groove wall of the clamping body; locking head I and locking head II are respectively located in the two sets of guide sleeves, and each locking groove is a V-shaped surface with the same inclination angle between the bottom surface and the inclined surface of locking head I and locking head II; the two springs II are respectively sleeved on locking head I and locking head II and are located between the two sets of guide sleeves and the step of locking head I and the step of locking head II; the one-way hydraulic cylinder is fixed to the clamping body by the grooved pad, and its piston rod is abutted on the swing block. When the slider slides to the locking groove, aligning it with locking heads I and II, the one-way hydraulic cylinder actuates. Its piston rod pushes the swing block, causing locking heads I and II to press firmly against the locking groove of the slide column. At this point, the inclined surfaces of locking heads I and II are in close contact with the inclined surface of the locking groove. Because this locking mechanism can automatically fine-tune the angle, it ensures that the inclined surfaces of locking heads I and II are completely in contact with the V-shaped surface of the slide column, achieving locking. This device offers high support stability. When support is no longer needed, the one-way hydraulic cylinder retracts, and the swing block, locking heads I and II, under the action of spring II, disengage from the locking groove of the slider, allowing the slider to move freely.

[0006] More preferably, the connecting plate has a bidirectional oil passage, which is respectively connected to the cavities at both ends of the bidirectional hydraulic cylinder piston.

[0007] During operation, the locking mechanism disengages from the locking groove of the slider, the bidirectional hydraulic cylinder actuates, and the piston rod pushes the T-shaped screw to slide along the mounting hole of the slide column, thereby actuating the spring and moving the slide column. The support head is supported at the target position, and one of the locking grooves of the slide column is aligned with the locking mechanism. When the locking mechanism actuates, the slide column is locked and no longer moves, ensuring high support stability. When support is not needed, the locking mechanism actuates, disengaging from the locking groove of the slider. The bidirectional hydraulic cylinder actuates in the opposite direction, causing the T-shaped screw to retract. The slider retracts under the action of spring I, thus moving the support head away from the target position. This invention uses a linear cylinder, and the mounting hole of the slider is long enough, resulting in a sufficiently long stroke. Because multiple locking grooves are provided on the slider, the appropriate locking groove can be selected according to the stroke requirements, making it suitable for both situations requiring large and small auxiliary support strokes, thus having a wide range of applications. Furthermore, the large diameter of the T-shaped screw in this invention is smaller than the inner diameter of the slide column, so when the T-shaped screw extends outward, there is no hard contact, ensuring reliable sliding, preventing interference, and reducing wear. In summary, the present invention has a long stroke, making it suitable for both situations requiring a large auxiliary support stroke and situations requiring a small auxiliary support stroke. It has a wide range of applications, high support stability, simple structure, and low cost. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0009] Figure 2 This is the front view of the present invention;

[0010] Figure 3 for Figure 2 AA sectional view. Detailed Implementation

[0011] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0012] like Figures 1 to 3As shown, this embodiment includes a clamping body 1, a sliding column 2, a locking mechanism 3, and a bidirectional hydraulic cylinder 15. The clamping body 1 has a central hole, in which a sliding column 2 with a small clearance fit is installed. A connecting plate 8 is fixed to one end of the clamping body 1, and the bidirectional hydraulic cylinder 15 is fixed to the connecting plate 8. A support head 10 is fixedly installed at the end of the sliding column 2 away from the connecting plate 8, and a mounting hole with a small end diameter is opened inside the other end; a spring I 9 is installed in the mounting hole, and a T-shaped screw 7 with a small clearance fit is installed at the end. One end of the T-shaped screw 7 is fixed to the piston rod 14 of the bidirectional hydraulic cylinder 15, and the other end abuts against the spring I 9. In this embodiment, the connecting plate 8 has a bidirectional oil passage, which connects to the cavities at both ends of the piston of the bidirectional hydraulic cylinder 15. A limit groove 12 is opened at one end of the peripheral wall of the sliding column 2, and multiple locking grooves 13 are opened at the opposite end. The clamp body 1 has a threaded groove opposite to the limiting groove 12 and an installation groove opposite to one of the locking grooves 13. The set screw 4 is threaded into the threaded groove 11 of the clamp body 1 and abuts against the limiting groove 12 of the slide column 2. The locking mechanism 3 is installed in the installation groove of the clamp body 1. When the slide block 2 slides into place, the locking mechanism 3 is pressed against one of the locking grooves 13. The locking mechanism 3 in this embodiment includes a locking pressure head I 36 and a locking pressure head II 32, two sets of guide sleeves 31, two springs II 33, a swing block 34, a pin 35, a grooved pad 6, and a one-way hydraulic cylinder 16. The clamp body 1 is thicker in the installation groove. One end of the locking pressure head I 36 and the locking pressure head II 32 is set as a symmetrical inclined surface, and the other end is fixed to the swing block 34 by the pin 35, and a step is provided on the side wall of the other end. The two sets of guide sleeves 31 are fixed to the wall of the installation groove of the clamp body 1. Locking heads I 36 and II are located within two sets of guide sleeves 31, respectively. Each locking groove 13 is a V-shaped surface with its bottom surface having the same inclination angle as the inclined surfaces of locking heads I 36 and II. Two springs II 33 are respectively fitted onto locking heads I 36 and II 32 and are located between the steps of the two sets of guide sleeves 31 and the steps of locking heads I 36 and II 32. A one-way hydraulic cylinder 16 is fixed to the clamping body 1 by a grooved pad 6, and its piston rod is abutted against the swing block 34. When the slider 2 slides to the point where the locking groove 13 is directly opposite locking heads I 36 and II 32, the one-way hydraulic cylinder 16 actuates, and its piston rod abuts the swing block 34, causing locking heads I 36 and II 32 to press tightly against the locking groove 13 of the slider 2. At this time, the inclined surfaces of locking heads I 36 and II 32 are in close contact with the inclined surfaces of the locking groove 13. Because the locking mechanism 3 can automatically fine-tune the angle, it can ensure that the inclined surfaces of the locking pressure head I 36 and the locking pressure head II 32 can completely fit against the V-shaped surface of the slide column 2, achieving locking. This device has high support stability. When support is not needed, the one-way hydraulic cylinder 16 retracts, and the swing block 34, locking pressure head I 36, and locking pressure head II 32 exit the locking groove 13 of the slider 2 under the action of the spring II 33, allowing the slider 2 to move freely.

[0013] Of course, there are other embodiments of the present invention. Without departing from the spirit and essence of the present invention, those skilled in the art can make corresponding changes and modifications according to the present invention. However, these corresponding changes and modifications should all be considered improvements of equivalent technology and fall within the protection scope of the claims of the present invention.

Claims

1. A long-stroke hydraulic assist support device, characterized by: The system includes a clamping body (1), a sliding column (2), a locking mechanism (3), and a two-way hydraulic cylinder (15). The clamping body (1) has a central hole, in which a sliding column (2) with a small clearance fit is installed. A connecting plate (8) is fixed to one end of the clamping body (1), and the two-way hydraulic cylinder (15) is fixed to the connecting plate (8). A support head (10) is fixedly installed at one end of the sliding column (2) away from the connecting plate (8), and a mounting hole with a small end diameter is opened inside the other end. A spring I (9) is installed in the mounting hole, and a T-shaped screw (7) with a small clearance fit is installed at the end. One end of the T-shaped screw (7) is fixed to the piston rod of the two-way hydraulic cylinder (15). 14) On the other end, it is abutted against the spring I (9); one end of the peripheral wall of the sliding column (2) has a limit groove (12), and the other end has multiple locking grooves (13); the clamping body (1) has a threaded groove at the position opposite to the limit groove (12), and an installation groove at the position opposite to one of the locking grooves (13); the set screw (4) is threaded into the threaded groove (11) of the clamping body (1) and abutted against the limit groove (12) of the sliding column (2); the locking mechanism (3) is installed in the installation groove of the clamping body (1), and when the slider slides to the position, the locking mechanism (3) is abutted against one of the locking grooves (13); The locking mechanism (3) includes a locking head I (36) and a locking head II (32), two sets of guide sleeves (31), two springs II (33), a swing block (34), a pin (35), a grooved pad (6), and a one-way hydraulic cylinder (16); the clamping body (1) is thicker at the mounting groove position; one end of the locking head I (36) and the locking head II (32) is set as a relatively symmetrical inclined surface, and the other end is fixed to the swing block (34) by the pin (35), and a step is provided on the side wall of the other end; the two sets of guide sleeves (31) are respectively fixed in the mounting groove of the clamping body (1). On the wall; locking head I (36) and locking head II are located in two sets of guide sleeves (31) respectively. Each locking groove (13) is a V-shaped surface with the same inclination angle as the bottom surface of locking head I (36) and locking head II; two springs II (33) are respectively sleeved on locking head I (36) and locking head II (32) and located between the two sets of guide sleeves (31) and the steps of locking head I (36) and locking head II (32); one-way hydraulic cylinder (16) is fixed on clamp body (1) by grooved pad (6), and its piston rod is connected to swing block (34).

2. The long-stroke hydraulic auxiliary support device according to claim 1, characterized in that: The connecting plate (8) has a bidirectional oil passage, which is connected to the cavities at both ends of the piston of the bidirectional hydraulic cylinder (15).

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