Multi-stage hydraulic oil cylinder

Abstract

The utility model discloses a multi-stage hydraulic oil cylinder which comprises a mounting plate and a mounting seat, a cylinder body is arranged at the upper end of the mounting seat, a first piston rod is slidably connected into the cylinder body, a second piston rod is slidably connected into the first piston rod, and the multi-stage hydraulic oil cylinder further comprises a quick release mechanism. The quick release mechanism comprises an inserting block, fixing grooves, a rotating ring, a sliding column, a fixing block, an extrusion strip and an extrusion block, the inserting block is arranged in the middle of the upper end of the mounting plate, the fixing grooves which are evenly distributed are formed in the outer surface of the inserting block, and the rotating ring is slidably connected into the circular sliding groove in the middle of the mounting base; according to the multistage hydraulic oil cylinder, through cooperation of the fixing blocks and the fixing grooves, when the hydraulic cylinder needs to be overhauled, the hydraulic cylinder can be rapidly disassembled and assembled by poking a poking rod, the hydraulic cylinder can be rapidly disassembled and assembled, the hydraulic cylinder can be rapidly disassembled and assembled, and the hydraulic cylinder can be rapidly disassembled and assembled; the operation is simpler and more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic oil cylinder technical field, concretely is a kind of multistage hydraulic oil cylinder. BACKGROUND

[0002] Multistage hydraulic oil cylinder is a kind of hydraulic cylinder by two or more than two piston sets, usually used in the mechanical equipment needing longer stroke, its working principle is based on Pascal's law, utilizes liquid transmission pressure to realize the push-pull action of piston, the structure of multistage hydraulic oil cylinder includes cylinder barrel, piston, sealing element, inlet and outlet oil pipe and so on, each piston has two action surfaces, can realize bidirectional push-pull;

[0003] Traditional multistage hydraulic oil cylinder is by a plurality of piston sets, usually be provided with oil inlet in the lower end of cylinder body, be provided with oil outlet in the upper end of cylinder body, realize the expansion of piston by the entering circulation of hydraulic oil;

[0004] This kind of multistage hydraulic oil cylinder has the following shortcomings: due to the different use requirements of hydraulic cylinder, the posture angle of cylinder body is different when installing hydraulic cylinder, however, hydraulic cylinder will appear the phenomenon of oil leakage after long time use, and the hydraulic cylinder installed at part angle must be disassembled to carry out maintenance, however, hydraulic cylinder is usually fixed and installed by a plurality of bolts when installing, and bolt needs to be disassembled one by one when disassembling, operation is complex, for this, we propose a kind of multistage hydraulic oil cylinder. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems to overcome the defects of prior art, provide a kind of multistage hydraulic oil cylinder, by the cooperation of fixed block and fixed slot, when needing to overhaul, push the push rod to be quickly disassembled, it is more simple and convenient to operate, can effectively solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of multistage hydraulic oil cylinder, including mounting plate and mounting seat, the upper end of mounting seat is provided with cylinder body, the inside of cylinder body is slidably connected with piston rod one, the inside of piston rod one is slidably connected with piston rod two, further include quick release mechanism;

[0007] The quick dismounting mechanism comprises a plug-in block, a fixing groove, a rotating ring, a sliding column, a fixing block, an extrusion strip and an extrusion block, the middle part of the upper end of the mounting plate is provided with the plug-in block, the outer surface of the plug-in block is provided with the uniformly distributed fixing groove, the rotating ring is slidably connected in the smooth groove of the middle part of the mounting seat, the symmetrically distributed sliding columns are arranged in the mounting groove of the middle part of the mounting seat, the fixing blocks are slidably connected between the horizontally adjacent sliding columns, the fixing blocks are matched with the horizontally adjacent fixing grooves, the inner wall of the rotating ring is provided with the uniformly distributed extrusion strip, the fixing blocks away from the center of the plug-in block are provided with the extrusion blocks, the extrusion blocks are in contact with the horizontally adjacent extrusion strips, the hydraulic cylinder can be quickly dismounted by pulling the pull rod when the hydraulic cylinder needs to be overhauled, and the operation is more convenient.

[0008] Further, the quick dismounting mechanism further comprises springs, the springs are arranged between the side of the fixing block close to the center of the plug-in block and the inner wall of the mounting groove, and the springs are sleeved on the outer surfaces of the sliding columns to provide the rebound force for the fixing blocks.

[0009] Further, the quick dismounting mechanism further comprises a pull rod, the pull rod is arranged on the front side of the outer surface of the rotating ring, the pull rod extends to the outside of the mounting seat, and the rotating ring is driven.

[0010] Further, the lower end of the outer surface of the cylinder body is provided with an oil inlet, the upper end of the outer surface of the cylinder body is provided with an oil outlet, and the hydraulic oil is circulated.

[0011] Further, the threaded hole of the front side right end of the mounting seat is threadedly connected with a lock thread rod, the upper end middle part of the pull rod is provided with a locking hole, the lock thread rod is matched with the locking hole in the mounting, and the pull rod is locked.

[0012] Further, the upper end middle part of the lock thread rod is provided with a knob, and the lock thread rod is driven.

[0013] Further, the upper end of the piston rod two is provided with a top plate, and the top plate is provided with a top weight.

[0014] Compared with the prior art, the multi-stage hydraulic oil cylinder has the following advantages:

[0015] When the rotating ring is rotated to drive the extrusion strip to rotate, the extrusion strip gradually moves away from the extrusion block, at the same time, the fixing block gradually shrinks to the inside of the mounting groove under the action force of the spring and is separated from the fixing groove, so that the locking of the cylinder body is released, the hydraulic cylinder can be quickly dismounted by pulling the pull rod when the hydraulic cylinder needs to be overhauled, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the utility model.

[0018] Figure 3 It is the structure schematic view of the top view of the utility model;

[0019] Figure 4 It is the structure schematic view of the utility model mounting plate;

[0020] Figure 5 It is the structure schematic view of the utility model quick release mechanism.

[0021] In the figure: 1 mounting plate, 2 knob, 3 mounting seat, 4 cylinder body, 5 piston rod one, 6 piston rod two, 7 top plate, 8 quick release mechanism, 81 plug-in block, 82 fixed groove, 83 rotating ring, 84 slide column, 85 fixed block, 86 spring, 87 extrusion strip, 88 extrusion block, 89 lever, 9 oil outlet, 10 oil inlet, 11 locking hole, 12 lock thread rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides a kind of technical scheme of multistage hydraulic cylinder, including mounting plate 1 and mounting seat 3, the upper end of mounting seat 3 is provided with cylinder body 4, piston rod one 5 is slidably connected in the inside of cylinder body 4, piston rod two 6 is slidably connected in the inside of piston rod one 5, the lower end of the outer surface of cylinder body 4 is provided with oil inlet 10, the upper end of the outer surface of cylinder body 4 is provided with oil outlet 9, further include quick release mechanism 8, the upper end of piston rod two 6 is provided with top plate 7, need first fixedly set mounting plate 1 in preset position, then the oil outlet of external oil pump is connected with the oil inlet 10 of the lower end of cylinder body 4 by pipeline, the oil outlet 9 of the upper end of cylinder body 4 is connected with external oil tank by pipeline, then open external oil pump and pump into the inside of cylinder body 4 by oil inlet 10 with hydraulic oil, make hydraulic oil circulate between cylinder body 4 and external oil tank, so that piston rod one 5 and piston rod two 6 telescopic;

[0024] The quick release mechanism 8 comprises a plug-in block 81, a fixing groove 82, a rotating ring 83, a sliding column 84, a fixing block 85, an extrusion strip 87 and an extrusion block 88, the upper middle part of the mounting plate 1 is provided with the plug-in block 81, the outer surface of the plug-in block 81 is provided with the uniformly distributed fixing groove 82, the rotating ring 83 is slidably connected in the circular sliding groove in the middle part of the mounting base 3, the mounting groove in the middle part of the mounting base 3 is provided with the symmetrically distributed sliding column 84, the fixing block 85 is slidably connected between the horizontally adjacent two sliding columns 84, the fixing block 85 is matched and mounted with the horizontally adjacent fixing groove 82, the inner wall of the rotating ring 83 is provided with the uniformly distributed extrusion strip 87, the side, away from the center of the plug-in block 81, of the fixing block 85 is provided with the extrusion block 88, the extrusion block 88 is in contact with the horizontally adjacent extrusion strip 87, the quick release mechanism 8 further comprises a spring 86, the spring 86 is arranged between the side, close to the center of the plug-in block 81, of the fixing block 85 and the inner wall of the mounting groove, the spring 86 is sleeved on the outer surface of the sliding column 84, the quick release mechanism 8 further comprises a lever 89, the lever 89 is arranged on the front side of the outer surface of the rotating ring 83, the lever 89 extends to the outside of the mounting base 3, the threaded hole in the front side right end of the mounting base 3 is threadedly connected with a lock thread rod 12, the upper middle part of the lever 89 is provided with a locking hole 11, the lock thread rod 12 is matched and mounted with the locking hole 11, the upper middle part of the lock thread rod 12 is provided with the knob 2, if the cylinder body 4 needs to be overhauled, first rotate the knob 2 counterclockwise, the knob 2 drives the lock thread rod 12 to rotate in the threaded hole, and then ascend to disengage the locking hole 11 and thus release the locking of the lever 89, then push the lever 89 leftwards, the lever 89 drives the rotating ring 83 to rotate and drives the extrusion strip 87 to rotate, since the side, in contact with the extrusion strip 87, of the extrusion block 88 is an inclined surface, in the process of rotation, the extrusion strip 87 gradually moves away from the extrusion block 88, in this process, the spring 86 gives the fixed block 85 a rebound force, so that it gradually retracts into the mounting groove, thereby disengaging the fixing groove 82, and the unlocking of the cylinder body 4 is realized, then the cylinder body 4 can be removed, after the overhaul is completed, the above operation can be repeated according to the reverse steps, through the cooperation of the fixing block 85 and the fixing groove 82, the hydraulic cylinder can be quickly disassembled by pushing the lever 89 when it needs to be overhauled, and the operation is more convenient.

[0025] The working principle of the multi-stage hydraulic oil cylinder is as follows: when the multi-stage hydraulic oil cylinder is used, the mounting plate 1 needs to be fixedly arranged at a preset position, then the oil outlet of the external oil pump is connected to the oil inlet 10 at the lower end of the cylinder body 4 through a pipeline, the oil outlet 9 at the upper end of the cylinder body 4 is connected to the external oil tank through a pipeline, then the external oil pump is started to pump the hydraulic oil into the cylinder body 4 through the oil inlet 10, the hydraulic oil is circulated between the cylinder body 4 and the external oil tank, so that the piston rod one 5 and the piston rod two 6 are extended and retracted, if the cylinder body 4 needs to be overhauled, the knob 2 is counterclockwise rotated, the knob 2 drives the lock rod 12 to rotate in the threaded hole, then the lock rod 89 is unlocked, the knob 2 is counterclockwise rotated, the rotating ring 83 is driven to rotate and the extrusion strip 87 is driven to rotate, since the contact surface of the extrusion block 88 and the extrusion strip 87 is an inclined surface, in the rotating process, the extrusion strip 87 gradually moves away from the extrusion block 88, in the process, the spring 86 provides a rebound force to the fixed block 85, so that the fixed block 85 is gradually retracted into the mounting groove, so as to be separated from the fixed groove 82, the cylinder body 4 is unlocked, then the cylinder body 4 can be disassembled, and after the overhaul is completed, the above operation is repeated according to the reverse steps.

[0026] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A multi-stage hydraulic oil cylinder, comprising a mounting plate (1) and a mounting base (3), the upper end of the mounting base (3) is provided with a cylinder body (4), the inside of the cylinder body (4) is slidably connected with a piston rod one (5), the inside of the piston rod one (5) is slidably connected with a piston rod two (6), characterized in that: Also include quick release mechanism (8); The quick release mechanism (8) comprises a plug-in block (81), a fixed groove (82), a rotating ring (83), a sliding column (84), a fixed block (85), an extrusion strip (87) and an extrusion block (88), the upper end of the installation plate (1) is provided with the plug-in block (81), the outer surface of the plug-in block (81) is provided with the uniformly distributed fixed groove (82), the rotating ring (83) is slidably connected in the smooth groove of the middle part of the mounting seat (3), the mounting groove of the middle part of the mounting seat (3) is provided with the symmetrically distributed sliding column (84), the fixed block (85) is slidably connected between the two horizontally adjacent sliding columns (84), the fixed block (85) is mounted in cooperation with the horizontally adjacent fixed groove (82), the inner wall of the rotating ring (83) is provided with the uniformly distributed extrusion strip (87), the side, away from the center of the plug-in block (81), of the fixed block (85) is provided with the extrusion block (88), and the extrusion block (88) is in contact with the horizontally adjacent extrusion strip (87).

2. A multi-stage hydraulic cylinder according to claim 1, characterized in that: The quick release mechanism (8) further comprises a spring (86), and the spring (86) is arranged between the side, close to the center of the plug-in block (81), of the fixed block (85) and the inner wall of the mounting groove.

3. A multi-stage hydraulic cylinder according to claim 1, characterized in that: The quick release mechanism (8) further comprises a lever (89), and the lever (89) is arranged on the outer surface of the rotating ring (83).

4. A multi-stage hydraulic cylinder as claimed in claim 1, characterized in that: The lower end of the outer surface of the cylinder body (4) is provided with an oil inlet (10), and the upper end of the outer surface of the cylinder body (4) is provided with an oil outlet (9).

5. A multi-stage hydraulic cylinder according to claim 3, characterized in that: The threaded hole in the front right end of the mounting seat (3) is threadedly connected with a lock rod (12), the upper end of the lever (89) is provided with a locking hole (11), and the lock rod (12) is mounted in cooperation with the locking hole (11).

6. A multi-stage hydraulic cylinder according to claim 5, characterized in that: The upper end of the lock rod (12) is provided with a knob (2).

7. A multi-stage hydraulic cylinder as claimed in claim 1, characterized in that: The upper end of the piston rod two (6) is provided with a top plate (7).

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