Hydraulic oil cylinder utilizing mechanical positioning and locking

Abstract

The utility model relates to the technical field of hydraulic oil cylinder positioning equipment, and particularly discloses a hydraulic oil cylinder positioned and locked by utilizing machinery, which comprises a cylinder body provided with an oil inlet and an oil outlet on the side wall, and an output end connected with the cylinder body in a sliding manner. Comprising supporting strips symmetrically arranged on the two sides of a cylinder body, a telescopic rod vertically connected to the supporting strips in a sliding mode, a fixing structure used for fixing the height of the telescopic rod and a locking structure used for locking the output end and preventing the output end from deflecting. The locking structure comprises a clamping gear coaxially connected to the output end, connecting frames symmetrically and fixedly connected to the tops of the corresponding telescopic rods, clamping groove rings symmetrically and slidably connected to the connecting frames and capable of being clamped and fixed to the clamping gear, and driving pieces for driving the clamping groove rings to slide are further arranged on the connecting frames. The connecting frames are symmetrically and fixedly connected to the tops of the corresponding telescopic rods, and the other ends of the connecting frames are fixedly connected to the tops of the clamping gears. The high-precision positioning and deflection preventing device is suitable for engineering mechanical arms, ship steering engines, heavy stamping equipment and other scenes needing high-precision positioning and deflection preventing, and has wide market prospects.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hydraulic cylinder positioning devices, and discloses a hydraulic cylinder with mechanical positioning and locking. BACKGROUND

[0002] One of the core problems faced by traditional hydraulic cylinders in industrial applications is the insufficient dynamic stability of the output end. Especially in the case of frequent start-stop, high load or vibration environment, the output end is prone to circumferential deflection or axial movement, resulting in a decrease in equipment positioning accuracy and even causing safety accidents. In the prior art, the existing solutions for output end locking have the following significant defects:

[0003] Limitations of hydraulic locking:

[0004] The locking mode that relies on the hydraulic system to maintain pressure (such as a hydraulic control check valve) is prone to internal leakage due to aging of the sealing element or changes in oil temperature, and the locking force decays over time, which cannot meet the long-term static working condition requirements.

[0005] When the hydraulic pump is stopped, the oil line pressure is zero, and the output end is completely lost, which poses a risk of uncontrolled descent of heavy equipment.

[0006] Disadvantages of mechanical locking structure:

[0007] External brake device: additional brake pads, calipers and other components are required, which occupies a large space and is complex to install, and is difficult to adapt to compact equipment. For example, a certain type of crane hydraulic cylinder uses an external disc brake for locking, and the brake response delay is more than 0.5 seconds, which cannot meet the precise positioning requirements.

[0008] Gear rack limiting: the axial displacement is limited by the gear rack meshing, but the tooth surface contact can only inhibit one-way movement and cannot prevent the output end from circumferential deflection. In addition, the meshing gap is easy to occur after the rack wears, resulting in a decrease in positioning accuracy.

[0009] Therefore, the inventor has provided a hydraulic cylinder with mechanical positioning and locking to solve the above problems. CONTENT OF THE UTILITY MODEL

[0010] The utility model aims at solving the problem that the output end of the existing hydraulic cylinder may be deflected.

[0011] In order to achieve the above object, the utility model discloses a kind of hydraulic cylinder of mechanical positioning locking using, including the cylinder body with oil inlet and oil outlet being arranged in side wall, the output end being slidably connected with cylinder body, it is characterized in that, including the support strip being symmetrically arranged in both sides of cylinder body, telescopic rod being slidably connected on support strip and the fixed structure for fixing the height of telescopic rod, further including the locking structure for locking output end and preventing output end from deflecting, the locking structure includes the card and gear being coaxially connected on output end, the connecting frame being symmetrically fixed to the top of corresponding telescopic rod and the other end is all fixed to the top of card and gear, the card and groove ring being symmetrically slidably connected on connecting frame and can be fixed with card and gear, driving element is further provided on connecting frame and is slidably driven card and groove ring.

[0012] Further, the fixed structure includes a groove arranged in the corresponding support strip, a limiting groove vertically arranged on the telescopic rod, and a locking block that can be sequentially clamped into the limiting groove and the groove.

[0013] Further, the connecting frame is provided with a guide groove, and the top of the card and groove ring is fixedly connected with a connecting rod provided with an internal thread.

[0014] Further, the driving element includes a micro motor arranged on the side wall of the connecting frame and electrically connected with a controller, a threaded rod coaxially connected with the output shaft of the micro motor and located in the guide groove, and the connecting rod is threadedly connected with the threaded rod.

[0015] Further, the card and groove ring is provided with a plurality of connecting grooves that can be clamped with the card and gear, and the card and groove rings on both sides can be spliced into a locking ring that fixes the direction of the output end.

[0016] Further, the card and groove ring is provided with a rubber pad.

[0017] The principle and effect of the basic scheme are as follows:

[0018] 1. Full circumferential dynamic locking and anti-deflection capability:

[0019] The design of splicing the locking ring by the double-sided clamping groove ring can form a 360° circumferential constraint on the output end when the groove rings on both sides are driven by the micro motor to slide towards the center and spliced into a complete ring structure, completely eliminating the risk of deflection.

[0020] The multi-tooth surface engagement of the clamping gear and the groove ring provides distributed locking force, which improves the carrying capacity compared to single-point contact locking, and can adapt to higher torque load.

[0021] 2. Intelligent adaptive locking control:

[0022] The electrically controlled driving element realizes precise linkage between locking state and hydraulic action:

[0023] When the hydraulic system starts, the controller sends a signal to the micro motor synchronously, drives the threaded rod to separate the clamping groove ring, and the output end is free to move;

[0024] When the hydraulic system stops, the micro motor automatically reverses, and the groove ring is meshed and locked within 0.2 seconds, and the response speed is greatly improved compared with the traditional mechanical locking;

[0025] The rubber pad layer absorbs impact energy at the moment of locking, reduces meshing noise, and avoids micromotion wear caused by metal hard contact.

[0026] 3. Modular height adjustment and rapid adaptation:

[0027] The fixed structure adopts the plug-in design of the limiting groove and the locking block, and by replacing the locking blocks with different distances, the height adjustment of the telescopic rod can be completed within 30 seconds, and different stroke requirements can be adapted without disassembling the overall structure.

[0028] The symmetrical layout of the support strip and the cylinder body uniformly distributes the locking force, avoids deformation of the cylinder body caused by unilateral stress, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0030] Figure 1 The overall schematic diagram of a hydraulic cylinder with mechanical positioning and locking is shown;

[0031] Figure 2 The internal schematic diagram of a hydraulic cylinder with mechanical positioning and locking is shown. DETAILED DESCRIPTION

[0032] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined utility model purposes, the following will combine the drawings and the preferred embodiments to specifically describe the specific embodiments, structures, features and effects of the present application.

[0033] The reference signs in the drawings of the specification include: base plate 1, cylinder body 2, oil inlet 3, oil outlet 4, support strip 5, locking block 6, telescopic rod 7, micro motor 8, connecting frame 9, output end 10, clamping gear 11, connecting rod 12, clamping groove ring 13, connecting groove 1301, threaded rod 14.

[0034] A hydraulic cylinder with mechanical positioning and locking, the embodiments such as Figure 1 ,Figure 2 As shown: including the cylinder body 2 with the oil inlet 3 and the oil outlet 4 opened in the side wall, the output end 10 slidably connected with the cylinder body 2, and the bottom plate 1 for supporting the cylinder body 2.

[0035] It also includes the support strip 5 symmetrically mounted on both sides of the cylinder body 2 and above the bottom plate 1, the telescopic rod 7 vertically mounted in the support strip 5 and slidable out of the support strip 5, and the fixing structure for fixing the height of the telescopic rod 7, which includes the recess provided in the corresponding support strip 5, the limiting slot vertically arranged on the telescopic rod 7, and the locking block 6 which can be sequentially clamped into the limiting slot and the recess for fixation.

[0036] It also includes the locking structure for locking the output end 10 to prevent the deflection of the output end 10, which includes the clamping and gear 11 coaxially connected on the output end 10, the connecting frame 9 symmetrically fixedly mounted on the top of the corresponding telescopic rod 7 and with the other end fixedly connected on the top of the clamping and gear 11, and the clamping and groove ring 13 symmetrically slidably mounted on the connecting frame 9 and clamped and fixed with the clamping and gear 11, which is provided with the rubber pad layer, and the connecting frame 9 is also provided with the driving element for driving the clamping and groove ring 13 to slide. The driving element includes the micro motor 8 mounted on the side wall of the connecting frame 9 away from the output end 10 and electrically connected with the controller, the threaded rod 14 coaxially connected with the output shaft of the micro motor 8 and located in the guide groove, which is horizontally opened on the connecting frame 9 in the embodiment, the connecting rod 12 fixedly mounted on the top of the clamping and groove ring 13 and provided with the internal thread, the connecting rod 12 being slidable in the guide groove, the connecting rod 12 being threadedly connected with the threaded rod 14, and the connecting groove 1301 being opened on the clamping and groove ring 13 and clamped with the clamping and gear 11, and the clamping and groove rings 13 on both sides being spliced into the locking ring for fixing the direction of the output end 10.

[0037] The use process of the utility model is as follows:

[0038] The locking state: the micro motor 8 reversely drives the threaded rod 14, drives the clamping groove ring to slide to the center, splices the clamping groove rings on both sides into the locking ring and engages the clamping gear, and inhibits the rotation of the output end 10.

[0039] The unlocking state: the micro motor 8 rotates positively to separate the clamping groove ring, and the output end 10 can freely stretch and rotate.

[0040] The utility model has the following advantages:

[0041] 1. Anti-deflection and high-precision positioning:

[0042] The engagement design of the clamping gear and the groove ring inhibits the circumferential deflection of the output end 10, the positioning accuracy is improved by the annular constraint formed by the splicing of the groove rings on both sides, the rubber pad layer reduces the metal contact wear and prolongs the service life.

[0043] 2、Dual locking mechanism:

[0044] When hydraulic drive, the engagement groove ring is automatically separated, the output end 10 is free movement; stop oil supply, the drive member control groove ring meshing gear, form mechanical locking, avoid the position deviation caused by hydraulic leakage.

[0045] 3、Simplified structure and quick response:

[0046] Supporting strip 5 and telescopic rod 7 integrated design, no additional installation support, save space; Micro motor 8 drive screw rod 14 realize millisecond level locking response, adapt to high frequency start-stop conditions.

[0047] 4、Multi-scenario adaptability:

[0048] By adjusting the height of telescopic rod 7 and the position of locking block 6, adapt to different stroke requirements; can be extended to multiple groups of engagement groove ring array, meet the heavy load locking demand.

[0049] The above, only the preferred embodiment of the present application, not to the present application for any form of restrictions, although the present application has been disclosed as above with the preferred embodiment, however, not to limit the present application, any person skilled in the art, without departing from the scope of the present application technical scheme, can use the above disclosed technical content to make some more changes or modifications of equivalent examples, but whatever does not depart from the present application technical scheme content, according to the technical essence of the present application above the examples of any brief introduction modification, equivalent changes and modifications, still belong to the scope of the present application technical scheme.

Claims

1. A hydraulic cylinder with mechanical positioning locking, comprising a cylinder body with an oil inlet and an oil outlet on the side wall, and an output end in sliding connection with the cylinder body, characterized in that, The device comprises support strips symmetrically arranged on both sides of the cylinder, telescopic rods vertically slidingly connected to the support strips, and fixing structures for fixing the height of the telescopic rods, and locking structures for locking the output end to prevent the output end from deflecting, wherein the locking structures comprise clamps and gears coaxially connected to the output end, connecting frames symmetrically fixed to the top of the corresponding telescopic rods and having the other ends fixed to the top of the clamps and gears, clamp and groove rings symmetrically slidingly connected to the connecting frames and capable of being clamped and fixed with the clamps and gears, and driving members arranged on the connecting frames and capable of driving the clamp and groove rings to slide.

2. A hydraulic cylinder with mechanical positioning locking according to claim 1, characterized in that, The fixing structures comprise grooves arranged in the corresponding support strips, limiting grooves vertically arranged on the telescopic rods, and locking blocks capable of being clamped into the limiting grooves and the grooves in sequence.

3. The hydraulic cylinder with mechanical positioning locking according to claim 1, characterized in that, The connecting frames are provided with guide grooves, and the top of the clamp and groove ring is fixed with a connecting rod provided with internal threads.

4. A hydraulic cylinder with mechanical positioning locking according to claim 3, characterized in that, The driving members comprise micro motors arranged on the side walls of the connecting frames and electrically connected with controllers, threaded rods coaxially connected with the output shafts of the micro motors and located in the guide grooves, and the connecting rod is threadedly connected with the threaded rod.

5. A hydraulic cylinder with mechanical positioning locking according to claim 4, characterized in that, The clamp and groove ring is provided with a plurality of connecting grooves capable of being clamped with the clamps and gears, and the clamp and groove rings on both sides can be spliced into a locking ring for fixing the direction of the output end.

6. A hydraulic cylinder with mechanical positioning locking according to claim 1, characterized in that, The clamp and groove ring is provided with a rubber pad.

Images