Anti-loosening device for hydraulic cylinder guide sleeve

Abstract

The application relates to a loosening-preventing device suitable for a hydraulic cylinder guide sleeve, which comprises a cylinder barrel, a guide sleeve and a loosening-preventing mechanism, the guide sleeve is fixedly connected with the cylinder barrel into an integral whole through the loosening-preventing mechanism, the loosening-preventing mechanism comprises a clamping block, a clamping groove and a jackscrew, the longitudinal section of the clamping groove is a concave-shaped structure, the width of the opening of the clamping groove gradually decreases, a V-shaped groove matched with the long side part of the clamping block is formed, a threaded hole matched with the through hole in size is arranged on the V-shaped groove, the long side part of the clamping block is inserted into the V-shaped groove of the clamping groove, and the jackscrew passes through the threaded hole and the through hole in sequence to connect the clamping block and the clamping groove into an integral whole. The application has the advantages of ingenious design, simple structure, low processing difficulty, convenient and fast installation, reliable performance, effective solution to the loosening problem of the cylinder guide sleeve, convenient disassembly, no influence on the quality of the movable part after disassembly, improved loosening-preventing effect of the guide sleeve, improved production efficiency, good market prospect and development space for the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic oil cylinder, and particularly relates to a loosening prevention device suitable for a guide sleeve of a hydraulic oil cylinder. BACKGROUND

[0002] The guide sleeve of the oil cylinder is connected with the cylinder barrel in a threaded mode, and is frequently impacted and vibrated during the working process of the oil cylinder, so that the threads of the guide sleeve of the oil cylinder are frequently loosened, liquid leakage of the oil cylinder is caused, and a great safety hazard exists. The current loosening prevention method for the guide sleeve of the oil cylinder is a top screw structure, as shown in the accompanying drawings, the cylinder barrel and the guide sleeve are connected by two top screws in the circumferential direction, but there is a gap between the top screw and the bottom hole on the cylinder barrel, and the top screw is still loosened under impact and vibration, and even the top screw is broken, so that the loosening prevention effect has a hidden danger. Figure 1

[0003] There are the following methods for preventing the loosening of the guide sleeve of the oil cylinder on the market, one is that the guide sleeve and the cylinder barrel are prevented from loosening by taper surface cooperation, but the guide sleeve is difficult to be processed in this mode, and it is difficult to produce elastic deformation, and the loosening prevention effect is general; the other is an L-shaped loosening prevention block, a threaded counterbore is formed on the outer end surface of the guide sleeve, a vertical part of the L-shaped loosening prevention block is provided with a positioning hole, a positioning screw is inserted into the positioning hole of the L-shaped loosening prevention block, and the inner end of the positioning screw is connected with the threaded counterbore on the outer end surface of the guide sleeve in a threaded mode, the structure is connected with the cylinder barrel, and is spot welded with the outer circle of the cylinder barrel, the stress part of the loosening prevention structure is a plate and a thread in use, and the thread is still loosened under impact and vibration, and even the plate is twisted and deformed, and even broken, and the structure is fixed by welding, and is not easy to disassemble.

[0004] How to design a loosening prevention device suitable for the guide sleeve of the hydraulic oil cylinder, which is ingenious in design, simple in structure, low in processing difficulty, convenient and fast in installation, reliable in performance, effectively solves the loosening problem of the guide sleeve of the oil cylinder, is convenient to disassemble, has no influence on the quality of the movable part after disassembly, improves the loosening prevention effect of the guide sleeve, and improves the production efficiency is a problem to be solved at present. SUMMARY

[0005] In order to solve the technical problems that the existing guide sleeve of the oil cylinder is easy to be loosened and deformed, the loosening prevention effect is poor, liquid leakage of the oil cylinder is caused, the working condition reliability of the oil cylinder is seriously affected, and the production efficiency is affected, the loosening prevention device suitable for the guide sleeve of the hydraulic oil cylinder is provided to realize the purpose of ingenious design, simple structure, low processing difficulty, convenient and fast installation, reliable performance, effective solution to the loosening problem of the guide sleeve of the oil cylinder, convenient disassembly, no influence on the quality of the movable part after disassembly, improvement of the loosening prevention effect of the guide sleeve, and improvement of the production efficiency.

[0006] ​The technical scheme adopted by the present application to solve the above technical problems is: the anti-loosening device suitable for the guide sleeve of a hydraulic cylinder, comprising a cylinder barrel, a guide sleeve and an anti-loosening mechanism, a reserved groove is formed at the edge of the guide sleeve, the free part of the anti-loosening mechanism is clamped in the reserved groove, the fixed part of the anti-loosening mechanism is welded on the outer wall of the cylinder barrel, the guide sleeve is fixedly connected with the cylinder barrel into a whole through the anti-loosening mechanism, the anti-loosening mechanism comprises a clamping block, a clamping groove and a jackscrew, wherein the longitudinal section of the clamping block is an L-shaped block structure, the short side part of the L-shaped structure has a rectangular cross section, and the width of the short side part matches the width of the reserved groove, the long side part of the L-shaped structure has a V-shaped cross section with gradually decreasing width, and a through hole is formed in the long side; the longitudinal section of the clamping groove is a concave-shaped structure, the width of the opening of the clamping groove gradually decreases to form a V-shaped groove matching the long side part of the clamping block in size, a threaded hole matching the through hole in size is formed in the V-shaped groove, the long side part of the clamping block is inserted into the V-shaped groove of the clamping groove, and the jackscrew passes through the threaded hole and the through hole in sequence to connect the clamping block and the clamping groove into a whole.

[0007] As a further optimization scheme of the above anti-loosening device suitable for the guide sleeve of a hydraulic cylinder, the number of the reserved grooves is two to four.

[0008] As a further optimization scheme of the above anti-loosening device suitable for the guide sleeve of a hydraulic cylinder, the bottom of the clamping groove is fixed on the outer wall of the cylinder barrel by welding.

[0009] As a further optimization scheme of the above anti-loosening device suitable for the guide sleeve of a hydraulic cylinder, the outer edge of the clamping block and the clamping groove is chamfered.

[0010] Compared with the prior art, the present application has the following beneficial effects:

[0011] The present application comprises a cylinder barrel, a guide sleeve and an anti-loosening mechanism, a reserved groove is formed at the edge of the guide sleeve, the free part of the anti-loosening mechanism is clamped in the reserved groove, the fixed part of the anti-loosening mechanism is welded on the outer wall of the cylinder barrel, and the guide sleeve is fixedly connected with the cylinder barrel into a whole through the anti-loosening mechanism; the present application breaks the conventional structure, adopts a V-shaped clamping block and a clamping groove structure, and is fixed through a jackscrew, the outer edge is welded, the guide sleeve is fixedly connected with the cylinder barrel into a whole through the anti-loosening mechanism, the anti-loosening problem of the guide sleeve of the hydraulic cylinder is effectively solved, the subsequent disassembly is convenient, the disassembly has no influence on the quality of the movable part, and the anti-loosening effect of the guide sleeve is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic diagram of the jackscrew structure of the prior art;

[0013] Figure 2 is a longitudinal section schematic diagram of the anti-loosening device of the present application;

[0014] Figure 3 is a side view schematic diagram of the anti-loosening device of the present application;

[0015] Figure 4 is the anti-loosening mechanism combination perspective view;

[0016] Figure 5 is the guide sleeve circumferential direction milling reserved slot schematic diagram;

[0017] Figure 6 is the card block side view and top view schematic diagram;

[0018] Figure 7 is the card slot front view and top view schematic diagram;

[0019] Marked in the figure: cylinder 1; guide sleeve 2; card block 3; card slot 4; jack 5; reserved slot 6; through hole 7; threaded hole 8. DETAILED DESCRIPTION

[0020] The specific embodiments of the application are further described in detail below with reference to the accompanying drawings.

[0021] As shown in the figure, the anti-loosening device suitable for hydraulic cylinder guide sleeve, including cylinder 1, guide sleeve 2 and anti-loosening mechanism, the edge of the guide sleeve 2 is provided with reserved slot 6, the number of the reserved slot 6 is two to four; the free part of the anti-loosening mechanism is clamped in the reserved slot 6, the fixed part of the anti-loosening mechanism is welded on the outer wall of the cylinder 1, the guide sleeve 2 is fixedly connected with the cylinder 1 into a whole through the anti-loosening mechanism, the anti-loosening mechanism includes card block 3, card slot 4 and jack 5, wherein the card block 3 is L-shaped block structure in longitudinal section, the short side part of the L-shaped structure is rectangular in cross section, and the width of the short side part matches the width of the reserved slot 6, the long side part of the L-shaped structure is V-shaped in cross section with gradually decreasing width, and the through hole 7 is provided on the long side; the card slot 4 is concave-shaped structure in longitudinal section, the width of the card slot 4 at the opening gradually decreases to form a V-shaped slot matching the size of the long side part of the card block 3, the threaded hole 8 matching the size of the through hole 7 is provided on the V-shaped slot, the long side part of the card block 3 is inserted into the V-shaped slot of the card slot 4, and the jack 5 passes through the threaded hole 8 and the through hole 7 in sequence to connect the card block 3 and the card slot 4 into a whole; the bottom of the card slot 4 is fixed on the outer wall of the cylinder 1 by welding.

[0022] In actual operation, the anti-loosening mechanism includes card block 3 (L-shaped), card slot 4 (concave-shaped) and jack 5; the threaded hole 8 is provided on the flat surface of the card slot 4, the long side part of the card block 3 is V-shaped in cross section with gradually decreasing width, and the short side part is rectangular in cross section, the card slot 4 and the card block 3 are matched without gap through the V-shaped wedge surface, then positioned through the threaded hole 8 on the card slot 4, the through hole 7 is drilled on the card block 3, and the card block 3 and the card slot 4 are fixed through the jack 5 to form the anti-loosening mechanism.

[0023] A reserved groove 6 is processed in advance on the circumferential direction of the guide sleeve 2 as needed. The width of the reserved groove 6 is consistent with the square width of the short side of the clamping block 3, and the tolerance adopts a transition fit connection. The present invention connects the guide sleeve 2 and the cylinder 1 through this anti-loosening mechanism, and welds the outer end of the clamping groove 4 to the outer circle of the cylinder, thereby effectively preventing the guide sleeve 2 from loosening. When disassembling, it is only necessary to knock the clamping block 3 outward from the clamping groove 4. Disassembly has no effect on the quality of the workpiece, and is simple and effective.

[0024] Its advantages are mainly as follows:

[0025] 1. The anti-loosening mechanism maximizes the anti-loosening effect of the guide sleeve with minimal improvement, thereby improving the reliability of the cylinder working condition.

[0026] 2. This anti-loosening mechanism adds a V-shaped block 3, a slot 4 and a preset reserved slot on the basis of the existing cylinder top screw structure. It is processed using existing steel plate scraps. It has a simple structure, low cost, reliable performance, and is easy to process and install.

[0027] 3. This anti-loosening mechanism is easy to disassemble and has no effect on the quality of the working parts after disassembly.

[0028] The present invention has a clever design, a simple structure, low processing difficulty, easy and quick installation, reliable performance, and effectively solves the problem of anti-loosening of the cylinder guide sleeve. It is easy to disassemble subsequently, and has no effect on the quality of the living parts after disassembly. It improves the anti-loosening effect of the guide sleeve, improves production efficiency, and solves the technical problems of the existing cylinder guide sleeve that are easy to loosen and deform, have poor anti-loosening effect, cause cylinder leakage, seriously affect the reliability of the cylinder working condition, and affect production efficiency. Compared with the existing technology, it has good market prospects and development space.

[0029] The preferred specific implementation modes and embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes and embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the concept of the present invention.

Claims

1. An anti-loosening device for a guide sleeve of a hydraulic cylinder, comprising a cylinder barrel (1), a guide sleeve (2) and an anti-loosening mechanism, wherein a reserved groove (6) is provided on the edge of the guide sleeve (2), a free portion of the anti-loosening mechanism is engaged in the reserved groove (6), a fixed portion of the anti-loosening mechanism is welded to the outer wall of the cylinder barrel (1), and the guide sleeve (2) is fixedly connected to the cylinder barrel (1) through the anti-loosening mechanism to form a whole, characterized in that: The anti-loosening mechanism comprises a card block (3), a card slot (4) and a top screw (5), wherein the card block (3) has an L-shaped block structure in longitudinal section, the short side of the L-shaped structure has a rectangular cross section, and the width of the short side matches the width of the reserved slot (6), and the long side of the L-shaped structure has a V-shaped cross section with a gradually decreasing width, and a through hole (7) is provided on the long side; the card slot (4) has a concave structure in longitudinal section, the width of the card slot (4) at the opening gradually decreases to form a V-shaped groove matching the size of the long side of the card block (3), and a threaded hole (8) matching the size of the through hole (7) is provided on the V-shaped groove, the long side of the card block (3) is inserted into the V-shaped groove of the card slot (4), and the top screw (5) passes through the threaded hole (8) and the through hole (7) in sequence to connect the card block (3) and the card slot (4) into a whole; Both sides of the bottom of the slot (4) are fixed to the outer wall of the cylinder (1) by welding; The width of the reserved groove (6) is consistent with the square width of the short side of the block (3), and the tolerance adopts a transition fit connection.

2. The anti-loosening device for a hydraulic cylinder guide sleeve according to claim 1, characterized in that: The number of the reserved slots (6) is two to four.

3. The anti-loosening device for a hydraulic cylinder guide sleeve according to claim 1, characterized in that: The outer edges of the clamping block (3) and the clamping slot (4) are chamfered.

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