Single-rack swing oil cylinder

Abstract

The utility model relates to the technical field of swing oil cylinders, and discloses a single-rack swing oil cylinder which comprises a base, cylinder sleeves are detachably installed at the two ends of the base through bolts, end covers are detachably installed on the front face and the rear face of the base through bolts, a gear is arranged between the two end covers, and the gear is connected with the cylinder sleeves through bolts. The axis of the gear is fixedly provided with an output shaft, the bottom of the gear is meshed with a rack, and the rack is arranged in the cylinder sleeve. According to the single-rack swing oil cylinder, the pressing plate is pressed downwards, the spring A is compressed, the connecting plate moves downwards, the clamping block also moves downwards to be separated from the clamping groove, and first-step unlocking of the piston and the protruding block is achieved; then force is applied to the piston for side pulling, the positioning groove and the T-shaped positioning head extrude each other, the T-shaped positioning head retracts into the mounting groove, second-step unlocking of the piston and the protruding block is achieved, and the piston is detached in the process; on the contrary, a new piston can be installed on the protruding block, and therefore maintenance and replacement of the piston are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to swing oil cylinder technical field, concretely is a single rack swing oil cylinder. BACKGROUND

[0002] The swing oil cylinder is widely used in the automatic production line because of reliable action and simple structure. The existing swing oil cylinder is mainly a gear and rack swing oil cylinder, and the structure is to fix the rack between two pistons in the cylinder barrel, and the left and right displacement of the rack is realized by the power of the piston in the cylinder barrel, so that the rack drives the gear to swing left and right.

[0003] Whether the air tightness is stable is the premise of ensuring the operation of the swing oil cylinder, and the conventional oil cylinder is provided with an outer embedded end cover at both ends, which can easily cause poor air tightness at both ends of the oil cylinder. When impurities from the end cover penetrate into the cylinder sleeve, the piston is easily worn during movement in the cylinder sleeve, and then a wear gap is formed between the outer wall of the piston and the inner wall of the cylinder sleeve. At the same time, the piston and the rack are integrally arranged, and the piston wear requires the entire rack to be replaced, which can easily cause resource waste. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a single rack swing oil cylinder, which has the advantages of good air tightness and convenient replacement of the piston, and solves the above problems.

[0006] (II) Technical scheme

[0007] In order to achieve the purpose of good air tightness and convenient replacement of the piston, the utility model provides the following technical scheme: a single rack swing oil cylinder, comprising a base, the both ends of the base are detachably installed with a cylinder sleeve through bolts, the front and back surfaces of the base are detachably installed with end covers through bolts, a gear is arranged between the two end covers, the shaft center of the gear is fixedly installed with an output shaft, the bottom of the gear is engaged with a rack, the rack is arranged in the inside of the cylinder sleeve, the both ends of the rack are fixedly installed with protrusions, the outer side of the protrusion is detachably installed with a piston, the inner wall of the cylinder sleeve is fixedly installed with a fixed ring, the tail of the cylinder sleeve is embedded with a side cover, the center of the side cover is embedded with a connecting nozzle, and the side cover is detachably installed with the fixed ring through bolts.

[0008] Preferably, the inner wall of the base is fixedly installed with a sliding bar, the bottom of the rack is provided with a sliding groove, and the rack is slidingly connected in the cylinder sleeve and the base through the sliding bar and the sliding groove.

[0009] Preferably, the top of the protruding block is provided with an inner cavity, the inner cavity is provided with a spring A, the top of the spring A is fixedly provided with a connecting plate, one end of the connecting plate is fixedly provided with a pressing plate, the other end of the connecting plate is fixedly provided with a clamping block, and the inner wall of the piston is provided with a clamping groove corresponding to the clamping block.

[0010] Preferably, the cross section of the pressing plate is L-shaped, the long arm end of the pressing plate penetrates into the inner cavity, the cross section of the clamping block and the clamping groove is trapezoidal, and the piston is detachably connected with the protruding block through the clamping block and the clamping groove.

[0011] Preferably, the two side walls of the protruding block are provided with mounting grooves, the mounting grooves are fixedly provided with limiting rings at openings, the inner part of the limiting ring is penetrated by a T-shaped positioning head, the side surface of the T-shaped positioning head is fixedly provided with a spring B, and the side wall of the piston is provided with a positioning groove corresponding to the T-shaped positioning head.

[0012] Preferably, the cross section of the T-shaped positioning head inserted into one end of the positioning groove is semicircular, and the piston is detachably connected with the protruding block through the T-shaped positioning head and the positioning groove.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the utility model provides a single rack swing oil cylinder, has the following beneficial effects:

[0015] 1、The single rack swing oil cylinder, the fixed ring is arranged at the end of the cylinder sleeve, the side cover is detachably installed between the fixed ring and the bolt, and the sealing ring is arranged between the side cover and the fixed ring, the side cover is arranged in the inner sink, the outer appearance is not only beautiful, but also the sealing property is high, and the gas permeation or liquid leakage is reduced.

[0016] 2、The single rack swing oil cylinder, the spring A is compressed by the pressing plate, the connecting plate is moved downward, the clamping block is also moved downward and separated from the clamping groove, the first step of unlocking of the piston and the protruding block is realized, then the positioning groove and the T-shaped positioning head are pressed, the T-shaped positioning head is arranged in the mounting groove, the second step of unlocking of the piston and the protruding block is realized, and the piston is detached in the process, and vice versa, so that the new piston is installed on the protruding block, and the maintenance and replacement of the piston are realized. ACCURACY

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a cut structure schematic view of the utility model;

[0019] Figure 3 It is a disassembly structure schematic view of the utility model;

[0020] Figure 4 It is the exploded structural schematic view of rack, convex block and piston of the utility model;

[0021] Figure 5 It is the exploded structural schematic view of connecting plate and T-shaped positioning head of the utility model;

[0022] Figure 6 It is the exploded structural schematic view of spring B, T-shaped positioning head and convex block of the utility model.

[0023] In the drawing: 1, base; 2, end cover; 3, gear; 4, output shaft; 5, rack; 6, convex block; 7, piston; 8, cylinder sleeve; 9, fixed ring; 10, side cover; 11, connecting mouth; 12, sliding bar; 13, sliding groove; 61, inner cavity; 62, spring A; 63, connecting plate; 64, pressing plate; 65, clamping block; 66, clamping groove; 67, mounting groove; 68, limiting ring; 69, T-shaped positioning head; 610, spring B; 611, positioning groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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.

[0025] Please refer to Figures 1-3 A single rack swing oil cylinder, including base 1, the both ends of base 1 are detachably installed with cylinder sleeve 8 through bolt, the front and rear surfaces of base 1 are detachably installed with end cover 2 through bolt, the gear 3 is arranged between the two end covers 2, the shaft center of gear 3 is fixedly installed with output shaft 4, the bottom of gear 3 is engaged with rack 5, rack 5 is arranged in the inside of cylinder sleeve 8, the both ends of rack 5 are fixedly installed with convex block 6, the outside of convex block 6 is detachably installed with piston 7, two pistons 7 are slid back and forth in cylinder sleeve 8 under external force, then rack 5 moves back and forth, rack 5 drives gear 3 to rotate reciprocatingly, and power is finally output from output shaft 4.

[0026] Please refer to Figures 2-3 The inner wall of cylinder sleeve 8 is fixedly installed with fixed ring 9, the tail of cylinder sleeve 8 is embedded with side cover 10, the center of side cover 10 is embedded with connecting mouth 11, and side cover 10 is detachably installed with fixed ring 9 through bolt. A sealing ring is arranged between side cover 10 and fixed ring 9, and the end of side cover 10 is sunkly arranged in cylinder sleeve 8, so that the appearance of cylinder sleeve 8 is ensured, and the sealing property is improved.

[0027] Please refer to Figures 2-3The inner wall of the base 1 is fixedly provided with a sliding strip 12, the bottom of the rack 5 is provided with a sliding groove 13, and the rack 5 is slidably connected in the cylinder sleeve 8 and the base 1 through the sliding strip 12 and the sliding groove 13. The rack 5 can be kept stable in sliding and will not be deflected.

[0028] Please refer to Figures 4-5 The top of the convex block 6 is provided with an inner cavity 61, the inner cavity 61 is internally provided with a spring A 62, the top of the spring A 62 is fixedly provided with a connecting plate 63, one end of the connecting plate 63 is fixedly provided with a pressing plate 64, the pressing plate 64 is in L-shaped cross section, the long arm end of the pressing plate 64 penetrates into the inner cavity 61, the other end of the connecting plate 63 is fixedly provided with a clamping block 65, the inner wall of the piston 7 is provided with a clamping groove 66 corresponding to the clamping block 65, the clamping block 65 and the clamping groove 66 are in trapezoidal cross section, and the piston 7 is detachably connected with the convex block 6 through the clamping block 65 and the clamping groove 66. When the pressing plate 64 is pressed, the clamping block 65 and the clamping groove 66 are separated; when the pressing plate 64 is released, the spring A 62 pushes the clamping block 65 to insert into the clamping groove 66.

[0029] Please refer to Figures 5-6 Both side walls of the convex block 6 are provided with mounting grooves 67, the mounting grooves 67 are fixedly provided with limiting rings 68 at openings, the limiting rings 68 are internally penetrated by T-shaped positioning heads 69, the side surface of the T-shaped positioning head 69 is fixedly provided with a spring B 610, and the side wall of the piston 7 is provided with a positioning groove 611 corresponding to the T-shaped positioning head 69. The cross section of the T-shaped positioning head 69 inserted into one end of the positioning groove 611 is semicircular, and the piston 7 is detachably connected with the convex block 6 through the T-shaped positioning head 69 and the positioning groove 611.

[0030] Working principle: in use, the connecting mouth 11 is connected with an external conveying pump, liquid or gas enters the cylinder sleeve 8, then drives the rack 5 to move left and right, the rack 5 drives the gear 3 to reciprocating rotate, and the output of power is realized.

[0031] The end of the cylinder sleeve 8 is provided with an upper fixed ring 9, the side cover 10 is detachably installed between the upper fixed ring 9 and the side cover 10 through bolts, and a sealing ring is arranged between the side cover 10 and the upper fixed ring 9. The side cover 10 of the application is internally sunk, which is not only beautiful in appearance, but also high in sealing performance, and reduces gas penetration or liquid leakage.

[0032] When the pressing plate 64 is pressed, the spring A 62 is compressed, the connecting plate 63 moves downward, the clamping block 65 also moves downward and separates from the clamping groove 66, and the first step of unlocking of the piston 7 and the convex block 6 is realized; then the piston 7 is forced to be laterally pulled, the positioning groove 611 and the T-shaped positioning head 69 are in mutual extrusion, the T-shaped positioning head 69 is shrunk into the mounting groove 67, the second step of unlocking of the piston 7 and the convex block 6 is realized, and the piston 7 is detached in this process.

[0033] Conversely, the new piston 7 can be installed on the protrusion 6, the spring B610 pushes the T-shaped positioning head 69 into the positioning groove 611 to achieve preliminary locking, then the pressing plate 64 is loosened, the spring A62 pushes the clamping block 65 into the clamping groove 66 to achieve locking again, thereby achieving the maintenance and replacement installation of the piston 7.

[0034] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A single rack swing oil cylinder, comprising a base (1), both ends of the base (1) are detachably installed with a cylinder sleeve (8) through bolts, both front and back surfaces of the base (1) are detachably installed with end covers (2) through bolts, a gear (3) is arranged between the two end covers (2), an output shaft (4) is fixedly installed at the axis center of the gear (3), a rack (5) is engaged at the bottom of the gear (3), the rack (5) is arranged inside the cylinder sleeve (8), both ends of the rack (5) are fixedly installed with protrusions (6), and the outer side of the protrusions (6) is detachably installed with a piston (7), characterized in that: The inner wall of the cylinder sleeve (8) is fixedly installed with a fixed ring (9), the tail of the cylinder sleeve (8) is embedded with a side cover (10), the center of the side cover (10) is embedded with a connecting nozzle (11), and the side cover (10) is detachably installed with the fixed ring (9) through bolts.

2. A single rack oscillating ram as defined in claim 1, wherein: The inner wall of the base (1) is fixedly installed with a sliding strip (12), the bottom of the rack (5) is provided with a sliding groove (13), and the rack (5) is slidably connected in the cylinder sleeve (8) and the base (1) through the sliding strip (12) and the sliding groove (13).

3. A single rack oscillating ram as defined in claim 1, wherein: The top of the protruding block (6) is provided with an inner cavity (61), the inner cavity (61) is provided with a spring A (62) inside, the top of the spring A (62) is fixedly installed with a connecting plate (63), one end of the connecting plate (63) is fixedly installed with a pressing plate (64), the other end of the connecting plate (63) is fixedly installed with a clamping block (65), and the inner wall of the piston (7) is provided with a clamping groove (66) corresponding to the clamping block (65).

4. A single rack oscillating ram as defined in claim 3, wherein: The cross section of the pressing plate (64) is L-shaped, the long arm end of the pressing plate (64) penetrates into the inner cavity (61), the cross section of the clamping block (65) and the clamping groove (66) is trapezoidal, and the piston (7) is detachably connected with the protruding block (6) through the clamping block (65) and the clamping groove (66).

5. A single rack oscillating ram as defined in claim 1, wherein: The two side walls of the protruding block (6) are provided with mounting grooves (67), the mounting grooves (67) are fixedly installed with limiting rings (68) at the openings, the limiting rings (68) are inserted with T-shaped positioning heads (69) inside, the side surfaces of the T-shaped positioning heads (69) are fixedly installed with spring B (610), and the side wall of the piston (7) is provided with a positioning groove (611) corresponding to the T-shaped positioning head (69).

6. A single rack oscillating ram as defined in claim 5, wherein: The cross section of the T-shaped positioning head (69) inserted into one end of the positioning groove (611) is semicircular, and the piston (7) is detachably connected with the protruding block (6) through the T-shaped positioning head (69) and the positioning groove (611).

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