Piston rod anti-rotation air cylinder

Abstract

The piston is slidably connected into the cylinder body, the piston rod is fixed at the outer end of the piston, the tail end of the piston rod extends out of the cylinder body, a guide groove is formed in the surface of the piston rod, an annular boss is fixed at the upper end of the cylinder body and located on the outer side of the piston rod, and a threaded groove is formed in the front end of the annular boss. The connecting sleeve is arranged on the annular boss in a sleeving mode to be clamped, the first lower screw hole corresponds to the threaded groove, the first upper screw hole corresponds to the guide groove, then the reinforcing sleeve is arranged outside the connecting sleeve in a sleeving mode, the first upper screw hole corresponds to the second upper screw hole, the first lower screw hole corresponds to the second lower screw hole, and then a long bolt is screwed into the second upper screw hole and the first upper screw hole and enters the guide groove. The short bolt is screwed into the second lower screw hole and the first lower screw hole and enters the threaded groove, and the portion, located in the guide groove, of the rear end of the long bolt is a smooth portion, so that the long bolt slides in the guide groove to achieve the anti-rotation guide function of the piston rod, the length of the whole air cylinder is shortened, the application range is widened, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a piston rod anti-rotation cylinder. Background Art

[0002] The structure of a cylinder includes a cylinder body and a piston, with a piston rod connected to the piston and extending out of the cylinder body. In most usage scenarios of the cylinder, there is no requirement for the piston rod to rotate relative to the cylinder body. However, in some special usage scenarios, in addition to transmitting power through the piston rod, the cylinder is also required not to have relative circumferential rotation during movement. For this purpose, a piston rod anti-rotation cylinder is designed.

[0003] The current piston rod anti-rotation cylinder is equipped with a connector and a sleeve, and a guide pin is provided on the sleeve to guide the piston rod to prevent rotation. This causes the problem of a long length of the entire cylinder. When the use space is limited, the long length will affect the practicality. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a piston rod anti-rotation cylinder to solve the problems existing in the above-mentioned background technology.

[0005] The piston rod anti-rotation cylinder comprises a cylinder body, a piston slidably connected therein and a piston rod fixed at the outer end of the piston, the piston rod end extending out of the cylinder body, the piston rod surface is provided with a guide groove, the upper end of the cylinder body and an annular boss is fixed at the outer end of the piston rod, the front end of the annular boss is provided with a threaded groove, the outer sleeve of the annular boss is provided with an upper screw hole one and a lower screw hole one at the upper and lower sides of the front end of the connecting sleeve, the outer sleeve of the connecting sleeve is provided with a reinforcement sleeve, the upper and lower sides of the front end of the reinforcement sleeve are respectively provided with an upper screw hole two and a lower screw hole two, the front end of the reinforcement sleeve is fitted with a fixing plate, the upper and lower sides of the fixing plate are respectively rotatably connected with a long bolt and a short bolt, the rear end of the long bolt is threadedly connected with the upper screw hole two and the upper screw hole one in turn, the rear end of the long bolt extends into the guide groove and is slidably connected to the guide groove, the rear end of the short bolt is threadedly connected with the lower screw hole two and the lower screw hole one in turn, and the rear end of the short bolt is threadedly connected with the threaded groove.

[0006] Furthermore, grooves are formed at both ends of the annular boss, a card bead is provided inside the groove, a spring is connected between the card bead and the bottom of the groove, and clamping holes are formed at both ends of the connecting sleeve, and the card bead is plugged into the clamping hole.

[0007] Furthermore, side grooves are provided at both left and right ends of the inner side of the reinforcement sleeve, and the clamping beads are slidably connected to the side grooves in a one-to-one correspondence.

[0008] Furthermore, rotating holes are provided on the upper and lower sides of the front end of the fixing plate, and a circle of annular grooves are provided on the inner walls of the rotating holes. The long bolts and short bolts are respectively located inside the upper and lower rotating holes, and convex rings are fixed in front of the outer walls of the long bolts and short bolts. The convex rings are located inside the annular grooves and are movably connected to the annular grooves.

[0009] Furthermore, gears are fixed to the front ends of the long bolts and the short bolts, and the gears are meshed and connected with each other.

[0010] Furthermore, the front ends of the gears are all provided with hexagonal grooves.

[0011] Beneficial effect: The piston rod anti-rotation cylinder is achieved by clamping the connecting sleeve on the annular boss, and making the lower screw hole one correspond to the thread groove, and the upper screw hole one correspond to the guide groove, and then the reinforcing sleeve is arranged on the outside of the connecting sleeve and making the upper screw hole one correspond to the upper screw hole two, and the lower screw hole one correspond to the lower screw hole two, and then the long bolt is rotated into the upper screw hole two and the upper screw hole one and enters the guide groove together, and the short bolt is rotated into the lower screw hole two and the lower screw hole and enters the thread groove together, and the rear end of the long bolt is located in the guide groove The part is a smooth part, so that the sliding of the long bolt and the guide groove can play an anti-rotation guiding role of the piston rod, and shorten the length of the entire cylinder, increase the applicable scenarios, and improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of the utility model;

[0013] Figure 2 This is a partial schematic diagram of the utility model being disassembled as a whole;

[0014] Figure 3 This is a schematic diagram of the fixing plate of the utility model;

[0015] Figure 4 It is a top view cross-sectional schematic diagram of the annular boss of the utility model.

[0016] In the figure: 1-cylinder body, 2-piston rod, 3-connecting sleeve, 4-reinforcement sleeve, 5-guide groove, 6-long bolt, 7-fixing plate, 8-annular boss, 9-card bead, 10-thread groove, 11-card hole, 12-upper screw hole one, 13-lower screw hole one, 14-upper screw hole two, 15-lower screw hole two, 16-side groove, 17-short bolt, 18-gear, 19-hexagonal groove, 20-rotating hole, 21-annular groove, 22-convex ring, 23-spring, 24-groove. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 4, a piston rod anti-rotation cylinder comprises a cylinder body 1, a piston slidably connected therein and a piston rod 2 fixed at the outer end of the piston, the end of the piston rod 2 extends out of the cylinder body 1, a guide groove 5 is provided on the surface of the piston rod 2, an annular boss 8 is fixed on the upper end of the cylinder body 1 and located outside the piston rod 2, a threaded groove 10 is provided at the front end of the annular boss 8, a connecting sleeve 3 is provided on the outside of the annular boss 8, grooves 24 are provided at both ends of the annular boss 8, a card bead 9 is provided inside the groove 24, a spring 23 is connected between the card bead 9 and the bottom of the groove 24, and the connecting sleeve 3 There are clamping holes 11 on both the left and right ends, and the clamping beads 9 are plugged into the clamping holes 11. The upper and lower sides of the front end of the connecting sleeve 3 are respectively provided with an upper screw hole 12 and a lower screw hole 13. The connecting sleeve 3 is set on the outside of the annular boss 8. At this time, the clamping beads 9 are squeezed by the inner wall of the connecting sleeve 3, and the clamping beads 9 move into the groove 24 and squeeze the spring 23. After aligning the clamping beads 9 and the clamping holes 11, the spring 23 can bounce the clamping beads 9 and insert them into the clamping holes 11. In this way, the clamping connection between the connecting sleeve 3 and the annular boss 8 can be completed. At this time, the upper screw hole 12 corresponds to the guide groove 5, and the lower screw hole 13 corresponds to the threaded groove 10.

[0018] The connecting sleeve 3 is externally sleeved with a reinforcing sleeve 4, and side grooves 16 are provided at both left and right ends of the inner side of the reinforcing sleeve 4. The clamping beads 9 are slidably connected with the side grooves 16 in a one-to-one correspondence. An upper screw hole 2 14 and a lower screw hole 2 15 are respectively provided on the upper and lower sides of the front end of the reinforcing sleeve 4. After the connecting sleeve 3 is installed, the reinforcing sleeve 4 can be sleeved on the outside of the connecting sleeve 3 by sliding the clamping beads 9 and the side grooves 16 in correspondence, and making the upper screw hole 2 14 correspond to the upper screw hole 1 12, and the lower screw hole 2 15 correspond to the lower screw hole 1 13.

[0019] The front end of the reinforcement sleeve 4 is fitted with a fixing plate 7, and the upper and lower sides of the fixing plate 7 are rotatably connected with a long bolt 6 and a short bolt 17 respectively. The upper and lower sides of the front end of the fixing plate 7 are provided with a rotating hole 20, and the inner wall of the rotating hole 20 is provided with a circle of annular groove 21. The long bolt 6 and the short bolt 17 are respectively located in the upper and lower rotating holes 20, and the front of the outer wall of the long bolt 6 and the short bolt 17 are fixed with a convex ring 22, and the convex ring 22 is located in the annular groove 21 and is movably connected to the annular groove 21. The rear part of the long bolt 6 is threadedly connected with the upper screw hole 2 14 and the upper screw hole 1 12 in sequence, and the rear part of the long bolt 6 extends into the guide groove 5 and is slidably connected to the guide groove 5. The rear part of the short bolt 17 is threadedly connected with the lower screw hole 2 15 and the lower screw hole 13 in sequence, and the rear part of the short bolt 17 is threadedly connected with the thread groove 10. After the reinforcement sleeve 4 is installed, the long bolt 6 can be aligned with the upper screw hole 2 14 and rotated in, and then the long bolt 6 When rotated to a certain distance, the short bolt 17 can be aligned with the lower screw hole 15 and rotated in, and then the long bolt 6 can be rotated into the upper screw hole 14 and the upper screw hole 12 and enter the guide groove 5, while the short bolt 17 is rotated into the lower screw hole 15 and the lower screw hole 13 and enter the threaded groove 10. The rear end of the long bolt 6 is located in the guide groove 5 and is a smooth part. In this way, the sliding of the long bolt 6 and the guide groove 5 can play an anti-rotation guiding role of the piston rod 2, and shorten the length of the entire cylinder, increase the applicable scenarios, and improve practicality. The short bolt 17 is located inside the threaded groove 10 to fix the connecting sleeve 3, the reinforcement sleeve 4, the annular boss 8 and the fixing plate 7 to prevent the connecting sleeve 3, the reinforcement sleeve 4 and the fixing plate 7 from falling off. When the long bolt 6 and the short bolt 17 are rotated, the convex ring 22 will be driven to move inside the annular groove 21. The setting of the convex ring 22 and the annular groove 21 prevents the long bolt 6 and the short bolt 17 from moving out of the rotating hole 20.

[0020] Gears 18 are fixed to the front ends of the long bolt 6 and the short bolt 17, and the gears 18 are meshed with each other. When the long bolt 6 is rotated, it is only necessary to rotate the gear 18 of the long bolt 6. In this way, the two gears 18 are meshed with each other and rotate at the same time. In this way, the gear 18 on the lower side will drive the short bolt 17 to rotate, so that the long bolt 6 and the short bolt 17 rotate at the same time, but in opposite directions.

[0021] The front end of the gear 18 is provided with a hexagonal groove 19. When the gear 18 needs to be rotated, a hexagonal wrench needs to be inserted into the hexagonal groove 19 of the gear 18, so that the gear 18 can be rotated more conveniently.

[0022] Working principle: The connecting sleeve 3 is set on the outside of the annular boss 8. At this time, the card bead 9 is squeezed by the inner wall of the connecting sleeve 3, and the card bead 9 moves into the groove 24 and squeezes the spring 23. After aligning the card bead 9 and the card hole 11, the spring 23 can bounce the card bead 9 and insert it into the card hole 11, completing the card connection between the connecting sleeve 3 and the annular boss 8. At this time, the upper screw hole 12 just corresponds to the guide groove 5, and the lower screw hole 13 just corresponds to the thread groove 10. Then the reinforcement sleeve 4 is set on the outside of the connecting sleeve 3, and the card bead 9 is slid into the corresponding side groove 16, and the upper screw hole 2 14 is made to correspond to the upper screw hole 12, and the lower screw hole 2 15 is made to correspond to the lower screw hole 13. Then, a hexagonal wrench is inserted into the hexagonal groove 19 of the upper gear 18 and rotated. The gear 18 is driven by the two gears 18 to mesh with each other and rotate at the same time. The gear 18 on the lower side will drive the short bolt 17 to rotate, so that the long bolt 6 and the short bolt 17 rotate at the same time. In this way, the long bolt 6 is aligned with the upper screw hole 14 and rotated in. Then, when the long bolt 6 rotates to a certain distance, the short bolt 17 can be aligned with the lower screw hole 15 and rotated in. Then, the long bolt 6 can be rotated into the upper screw hole 14 and the upper screw hole 12 and enter the guide groove 5, while the short bolt 17 is rotated into the lower screw hole 15 and the lower screw hole 13 and enter the thread groove 10. In this way, the sliding of the long bolt 6 and the guide groove 5 can play an anti-rotation guiding role of the piston rod 2, and shorten the length of the entire cylinder, increase the applicable scenarios, and improve practicality.

Claims

1. A piston rod anti-rotation cylinder, comprising a cylinder body (1), a piston slidably connected therein, and a piston rod (2) fixed to the outer end of the piston, wherein the end of the piston rod (2) extends out of the cylinder body (1), and a guide groove (5) is provided on the surface of the piston rod (2), characterized in that: An annular boss (8) is fixed at the upper end of the cylinder body (1) and located outside the piston rod (2); a threaded groove (10) is formed at the front end of the annular boss (8); a connecting sleeve (3) is sleeved on the outside of the annular boss (8); an upper screw hole (12) and a lower screw hole (13) are formed on the upper and lower sides of the front end of the connecting sleeve (3); a reinforcing sleeve (4) is sleeved on the outside of the connecting sleeve (3); an upper screw hole (14) and a lower screw hole (15) are formed on the upper and lower sides of the front end of the reinforcing sleeve (4); and the front end of the reinforcing sleeve (4) is provided with a plurality of threaded holes (14) and a plurality of threaded holes (15). A fixing plate (7) is fitted thereon, and a long bolt (6) and a short bolt (17) are rotatably connected to the upper and lower sides of the fixing plate (7), respectively. The rear portion of the long bolt (6) is threadedly connected to the upper screw hole 2 (14) and the upper screw hole 1 (12) in sequence, and the rear portion of the long bolt (6) extends into the guide groove (5) and is slidably connected to the guide groove (5), and the rear portion of the short bolt (17) is threadedly connected to the lower screw hole 2 (15) and the lower screw hole 1 (13) in sequence, and the rear portion of the short bolt (17) is threadedly connected to the thread groove (10).

2. The piston rod anti-rotation cylinder according to claim 1, characterized in that: The left and right ends of the annular boss (8) are provided with grooves (24), a clamping bead (9) is provided inside the groove (24), a spring (23) is connected between the clamping bead (9) and the bottom of the groove (24), and the left and right ends of the connecting sleeve (3) are provided with clamping holes (11), and the clamping bead (9) is plugged into the clamping hole (11).

3. The piston rod anti-rotation cylinder according to claim 2, characterized in that: The left and right ends of the inner side of the reinforcement sleeve (4) are both provided with side grooves (16), and the clamping beads (9) are slidably connected with the side grooves (16) in a one-to-one correspondence.

4. The piston rod anti-rotation cylinder according to claim 1, characterized in that: The front end of the fixing plate (7) is provided with a rotation hole (20) on both the upper and lower sides, and the inner wall of the rotation hole (20) is provided with a circle of annular grooves (21). The long bolt (6) and the short bolt (17) are respectively located inside the upper and lower rotation holes (20), and the front of the outer wall of the long bolt (6) and the short bolt (17) is fixed with a convex ring (22), and the convex ring (22) is located inside the annular groove (21) and is movably connected to the annular groove (21).

5. The piston rod anti-rotation cylinder according to claim 1, characterized in that: Gears (18) are fixed to the front ends of the long bolts (6) and the short bolts (17), and the gears (18) are meshed and connected with each other.

6. The piston rod anti-rotation cylinder according to claim 5, characterized in that: The front ends of the gears (18) are each provided with a hexagonal groove (19).

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