Rotation stopping air cylinder

Abstract

The utility model discloses an anti-rotation air cylinder which comprises a cylinder barrel, a front cover, a rear cover and a piston rod, the front cover and the rear cover are inserted into the two ends of the cylinder barrel respectively, the piston rod slides in the cylinder barrel, one end of the piston rod is connected into the front cover in a penetrating mode, and the other end of the piston rod is connected into the rear cover in a penetrating mode. A plurality of first locking pieces are evenly arranged on the circumferential side of the end, close to the rear cover, of the cylinder barrel in the circumferential direction, each first locking piece comprises a driving wheel, a pressing block and a driving rod, the driving wheels are rotationally connected into the side wall of the cylinder barrel, one ends of the pressing blocks are arranged on the side walls of the driving wheels, and the other ends of the pressing blocks are arranged on the side walls of the driving wheels. Locking grooves are evenly formed in the circumferential side of the rear cover in the circumferential direction, the other ends of the pressing blocks are fixed into the locking grooves, and one end of the driving rod is arranged on the side wall of the driving wheel. The air cylinder dismounting device has the effect of improving the air cylinder dismounting efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air cylinders, in particular to a rotation-stopping air cylinder. BACKGROUND

[0002] The air cylinder comprises a cylinder barrel, a front cover, a rear cover, a piston rod and a sealing element, the front cover and the rear cover are respectively fixed at two ends of the cylinder barrel through threads, the piston rod is inserted and slid in the cylinder barrel, the sealing element comprises a dynamic sealing and a static sealing, and the dynamic sealing is located between the piston rod and the cylinder barrel; when the air cylinder works for a long time, the dynamic sealing on the piston rod will age, and then the front cover or the rear cover needs to be disassembled, however, the front cover and the rear cover are respectively installed in the two ends of the cylinder barrel through threads, which is very inconvenient to disassemble, and the threads between the front cover and the cylinder barrel and the rear cover and the cylinder barrel will be rusted, so that the disassembly efficiency of the air cylinder is low. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the defects and deficiencies of prior art, provides a rotation-stopping air cylinder.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model discloses a cylinder barrel, a front cover, a rear cover and a piston rod, the front cover and the rear cover are respectively inserted in the both ends of the cylinder barrel, the piston rod slides in the cylinder barrel, one end of the piston rod is connected in the front cover, a plurality of first locking pieces are uniformly arranged on the circumferential side of the cylinder barrel near one end of the rear cover, the first locking piece comprises a driving wheel, a pressing block and a driving rod, the driving wheel is rotatably connected in the side wall of the cylinder barrel, one end of the pressing block is arranged in the side wall of the driving wheel, a plurality of locking grooves are uniformly arranged on the circumferential side of the rear cover, the other end of the pressing block is fixed in the locking groove, and one end of the driving rod is arranged in the side wall of the driving wheel.

[0006] Preferably, a plurality of second locking pieces are uniformly arranged on the circumferential side between the front cover and the cylinder barrel, the second locking piece comprises a locking hook and a locking hole, one end of the locking hook is arranged on the circumferential side of the front cover, the locking hole is arranged on the circumferential side of the cylinder barrel, and the other end of the locking hook is clamped and fixed in the locking hole.

[0007] Preferably, a plurality of connecting sliding grooves are uniformly arranged on the inner circumferential side of the cylinder barrel near the front cover, and the connecting sliding groove connects the locking hole and the outer end surface of the cylinder barrel.

[0008] Preferably, one end of the piston rod is provided with a rotation-stopping rod, the cross section of the rotation-stopping rod is polygonal, and the rotation-stopping rod is inserted and slid in the rear cover.

[0009] Preferably, the side wall of the cylinder is uniformly provided with a plurality of placing grooves for embedding the driving rod.

[0010] Preferably, the side wall of the placing groove is provided with a clamping block, and the side wall of the driving rod is provided with a clamping groove for clamping and fixing the clamping block.

[0011] Preferably, the circumferential side of the inner end of the front cover is sleeved with a first sealing ring, and the circumferential side of the inner end of the rear cover is sleeved with a second sealing ring.

[0012] To sum up, the present application has at least one of the following beneficial technical effects:

[0013] 1. When the dynamic seal needs to be replaced after the cylinder is used for a long time, one end of the locking hook is pushed out of the locking hole, then the one end of the locking hook slides out along the connecting sliding groove, then the front cover can be disassembled and taken out from one end of the cylinder, the driving rod can be actuated to rotate the driving wheel, then the compression block rotates out of the locking groove, then the rear cover can be disassembled and taken out from the other end of the cylinder, then the piston rod can be disassembled and taken out from the cylinder, then the dynamic seal is disassembled from the circumferential side of the piston rod and a new dynamic seal is sleeved on the circumferential side of the piston rod, the piston rod is inserted and mounted in the cylinder, finally the front cover and the rear cover are respectively inserted and fixed at both ends of the cylinder, at this time the cylinder can work normally, and the disassembly efficiency of the cylinder is improved.

[0014] 2. When the piston rod slides in the cylinder, the rotation stop rod can slide in the rear cover, because the cross section of the rotation stop rod is polygonal, the piston rod will not rotate, but only slide left and right in the cylinder, and the wear rate of the dynamic seal on the piston rod can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a sectional view of the cylinder of the utility model;

[0016] Figure 2 is Figure 1 is an enlarged view of A in

[0017] Figure 3 is Figure 1 is an enlarged view of B in

[0018] In the drawing: 1, cylinder; 2, front cover; 3, rear cover; 4, piston rod; 5, piston; 6, rotation stop rod; 7, connecting rod; 8, first locking part; 9, driving wheel; 10, compression block; 11, driving rod; 12, rotating groove; 13, locking groove; 14, placing groove; 15, clamping block; 16, clamping groove; 17, second locking part; 18, locking hook; 19, locking hole; 20, connecting sliding groove; 21, first sealing ring; 22, second sealing ring; 23, front buffer pad; 24, rear buffer pad; 25, placing groove. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings.

[0020] The utility model discloses a rotation stopping air cylinder.

[0021] With reference to Figure 1 , including cylinder 1, front cover 2, rear cover 3 and piston rod 4, piston rod 4 includes piston 5, rotation stopping rod 6 and connecting rod 7, one end of rotation stopping rod 6 is integrally arranged at one end of connecting rod 7, and piston 5 is sleeved and fixed to the circumferential side between rotation stopping rod 6 and connecting rod 7, one end of front cover 2 and rear cover 3 is respectively inserted and fixed in the two ends of cylinder 1, and connecting rod 7 and rotation stopping rod 6 are respectively inserted and slid in front cover 2 and rear cover 3, and the inner end of front cover 2 is clamped and fixed with front buffer pad 23, and the inner end of rear cover 3 is clamped and fixed with rear buffer pad 24.

[0022] The cross section of rotation stopping rod 6 is runway-shaped, and the inner end of the rear end is provided with an insertion and sliding limiting groove for rotation stopping rod 6. When piston rod 4 slides in cylinder 1, rotation stopping rod 6 can slide in rear cover 3, and due to the runway-shaped cross section of rotation stopping rod 6, piston rod 4 will not rotate, but only slide left and right in cylinder 1, so that the abrasion rate of dynamic seal on piston rod 4 can be reduced.

[0023] With reference to Figure 2 , four first locking pieces 8 are evenly arranged on the circumferential side of cylinder 1 close to one end of rear cover 3, the first locking piece 8 includes a driving wheel 9, a pressing block 10 and a driving rod 11, the side wall of cylinder 1 is evenly provided with a rotating groove 12 in the circumferential direction, the driving wheel 9 is rotationally connected in the rotating groove 12, one end of the pressing block 10 is welded and fixed to the side wall of the driving wheel 9, the circumferential side of the rear cover 3 is evenly provided with four locking grooves 13, the vertical cross section of the locking groove 13 is fan-shaped, one end of the driving rod 11 is welded and fixed to the side wall of the driving wheel 9, and the outer circumferential side of the cylinder 1 is evenly provided with four placing grooves 14 in the circumferential direction, one end of the placing groove 14 is communicated with the rotating groove 12, and the driving rod 11 is embedded and placed in the placing groove 14.

[0024] The side wall of the placing groove 14 is integrally provided with a clamping block 15, the clamping block 15 is semispherical, and the side wall of the driving rod 11 is provided with a clamping groove 16 for clamping and fixing the clamping block 15. After the driving rod 11 drives the driving wheel 9 to rotate, until the pressing block 10 abuts against the side wall of the locking groove 13, the driving rod 11 is embedded in the placing groove 14, so that the clamping block 15 is clamped in the clamping groove 16, the driving rod 11 is fixed in the placing groove 14, and the pressing block 10 is stably abutted in the locking groove 13.

[0025] With reference to Figure 3The four second locking members 17 are evenly arranged between the front cover 2 and the cylinder 1 in the circumferential direction, and the second locking member 17 comprises a locking hook 18 and a locking hole 19. The circumferential side of the inner end of the front cover 2 is evenly provided with a placing groove 25. One end of the locking hook 18 is integrally fixed to the side wall of the front cover 2, and the other end of the locking hook 18 is bendable in the placing groove 25. The vertical section of the locking hook 18 is in the shape of 'L'. The four locking holes 19 are evenly arranged on the side wall of one end of the cylinder 1 in the circumferential direction, and the protruding end of the locking hook 18 is clamped and fixed in the locking hole 19. When the dynamic seal needs to be replaced, the one end of the locking hook 18 is ejected from the locking hole 19, then the one end of the locking hook 18 slides out along the connecting sliding groove 20, then the front cover 2 can be disassembled from one end of the cylinder 1, at the same time, the driving rod 11 can be driven to rotate the driving wheel 9, then the pressing block 10 is rotated out of the locking slot 13, then the rear cover 3 can be disassembled from the other end of the cylinder 1, then the piston rod 4 can be disassembled from the cylinder 1, then the dynamic seal is disassembled from the circumferential side of the piston rod 4 and a new dynamic seal is sleeved on the circumferential side of the piston rod 4, the piston rod 4 is inserted and installed in the cylinder 1, and finally the front cover 2 and the rear cover 3 are respectively inserted and fixed at the two ends of the cylinder 1.

[0026] The four connecting sliding grooves 20 are evenly arranged on the inner circumferential side of the cylinder 1 near one end of the front cover 2, and the connecting sliding groove 20 connects the locking hole 19 and the outer end surface of the cylinder 1.

[0027] Referring to Figure 1 The circumferential side of the inner end of the front cover 2 is provided with a first ring groove in the circumferential direction, and the first sealing ring 21 is clamped and fixed in the first ring groove. The outer side wall of the first sealing ring 21 abuts against the inner side wall of one end of the cylinder 1. The circumferential side of the inner end of the rear end is provided with a second ring groove in the circumferential direction, and the second sealing ring 22 is clamped and fixed in the second ring groove. The outer side wall of the second sealing ring 22 abuts against the inner side wall of the other end of the cylinder 1.

[0028] The above is only a preferred embodiment of the present application, so equivalent changes or modifications made according to the structure, features and principles of the present application patent application range are included in the present application patent application range.

Claims

1. A kind of rotation-stopping cylinder, including cylinder barrel (1), front cover (2), rear cover (3) and piston rod (4), the front cover (2) and the rear cover (3) are respectively inserted in the both ends of the cylinder barrel (1), the piston rod (4) slip in the cylinder barrel (1), one end of the piston rod (4) is inserted in the front cover (2), it is characterized by: The cylinder (1) is provided with a plurality of first locking members (8) on the periphery near the rear cover (3), the first locking member (8) comprises a driving wheel (9), a pressing block (10) and a driving rod (11), the driving wheel (9) is rotatably connected to the side wall of the cylinder (1), one end of the pressing block (10) is arranged on the side wall of the driving wheel (9), the rear cover (3) is provided with a locking groove (13) on the periphery, the other end of the pressing block (10) is fixed in the locking groove (13), one end of the driving rod (11) is arranged on the side wall of the driving wheel (9).

2. A scuffing gas cylinder according to claim 1, characterized in that A plurality of second locking members (17) are arranged between the front cover (2) and the cylinder (1), the second locking member (17) comprises a locking hook (18) and a locking hole (19), one end of the locking hook (18) is arranged on the periphery of the front cover (2), the locking hole (19) is arranged on the periphery of the cylinder (1), the other end of the locking hook (18) is fixedly connected in the locking hole (19).

3. A scuffing gas cylinder according to claim 2, characterized in that The cylinder (1) is provided with a plurality of connecting sliding grooves (20) on the inner periphery near the front cover (2), the connecting sliding groove (20) connects the locking hole (19) and the outer end surface of the cylinder (1).

4. A scuffing gas cylinder according to claim 1, characterized in that One end of the piston rod (4) is provided with a rotation stopping rod (6), the cross section of the rotation stopping rod (6) is polygonal, the rotation stopping rod (6) is inserted and slid in the rear cover (3).

5. A scuffing gas cylinder according to claim 1, characterized in that The side wall of the cylinder (1) is provided with a plurality of placing grooves (14) for embedding the driving rod (11).

6. A scuffing gas cylinder according to claim 5, characterized in that The side wall of the placing groove (14) is provided with a clamping block (15), the side wall of the driving rod (11) is provided with a clamping groove (16) for clamping the clamping block (15).

7. A scuffing gas cylinder according to claim 1, characterized in that The inner end of the front cover (2) is provided with a first sealing ring (21), and the inner end of the rear cover (3) is provided with a second sealing ring (22).

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