A hydraulic cylinder barrel structure for preventing axial rotation

Abstract

The present invention provides a hydraulic oil cylinder barrel structure for preventing axial rotation, comprising a cylinder barrel body, a fixed plate welded on the surface of the cylinder barrel body, a piston rod movably connected at the center of the top of the cylinder barrel body, a first fixed block welded at the center of the top of the piston rod, and a first connecting hole is opened at the center of the front of the first fixed block, and clamping mechanisms are provided on both sides of the piston rod. The present invention facilitates users to clamp and limit the piston rod through the clamping seat through the cooperation of a movable column, a fixed box, a first threaded sleeve, a first threaded rod, a bearing, a movable plate, a limiting column and a clamping seat to prevent the piston rod from axially rotating during jacking, facilitates users to tighten and limit the two clamping seats through the cooperation of a mounting block, a second threaded sleeve, a second threaded rod and a protrusion, and facilitates users to assist the clamping mechanism in limiting the piston rod through the cooperation of a positioning block and a positioning rod.

Description

Technical Field

[0001] The invention relates to the field of hydraulic cylinders, and in particular to a hydraulic oil cylinder barrel structure capable of preventing axial rotation. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it can eliminate the need for a deceleration device, and there is no transmission gap, and the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The hydraulic cylinder is generally composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasion, and other devices are indispensable.

[0003] The cylinder barrel and piston rod of the hydraulic cylinder are both cylindrical. When the piston rod moves upward and rises in the inner cavity of the cylinder barrel, the traditional hydraulic cylinder barrel structure cannot prevent the piston rod from axially rotating, which will cause the piston rod to rotate while rising, greatly reducing the stability of the hydraulic cylinder. At the same time, it will also affect the lifting effect of the piston rod on the object. Moreover, the connecting hole on the top of the piston rod is mostly fixedly connected to the object. The rotation of the piston rod will cause the piston rod to break, posing a great safety hazard.

[0004] Therefore, it is necessary to provide a hydraulic cylinder barrel structure that prevents axial rotation to solve the above technical problems. Summary of the invention

[0005] The invention provides a hydraulic oil cylinder barrel structure capable of preventing axial rotation, thereby solving the problem that a conventional hydraulic oil cylinder barrel structure cannot prevent a piston rod from axially rotating.

[0006] In order to solve the above technical problems, the present invention provides a hydraulic cylinder barrel structure for preventing axial rotation, comprising: a cylinder body, a fixed plate welded to the surface of the cylinder body, a piston rod movably connected at the center of the top of the cylinder body, a first fixed block welded at the center of the top of the piston rod, and a first connecting hole is opened at the center of the front side of the first fixed block, clamping mechanisms are arranged on both sides of the piston rod, limiting mechanisms are arranged on both sides of the top of the front side of the clamping mechanism, a second fixed block is welded at the center of the bottom of the cylinder body, and a second connecting hole is opened at the center of the bottom of the front side of the second fixed block.

[0007] Preferably, the clamping mechanism includes a movable column, a fixed box, a first threaded sleeve, a first threaded rod, a bearing, a movable plate, a limit column and a clamping seat, through grooves are provided on both sides of the top of the fixed plate, and the inner cavity of the through groove is slidably connected with the movable column, the top of the movable column is bolted with a fixed box, a first threaded sleeve is embedded in the center of the outer side of the fixed box, the inner cavity of the first threaded sleeve is threadedly connected with the first threaded rod, the opposite side of the first threaded rod is rotatably connected with the bearing, the opposite side of the bearing is bolted with the movable plate, the opposite side of the movable plate is bolted with the limit column at the center, and the opposite side of the limit column passes through the fixed box and is bolted with the clamping seat.

[0008] Preferably, the limiting mechanism includes a mounting block, a second threaded sleeve, a second threaded rod and a protrusion, and the mounting block and the protrusion are bolted to the center of the front and back sides of the clamping seat from left to right in sequence, a second threaded sleeve is welded on the right side of the mounting block, the inner cavity of the second threaded sleeve is threadedly connected to the second threaded rod, and the right side of the second threaded rod passes through the protrusion and is bolted to a handle.

[0009] Preferably, the outer sides of the front and back sides of the inner cavity of the fixing box are both bolted to limit rods, and the opposite sides of the limit rods penetrate the movable plate and are bolted to the inner side of the inner cavity of the fixing box.

[0010] Preferably, springs are bolted to the front and back sides of the outer side of the movable plate, and the side of the spring away from the movable plate is bolted to the outer side of the inner cavity of the fixed box.

[0011] Preferably, a slide groove is horizontally opened at the center of the top of the fixed box, the inner cavity of the slide groove is slidably connected with a slider, the top of the slider passes through the slide groove and is bolted with a connecting plate, the bottom of the connecting plate on the opposite side is bolted with a connecting block, and the bottom of the connecting block is bolted to the top of the clamping seat.

[0012] Preferably, a U-shaped groove is provided on one side of the clamping seat facing each other, and an anti-slip pad is bonded to the inner cavity of the U-shaped groove.

[0013] Preferably, the bottom of the front and back sides of the piston rod are both bolted with positioning blocks, the bottom of the positioning blocks are fixedly connected with a positioning rod, and the bottom of the positioning rod passes through the fixed disk and is bolted with a positioning plate.

[0014] Preferably, a limit plate is bolted to the bottom of the movable column, and a nameplate is bolted to the right side of the bottom of the front side of the cylinder body.

[0015] Preferably, a limiting block is fixedly connected to the center of the outer side of the movable column, a rotating handle is bolted to the outer side of the first threaded rod, and a non-slip sleeve is provided on the surface of the rotating handle.

[0016] Compared with the related art, the hydraulic cylinder barrel structure for preventing axial rotation provided by the present invention has the following beneficial effects:

[0017] 1. The present invention facilitates the user to clamp and limit the piston rod through the clamping seat through the cooperation of the movable column, the fixed box, the first threaded sleeve, the first threaded rod, the bearing, the movable plate, the limit column and the clamping seat, thereby improving the stability of the piston rod and preventing the piston rod from axially rotating during jacking. At the same time, the movable column slides in the through groove, and the auxiliary clamping seat quickly rises following the jacking of the piston rod. Through the cooperation of the mounting block, the second threaded sleeve, the second threaded rod and the protrusion, the user is convenient to fasten and limit the two clamping seats, thereby improving the clamping and limiting effect of the clamping seat on the piston rod. Through the cooperation of the positioning block and the positioning rod, the user is convenient to assist the clamping mechanism to limit the piston rod, thereby further improving the stability of the piston rod and preventing the piston rod from axially rotating during work, thereby solving the problem that the traditional hydraulic cylinder barrel structure cannot prevent the piston rod from axially rotating.

[0018] 2. The present invention facilitates the user to limit the piston rod through the cooperation of the movable column, the fixing box, the first threaded sleeve, the first threaded rod, the bearing, the movable plate, the limiting column and the clamping seat, thereby preventing the piston rod from axially rotating during jacking. Through the cooperation of the mounting block, the second threaded sleeve, the second threaded rod and the protrusion, the user can limit the two clamping seats, thereby improving the limiting effect of the clamping seat on the piston rod. Through the cooperation of the limiting rod, the user can limit the movable plate, thereby preventing the movable plate from deflecting during the movement, thereby improving the stability of the movable plate. Through the cooperation of the spring, the user can buffer the movable plate, while the elastic rebound of the spring improves the limiting effect of the clamping seat on the piston rod. Through the cooperation of the slide groove, the slider and the connecting plate, the stability of the clamping seat is improved. The U-shaped groove and the anti-skid pad can be used to better fit the surface of the clamping seat and the piston rod, and the anti-skid pad can improve the friction between the clamping seat and the piston rod. The positioning block, the positioning rod and the positioning plate can be used to limit the piston rod to prevent the piston rod from axial rotation. The positioning plate can be used to limit the moving column. The nameplate can assist the user in understanding the model and other information of the cylinder body. The positioning block can be used to limit the moving column to prevent the moving column from falling directly when the piston rod does not need to be clamped, which will cause the fixed box to collide with the cylinder body. The anti-skid sleeve can be used to improve the friction between the user's palm and the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of a preferred embodiment of a hydraulic oil cylinder barrel structure for preventing axial rotation provided by the present invention;

[0020] Figure 2 for Figure 1 A top view of the structure of the fixed box shown;

[0021] Figure 3 for Figure 1 An enlarged view of the structure at A shown;

[0022] Figure 4 for Figure 1 A structural stereogram of the fixing seat, the second threaded sleeve and the mounting block shown;

[0023] Figure 5 for Figure 1 A structural stereogram of the moving plate and the bearing shown;

[0024] Figure 6 for Figure 1 A structural stereogram of the fixed disk shown.

[0025] Numbers in the figure: 1. Cylinder body; 2. Fixed plate; 3. Clamping mechanism; 31. Moving column; 32. Fixed box; 33. First threaded sleeve; 34. First threaded rod; 35. Bearing; 36. Moving plate; 37. Limiting column; 38. Clamping seat; 4. Slide groove; 5. Slider; 6. Connecting plate; 7. Limiting block; 8. Positioning block; 9. Positioning rod; 10. Limiting plate; 11. Limiting mechanism; 111. Mounting block; 112. Second threaded sleeve; 113. Second threaded rod; 114. Bump; 12. Spring; 13. Limiting rod; 14. Piston rod. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0027] See also Figures 1 to 6 A hydraulic cylinder barrel structure for preventing axial rotation includes a cylinder body 1, a fixed plate 2 is welded on the surface of the cylinder body 1, a piston rod 14 is movably connected at the center of the top of the cylinder body 1, a first fixed block is welded at the center of the top of the piston rod 14, and a first connecting hole is opened at the center of the front of the first fixed block, clamping mechanisms 3 are arranged on both sides of the piston rod 14, and limiting mechanisms 11 are arranged on both sides of the top of the front of the clamping mechanism 3, a second fixed block is welded at the center of the bottom of the cylinder body 1, and a second connecting hole is opened at the center of the bottom of the front of the second fixed block.

[0028] The clamping mechanism 3 includes a moving column 31, a fixed box 32, a first threaded sleeve 33, a first threaded rod 34, a bearing 35, a moving plate 36, a limiting column 37 and a clamping seat 38. Through grooves are provided on both sides of the top of the fixed plate 2, and the inner cavity of the through groove is slidably connected with the moving column 31, the top of the moving column 31 is bolted with the fixed box 32, the center of the outer side of the fixed box 32 is embedded with a first threaded sleeve 33, the inner cavity of the first threaded sleeve 33 is threadedly connected with the first threaded rod 34, and the first threaded rod 34 is rotated on the opposite side. A bearing 35 is dynamically connected, a movable plate 36 is bolted to the side facing the bearing 35, a limiting column 37 is bolted at the center of the side facing the movable plate 36, the side facing the limiting column 37 passes through the fixed box 32 and is bolted to a clamping seat 38, through the cooperation of the movable column 31, the fixed box 32, the first threaded sleeve 33, the first threaded rod 34, the bearing 35, the movable plate 36, the limiting column 37 and the clamping seat 38, it is convenient for the user to limit the piston rod 14 to prevent the piston rod 14 from axial rotation during jacking.

[0029] The limiting mechanism 11 includes a mounting block 111, a second threaded sleeve 112, a second threaded rod 113 and a protrusion 114. The mounting block 111 and the protrusion 114 are bolted to the center of the front and back sides of the clamping seat 38 from left to right in sequence. The second threaded sleeve 112 is welded to the right side of the mounting block 111. The inner cavity of the second threaded sleeve 112 is threadedly connected to the second threaded rod 113. The right side of the second threaded rod 113 passes through the protrusion 114 and is bolted to a handle. Through the cooperation of the mounting block 111, the second threaded sleeve 112, the second threaded rod 113 and the protrusion 114, it is convenient for the user to limit the two clamping seats 38, thereby improving the limiting effect of the clamping seat 38 on the piston rod 14.

[0030] The outer sides of the front and back sides of the inner cavity of the fixed box 32 are bolted to the limiting rods 13, and the opposite side of the limiting rods 13 passes through the movable plate 36 and is bolted to the inner side of the inner cavity of the fixed box 32. Through the cooperation of the limiting rods 13, it is convenient for the user to limit the movable plate 36 to prevent the movable plate 36 from deflecting during the movement, thereby improving the stability of the movable plate 36.

[0031] Springs 12 are bolted to the front and back sides of the outer side of the movable plate 36. The side of the spring 12 away from the movable plate 36 is bolted to the outer side of the inner cavity of the fixed box 32. The cooperation of the spring 12 facilitates the user to buffer the movable plate 36. At the same time, the elastic rebound of the spring 12 improves the limiting effect of the clamping seat 38 on the piston rod 14.

[0032] A slide groove 4 is horizontally opened at the center of the top of the fixed box 32, and a slider 5 is slidably connected to the inner cavity of the slide groove 4. The top of the slider 5 passes through the slide groove 4 and is bolted to a connecting plate 6. A connecting block is bolted to the bottom of the connecting plate 6 on the opposite side, and the bottom of the connecting block is bolted to the top of the clamping seat 38. Through the cooperation of the slide groove 4, the slider 5 and the connecting plate 6, the stability of the clamping seat 38 is improved, thereby improving the clamping effect of the clamping seat 38.

[0033] A U-shaped groove is provided on the opposite side of the clamping seat 38, and an anti-skid pad is bonded to the inner cavity of the U-shaped groove. The cooperation between the U-shaped groove and the anti-skid pad facilitates the clamping seat 38 to better fit the surface of the piston rod 14, and the anti-skid pad increases the friction between the clamping seat 38 and the piston rod 14.

[0034] The bottom of the front and back sides of the piston rod 14 are bolted with positioning blocks 8, the bottom of the positioning blocks 8 are fixedly connected with positioning rods 9, the bottom of the positioning rods 9 passes through the fixed disk 2 and is bolted with positioning plates. Through the cooperation of the positioning blocks 8, the positioning rods 9 and the positioning plates, the user can limit the piston rod 14 to prevent the piston rod 14 from axial rotation.

[0035] The bottom of the movable column 31 is bolted with a limit plate 10, and the right side of the bottom front side of the cylinder body 1 is bolted with a nameplate. The cooperation of the limit plate 10 facilitates the user to limit the movable column 31, and the cooperation of the nameplate assists the user to understand the model and other information of the cylinder body 1.

[0036] A limiting block 7 is fixedly connected to the center of the outer side of the moving column 31, a rotating handle is bolted to the outer side of the first threaded rod 34, and a non-slip sleeve is provided on the surface of the rotating handle. The cooperation of the limiting block 7 facilitates the user to limit the moving column 31 to prevent the moving column 31 from falling directly when the piston rod 14 does not need to be clamped, thereby causing the fixed box 32 to collide with the cylinder body 1. The cooperation of the non-slip sleeve improves the friction between the user's palm and the rotating handle.

[0037] Here’s how it works:

[0038] When in use, the two rotary handles are rotated at the same time, and the rotary handles drive the first threaded rod 34 to rotate and move in the inner cavity of the first threaded sleeve 33, thereby driving the moving plate 36 to push inward at the same time through the bearing 35, and then the moving plate 36 drives the limiting column 37 to move inward at the same time, thereby driving the two clamping seats 38 to squeeze and limit the piston rod 14 at the same time. Then the handle is rotated, and the handle drives the second threaded rod 113 to move to the left until it enters the inner cavity of the second threaded sleeve 112, thereby limiting the two clamping seats 38. When the piston rod 14 is working, the piston rod 14 drives the clamping seat 38 and the positioning block 8 to lift at the same time. At this time, the two clamping seats 38 and the positioning block 8 simultaneously drive the moving column 31 and the positioning rod 9 to lift, thereby limiting the piston rod 14 and preventing the piston rod 14 from axial rotation while lifting.

[0039] Compared with the related art, the hydraulic cylinder barrel structure for preventing axial rotation provided by the present invention has the following beneficial effects:

[0040] The present invention facilitates the user to clamp and limit the piston rod 14 through the clamping seat 38 through the cooperation of the movable column 31, the fixed box 32, the first threaded sleeve 33, the first threaded rod 34, the bearing 35, the movable plate 36, the limiting column 37 and the clamping seat 38, thereby improving the stability of the piston rod 14 and preventing the piston rod 14 from axial rotation during jacking. At the same time, the movable column 31 slides in the through groove, and the auxiliary clamping seat 38 quickly follows the jacking of the piston rod 14 and rises. Through the cooperation of the mounting block 111, the second threaded sleeve 112, the second threaded rod 113 and the protrusion 114, it is convenient for the user to fasten and limit the two clamping seats 38, thereby improving the clamping and limiting effect of the clamping seat 38 on the piston rod 14. Through the cooperation of the positioning block 8 and the positioning rod 9, it is convenient for the user to assist the clamping mechanism 3 to limit the piston rod 14, thereby further improving the stability of the piston rod 14 and preventing the piston rod 14 from axial rotation during work, thereby solving the problem that the traditional hydraulic cylinder barrel structure cannot prevent the piston rod from axial rotation.

[0041] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic cylinder barrel structure for preventing axial rotation, characterized in that: The invention comprises a cylinder body (1), a fixing plate (2) is welded on the surface of the cylinder body (1), a piston rod (14) is movably connected at the center of the top of the cylinder body (1), a first fixing block is welded at the center of the top of the piston rod (14), and a first connecting hole is opened at the center of the front of the first fixing block, clamping mechanisms (3) are arranged on both sides of the piston rod (14), and limiting mechanisms (11) are arranged on both sides of the top of the front of the clamping mechanism (3), and a second fixing block is welded at the center of the bottom of the cylinder body (1), and a second connecting hole is opened at the center of the bottom of the front of the second fixing block; The clamping mechanism (3) comprises a movable column (31), a fixed box (32), a first threaded sleeve (33), a first threaded rod (34), a bearing (35), a movable plate (36), a limiting column (37) and a clamping seat (38); through grooves are provided on both sides of the top of the fixed plate (2); the inner cavity of the through groove is slidably connected to the movable column (31); the top of the movable column (31) is bolted to the fixed box (32); the center of the outer side of the fixed box (32) is embedded with a first threaded sleeve (33); the inner cavity of the first threaded sleeve (33) is threadedly connected to the first threaded rod (34); the first threaded rod (34) is rotatably connected to the bearing (35) on one side facing the bearing (35); the movable plate (36) is bolted to the one side facing the bearing (35); the limiting column (37) is bolted to the center of the movable plate (36); the limiting column (37) passes through the fixed box (32) on the one side facing the limiting column and is bolted to the clamping seat (38); A slide groove (4) is transversely provided at the center of the top of the fixing box (32); a slider (5) is slidably connected to the inner cavity of the slide groove (4); the top of the slider (5) passes through the slide groove (4) and is bolted to a connecting plate (6); a connecting block is bolted to the bottom of the connecting plate (6) on the opposite side, and the bottom of the connecting block is bolted to the top of the clamping seat (38); The bottom of the front and back sides of the piston rod (14) are both bolted with positioning blocks (8), the bottom of the positioning blocks (8) is fixedly connected with a positioning rod (9), and the bottom of the positioning rod (9) passes through the fixed plate (2) and is bolted with a positioning plate; A limit block (7) is fixedly connected to the center of the outer side of the movable column (31); a rotary handle is bolted to the outer side of the first threaded rod (34), and a surface of the rotary handle is provided with an anti-slip sleeve; The limiting mechanism (11) comprises a mounting block (111), a second threaded sleeve (112), a second threaded rod (113) and a protrusion (114); the mounting block (111) and the protrusion (114) are bolted to the center of the front and back sides of the clamping seat (38) from left to right in sequence; the second threaded sleeve (112) is welded to the right side of the mounting block (111); the inner cavity of the second threaded sleeve (112) is threadedly connected to the second threaded rod (113); the right side of the second threaded rod (113) passes through the protrusion (114) and is bolted to a handle.

2. The hydraulic cylinder barrel structure for preventing axial rotation according to claim 1, characterized in that: Limit rods (13) are bolted to the outside of the front and back sides of the inner cavity of the fixed box (32), and the opposite side of the limit rods (13) penetrates the movable plate (36) and is bolted to the inside of the inner cavity of the fixed box (32).

3. The hydraulic cylinder barrel structure for preventing axial rotation according to claim 2 is characterized in that: The front and back sides of the outer side of the movable plate (36) are both bolted with springs (12), and the side of the spring (12) away from the movable plate (36) is bolted to the outer side of the inner cavity of the fixed box (32).

4. The hydraulic cylinder barrel structure for preventing axial rotation according to claim 3 is characterized in that: A U-shaped groove is provided on one side of the clamping seat (38) facing each other, and an anti-slip pad is bonded to the inner cavity of the U-shaped groove.

5. The hydraulic cylinder barrel structure for preventing axial rotation according to claim 4 is characterized in that: The bottom of the movable column (31) is bolted to a limit plate (10), and the right side of the bottom of the front side of the cylinder body (1) is bolted to a nameplate.

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