Buffer type hydraulic oil cylinder
By setting multiple buffer components and rotating components in the hydraulic cylinder, and utilizing the friction and squeezing action of the damping ring and spring, the movement of the piston disc is buffered, thus solving the problem of piston-cylinder collision and achieving the effects of reducing impact and noise and protecting the cylinder.
Patent Information
- Application Number
- CN202422721955.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-08
AI Technical Summary
When the moving parts of an existing hydraulic cylinder have a large mass and a high speed, the piston is prone to mechanical collision with the end cap when it moves to the end of the cylinder, which generates impact and noise, affects mechanical precision and may cause damage.
A buffer-type hydraulic cylinder was designed. By setting multiple buffer components and rotating components, including a squeezing component, a tossing component, a second buffer component, and a rotating component, the movement of the piston disc is buffered by the friction and squeezing action of the damping ring and spring, thus avoiding direct collision between the piston and the cylinder body.
This effectively avoids direct collision between the piston and the cylinder, reduces mechanical shock and noise, protects the integrity of the cylinder, and improves the precision and reliability of the machinery.
Smart Images
Figure CN223524107U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic oil cylinder technical field, concretely is a buffer formula hydraulic oil cylinder. BACKGROUND
[0002] Hydraulic cylinder is the hydraulic energy into mechanical energy, do linear reciprocating motion (or swing motion) hydraulic actuator. It is simple in structure, reliable in operation. When it is used to realize reciprocating motion, the speed reducer can be dispensed with, and there is no transmission gap, and the movement is stable, so it is widely used in various mechanical hydraulic systems. The output force of hydraulic cylinder and the effective area of piston are proportional to the pressure difference on both sides; hydraulic cylinder is basically composed of cylinder and cylinder cover, piston and piston rod, sealing device, buffer device and exhaust device. The buffer device and exhaust device are determined according to the specific application, and the other devices are essential;
[0003] But in the hydraulic transmission system, when the mass of the moving parts is large, the speed is high, due to the effect of inertia force, it has great momentum, in the hydraulic cylinder, when the piston moves to the terminal of the cylinder, mechanical collision often occurs with the end cover, which produces great impact and noise, which seriously affects the mechanical precision; Long-term collision can even cause destructive accidents, therefore, we put forward a kind of buffer formula hydraulic oil cylinder. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem of overcoming the defects of the prior art, provides a buffer formula hydraulic oil cylinder, which can buffer the impact caused by the piston, avoid the damage of the cylinder body, and effectively solve the problems in the background art.
[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a buffer formula hydraulic oil cylinder, which comprises a cylinder body and a second buffer assembly;
[0006] The cylinder body: the upper end of the inside is fixed with a sealing head, the inside of the sealing head is slidably connected with a connecting rod, the lower end of the connecting rod is fixed with a piston disc, the piston disc is slidably connected in the inside of the cylinder body, four corresponding rotating assemblies are installed on the left and right ends of the circumference surface of the cylinder body, the surface of the rotating assembly is installed with a first buffer assembly, two corresponding third buffer assemblies are installed in the inside of the sealing head, the upper end of the third buffer assembly is connected with a push assembly, two push assemblies are connected with four rotating assemblies;
[0007] The second buffer assembly: fixed column, first damping disc and first spring, the lower end of the inside of the cylinder body is fixed with a fixed column, the upper end of the fixed column is provided with a groove, the inside of the groove is slidably connected with a first damping disc, the lower end of the first damping disc is fixed with a first spring, the first spring is fixed in the inside of the groove, the downward moving piston disc is buffered through the setting of the second buffer assembly.
[0008] Further, the third buffer assembly comprises a fixed tube, a limiting ring, a guide rod, a damping column, a pressing disc and a second spring, the upper end of the sealing head is provided with two corresponding fixed holes, the inside of the fixed hole is fixed with the fixed tube, the upper end of the inside of the fixed tube is fixed with the limiting ring, the inside of the limiting ring is slidably connected with the guide rod, the lower end of the guide rod is fixed with the damping column, the damping column is slidably connected in the inside of the fixed tube, the circumferential surface of the guide rod is sleeved with the second spring, the lower end of the second spring is fixed on the upper end of the damping column, and the upper end of the second spring is fixed on the lower end of the limiting ring, and the third buffer assembly is arranged to preliminarily buffer the upward moving piston disc.
[0009] Further, the dialing assembly comprises a connecting plate, a sliding frame, a mounting block, a third spring and a rack, the upper end of the guide rod is fixed with the connecting plate, the lower side of the connecting plate is fixed with the sliding frame, the circumferential surface of the cylinder body is fixed with two corresponding mounting blocks, the mounting blocks are located in the inside of the sliding frame, the upper and lower sides of the mounting block are fixed with two corresponding third springs, the ends, away from the mounting block, of the two third springs are fixed on the upper and lower sides in the inside of the sliding frame, and the front and rear sides of the sliding frame are fixed with two corresponding racks.
[0010] Further, the rotating assembly comprises a rotating shaft, a connecting disc and a gear ring, the left and right ends of the circumferential surface of the cylinder body are rotatably connected with four corresponding rotating shafts, the end surface of the rotating shaft is fixed with the connecting disc, and the circumferential surface of the rotating shaft is rotatably connected with the gear ring; the gear ring is engaged with the rack, and the rotating assembly is arranged to drive the four first damping rings to rotate.
[0011] Further, the first buffer assembly comprises a first damping ring and a second damping ring, the end surface of the gear ring is fixed with the first damping ring, and the circumferential surface of the rotating shaft is fixed with the second damping ring; the first damping ring is attached to the second damping ring, and the first buffer assembly is arranged to further buffer the upward moving piston disc.
[0012] Further, the pressing assembly comprises a fixed ring and a pressing head, the upper end of the piston disc is fixed with the fixed ring, the upper end of the fixed ring is fixed with two corresponding pressing heads, and the pressing head is corresponding to the pressing disc; the pressing assembly is arranged to press the two pressing discs.
[0013] Compared with the prior art, the buffer type hydraulic oil cylinder has the following advantages:
[0014] 1、 through setting extrusion assembly makes the piston disc in the process of moving up will drive two extrusion head to move up to two extrusion disc extrusion, extrusion disc after extrusion moves up two damping columns to move such cases can be to the piston disc moving up preliminary buffering, thereby preliminary avoid the upper cylinder body due to impact damage;
[0015] 2、 through setting the component makes two damping columns move up in the process will drive two connecting plates to move up, two connecting plates move up drive two slide frame to move down, two slide frame move up drive four rack to move, four rack move dial four gear ring to move, four gear ring rotation drive four first damping ring to rotate, four first damping ring in the process of rotating will with four second damping ring friction, such cases can further to the piston disc moving up buffering, thereby further avoid the upper cylinder body due to impact damage;
[0016] 3、 through setting the second buffering assembly makes the piston disc moves down in the process will impact the first damping disc to move down along the fixed column upper end groove to move, such cases can be to the piston disc moving down buffering, thereby avoid the lower cylinder body due to impact damage. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the front side structure schematic diagram of the utility model;
[0018] Figure 2 It is the A place enlarged view of the utility model;
[0019] Figure 3 It is the front side sectional view of the utility model;
[0020] Figure 4 It is the B place enlarged view of the utility model.
[0021] In the drawing: 1 cylinder, 2 sealing head, 3 piston disc, 4 first buffering assembly, 41 first damping ring, 42 second damping ring, 5 second buffering assembly, 51 fixed column, 52 first damping disc, 53 first spring, 6 extrusion assembly, 61 fixed ring, 62 extrusion head, 7 third buffering assembly, 71 fixed tube, 72 limit ring, 73 guide rod, 74 damping column, 75 extrusion disc, 76 second spring, 8 dial component, 81 connecting plate, 82 slide frame, 83 mounting block, 84 third spring, 85 rack, 9 rotation assembly, 91 rotation shaft, 92 connecting disc, 93 gear ring, 10 connecting rod. DETAILED DESCRIPTION
[0022] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0023] Please refer to Figures 1-4 The embodiment provides a technical scheme: a buffer type hydraulic oil cylinder, which comprises a cylinder body 1 and a second buffer assembly 5.
[0024] The upper end of the cylinder body 1 is fixed with a sealing head 2, the inside of the sealing head 2 is slidably connected with a connecting rod 10, the lower end of the connecting rod 10 is fixed with a piston disc 3, the piston disc 3 is slidably connected in the inside of the cylinder body 1, four corresponding rotating assemblies 9 are installed on the circumference of the left and right ends of the cylinder body 1, the surface of the rotating assembly 9 is installed with a first buffer assembly 4, two corresponding third buffer assemblies 7 are installed in the inside of the sealing head 2, the upper end of the third buffer assembly 7 is connected with a poking assembly 8, the two poking assemblies 8 are connected with the four rotating assemblies 9, the third buffer assembly 7 comprises a fixed tube 71, a limiting ring 72, a guide rod 73, a damping column 74, an extrusion disc 75 and a second spring 76, two corresponding fixed holes are formed in the upper end of the sealing head 2, the inside of the fixed hole is fixed with the fixed tube 71, the upper end of the inside of the fixed tube 71 is fixed with the limiting ring 72, the inside of the limiting ring 72 is slidably connected with the guide rod 73, the lower end of the guide rod 73 is fixed with the damping column 74, the damping column 74 is slidably connected in the inside of the fixed tube 71, the circumference of the guide rod 73 is sleeved with the second spring 76, the lower end of the second spring 76 is fixed on the upper end of the damping column 74, the upper end of the second spring 76 is fixed on the lower end of the limiting ring 72, the poking assembly 8 comprises a connecting plate 81, a sliding frame 82, a mounting block 83, a third spring 84 and a rack 85, the upper end of the guide rod 73 is fixed with the connecting plate 81, the lower side of the connecting plate 81 is fixed with the sliding frame 82, two corresponding mounting blocks 83 are fixed on the circumference of the cylinder body 1, the mounting block 83 is located in the inside of the sliding frame 82, two corresponding third springs 84 are fixed on the upper and lower sides of the mounting block 83, the ends of the two third springs 84 away from the mounting block 83 are respectively fixed on the upper and lower sides of the inside of the sliding frame 82, two corresponding racks 85 are fixed on the front and rear sides of the sliding frame 82, the rotating assembly 9 comprises a rotating shaft 91, a connecting disc 92 and a gear ring 93, four corresponding rotating shafts 91 are rotatably connected on the circumference of the left and right ends of the cylinder body 1, the end surface of the rotating shaft 91 is fixed with the connecting disc 92, the circumference of the rotating shaft 91 is rotatably connected with the gear ring 93, the gear ring 93 is engaged with the rack 85, the rotating assembly 9 drives the four first damping rings 41 to rotate by being arranged, the first buffer assembly 4 comprises a first damping ring 41 and a second damping ring 42, the end surface of the gear ring 93 is fixed with the first damping ring 41, the circumference of the rotating shaft 91 is fixed with the second damping ring 42, the first damping ring 41 is attached to the second damping ring 42, the extrusion assembly 6 comprises a fixed ring 61 and an extrusion head 62, the upper end of the piston disc 3 is fixed with the fixed ring 61, the upper end of the fixed ring 61 is fixed with two corresponding extrusion heads 62, the extrusion head 62 corresponds to the extrusion disc 75, the extrusion assembly 6 extrudes the two extrusion discs 75 by being arranged, the first buffer assembly 4 further buffers the upward moving piston disc 3 by being arranged, the four gear rings 93 are rotated by being arranged, the third buffer assembly 7 preliminarily buffers the upward moving piston disc 3 by being arranged;
[0025] The second buffer assembly 5 is provided with a fixed column 51, a first damping disc 52 and a first spring 53, the lower end of the fixed column 51 is fixed in the cylinder body 1, the upper end of the fixed column 51 is provided with a groove, the first damping disc 52 is slidably connected in the groove, the lower end of the first damping disc 52 is fixed with the first spring 53, and the first spring 53 is fixed in the groove.
[0026] The working principle of the buffer type hydraulic oil cylinder is as follows: the piston disc 3 drives the two extrusion heads 62 to move upwards to extrude the two extrusion discs 75 in the process of moving upwards by the extrusion assembly, the extrusion disc 75 drives the two damping columns 74 to move upwards after extrusion, the two connecting plates 81 are driven to move upwards in the process that the two damping columns 74 move upwards, the two connecting plates 81 drive the two sliding frames 82 to move downwards, the four racks 85 are driven to move by the two sliding frames 82 moving upwards, the four gear rings 93 are driven to move by the four racks 85 moving, the four first damping rings 41 are driven to rotate by the four gear rings 93 rotating, the four first damping rings 41 are driven to rotate in the process of rotating, and the four second damping rings 42 are rubbed, so that the piston disc 3 moving upwards is further buffered, and the cylinder body 1 on the upper side is further prevented from being damaged due to impact, and the piston disc 3 moves downwards to impact the first damping disc 52 to move downwards along the groove provided at the upper end of the fixed column 51, so that the piston disc 3 moving downwards is buffered, and the cylinder body 1 on the lower side is prevented from being damaged due to impact.
[0027] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation by using the contents of the utility model specification and drawings or directly or indirectly applied in other related technical fields is also included in the patent protection range of the utility model.
Claims
1. A cushioned hydraulic cylinder characterized by: It include cylinder (1) and second buffer assembly (5); Cylinder (1): the upper end of the inside is fixed with sealing head (2), the inside of sealing head (2) is slidably connected with connecting rod (10), the lower end of connecting rod (10) is fixed with piston disc (3), piston disc (3) is slidably connected in the inside of cylinder (1), the circumference of the left and right ends of cylinder (1) is installed with four corresponding rotating assemblies (9), the surface of rotating assembly (9) is installed with first buffer assembly (4), the inside of sealing head (2) is installed with two corresponding third buffer assemblies (7), the upper end of third buffer assembly (7) is connected with dialing assembly (8), two dialing assemblies (8) are connected with four rotating assemblies (9); Second buffer assembly (5): fixed column (51), first damping disc (52) and first spring (53), the lower end of the inside of cylinder (1) is fixed with fixed column (51), the upper end of fixed column (51) is provided with recess, the inside of recess is slidably connected with first damping disc (52), the lower end of first damping disc (52) is fixed with first spring (53), first spring (53) is fixed in the inside of recess.
2. A cushioned hydraulic cylinder according to claim 1, characterized in that: The third buffer assembly (7) includes a fixed tube (71), a limiting ring (72), a guide rod (73), a damping column (74), an extrusion disc (75) and a second spring (76), the upper end of the sealing head (2) is provided with two corresponding fixed holes, the inside of the fixed hole is fixed with the fixed tube (71), the upper end of the inside of the fixed tube (71) is fixed with the limiting ring (72), the inside of the limiting ring (72) is slidably connected with the guide rod (73), the lower end of the guide rod (73) is fixed with the damping column (74), the damping column (74) is slidably connected in the inside of the fixed tube (71), the circumference of the guide rod (73) is sleeved with the second spring (76), the lower end of the second spring (76) is fixed on the upper end of the damping column (74), the upper end of the second spring (76) is fixed on the lower end of the limiting ring (72).
3. A cushioned hydraulic cylinder according to claim 2, characterized in that: The dialing assembly (8) includes a connecting plate (81), a sliding frame (82), a mounting block (83), a third spring (84) and a rack (85), the upper end of the guide rod (73) is fixed with the connecting plate (81), the lower side of the connecting plate (81) is fixed with the sliding frame (82), the circumference of the cylinder (1) is fixed with two corresponding mounting blocks (83), the mounting block (83) is located in the inside of the sliding frame (82), the upper and lower sides of the mounting block (83) are fixed with two corresponding third springs (84), the ends of the two third springs (84) away from the mounting block (83) are respectively fixed on the upper and lower sides in the inside of the sliding frame (82), the front and rear sides of the sliding frame (82) are fixed with two corresponding racks (85).
4. A cushioned hydraulic ram as claimed in claim 3 wherein: The rotating assembly (9) comprises rotating shafts (91), connecting discs (92) and gear rings (93), the left and right ends of the circumferential surface of the cylinder body (1) are rotatably connected with four corresponding rotating shafts (91), the end surface of the rotating shaft (91) is fixed with a connecting disc (92), and the circumferential surface of the rotating shaft (91) is rotatably connected with a gear ring (93); the gear ring (93) is engaged with the gear rack (85).
5. A cushioned hydraulic ram as claimed in claim 4 wherein: The first buffering assembly (4) comprises first damping rings (41) and second damping rings (42), the end surface of the gear ring (93) is fixed with a first damping ring (41), the circumferential surface of the rotating shaft (91) is fixed with a second damping ring (42), and the first damping ring (41) is attached to the second damping ring (42).
6. A cushioned hydraulic cylinder as claimed in claim 2, wherein: The extruding assembly (6) comprises fixed rings (61) and extruding heads (62), the upper end of the piston disc (3) is fixed with a fixed ring (61), the upper end of the fixed ring (61) is fixed with two corresponding extruding heads (62), and the extruding heads (62) correspond to the extruding disc (75).