CN219242344U - Damping device for piston rod of hydraulic cylinder - Google Patents

Abstract

The utility model discloses a damping device for a hydraulic cylinder piston rod, which comprises a hydraulic cylinder main body and a piston rod which is connected to the inner surface of the hydraulic cylinder main body in a sliding manner. This damping device for hydraulic cylinder piston rod through setting up buffer structure, when the vibration force passes through the go-between and transmits for the piston rod, the go-between then drives the connecting block through the first blotter of cooperation and slides at the internal surface of protection box, the connecting block drives two stopper cooperation slide bars and drives two drive blocks and move down this moment, the drive block then drives two drive bars cooperation slider extrusion first spring and makes its shrink, it slides at the internal surface of connecting plate to drive spacing post cooperation stopper simultaneously, make its extrusion second spring make its shrink, thereby alleviate the vibration force, drive connecting block cooperation second blotter later, alleviate the vibration force again, thereby protect the piston rod, make it can be more permanent carry out work.

Description

Damping device for piston rod of hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a damping device for a piston rod of a hydraulic cylinder.

Background

The existing hydraulic cylinder is connected with external equipment through a connecting ring of a piston rod, when the hydraulic cylinder is in operation, the external equipment can be moved through the connecting ring, so that vibration generated by the external equipment in operation can be transmitted to a piston rod through the connecting ring, the piston rod is driven to vibrate, the piston rod can be deformed easily through severe vibration for a long time, and the piston rod cannot be normally used.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a damping device for a piston rod of a hydraulic cylinder, which solves the problem that the piston rod cannot be normally used due to the phenomenon that the piston rod deforms under vibration caused by vibration generated when the hydraulic cylinder runs through an external device of a connecting ring.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a damping device for hydraulic cylinder piston rod, includes hydraulic cylinder main part and sliding connection at the piston rod of hydraulic cylinder main part internal surface, the one end fixedly connected with fixed block of piston rod, the top fixedly connected with protection box of fixed block, the top internal surface sliding connection of protection box has the connecting block, the top fixedly connected with first blotter of connecting block, the top fixedly connected with go-between of first blotter, the inside of protection box is equipped with the buffer structure that carries out shock attenuation protection to the piston rod.

Preferably, the buffer structure comprises a second buffer pad fixedly connected above the surface of the protection box, the top end of the second buffer pad is fixedly connected with a connecting plate, two sliding connection blocks are arranged on the inner surfaces of the front ends of the connecting plate, two driving rods are connected with the front ends of the sliding blocks in a rotating mode, one sides of the two sliding blocks are fixedly connected with first springs, and one ends of the two first springs are fixedly connected with the inner wall of the connecting plate.

Preferably, the inner surfaces of the driving rods are both slidably connected with limiting columns, one ends of the limiting columns are both fixedly connected with limiting blocks, and the outer surfaces of the limiting blocks are both slidably connected with the inner surfaces of the top ends of the connecting plates.

Preferably, the bottom ends of the two limiting blocks are fixedly connected with second springs, one ends of the two second springs are fixedly connected with the inner surface of the connecting plate, and one ends of the two driving rods are rotatably connected with connecting shafts.

Preferably, one end fixedly connected with drive block of connecting axle, the internal surface sliding connection of drive block has the slide bar, the equal fixedly connected with limiting plate in surface both ends of slide bar, and two the one end of limiting plate all with the bottom fixed connection of connecting block.

Preferably, a third spring is fixedly connected between the driving block and the opposite side of the limiting plate, and the third spring is sleeved on the outer surface of the sliding rod.

Advantageous effects

The utility model provides a damping device for a piston rod of a hydraulic cylinder. Compared with the prior art, the method has the following beneficial effects:

this damping device for hydraulic cylinder piston rod through setting up buffer structure, when the vibration force passes through the go-between and transmits for the piston rod, the go-between then drives the connecting block through the first blotter of cooperation and slides at the internal surface of protection box, the connecting block drives two stopper cooperation slide bars and drives two drive blocks and move down this moment, the drive block then drives two drive bars cooperation slider extrusion first spring and makes its shrink, it slides at the internal surface of connecting plate to drive spacing post cooperation stopper simultaneously, make its extrusion second spring make its shrink, thereby alleviate the vibration force, drive connecting block cooperation second blotter later, alleviate the vibration force again, thereby protect the piston rod, make it can be more permanent carry out work.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a front view of a cushioning structure of the present utility model;

fig. 3 is a front view of a partial structure of the present utility model.

In the figure: 1. a hydraulic cylinder main body; 2. a piston rod; 3. a fixed block; 4. a protective case; 5. a connecting block; 6. a first cushion pad; 7. a connecting ring; 8. a buffer structure; 801. a second cushion pad; 802. a connecting plate; 803. a slide block; 804. a driving rod; 805. a first spring; 806. a limit column; 807. a limiting block; 808. a second spring; 809. a connecting shaft; 810. a driving block; 811. a slide bar; 812. a limiting plate; 813. and a third spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides two technical schemes:

embodiment one: the damping device for the hydraulic cylinder piston rod comprises a hydraulic cylinder main body 1 and a piston rod 2 which is slidably connected to the inner surface of the hydraulic cylinder main body 1, wherein the hydraulic cylinder main body 1 and the piston rod 2 are both in the prior art, one end of the piston rod 2 is fixedly connected with a fixed block 3, the top end of the fixed block 3 is fixedly connected with a protection box 4, the protection box 4 is used for protecting an internal buffer part, the inner surface of the top end of the protection box 4 is slidably connected with a connecting block 5, the top end of the protection box 4 is provided with an open slot in a penetrating way, the open slot is matched with the connecting block 5, the top end of the connecting block 5 is fixedly connected with a first buffer cushion 6, the first buffer 6 is in the prior art and is used for relieving the received force, the top end of the first buffer cushion 6 is fixedly connected with a connecting ring 7, the inside of the protection box 4 is provided with a buffer structure 8 which is used for damping and protecting the piston rod 2, the buffer structure 8 is used for relieving the shock force suffered by the piston rod 2, the piston rod 2 is conveniently and better protected, the buffer structure 8 comprises a second buffer cushion 801 fixedly connected above the surface of the protection box 4, the second buffer cushion 801 is in the prior art and is used for relieving the force, the top end of the second buffer cushion 801 is fixedly connected with a connecting plate 802, two inner surfaces of the front end of the connecting plate 802 are both in sliding connection with sliding blocks 803, four sliding grooves are formed in the front end of the connecting plate 802, the inner surfaces of each sliding groove are both in sliding connection with the sliding blocks 803, the front ends of the two sliding blocks 803 are both in rotating connection with driving rods 804, the front ends of the four sliding blocks 803 are both in rotating connection with driving rods 804, one end of each two driving rods 804 is both connected with a driving block 810 through a connecting shaft 809, one side of each two sliding blocks 803 is both fixedly connected with a first spring 805, one side of each sliding block 803 is both fixedly connected with a first spring 805, the elastic coefficients of the first springs 805 are set according to the required values, the sliding blocks 803 are subjected to limit buffering, meanwhile, the vibration force received by the sliding blocks 803 is relieved, one ends of the two first springs 805 are fixedly connected with the inner wall of the connecting plate 802, the inner surfaces of the two driving rods 804 are respectively connected with limit posts 806 in a sliding manner, the inner surfaces of the four driving rods 804 are respectively provided with a sliding groove in a penetrating manner, the sliding grooves are matched with the limit posts 806, one ends of the two limit posts 806 are respectively fixedly connected with the limit blocks 807, the outer surfaces of the two limit blocks 807 are respectively connected with the inner surface of the top end of the connecting plate 802 in a sliding manner, the top end of the connecting plate 802 is provided with an opening groove, the opening groove is matched with the limit blocks 807, the bottom ends of the two limit blocks 807 are respectively fixedly connected with a second spring 808, the elastic coefficients of the second springs 808 are set according to the required values, the limit buffering effect is achieved on the limit blocks 807, and the vibration force received by the second springs 808 are relieved, and one end of each of the two second springs 808 is fixedly connected with the inner surface of the connecting plate 802, one end of each of the two driving rods 804 is rotatably connected with a connecting shaft 809, one end of the connecting shaft 809 is fixedly connected with a driving block 810, the driving block 810 is provided with two, one end of each of the four driving rods 804 is connected with one driving block 810 through the connecting shaft 809, the inner surface of the driving block 810 is slidably connected with a sliding rod 811, both ends of the outer surface of the sliding rod 811 are fixedly connected with a limiting plate 812, the limiting plate 812 plays a supporting and limiting role on the sliding rod 811, one end of each of the two limiting plates 812 is fixedly connected with the bottom end of the connecting block 5, a third spring 813 is fixedly connected between the driving block 810 and the opposite side of the limiting plate 812, the elastic coefficient of the third spring 813 is set according to a required numerical value, the limiting effect is played on the driving block 810, and the third spring 813 is sleeved on the outer surface of the sliding rod 811, under the action of vibration force, the connecting ring 7 pushes the connecting block 5 to slide on the inner surface of the protection box 4 through the first buffer pad 6, so that the connecting block 5 drives the sliding rod 811 and the driving block 810 to move downwards through the limiting plate 812, so that the driving block 810 drives the two driving rods 804 to move downwards through the connecting shaft 809, one end of the driving rod 804 drives the sliding block 803 to slide on the inner surface of the connecting plate 802, so as to squeeze the first spring 805, thereby relieving vibration force, meanwhile, the driving rod 804 drives the limiting column 806 to slide on the inner surface of the driving rod 806, and meanwhile, the limiting column 806 drives the limiting block 807 to move downwards, so that the limiting block 807 slides on the inner surface of the connecting plate 802, so as to squeeze the second spring 808, thereby relieving vibration force again, and then the vibration force relieved through the first spring 805 and the second spring 808 is finally relieved through the second buffer pad 801, so that the vibration force is relieved for a plurality of times, and the piston rod 2 is protected better, so that the piston rod 2 can work for a long time.

Embodiment two: the damping device for the hydraulic cylinder piston rod comprises a damping structure 8 for damping and protecting the piston rod 2, wherein the damping structure 8 is arranged in a protection box 4, the damping structure 8 is used for relieving the vibration force suffered by the piston rod 2 and protecting the piston rod 2 conveniently and better, the damping structure 8 comprises a second buffer cushion 801 fixedly connected above the surface of the protection box 4, the second buffer cushion 801 is the prior known technology and is used for relieving the force suffered by the piston rod, the top end of the second buffer cushion 801 is fixedly connected with a connecting plate 802, the inner surfaces of the front ends of the connecting plate 802 are both slidingly connected with sliding blocks 803, the front ends of the connecting plate 802 are both provided with four sliding grooves, the inner surfaces of each sliding groove are both slidingly connected with sliding blocks 803, the front ends of the two sliding blocks 803 are both rotationally connected with a driving rod 804, the front ends of the four sliding blocks are both rotationally connected with the driving rod 804, one end of each two driving rods 804 is connected with the driving block 810 through a connecting shaft 809, one sides of the two sliding blocks 803 are fixedly connected with first springs 805, one sides of the four sliding blocks 803 are fixedly connected with first springs 805, the elastic coefficient of the first springs 805 is set according to a required value, the sliding blocks 803 are limited and buffered, meanwhile, the shock force is relieved, one ends of the two first springs 805 are fixedly connected with the inner wall of the connecting plate 802, the inner surfaces of the two driving rods 804 are slidably connected with limiting columns 806, the inner surfaces of the four driving rods 804 are provided with sliding grooves in a penetrating way, the sliding grooves are matched with the limiting columns 806, one ends of the two limiting columns 806 are fixedly connected with limiting blocks 807, the outer surfaces of the two limiting blocks 807 are slidably connected with the inner surfaces of the top ends of the connecting plate 802, the top ends of the connecting plate 802 are provided with open grooves, the open grooves are matched with the limiting blocks 807, the bottom ends of the two limiting blocks 807 are fixedly connected with second springs 808, the elastic coefficients of the second springs 808 are set according to required values, limiting and buffering effects are achieved on the limiting blocks 807, meanwhile, the vibration force suffered by the limiting blocks is relieved, one ends of the two second springs 808 are fixedly connected with the inner surface of the connecting plate 802, one ends of the two driving rods 804 are rotatably connected with connecting shafts 809, one ends of the connecting shafts 809 are fixedly connected with driving blocks 810, the driving blocks 810 are provided with two driving rods 804, one ends of each two driving rods 804 of the four driving rods 804 are connected with one driving block 810 through the connecting shafts 809, the inner surface of the driving block 810 is slidably connected with a sliding rod 811, limiting plates 812 are fixedly connected with two ends of the outer surface of the sliding rod 811, the limiting plates 812 support and limit the sliding rod 811, one ends of the two limiting plates 812 are fixedly connected with the bottom ends of the connecting block 5, a third spring 813 is fixedly connected between the opposite sides of the driving block 810 and the limiting plate 812, the elastic coefficient of the third spring 813 is set according to a required value, the driving block 810 is limited, the third spring 813 is sleeved on the outer surface of the sliding rod 811, under the action of vibration force, the connecting ring 7 pushes the connecting block 5 to slide on the inner surface of the protection box 4 through the first buffer pad 6, so that the connecting block 5 drives the sliding rod 811 and the driving block 810 to move downwards through the limiting plate 812, the driving block 810 drives the two driving rods 804 to move downwards through the connecting shaft 809, one end of the driving rod 804 drives the sliding block 803 to slide on the inner surface of the connecting plate 802, the first spring 805 is extruded, the vibration force is relieved, the driving rod 804 drives the limiting post 806 to slide on the inner surface, the limiting post 807 moves downwards, the limiting block 807 slides on the inner surface of the connecting plate 802, thereby squeeze second spring 808, thereby alleviate again the vibrations force, then alleviate the vibration force after passing through first spring 805 and second spring 808 and then carry out final release through second blotter 801, thereby alleviate the buffering to vibrations force many times to better protect piston rod 2, make it can work with the permanent.

And all that is not described in detail in this specification is well known to those skilled in the art.

During operation, when the hydraulic cylinder main body 1 drives the piston rod 2 to drive the connected external equipment through the connecting ring 7, at this moment, the vibration force generated by the external equipment under the action of the force returns to the piston rod 2 through the connecting ring 7, at this moment, the vibration force then carries out primary relief on the first buffer pad 6, then the connecting block 5 is driven to slide on the inner surface of the protection box 4 under the action of the vibration force, the limiting plates 812 on two sides of the bottom end drive the sliding rod 811 to move downwards while sliding, thereby driving the driving block 810 to rotate while moving downwards under the limiting action of the third spring 813, thereby enabling one ends of the two driving rods 804 to drive the sliding block 803 to slide on the inner surface of the connecting plate 802, and further extruding the first spring 805, thereby enabling the first spring 805 to shrink, thereby buffering the vibration force again, and simultaneously driving the limiting columns 806 to slide on the inner surface of the driving rod 804, and simultaneously driving the limiting blocks 807 to slide on the inner surface of the connecting plate 802, and simultaneously extruding the second spring 808 to shrink, thereby releasing the vibration force again, and then enabling the sliding block 803 to not to slide on the inner surface of the connecting plate 802, thereby enabling the vibration force to be transferred to the piston rod 2, and finally, the vibration force can be relieved, and the vibration force can be transferred to the piston rod 2 for a long time.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a damping device for hydraulic cylinder piston rod, includes hydraulic cylinder main part (1) and sliding connection at piston rod (2) of hydraulic cylinder main part (1) internal surface, its characterized in that: one end fixedly connected with fixed block (3) of piston rod (2), the top fixedly connected with protection box (4) of fixed block (3), the top internal surface sliding connection of protection box (4) has connecting block (5), the top fixedly connected with first blotter (6) of connecting block (5), the top fixedly connected with go-between (7) of first blotter (6), the inside of protection box (4) is equipped with buffer structure (8) that carry out shock attenuation protection to piston rod (2).

2. The shock absorbing device for a hydraulic cylinder piston rod according to claim 1, wherein: buffer structure (8) are including second blotter (801) of fixed connection in protection box (4) surface top, the top fixedly connected with connecting plate (802) of second blotter (801), two equal sliding connection of front end internal surface of connecting plate (802) have slider (803), two the front end of slider (803) all rotates and is connected with actuating lever (804), one side of two sliders (803) all fixedly connected with first spring (805), and two the one end of first spring (805) all is with the inner wall fixed connection of connecting plate (802).

3. The shock absorbing device for a hydraulic cylinder piston rod according to claim 2, wherein: the inner surfaces of the driving rods (804) are both connected with limiting columns (806) in a sliding mode, one ends of the limiting columns (806) are both fixedly connected with limiting blocks (807), and the outer surfaces of the limiting blocks (807) are both connected with the inner surfaces of the top ends of the connecting plates (802) in a sliding mode.

4. A shock absorber for a hydraulic ram piston rod as defined in claim 3, wherein: the bottom ends of the two limiting blocks (807) are fixedly connected with second springs (808), one ends of the two second springs (808) are fixedly connected with the inner surface of the connecting plate (802), and one ends of the two driving rods (804) are rotatably connected with connecting shafts (809).

5. The shock absorbing device for a hydraulic cylinder piston rod according to claim 4, wherein: one end fixedly connected with drive block (810) of connecting axle (809), the internal surface sliding connection of drive block (810) has slide bar (811), the surface both ends of slide bar (811) are all fixedly connected with limiting plate (812), and two the one end of limiting plate (812) all is connected with the bottom fixed of connecting block (5).

6. The shock absorbing device for a hydraulic cylinder piston rod according to claim 5, wherein: a third spring (813) is fixedly connected between the driving block (810) and the opposite side of the limiting plate (812), and the third spring (813) is sleeved on the outer surface of the sliding rod (811).

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