CN214533789U

CN214533789U - Hydraulic cylinder with cylinder bottom buffer structure

Info

Publication number: CN214533789U
Application number: CN202120253214.5U
Authority: CN
Inventors: 张林群; 黄清文
Original assignee: Fujian Longyan Tianzheng Hydraulic Machinery Manufacturing Co ltd
Current assignee: Fujian Longyan Tianzheng Hydraulic Machinery Manufacturing Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-10-29
Anticipated expiration: 2031-01-30

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with a cylinder bottom buffer structure, which comprises a cylinder barrel and a lower ear ring, wherein the bottom end of the cylinder barrel is fixedly connected with the lower ear ring, the inner side of the rear end of the cylinder barrel is provided with an oil port, the inner side of the top end of the cylinder barrel is slidably connected with a piston rod, the upper ear ring drives the piston rod to move downwards and pushes hydraulic oil to generate impact on the cylinder bottom under the limit of the sliding connection of the cylinder barrel and the piston rod, simultaneously, a connecting block drives the sliding rod to slide downwards under the limit of the sliding connection of the sliding rod and a sleeve, and ensures the stable movement of the piston rod, the spring compression simultaneously avoids the quick movement of the piston rod, avoids the hydraulic oil from being rapidly pushed to generate larger impact force on the cylinder bottom, when the piston rod is in the later stage, the spring is reset to push the piston rod upwards to be matched with the hydraulic oil, avoids more power loss to push the piston rod, the reliable protection of the cylinder bottom is realized, and the practicability of the device is improved.

Description

Hydraulic cylinder with cylinder bottom buffer structure

Technical Field

The utility model relates to a hydraulic cylinder technical field specifically is a hydraulic cylinder with cylinder bottom buffer structure.

Background

The hydraulic cylinder is divided into four types, namely a piston type hydraulic cylinder, a plunger type hydraulic cylinder, a telescopic hydraulic cylinder and a swing type hydraulic cylinder according to the structural form of the common hydraulic cylinder, converts hydraulic energy into mechanical energy in the whole hydraulic process, and can be divided into three types, namely light pressure, medium pressure and heavy pressure according to the range of the use pressure.

When the piston rod moves rapidly in the use process of the hydraulic oil cylinder, hydraulic oil can generate huge impact force on the cylinder bottom, the cylinder barrel is damaged, the service life of the hydraulic oil cylinder is shortened, and meanwhile, power needs to be additionally provided in the follow-up piston rod reset process to push the piston rod to reset through the hydraulic oil, so that energy loss is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic cylinder with cylinder bottom buffer structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a hydraulic cylinder with a cylinder bottom buffering structure comprises a cylinder barrel and a lower lug ring, wherein the bottom end of the cylinder barrel is fixedly connected with the lower lug ring, the inner side of the rear end of the cylinder barrel is provided with an oil port, the inner side of the top end of the cylinder barrel is slidably connected with a piston rod, the top end of the piston rod is fixedly connected with a connecting block, the top end of the connecting block is fixedly connected with an upper lug ring, the left end and the right end of the cylinder barrel are both fixedly connected with a fixed block, the top end of the fixed block is fixedly connected with a sleeve, the top end of the sleeve is fixedly connected with a second clamping block, the inner side of the sleeve is provided with a sliding groove, the inner side of the sleeve is slidably connected with a sliding rod, the top end of the connecting block is provided with a first clamping block, the nut and the first clamping block are both in threaded connection with the sliding rod, and the inner side of the bottom end of the first clamping block and the inner side of the top end of the second clamping block are both provided with clamping grooves, the outside of slide bar is provided with the spring, and the tip of spring respectively with first fixture block and second fixture block, the one end fixedly connected with stopper of slide bar.

Preferably, the spring is clamped with the first clamping block and the second clamping block through clamping grooves respectively, and the sliding rod is connected with the sleeve in a sliding mode through a sliding groove.

Preferably, the cross section of the bottom of the sliding rod is rectangular, and the outer side of the top end of the sliding rod is provided with threads.

Preferably, the number of the springs is two, and the springs are symmetrical left and right about a vertical bisector of the cylinder barrel.

Preferably, an inner thread is provided on an inner side of the first latch.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the cylinder bottom can be buffered by the arranged spring, the sliding rod, the sliding groove, the sleeve and the fixed block, the hydraulic oil is prevented from being violently impacted when the piston rod moves rapidly, the piston rod can be assisted to reset, the upper ear ring drives the piston rod to move downwards and pushes the hydraulic oil to impact the cylinder bottom under the limit of the sliding connection of the cylinder barrel and the piston rod, the connecting block drives the sliding rod to slide downwards under the limit of the sliding connection of the sliding rod and the sleeve, the stable movement of the piston rod is ensured, the spring compression simultaneously prevents the piston rod from moving rapidly, the hydraulic oil is prevented from generating larger impact force to the cylinder bottom by rapid pushing, when the piston rod moves upwards, the spring reset is used for pushing the piston rod upwards by the hydraulic oil, more power is prevented from being lost to push the piston rod, and the reliable protection of the cylinder bottom is realized, increasing the practicality of the device.

2. The utility model discloses in, nut through setting up, first fixture block, the second fixture block, spring and stopper, can carry out convenient change to the spring, guarantee that the spring is to the reliable buffering of hydraulic cylinder during operation, after unscrewing the nut of connecting block top, downwards pulling slide bar withdraws from the connecting block until the slide bar, unscrew the slide bar with first fixture block, take off the inboard spring of second fixture block draw-in groove and change can, the spring both ends card that will change are gone into respectively first fixture block and the inboard draw-in groove of second fixture block, slide bar in the convenient rotation of first fixture block through first fixture block and slide bar screwed connection, and with the slide bar insert the nut after the connecting block slide bar can on rotating, realize the convenient change of spring, thereby guarantee hydraulic cylinder's real-time protection, increase device's practicality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a schematic structural diagram of the point B in fig. 1 according to the present invention.

In the figure: 1-cylinder barrel, 2-lower lug, 3-upper lug, 4-piston rod, 5-chute, 6-oil port, 7-fixed block, 8-nut, 9-connecting block, 10-first clamping block, 11-clamping groove, 12-spring, 13-sliding rod, 14-second clamping block, 15-sleeve and 16-limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a hydraulic cylinder with a cylinder bottom buffer structure comprises a cylinder barrel 1 and a lower lug ring 2, the bottom end of the cylinder barrel 1 is fixedly connected with the lower lug ring 2, the inner side of the rear end of the cylinder barrel 1 is provided with an oil port 6, the inner side of the top end of the cylinder barrel 1 is slidably connected with a piston rod 4, the top end of the piston rod 4 is fixedly connected with a connecting block 9, the top end of the connecting block 9 is fixedly connected with an upper lug ring 3, the left end and the right end of the cylinder barrel 1 are fixedly connected with a fixed block 7, the top end of the fixed block 7 is fixedly connected with a sleeve 15, the top end of the sleeve 15 is fixedly connected with a second clamping block 14, the inner side of the sleeve 15 is provided with a sliding chute 5, the inner side of the sleeve 15 is slidably connected with a sliding rod 13, the top end of the connecting block 9 is provided with a nut 8, the bottom end of the connecting block 9 is provided with a first clamping block 10, the nut 8 and the first clamping block 10 are both in threaded connection with the sliding rod 13, the inner side of the bottom end of the first clamping block 10 and the inner side of the second clamping block 14 are both provided with a clamping groove 11, the outside of slide bar 13 is provided with spring 12, and the tip of spring 12 respectively with first fixture block 10 and the 14 block of second fixture block, the one end fixedly connected with stopper 16 of slide bar 13, stopper 16 avoids slide bar 13 to slide into sleeve 15 in the use, connecting block 9 is reliably fixed slide bar 13 under the cooperation of nut 8 and first fixture block 10 and slide bar 13 threaded connection, second fixture block 14 and the cooperation of first fixture block 10 are reliably spacing to spring 12, sleeve 15 guarantees the steady slip of slide bar 13, thereby guide once more to the removal of piston rod 4.

The spring 12 is clamped with the first clamping block 10 and the second clamping block 14 through the clamping groove 11 respectively, the sliding rod 13 is connected with the sleeve 15 in a sliding mode through the sliding groove 5, and the spring 12 is guaranteed to be well fixed in the using process; the cross section of the bottom of the sliding rod 13 is rectangular, the outer side of the top end of the sliding rod 13 is provided with threads, the sliding rod 13 with the rectangular cross section ensures the sleeve 15 of the sliding rod 13 to stably slide in the using process, so that the piston rod 4 is ensured to stably move, and the threads are arranged on the outer side of the sliding rod 13 to ensure the reliable connection with the nut 8 and the first fixture block 10; the number of the springs 12 is two, the springs are bilaterally symmetrical about a vertical bisector of the cylinder barrel 1, the piston rod 4 is guaranteed to buffer when moving downwards in the using process, and the springs 12 are reset to push the piston rod to move when moving upwards; the inner side of the first clamping block 10 is provided with an internal thread, so that the first clamping block 10 and the nut 8 are respectively and spirally connected with the sliding rod 13 in the use process to reliably fix the sliding rod 13 under the matching of the connecting block 9.

The working process is as follows: the utility model can buffer the cylinder bottom and avoid the piston rod 4 from violently impacting the cylinder bottom when rapidly moving, and can assist the piston rod 4 to reset, under the limit of the sliding connection between the cylinder barrel 1 and the piston rod 4, the upper ear ring 3 drives the piston rod 4 to move downwards and pushes the hydraulic oil to impact the cylinder bottom, the connecting block 9 drives the sliding rod 13 to slide downwards under the limit of the sliding connection between the sliding rod 13 and the sleeve 15, and ensures the stable movement of the piston rod 4, the spring 12 compresses and simultaneously avoids the rapid movement of the piston rod 4, avoids the hydraulic oil from being rapidly pushed to generate larger impact force on the cylinder bottom, when the piston rod 4 moves upwards in the later period, the spring 12 resets and pushes the piston rod 4 upwards by the hydraulic oil to cooperate, avoids more power consumption to push the piston rod 4 by the hydraulic oil, realizes the reliable protection of the cylinder bottom, the spring 12 can be conveniently replaced and ensures the reliable buffering of the hydraulic oil when the spring 12 works, after the nut 8 above the connecting block 9 is screwed down, the sliding rod 13 is pulled downwards until the sliding rod 13 exits from the connecting block 9, the sliding rod 13 is screwed down from the first clamping block 10, the spring 12 on the inner side of the clamping groove 11 of the second clamping block 14 is taken down and replaced, the two ends of the replaced spring 12 are respectively clamped into the clamping grooves 11 on the inner sides of the first clamping block 10 and the second clamping block 14, the sliding rod 13 is conveniently screwed on the first clamping block 10 through the screw connection of the first clamping block 10 and the sliding rod 13, the sliding rod 13 is inserted into the connecting block 9, and then the nut 8 is screwed on the sliding rod 13, so that the convenient replacement of the spring 12 is realized.

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

Claims

1. The utility model provides a hydraulic cylinder with cylinder bottom buffer structure, includes cylinder (1) and lower earrings (2), its characterized in that: the bottom end of the cylinder barrel (1) is fixedly connected with a lower lug ring (2), the inner side of the rear end of the cylinder barrel (1) is provided with an oil port (6), the inner side of the top end of the cylinder barrel (1) is slidably connected with a piston rod (4), the top end of the piston rod (4) is fixedly connected with a connecting block (9), the top end of the connecting block (9) is fixedly connected with an upper lug ring (3), the left end and the right end of the cylinder barrel (1) are fixedly connected with fixed blocks (7), the top end of the fixed block (7) is fixedly connected with a sleeve (15), the top end of the sleeve (15) is fixedly connected with a second clamping block (14), the inner side of the sleeve (15) is provided with a sliding chute (5), the inner side of the sleeve (15) is slidably connected with a sliding rod (13), the top end of the connecting block (9) is provided with a nut (8), and the bottom end of the connecting block (9) is provided with a first clamping block (10), and nut (8) and first fixture block (10) all with slide bar (13) threaded connection, the bottom inboard of first fixture block (10) and the top inboard of second fixture block (14) all are provided with draw-in groove (11), the outside of slide bar (13) is provided with spring (12), and the tip of spring (12) respectively with first fixture block (10) and second fixture block (14) block, the one end fixedly connected with stopper (16) of slide bar (13).

2. The hydraulic oil cylinder with the cylinder bottom buffering structure as claimed in claim 1, characterized in that: the spring (12) is clamped with the first clamping block (10) and the second clamping block (14) through the clamping groove (11), and the sliding rod (13) is connected with the sleeve (15) in a sliding mode through the sliding groove (5).

3. The hydraulic oil cylinder with the cylinder bottom buffering structure as claimed in claim 1, characterized in that: the cross section of the bottom of the sliding rod (13) is rectangular, and threads are arranged on the outer side of the top end of the sliding rod.

4. The hydraulic oil cylinder with the cylinder bottom buffering structure as claimed in claim 1, characterized in that: the number of the springs (12) is two, and the springs are symmetrical left and right about a vertical bisector of the cylinder barrel (1).

5. The hydraulic oil cylinder with the cylinder bottom buffering structure as claimed in claim 1, characterized in that: the inner side of the first clamping block (10) is provided with an internal thread.