CN215634094U

CN215634094U - Welding seam stress concentration structure is dodged in welding of hydraulic cylinder head

Info

Publication number: CN215634094U
Application number: CN202121683082.6U
Authority: CN
Inventors: 钟达林; 赖惠海; 蔡禄高; 谢政铨
Original assignee: Longgong Fujian Hydraulic Co ltd
Current assignee: Longgong Fujian Hydraulic Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-25
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to the technical field of welding of a cylinder head of a hydraulic cylinder, in particular to a stress concentration structure for avoiding welding and avoiding a weld joint of the cylinder head of the hydraulic cylinder. The technical scheme comprises the following steps: the cylinder body and be located the piston rod in the cylinder body, the cylinder body includes the bottom connector that cylinder bottom and cylinder bottom were equipped with, the piston rod is including the piston that is located bottom connector department, the inner wall both sides of cylinder body all are fixed with buffer gear through the screw, be equipped with in the buffer gear with piston rod fixed connection's buffering post, be equipped with the interior grooving mechanism that two symmetries set up in the connector of bottom. The utility model can better bear stress through the arrangement, thereby protecting the welding seam from being broken safely.

Description

Welding seam stress concentration structure is dodged in welding of hydraulic cylinder head

Technical Field

The utility model relates to the technical field of welding of a cylinder head of a hydraulic cylinder, in particular to a stress concentration structure for avoiding welding and avoiding a weld joint of the cylinder head of the hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary. The existing hydraulic cylinder head welding line is mostly provided with grooves for preventing welding line cracking caused by stress concentration, but the existing grooves are not uniformly stressed and lack of a buffer damping device, and a good protection effect cannot be achieved for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic oil cylinder head capable of avoiding weld joint stress aiming at the problems in the background technology.

The technical scheme of the utility model is as follows: welding dodges welding seam stress concentration structure is dodged to hydraulic cylinder head, including cylinder body and the piston rod that is located the cylinder body, the cylinder body includes the bottom connector that cylinder bottom and cylinder bottom were equipped with, the piston rod is including the piston that is located bottom connector department, the inner wall both sides of cylinder body all are fixed with buffer gear through the screw, be equipped with in the buffer gear with piston rod fixed connection's buffering post, be equipped with the interior grooving mechanism that two symmetries set up in the bottom connector.

Preferably, interior groover mechanism is including offering the interior groover on the cylinder bottom and the bottom connector, interior groover mechanism still include with the integrative casting's of bottom connector bearing block, the mounting groove with interior groover intercommunication is seted up to the bearing block, the embedded spring that is equipped with of mounting groove, interior groover mechanism still includes the fixed steel ball of spring, the steel ball is located interior groover.

Preferably, an auxiliary spring is embedded in the buffer mechanism, one end of the buffer column is fixedly connected with the auxiliary spring, and the other end of the buffer column is fixedly connected with the piston rod.

Preferably, the two damping mechanisms are respectively located at two sides of the piston.

Preferably, the buffer mechanism is fixed with an elastic member penetrated by the buffer column.

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

1. through the setting of bottom connector, change traditional groover into, when the piston removed, on the steel ball was contradicted to the piston, the effect that reduces stress was played in the shrink through the spring to better letting out stress, and because two interior groover mechanism symmetries set up and make whole atress even.

2. Through the setting of buffer gear, when the piston rod removed, can extrude auxiliary spring through the buffering post, played the effect of buffering, made the piston production stress reduction indirectly.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of the bottom connector shown in FIG. 1;

fig. 3 is a schematic structural diagram of the buffering mechanism in fig. 2.

Reference numerals: 1. a cylinder body; 2. a cylinder bottom; 3. a bottom connector; 4. a piston rod; 5. a piston; 6. a buffer mechanism; 7. an inner grooving mechanism; 8. a bearing block; 9. steel balls; 10. a spring; 11. mounting grooves; 12. an auxiliary spring; 13. a buffer column; 14. an elastic member; 15. a screw; 16. and (6) digging a groove in the inner part.

Detailed Description

The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.

Example one

Referring to the attached

drawings

1 and 2, the hydraulic cylinder head avoiding, welding and avoiding weld stress concentration structure comprises a cylinder body 1 and a piston rod 4 positioned in the cylinder body 1, the cylinder body 1 comprises a cylinder bottom 2 and a bottom connector 3 arranged on the cylinder bottom 2, the piston rod 4 comprises a piston 5 positioned at the bottom connector 3, two sides of the inner wall of the cylinder body 1 are both fixed with a buffer mechanism 6 through screws 15, a buffer column 13 fixedly connected with the piston rod 4 is arranged in the buffer mechanism 6, two inner groover mechanisms 7 symmetrically arranged are arranged in the bottom connector 3, the effect of uniform integral stress is achieved through the symmetry in the embodiment, each inner groover mechanism 7 comprises inner groves 16 arranged on the cylinder bottom 2 and the bottom connector 3, each inner groover mechanism 7 further comprises a bearing block 8 integrally cast with the bottom connector 3, and the bearing block 8 is used for increasing the bearing stress with better wall thickness, bearing block 8 is seted up the mounting groove 11 with interior digging groove 16 intercommunication, and the spring 10 is equipped with to the embedding in mounting groove 11, and interior digging mechanism 7 still includes the fixed steel ball 9 of spring 10, and steel ball 9 is located interior digging groove 16.

The working principle of the hydraulic cylinder head avoidance welding avoidance weld joint stress concentration structure based on the first embodiment is as follows: when using, piston rod 4 can be at 1 internal motion of cylinder body, piston rod 4 can drive piston 5 and move together, piston 5 can be toward 3 departments of bottom connector motion, setting through bottom connector 3, change traditional grooving into 16, when piston 5 removes, on piston 5 contradicts steel ball 9, piston 5's thrust can make steel ball 9 toward the mounting groove 11 removal, thereby make spring 10 shrink and play the effect that reduces stress, thereby better letting out stress, and because two interior groover mechanisms 7 symmetry sets up and makes whole atress even.

Example two

Referring to fig. 3, based on the first embodiment, an auxiliary spring 12 is embedded in the buffer mechanism 6, one end of a buffer column 13 is fixedly connected to the auxiliary spring 12, the other end of the buffer column 13 is fixedly connected to the piston rod 4, the two buffer mechanisms 6 are respectively located at two sides of the piston 5, and an elastic member 14 penetrated by the buffer column 13 is fixed to the buffer mechanisms 6 and is a rubber pad.

In this embodiment, when the piston rod 4 moves, the piston rod 4 can drive the buffer column 13 to move together, so that the buffer column 13 can extrude the auxiliary spring 12, thereby achieving the buffering effect, and when the force of the piston rod 4 is reduced, the piston 5 is indirectly enabled to generate stress to be reduced.

The above embodiments are merely some preferred embodiments of the present invention, and those skilled in the art can make various alternative modifications and combinations of the above embodiments based on the technical solution of the present invention and the related teaching of the above embodiments.

Claims

1. Welding dodges welding seam stress concentration structure is dodged to hydraulic cylinder head, include cylinder body (1) and be located piston rod (4) of cylinder body (1), bottom connector (3) that cylinder body (1) were equipped with including cylinder end (2) and cylinder end (2), piston rod (4) are including piston (5) that are located bottom connector (3) department, its characterized in that: the inner wall both sides of cylinder body (1) all are fixed with buffer gear (6) through screw (15), be equipped with in buffer gear (6) with piston rod (4) fixed connection's buffering post (13), be equipped with two interior grooving mechanism (7) that the symmetry set up in bottom connector (3).

2. The hydraulic cylinder head avoiding welding avoiding weld joint stress concentration structure as claimed in claim 1, wherein the inner grooving mechanism (7) comprises inner grooves (16) formed in a cylinder bottom (2) and a bottom connector (3), the inner grooving mechanism (7) further comprises a bearing block (8) integrally cast with the bottom connector (3), the bearing block (8) is provided with a mounting groove (11) communicated with the inner grooving (16), a spring (10) is embedded in the mounting groove (11), the inner grooving mechanism (7) further comprises a steel ball (9) fixed by the spring (10), and the steel ball (9) is located in the inner grooving (16).

3. The hydraulic cylinder head avoiding welding avoiding weld joint stress concentration structure of the claim 1 or 2, characterized in that an auxiliary spring (12) is embedded in the buffer mechanism (6), one end of the buffer column (13) is fixedly connected with the auxiliary spring (12), and the other end of the buffer column (13) is fixedly connected with the piston rod (4).

4. The hydraulic cylinder head avoiding welding avoiding weld joint stress concentration structure as claimed in claim 3, wherein the two buffering mechanisms (6) are respectively located on two sides of the piston (5).

5. The hydraulic cylinder head avoiding welding avoiding weld joint stress concentration structure as claimed in claim 1, wherein an elastic part (14) penetrated by the buffer column (13) is fixed on the buffer mechanism (6).