阅读说明：本技术 二级行程可调的液压油缸 (Hydraulic oil cylinder with adjustable secondary stroke ) 是由 姚俊贤 于 2019-10-24 设计创作，主要内容包括：本发明涉及一种二级行程可调的液压油缸,其特征在于在无杆腔中,缸底盖上固定设置有半圆柱形的第一行程垫块,活塞上固定设置有半圆柱形的与第一行程垫块相匹配的第二行程垫块；导杆夹通过螺钉固定设置在活塞杆的外端,缸体的端部固定设置有导向块,平行于活塞杆的导杆的一端固定连接导杆夹,导杆滑动连接导向块。本发明结构简单紧凑,制造成本低,可方便地实现二级行程可调,方便用户快速实现行程调整,减少操作工人的工作量,同时增加液压油缸的适用范围,满足用户的需求。(The invention relates to a hydraulic oil cylinder with adjustable secondary stroke, which is characterized in that a semi-cylindrical first stroke cushion block is fixedly arranged on a cylinder bottom cover in a rodless cavity, and a semi-cylindrical second stroke cushion block matched with the first stroke cushion block is fixedly arranged on a piston; the guide rod clamp is fixedly arranged at the outer end of the piston rod through a screw, the end part of the cylinder body is fixedly provided with a guide block, one end of the guide rod parallel to the piston rod is fixedly connected with the guide rod clamp, and the guide rod is connected with the guide block in a sliding manner. The invention has simple and compact structure and low manufacturing cost, can conveniently realize the adjustment of the secondary stroke, is convenient for users to quickly realize the stroke adjustment, reduces the workload of operating workers, simultaneously increases the application range of the hydraulic oil cylinder and meets the requirements of the users.)

1. The utility model provides a two-stage stroke adjustable hydraulic cylinder, includes the cylinder body, the both ends of cylinder body are sealed by uide bushing and cylinder bottom lid, and the piston slides and sets up in the cylinder body, the inner of piston rod with piston fixed connection, the outer end of piston rod passes the guide hole of uide bushing outwards stretches out, the piston will the inner chamber of cylinder body divide into has the pole chamber and does not have the pole chamber, its characterized in that: in the rodless cavity, a semi-cylindrical first stroke cushion block is fixedly arranged on the cylinder bottom cover, and a semi-cylindrical second stroke cushion block matched with the first stroke cushion block is fixedly arranged on the piston; the guide rod clamp is fixedly arranged at the outer end of the piston rod through a screw, the end part of the cylinder body is fixedly provided with a guide block, one end of a guide rod parallel to the piston rod is fixedly connected with the guide rod clamp, and the guide rod is connected with the guide block in a sliding mode.

2. A hydraulic cylinder having two-stage adjustable stroke according to claim 1 wherein: the guide rod clamp is in a diamond shape, and guide rod clamp holes and expansion and contraction grooves are symmetrically formed in two sides of the guide rod clamp.

3. A hydraulic cylinder having two-stage adjustable stroke according to claim 1 wherein: the opposite surfaces of the first stroke cushion block and the second stroke cushion block are inclined planes.

4. A hydraulic cylinder having two-stage adjustable stroke according to claim 1 wherein: the front end of the outer end of the piston rod is provided with a ball head, the supporting disc is connected with the spherical surface of the gland, and the bottom cover of the cylinder is provided with a hinge hole.

Technical Field

The invention relates to a hydraulic oil cylinder, in particular to a hydraulic oil cylinder with adjustable two-stage stroke.

Background

The hydraulic cylinder is one of the most common components in various mechanical devices, and is a special equipment assembly which is assembled by a piston rod, a piston, a guide sleeve, a cylinder barrel, a cylinder cover and various seals and can convert hydraulic energy into mechanical energy and perform linear motion. The stroke and the installation position of the hydraulic oil cylinder are usually fixed and unchangeable, and are designed and determined in advance according to needs and cannot be changed, if the stroke needs to be changed, the hydraulic oil cylinder consisting of a piston rod and a cylinder body with different lengths needs to be replaced, the hydraulic oil cylinder is difficult to replace, the workload of operators is increased, great inconvenience is brought to the maintenance and the change of equipment, and the requirements of users are difficult to meet.

Disclosure of Invention

The hydraulic oil cylinder with the adjustable secondary stroke has the advantages that the structure is simple and compact, the manufacturing cost is low, the secondary stroke can be conveniently adjusted, a user can conveniently and quickly adjust the stroke, the workload of an operator is reduced, the application range of the hydraulic oil cylinder is expanded, and the requirements of the user are met.

In order to solve the technical problems, the invention adopts the following technical scheme:

a two-stage stroke-adjustable hydraulic oil cylinder comprises a cylinder body, wherein two ends of the cylinder body are sealed by a guide sleeve and a cylinder bottom cover, a piston is arranged in the cylinder body in a sliding mode, the inner end of a piston rod is fixedly connected with the piston, the outer end of the piston rod penetrates through a guide hole of the guide sleeve and extends outwards, the piston divides an inner cavity of the cylinder body into a rod cavity and a rodless cavity, a semi-cylindrical first stroke cushion block is fixedly arranged on the cylinder bottom cover in the rodless cavity, and a semi-cylindrical second stroke cushion block matched with the first stroke cushion block is fixedly arranged on the piston; the guide rod clamp is fixedly arranged at the outer end of the piston rod through a screw, the end part of the cylinder body is fixedly provided with a guide block, one end of a guide rod parallel to the piston rod is fixedly connected with the guide rod clamp, and the guide rod is connected with the guide block in a sliding mode.

Further:

the guide rod clamp is in a diamond shape, and guide rod clamp holes and expansion and contraction grooves are symmetrically formed in two sides of the guide rod clamp.

The opposite surfaces of the first stroke cushion block and the second stroke cushion block are inclined planes.

The front end of the outer end of the piston rod is provided with a ball head, the supporting disc is connected with the spherical surface of the gland, and the bottom cover of the cylinder is provided with a hinge hole.

The invention has the technical effects that:

the hydraulic oil cylinder with the adjustable secondary stroke disclosed by the invention has the advantages of simple and compact structure and low manufacturing cost, can conveniently realize the adjustment of the secondary stroke, is convenient for users to quickly realize the stroke adjustment, reduces the workload of operators, simultaneously increases the application range of the hydraulic oil cylinder and meets the requirements of the users.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a view taken along direction a of fig. 1.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in figures 1 and 2, the invention comprises a cylinder body 6, two ends of the cylinder body 6 are sealed by a guide sleeve 4 and a cylinder bottom cover 8, a piston 7 is arranged in the cylinder body 6 in a sliding way, the inner end of a piston rod 5 is fixedly connected with the piston 7, the outer end of the piston rod 5 passes through a guide hole of the guide sleeve 4 and extends outwards, the piston 7 divides the inner cavity of the cylinder body 6 into a rod cavity 601 and a rodless cavity 602, the front end of the outer end of the piston rod 5 is provided with a ball head 10, a support disc 1 is connected with the ball head 10 through the spherical surface of a gland 2, the cylinder bottom cover 8 is provided with a hinge hole 801, and the hinge holes 801 on the support disc. In the rodless cavity 602, a semi-cylindrical first stroke cushion block 13 is fixedly arranged on the cylinder bottom cover 8, and a semi-cylindrical second stroke cushion block 12 matched with the first stroke cushion block 13 is fixedly arranged on the piston 7. When the cylinder is in a retracted state, when the first stroke pad 13 and the second stroke pad 12 are located on both sides of the rodless cavity 602 (as in the state of fig. 1), the stroke of the piston rod 5 and the piston 7 is a long stroke, and when the first stroke pad 13 and the second stroke pad 12 are located on the same side of the rodless cavity 602, the first stroke pad 13 abuts against the second stroke pad 12, and the stroke of the piston rod 5 and the piston 7 is a short stroke, in this embodiment, the opposite surfaces of the first stroke pad 13 and the second stroke pad 12 are inclined surfaces 9, so that the second stroke pad 12 can be more conveniently guided into the opposite side of the first stroke pad 13 during a long stroke. The guide rod clamp 11 is fixedly arranged at the outer end of the piston rod 5 through a screw, the end part of the cylinder body 6 is fixedly provided with a guide block 14, one end of the guide rod 3 parallel to the piston rod 5 is fixedly connected with the guide rod clamp 11, the guide rod 3 is slidably connected with the guide block 14, and the guide rod 3 and the guide block 14 jointly act as a guide for the piston rod 5 and the piston 7 and prevent the piston rod 5 and the piston 7 from rotating. In this embodiment, the guide rod holder 11 is a diamond shape, guide rod holder holes 111 and expansion and contraction grooves 112 are symmetrically formed on both sides of the guide rod holder 11, one end of the guide rod 3 is inserted into the guide rod holder hole 111 on one side of the guide rod holder 11 and is fastened by a bolt, and the guide rod holder hole 111 on the other side is left empty and is used when the stroke is changed.

In practical use, when the hydraulic cylinder needs to use a long stroke, as in the state shown in fig. 1, the guide rod 3 and the second stroke pad 12 fixedly connected with the piston 7 are located on the same side, and when the piston rod 5 and the piston 7 retract, the first stroke pad 13 and the second stroke pad 12 are located on two sides of the rodless cavity 602; when the hydraulic cylinder needs to use a short stroke, the bolt used for clamping the guide rod 3 on the guide rod clamp 11 is loosened, the guide rod 3 is pulled out from the guide rod clamp hole 111 on the guide rod clamp 11, the piston rod 5 and the piston 7 rotate 180 degrees, the guide rod 3 is fixedly connected with the guide rod clamp 11 again, at the moment, the first stroke cushion block 13 and the second stroke cushion block 12 are positioned on the same side in the rodless cavity 602, when the piston rod 5 and the piston 7 retract, the first stroke cushion block 13 is abutted against the second stroke cushion block 12, the stroke of the piston rod 5 and the piston 7 is shortened by the sum of the heights of the first stroke cushion block 13 and the second stroke cushion block 12 compared with the long stroke, therefore, the conversion between the long stroke and the short stroke can be conveniently realized, the secondary stroke is conveniently adjustable, the stroke adjustment can be conveniently and quickly realized by a user, the workload of operators is reduced, the application range of the hydraulic oil cylinder is increased, and the requirements of the user are met. In addition, the first stroke cushion block 13 and the second stroke cushion block 12 with various heights can be designed according to the requirements of customers, so that different requirements of the customers are met.