CN202833412U

CN202833412U - Anti-deflection multilevel oil cylinder

Info

Publication number: CN202833412U
Application number: CN 201220511723
Authority: CN
Inventors: 姚冬成; 周宝昌; 周建华; 潘敏成; 孙伟平; 周厚生
Original assignee: JIANGSU CHANGLI HYDRAULIC CYLINDER CO Ltd
Current assignee: Jiangsu Changli Technology Development Co., Ltd.
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-03-27
Anticipated expiration: 2022-09-29

Abstract

The utility model discloses an anti-deflection multilevel oil cylinder. The anti-deflection multilevel oil cylinder comprises a guiding part, a multilevel cylinder part, an upper connection plate and a lower base plate. The guiding part comprises an inner guiding barrel, a middle guiding barrel and an outer guiding barrel. The multilevel cylinder part comprises an outer cylinder barrel, an inner cylinder barrel, a piston rod and a cylinder bottom, wherein the bottom of the inner guiding barrel is connected with a middle guiding barrel piston, and the bottom of the middle guiding barrel is connected with an outer guiding barrel piston. The inner wall of the outer guiding barrel and the inner wall of the middle guiding barrel are respectively and evenly distributed in the circumferential direction with at least three convex rib strips which extend in the axial direction. The outer wall of the outer guiding barrel piston and the outer wall of the middle guiding barrel piston are respectively provided with grooves which are matched with the convex rib strips. According to the anti-deflection multilevel oil cylinder, through the sliding match of the convex rib strips which are arranged on the inner wall of the guiding barrels and the grooves which are arranged in the guiding barrel pistons and matched with the convex rib strips, the oil cylinder is guided to move by utilizing the match between the convex rib strips and the grooves when in work, and thereby the deflection phenomenon of the oil cylinder in the process of moving is effectively prevented.

Description

The anti-deflection multi-stage oil cylinder

Technical field

The utility model relates to technical field of hydraulic oil cylinder, especially a kind of multi-stage oil cylinder of anti-deflection.

Background technique

Hydraulic jack is widely used in all trades and professions as a kind of power plant.In some special industry, require oil cylinder to have stationarity in the position of stretching out state and retracted mode, deflection angle needs can not occur the large phenomenon of deflection angle when oil cylinder is subjected to ectocine in controlled range in the running.

The model utility content

The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, a kind of anti-deflection multi-stage oil cylinder is provided, produce the larger phenomenon of deflection angle effectively to prevent oil cylinder when being subjected to ectocine.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of anti-deflection multi-stage oil cylinder, comprise targeting part, be eccentrically set on the Multi-stage cylinder part in the targeting part, the upper linking plate that connects targeting part and Multi-stage cylinder part front end, the lower shoe that connects targeting part and Multi-stage cylinder part bottom, targeting part comprises from inside to outside the successively interior guide cylinder of ring set, middle guide cylinder and outer guide cylinder, Multi-stage cylinder partly comprises outer cylinder, inner cylinder tube, the cylinder bottom that is arranged on the piston rod in the inner cylinder tube and is fixed on the outer cylinder bottom, interior guide cylinder bottom is connected with middle guide cylinder piston, middle guide cylinder bottom is connected with outer guide cylinder piston, circumferentially be evenly equipped with respectively at least three axially extended convex tendon bars on the inwall of outer guide cylinder and middle guide cylinder, have respectively the groove that matches with described convex tendon bar on the outer wall of the outer wall of outer guide cylinder piston and middle guide cylinder piston.

Specifically, the front end of the front end of described interior guide cylinder, the front end of middle guide cylinder and outer guide cylinder respectively correspondence is fixed with interior guide pin bushing, middle guide pin bushing and outer bush, piston rod head is connected with the bar head, interior guide pin bushing is fixedly connected with upper linking plate respectively with the bar head, and outer guide cylinder is fixedly connected with lower plate respectively with cylinder bottom.

Be connected with interior guide sleeve before the described inner cylinder tube, the outer cylinder front end is connected with outer guide sleeve, and interior guide sleeve endoporus and piston rod are slidingly matched, and outer guide sleeve endoporus and inner cylinder tube outer wall are slidingly matched.

The beneficial effects of the utility model are: the utility model has increased the targeting part that is comprised of multistage guide cylinder outside the Multi-stage cylinder part, and by be arranged on the convex tendon bar on the guide cylinder inwall and be arranged on the guide cylinder piston and groove that the convex tendon bar matches between be slidingly matched, so that oil cylinder is when work, utilize the cooperation guiding between convex tendon bar and the groove mobile, thereby effectively prevented the deflection phenomenon of oil cylinder in moving process.

Description of drawings

Below in conjunction with drawings and embodiments the utility model is further specified.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the cross section enlarged diagram that A-A analyses and observe rear targeting part among Fig. 1.

Guide pin bushing 16. outer bushs 17. bar heads 18. interior guide sleeve 19. outer guide sleeves in the guide cylinder piston 11. outer guide cylinder piston 12. convex tendon bars 13. grooves 14. interior guide pin bushings 15. in guide cylinder 5. outer guide cylinder 6. outer cylinders 7. inner cylinder tubes 8. piston rods 9. cylinder bottoms 10. in 1. upper linking plates, 2. lower plates, the 3. interior guide cylinders 4. among the figure

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

The multi-stage oil cylinder of a kind of anti-deflection as shown in Figure 1 and Figure 2, comprise targeting part, be eccentrically set on the Multi-stage cylinder part in the targeting part, the front end of targeting part and Multi-stage cylinder part is connected to a fixed by upper linking plate 1, and the bottom of targeting part and Multi-stage cylinder part is connected to a fixed by lower shoe 2.

Targeting part comprises from inside to outside successively interior guide cylinder 3, middle guide cylinder 4 and the outer guide cylinder 5 of ring set, interior guide cylinder 3 bottoms are connected with middle guide cylinder piston 10, middle guide cylinder 4 bottoms are connected with outer guide cylinder piston 11, and the front end of the front end of interior guide cylinder 3, middle guide cylinder 4 and the front end of outer guide cylinder 5 respectively correspondence are fixed with interior guide pin bushing 14, middle guide pin bushing 15 and outer bush 16.

Multi-stage cylinder partly comprises outer cylinder 6, inner cylinder tube 7, is arranged on the piston rod 8 in the inner cylinder tube 6 and the cylinder bottom 9 that is fixed on outer cylinder 6 bottoms, the center of guide cylinder 3 in inner cylinder tube 7 off-centrings, the front end of inner cylinder tube 7 is connected with interior guide sleeve 18, the front end of outer cylinder 6 is connected with outer guide sleeve 19, interior guide sleeve 18 endoporus and piston rod 8 are slidingly matched, and outer guide sleeve 19 endoporus and inner cylinder tube 7 outer walls are slidingly matched.Be connected with bar head 17 at piston rod 8 heads, interior guide pin bushing 14 is fixedly connected with upper linking plate 1 respectively with bar head 17, and outer guide cylinder 5 is fixedly connected with lower plate 2 respectively with cylinder bottom 9, when the Multi-stage cylinder componental movement, drives the targeting part synchronizing moving by upper linking plate 1.

Circumferentially be evenly equipped with respectively outside four axially extended convex tendon bars 12 on the inwall of guide cylinder 5 and middle guide cylinder 4, on the outer wall of outer guide cylinder piston 10, have respectively the groove 14 that matches with described convex tendon bar 13 on the outer wall of middle guide cylinder piston 10.When multi-stage oil cylinder is worked, groove 14 in convex tendon bar 13 edges on the middle guide cylinder 4 on the guide cylinder piston 10 moves, convex tendon bar 13 on the outer guide cylinder 6 moves along the groove 14 on the outer guide cylinder piston 11, utilize the movement of the cooperation guiding multi-stage oil cylinder between convex tendon bar 13 and the groove 14, thereby effectively prevented the deflection phenomenon of multi-stage oil cylinder in moving process.

Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with technique can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. anti-deflection multi-stage oil cylinder, comprise targeting part, be eccentrically set on the Multi-stage cylinder part in the targeting part, the upper linking plate (1) that connects targeting part and Multi-stage cylinder part front end, the lower shoe (2) that connects targeting part and Multi-stage cylinder part bottom, targeting part comprises from inside to outside the successively interior guide cylinder (3) of ring set, middle guide cylinder (4) and outer guide cylinder (5), Multi-stage cylinder partly comprises outer cylinder (6), inner cylinder tube (7), the cylinder bottom (9) that is arranged on the piston rod (8) in the inner cylinder tube (7) and is fixed on outer cylinder (6) bottom, it is characterized in that: interior guide cylinder (3) bottom is connected with middle guide cylinder piston (10), middle guide cylinder (4) bottom is connected with outer guide cylinder piston (11), circumferentially be evenly equipped with respectively at least three axially extended convex tendon bars (12) on the inwall of outer guide cylinder (5) and middle guide cylinder (4), have respectively the groove (13) that matches with described convex tendon bar (12) on the outer wall of the outer wall of outer guide cylinder piston (11) and middle guide cylinder piston (10).

2. anti-deflection multi-stage oil cylinder according to claim 1, it is characterized in that: the front end of the front end of described interior guide cylinder (3), middle guide cylinder (4) and the front end of outer guide cylinder (5) respectively correspondence are fixed with interior guide pin bushing (14), middle guide pin bushing (15) and outer bush (16), piston rod (8) head is connected with bar head (17), interior guide pin bushing (14) is fixedly connected with upper linking plate (1) respectively with bar head (17), and outer guide cylinder (5) is fixedly connected with lower plate (2) respectively with cylinder bottom (9).

3. anti-deflection multi-stage oil cylinder according to claim 1, it is characterized in that: described inner cylinder tube (7) front end is connected with interior guide sleeve (18), outer cylinder (6) front end is connected with outer guide sleeve (19), interior guide sleeve (18) endoporus and piston rod (8) are slidingly matched, and outer guide sleeve (19) endoporus and inner cylinder tube (7) outer wall are slidingly matched.