Double-acting supporting cylinder

Abstract

The utility model discloses a double-acting supporting cylinder, which belongs to the technical field of supporting cylinders and comprises a shell, a first piston component, a second piston component and a sealing component are mounted on the inner side of the shell, the first piston component is connected with the inner side of the second piston component, and the sealing component is connected with the first piston component and the second piston component. The shell comprises a cylinder body and a base, the first piston assembly comprises a piston B, a piston rod, a contact bolt, a spring A and a nut, the second piston assembly comprises a piston A, a spring B, an elastic taper sleeve, a gasket and a steel ball, and the sealing assembly comprises a dustproof ring, a steel wire check ring for a hole, an O-shaped ring A, an O-shaped ring B, an O-shaped ring C, an O-shaped ring D, an O-shaped ring E, an O-shaped ring F and an O-shaped ring G. By means of the mode, products of more sizes can be adapted through the long stroke of the piston B, the interference range for avoiding the appearance of the products is enlarged, meanwhile, the ascending and resetting processes of the piston B are both hydraulic effects, and the action is stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to support cylinder technical field, concretely relates to double acting type support cylinder. BACKGROUND

[0002] Support cylinder usually refers to the air cylinder or hydraulic cylinder for supporting, fixing or stabilizing some equipment or structure, is widely used in engineering machinery, construction equipment, aerospace etc.

[0003] Such as Chinese patent application CN109058221B discloses a kind of hydraulic support cylinder, including extension rod, dustproof ring, compression cover, cylinder body, lower pressure piston, lower cylinder base, collet, extension rod is positioned in the center position of cylinder body by guide sleeve radially;Compression cover is connected by thread after being compressed dustproof ring with cylinder body;Collet is sleeved on the lower end position of extension rod, the outer side of collet is inclined taper surface, the outer side of collet is parallel with the inner side of lower pressure piston, and a plurality of steel balls are arranged between the two parallel surfaces;Steel ball is positioned on the lower pressure piston by baffle ring axially;Lower cylinder base is provided with first oil channel and second oil channel;Lower cylinder base center portion is provided with through hole, piston rod is arranged in lower cylinder base, piston rod passes through piston rod spring and then passes through through hole, and is connected by nut thread;Nut is placed in the inner cavity of extension rod, and extension rod spring is mounted on the upper end of nut, and extension rod is extended by spring force.

[0004] However, the hydraulic support cylinder relies on the pushing force of spring when resetting, and after stroke lengthening, the spring force changes greatly due to the influence of spring characteristics, and the action is unstable.

[0005] Therefore, the utility model designs double acting type support cylinder to solve the above problems. UTILITY MODEL CONTENTS

[0006] In view of the above shortcomings of the prior art, the utility model provides a double acting type support cylinder.

[0007] To achieve the above purposes, the utility model is implemented by the following technical solutions:

[0008] The double acting type support cylinder comprises an outer shell,

[0009] The first piston assembly, the second piston assembly and the sealing assembly are mounted on the inner side of the outer shell, the first piston assembly is connected to the inner side of the second piston assembly, and the sealing assembly is connected to the first piston assembly and the second piston assembly.

[0010] The shell comprises a cylinder and a base, the first piston assembly comprises a piston B, a piston rod, a contact bolt, a spring A and a nut, the second piston assembly comprises a piston A, a spring B, an elastic cone sleeve, a gasket and a steel ball, the sealing assembly comprises a dustproof ring, a steel wire hole stopper, an O-ring A, an O-ring B, an O-ring C, an O-ring D, an O-ring E, an O-ring F and an O-ring G, the upper end of the base is fixedly connected with the cylinder, the outer side of the piston A is slidably connected with the cylinder, the lower end of the piston A is slidably connected with the cylinder and the base, the inner side of the piston A is abuttingly connected with the steel ball, the piston B is slidably connected with the inner side of the base, the outer side of the piston rod is slidably connected with the cylinder, the base and the elastic cone sleeve, the upper end of the piston B is slidably connected with the inner side of the piston rod, the contact bolt is fixedly installed on the upper end of the piston rod, the nut is fixedly installed on the upper end of the piston B, the nut is slidably connected with the piston rod, the upper and lower ends of the spring A are fixedly connected with the contact bolt and the nut respectively, the upper and lower ends of the spring B are fixedly connected with the gasket and the base respectively, the upper end of the gasket is abuttingly connected with the piston A and the steel ball, the upper and lower ends of the elastic cone sleeve are abuttingly connected with the cylinder and the base respectively, the outer side of the elastic cone sleeve is abuttingly connected with the steel ball, the outer side of the steel ball is abuttingly connected with the piston A, the dustproof ring is fixedly installed on the upper end of the cylinder, the inner side of the dustproof ring is slidably connected with the piston rod, the steel wire hole stopper is fixedly installed on the outer side of the piston A, the upper end of the steel wire hole stopper is abuttingly connected with the gasket, the O-ring A is sealingly and fixedly connected with the piston rod and the contact bolt, the O-ring B is provided with two, the upper O-ring B is sealingly and fixedly installed on the inner side of the base, the inner side of the upper O-ring B is sealingly and slidably connected with the piston B, the lower O-ring B is sealingly and fixedly installed on the outer side of the piston B, the outer side of the lower O-ring B is sealingly and slidably connected with the base, the O-ring C is provided with two, the two O-rings C and the O-ring F are sleeved and fixedly installed on the outer side of the base, the O-ring D is sealingly and fixedly installed on the outer side of the upper end of the base, the outer side of the O-ring D is sealingly and slidably connected with the piston A, the O-ring E is sealingly and fixedly connected with the inner side of the lower end of the cylinder and the outer side of the upper end of the base, the O-ring G is sleeved and sealingly and fixedly connected with the outer side of the piston A, and the outer side of the O-ring G is sealingly and slidably connected with the cylinder.

[0011] Furthermore, the cylinder, the base, the piston A and the inner side of the piston rod are hollow, the piston A is located in the inner side of the cylinder, the upper end of the base is located in the inner side of the cylinder and the piston A, the piston rod is located in the inner side of the cylinder and the base, and the piston B is located in the inner side of the base and the piston rod.

[0012] Furthermore, the outer side of the piston B is divided into two cavities by the inner side protrusions of the base, and the piston rod is located in the upper end cavity of the piston B.

[0013] Furthermore, the outer side of the elastic cone sleeve is gradually increased in diameter from top to bottom.

[0014] Furthermore, a channel is formed on one side of the base to communicate the lower end cavity of the outer side of the piston B with the outside.

[0015] Further, the bottom base upper end side is provided with an inclined channel extending through the bottom base side wall to the piston rod surface.

[0016] Further, the bottom base lower end is provided with an L-shaped channel, one end of the L-shaped channel vertically upward, and the other end of the L-shaped channel communicates with the lower end of the gap between the cylinder body and the piston A.

[0017] Further, the channel on one side of the bottom base is located between the two O-rings C, and the lower end of the inclined channel on one side of the bottom base is located outside the O-ring F.

[0018] Compared with the prior art, the utility model has the beneficial effects that: 1. The long stroke of the piston B can adapt to more sizes of products, and the interference range of the product shape is large, and the rising and resetting processes of the piston B are all hydraulic actions, stable and reliable;

[0019] 2. The setting of the bottom base inner side protruding block, the inclined channel and the L-shaped channel make the hydraulic oil easy to input and discharge, and the travel of the piston B can be limited. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is the perspective view of the double-acting support cylinder of the utility model;

[0022] Figure 2 It is the front view of the double-acting support cylinder of the utility model;

[0023] Figure 3 It is the left view of the double-acting support cylinder of the utility model;

[0024] Figure 4 It is the sectional view along A-A of Figure 2 It is the sectional view along B-B of

[0025] Figure 5 It is the sectional view along B-B of Figure 3

[0026] The numbers in the drawings respectively represent:

[0027] ​1. cylinder; 2. base; 3. piston A; 4. piston B; 5. piston rod; 6. contact bolt; 7. spring A; 8. spring B; 9. nut; 10. elastic cone sleeve; 11. gasket; 12. steel ball; 13. dust seal; 14. hole steel wire retainer; 15. O-ring A; 16. O-ring B; 17. O-ring C; 18. O-ring D; 19. O-ring E; 20. O-ring F; 21. O-ring G. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the following description, "left", "right", "front", "rear", "upper", "lower" are oriented in the perspective of the front view.

[0030] Embodiment one: in some embodiments, referring to the accompanying drawings of the specification Figures 1-5 , the double-acting support cylinder comprises a shell,

[0031] The inner side of the shell is provided with a first piston assembly, a second piston assembly and a sealing assembly, the first piston assembly is connected to the inner side of the second piston assembly, and the sealing assembly is connected to the first piston assembly and the second piston assembly;

[0032] The shell includes a cylinder body 1 and a base 2, the first piston assembly includes a piston B 4, a piston rod 5, a contact bolt 6, a spring A 7 and a nut 9, the second piston assembly includes a piston A 3, a spring B 8, an elastic cone sleeve 10, a gasket 11 and a steel ball 12, the sealing assembly includes a dustproof ring 13, a hole steel wire check ring 14, an O-ring A 15, an O-ring B 16, an O-ring C 17, an O-ring D 18, an O-ring E 19, an O-ring F 20 and an O-ring G 21, the upper end of the base 2 is fixedly connected with the cylinder body 1, the outer side of the piston A 3 is slidably connected with the cylinder body 1, the lower end of the piston A 3 is slidably connected with the cylinder body 1 and the base 2, the inner side of the piston A 3 is abuttingly connected with the steel ball 12, the piston B 4 is slidably connected with the inner side of the base 2, the outer side of the piston rod 5 is slidably connected with the cylinder body 1, the base 2 and the elastic cone sleeve 10, the upper end of the piston B 4 is slidably connected with the inner side of the piston rod 5, the contact bolt 6 is fixedly installed on the upper end of the piston rod 5, the nut 9 is fixedly installed on the upper end of the piston B 4, the nut 9 is slidably connected with the piston rod 5, the upper and lower ends of the spring A 7 are fixedly connected with the contact bolt 6 and the nut 9 respectively, the upper and lower ends of the spring B 8 are fixedly connected with the gasket 11 and the base 2 respectively, the upper end of the gasket 11 is abuttingly connected with the piston A 3 and the steel ball 12, the upper and lower ends of the elastic cone sleeve 10 are abuttingly connected with the cylinder body 1 and the base 2 respectively, the outer side of the elastic cone sleeve 10 is abuttingly connected with the steel ball 12, the outer side of the steel ball 12 is abuttingly connected with the piston A 3, the dustproof ring 13 is fixedly installed on the upper end of the cylinder body 1, the inner side of the dustproof ring 13 is slidably connected with the piston rod 5, the hole steel wire check ring 14 is fixedly installed on the outer side of the piston A 3, the upper end of the hole steel wire check ring 14 is abuttingly connected with the gasket 11, the O-ring A 15 is sealingly and fixedly connected with the piston rod 5 and the contact bolt 6, the O-ring B 16 is provided with two, the upper O-ring B 16 is sealingly and fixedly installed on the inner side of the base 2, the inner side of the upper O-ring B 16 is sealingly and slidably connected with the piston B 4, the lower O-ring B 16 is sealingly and fixedly installed on the outer side of the piston B 4, the outer side of the lower O-ring B 16 is sealingly and slidably connected with the base 2, the O-ring C 17 is provided with two, the two O-ring C 17 and the O-ring F 20 are sleeved and fixedly installed on the outer side of the base 2, the O-ring D 18 is sealingly and fixedly installed on the outer side of the upper end of the base 2, the outer side of the O-ring D 18 is sealingly and slidably connected with the piston A 3, the O-ring E 19 is sealingly and fixedly connected with the inner side of the lower end of the cylinder body 1 and the outer side of the upper end of the base 2, the O-ring G 21 is sleeved and sealingly and fixedly connected with the outer side of the piston A 3, the outer side of the O-ring G 21 is sealingly and slidably connected with the cylinder body 1.

[0033] The double-acting support cylinder is normally used, and oil is injected into the bottom of the piston B. The hydraulic oil pushes the piston B4 upwards, the piston B4 drives the nut 9 to move, the nut 9 drives the spring A7 to move, the spring A7 drives the contact bolt 6 and the piston rod 5 to move, and the contact bolt 6 stops when it touches the obstacle. The hydraulic oil continues to push the piston B4 to compress the spring A7 to rise, and the piston B4 is limited by the base 2. When the oil pressure continues to rise, the piston A3 moves downwards under the action of the oil pressure, the diameter of the piston A3 is reduced, the steel ball 12 is extruded, the elastic cone sleeve 10 is extruded and tightly holds the piston rod 5, and the support is completed. After the hydraulic oil in the bottom of the piston B4 is exhausted, the piston A3 rises under the action of the spring B8, the piston A3 no longer extrudes the steel ball 12 and the elastic cone sleeve 10, the elastic cone sleeve 10 no longer tightly holds the piston rod 5, and oil is supplied to the inside of the base 2. The hydraulic oil pushes the piston B4 downwards, the piston B4 drives the nut 9 to move, the nut 9 drives the contact bolt 6 and the piston rod 5 to move back to the initial position. The long stroke of the piston B4 can adapt to more sizes of products, the interference range of the product shape is larger, and the rising and resetting processes of the piston B4 are all hydraulic actions, which are stable and reliable.

[0034] The cylinder body 1, the base 2, the piston A3 and the inside of the piston rod 5 are hollow. The piston A3 is located inside the cylinder body 1, the upper end of the base 2 is located inside the cylinder body 1 and the piston A3, the piston rod 5 is located inside the cylinder body 1 and the base 2, and the piston B4 is located inside the base 2 and the piston rod 5.

[0035] The outside of the piston B4 is divided into two cavities by the inside of the base 2, and the piston rod 5 is located in the upper end cavity of the piston B4.

[0036] The outside of the elastic cone sleeve 10 is gradually increased in diameter from top to bottom.

[0037] The base 2 is provided with a channel on one side to communicate the lower end cavity outside the piston B4 with the outside.

[0038] The base 2 is provided with an inclined channel on one side of the upper end, which extends through the side wall of the base 2 to the surface of the piston rod 5.

[0039] The base 2 is provided with an L-shaped channel at the lower end, one end of which is vertically upward, and the other end of which communicates with the lower end of the gap between the cylinder body 1 and the piston A3.

[0040] The channel on one side of the base 2 is located between the two O-rings C17, and the lower end of the inclined channel on one side of the base 2 is located outside the O-ring F20.

[0041] The double-acting support cylinder is normally used, the piston B4 is contacted with the inner side protrusion of the base 2 when rising to stop moving, and oil is supplied to the upper end cavity of the inner side protrusion of the base 2 after the support is completed, through the setting of the inner side protrusion of the base 2, the hydraulic oil can be conveniently input and discharged through the inclined channel and the L-shaped channel, and the stroke of the piston B4 can be limited.

[0042] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A double acting support cylinder comprising a housing, characterised in that: The first piston assembly, the second piston assembly and the sealing assembly are arranged in the housing, the first piston assembly is connected with the second piston assembly, and the sealing assembly is connected with the first piston assembly and the second piston assembly; The shell includes a cylinder body (1) and a base (2), the first piston assembly includes a piston B (4), a piston rod (5), a contact bolt (6), a spring A (7) and a nut (9), the second piston assembly includes a piston A (3), a spring B (8), an elastic cone sleeve (10), a gasket (11) and a steel ball (12), the sealing assembly includes a dustproof ring (13), a hole steel wire retainer ring (14), an O-ring A (15), an O-ring B (16), an O-ring C (17), an O-ring D (18), an O-ring E (19), an O-ring F (20) and an O-ring G (21), the upper end of the base (2) is fixedly connected with the cylinder body (1), the outer side of the piston A (3) is slidably connected with the cylinder body (1), the lower end of the piston A (3) is slidably connected with the cylinder body (1) and the base (2), the inner side of the piston A (3) is abuttingly connected with the steel ball (12), the piston B (4) is slidably connected with the inner side of the base (2), the outer side of the piston rod (5) is slidably connected with the cylinder body (1), the base (2) and the elastic cone sleeve (10), the upper end of the piston B (4) is slidably connected with the inner side of the piston rod (5), the contact bolt (6) is fixedly installed on the upper end of the piston rod (5), the nut (9) is fixedly installed on the upper end of the piston B (4), the nut (9) is slidably connected with the piston rod (5), the spring A (7) is fixedly connected with the contact bolt (6) and the nut (9) at the upper and lower ends respectively, the spring B (8) is fixedly connected with the gasket (11) and the base (2) at the upper and lower ends respectively, the upper end of the gasket (11) is abuttingly connected with the piston A (3) and the steel ball (12), the upper and lower ends of the elastic cone sleeve (10) are abuttingly connected with the cylinder body (1) and the base (2) respectively, the outer side of the elastic cone sleeve (10) is abuttingly connected with the steel ball (12), the outer side of the steel ball (12) is abuttingly connected with the piston A (3), the dustproof ring (13) is fixedly installed on the upper end of the cylinder body (1), the inner side of the dustproof ring (13) is slidably connected with the piston rod (5), the hole steel wire retainer ring (14) is fixedly installed on the outer side of the piston A (3), the upper end of the hole steel wire retainer ring (14) is abuttingly connected with the gasket (11), the O-ring A (15) is sealingly and fixedly connected with the piston rod (5) and the contact bolt (6), the O-ring B (16) is provided with two, the upper O-ring B (16) is sealingly and fixedly installed on the inner side of the base (2), the inner side of the upper O-ring B (16) is sealingly and slidably connected with the piston B (4), the lower O-ring B (16) is sealingly and fixedly installed on the outer side of the piston B (4), the outer side of the lower O-ring B (16) is sealingly and slidably connected with the base (2), the O-ring C (17) is provided with two, the two O-ring C (17) and the O-ring F (20) are sleeved and fixedly installed on the outer side of the base (2), the O-ring D (18) is sealingly and fixedly installed on the outer side of the upper end of the base (2), the outer side of the O-ring D (18) is sealingly and slidably connected with the piston A (3), the O-ring E (19) is sealingly and fixedly connected with the inner side of the lower end of the cylinder body (1) and the outer side of the upper end of the base (2), the O-ring G (21) is sleeved and sealingly and fixedly connected with the outer side of the piston A (3), the outer side of the O-ring G (21) is sealingly and slidably connected with the cylinder body (1).

2. The double-acting support cylinder according to claim 1, characterized by The cylinder (1), the base (2), the piston A (3) and the piston rod (5) are hollow inside, the piston A (3) is located inside the cylinder (1), the upper end of the base (2) is located inside the cylinder (1) and the piston A (3), the piston rod (5) is located inside the cylinder (1) and the base (2), and the piston B (4) is located inside the base (2) and the piston rod (5).

3. The double-acting support cylinder according to claim 2, characterized by The piston B (4) is divided into two cavities by the protrusion inside the base (2), and the piston rod (5) is located in the upper cavity of the piston B (4).

4. The double-acting support cylinder according to claim 3, characterized by The elastic cone sleeve (10) is gradually increased in diameter from top to bottom.

5. The double-acting support cylinder according to claim 4, characterized by The base (2) is provided with a channel on one side to communicate the lower cavity outside the piston B (4) with the outside.

6. The double-acting support cylinder according to claim 5, characterized by The upper end of the base (2) is provided with an inclined channel extending through the side wall of the base (2) to the surface of the piston rod (5).

7. The dual-action support cylinder of claim 6, wherein, The lower end of the base (2) is provided with an L-shaped channel, one end of the L-shaped channel is vertically upward, and the other end of the L-shaped channel is in communication with the lower end of the gap between the cylinder (1) and the piston A (3) for sliding the containing base (2).

8. The double-acting support cylinder according to claim 7, characterized by The channel on one side of the base (2) is located between the two O-rings C (17), and the lower end of the inclined channel on one side of the base (2) is located outside the O-ring F (20).

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