A rotary and telescopic integrated hydraulic cylinder

Abstract

The present invention discloses a rotary and telescopic integrated hydraulic cylinder, which includes a cylinder block. A cylinder head is fixedly connected to the top of the cylinder block, and a cylinder seat is fixedly connected to the top of the cylinder block. A telescopic piston moving assembly is arranged inside the cylinder block. When hydraulic oil is injected into chamber a, it will push the partition plate to rotate counterclockwise, thereby driving the rotating rod to rotate. Utilizing the connection relationship between the rotating rod and the piston rod, the piston rod is driven to rotate. When hydraulic oil is injected into chamber b, at this time, the hydraulic oil in chamber a is discharged, thereby driving the partition plate to rotate clockwise. Through this structure, the piston rod is driven to rotate, without the need to add other external power equipment to drive the rotation of the piston rod. Moreover, this structure can introduce the hydraulic oil used to inject into the sliding oil chamber into the rotating oil chamber through a pipeline, which can further reduce costs.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cylinders, and specifically to a rotary telescopic integrated hydraulic cylinder. Background Technique

[0002] A hydraulic cylinder is a common device. A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. When it is used to achieve reciprocating motion, a speed reduction device can be omitted, and there is no transmission gap, and the motion is stable. It is widely used in the hydraulic systems of various machines. The motion of the hydraulic cylinder is all linear motion, and the external components driven by it also move linearly accordingly.

[0003] In the actual working process, many external components driven by the hydraulic cylinder not only require a linear stroke but also a certain rotation angle. However, the hydraulic cylinder itself cannot achieve a rotation action. Currently, the commonly used method is to add a rotating device to achieve the rotation action of the hydraulic cylinder and further drive the rotation of the external components. However, this method not only has a relatively complex structure and high cost but also poor stability. Therefore, a rotary telescopic integrated hydraulic cylinder is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotary telescopic integrated hydraulic cylinder. When hydraulic oil is injected into cavity a, it will push the partition plate to rotate counterclockwise, thereby driving the rotating rod to rotate. Utilizing the connection relationship between the rotating rod and the piston rod, the piston rod is driven to rotate. When hydraulic oil is injected into cavity b, at this time, the hydraulic oil in cavity a is discharged, thereby driving the partition plate to rotate clockwise. Through this structure, the piston rod is driven to rotate, and there is no need to add other external power devices to drive the rotation of the piston rod. Moreover, this structure can introduce the hydraulic oil used to inject into the sliding oil cavity into the rotating oil cavity through a pipeline, which can further reduce costs.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A rotary telescopic integrated hydraulic cylinder includes a cylinder block. The top of the cylinder block is fixedly connected with a cylinder head, and the top of the cylinder block is fixedly connected with a cylinder seat. An extendable piston moving assembly is arranged inside the cylinder block, and a rotating assembly is arranged inside the cylinder seat;

[0007] The rotating assembly includes a rotating oil cavity opened inside the cylinder seat. A rotating rod for driving the piston moving assembly to rotate is arranged inside the rotating oil cavity. A fixed ring sleeve is fixedly connected to the outer surface of the rotating rod, and a partition plate is fixedly connected to the surface of the fixed ring sleeve. Through holes are respectively penetrated through both sides of the inner cavity of the rotating oil cavity, and a sealing plate is fixedly connected to one side of the inner wall of the rotating oil cavity. One side of the sealing plate is slidably connected to the outer surface of the fixed ring sleeve.

[0008] As a further solution of the present invention: on both sides of the inner wall of the rotating oil chamber and on one side of the through hole, barrier blocks are fixedly connected, and a connecting piece is communicated with the outer surface of the through hole.

[0009] As a further solution of the present invention: a cavity a is formed between the side of the sealing plate opposite to the barrier block, and a cavity b is formed between the other side of the sealing plate and the other side of the barrier block.

[0010] As a further solution of the present invention: the piston moving assembly includes a piston rod penetrating through the cylinder block, the cylinder head and the cylinder seat, and a sliding oil chamber located in the cylinder block. A piston block is fixedly connected to the outer surface of the piston rod, and the outer surface of the piston block is slidably connected to the inner surface of the sliding oil chamber. A first oil port communicated with the sliding oil chamber is opened on one side of the cylinder head, and a second oil port communicated with the sliding oil chamber is opened on one side of the cylinder seat.

[0011] As a further solution of the present invention: a barrier sealing ring for blocking hydraulic oil is arranged on the outer surface of the rotating rod inside the cylinder seat.

[0012] As a further solution of the present invention: a sliding cavity is opened at the bottom end of the piston rod, and the inner surface of the sliding cavity is slidably connected to the outer surface of the rotating rod.

[0013] As a further solution of the present invention: a plurality of sliding grooves are opened on the outer surface of the rotating rod, a plurality of sliding strips are fixedly connected to the inner surface of the sliding cavity, and the outer surface of the sliding strip is slidably connected to the inner surface of the sliding groove.

[0014] As a further solution of the present invention: a sealing ring for blocking hydraulic oil is sleeved on the outer surface of the rotating rod inside the piston rod.

[0015] Advantages of the present invention:

[0016] (1) In the present invention, by opening a rotating oil chamber inside the cylinder seat and arranging a rotating rod in the rotating oil chamber, cooperating with the partition plate fixed on the fixed ring sleeve and the sealing plate fixed on the inner wall of the rotating oil chamber, a cavity a and a cavity b are formed in the rotating oil chamber. When hydraulic oil is injected into the cavity a, the partition plate will be pushed to rotate counterclockwise, thereby driving the rotating rod to rotate. Utilizing the connection relationship between the rotating rod and the piston rod, the piston rod is driven to rotate. When hydraulic oil is injected into the cavity b, at this time, the hydraulic oil in the cavity a is discharged, thereby driving the partition plate to rotate clockwise. The piston rod is driven to rotate through this structure, without adding other external power devices for driving the rotation of the piston rod, and this structure can introduce the hydraulic oil used for injecting into the sliding oil chamber into the rotating oil chamber through a pipeline, which can further reduce costs.

[0017] (2) In the present invention, by providing a sliding cavity at the bottom end of the piston rod and arranging a sliding bar in the sliding cavity, and cooperating with the sufficiently long sliding groove on the rotating rod, when the rotating rod moves, it will not affect the sliding of the piston rod, and this structure is relatively simple and easy to promote. Sealing the piston rod with a sealing ring can prevent hydraulic oil from entering the inside of the sliding cavity, reduce the occurrence of the situation where the rotating rod cannot rotate, and further improve its stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic diagram of the internal structure of the hydraulic cylinder in the present invention;

[0020] Figure 2 is a partial top cross-sectional view of the cylinder base in the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the piston rod in the present invention.

[0022] In the figures: 1, cylinder block; 2, cylinder head; 3, cylinder base; 4, piston movement assembly; 41, first oil port; 42, second oil port; 43, sliding oil cavity; 44, piston rod; 45, piston block; 5, rotation assembly; 51, rotating oil cavity; 52, rotating rod; 53, fixed ring sleeve; 54, through hole; 55, partition plate; 56, sealing plate; 57, blocking block; 58, connecting piece; 6, blocking sealing ring; 7, sliding cavity; 8, sealing ring; 9, sliding groove; 10, sliding bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the protection scope of the present invention.

[0024] Please refer to Figures 1 - 3 As shown, the present invention is a rotary telescopic integrated hydraulic cylinder, including a cylinder block 1, the top of the cylinder block 1 is fixedly connected with a cylinder head 2, the top of the cylinder block 1 is fixedly connected with a cylinder base 3, an extendable piston movement assembly 4 is arranged inside the cylinder block 1, and a rotation assembly 5 is arranged inside the cylinder base 3;

[0025] The rotating assembly 5 includes a rotating oil cavity 51 formed in the cylinder base 3. Inside the rotating oil cavity 51, there is a rotating rod 52 for driving the piston moving assembly 4 to rotate. A fixed ring sleeve 53 is fixedly connected to the outer surface of the rotating rod 52. A partition plate 55 is fixedly connected to the surface of the fixed ring sleeve 53. One side of the inner wall of the rotating oil cavity 51 is fixedly connected to a sealing plate 56. Through holes 54 are formed through both sides of the inner cavity of the rotating oil cavity 51 and on both sides of the sealing plate 56. The smaller the distance between the two through holes 54, the larger the angle that the piston moving assembly 4 can rotate. One side of the sealing plate 56 is slidably connected to the outer surface of the fixed ring sleeve 53.

[0026] On both sides of the inner wall of the rotating oil cavity 51 and on one side of the through hole 54, there are barrier blocks 57 fixedly connected. The outer surface of the through hole 54 is communicated with a connecting piece 58, and the connecting piece 58 is used to communicate with an external hydraulic oil pipeline.

[0027] A cavity a is formed between the side of the sealing plate 56 opposite to the barrier block 57. A cavity b is formed between the other side of the sealing plate 56 and the other side of the barrier block 57. When the space of the cavity a increases, the space of the cavity b decreases at this time.

[0028] The piston moving assembly 4 includes a piston rod 44 passing through the cylinder block 1, the cylinder head 2, and the cylinder base 3, and a sliding oil cavity 43 located inside the cylinder block 1. A piston block 45 is fixedly connected to the outer surface of the piston rod 44. The outer surface of the piston block 45 is slidably connected to the inner surface of the sliding oil cavity 43. A first oil port 41 communicating with the sliding oil cavity 43 is formed on one side of the cylinder head 2. A second oil port 42 communicating with the sliding oil cavity 43 is formed on one side of the cylinder base 3.

[0029] Inside the cylinder base 3 and on the outer surface of the rotating rod 52, there is a barrier sealing ring 6 for blocking hydraulic oil to prevent the hydraulic oil in the sliding oil cavity 43 from flowing convectively with the hydraulic oil in the rotating oil cavity 51. A sliding cavity 7 is formed at the bottom end of the piston rod 44. The inner surface of the sliding cavity 7 is slidably connected to the outer surface of the rotating rod 52.

[0030] A number of sliding grooves 9 are formed on the outer surface of the rotating rod 52. A number of sliding strips 10 are fixedly connected to the inner surface of the sliding cavity 7. The outer surface of the sliding strip 10 is slidably connected to the inner surface of the sliding groove 9.

[0031] Inside the piston rod 44 and on the outer surface of the rotating rod 52, there is a sealing ring 8 for blocking hydraulic oil.

[0032] Working principle of the present invention: First, connect the first oil port 41 and the second oil port 42 in the piston moving assembly 4 and the connecting member 58 in the rotating assembly 5 to the external hydraulic oil pipeline. When the hydraulic cylinder needs to extend, pump hydraulic oil into the interior of the second oil port 42 through an external oil pump. The hydraulic oil enters the sliding oil cavity 43 from the second oil port 42 and is located below the piston block 45, thereby pushing the piston block 45 upward. At this time, a sliding occurs between the rotating rod 52 and the sliding cavity 7, and the sliding groove 9 slides within the sliding strip 10, thereby pushing the piston rod 44 upward. When the hydraulic cylinder needs to contract, inject hydraulic oil into the first oil port 41. The hydraulic oil enters the sliding oil cavity 43 from the first oil port 41 and is located above the piston block 45, and at this time, the hydraulic oil below the piston block 45 flows out through the second oil port 42. When the piston rod 44 needs to rotate, first inject hydraulic oil into the through hole 54 through the connecting member 58 on one side and flow into the a cavity. Since the injected hydraulic oil is greater than the volume of the cavity a, the partition plate 55 on the fixed ring sleeve 53 slides within the rotating oil cavity 51 at this time. Under the cooperation relationship of the sliding groove 9 and the sliding strip 10, the rotating rod 52 drives the piston rod 44 to rotate. At this time, the volume of the cavity b decreases. When the piston rod 44 needs to be rotated in the reverse direction, inject hydraulic oil into the cavity b through the through hole 54 on the other side at this time, so that the space of the cavity a decreases. At this time, the partition plate 55 rotates in the reverse direction, thereby driving the fixed ring sleeve 53 to drive the rotating rod 52 to rotate in the reverse direction, and further driving the piston rod 44 to rotate in the reverse direction.

[0033] The above has described an embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A rotary telescopic integrated hydraulic cylinder, comprising a cylinder block (1), a cylinder head (2) is fixedly connected to the top of the cylinder block (1), and a cylinder seat (3) is fixedly connected to the top of the cylinder block (1), characterized in that, Inside the cylinder block (1), there is a telescopic piston moving assembly (4). Inside the cylinder base (3), there is a rotating assembly (5). The piston moving assembly (4) includes a piston rod (44) that penetrates through the cylinder block (1), the cylinder head (2), and the cylinder base (3). The rotating assembly (5) includes a rotating oil cavity (51) formed inside the cylinder base (3). Inside the rotating oil cavity (51), there is a rotating rod (52) for driving the piston moving assembly (4) to rotate. A fixed ring sleeve (53) is fixedly connected to the outer surface of the rotating rod (52). A partition plate (55) is fixedly connected to the surface of the fixed ring sleeve (53). Through holes (54) are formed through both sides of the inner cavity of the rotating oil cavity (51). A sealing plate (56) is fixedly connected to one side of the inner wall of the rotating oil cavity (51). One side of the sealing plate (56) is slidably connected to the outer surface of the fixed ring sleeve (53). On both sides of the inner wall of the rotating oil cavity (51) and on one side of the through hole (54), there are barrier blocks (57) fixedly connected. A connecting piece (58) is communicated with the outer surface of the through hole (54). A cavity a is formed between the opposite sides of the sealing plate (56) and the barrier block (57). A cavity b is formed between the other side of the sealing plate (56) and the other side of the barrier block (57). A sliding cavity (7) is formed at the bottom end of the piston rod (44). The inner surface of the sliding cavity (7) is slidably connected to the outer surface of the rotating rod (52). A number of sliding grooves (9) are formed on the outer surface of the rotating rod (52). A number of sliding strips (10) are fixedly connected to the inner surface of the sliding cavity (7). The outer surface of the sliding strip (10) is slidably connected to the inner surface of the sliding groove (9).

2. The integrated rotary telescopic hydraulic cylinder according to claim 1, characterized in that, The piston moving assembly (4) includes a sliding oil cavity (43) inside the cylinder block (1). A piston block (45) is fixedly connected to the outer surface of the piston rod (44). The outer surface of the piston block (45) is slidably connected to the inner surface of the sliding oil cavity (43). A first oil port (41) communicated with the sliding oil cavity (43) is formed on one side of the cylinder head (2). A second oil port (42) communicated with the sliding oil cavity (43) is formed on one side of the cylinder base (3).

3. The integrated rotating and telescopic hydraulic cylinder according to claim 1, characterized in that, Inside the cylinder base (3) and on the outer surface of the rotating rod (52), there is a barrier sealing ring (6) for blocking hydraulic oil.

4. The integrated rotary and telescopic hydraulic cylinder according to claim 2, characterized in that, Inside the piston rod (44) and on the outer surface of the rotating rod (52), there is a sealing ring (8) for blocking hydraulic oil.

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