CN218992008U

CN218992008U - High-bearing double-rack swing cylinder

Info

Publication number: CN218992008U
Application number: CN202223487142.4U
Authority: CN
Inventors: 张长林; 严涛; 程明华; 张鑫
Original assignee: Jiangsu Hualin Pneumatic Hydraulic Whole Set Equipment Co ltd
Current assignee: Jiangsu Hualin Pneumatic Hydraulic Whole Set Equipment Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-09
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a high-bearing double-rack swinging cylinder, which comprises an upper cylinder barrel and a lower cylinder barrel, wherein the cylinder barrel is a cylinder body with two open ends, and the two open ends are sealed through end covers; the cylinder body of the cylinder barrel is provided with symmetrical notch sections in the vertical direction, and the notch sections are divided into four groups from top to bottom; the two groups of notch sections on the outer side are internally provided with a box body, and the box body is provided with an anti-rotation block; a rack piston is arranged in the cylinder barrel, racks are arranged on the opposite sides of the middle part of the rack piston and are exposed in two groups of notch sections in the middle part, and a supporting ring is arranged between the rack piston and the box body; a gear is arranged between the upper cylinder barrel and the lower cylinder barrel and meshed with the rack, and the periphery of the gear is sealed and wrapped by a shell; the two ends of the lower cylinder are provided with oil ways communicated with the inner cavity of the shell. According to the utility model, by adding the supporting ring, the damage of the rack piston caused by strain is reduced; simultaneously, friction is reduced, and the overall service life is prolonged.

Description

High-bearing double-rack swing cylinder

Technical Field

The utility model relates to the field of air cylinders, in particular to a high-bearing double-rack swing cylinder.

Background

The principle of the swing cylinder is that the reciprocating motion of the hydraulic cylinder drives the gear through the rack, the reciprocating motion is converted into forward and reverse swing rotation of the gear shaft, and meanwhile, the thrust of the reciprocating cylinder is converted into output torque of the gear shaft.

At present, an auxiliary supporting structure is arranged between a rack piston and a box body of the traditional double-rack swing cylinder, so that friction can occur between the rack piston and the box body, and the damage of the rack piston caused by pulling is increased; and the service life of the swinging cylinder is also reduced.

Disclosure of Invention

The utility model aims to provide a high-bearing double-rack swinging cylinder which has long service life and can prevent strain.

The purpose of the utility model is realized in the following way: the high-bearing double-rack swinging cylinder comprises an upper cylinder barrel and a lower cylinder barrel, wherein the cylinder barrel is a cylinder body with two open ends, and the two open ends are sealed through end covers; symmetrical notch sections are formed in the vertical direction of the cylinder body of the cylinder barrel, and the notch sections are divided into four groups from top to bottom; the two groups of notch sections on the outer side are internally provided with a box body, and the box body is provided with anti-rotation blocks; a rack piston is arranged in the cylinder barrel, racks are arranged on opposite sides of the middle part of the rack piston and are exposed in two groups of notch sections in the middle part, and a supporting ring is arranged between the rack piston and the box body; a gear is arranged between the upper group of cylinder barrels and the lower group of cylinder barrels and meshed with the rack, and the periphery of the gear is sealed and wrapped by a shell; and oil ways which are communicated with the inner cavity of the shell are arranged at the two ends of the cylinder barrel of the lower group.

Preferably, the periphery of the end part of the rack piston is provided with a hole ring, a T-shaped ring and an O-shaped ring;

preferably, the cross section of the box body is convexly embedded in two groups of notch sections close to the outer side, the box body and the cylinder barrel are fixedly clamped through a flange, and an O-shaped ring is arranged at the joint of the inner side surface of the box body and the outer side surface of the cylinder barrel.

Preferably, the shell is embedded in two groups of notch sections in the middle, the shell and the cylinder barrel are fixedly clamped through a flange, and an O-shaped ring is arranged at the joint of the inner side surface of the shell and the outer side surface of the cylinder barrel.

Preferably, the inner surface of the box body is provided with symmetrical grooves, and the two groups of supporting rings are symmetrically sleeved on the rack piston and are arranged in the grooves; the supporting ring is not in contact with the gear.

Preferably, oil ports are formed in two sides of the shell, channels are formed in end covers on two sides of the cylinder barrel of the lower group, and the oil ports are connected with the channels through oil ways.

Preferably, deep groove ball bearings are arranged between the axial end of the gear and the cylinder barrel and on two sides of the rack piston, and the deep groove ball bearings are pressed by a gland; o-shaped rings are arranged between the gland and the gear and the gland are respectively arranged between the gland and the gland between the gland.

Compared with the prior art, the utility model has the following advantages:

1. compared with the traditional double-rack swing cylinder structure, the novel double-rack swing cylinder structure has the advantages that the supporting rings are additionally arranged between the box body and the rack piston, and the supporting rings are respectively arranged at two sides of the notch section, so that friction force between the rack piston and the box body is effectively reduced, and strain damage is reduced; meanwhile, the supporting ring and the rack piston are coaxially arranged, so that the rack can be effectively guided to do linear reciprocating motion, the supporting ring is also in conflict with the box body, the box body can be effectively supported, bottom protection is provided for the box body, and the service life is prolonged.

2. The internal hydraulic oil is communicated through an oil way, so that the internal hydraulic oil can be extruded and exchanged through the oil way when the rack pistons of the lower group move left and right; when the lower rack piston moves leftwards, hydraulic oil on the left side of the rack piston is extruded to the right side of the rack piston through an oil way to push the hydraulic oil to be converted, so that the driving force of the rack piston can be further reduced, and the running speed of the upper rack piston and the lower rack piston can be accelerated.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic side view of the present utility model.

The anti-rotation device comprises a cylinder barrel 1, an end cover 2, a notch section 3, a box body 4, a groove 41, a rack piston 5, a rack 6, a supporting ring 7, a gear 8, a shell 9, an oil circuit 10, a ring for 11 holes, a ring for 12T, a ring for 13O, a flange 14, an oil port 15, a channel 16, a deep groove ball bearing 17, a gland 18 and an anti-rotation block 19.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

It should be noted that, in the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," "overhang," and the like do not denote that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the high-bearing double-rack swinging cylinder comprises an upper cylinder barrel 1 and a lower cylinder barrel 1, wherein the cylinder barrels 1 are cylinder bodies with two open ends, the two open ends 1 are sealed through end covers 2, and the end covers and the cylinder bodies are connected by bolts, so that later disassembly and maintenance are facilitated; the cylinder body of the cylinder barrel 1 is provided with symmetrical notch sections 3 in the vertical direction, and four groups of the notch sections 3 are two groups at the outer side and two groups at the middle part from top to bottom; the two groups of notch sections 3 on the outer side are internally provided with a box body 4, the box body 4 is provided with an anti-rotation block 19, and the anti-rotation block is provided with bolts which are fixedly connected with an external structure; a rack piston 5 is arranged in the cylinder barrel 1, racks 6 are arranged on opposite sides of the middle part of the rack piston 5 and are exposed in the two groups of notch sections 3 in the middle part, a supporting ring 7 is arranged between the rack piston 5 and the box body 4, the supporting ring reduces the friction force of the oil cylinder, and the racks are guided to do linear reciprocating motion so as to support the box body; a gear 8 is arranged between the upper cylinder barrel 1 and the lower cylinder barrel 1 and meshed with the rack 6, the periphery of the gear 8 is sealed and wrapped by a shell 9, and the gear rotates to drive the upper rack piston and the lower rack piston to operate; the two ends of the lower cylinder barrel 1 are provided with oil ways 10 which are communicated with the inner cavity of the shell 9.

The periphery of the end part of the rack piston 5 is provided with a hole ring 11, a T-shaped ring 12 and an O-shaped ring 13, a sealing ring group is used for enhancing the tightness between the end part of the rack piston and the cylinder barrel, and meanwhile, the T-shaped ring can effectively provide support for the operation of the rack piston.

The section of the box body 4 is convexly embedded in the notch section 3 near the outer side, the box body 4 and the cylinder barrel 1 are fixedly clamped through the flange 14, the flange can be fixed again between the flange and the box body by adopting bolts after the flange is rotationally fixed, and the joint of the inner side surface of the box body 4 and the outer side surface of the cylinder barrel is provided with an O-shaped ring 13 which is used for increasing the tightness.

The shell 9 is embedded in the two groups of notch sections 3 in the middle, the shell 9 and the cylinder barrel 1 are fixedly clamped through the flange 14, the flange and the shell can be fixed again through bolts after the flange is rotationally fixed, an O-shaped ring 13 is arranged at the joint of the inner side surface of the shell 9 and the outer side surface of the cylinder barrel, and the O-shaped ring is used for improving the tightness.

The inner surface of the box body 4 is provided with symmetrical grooves 41, the supporting rings 7 are two groups of symmetrically sleeved on the rack piston 5 and are arranged in the grooves 41, and two ends of each supporting ring respectively abut against the cylinder barrel and the grooves; the supporting ring 7 is not in contact with the gear 8, so that when the gear is prevented from rotating, after the gear is limited in the groove, the supporting ring cannot move axially, and the supporting ring is prevented from blocking the normal operation of the gear.

The two sides of the shell 9 are provided with oil ports 15, the end covers 2 on the two sides of the lower group cylinder barrel 1 are provided with channels 16, and the oil ports 15 are connected with the channels 16 through oil ways 10.

A deep groove ball bearing 17 is arranged between the axial end of the gear 8 and the cylinder barrel 1 and at two sides of the rack piston 5, so that the smoothness of gear rotation is improved; the deep groove ball bearing 17 is pressed by a pressing cover 18; o-shaped rings 13 are arranged between the gland 18 and the gear 8 as well as between the gland and the cylinder barrel 1, and the O-shaped rings increase the tightness.

The working principle of the utility model is explained as follows: the supporting rings are added between the box body and the rack piston, and the two groups of supporting rings are respectively arranged at two sides of the notch section, so that friction force between the rack piston and the box body is effectively reduced, and strain damage is reduced; meanwhile, the supporting ring and the rack piston are coaxially arranged, so that the rack can be effectively guided to do linear reciprocating motion, the supporting ring also props against the box body, the box body can be effectively supported, bottom protection is provided for the box body, and the service life is prolonged; the internal hydraulic oil is communicated through an oil way, so that when the lower group of rack pistons move left and right, the internal hydraulic oil can further reduce the driving force of the rack pistons and accelerate the running speed of the upper rack piston and the lower rack piston.

The above examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the spirit and scope of the present utility model. Various modifications and improvements of the technical scheme of the present utility model will fall within the protection scope of the present utility model without departing from the design concept of the present utility model, and the technical content of the present utility model is fully described in the claims.

Claims

1. The high-bearing double-rack swinging cylinder is characterized by comprising an upper cylinder barrel and a lower cylinder barrel, wherein the cylinder barrels are cylinder bodies with two open ends, and the two open ends are sealed through end covers; symmetrical notch sections are formed in the vertical direction of the cylinder body of the cylinder barrel, and the notch sections are divided into four groups from top to bottom; the two groups of notch sections on the outer side are internally provided with a box body, and the box body is provided with anti-rotation blocks; a rack piston is arranged in the cylinder barrel, racks are arranged on opposite sides of the middle part of the rack piston and are exposed in two groups of notch sections in the middle part, and a supporting ring is arranged between the rack piston and the box body; a gear is arranged between the upper group of cylinder barrels and the lower group of cylinder barrels and meshed with the rack, and the periphery of the gear is sealed and wrapped by a shell; and oil ways which are communicated with the inner cavity of the shell are arranged at the two ends of the cylinder barrel of the lower group.

2. The high-load-bearing double-rack oscillating cylinder according to claim 1, wherein the outer periphery of the end portion of the rack piston is provided with a hole ring, a T-ring and an O-ring.

3. The high-bearing double-rack swing cylinder according to claim 1, wherein the cross section of the box body is convexly embedded in two groups of notch sections close to the outer side, the box body and the cylinder barrel are fixedly clamped through a flange, and an O-shaped ring is arranged at the joint of the inner side surface of the box body and the outer side surface of the cylinder barrel.

4. The high-bearing double-rack swing cylinder according to claim 1, wherein the shell is embedded in two groups of notch sections in the middle, the shell and the cylinder barrel are fixedly clamped through a flange, and an O-shaped ring is arranged at the joint of the inner side surface of the shell and the outer side surface of the cylinder barrel.

5. The high-bearing double-rack swing cylinder according to claim 1, wherein the inner surface of the box body is provided with symmetrical grooves, and the supporting rings are two groups of symmetrical sleeves which are sleeved on the rack piston and are arranged in the grooves; the supporting ring is not in contact with the gear.

6. The high-bearing double-rack swing cylinder according to claim 1, wherein oil ports are formed in two sides of the shell, channels are formed in end covers on two sides of the cylinder barrel of the lower group, and the oil ports are connected with the channels through oil paths.

7. The high-bearing double-rack swing cylinder according to claim 1, wherein deep groove ball bearings are arranged between the axial end of the gear and the cylinder barrel and on two sides of the rack piston, and the deep groove ball bearings are pressed by a pressing cover; o-shaped rings are arranged between the gland and the gear and the gland are respectively arranged between the gland and the gland between the gland.