CN217842194U - Hydraulic cylinder for four-way shuttle - Google Patents

Abstract

The utility model provides a hydraulic cylinder for a four-way shuttle, which comprises a cylinder body, a piston arranged in the cylinder body and connected with the cylinder body in a sliding way, a piston rod fixedly connected with the piston, and a guide sleeve which is arranged in the cylinder body and sleeved outside the piston rod and fixedly connected with the cylinder body; the hydraulic cylinder further comprises a guide shell fixed relative to the cylinder body, a righting rod parallel to the guide rod is connected in the guide shell in a sliding mode, the righting rod is fixed relative to the piston rod and can move synchronously along with the piston rod, a magnetic ring is installed on the righting rod, and a Y-shaped sealing ring and an O-shaped sealing ring are arranged between the inner wall of the guide sleeve and the outer wall of the piston rod. The utility model discloses a setting is parallel with the piston rod and is moving together thereupon rightting the pole, and rightting pole and uide bushing play the guide effect to the vertical motion of piston rod together, establish the magnetic ring on righting the pole moreover, and the length of multiplicable uide bushing from this sets up the twice sealed, and the rigidity is better when the quadriversal shuttle operation, reduces the amplitude of oscillation of piston rod, has guaranteed hydraulic system's stability more.

Description

Hydraulic cylinder for four-way shuttle

Technical Field

The utility model belongs to the pneumatic cylinder field, concretely relates to pneumatic cylinder for quadriversal shuttle.

Background

With the development of dense storage and automatic logistics, the four-way shuttle type automatic dense warehousing system is more and more applied and has been widely accepted by the market. The system has the advantages of a shuttle car goods shelf warehouse and a roadway type automatic three-dimensional warehouse, is high in storage space utilization rate, flexible in goods and materials storage and taking, high in automation degree, few in required operating personnel, and capable of meeting construction requirements of various warehouse conditions. The four-way shuttle vehicle is used as a logistics carrier of the system, and the reliability of the four-way shuttle vehicle plays a crucial role in the whole system.

The four-way shuttle vehicle has a four-way driving function, and can be divided into a mechanical type and a hydraulic type at present. The hydraulic four-way shuttle vehicle has strong load capacity and small volume, and is widely applied to heavy-duty warehouses. The four-way shuttle can run in the rail all around, and the jacking of goods is also realized by four jacking hydraulic cylinders because of the four reversing hydraulic cylinders when reversing. However, the hydraulic four-way shuttle vehicle is compact in structure, and the height of the hydraulic cylinder is limited due to the fact that the thickness of the vehicle body is too thin (the thickness is only 136 mm); and because need install the magnetic ring additional on the piston of pneumatic cylinder or piston rod (its effect is the upper and lower spacing of pneumatic cylinder piston rod), consequently after guaranteeing the sufficient stroke of the piston rod of pneumatic cylinder for the uide bushing of pneumatic cylinder is short excessively, and the sealed Y type sealing washer that only can add between uide bushing and the piston rod moreover.

Because the guide sleeve of the existing hydraulic cylinder is too short, the guide function of the guide sleeve is weak, and particularly when the four-way shuttle car is fully loaded, frequent shaking of a piston rod of the hydraulic cylinder can be caused by frequent acceleration and deceleration, so that the four-way shuttle car can swing left and right when running in a jacking state; and because only one Y-shaped sealing ring is sealed between the guide sleeve and the piston rod, when the piston rod of the hydraulic cylinder shakes, the sealing ring is possibly sealed and loses efficacy, so that oil leakage of the hydraulic cylinder is caused, the four-way shuttle car breaks down due to oil leakage of the hydraulic cylinder, and the reliability is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model aims at providing a pneumatic cylinder for four-way shuttle.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydraulic cylinder for a four-way shuttle car comprises a cylinder body with a first cavity, a piston arranged in the first cavity of the cylinder body and connected with the cylinder body in a sliding manner, a piston rod fixedly connected with the piston, and a guide sleeve which is positioned in the first cavity and sleeved outside the piston rod and fixedly connected with the cylinder body, wherein a first sealing structure is arranged between the inner wall of the guide sleeve and the outer wall of the piston rod, and a second sealing structure is arranged between the outer wall of the guide sleeve and the inner wall of the cylinder body; the hydraulic cylinder further comprises a guide shell which is fixed relative to the cylinder body and is provided with a second cavity, the center line of the second cavity is parallel to the center line of the first cavity, a centering rod is connected in the second cavity of the guide shell in a sliding mode, the centering rod is fixed relative to the piston rod and can move synchronously along with the piston rod, and a magnetic ring is installed on one of the piston, the piston rod and the centering rod.

Among the above-mentioned technical scheme, through setting up the pole of righting that moves with the piston rod is parallel and together with the motion thereupon, the pole of righting plays the guide effect with the guide sleeve to the vertical motion of piston rod together, and the rigidity is better when the four-way shuttle operation, reduces the swing range of piston rod, has guaranteed hydraulic system's stability more.

The utility model discloses an in the preferred embodiment, it has wear-resisting guide pin bushing to go back the rigid coupling on the inner wall of second cavity, and the centering rod inserts in the wear-resisting guide pin bushing and sliding connection with it.

Among the above-mentioned technical scheme, wear-resisting guide pin bushing is more wear-resisting, can reduce the wearing and tearing of direction shell through setting up wear-resisting guide pin bushing, reaches non-maintaining effect, prolongs the life of direction shell.

The utility model discloses an among the preferred embodiment, the top fixedly connected with of direction shell and the gland of wear-resisting guide pin bushing butt, wear-resisting guide pin bushing passes through the gland pressure to be established in the second cavity.

In a preferred embodiment of the present invention, a third sealing structure is provided between the outer wall of the piston and the inner wall of the cylinder, and the third sealing structure is a gray ring and/or an O-ring installed on the outer wall of the piston.

Among the above-mentioned technical scheme, increase the leakproofness of piston and cylinder body inner wall through setting up third seal structure, guarantee the sealed of two cavities of piston and cylinder body bottom and piston and cylinder body top, avoid the hydraulic oil between two cavities to ooze each other, improve the accuracy of the piston rod motion stroke of this pneumatic cylinder.

In a preferred embodiment of the present invention, the guide housing is integrally formed with the cylinder body, and the second cavity is formed on the cylinder body; or the guide shell and the cylinder body are arranged separately and then fixedly connected into a whole.

The utility model discloses an in another kind of preferred embodiment, magnetic ring and righting pole fixed connection, first seal structure is including installing first sealing washer and the second sealing washer on the uide bushing inner wall, and the length direction interval setting of uide bushing is followed to first sealing washer and second sealing washer.

In the technical scheme, the magnetic ring is arranged on the righting rod, so that the length of the guide sleeve can be increased, the rigidity is better when the four-way shuttle car runs, and the swinging amplitude of the piston rod is further reduced; and first seal structure is sealed for the twice, improves sealed effect, avoids the pneumatic cylinder oil leak, improves the stability and the durability of four-way shuttle whole car greatly.

In another preferred embodiment of the present invention, the first seal ring is disposed inside the second seal ring, the first seal ring is a Y-shaped seal ring, and the second seal ring is an O-shaped seal ring.

In another preferred embodiment of the present invention, the end of the centering rod near the bottom of the guiding shell is detachably connected with a magnetic ring mounting seat, and the magnetic ring is mounted on the magnetic ring mounting seat.

In another preferred embodiment of the present invention, the second sealing structure is a third sealing ring installed on the outer wall of the guide sleeve.

In another preferred embodiment of the present invention, the third seal ring is an O-ring.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic front sectional view of a hydraulic cylinder for a four-way shuttle according to an embodiment.

Fig. 2 is a schematic top view of the hydraulic cylinder for a four-way shuttle according to the embodiment.

Reference numerals in the drawings of the specification include: the device comprises a cylinder body 10, a first cavity 101, a piston 11, a piston rod 12, a guide sleeve 13, a guide shell 20, a second cavity 201, a centering rod 21, a blind hole 211, a wear-resistant guide sleeve 22, a magnetic ring mounting seat 23, a gland 24, a first sealing ring 31, a second sealing ring 32, a third sealing ring 33, a Gray ring 34, an O-shaped sealing ring 35, a dust ring 36, a magnetic ring 40 and a mounting groove 41.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The utility model provides a pneumatic cylinder for quadriversal shuttle, as shown in fig. 1 and fig. 2 the utility model discloses an among the preferred embodiment, this pneumatic cylinder is including the cylinder body 10 that has first cavity 101, establish in the first cavity 101 of cylinder body 10 and with cylinder body 10 sliding connection's piston 11, with the piston rod 12 of piston 11 rigid coupling and be located first cavity 101 and the cover establish piston rod 12 outer with cylinder body 10 fixed connection's uide bushing 13, uide bushing 13 plays the guide effect, also as the end cover of this pneumatic cylinder. A first sealing structure for sealing is arranged between the inner wall of the guide sleeve 13 and the outer wall of the piston rod 12, and a second sealing structure for sealing is arranged between the outer wall of the guide sleeve 13 and the inner wall of the cylinder body 10.

The hydraulic cylinder further comprises a guide housing 20 fixed relative to the cylinder body 10 and having a second chamber 201, the centerline of the second chamber 201 being parallel to the centerline of the first chamber 101. According to practical situations, the guide shell 20 can be integrally processed with the cylinder body 10, and the second cavity 201 is arranged on the cylinder body 10; or the guide shell 20 and the cylinder body 10 are separately arranged and then fixedly connected into a whole, such as welding or bolt connection. A righting rod 21 is slidably connected in the second cavity 201 of the guide shell 20, and the righting rod 21 is fixed relative to the piston rod 12 and can move synchronously with the piston rod 12.

Wherein, a magnetic ring 40 is installed on one of the piston 11, the piston rod 12 and the righting rod 21, a magnetic ring detection switch is installed on the hydraulic cylinder or the outer side thereof, for example, as shown in fig. 2, an installation groove 41 for installing the magnetic ring detection switch corresponding to the magnetic ring 40 is installed on the outer wall of the cylinder body 10 or the guide shell 20. The piston rod 12 is limited up and down by arranging the magnetic ring 40 and the magnetic ring detection switch, which are prior art and will not be described in detail herein.

By adopting the technical scheme, when in use, the righting rod 21 is fixedly connected with an element to be driven by the hydraulic cylinder through the threaded hole in the top part of the righting rod and the piston rod 12, so that the righting rod 21 moves up and down along with the piston rod 12. The righting rod 21 and the guide sleeve 13 play a role in guiding the up-and-down movement of the piston rod 12, so that the rigidity is better when the four-way shuttle car runs, the swing amplitude of the piston rod 12 is reduced, and the stability of a hydraulic system is further ensured. The utility model discloses a pneumatic cylinder increases behind pole 21 of righting to the height and the thickness of pneumatic cylinder have not been changed, have only changed the width of pneumatic cylinder, do not influence the installation and the use of pneumatic cylinder.

In another preferred embodiment, the magnetic ring 40 is fixedly connected with the righting rod 21, the first sealing structure comprises a first sealing ring 31 and a second sealing ring 32 which are installed on the inner wall of the guide sleeve 13, and the first sealing ring 31 and the second sealing ring 32 are arranged at intervals along the length direction of the guide sleeve 13. The first seal ring 31 is disposed inside the second seal ring 32 (i.e., the first seal ring 31 is located between the piston 11 and the second seal ring 32), the first seal ring 31 is a Y-shaped seal ring and is made of rubber, and the second seal ring 32 is an O-shaped seal ring and is also made of rubber. Preferably, a dust ring 36 is further disposed between the inner wall of the guide sleeve 13 and the outer wall of the piston rod 12, and the dust ring 36 is also made of rubber to prevent external dust from entering the hydraulic cylinder.

In the embodiment, the magnetic ring 40 is arranged on the righting rod 21, so that the length of the guide sleeve 13 can be increased under the condition that the height of the hydraulic cylinder and the motion stroke of the piston rod 12 are not changed, the rigidity is better when the four-way shuttle car runs, and the swing amplitude of the piston rod 12 is further reduced; and because the length of uide bushing 13 increases, have the space of installation 0 type sealing washer between Y type sealing washer and the dust ring 36 for first seal structure has increased one 0 type sealing washer on the basis that Y type sealing washer is sealed and has sealed, and the twice is sealed, improves sealed effect, avoids the pneumatic cylinder oil leak, improves the stability and the incorruptibility of four-way shuttle whole car greatly.

In another preferred embodiment, the end of the centering rod 21 close to the bottom of the guide housing 20 is detachably connected with a magnetic ring mounting seat 23, a magnetic ring 40 is installed on the outer wall of the magnetic ring mounting seat 23, for example, the bottom of the centering rod 21 has a threaded blind hole 211, and the magnetic ring mounting seat 23 is in threaded connection with the threaded blind hole 211.

In another preferred embodiment, the second sealing structure is a third sealing ring 33 mounted on the outer wall of the guide sleeve 13, and the third sealing ring 33 is an O-ring. Because the static seal is arranged between the outer wall of the guide sleeve 13 and the inner wall of the cylinder body 10, one O-shaped sealing ring can meet the sealing requirement generally, and it needs to be noted that when one O-shaped sealing ring cannot meet the sealing requirement, two O-shaped sealing rings can be arranged.

In another preferred embodiment, a third sealing structure is provided between the outer wall of the piston 11 and the inner wall of the cylinder 10, and the third sealing structure includes a gurley ring 34 and/or an O-ring 35 mounted on the outer wall of the piston 11.

In another preferred embodiment, a wear-resistant guide sleeve 22 is further fixed to the inner wall of the second cavity 201, and the centering rod 21 is inserted into the wear-resistant guide sleeve 22 and slidably connected thereto. Preferably, the wear-resistant guide sleeve 22 is a graphite copper sleeve, and the wear of the guide shell 20 can be reduced by arranging the wear-resistant guide sleeve 22, so that the dual functions of wear resistance and maintenance-free are achieved, and the service life of the guide shell 20 is prolonged. The top of the guide shell 20 is fixedly connected with a gland 24 which is abutted to the top of the wear-resistant guide sleeve 22, the gland 24 is connected with the guide shell 20 through bolts, and the wear-resistant guide sleeve 22 is pressed in the second cavity 201 through the gland 24.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A hydraulic cylinder for a four-way shuttle car is characterized by comprising a cylinder body with a first cavity, a piston arranged in the first cavity of the cylinder body and connected with the cylinder body in a sliding manner, a piston rod fixedly connected with the piston, and a guide sleeve which is arranged in the first cavity and sleeved outside the piston rod and fixedly connected with the cylinder body, wherein a first sealing structure is arranged between the inner wall of the guide sleeve and the outer wall of the piston rod, and a second sealing structure is arranged between the outer wall of the guide sleeve and the inner wall of the cylinder body;

the hydraulic cylinder further comprises a guide shell which is fixed relative to the cylinder body and provided with a second cavity, the center line of the second cavity is parallel to the center line of the first cavity, a righting rod is connected in the second cavity of the guide shell in a sliding mode, the righting rod is fixed relative to the piston rod and can move synchronously with the piston rod, and a magnetic ring is installed on one of the piston, the piston rod and the righting rod.

2. The hydraulic cylinder for a four-way shuttle according to claim 1, wherein a wear-resistant guide sleeve is further fixedly connected to the inner wall of the second cavity, and the centering rod is inserted into the wear-resistant guide sleeve and is slidably connected with the wear-resistant guide sleeve.

3. The hydraulic cylinder for a four-way shuttle according to claim 2, wherein a gland abutting against the wear-resistant guide sleeve is fixedly connected to the top of the guide shell, and the wear-resistant guide sleeve is pressed in the second cavity through the gland.

4. The hydraulic cylinder for a four-way shuttle according to claim 1, wherein a third sealing structure is arranged between the outer wall of the piston and the inner wall of the cylinder body, and the third sealing structure is a Gray ring and/or an O-shaped sealing ring arranged on the outer wall of the piston.

5. The hydraulic cylinder for a four-way shuttle according to claim 1, wherein the guide housing is integrally formed with the cylinder body, and the second cavity is formed in the cylinder body;

or the guide shell and the cylinder body are arranged separately and then fixedly connected into a whole.

6. The hydraulic cylinder for a four-way shuttle according to any one of claims 1 to 5, wherein the magnetic ring is fixedly connected with the righting rod, the first sealing structure comprises a first sealing ring and a second sealing ring which are arranged on the inner wall of the guide sleeve, and the first sealing ring and the second sealing ring are arranged at intervals along the length direction of the guide sleeve.

7. The hydraulic cylinder for a four-way shuttle according to claim 6, wherein the first seal ring is disposed inside the second seal ring, the first seal ring is a Y-shaped seal ring, and the second seal ring is an O-shaped seal ring.

8. The hydraulic cylinder for a four-way shuttle according to claim 6, wherein the end of the righting rod near the bottom of the guide shell is detachably connected with a magnetic ring mounting seat, and the magnetic ring is mounted on the magnetic ring mounting seat.

9. The hydraulic cylinder for a four-way shuttle according to any one of claims 1 to 5, wherein said second sealing structure is a third sealing ring mounted on an outer wall of said guide sleeve.

10. The hydraulic cylinder for a four-way shuttle according to claim 9, wherein the third seal ring is an O-ring seal.

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