Hydraulic cylinder angle-limiting connecting device

Abstract

The utility model provides a hydraulic cylinder limited angle connecting device which comprises a movable column and a column cap body, the movable column is a piston rod head of a hydraulic cylinder, the movable column is connected with the column cap body, the movable column is a double-convex-layer spherical surface, and a double-concave-layer spherical surface corresponding to the double-convex-layer spherical surface is arranged in the column cap body. The double-convex-layer spherical surface of the plunger is connected with the double-concave-layer spherical surface of the plunger cap body, so that the plunger can adapt to the contact surface angle, change the stress angle and increase the contact area so as to reduce extrusion force and torsion during contact and ensure the connection stability; and the use safety of the hydraulic cylinder is protected by utilizing the angle limitation between the plunger and the plunger cap body.

Description

TECHNICAL FIELD

[0001] The utility model relates to contact connection structure technical field, concretely relates to a hydraulic cylinder angle limiting device. BACKGROUND

[0002] The connection structure is happening in life and engineering machinery at all times, and the connection between objects has many kinds, such as contact connection, and the oil cylinder of a certain mining company is a hydraulic piston oil cylinder, the piston rod of the oil cylinder needs to be connected with the wall body in work, and the irregular surface of the wall body can affect the stability of the equipment after contact.

[0003] The shape of the piston rod head of the prior art is divided into three kinds, flat head, round head or semicircular head, and when the piston rod head is connected with the irregular wall body, the stability of the equipment after contact is affected. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of how to improve the stability of the connection between the piston rod and the wall body.

[0005] The utility model solves the above technical problem through the following technical scheme:

[0006] The utility model provides a hydraulic cylinder angle limiting device, which comprises a movable column and a column cap body, the movable column is the piston rod head of a hydraulic cylinder, the movable column is connected with the column cap body, the movable column is a double-convex spherical surface, and the column cap body is provided with a double-concave spherical surface corresponding to the double-convex spherical surface.

[0007] Beneficial effects: the double-convex spherical surface of the movable column is connected with the double-concave spherical surface of the column cap body, the movable column can adapt to the contact surface angle, change the stress angle, increase the contact area, reduce the extrusion force and torsion force during contact, and ensure the stability of the connection; the angle between the movable column and the column cap body is limited, and the use safety of the hydraulic cylinder is protected.

[0008] Preferably, the double-convex spherical surface comprises a first spherical surface, the first spherical surface is connected with a second spherical surface through a first circular table, the first spherical surface and the second spherical surface can be combined to form a spherical body, and the surface area of the first spherical surface is greater than that of the second spherical surface.

[0009] Preferably, the column cap body comprises an end plate and a connecting piece, the connecting piece is connected with the end plate, the connecting piece is a cube, the connecting piece is connected with the movable column, the end plate is a cuboid, and the end plate is connected with an object.

[0010] Preferably, the connecting piece comprises screw holes and grooves, the screw holes are uniformly arranged on the circumference of the connecting piece, and the grooves are arranged in the middle of the connecting piece.

[0011] Preferably, the groove is a double concave spherical surface; the double concave spherical surface comprises a third spherical surface, the third spherical surface is connected with a fourth spherical surface through a second circular truncated cone, the fourth spherical surface is the same in shape and size with the second spherical surface, the second circular truncated cone is the same in shape and size with the first circular truncated cone, and the surface area of the third spherical surface is smaller than that of the first spherical surface.

[0012] Preferably, the movable column is sleeved with a pressing ring, the movable column is fixed on the connecting piece of the column cap body through bolts penetrating through the pressing ring, and the bolts are fixed in threaded holes.

[0013] Preferably, an assembling piece is arranged between the bolt and the pressing ring.

[0014] Beneficial effects: the assembling piece is arranged, so that the bolt and the pressing ring are more closely fixed, and thus the movable column can be more tightly fixed on the column cap body.

[0015] Preferably, the assembling piece comprises an O-ring, a check ring and a flat washer, and the flat washer, the check ring and the O-ring are sequentially arranged from left to right between the bolt and the pressing ring.

[0016] The hydraulic cylinder angle-limiting connecting device has the advantages that:

[0017] When the hydraulic cylinder works, the column cap body is connected with an object, when the movable column contacts with the column cap body, the hydraulic pressure can be converted into mechanical force, the angle between the movable column and the column cap body is automatically adjusted, and the angle is controlled within a reasonable range of the maximum contact angle according to actual conditions.

[0018] When the hydraulic cylinder angle-limiting connecting device is not used, the double convex spherical surface and the double concave spherical surface are connected, and the extrusion of the column cap body on the movable column due to free fall is also reduced, the hydraulic cylinder angle-limiting connecting device has wide application and can meet the use of most angle-limiting connecting structures. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is an explosion view of the hydraulic cylinder angle-limiting connecting device of the embodiment;

[0020] Fig. 2 is a structural schematic view of the hydraulic cylinder angle-limiting connecting device of the embodiment;

[0021] Fig. 3 is a rotating schematic view of the hydraulic cylinder angle-limiting connecting device of the embodiment. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model; in addition, the terms "first", "second" and "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. It should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] According to Figs. 1-3 As shown in the figure, the embodiment provides a kind of hydraulic cylinder angle limiting connection device, including piston rod head 10 and column cap body 20 of hydraulic cylinder, the piston rod head 10 is spherical, the piston rod head 10 is double convex layer spherical surface, the double convex layer spherical surface includes first spherical surface 11, first circular truncated cone 12 and second spherical surface 13, the first spherical surface 11 is connected by first circular truncated cone 12 with second spherical surface 13, the first circular truncated cone 12 includes upper bottom and lower bottom, the surface area of upper bottom is less than the surface of lower bottom, in the first circular truncated cone 12 of embodiment, upper bottom is connected with second spherical surface 13, and lower bottom is connected with first spherical surface 11, the first spherical surface 11 and second spherical surface 12 can be combined to form a sphere, and the surface area of first spherical surface 11 is greater than second spherical surface 12. When piston rod head 10 is assembled with column cap body 20 by double convex layer spherical surface, the angle and area size of double convex layer spherical surface are used to limit the activity rotating angle range of column cap body 20, to guarantee the stability of connection.

[0025] The column cap body 20 comprises an end plate 21 and a connecting piece, the end plate 21 is integrally formed with the connecting piece, the end plate 21 is a cuboid, which is connected with the object, can increase the contact area when connected, and ensures the stability of the device connection; and the connecting piece is a square, which is connected with the movable column 10.

[0026] The connecting piece comprises threaded holes 22 and grooves 23, the threaded holes 22 are uniformly arranged on the circumference of the connecting piece, and the grooves 23 are arranged in the middle of the connecting piece, the grooves 23 are connected with the movable column 10, and the grooves 23 are double concave spherical surfaces, the double concave spherical surfaces comprise a third spherical surface 231, a second circular truncated cone 232 and a fourth spherical surface 233, the third spherical surface 231 is connected with the fourth spherical surface 233 through the second circular truncated cone 232, and the second circular truncated cone 232 comprises an upper bottom surface and a lower bottom surface, the surface area of the upper bottom surface is smaller than that of the lower bottom surface, in the embodiment, the upper bottom surface of the second circular truncated cone 232 is connected with the third spherical surface 231, and the lower bottom surface is connected with the fourth spherical surface 233, the fourth spherical surface 233 is the same in shape and size as the second spherical surface 13, the second circular truncated cone 232 is the same in shape and size as the first circular truncated cone 12, and the surface area of the third spherical surface 231 is smaller than that of the first spherical surface. The grooves 23 can wrap 3 / 4 of the surface area of the movable column 10.

[0027] The movable column 10 is sleeved with a pressing ring 30, in the embodiment, the movable column 10 is fixed in the groove 23, is fixed on the connecting piece through the pressing ring 30, and then the bolt 40 is used to pass through the pressing ring 30, the bolt 40 is fixed in the threaded hole, so that the movable column 10 is fixed in the groove 23, the double convex spherical surface of the movable column 10 and the double concave spherical surface of the groove 23 are matched with each other, the contact size of the double-layer spherical surface is used to limit the rotation angle of the two in work, and the contact extrusion of the column cap body 20 on the movable column 10 due to gravity is reduced, so that the movable column 10 can be protected, and the object is also prevented from being damaged due to the too large rotation angle of the contact surface in work.

[0028] In order to make the bolt 40 and the pressing ring 30 more closely fixed, an assembly part is arranged between the bolt 40 and the pressing ring 30 in the embodiment, the assembly part comprises an O-shaped ring 31, a check ring 32 and a flat washer 33, and the flat washer 33, the check ring 32 and the O-shaped ring 31 are sequentially arranged from left to right between the bolt 40 and the pressing ring 30.

[0029] The double-convex spherical surface of the movable column 10 is connected with the double-concave spherical surface of the column cap body 20, the movable column 10 can adaptively contact the surface angle, change the stress angle, increase the contact area, reduce the extrusion force and the torsion force when contacting, and ensure the stability of the connection; the angle between the movable column 10 and the column cap body 20 is limited, and the use safety of the hydraulic cylinder is protected.

[0030] When the hydraulic cylinder is not used, the double-convex spherical surface and the double-concave spherical surface are connected, and the extrusion of the column cap body 20 on the movable column 10 due to gravity is also reduced, the hydraulic cylinder angle limiting connection device has a wide range of uses and can meet the use of most angle limiting connection structures.

[0031] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A hydraulic cylinder angle limit device, characterized by, The application relates to a piston rod head of a hydraulic cylinder, which comprises a piston rod head (10) and a column cap body (20), wherein the piston rod head (10) is connected with the column cap body (20), the piston rod head (10) is a biconvex spherical surface, and the column cap body (20) is provided with a biconcave spherical surface corresponding to the biconvex spherical surface.

2. The hydraulic cylinder angle limit link of claim 1, wherein, The biconvex spherical surface comprises a first spherical surface (11), the first spherical surface (11) is connected with a second spherical surface (13) through a first circular truncated cone (12), the first spherical surface (11) and the second spherical surface (12) can be combined to form a sphere, and the surface area of the first spherical surface (11) is larger than that of the second spherical surface (12).

3. The hydraulic cylinder angle limit link of claim 2, wherein, The column cap body (20) comprises an end plate (21) and a connecting piece, the connecting piece is connected with the end plate (21), the connecting piece is a square, the connecting piece is connected with the piston rod head (10), and the end plate (21) is a cuboid and is connected with an object.

4. The hydraulic cylinder angle limit link of claim 3, wherein, The connecting piece comprises threaded holes (22) and grooves (23), the threaded holes (22) are uniformly arranged on the circumference of the connecting piece, and the grooves (23) are arranged in the middle of the connecting piece.

5. The hydraulic cylinder angle limit link of claim 4, wherein, The groove (23) is a biconcave spherical surface; the biconcave spherical surface comprises a third spherical surface (231), the third spherical surface (231) is connected with a fourth spherical surface (233) through a second circular truncated cone (232), the fourth spherical surface (233) is the same in shape and size as the second spherical surface (13), the second circular truncated cone (232) is the same in shape and size as the first circular truncated cone (12), and the surface area of the third spherical surface (231) is smaller than that of the first spherical surface.

6. The hydraulic cylinder angle limit link of claim 3, wherein, The piston rod head (10) is provided with a pressing ring (30), the piston rod head (10) is fixed on the connecting piece of the column cap body (20) through a bolt (40) penetrating through the pressing ring (30), and the bolt (40) is fixed in the threaded hole (22).

7. The hydraulic cylinder angle limit link of claim 6, wherein, An assembling piece is arranged between the bolt (40) and the pressing ring (30).

8. The hydraulic cylinder angle limit link of claim 7, wherein, The assembling piece comprises an O-shaped ring (31), a check ring (32) and a flat washer (33), the flat washer (33), the check ring (32) and the O-shaped ring (31) are sequentially arranged from left to right between the bolt (40) and the pressing ring (30).

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