CN218913346U - Hydraulic locking device - Google Patents

Abstract

The utility model discloses a hydraulic locking device. Comprising the following steps: the sliding cavity is arranged in the middle of the shell, and a locking plate with a hollow part is arranged in the sliding cavity in a sliding way; a hydraulic locking cylinder is arranged on the side wall of the shell corresponding to the hollow part of the locking plate; the piston rod of the hydraulic locking cylinder is positioned in the hollow part of the locking plate, and two ends of the piston rod are propped against two side edges of the hollow part of the locking plate; the hydraulic locking cylinder drives the piston rod to move left and right so as to drive the locking plate to slide left and right in the shell; one end of the locking plate extends out of the shell, and a locking block is arranged on the end face of one end of the locking plate extending out of the shell. The hydraulic cylinder and the locking plate are in spherical-plane contact, so that the impact load borne by a moving object can be ensured not to cause the piston rod of the hydraulic cylinder to twist and other adverse conditions. The locking plate with larger size reduces the contact stress of the locking surface on one hand and is more convenient to replace on the other hand. The device adopts a travel switch, and the signal detection is reliable.

Description

Hydraulic locking device

Technical Field

The utility model relates to a hydraulic locking device.

Background

The mechanical equipment is often provided with a locking cylinder which is used for locking a movable object at a working position, the traditional locking cylinder is directly locked by a piston rod, the impact load of the movable object is directly transmitted to the piston rod, the locking cylinder is easy to have failure modes such as oil leakage and the like, and the service life of the locking cylinder is reduced. The diameter of the piston rod is limited, so that the contact stress between the piston locking rod and a moving object is quite large, and the conditions of serious abrasion, inconvenient replacement and the like are easy to occur. In addition, in an automatic control system, a locking/opening position signal is required, the pressure of a built-in proximity switch of a common hydraulic cylinder is high, and the built-in proximity switch is easy to damage and inconvenient to maintain; the external proximity switch can often have signal false alarm and other conditions in occasions with poor working conditions.

Disclosure of Invention

In view of the foregoing, an object of the present utility model is to provide a hydraulic locking device.

To achieve the above object, the hydraulic locking and detecting device of the present utility model includes:

the shell body is provided with a plurality of grooves,

a sliding cavity is arranged in the middle of the shell, and a locking plate with a hollow part is arranged in the sliding cavity in a sliding way;

a hydraulic locking cylinder is arranged on the side wall of the shell corresponding to the hollow part of the locking plate; the piston rod of the hydraulic locking cylinder is positioned in the hollow part of the locking plate, and two ends of the piston rod are propped against two side edges of the hollow part of the locking plate; the hydraulic locking cylinder drives the piston rod to move left and right so as to drive the locking plate to slide left and right in the shell;

one end of the locking plate extends out of the shell, and a locking block is arranged on the end face of one end of the locking plate extending out of the shell.

Further, the shell comprises a bottom plate and an outer frame arranged on the bottom plate; a sliding cavity matched with the locking plate is formed between the bottom plate and the outer frame.

Further, the locking block is a wedge block.

Further, an oil groove is arranged on the side surface, which is contacted with the shell, of the locking plate.

Further, a sensing bracket is arranged at the other end of the locking plate, and a progress limit switch and a return limit switch are arranged on the shell corresponding to the L-shaped sensing arm; the touch support presses the process limit switch when the locking plate advances to a preset position; the touch support presses the return limit switch when the locking plate retreats to a preset position.

Further, the sensing support is in an inverted L shape.

Further, the shell is arranged on the short bracket and the long bracket; the progress limit switch is arranged on the short bracket, and the return limit switch is arranged on the long bracket; the short bracket and the long bracket are respectively provided with a long hole for installing and adjusting the limit switch.

The hydraulic locking cylinder of the utility model adopts a hydraulic locking mode to ensure locking force (non-spring locking), a locking plate with larger size is added between the locking cylinder and the movable object, and the locking plate is arranged between the bottom plate and the outer frame and can only move transversely and back and forth. The hydraulic cylinder is in spherical-plane contact with the locking plate, so that the impact load borne by the moving object can be ensured not to cause the piston rod of the hydraulic cylinder to twist and other adverse conditions. The locking plate with larger size reduces the contact stress of the locking surface on one hand and is more convenient to replace on the other hand. The device adopts the travel switch, detects the position of the locking cylinder by skillfully setting the sensing bracket, has reliable signal detection and has no requirement on the working environment.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the hydraulic locking and detecting device of the present utility model.

Fig. 2 is a schematic view of the structure in another direction of fig. 1.

Fig. 3 is a schematic cross-sectional view of fig. 1.

Fig. 4 is a schematic structural view of the outer frame.

Fig. 5 is a schematic structural view of the base plate.

Fig. 6 is a schematic structural view of the hydraulic locking cylinder.

Fig. 7 is a schematic structural view of the locking plate.

Fig. 8 is a schematic view of the state at the time of locking.

Fig. 9 is a schematic view of the state at the time of opening.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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.

An embodiment of the present utility model, as shown in fig. 1 to 9, includes: the hydraulic locking device comprises an outer frame 1, a hydraulic locking cylinder 2 (a piston rod 2.1), a locking plate 3, a wedge block 4, a moving object 5, a bottom plate 6, an oil cup 7, a touch support 8, a short support 9, a travel switch 10, a switch bottom plate 11, a long support 12 and the like.

Wherein, frame 1 passes through the bolt to be installed on bottom plate 6, and the frame inboard fluting for install locking plate 3, fluting width and degree of depth and the width and the thickness looks adaptation of locking plate 3. The middle of the outer frame 1 is provided with a rectangular hole, and the size of the rectangular hole is obviously larger than the external size of the hydraulic locking cylinder 2. The end face of one side of the outer frame 1 is provided with a threaded hole for installing the short bracket 9 and the long bracket 12.

The bottom of the hydraulic locking cylinder 2 is provided with a round pin which is matched with a round hole on the bottom plate 6 for positioning, and then is arranged on the bottom plate 6 through bolts. The two ends of the piston rod 2.1 are spherical surfaces, the hydraulic locking cylinder 2 is provided with two oil ports, and the piston rod 2.1 moves left and right under the action of oil pressure at two sides.

The locking plate 3 is arranged between the outer frame 1 and the bottom plate 6, a rectangular hole is arranged in the middle of the locking plate 3, and the width of the rectangular hole is obviously larger than that of the hydraulic locking cylinder 2; the two end surfaces of the rectangular hole in the length direction are finish machining surfaces, and the length of the rectangular hole is slightly larger than that of the piston rod 2.1, so that the hydraulic locking cylinder 2 can be installed in the locking plate 3, and no large gap exists at two sides during reciprocating motion. The end part of one side of the locking plate 3 is provided with a step and a screw hole for installing the wedge block 4.

The four surfaces of the locking plate 3 except the left side and the right side are all matched sliding surfaces, so that oil grooves are formed in the four surfaces, two oil filling holes are respectively formed in the upper portion and the lower portion of the end portion of the other side of the locking plate 3, and each oil hole can convey oil to the corresponding oil grooves of the 3 surfaces through an oil duct. The side surface is also provided with screw holes for mounting the tactile bracket 8.

The wedge block 4 is arranged on the locking plate 3 by a screw, and the inclined plane is matched with the inclined plane of the movable object 5 to achieve the locking effect.

A groove is arranged on the bottom plate 6, and the width of the groove is matched with the width of the outer frame 1 to position the outer frame 1; screw holes for installing the outer frame 1 and the hydraulic locking cylinder 2 are respectively arranged on the groove surface; and a positioning hole matched with the round pin at the bottom of the hydraulic locking cylinder 2 is also formed.

The oil cup 7 is used for oiling the corresponding oil groove through the oil passage.

The tactile bracket 8 is mounted at the end of the locking plate 3 by a screw, and reciprocates left and right with the locking plate 3. The upper and lower inclined planes are arranged at the end part of the sensing support 8, the angle of the inclined planes meets the requirement of the guiding angle of the travel switch 10, and the upper and lower inclined planes respectively detect the locking (progress) and opening (return) positions of the moving object 5.

The short support 9 and the long support 12 are all installed on the outer frame 1 through screws, long holes are formed in the short support 9 and the long support 12 and are used for installing and adjusting the position of the switch bottom plate 11 so as to adjust the position of the travel switch 10, and detection accuracy and reliability are guaranteed.

The bottom plate 11 is mounted on the short bracket 9 and the long bracket 12 through screws, and threaded holes for mounting the travel switch 10 are also formed in the bottom plate.

Through the arrangement of the mechanism, the hydraulic cylinder is in spherical-plane contact with the locking plate, so that the impact load born by the moving object can be ensured not to cause the piston rod of the hydraulic cylinder to twist and other adverse conditions. The locking plate with larger size reduces the contact stress of the locking surface on one hand and is more convenient to replace on the other hand. The device adopts the travel switch, detects the position of the locking cylinder by skillfully setting the sensing bracket, has reliable signal detection and has no requirement on the working environment.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (2)

1. A hydraulic locking device, comprising:

the shell body is provided with a plurality of grooves,

a sliding cavity is arranged in the middle of the shell, and a locking plate with a hollow part is arranged in the sliding cavity in a sliding way;

a hydraulic locking cylinder is arranged on the side wall of the shell corresponding to the hollow part of the locking plate; the piston rod of the hydraulic locking cylinder is positioned in the hollow part of the locking plate, and two ends of the piston rod are propped against two side edges of the hollow part of the locking plate; the hydraulic locking cylinder drives the piston rod to move left and right so as to drive the locking plate to slide left and right in the shell;

one end of the locking plate extends out of the shell, and a locking block is arranged on the end face of one end of the locking plate extending out of the shell.

2. The hydraulic locking device of claim 1 wherein the housing comprises a base plate and an outer frame disposed on the base plate; a sliding cavity matched with the locking plate is formed between the bottom plate and the outer frame.

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