CN213653586U - Anti-free-falling supporting mechanism - Google Patents

Abstract

The utility model provides a prevent falling formula supporting mechanism certainly, the supporting mechanism includes the cylinder that is used for installing on first part and installs in the cylinder and at the telescopic bracing piece of predetermined length within range, the first end of bracing piece far away from the cylinder has the mounting structure that is used for installing to the second part, the first end pivot of bracing piece is installed and is extended the predetermined distance towards the cylinder and prevent falling support piece, the free rotation end of preventing falling support piece is provided with the support end that is used for supporting on the cylinder; the cylinder barrel is provided with a thrust part for abutting against a support end of the anti-falling support part at the end part close to the second part. The jacking mechanism prevents the second component from falling due to self weight and leakage of liquid or gas in the jacking mechanism, and improves safety.

Description

Anti-free-falling supporting mechanism

Technical Field

The utility model relates to the technical field of machinery, especially, relate to an anti-free fall formula supporting mechanism.

Background

In the existing engineering equipment, a supporting mechanism is a necessary part for realizing specific work, and the supporting mechanism can be used as a supporting mechanism for supporting the engineering mechanical equipment when being applied to various engineering mechanical equipment such as a hydraulic jacking mechanism, a pneumatic jacking mechanism and the like. The hydraulic jacking mechanism converts pressure energy of liquid into mechanical energy, the pneumatic jacking mechanism converts pressure energy of gas into mechanical energy, and the hydraulic jacking mechanism and the pneumatic jacking mechanism are generally used in occasions needing to realize reciprocating linear motion.

Because the hydraulic jacking mechanism and the air pressure jacking mechanism have strong bearing capacity, the supporting mechanism is generally applied to occasions needing to jack heavier equipment, such as a cab in an excavator. The existing supporting mechanism for jacking the cab of the excavator can generate the condition that the cab slowly and automatically falls back under the self-weight of the cab and the leakage effect of internal hydraulic oil or gas, so that potential safety hazards are generated. In order to solve the problem, generally, after the cab is jacked up, a support is manually additionally arranged between the cab and a jacking mechanism; at this time, in order to facilitate installation, a sufficient installation space needs to be reserved, and the safety of operators cannot be guaranteed in the installation process, so that operation is inconvenient. Therefore, how to prevent the support mechanism from falling during the support process so as to ensure the safety of personnel is a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an anti-falling supporting mechanism to solve one or more problems existing in the prior art.

According to one aspect of the utility model, a self-falling prevention support mechanism is disclosed, the support mechanism comprises a cylinder barrel for mounting on a first component and a support rod which is mounted in the cylinder barrel and is telescopic in a preset length range, a first end of the support rod far away from the cylinder barrel is provided with a mounting structure for mounting to a second component,

an anti-falling support piece extending towards the cylinder barrel for a preset distance is mounted at the first end of the support rod through a pivot, and a support end used for being supported on the cylinder barrel is arranged at the free rotation tail end of the anti-falling support piece;

the cylinder barrel is provided with a thrust part for abutting against a support end of the anti-falling support part at the end part close to the second part.

In some embodiments of the present invention, the cylinder and the support rod are installed in an inclined manner, and the support end of the falling prevention support member is located above the support rod.

In some embodiments of the present invention, the cylinder is a hydraulic cylinder, and the support rod is a piston rod.

In some embodiments of the present invention, the hydraulic cylinder and the piston rod are cylinder structures, and the hydraulic cylinder and the piston rod are coaxially disposed.

In some embodiments of the present invention, the cross section of the falling prevention support member is U-shaped, and one end of the falling prevention support member is connected to the support rod through a pin.

In some embodiments of the present invention, the other end of the falling prevention supporting member is a supporting end, and the supporting end has a fixing hole for connecting with the supporting rod.

In some embodiments of the present invention, at least one side of the drop-preventing support is provided with a wing portion.

In some embodiments of the present invention, the end surface of the cylinder barrel is the thrust portion.

In some embodiments of the present invention, the first component is an excavator frame and the second component is an excavator cab.

In some embodiments of the present invention, the excavator cab and the support rod are pivotally connected by a pin, and the mounting structure is a pin fixing hole.

By utilizing the anti-free fall supporting mechanism of the present disclosure, the beneficial effects that can be obtained are at least:

the support rod is connected with the anti-falling support piece in a pivoting mode, so that after the jacking mechanism jacks the second part in place, the support end of the anti-falling support piece is abutted against the first part, the phenomenon that the second part falls back due to self weight is prevented, and the safety is improved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. For convenience in illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:

fig. 1A is a schematic structural view of an anti-free-fall supporting mechanism according to an embodiment of the present invention;

FIG. 1B is a schematic structural view of a locked state of the support mechanism shown in FIG. 1A;

FIG. 1C is a schematic structural view of the support mechanism shown in FIG. 1A in a relaxed state;

fig. 2 is a schematic structural view of an anti-falling supporting member according to an embodiment of the present invention;

FIG. 3 is an elevation view of the drop prevention support of FIG. 2;

FIG. 4 is a side view of the drop guard support shown in FIG. 3;

fig. 5A is a schematic structural diagram of an excavator cab according to an embodiment of the present invention;

FIG. 5B is a schematic view of the cab shown in FIG. 5A in a raised position;

fig. 5C is a schematic structural view of the initial state of the cab shown in fig. 5A.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

It should be emphasized that the term "comprises/comprising/comprises/having" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

It should be noted that the terms of orientation and orientation used in the present specification are relative to the position and orientation shown in the drawings; the term "coupled" herein may mean not only directly coupled, but also indirectly coupled, in which case intermediates may be present, if not specifically stated. A direct connection is one in which two elements are connected without the aid of intermediate elements, and an indirect connection is one in which two elements are connected with the aid of other elements. Hereinafter, the terms "first end", "second end" and the like refer not only to an absolute end position but also to a portion near the end.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, like reference characters designate the same or similar parts throughout the several views.

Fig. 1A is a schematic structural diagram of a supporting mechanism according to an embodiment of the present invention, as shown in fig. 1A, the supporting mechanism includes a cylinder 210, a supporting rod 230, and a falling prevention supporting member 220. The support mechanism may be specifically a hydraulic support mechanism that converts the pressure energy of liquid into mechanical energy or a pneumatic support mechanism that converts the pressure energy of gas into mechanical energy; accordingly, the cylinder 210 may be a hydraulic or pneumatic cylinder, and the support rod 230 may be a piston rod.

The cylinder 210 is adapted to be mounted on a first component, such as a fixed base, a frame, etc.; the cylinder 210 is disposed outside the supporting rod 230, the supporting rod 230 is retractable within a predetermined length, and a first end of the supporting rod 230 away from the cylinder 210 is used for connecting with a second component, so that the second component is supported by the supporting mechanism under a predetermined action. In particular, the first end of the support bar 230 may be provided with a mounting formation for mounting to a second component. The first end of the support bar 230 is also pivotally mounted with a drop-preventing support 220, the drop-preventing support 220 is formed by extending a predetermined distance from the first end of the support bar 230 toward the cylinder 210, and a freely rotating end of the drop-preventing support 220 is provided with a support end for supporting the cylinder 210. Accordingly, the cylinder 210 is also provided with a thrust portion at an end portion near the second member against which the support end of the drop-preventing support 220 abuts. When the second member is in the jacking state, the falling prevention support 220 serves as a top bar between the second member and the cylinder 210. The anti-falling supporting member 220 is provided to prevent the second component from falling back, so the specific structure thereof should not be limited as long as the anti-falling supporting member 220 can ensure effective support of the second component when the second component is in the jacking state.

Illustratively, the anti-free-fall support mechanism may be tiltably mounted with the support end at the free-rotation end of the anti-fall support 220 above the support bar 230. Fig. 1B is a structural view showing a locked state of the supporting mechanism, and it can be seen from this figure that the falling preventive support 220 serves as a push rod between the second member and the cylinder 210 when the supporting mechanism is locked, to prevent the support rod 230 from moving in the axial direction, and thus to prevent the lifted second member from falling back by itself. Fig. 1C is a schematic view of the support mechanism in a relaxed state, in which the anti-falling support 220 is rotated counterclockwise around the pivot axis until the support end is away from the thrust portion of the cylinder 210, and in which the support rod 230 is movable in the axial direction, so that the lifted second member can fall back to the initial position. It will be appreciated that the locked state of the support mechanism corresponds to the holding process in which the second part is lifted to the extreme position, and the released state of the support mechanism corresponds to the process in which the second part is gradually lowered back and back to the initial state.

In addition to the above, the anti-free-fall support mechanism may also be installed vertically or horizontally. When the lifting mechanism is installed in the vertical direction, the lifting mechanism can be used as an anti-self-falling supporting mechanism of the lifting mechanism; when the device is installed in the horizontal direction, the device can be used as an anti-retraction supporting mechanism of horizontal linear motion equipment.

Preferably, the supporting rod 230 and the cylinder 210 are both cylindrical structures, and the supporting rod 230 and the cylinder 210 are coaxially disposed. The anti-falling supporting member 220 is connected to the supporting rod 230 by a pin 240, so as to realize the relative rotation between the anti-falling supporting member 220 and the supporting rod 230. The support rod 230 may be provided with a through hole for mounting the pin 240, and the axis of the through hole is perpendicular to the axis of the support rod 230. As shown in fig. 2, 3 and 4, one end of the drop prevention support 220 may be provided with a sleeve 223 for being sleeved outside the pin shaft 240. Preferably, the falling prevention support 220 may have a left-right symmetrical structure as a whole; and when connecting anti-falling supporting piece 220 and bracing piece 230, can align the through-hole of sleeve 223 shaft hole and bracing piece 230 of anti-falling supporting piece 220 earlier and place, and then pass each shaft hole with round pin axle 240 in proper order, and the other end of round pin axle 240 can further lock through the nut.

Preferably, the through hole for installing the pin 240 may be located at an end (first end) of the support rod 230, or may be located at a portion of the support rod 230 near the end. In order to prevent the second member from falling down due to its own weight or leakage of hydraulic oil or air pressure in a state where the second member is lifted up to the limit position, the distance between the axis of the through hole of the support rod 230 for mounting the pin 240 and the thrust portion of the cylinder 210 should be equal to the distance between the axis of the sleeve 223 of the falling preventive stay 220 and the support end of the falling preventive stay 220. It should be understood that the thrust portion on the cylinder 210 may be realized by an end face of the cylinder in particular, or by providing a thrust member at a predetermined position of the outer peripheral wall of the cylinder; but it should be ensured that the drop-proof support 220 achieves an effective support between the second part and the cylinder.

Further, the support mechanism may be tiltably mounted, and the support rod 230 and the second member are also connected by the pin 240. Specifically, a shaft hole for installing the pin shaft 240 may be similarly disposed on the second component, and the pin shaft 240 further sequentially passes through the shaft holes on the second component, the anti-falling supporting member 220 and the supporting rod 230 to connect the supporting mechanism and the second component.

Preferably, the anti-fall support 220 is specifically mounted above the support bar 230, i.e. the anti-fall support 220 is rotatable in a vertical plane about the axis of the pin 240 above the support bar 230. Because the supporting mechanism is arranged obliquely, and the pin shaft 240 is further connected with the second component, along with the increase of the jacking amplitude of the second component, the anti-falling supporting member 220 can automatically rotate to a locking state due to the self-weight action, and when the second component is jacked to the limit position, the anti-falling supporting member 220 rotates to be parallel to the supporting rod 230 and serves as a mandril between the second component and the cylinder 210.

Further, at least one side of the falling prevention supporting member 220 is further provided with a wing portion 222, and the whole wing portion 222 may be an elongated structure; preferably, both sides of the falling prevention supporter 220 may be provided with wing portions 222, and the wing portions at both sides of the falling prevention supporter 220 are in a symmetrical state. Specifically, the drop prevention support 220 may have a U-shaped cross-section; illustratively, the falling prevention support 220 may include a U-shaped plate body 221, as shown in fig. 3, one end of the U-shaped plate body 221 is used for being connected with the support rod 230 through a pin 240, and the other end has a fixing hole for further fixing with the support rod 230, and the fixing hole may be a U-shaped hole. Wing portions 222 are symmetrically disposed at left and right sides of the U-shaped plate body 221, and the wing portions 222 facilitate manual operation of the falling preventive support 220. For example, when the support mechanism is switched from the locked state to the released state, the wing 222 can be directly held by hand to rotate the falling prevention support 220 upward, so that the second member falls back to the initial position.

The wing portion 222 and the U-shaped plate 221 may be integrally formed; in addition, the wing portion 222 and the U-shaped plate 221 may be separate bodies, and the wing portion 222 and the U-shaped plate 221 may be welded to each other. It should be understood that the cross-section of the drop prevention support 220 may be other shapes than U-shaped, such as semi-circular, rectangular, etc.

In one embodiment of the present invention, the first component is the excavator frame 100 and the second component is the excavator cab 300. As shown in fig. 5A, the cylinder 210 of the support mechanism is fixed to the excavator frame 100, and the excavator cab 300 is connected to the end of the support rod 230 by a pin. Fig. 5C is a schematic structural view of the excavator cab 300 in an initial state (the cab is not lifted), as shown in fig. 5C, the falling prevention supporting member 220 is located above the supporting mechanism cylinder 210 and the supporting rod 230, and the supporting rod 230 retracts into the hollow cavity of the cylinder 210. Fig. 5B is a schematic structural view of the cab 300 being lifted, as shown in fig. 5B, when the anti-falling supporting member 220 is rotated to be parallel to the supporting rod 230, and when the anti-falling supporting member 220 is used as a push rod between the excavator cab 300 and the cylinder 210, i.e. the supporting end of the anti-falling supporting member abuts against the thrust portion of the cylinder and is pushed tightly; to prevent the excavator cab 300 from falling back due to its own weight and the leakage of liquid or gas in the supporting mechanism; it can be seen that when jacking is required to lift and dig excavator driver's cabin 300 in order to maintain the excavator, adopt the utility model discloses a supporting mechanism has further guaranteed maintenance personal's personal safety.

It should be understood that the anti-free-fall support mechanism may also be applied to other types of vehicles other than excavators, such as transportation automobiles. Similar to an excavator, the cylinder 210 of the support mechanism may be fixed to a frame located below the cab, and the end of the support rod 230 of the support mechanism is connected to the cab of the automobile. Besides, the self-locking supporting mechanism can also be applied to other types of equipment needing to be lifted.

Specifically, when the cab 300 is connected to the supporting rod 230, a pin shaft mounting hole may be formed in the fixing bottom plate of the cab 300, so that the pin shaft 240 of the anti-free-fall supporting mechanism may be fixed in the pin shaft mounting hole, thereby achieving effective connection between the fixing bottom plate of the cab 300 and the supporting rod 230 and the anti-fall supporting member 220. At this time, when mounting, the pin shaft mounting hole on the fixed base of the cab 300, the sleeve shaft hole of the anti-falling supporting member 220 and the through hole on the supporting rod 230 can be aligned in advance; the pin shaft 240 sequentially passes through the respective parts from left to right, and the end of the pin shaft 240 is finally locked by a locking nut.

As shown in fig. 5A, the support mechanism is obliquely installed between the excavator frame 100 and the excavator seat, and the front end of the seat fixing base plate is pivotally connected to the excavator frame 100; when the support rod 230 of the support mechanism is extended in the axial direction, it lifts the excavator cab 300 counterclockwise about the pivot axis between it and the excavator frame 100, and at the same time, the falling prevention support 220 is rotated clockwise due to its own weight; until both the excavator cab 300 and the drop guard support 220 move to the extreme positions shown in fig. 5B. As can be seen in fig. 5B, when the excavator cab 300 moves to the extreme position, the fixed floor of the excavator cab 300 is substantially vertical to the support mechanism. In addition, in order to further prevent the falling prevention supporter 220 from rotating by itself to cause a safety accident, the end of the falling prevention supporter 220 may be fixedly connected to the support bar 230 by a screw or a bolt.

Accordingly, when the cab 300 of fig. 5B needs to be dropped back to the initial position, the falling prevention support 220 may be manually pulled first, i.e., the rotating member is rotated counterclockwise away from the supporting rod 230. Further, as the support rod 230 moves in the axial direction, the cab 300 is gradually dropped back to the initial state shown in fig. 5C. When the anti-drop support 220 is fixedly connected to the support rod 230 by a screw or a bolt, the screw or the bolt needs to be removed before the anti-drop support 220 is pulled. As can be seen from the above, the falling prevention support 220 can automatically rotate to be parallel to the support rod 230 with the counterclockwise rotation of the cab 300, so as to lock the support mechanism.

According to the embodiment, the anti-falling supporting piece is pivotally connected to the supporting rod, so that after the supporting mechanism jacks the second component in place, the rotating component automatically rotates to be tightly jacked with the cylinder barrel to achieve self-locking of the supporting mechanism, the second component is prevented from falling, and safety is improved.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

The above listed embodiments show and describe the basic principles and main features of the present invention, but the present invention is not limited by the above embodiments, and the modifications, equivalent changes and modifications made by those skilled in the art without creative work should fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A fall-back prevention support mechanism comprising a cylinder for mounting on a first component and a support bar mounted within the cylinder and being telescopic within a predetermined length range, a first end of the support bar remote from the cylinder having a mounting formation for mounting to a second component,

an anti-falling support piece extending towards the cylinder barrel for a preset distance is mounted at the first end of the support rod through a pivot, and a support end used for being supported on the cylinder barrel is arranged at the free rotation tail end of the anti-falling support piece;

the cylinder barrel is provided with a thrust part for abutting against a support end of the anti-falling support part at the end part close to the second part.

2. The anti-run-off support mechanism of claim 1, wherein the cylinder and the support bar are mounted at an angle, and the support end of the anti-run-off support is located above the support bar.

3. The anti-free fall support mechanism according to claim 2, wherein the cylinder is a hydraulic cylinder and the support rod is a piston rod.

4. The anti-free fall support mechanism according to claim 3, wherein the hydraulic cylinder and the piston rod are both of a cylindrical structure, and the hydraulic cylinder and the piston rod are coaxially arranged.

5. The anti-free fall support mechanism according to claim 4, wherein the anti-fall support member is U-shaped in cross section, and one end of the anti-fall support member is connected to the support rod by a pin.

6. The anti-free fall support mechanism according to claim 5, wherein the other end of the anti-fall support is a support end, and the support end has a fixing hole for connecting with a support rod.

7. The anti-free fall support mechanism according to claim 5, wherein at least one side of the anti-fall support is provided with a wing.

8. The anti-free fall support mechanism according to claim 1, wherein an end surface of the cylinder tube is the thrust portion.

9. The anti-dropout support mechanism of any one of claims 1 to 8 wherein said first component is an excavator frame and said second component is an excavator cab.

10. The anti-free fall support mechanism of claim 9, wherein the excavator cab is pivotally connected to the support bar by a pin, and the mounting structure is a pin fixing hole.

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