CN215666783U - Limiting device for arm support, arm support mechanism and operation machine - Google Patents

Abstract

The utility model provides a limiting device for an arm support, an arm support mechanism and an operation machine, wherein the limiting device comprises a mounting seat, a driving assembly and a resetting assembly, and the mounting seat is used for connecting a main arm; the driving assembly is movably connected to the mounting seat, at least a connecting position and a separating position are arranged on a movable path of the driving assembly, the driving assembly is used for connecting the auxiliary arm and the main arm at the connecting position, and the driving assembly is separated from the auxiliary arm at the separating position, wherein the driving assembly is used for driving the auxiliary arm to move in a direction away from the main arm; the reset component is used for driving the driving component to move towards the connecting position. In the stop device of this embodiment, through setting up the subassembly that resets with drive assembly matched with, the subassembly that resets can order about drive assembly and reset, after cantilever crane and drive assembly separation, need not the manual work and reset the operation to drive assembly, improved the operation convenience, excellent in use effect.

Description

Limiting device for arm support, arm support mechanism and operation machine

Technical Field

The utility model relates to the technical field of operation machinery, in particular to a limiting device for an arm support, an arm support mechanism and operation machinery.

Background

In the existing arm support mechanism, the unfolding and the recovery actions of the auxiliary arm generally adopt two structures, namely, the unfolding and the folding operations are completed by manually pulling the auxiliary arm, and the unfolding and the folding actions of the auxiliary arm are realized by an oil cylinder driving mode; although the boom mechanism adopting the first mode has a simple structure, the auxiliary arm needs to be pulled manually to move, so that the operation is complicated and the efficiency is low; adopt hydro-cylinder drive auxiliary arm to remove can reach labour saving and time saving's effect to a certain extent, however, hydro-cylinder drive's device only can provide the effect of releasing to the auxiliary arm at present, and the hydro-cylinder still need realize the return through the manpower pulling after the drive auxiliary arm removes, has increased time and human cost, and the result of use is not good.

There is therefore a need for improvements to existing arm support mechanisms to change the current situation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a limiting device for an arm support, an arm support mechanism and an operation machine, which are used for solving the problem that the folding and unfolding effect of an auxiliary arm in the traditional arm support mechanism is poor.

The utility model provides a limiting device for an arm support, wherein the arm support comprises a main arm and an auxiliary arm which are movably connected, and the limiting device comprises:

the mounting seat is used for connecting the main arm;

a driving assembly movably connected to the mounting base and having at least a connection position for connecting the sub-arm and the main arm and a disconnection position for disconnecting the sub-arm from the main arm on a moving path of the driving assembly, wherein the driving assembly is configured to drive the sub-arm to move away from the main arm; and

and the resetting assembly is used for driving the driving assembly to move towards the connecting position.

According to one embodiment of the utility model, the driving assembly comprises a hook, a driving piece and a bearing piece, wherein the hook is arranged at one end of the driving piece and is used for connecting the arm support; the other end of the driving piece is rotatably connected to the bearing piece, the driving piece is used for driving the hook to move towards or away from the bearing piece, and the bearing piece is rotatably connected to the mounting seat; the reset component is used for driving the driving piece to move towards the connecting position.

According to an embodiment of the present invention, the limiting device further includes a first limiting member, the first limiting member is detachably connected to the bearing member, and the first limiting member is used for limiting the movement of the driving member.

According to an embodiment of the present invention, the first limiting member is disposed at a lower side of the driving member.

According to one embodiment of the utility model, the hook is provided with a clamping groove used for connecting the arm support, and the hook is also provided with a guide inclined plane connected to the inner wall of the clamping groove.

According to one embodiment of the utility model, the drive member rotates relative to the carrier about a first axis, and the carrier rotates relative to the mount about a second axis, the first axis being perpendicular to the second axis.

According to one embodiment of the present invention, the restoring assembly includes an elastic member and a connecting member, the connecting member is detachably connected to the mounting seat, and the elastic member is respectively connected to the carrier member and the connecting member.

According to an embodiment of the present invention, the limiting device further includes a second limiting member, the second limiting member is detachably connected to the mounting base, and the position of the second limiting member relative to the mounting base is adjustable, and the second limiting member is disposed on one side of the driving assembly and is used for limiting the movement of the driving assembly.

The utility model also provides an arm support mechanism which comprises a main arm, an auxiliary arm and any one of the limiting devices for the arm support; the auxiliary arm and the main arm are movably arranged relatively, the mounting base is detachably connected to the main arm, and the auxiliary arm is the arm support.

The utility model also provides an operation machine which comprises the limiting device for the arm support or the arm support mechanism.

When the limiting device is used, the mounting seat of the limiting device is connected with an external component, the driving assembly is connected with the arm support at the connecting position and can apply thrust to the arm support to enable the arm support to move towards the direction far away from the external component until the driving assembly moves to the separating position to be separated from the arm support, the arm support further moves to the appointed position to perform related operation, at the moment, the driving assembly can move reversely under the driving action of the reset assembly until the arm support moves to the connecting position, and when the arm support moves reversely to the initial position, the driving assembly can fix the arm support and the external component.

In the stop device of this embodiment, through setting up the subassembly that resets with drive assembly matched with, the subassembly that resets can order about drive assembly and reset, after cantilever crane and drive assembly separation, need not the manual work and reset the operation to drive assembly, improved the operation convenience, excellent in use effect.

According to the arm support mechanism of the embodiment, by means of the limiting device, after the auxiliary arm is separated from the main arm, the reset assembly can reset the driving assembly, manual related operations are not needed, the structure is simple, and the using effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an axial side view of a boom mechanism in an embodiment of the utility model;

FIG. 2 is an enlarged view of detail A of FIG. 1;

FIG. 3 is an enlarged view of detail B of FIG. 1;

FIG. 4 is a top view of a spacing device in an embodiment of the present invention;

FIG. 5 is a front view of a spacing device in an embodiment of the utility model;

FIG. 6 is a side view of a spacing device in an embodiment of the utility model;

reference numerals:

1. a boom mechanism; 10. A limiting device; 100. A mounting seat;

200. a drive assembly; 210. Hooking; 211. A guide slope;

212. a clamping groove; 220. A drive member; 230. A carrier;

300. a reset assembly; 310. An elastic member; 320. A connecting member;

400. a first limit piece; 500. A second limiting member; 20. An auxiliary arm;

21. a sub-arm body; 22. A pin shaft; 30. A main arm.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 4, an embodiment of the utility model provides a limiting device 10 for a boom, which includes a mounting base 100, a driving assembly 200, and a reset assembly 300, where the mounting base 100 is used to connect an external component; the driving assembly 200 is movably connected to the mounting base 100, and the driving assembly 200 is used for driving the arm support to move relative to the external member; the movable path of the driving assembly 200 at least has a connection position where the driving assembly 200 is used to fix the boom and the external member and a separation position where the driving assembly 200 is separated from the boom; the reset assembly 300 is coupled to the mounting base 100 and the driving assembly 200, respectively, and is used to drive the driving assembly 200 to move toward the coupled position.

When the limiting device 10 of the embodiment is used, the mounting seat 100 of the limiting device 10 is connected with an external component, when the limiting device is at a connection position, the driving assembly 200 is connected with the arm support and can apply a thrust to the arm support to enable the arm support to move in a direction away from the external component until the driving assembly 200 moves to a separation position and is separated from the arm support, the arm support further moves to a specified position to perform related operations, at this time, the driving assembly 200 can move reversely under the driving action of the reset assembly 300 until the driving assembly moves to the connection position, and when the arm support moves reversely to an initial position, the driving assembly 200 can fix the arm support and the external component.

In the limiting device 10 of the embodiment, the reset assembly 300 matched with the driving assembly 200 is arranged, the reset assembly 300 can drive the driving assembly 200 to reset, after the arm support is separated from the driving assembly 200, the manual reset operation on the driving assembly 200 is not needed, the operation convenience is improved, and the using effect is good.

Specifically, in the present embodiment, the driving assembly 200 includes a hook 210, a driving member 220 and a bearing member 230, wherein the hook 210 is disposed at one end of the driving member 220 and is used for connecting the arm support; the driving member 220 is rotatably connected to the bearing member 230, and the driving member 220 is used for driving the hook 210 to move towards or away from the bearing member 230, and the bearing member 230 is rotatably connected to the mounting base 100; the reset assembly 300 is used to actuate the driving member 220 toward the connection position.

Using the boom mechanism 1 of this embodiment, taking the connection position as an initial position, at this time, the hook 210 is connected with the boom and fixes the boom relative to the mount 100, the driving element 220 is started after being connected with an external power source or receiving an external control signal, and drives the hook 210 to move in a direction away from the mount 100 and push the boom to move, and in this process, the bearing element 230 rotates in a single direction relative to the mount 100 along with the movement of the driving element 220; when the driving assembly 200 moves to the separated position, the arm support is separated from the hook 210, and the reset assembly 300 can drive the bearing piece 230 to rotate in the reverse direction until the driving assembly 200 resets; after the driving assembly 200 is reset, when the arm support moves to the initial position in the reverse direction, the hook 210 can be connected with the arm support to fix the arm support, and the use is convenient.

In this embodiment, an end of the driving member 220 away from the hook 210 is rotatably connected to the supporting member 230, and in other embodiments, the supporting member 230 may also be connected to a position between two ends of the driving member 220, which is not limited herein.

In the present embodiment, the driving member 220 is a linear driving member.

Specifically, the driving member 220 may be a linear driving element such as a hydraulic rod, a pneumatic rod, an electric cylinder, etc., and is not limited thereto. In other embodiments, the driving element 220 may also be a rotary driving element such as a driving motor, a rotary cylinder, etc. and drives the hook 210 to move toward or away from the mounting base 100 by rotating, so as to implement the function of driving the arm support to move.

Further, referring to fig. 2, 5 and 6, the limiting device 10 further includes a first limiting member 400, the first limiting member 400 is detachably connected to the supporting member 230, and the position of the first limiting member 400 relative to the supporting member 230 is adjustable, and the first limiting member 400 is used for limiting the movement of the driving member 220.

With the limiting device 10 of the embodiment, after the hook 210 is separated from the arm support, the driving element 220 is in the active state, the movement of the driving element 220 can be limited by arranging the first limiting element 400, and after the resetting component 300 drives the driving element 220 to move to the initial position, the driving element 220 and the bearing element 230 can be in the preset position, so that the hook 210 can be accurately connected with the arm support.

Specifically, the first limiting member 400 is disposed at the lower side of the driving member 220.

As shown in fig. 2, after the hook 210 is separated from the arm support, the movable end of the driving element 220 is turned downward from the bearing element 230 under the action of gravity, and the first limiting element 400 arranged at the bottom of the driving element 220 is matched with the driving element 220, so that the movement of the driving element 220 can be limited; in the process of using the limiting device 10 of this embodiment, the relative position of the first limiting member 400 on the bearing member 230 can be adjusted according to the actual structure of the arm support and the external member, so that the hook 210 can be accurately connected with the arm support when the arm support is reset, and the limiting effect of the limiting device 10 is further ensured.

In an embodiment, a buffer pad may be further disposed on a side of the first limiting member 400 facing the driving member 220 to reduce an impact force between the driving member 220 and the first limiting member 400, so as to avoid damaging the outer wall of the first limiting member 400 and/or the driving member 220, and the usage effect is good.

Further, referring to fig. 3 and 6, the hook 210 is provided with a catching groove 212 for connecting the arm support, and the hook 210 is further provided with a guide slope 211 connected to an inner wall of the catching groove 212.

In this embodiment, the guiding inclined plane 211 may be disposed on a side of the hook 210 away from the driving element 220, that is, a side facing the arm support, and an edge of the guiding inclined plane 211 is connected to an inner wall of the engaging groove 212, when the arm support is connected to the hook 210, the arm support and the guiding inclined plane 211 may slide relatively to each other and guide movement of the arm support, and at this time, the arm support may drive the driving element 220 to turn over relative to the bearing element 230 until the arm support is engaged into the engaging groove 212, so that the coupling efficiency of the hook 210 may be improved.

Referring to fig. 2, in the present embodiment, the driving member (220) rotates relative to the supporting member (230) around a first axis, and the supporting member (230) rotates relative to the mounting base (100) around a second axis, wherein the first axis is perpendicular to the second axis.

In this embodiment, the first axis extends along a horizontal direction, and the second axis extends along a vertical direction, in other embodiments, an included angle may be formed between the first axis and the second axis, so that the driving member 220 and the bearing member 230 may also rotate relatively.

Specifically, referring to fig. 1 and 3, in an embodiment, the arm support may be an auxiliary arm 20, the auxiliary arm 20 includes an auxiliary arm body 21 and a pin 22, and the pin 22 is used for being engaged with the engaging groove 212 of the hook 210; with the limiting device 10 of the present embodiment, when the auxiliary arm 20 moves toward the direction close to the mounting seat 100, the pin 22 can first contact with the guiding inclined surface 211, and the two can slide until the pin 22 is snapped into the snapping groove 212, so as to complete the positioning of the auxiliary arm 20.

Further, referring to fig. 2 and 4, the reduction assembly 300 includes an elastic member 310 and a connection member 320, the connection member 320 is detachably connected to the mounting base 100, and the elastic member 310 is respectively connected to the driving assembly 200 and the connection member 320.

When the limiting device 10 of the embodiment is assembled, the mounting position between the connecting piece 320 and the mounting seat 100 is adjusted according to the actual mounting position of the arm support and the external component, then the elastic piece 310 is respectively connected with the connecting piece 320 and the driving assembly 200, and the adjustable connecting piece 320 is arranged to be connected with the mounting seat 100, so that the limiting device 10 can be suitable for arm supports and external components with different sizes, and has a good use effect; in the process that the bearing member 230 moves from the connection position to the separation position, the elastic member 310 stretches and stores elastic potential energy, and after the hook 210 is separated from the arm support, the elastic member 310 releases the elastic potential energy and drives the bearing member 230 to reset under the action of the elastic force.

Specifically, the elastic member 310 may be an elastic element such as a coil spring, a plate spring, etc., and the reset assembly 300 may also be a driving element such as a hydraulic rod, an air cylinder, or an electric cylinder, etc., and after the hook 210 is separated from the arm support, the driving element may drive the carrier 230 to reset. It should be noted that, in the present embodiment, the elastic member 310 may be connected to the supporting member 230, and in other embodiments, the elastic member 310 may also be connected to the driving member 220, which is not limited herein.

Further, the limiting device 10 further includes a second limiting member 500, the second limiting member 500 is detachably connected to the mounting base 100, and the position of the second limiting member 500 relative to the mounting base 100 is adjustable, and the second limiting member 500 is disposed on one side of the driving assembly 200 and is used for limiting the movement of the driving assembly 200.

Therefore, in the process that the bearing member 230 moves toward the connection position, the second limiting member 500 may abut against and limit the bearing member 230, and by adjusting the relative position of the second limiting member 500 on the mounting base 100, the limiting device 10 may be applied to different arm rests and external members.

Referring to the placing state shown in fig. 2, in the embodiment, the first limiting member 400 may be disposed at the bottom of the driving member 220, and in the moving process of the driving member 220, the first limiting member 400 may abut against the bottom of the driving member 220 to limit the movement of the driving member 220; the second limiting member 500 is disposed on one side of the carrier 230, and during the movement of the carrier 230, the second limiting member 500 may abut on one side of the carrier 230 to limit the movement of the carrier 230, specifically in this embodiment, the first limiting member 400 may be disposed on the lower side of the driving member 220, and the second limiting member 500 may be disposed on one side of the moving path of the carrier 230 toward the mounting base 100.

In other embodiments, the second limiting member 500 may also be disposed on the moving path of the driving member 220, and may abut against an outer wall of the driving member 220 to limit the movement of the driving member, which is not limited herein.

In an embodiment, a buffer pad may be further disposed on a side of the second limiting member 500 facing the bearing member 230, so that when the elastic member 310 drives the bearing member 230 to move toward the connection position, an impact force between the bearing member 230 and the second limiting member 500 may be reduced, and the structure is simple and the using effect is good.

The utility model also provides an arm support mechanism 1 which comprises a main arm 30, an auxiliary arm 20 and the limiting device 10 in any one of the embodiments; the sub-arm 20 is provided to be movable relative to the main arm 30, and the mount 100 is detachably connected to the main arm 30. In this embodiment, the external member may be the main arm 30, and the arm support may be the sub-arm 20.

According to the arm support mechanism 1 of the embodiment, by arranging the limiting device 10, after the auxiliary arm 20 is separated from the main arm 30, the reset component 300 can reset the driving component 200, manual related operations are not needed, the structure is simple, and the using effect is good.

Further, the utility model also provides a working machine, which comprises the limiting device 10 or the arm support mechanism 1 in any one of the embodiments.

In this embodiment, the working machine includes, but is not limited to, a crane, a lift truck, a crane, and other working machines having a combined boom structure, and by providing the limiting device 10, after the limiting device 10 performs the unfolding action on the auxiliary boom 20, the automatic reset function of the limiting device 10 can be realized, and the device has high reset efficiency and accuracy, does not need manual operation, and has a simple structure and a good use effect.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A stop device for cantilever crane, cantilever crane includes swing joint's main arm and auxiliary, its characterized in that, stop device includes:

the mounting seat is used for connecting the main arm;

a driving assembly movably connected to the mounting base and having at least a connection position for connecting the sub-arm and the main arm and a disconnection position for disconnecting the sub-arm from the main arm on a moving path of the driving assembly, wherein the driving assembly is configured to drive the sub-arm to move away from the main arm; and

and the resetting assembly is used for driving the driving assembly to move towards the connecting position.

2. The limiting device for the arm support according to claim 1, wherein the driving assembly comprises a hook, a driving part and a bearing part, the hook is arranged at one end of the driving part and is used for being connected with the arm support; the other end of the driving piece is rotatably connected to the bearing piece, the driving piece is used for driving the hook to move towards or away from the bearing piece, and the bearing piece is rotatably connected to the mounting seat; the reset component is used for driving the driving piece to move towards the connecting position.

3. The limiting device for the arm support of claim 2, further comprising a first limiting member detachably connected to the bearing member, wherein the first limiting member is used for limiting the movement of the driving member.

4. The limiting device of claim 3, wherein the first limiting member is disposed at a lower side of the driving member.

5. The limiting device for the arm support according to claim 2, wherein the hook is provided with a clamping groove for connecting the arm support, and the hook is further provided with a guide inclined surface connected to the inner wall of the clamping groove.

6. The limit stop device of claim 2, wherein the drive member rotates relative to the bearing about a first axis and the bearing rotates relative to the mount about a second axis, the first axis being perpendicular to the second axis.

7. The limiting device for the arm support according to claim 2 or 6, wherein the reset assembly comprises an elastic member and a connecting member, the connecting member is detachably connected to the mounting seat, and the elastic member is respectively connected to the bearing member and the connecting member.

8. The limiting device for the arm support according to claim 1 or 2, further comprising a second limiting member, wherein the second limiting member is detachably connected to the mounting base and is adjustable with respect to the mounting base, and the second limiting member is disposed at one side of the driving assembly and is used for limiting the movement of the driving assembly.

9. A boom mechanism, characterized in that the boom mechanism comprises a main arm, an auxiliary arm and a limiting device for the boom as claimed in any one of claims 1-8; the auxiliary arm and the main arm are movably arranged relatively, the mounting base is detachably connected to the main arm, and the auxiliary arm is the arm support.

10. A working machine, characterised by comprising a limiting device for a boom according to any of claims 1-8 or a boom mechanism according to claim 9.

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