阅读说明：本技术 支腿操纵装置及起重机 (Landing leg operating device and crane ) 是由 刘志平 张志敏 刘建培 于 2020-07-30 设计创作，主要内容包括：本发明的实施例提供了一种支腿操纵装置及起重机,涉及起重机技术领域。该支腿操纵装置包括调节组件、机架和分设于机架两侧的第一操作组件和第二操作组件,第一操作组件和第二操作组件分别用于控制多路阀,以驱动支腿移动。调节组件分别与第一操作组件和第二操作组件连接,以使第一操作组件用于操控位于第一操作组件同一侧的支腿,以使第二操作组件用于操控位于第二操作组件同一侧的支腿,提高了起重机作业中的安全性。(The embodiment of the invention provides a supporting leg operating device and a crane, and relates to the technical field of cranes. The supporting leg operating device comprises an adjusting assembly, a rack, a first operating assembly and a second operating assembly, wherein the first operating assembly and the second operating assembly are respectively arranged on two sides of the rack and are respectively used for controlling the multi-way valve so as to drive the supporting leg to move. The adjusting assembly is respectively connected with the first operating assembly and the second operating assembly, so that the first operating assembly is used for controlling the supporting legs positioned on the same side of the first operating assembly, the second operating assembly is used for controlling the supporting legs positioned on the same side of the second operating assembly, and the safety in crane operation is improved.)

1. The supporting leg operating device is characterized by comprising an adjusting assembly, a frame (10), and a first operating assembly (30) and a second operating assembly (40) which are respectively arranged on two sides of the frame (10), wherein the first operating assembly (30) and the second operating assembly (40) are respectively used for being connected with a multi-way valve (20) to drive a supporting leg to move;

the adjusting assembly is respectively connected with the first operating assembly (30) and the second operating assembly (40), so that the first operating assembly (30) is used for operating the support leg positioned on the same side of the first operating assembly (30), and the second operating assembly (40) is used for operating the support leg positioned on the same side of the second operating assembly (40).

2. The leg operating device according to claim 1, wherein the first operating assembly (30) comprises a first left operating member (310) and a first right operating member (320) provided on a first side of the frame (10), and the second operating assembly (40) comprises a second left operating member (410) and a second right operating member (420) provided on a second side of the frame (10);

the adjusting assembly comprises a first adjusting assembly (50) and a second adjusting assembly (60), the first adjusting assembly (50) is arranged on a first side of the frame (10) and is connected with the first right operating piece (320) to limit the operation of the first right operating piece (320) on the multi-way valve (20), so that the first left operating piece (310) is used for driving a support leg on the first side of the frame (10);

the second adjusting assembly (60) is arranged on the second side of the rack (10) and connected with the second left operating piece (410) to limit the operation of the second left operating piece (410) on the multi-way valve (20), so that the second right operating piece (420) is used for driving a support leg on the second side of the rack (10).

3. The leg manipulating device according to claim 2, wherein the first adjusting assembly (50) comprises a first adjusting plate (510), one end of the first adjusting plate (510) is connected with the frame (10), and the other end is connected with the first right operating member (320); the first adjusting plate (510) is used for fixing the first right operating member (320) so as to limit the first right operating member (320) from driving the support leg of the second side.

4. The leg manipulating device according to claim 2, wherein the second adjusting assembly (60) comprises a second adjusting plate (610), one end of the second adjusting plate (610) is connected to the frame (10), and the other end is connected to the second left operating member (410); the second adjusting plate (610) is used for fixing the second left operating element (410) to limit the second left operating element (410) from driving the leg of the first side.

5. The leg manipulating device according to claim 2, wherein the first adjusting assembly (50) comprises a first adjusting plate (510) and a first adjusting member (540), one end of the first adjusting member (540) is connected with the first adjusting plate (510), and the other end is connected with the first right operating member (320); the first adjusting piece (540) is used for adjusting the distance between the first right operating piece (320) and the first adjusting plate (510);

the second adjusting assembly (60) comprises a second adjusting plate (610) and a second adjusting piece (640), one end of the second adjusting piece (640) is connected with the second adjusting plate (610), the other end of the second adjusting piece is connected with the second left operating piece (410), and the second adjusting piece (640) is used for adjusting the distance between the second left operating piece (410) and the second adjusting plate (610).

6. The leg manipulation apparatus of claim 5, wherein the first adjustment member (540) and the second adjustment member (640) each employ an adjustment screw.

7. The leg operating device according to claim 2, wherein the first left operating member (310) includes a first handle (311) and a second handle (312), and the first right operating member (320) includes a third handle (321) and a fourth handle (322); the second left operating member (410) includes a fifth grip (411) and a sixth grip (412), and the second right operating member (420) includes a seventh grip (421) and an eighth grip (422);

the first adjusting component (50) is connected with the third handle (321) and the fourth handle (322) respectively, and the second adjusting component (60) is connected with the fifth handle (411) and the sixth handle (412) respectively.

8. The leg manipulating device according to claim 7, wherein a first mounting portion (520) and a second mounting portion (530) are provided on the first adjusting assembly (50), the first mounting portion (520) is connected with the third handle (321), and the second mounting portion (530) is connected with the fourth handle (322).

9. The leg manipulating device according to claim 7, wherein a third mounting portion (620) and a fourth mounting portion (630) are provided on the second adjusting assembly (60), the third mounting portion (620) is connected with the fifth handle (411), and the fourth mounting portion (630) is connected with the sixth handle (412).

10. A crane, characterized by comprising a support leg, a multi-way valve (20) and a support leg operating device according to any one of claims 1 to 9, the support leg operating device being connected with the multi-way valve (20), the multi-way valve (20) being connected with the support leg.

Technical Field

The invention relates to the technical field of cranes, in particular to a supporting leg operating device and a crane.

Background

According to the existing crane, the left side supporting leg and the right side supporting leg can be controlled on two sides of the crane. The operator can enough operate the flexible of left side landing leg promptly on the left side of hoist, also can operate the flexible of right side landing leg, and in the same way, can enough operate the flexible of left side landing leg on the right side of hoist, also can operate the flexible of right side landing leg. Therefore, the operator is on the left side of the crane, and cannot observe the actual position of the right supporting leg, so that great potential safety hazard exists in the operation control of the operator on the right supporting leg on the left side. Similarly, the operator is located on the right side of the crane, and cannot observe the actual position of the left-side supporting leg, so that the operator also has great potential safety hazard on the operation control of the left-side supporting leg on the right side, and safety accidents are easily caused.

Disclosure of Invention

The invention aims to provide a supporting leg operating device and a crane, which can realize the operation interlocking of two-side supporting legs of the crane, namely, an operator can only operate the left supporting leg on the left side and can only operate the right supporting leg on the right side, so that the occurrence of safety accidents is reduced, and the operation safety is improved.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment of the present invention provides a support leg operating device, including an adjusting assembly, a frame, and a first operating assembly and a second operating assembly respectively disposed on two sides of the frame, where the first operating assembly and the second operating assembly are respectively used for being connected to a multi-way valve to control the on/off of the multi-way valve, so as to control a drive support leg to move;

the adjusting assembly is respectively connected with the first operating assembly and the second operating assembly, so that the first operating assembly is used for operating the supporting leg on the same side of the first operating assembly, and the second operating assembly is used for operating the supporting leg on the same side of the second operating assembly.

In an alternative embodiment, the first operating assembly includes a first left operating member and a first right operating member provided on a first side of the housing, and the second operating assembly includes a second left operating member and a second right operating member provided on a second side of the housing;

the adjusting assembly comprises a first adjusting assembly and a second adjusting assembly, the first adjusting assembly is arranged on the first side of the rack and is connected with the first right operating piece so as to limit the operation of the first right operating piece on the multi-way valve, and the first side of the rack can operate the multi-way valve through the first left operating piece; the first left operating piece is used for driving a support leg on the first side of the rack;

the second adjusting assembly is arranged on the second side of the rack and connected with the second left operating piece to limit the operation of the second left operating piece on the multi-way valve, so that the second side of the rack is operated on the multi-way valve through the second right operating piece, and the second right operating piece is used for driving a support leg of the second side of the rack.

In an alternative embodiment, the first adjusting assembly includes a first adjusting plate, one end of which is connected to the frame and the other end of which is connected to the first right operating member. The first adjusting plate is used for fixing the first right operation piece so as to limit the first right operation piece to drive the support leg of the second side.

In an alternative embodiment, the second adjusting assembly includes a second adjusting plate, one end of which is connected to the frame and the other end of which is connected to the second left operating member. The second adjusting plate is used for fixing the second left operating piece so as to limit the second left operating piece to drive the support leg on the first side.

In an alternative embodiment, the first adjusting assembly comprises a first adjusting plate and a first adjusting piece, one end of the first adjusting piece is connected with the first adjusting plate, and the other end of the first adjusting piece is connected with the first right operating piece; the first adjusting piece is used for adjusting the distance between the first right operating piece and the first adjusting plate;

the second adjusting part comprises a second adjusting plate and a second adjusting piece, one end of the second adjusting piece is connected with the second adjusting plate, the other end of the second adjusting piece is connected with the second left side operating piece, and the second adjusting piece is used for adjusting the distance between the second left side operating piece and the second adjusting plate.

In an alternative embodiment, the first adjusting member and the second adjusting member are respectively an adjusting screw or an adjusting screw.

In an alternative embodiment, the first left operating member comprises a first handle and a second handle, and the first right operating member comprises a third handle and a fourth handle; the second left operating member comprises a fifth handle and a sixth handle, and the second right operating member comprises a seventh handle and an eighth handle;

the first adjusting assembly is connected with the third handle and the fourth handle respectively, and the second adjusting assembly is connected with the fifth handle and the sixth handle respectively.

In an optional implementation manner, a first installation part and a second installation part are arranged on the first adjusting assembly, the first installation part is connected with the third handle, and the second installation part is connected with the fourth handle.

In an optional implementation manner, a third installation part and a fourth installation part are arranged on the second adjusting assembly, the third installation part is connected with the fifth handle, and the fourth installation part is connected with the sixth handle.

In an alternative embodiment, the first left operating member and the second left operating member are connected by a link, and the first right operating member and the second right operating member are connected by a link, the link being configured to connect to the multiplex valve.

In a second aspect, an embodiment of the invention provides a crane, comprising a support leg, a multi-way valve and a support leg operating device as described in any one of the previous embodiments, the support leg operating device being connected to the multi-way valve, and the multi-way valve being connected to the support leg.

The supporting leg operating device comprises an adjusting assembly, a rack, and a first operating assembly and a second operating assembly which are respectively arranged on two sides of the rack, wherein the first operating assembly and the second operating assembly are respectively used for being connected with a multi-way valve so as to control the on or off of the multi-way valve and drive the supporting leg to move; the adjusting assembly is respectively connected with the first operating assembly and the second operating assembly, so that the first operating assembly is used for operating the supporting leg on the same side of the first operating assembly, and the second operating assembly is used for operating the supporting leg on the same side of the second operating assembly.

The beneficial effects of the embodiment of the invention include, for example:

according to the supporting leg operating device provided by the embodiment of the invention, the adjusting assembly is respectively connected with the first operating assembly and the second operating assembly, so that the first operating assembly can only be used for operating the supporting leg positioned on the same side as the first operating assembly, and the second operating assembly can only be used for operating the supporting leg positioned on the same side as the second operating assembly, therefore, an operator can be prevented from operating the supporting leg on the right side when the operator is on the left side or the supporting leg on the left side when the operator is on the right side, and safety accidents caused by blind areas of vision or misjudgment are avoided. The supporting leg operating device greatly improves the safety of crane operation, reduces accidents, and greatly eliminates potential safety hazards.

The crane provided by the embodiment of the invention comprises the supporting leg operating device, so that an operator can only realize the adjustment control on the left supporting leg on the left side and only realize the adjustment control on the right supporting leg on the right side, the operation safety of the crane is greatly improved, the occurrence of accidents is reduced, and the potential safety hazard is greatly eliminated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an application scenario of a leg operating device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an application scenario of a viewing angle of a first operating assembly of a leg manipulating device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an application scenario of another view angle of the first operating assembly of the leg manipulating device according to the embodiment of the present invention;

fig. 4 is a schematic view of an application scenario of a viewing angle of a second operating assembly of the leg manipulating device according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of an application scenario of another view angle of the second operating assembly of the leg manipulating device according to the embodiment of the present invention.

Icon: 10-a frame; 20-a multi-way valve; 30-a first operating assembly; 40-a second operational component; 50-a first adjustment assembly; 60-a second adjustment assembly; 210-a first mounting bracket; 310-a first left-hand operating member; 311-a first handle; 312-a second handle; 320-a first right-side operating member; 321-a third handle; 322-a fourth handle; 410-a second left operating member; 411-fifth handle; 412-sixth handle; 420-a second right-hand operating member; 421-a seventh handle; 422-eighth handle; 510-a first regulation plate; 520-a first mounting portion; 530-a second mounting portion; 540-a first adjustment member; 220-a second mounting bracket; 610-a second adjustment plate; 620-third mount; 630-a fourth mount; 640-a second adjustment member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

At present, the bilateral interlocking of the left and right control of landing leg can not be realized to most cranes, and the operator can enough operate the flexible of left side landing leg promptly in the left side of crane, also can operate the flexible of right side landing leg, and on the same reason, the operator can enough operate the flexible of left side landing leg on the right side of crane, also can operate the flexible of right side landing leg. Therefore, the operator cannot observe the actual position of the right supporting leg on the left side of the crane, and great potential safety hazard exists in the operation control of the operator on the right supporting leg on the left side of the crane. Similarly, the operator is positioned at the right side of the crane, and cannot observe the actual position of the left supporting leg, so that great potential safety hazards exist in the operation control of the left supporting leg, and safety accidents are easily caused.

In order to overcome the defects of the prior art, the embodiment of the invention provides the supporting leg operating device, which can realize bilateral interlocking of left and right operation of the supporting leg, avoid safety accidents caused by sight blind areas during operation, improve the operation safety and reduce unnecessary economic loss.

Referring to fig. 1, the present embodiment provides a leg manipulating apparatus, which includes an adjusting assembly, a frame 10, and a first operating assembly 30 and a second operating assembly 40 respectively disposed on two sides of the frame 10, wherein the first operating assembly 30 and the second operating assembly 40 are respectively used for connecting with a multi-way valve 20 to control the on/off of the multi-way valve 20, so as to drive a leg to move. The first operating assembly 30 includes a first left operating member 310 (see fig. 3) and a first right operating member 320 (see fig. 3) provided at a first side of the housing 10, and the second operating assembly 40 includes a second left operating member 410 (see fig. 5) and a second right operating member 420 (see fig. 5) provided at a second side of the housing 10. The adjustment assembly includes a first adjustment assembly 50 and a second adjustment assembly 60, the first adjustment assembly 50 is disposed on a first side of the frame 10 and is coupled to the first right operating member 320 to limit operation of the multiplex valve 20 by the first right operating member 320, such that the first side of the frame 10 drives movement of the first side leg by operation of the multiplex valve 20 by the first left operating member 310. The second adjustment assembly 60 is disposed on a second side of the frame 10 and is coupled to the second left operating member 410 to limit operation of the multiplex valve 20 by the second left operating member 410 such that operation of the multiplex valve 20 by the second right operating member 420 actuates movement of the second side leg by the second side of the frame 10. By providing the first adjusting assembly 50 and the second adjusting assembly 60, the leg manipulating device in this embodiment can realize that an operator can only adjust the left leg by the first left operating element 310 on the left side of the crane, and cannot control the stretching and retracting actions of the right leg. And the operator can only adjust the right leg through the second right operation element 420 on the right side of the crane, and cannot control the actions of the left leg such as stretching and retracting, so that the operation safety is improved.

It should be noted that the multi-way valve 20 at least includes a first valve rod, a second valve rod, a third valve rod and a fourth valve rod, and the support legs of the crane at least include a left front support leg, a left rear support leg, a right front support leg and a right rear support leg. The first valve rod acts to control the extension and contraction of the left front supporting leg, the second valve rod acts to control the extension and contraction of the right front supporting leg, the third valve rod acts to control the extension and contraction of the left rear supporting leg, and the fourth valve rod acts to control the extension and contraction of the right rear supporting leg.

Alternatively, referring to fig. 2 and 3, the first left operating member 310 includes a first handle 311 and a second handle 312 provided at the first side of the frame 10, and the first right operating member 320 includes a third handle 321 and a fourth handle 322 provided at the first side of the frame 10. Referring to fig. 4 and 5, the second left operating member 410 includes a fifth handle 411 and a sixth handle 412 provided at the second side of the frame 10, and the second right operating member 420 includes a seventh handle 421 and an eighth handle 422 provided at the second side of the frame 10. Wherein, first handle 311 and fifth handle 411 set up relatively, locate the both sides of frame 10 respectively, and first handle 311 is located first side (left side), and fifth handle 411 is located second side (right side), and first handle 311 and fifth handle 411 are connected with first valve rod respectively for the flexible of leg before controlling a left side. Accordingly, the second handle 312 and the sixth handle 412 are oppositely disposed and connected to the third lever, respectively, for controlling the extension and contraction of the left and rear legs. The third handle 321 and the seventh handle 421 are oppositely arranged and respectively connected with the second valve rod, and are used for controlling the extension and contraction of the right front supporting leg. The fourth handle 322 and the eighth handle 422 are oppositely arranged and are respectively connected with the fourth valve rod for controlling the extension and contraction of the right rear supporting leg.

Further, taking the left side of the frame 10 as an example, the first adjusting assembly 50 includes a first adjusting plate 510, one end of the first adjusting plate 510 is connected to the frame 10, and the other end is connected to the first right operating member 320. Optionally, the multiplex valve 20 is disposed on the frame 10 by a first mounting bracket 210. One end of the first adjusting plate 510 is fixed to the first mounting bracket 210, including but not limited to clamping, screwing, bonding, welding or bolting. The first adjusting plate 510 is provided with a first mounting portion 520 and a second mounting portion 530 at an end thereof away from the first mounting bracket 210, the first mounting portion 520 is connected to the third handle 321, and the second mounting portion 530 is connected to the fourth handle 322. Thus, the third handle 321 and the fourth handle 322 are connected to the first adjusting plate 510, and the first adjusting plate 510 limits the movement of the third handle 321 and the fourth handle 322, that is, the third handle 321 and the fourth handle 322 cannot effectively drive the second valve rod and the fourth valve rod on the left side of the rack 10, so that the extension and retraction of the right front leg and the right rear leg cannot be controlled, and the occurrence rate of safety accidents is reduced.

Further, the first mounting portion 520 and the third handle 321 are connected by a first adjusting member 540, and the second mounting portion 530 and the fourth handle 322 are connected by a first adjusting member 540. The distance between first regulating plate 510 and third handle 321 can be adjusted in the setting of first regulating part 540, and the distance between first regulating plate 510 and fourth handle 322, make things convenient for first regulating plate 510 fixed to third handle 321 and fourth handle 322, because in a plurality of valve stems of manufacturing reason multiple unit valve 20, every valve stem control oil circuit is opened, the stroke when closing is different, in order to adapt to the stroke of different valve stems, can realize the complete locking to different stroke valve stems through setting up first regulating part 540, the flexibility and the commonality of use improve, and further improve the security of oil circuit control.

In this embodiment, the first adjusting member 540 is an adjusting screw or an adjusting screw, and the first mounting portion 520 and the third handle 321 are connected as an example. Set up first screw hole on the first installation department 520, set up corresponding second screw hole on the third handle 321, be equipped with the external screw thread on the adjusting screw, and suit with first screw hole and second screw hole respectively, insert adjusting screw in first screw hole and second screw hole in proper order, screw up adjusting screw, realize the locking of first installation department 520 and third handle 321. For valve rods with different strokes, the locking of the handle corresponding to the valve rod can be realized by appropriately screwing or unscrewing the adjusting screw. The structure and principle of the connection between the second mounting portion 530 and the fourth handle 322 via the first adjustment member 540 are similar to those described above, and are not particularly limited herein. Of course, the first adjusting member 540 can also adopt other adjusting components besides the adjusting screw, such as an elastic member, and the like, and is not limited in this regard.

Taking the right side (second side) of the frame 10 as an example, the second adjusting assembly 60 includes a second adjusting plate 610, one end of the second adjusting plate 610 is connected to the frame 10, and the other end is connected to the second left operating member 410. Optionally, one end of the second adjusting plate 610 is fixed to the second mounting bracket 220, including but not limited to clamping, screwing, bonding, welding or bolting. One end of the second adjusting plate 610, which is far away from the second mounting bracket 220, is provided with a third mounting part 620 and a fourth mounting part 630, the third mounting part 620 is connected with the fifth handle 411, and the fourth mounting part 630 is connected with the sixth handle 412. Thus, the fifth handle 411 and the sixth handle 412 are respectively connected with the second adjusting plate 610, and the second adjusting plate 610 limits the movement of the fifth handle 411 and the sixth handle 412, that is, the fifth handle 411 and the sixth handle 412 cannot effectively drive the first valve rod and the third valve rod on the right side of the frame 10, so that the extension and retraction of the left front leg and the left rear leg cannot be controlled, and the occurrence rate of safety accidents is reduced.

Further, the third mounting part 620 is connected to the fifth handle 411 through a second adjuster 640, and the fourth mounting part 630 and the sixth handle 412 are connected through a second adjuster 640. The distance between second regulating plate 610 and the fifth handle 411 can be adjusted in the setting of second regulating part 640 to and the distance between second regulating plate 610 and the sixth handle 412, make things convenient for the second regulating plate 610 to the fixed of fifth handle 411 and sixth handle 412, can adapt to the stroke of different valve stems through setting up second regulating part 640, realize the complete locking to different stroke valve stems, improve the flexibility and the commonality of using, and further improve the security of oil circuit control. The structures of the first and second adjusting plates 510 and 610 are not limited to the above description, and in other alternative embodiments, the shape of the adjusting plate, the structure, shape, and number of the plurality of mounting portions on the adjusting plate may be flexibly set, and are not particularly limited herein.

Alternatively, the first left operating member 310 and the second left operating member 410 are connected by a link, and the first right operating member 320 and the second right operating member 420 are connected by a link for connecting with the valve stem of the multiplex valve 20. Connecting rods are respectively arranged between the first handle 311 and the fifth handle 411, between the third handle 321 and the seventh handle 421, between the second handle 312 and the sixth handle 412, and between the fourth handle 322 and the eighth handle 422. The first adjusting plate 510 is connected with the third handle 321 and the fourth handle 322 through the first adjusting piece 540, the second adjusting plate 610 is connected with the fifth handle 411 and the sixth handle 412 through the second adjusting piece 640, bilateral interlocking of leg manipulation is achieved, when an operator is located on the left side, the operator can only operate stretching of a left side leg within a visual line visible range, when the operator is located on the right side, the operator can only operate stretching of a right side leg within the visual line visible range, and operation safety is greatly improved.

It should be noted that, besides the eight handles for controlling the extension and retraction of the legs, the multi-way valve 20 is further connected with other operation handles, for example, for controlling the on/off of the main valve in the multi-way valve 20, or for controlling the actions of other components of the crane, and the arrangement and number of the operation handles and the specific structure of the multi-way valve 20 can be flexibly adjusted and set according to the actual working requirement of the crane, which is not limited specifically herein.

The supporting leg operating device provided by the embodiment of the invention has the following working principle:

on the left side of the frame 10, the first adjusting plate 510 is connected to the third handle 321 and the fourth handle 322 through the first adjusting member 540, respectively, so that the third handle 321 on the left side cannot drive the second valve rod to move and the fourth handle 322 on the left side cannot drive the fourth valve rod to move. Thus, the operator can only control the extension and contraction of the left leg on the left side by the first handle 311 and the second handle 312, but cannot control the extension and contraction of the right leg. Similarly, on the right side of the housing 10, the second adjustment plate 610 is connected to the fifth handle 411 and the sixth handle 412 via the second adjustment member 640, respectively, such that the fifth handle 411 on the right side cannot drive the first valve stem to move and the sixth handle 412 on the right side cannot drive the third valve stem to move. Therefore, an operator can only control the extension and contraction of the right leg through the seventh handle 421 and the eighth handle 422 on the right side, but cannot control the extension and contraction of the left leg, and the operation safety is greatly improved.

In addition, the first adjusting piece 540 and the second adjusting piece 640 are respectively arranged on the first adjusting plate 510 and the second adjusting plate 610, so that the valve rod locking device can be suitable for complete locking of various valve rods with different strokes, and is good in universality and flexible and convenient to use. It should be noted that the first adjusting plate 510 and the first mounting bracket 210, and the second adjusting plate 610 and the second mounting bracket 220 may also be detachably fixed, and selectively lock different operating handles under different working conditions, so as to adapt to the control of the multi-way valves 20 of different models, so as to improve the operation safety.

The embodiment of the invention also provides a crane, which comprises a support leg, a multi-way valve 20 and a support leg operating device as in any one of the previous embodiments, wherein the support leg operating device is connected with the multi-way valve 20, and the multi-way valve 20 is connected with the support leg. This hoist has bilateral controllable interlocking's landing leg operating means, sets up first regulating plate 510 and second regulating plate 610 respectively through the both sides at the hoist, can realize can only controlling the flexible of left side landing leg in the left side of hoist, can only operate the flexible of right side landing leg in the right side of hoist, reduces the accident rate, improves the operation security, and the commonality is good, and adaptability is strong. Of course, the support leg operating device is not limited to be applied to a crane, and can also be applied to other engineering machines such as other excavators and high-altitude machines.

In summary, the embodiment of the invention provides a support leg operating device and a crane, which have the following beneficial effects:

according to the supporting leg operating device and the crane provided by the embodiment of the invention, the first adjusting plate 510 and the second adjusting plate 610 are respectively arranged on the two sides of the crane, so that the left side of the crane can only control the stretching of the left supporting leg, and the right side of the crane can only operate the stretching of the right supporting leg, the accident rate is reduced, and the operation safety is improved. And set up first regulating part 540 and second regulating part 640 on first regulating plate 510 and second regulating plate 610 respectively, can adapt to the complete locking of the valve rod of various different strokes, the commonality is good, adaptability is strong.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.