Crane outrigger support device and crane

Abstract

The application relates to a crane outrigger support device and a crane, the crane outrigger support device comprising a fixed support part (2) and a movable support part (3), the fixed support part (2) comprising a first plate-shaped part (21) and a slide (25) arranged on the plate-shaped part (21) and extending along a first direction perpendicular to the thickness direction of the plate-shaped part (21); the movable support part (3) is slidably arranged in the slide (25) along the first direction to extend outwardly from the fixed support part (2) or retract inwardly into the fixed support part (2); the movable support part (3) is telescopically arranged in the slide (25) of the fixed support part (2), so that the length of the movable support part (3) extending from the fixed support part (2) can be changed according to different work sites, and the problem that the outrigger support device of the existing crane cannot be applied to various complex operation environments is solved.

Description

Technical Field

[0001] The present invention relates to the field of engineering machinery, and in particular to a crane leg supporting device and a crane. Background Art

[0002] When a crane is operating, the outrigger plates at the lower ends of the outriggers directly contact unhardened ground (such as mud). This excessive load can easily cause the ground to collapse, jeopardizing the crane's ability to operate properly, or even causing the crane to tip over. To prevent this, pads are typically placed between the outrigger plates and the ground to increase the support area and reduce the force exerted by the outriggers on the ground.

[0003] However, when operating in railway tunnels, high-speed railway bridges, and other special environments, due to the complexity of the bearing surface (there is a drainage ditch between the two adjacent lines in the railway tunnel, which cannot bear the load; most high-speed railway bridges are prestressed concrete simply supported box girders, and the ground bearing capacity between the two adjacent lines is weak), the existing technology has two problems when operating in the above-mentioned environments. First, the lifting capacity will not meet the requirements while ensuring that the load does not exceed the bearing capacity of the bearing surface. Second, under the premise of ensuring the lifting capacity, the load applied to the bearing surface by the support legs is too large, causing damage or collapse of the bearing surface, posing a major safety hazard.

[0004] The outrigger support device provided by the prior art usually lays a pad between the outrigger and the ground to increase the contact area between the outrigger and the ground, so as to reduce the force exerted by the outrigger on the ground. However, it does not take into account the working environment with weak or no load-bearing capacity in the middle (such as railway tunnels, high-speed railway bridge lines, etc.), which will lead to unsafe operation in such environment. The prior art has two problems when operating in the above environment. First, it may cause the lifting capacity to fail to meet the requirements while ensuring that the load does not exceed the load-bearing capacity of the load-bearing surface. Second, under the premise of ensuring the lifting capacity, the load applied to the load-bearing surface by the outrigger may be too large, causing the load-bearing surface (such as railway lines or high-speed railway bridges) to be damaged or collapsed, posing a major safety hazard. Summary of the Invention

[0005] The present invention aims to provide a crane leg supporting device and a crane, so as to improve the problem in the related art that the crane leg supporting device cannot be applied to a variety of sites.

[0006] According to one aspect of an embodiment of the present invention, the present invention provides a crane leg support device, the crane leg support device comprising:

[0007] a fixed support member comprising a first plate-shaped member and a slideway provided on the plate-shaped member and extending in a first direction perpendicular to a thickness direction of the plate-shaped member; and

[0008] The movable supporting component is slidably disposed in the slideway along a first direction so as to extend outward from the fixed supporting component or retract into the fixed supporting component.

[0009] In some embodiments, the slide extends from one end of the fixed support component to the other end, and each slide is correspondingly provided with two movable support components, which are respectively provided at both ends of the slide.

[0010] In some embodiments, a plurality of slideways are provided on the fixed support component, and the plurality of slideways are arranged side by side along a second direction perpendicular to the thickness direction of the fixed support component, and the second direction is perpendicular to the first direction.

[0011] In some embodiments, the movable support member includes a second plate-shaped member.

[0012] In some embodiments,

[0013] The fixed support member further includes a first handle provided on the first plate-shaped member; and / or

[0014] The movable supporting component includes a second plate-shaped component and a second handle provided on the second plate-shaped component.

[0015] In some embodiments, a first positioning portion is provided on the fixed support component, and the movable support component includes a plurality of second positioning portions arranged side by side along the first direction, and any second positioning portion can be connected to the first positioning portion to position the movable support component at a position extending out of the fixed support component by different lengths.

[0016] In some embodiments, the first positioning portion includes a first positioning hole, the second positioning portion includes a second positioning hole, and the crane leg supporting device further includes a first pin shaft, which is configured to be insertable into the first positioning hole and the second positioning hole.

[0017] The characteristic is that at least two first positioning parts arranged along the first direction are provided on the fixed support component.

[0018] In some embodiments, the crane leg supporting device further comprises a leg connecting portion for connecting the legs, and the leg connecting portion is mounted on the fixed supporting component.

[0019] In some embodiments, the leg connection portion includes a slot that allows the leg disc of the leg to be inserted horizontally and limits the movement of the leg disc in the vertical direction. The slot is configured to allow the leg disc to rotate within the slot so that the fixed support component can rotate around the leg.

[0020] In some embodiments, the leg connecting portion includes a cover plate, both sides of the cover plate are provided with protrusions protruding toward the fixed support component and connected to the fixed support component, a slot is formed between the cover plate and the fixed support component, and the cover plate is provided with an introduction slot, which is configured to allow the leg body of the leg to move along it during the process of inserting the leg plate into the slot.

[0021] In some embodiments, a limiting component is further included to limit the movement of the legs along the slots.

[0022] In some embodiments, the limiting component includes a second pin shaft, and a pin shaft hole allowing the second pin shaft to be inserted is provided on the leg connecting portion.

[0023] According to another aspect of the present invention, a crane is provided. The crane includes the above-mentioned crane leg supporting device.

[0024] In some embodiments, the crane includes road-traveling wheels and rail-traveling wheels.

[0025] By applying the technical solution of the present application, the movable support component can be telescopically arranged in the slide of the fixed support component, so that the support device can change the length of the movable support component extending out of the fixed support component according to different work sites, thereby improving the problem in the prior art that the outrigger support device of the crane cannot be applied to a variety of sites.

[0026] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram showing the three-dimensional structure of a crane leg supporting device according to an embodiment of the present invention is shown;

[0029] Figure 2 A schematic structural diagram showing a fixed support component of a crane leg support device according to an embodiment of the present invention;

[0030] Figure 3 A schematic structural diagram showing a movable support component of a crane leg support device according to an embodiment of the present invention;

[0031] Figure 4A schematic structural diagram showing a crane leg support device in a first working scenario according to an embodiment of the present invention; and

[0032] Figure 5 A schematic structural diagram of a crane leg supporting device in a second working scenario according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the crane leg support device of this embodiment includes a fixed support member 2 and a movable support member 3. The fixed support member 2 includes a first plate-shaped member 21 and a slide 25 provided on the plate-shaped member 21 and extending in a first direction perpendicular to the thickness direction of the plate-shaped member 21. The movable support member 3 is slidably provided in the slide 25 along the first direction to extend toward the outside of the fixed support member 2 or retract toward the inside of the fixed support member 2.

[0035] In this embodiment, the movable support component 3 can be telescopically arranged in the slide 25 of the fixed support component 2, so the support device can change the length of the movable support component 3 extending out of the fixed support component 2 according to different work sites, thereby improving the problem in the prior art that the outrigger support device of the crane cannot be applied to a variety of sites.

[0036] The slideway 25 extends from one end of the fixed support component 2 to the other end. Each slideway 25 is correspondingly provided with two movable support components 3 , and the two movable support components 3 are respectively provided at both ends of the slideway 25 .

[0037] A plurality of slideways 25 are provided on the fixed support component 2 . The plurality of slideways 25 are arranged side by side along a second direction perpendicular to the thickness direction of the fixed support component 2 . The second direction is perpendicular to the first direction.

[0038] like Figure 2 As shown, the first plate-shaped component 21 is a box-shaped structure that is hollow inside and is in the shape of a plate as a whole. A plurality of partitions 22 extending along the first direction are provided in the inner cavity of the first plate-shaped component 21. The plurality of partitions 22 are arranged side by side along the second direction to divide the inner cavity of the first plate-shaped component 21 into a plurality of slideways 25 arranged along the second direction.

[0039] In some embodiments, the movable supporting member 3 includes a second plate-shaped member 31. In some embodiments, the second plate-shaped member 31 is a hollow box-shaped structure.

[0040] like Figure 2 As shown, the fixed support member 2 further includes a first handle 24 provided on the first plate-shaped member 21; Figure 3 As shown, the movable supporting component 3 includes a second plate-shaped component 31 and a second handle 34 provided on the second plate-shaped component 31 .

[0041] Combine Figures 1 to 3 As shown, a first positioning portion 23 is provided on the fixed support component 2, and the movable support component 3 includes a plurality of second positioning portions 33 arranged side by side along the first direction. Any second positioning portion 33 can be connected to the first positioning portion 23 to position the movable support component 3 at a position extending out of the fixed support component 2 by different lengths.

[0042] The first positioning portion 23 includes a first positioning hole, the second positioning portion 33 includes a second positioning hole, and the crane leg supporting device further includes a first pin shaft 4 , which is configured to be insertable into the first positioning hole and the second positioning hole.

[0043] At least two first positioning portions 23 arranged along the first direction are provided on the fixed support component 2 , and the first pin shafts 4 are provided in a one-to-one correspondence with the first positioning portions 23 .

[0044] The movable support component 3 can be extended and retracted by the second handle 34; in actual use, the telescopic position of the movable support component 3 can be determined according to the conditions of the on-site load-bearing site. When the telescopic position of the movable support component 3 is determined, the two first pins 4 are respectively inserted into the two first positioning holes and the second positioning holes aligned with the first positioning holes, so as to achieve the purpose of limiting the movement of the movable support component 3; a nylon slider 32 is provided at the bottom of the movable support component 3, and the slider 32 can reduce the wear of the movable support 3 during the extension and retraction process. The outer side of the bottom of the movable support component 3 is paved with an anti-slip structure to increase the friction between the bottom of the movable support component 3 and the contact surface, so as to prevent the leg support device from slipping during operation.

[0045] In some embodiments, the fixed support component 2 further includes an anti-slip structure provided on the bottom surface of the first plate-shaped component 21 to increase the friction between the bottom of the fixed support component 2 and the contact surface to prevent the leg support device from slipping during operation.

[0046] The movable support component 3 further includes a slider 32 provided on the bottom surface of the second plate-shaped component 31 to reduce friction between the movable support component 3 and the fixed support component 2 , thereby ensuring that the movable support component 3 moves smoothly relative to the fixed support component 2 .

[0047] like Figure 1 The crane outrigger support device further comprises an outrigger connecting part 5 for connecting the outrigger 1, which is mounted on the fixed support part 2.

[0048] The outrigger 1 of the crane comprises an outrigger body and an outrigger disc 13 connected to the bottom of the outrigger body. The outrigger body comprises a cylinder 11 and a movable outrigger 12 which is extendable and retractable in the cylinder 11. In some embodiments, the movable outrigger 12 is below the cylinder 11, and the outrigger disc 13 is connected to the bottom end of the movable outrigger 12.

[0049] The outrigger connecting part 5 comprises a slot 51 which allows the outrigger disc 13 of the outrigger 1 to be inserted in a horizontal direction and restricts the movement of the outrigger disc 13 in a vertical direction. The slot 51 is configured to allow the outrigger disc 13 to rotate in the slot 51 with the axis of the outrigger 1 as the center of rotation, so that the fixed support part 2 can rotate around the outrigger 1.

[0050] The outrigger connecting part 5 comprises a cover plate 52, both sides of the cover plate 52 are provided with a flange 53 which protrudes towards the fixed support part 2 and is connected to the fixed support part 2, the slot 51 is formed between the cover plate 52 and the fixed support part 2, and a guide slot 54 is provided on the cover plate 52, which is configured to allow the outrigger body of the outrigger 1 to move along it during the insertion of the outrigger disc 13 into the slot.

[0051] The crane outrigger support device further comprises a limiting part 6 which limits the movement of the outrigger 1 along the slot 51.

[0052] In some embodiments, the limiting part 6 comprises a second pin shaft, and the outrigger connecting part 5 is provided with a pin shaft hole which allows the second pin shaft to be inserted.

[0053] The guide slot 54 is a "U" shaped slot, the outrigger connecting part 5 is fixed on the top of the fixed support 2, the cover plate 51 and the fixed support part 2 form a sliding slot 51 with both ends open; during the insertion of the outrigger disc 13 of the outrigger 1 into the sliding slot 51, the outrigger body can move along the "U" shaped guide slot 54, and the outrigger 1 can move flexibly in the outrigger connecting part 5; a series of pin shaft holes are opened on both sides of the outrigger connecting part 5, and the second pin shaft 6 penetrates the second pin shaft hole of the outrigger connecting part 5 to fix the outrigger 1; after the position of the outrigger 1 is determined, the second pin shaft 6 is inserted into the pin shaft hole at the corresponding position of the fixed seat, thereby limiting the movement of the outrigger.

[0054] Figure 4 And Figure 5 The working state diagram of the outrigger support device when performing lifting operations on the railway line. The working condition of the outrigger support device is not limited to the environment of railway tunnels, bridges and other environments, and can also be used in other places where the ground below the outrigger cannot bear or bears weakly. Figure 4This is a schematic diagram of the fully retracted state of the movable support. At this time, the outrigger support device is at its shortest length. (Taking the lifting operation environment of a railway tunnel as an example) Due to the narrow space in the tunnel, there is a drainage ditch 7 between two adjacent tracks, which cannot bear the load. However, the rail support platform 8 has a solid foundation and can be used as a load-bearing surface. At this time, the movable support can be fully retracted to the fixed support, and then the outrigger support device can be placed on the rail support platform 8 for lifting operations; Figure 5 This is a schematic diagram of the fully extended state of the movable support. At this time, the outrigger support device is the longest. (Take the high-speed railway bridge lifting operation environment as an example.) Since most high-speed railway bridges are prestressed concrete simply supported box girders, the load-bearing capacity in the middle is weak and the load-bearing capacity on both sides is strong. At this time, the movable support can be fully extended, and the outrigger support device can be placed on the rail plane 9 for lifting operations. In addition, in situations where the lower part of the other outriggers cannot bear loads or has weak load-bearing capacity, the extension and retraction of the movable support can be adjusted to different degrees according to the actual working conditions of the on-site load-bearing site to ensure that the outrigger support device is placed on a solid load-bearing surface. Figure 5 As shown, in some embodiments, a rail support platform 8 is formed on a railway bridge 10 , and rails are provided on the rail support platform 8 .

[0055] According to another aspect of the present invention, a crane is provided. The crane includes the above-mentioned crane leg supporting device.

[0056] In some embodiments, the crane is a road and rail crane comprising road wheels and rail wheels.

[0057] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A crane leg support device, characterized in that: include: A fixed support component (2) comprising a first plate-shaped component (21) and a slideway (25) provided on the plate-shaped component (21) and extending in a first direction perpendicular to a thickness direction of the plate-shaped component (21); and A movable support component (3) is slidably arranged in the slideway (25) along the first direction so as to extend toward the outside of the fixed support component (2) or retract toward the inside of the fixed support component (2). The slideway (25) extends from one end to the other end of the fixed support component (2), and each slideway (25) is correspondingly provided with two movable support components (3). The two movable support components (3) are slidably arranged at both ends of the slideway (25). When the movable support component (3) is in a fully retracted state, the length of the leg support device is the shortest, and when the movable support component (3) is in a fully extended state, the length of the leg support device is the longest, so that the leg support device can be placed on the rail plane (9) for lifting operations. The length of the leg support device along the first direction when the movable support component (3) is in a fully retracted state is shorter than that when the movable support component (3) is in a fully extended state. The movable supporting component (3) comprises a second plate-shaped component (31), The fixed support component (2) is provided with a first positioning portion (23), and the movable support component (3) includes a plurality of second positioning portions (33) arranged side by side along the first direction, and any of the second positioning portions (33) can be connected to the first positioning portion (23) to position the movable support component (3) at positions extending out of the fixed support component (2) by different lengths.

2. The crane leg support device according to claim 1, characterized in that: A plurality of slideways (25) are provided on the fixed support component (2), and the plurality of slideways (25) are arranged side by side along a second direction perpendicular to the thickness direction of the fixed support component (2), and the second direction is perpendicular to the first direction.

3. The crane leg supporting device according to claim 1, characterized in that: The fixed support component (2) further includes a first handle (24) provided on the first plate-shaped component (21); and / or The movable supporting component (3) comprises a second plate-shaped component (31) and a second handle (34) provided on the second plate-shaped component (31).

4. The crane leg supporting device according to claim 1, characterized in that: The first positioning portion (23) includes a first positioning hole, the second positioning portion (33) includes a second positioning hole, and the crane leg supporting device further includes a first pin shaft (4), and the first pin shaft (4) is configured to be insertable into the first positioning hole and the second positioning hole.

5. The crane leg supporting device according to claim 1, characterized in that: The fixed support component (2) is provided with at least two first positioning portions (23) arranged along the first direction.

6. The crane leg supporting device according to claim 1, characterized in that: It also includes a leg connecting portion (5) for connecting the legs (1), and the leg connecting portion (5) is fixedly connected to the fixed support component (2).

7. The crane leg supporting device according to claim 6, characterized in that: The leg connecting portion (5) includes a slot (51) that allows the leg disc (13) of the leg (1) to be inserted in the horizontal direction and limits the movement of the leg disc (13) in the vertical direction. The slot (51) is configured to allow the leg disc (13) to rotate within the slot (51), so that the fixed support component (2) can rotate around the leg (1).

8. The crane leg supporting device according to claim 7, characterized in that: The leg connecting portion (5) includes a cover plate (52), and both sides of the cover plate (52) are provided with ridges (53) protruding toward the fixed support component (2) and connected to the fixed support component (2). The slot (51) is formed between the cover plate (52) and the fixed support component (2). The cover plate (52) is provided with an introduction slot (54), and the introduction slot (54) is configured to allow the leg body of the leg (1) to move along the leg plate (13) during the process of inserting the leg plate (13) into the slot (51).

9. The crane leg supporting device according to claim 7, characterized in that: It also includes a limiting component (6) for limiting the movement of the supporting leg (1) along the slot (51).

10. The crane leg supporting device according to claim 9, characterized in that: The limiting component (6) includes a second pin shaft, and the leg connecting portion (5) is provided with a pin shaft hole allowing the second pin shaft to be inserted.

11. A crane, characterized in that: The crane leg supporting device comprises the crane leg supporting device according to any one of claims 1 to 10.

12. The crane according to claim 11, characterized in that The crane comprises road-traveling wheels and rail-traveling wheels.

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