Structure for preventing rope skipping of steel wire rope of cantilever crane and cantilever crane

Abstract

The utility model discloses an arm support structure for preventing a steel wire rope from skipping and an arm support, which relate to the technical field of engineering machinery and comprise an arm support, a first fixing plate, a second fixing plate, a rope blocking shaft and a fixing component. The arm support is provided with a first side face and a second side face which are opposite and parallel to the axis of the arm support. The first fixing plate is arranged on the arm support and located on the first side face, and a through hole is formed in the first fixing plate; at least one second fixing plate is arranged on the second side surface, and a notch is formed in the second fixing plate; the rope blocking shaft is provided with an inserting end and a fixing end, the rope blocking shaft penetrates through the notch, and the inserting end is inserted into the through hole; the fixing assembly can fix the fixing end to the second fixing plate located on the second side face. According to the boom structure for preventing the steel wire rope from skipping and the boom, the rope skipping prevention structure can be assembled in the boom, the assembling process is more convenient, and the structural strength of the boom cannot be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field, especially a kind of structure and arm support of arm support anti steel wire rope skipping rope. BACKGROUND

[0002] In aerial work platform, arm support is a vital structural component, which is responsible for lifting tools or equipment to the desired aerial work position. Arm support is usually a telescopic mechanical structure used to extend the working range to a specific height.

[0003] Steel wire rope is usually provided in arm support, which is an important load-bearing device on arm support, and bears the weight of suspended and carried objects. The load pulled by steel wire rope changes, and the steel wire rope itself is also in a state of tension and relaxation. During the change of state, the steel wire rope may jump out of the pulley. Therefore, an anti-skip rope structure is provided on the arm support to prevent the steel wire rope from jumping out of the pulley.

[0004] The anti-skip rope structure provided on the arm support is very troublesome to disassemble and assemble, and also affects the structure of the arm support, resulting in a decrease in the structural strength of the arm support. SUMMARY

[0005] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a structure and arm support of arm support anti steel wire rope skipping rope, which can assemble the anti-skip rope structure in the arm support, and the assembly process is more convenient, without reducing the structural strength of the arm support.

[0006] According to the structure of the utility model for preventing steel wire rope from skipping rope of arm support, the arm support has opposite first side and second side, and the first side and the second side are parallel to the axis of the arm support.

[0007] The first fixed plate is provided on the arm support, and the first fixed plate is located on the first side. The first fixed plate is provided with a through hole.

[0008] The second fixed plate is provided with a slot, and the second fixed plate is provided on the second side.

[0009] The rope blocking shaft has a plug-in end and a fixed end, the rope blocking shaft passes through the slot, and the plug-in end is plugged into the through hole.

[0010] The fixed assembly can fix the fixed end on the second fixed plate on the second side.

[0011] According to the arm support anti-steel wire rope skipping rope structure, the following beneficial effects are achieved: the rope blocking shaft does not need to pass from one side of the arm support to the other side of the arm support, but can be first placed in the notch of the second fixed plate, then axially moved, inserted into the through hole of the first fixed plate, and finally fixed on the second fixed plate by using the fixing assembly, so that the installation of the rope blocking shaft is completed, the structure does not need to damage the side wall of the arm support and the arm cylinder, and the structural strength of the arm support and the arm cylinder is not reduced; meanwhile, the rope blocking shaft is more convenient to disassemble and assemble.

[0012] According to some embodiments of the utility model, the notch is a strip-shaped groove, one end of the strip-shaped groove is open, and the end of the strip-shaped groove away from the opening is coaxial with the through hole.

[0013] According to some embodiments of the utility model, the second fixed plate on the second side is provided with a fixed part, the fixed part is located on the side surface of the second fixed plate away from the first fixed plate, and the fixing assembly connects the fixed end and the fixed part.

[0014] According to some embodiments of the utility model, the fixed end is provided with a connecting plate, the connecting plate is provided with a first connecting hole, the first connecting hole cooperates with the fixed part, and the connecting plate is fixed on the second fixed plate through the fixing assembly.

[0015] According to some embodiments of the utility model, the fixed part is a threaded column, the threaded column passes through the first connecting hole, the threaded column is provided with a nut, and the nut cooperates with the threaded column to fix the connecting plate.

[0016] According to some embodiments of the utility model, the fixed part is a second connecting hole, the second connecting hole is provided with threads, the second fixed plate is provided with a bolt, the bolt passes through the first connecting hole and cooperates with the second connecting hole in threads.

[0017] According to some embodiments of the utility model, the first connecting hole is a strip-shaped hole.

[0018] According to the arm support of the second aspect of the embodiments of the utility model, the arm support anti-steel wire rope skipping rope structure is used.

[0019] According to the arm support of the embodiments of the utility model, the following beneficial effects are achieved: the installation of the rope blocking shaft can be completed without damaging the side wall of the arm support and the arm cylinder, the structural strength of the arm support and the arm cylinder is not reduced, and meanwhile, the rope blocking shaft is more convenient to disassemble and assemble.

[0020] According to some embodiments of the utility model, the arm support is provided with a pulley, the pulley is used for winding a steel wire rope, the pulley is located between the first side and the second side, and the end surface of the pulley is parallel to the first side.

[0021] According to some embodiments of the utility model, the arm support has multiple groups of pulleys, the multiple groups of pulleys are arranged side by side, the second fixing plate is provided with multiple pieces, both side end faces of the pulley are provided with the second fixing plate, or one side end face of the pulley is provided with the second fixing plate, and the other side end face is provided with the first fixing plate.

[0022] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further explained in combination with the drawings and embodiments, wherein:

[0024] Figure 1 It is the structure's schematic view of arm support preventing steel wire rope skipping rope of the utility model embodiment;

[0025] Figure 2 It is the structure's schematic view of arm support preventing steel wire rope skipping rope of the utility model embodiment from the second side;

[0026] Figure 3 It is the structure's schematic view of arm support preventing steel wire rope skipping rope of the utility model embodiment from the first side.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] Arm support 100, first fixing plate 200, through hole 210, second fixing plate 300, slot 310, rope blocking shaft 400, connecting plate 410, first connecting hole 411, fixing assembly 500, bolt 600, pulley 700. DETAILED DESCRIPTION

[0029] The embodiments of the utility model will be described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0030] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship of the indication such as up and down, is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implicit that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0031] In the description of the utility model, more refers to two or more. If there is a description of first, second, it is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0032] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood broadly, and the person skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0033] The outer side of the arm support is further provided with an arm cylinder parallel to the arm support, and the arm support and the arm cylinder jointly constitute an arm support assembly. With the light weight design of the aerial work vehicle being followed more and more, the sectional dimension of the arm cylinder has been further reduced, and the space between the arm support and the arm cylinder is further compressed.

[0034] However, the anti-rope jumping structure arranged on the arm support is all by using a rope blocking shaft to pass through the fixed plate. The rope blocking shaft limits the steel wire rope in the guide groove of the pulley, and the structure prevents the steel wire rope from jumping out of the pulley. It needs to be understood that both ends of the rope blocking shaft need to be fixed to limit the steel wire rope between the rope blocking shaft and the arm support. In a structure for connecting the rope blocking shaft, both sides of the arm support are provided with through holes, the rope blocking shaft is inserted from the through hole on one side and is taken out from the through hole on the opposite side, and then the rope blocking shaft is fixed axially, that is, the setting of the anti-rope jumping structure is completed. However, since the length of the rope blocking shaft is greater than the width of the arm support, and the sectional dimension of the arm cylinder is also small, the rope blocking shaft cannot be installed from the gap between the arm cylinder and the arm support. The existing technical means is to open an assembly hole on the side wall of the arm cylinder, and the assembly hole is coaxial with the through holes on both sides of the arm support, so that the rope blocking shaft can be installed on the outside of the arm cylinder. Specifically, the rope blocking shaft is inserted through the arm cylinder and then further inserted into the through hole of the arm support.

[0035] Since the above-mentioned method needs to open an assembly hole on the arm cylinder, the structural strength of the arm cylinder is reduced. At the same time, if the anti-rope jumping structure needs to be disassembled, the arm support assembly also needs to be disassembled, which is a large amount of work.

[0036] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model discloses an arm support anti-steel wire rope jumping structure, which comprises an arm support 100, a first fixed plate 200, a second fixed plate 300, a rope blocking shaft 400 and a fixed assembly 500.

[0037] The arm support 100 has opposite first and second sides, both of which are parallel to the axis of the arm support 100; the first fixing plate 200 is arranged on the arm support 100, and the first fixing plate 200 is located on the first side and has a through hole 210; the second fixing plate 300 is arranged on the second side and has a notch 310; the rope blocking shaft 400 has an insertion end and a fixing end, the rope blocking shaft 400 passes through the notch 310 and the insertion end is inserted into the through hole 210; and the fixing assembly 500 can fix the fixing end on the second fixing plate 300 on the second side.

[0038] The first and second fixing plates 200 and 300 are arranged on the arm support 100, and provide a fixing basis for the two ends of the rope blocking shaft 400, i.e., the insertion end is fixed in the through hole 210 and the fixing end is fixed in the notch 310. When assembling the rope blocking shaft 400, the insertion end of the rope blocking shaft 400 can be first placed close to the first fixing plate 200, and the rope blocking shaft 400 is placed in the notch 310; when the rope blocking shaft 400 enters the notch 310, the insertion end is naturally coaxial with the through hole 210, the rope blocking shaft 400 is axially moved, and the insertion end is inserted into the through hole 210. Finally, the fixing end is connected with the second fixing plate 300 by the fixing assembly 500, and the installation of the rope blocking shaft 400 is completed.

[0039] When the rope blocking shaft 400 needs to be disassembled, the fixing assembly 500 is first removed, and then the rope blocking shaft 400 is axially moved to move the insertion end out of the through hole 210, and then the rope blocking shaft 400 can be taken out of the notch 310. When the rope blocking shaft 400 is axially moved, the moving distance of the rope blocking shaft 400 does not need to be greater than the width of the arm support 100.

[0040] In the structure of the arm support for preventing the steel wire rope from jumping in the application, the rope blocking shaft 400 does not need to be moved from one side of the arm support 100 to the other side along the axis, i.e., the moving distance of the rope blocking shaft 400 can be less than the width of the arm support 100, and there is no need to open a hole in the side wall of the arm cylinder or damage the structure of the arm cylinder.

[0041] In some embodiments, only one second fixing plate 300 can be arranged, but the second fixing plate 300 needs to be installed on the second side, so that the first and second fixing plates 200 and 300 can form a symmetrical structure to fix the two ends of the rope blocking shaft 400, i.e., the insertion end and the fixing end are fixed respectively.

[0042] In some other embodiments, multiple second fixing plates 300 can be provided, and one second fixing plate 300 is provided on the second side surface, and the remaining second fixing plates 300 are distributed between the first side surface and the second side surface. When two or more second fixing plates 300 are provided, the notches 310 of the multiple second fixing plates 300 are oriented in the same direction, and the rope blocking shaft 400 can be moved into the notches 310.

[0043] It can be understood that the notch 310 is a strip-shaped slot, and one end of the strip-shaped slot is open, and the other end of the strip-shaped slot is coaxial with the through hole 210.

[0044] The other end of the strip-shaped slot is the bottom end of the strip-shaped slot, that is, the bottom end of the notch 310, that is, the end of the strip-shaped slot coaxial with the through hole 210 is the bottom end of the notch 310. The rope blocking shaft 400 is moved into the notch 310 and placed at the bottom end of the notch 310, and at this time, the insertion end of the rope blocking shaft 400 is coaxial with the through hole 210, and the insertion end can be inserted into the through hole 210. At this time, the second fixing plate 300 can also support the rope blocking shaft 400.

[0045] It can be understood that the second fixing plate 300 located on the second side surface is provided with a fixing portion, and the fixing portion is located on the side surface of the second fixing plate 300 away from the first fixing plate 200. The fixing assembly 500 connects the fixing end and the fixing portion.

[0046] The side of the first fixing plate 200 and the second fixing plate 300 opposite to each other is the inner side, and vice versa. The fixing portion is located on the side surface of the second fixing plate 300 away from the first fixing plate 200, that is, the fixing portion is arranged on the outer side of the second fixing plate 300, which facilitates the installation and connection of the fixing assembly 500.

[0047] It can be understood that the fixing end is provided with a connecting plate 410, and the connecting plate 410 is provided with a first connecting hole 411. The first connecting hole 411 cooperates with the fixing portion, and the fixing assembly 500 is used to fix the connecting plate 410 to the second fixing plate 300.

[0048] The connecting plate 410 is fixed at one end of the rope blocking shaft 400, and the end of the rope blocking shaft 400 is the fixing end, and the opposite end is the insertion end. Preferably, the side surface of the connecting plate 410 is perpendicular to the axial direction of the rope blocking shaft 400. The connecting plate 410 can be fixed to the rope blocking shaft 400 by welding. The connecting plate 410 is provided with a first connecting hole 411, which can cooperate with the fixing portion. Specifically, there are at least two cooperation modes.

[0049] It can be understood that the first cooperation mode between the fixing portion and the first connecting hole 411 is as follows. The fixing portion is a threaded column, the threaded column passes through the first connecting hole 411, the threaded column is provided with a nut, and the nut cooperates with the threaded column to fix the connecting plate 410.

[0050] After the threaded column passes through the first connecting hole 411, the connecting plate 410 can be in contact with the second fixing plate 300, and the other side of the connecting plate 410 in contact with the second fixing plate 300 is a nut. The nut and the second fixing plate 300 fix the connecting plate 410 to achieve the fixation of the rope blocking shaft 400, that is, the rope blocking shaft 400 cannot be taken out of the slot 310.

[0051] It can be understood that the second fixing part and the first connecting hole 411 are matched in the following manner: the fixing part is a second connecting hole, the second connecting hole is provided with threads, the second fixing plate 300 is provided with a bolt 600, and the bolt 600 passes through the first connecting hole 411 and is matched with the second connecting hole in a threaded manner.

[0052] After the bolt 600 passes through the first connecting hole 411 and is screwed into the second connecting hole, the connecting plate 410 can be abutted against the second fixing plate 300.

[0053] It can be understood that in the above two matching manners of the fixing part and the first connecting hole 411, the first connecting hole 411 is a strip-shaped hole.

[0054] Since there is a machining error between the connecting plate 410 and the rope blocking shaft 400, that is, there can be an error between the size of the first connecting hole 411 and the axis of the rope blocking shaft 400 and the design size. At the same time, when the fixing part is machined on the second fixing plate 300, there can be an error between the size of the fixing part and the slot 310 and the design size. Therefore, after the rope blocking shaft 400 is moved into the slot 310, the circular first connecting hole 411 can not be matched with the fixing part, and the strip-shaped first connecting hole 411 can be matched with the fixing part.

[0055] An arm support according to an embodiment of the utility model comprises the structure of the arm support for preventing the steel wire rope skipping.

[0056] It can be understood that the arm support 100 is provided with a pulley 700 for winding the steel wire rope, the pulley 700 is located between the first side and the second side, and the end surface of the pulley 700 is parallel to the first side.

[0057] Generally, the arm support 100 is provided with a plurality of pulleys 700, the plurality of pulleys 700 are arranged side by side, the second fixing plate 300 is provided with a plurality of, the two side end surfaces of the pulley 700 are provided with the second fixing plate 300, or one side end surface of the pulley 700 is provided with the second fixing plate 300, and the other side end surface is provided with the first fixing plate 200.

[0058] Although the pulley 700 is provided with a guide groove, the steel wire rope moves in the guide groove, but in an extreme case, the steel wire rope still jumps into the adjacent pulley 700. After the first fixing plate 200 and the second fixing plate 300 are arranged according to the above structure, the steel wire rope is limited by the first fixing plate 200 and the second fixing plate 300 and cannot jump into the adjacent pulley 700.

[0059] The utility model embodiment has been explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiment, still can make various changes in the knowledge range possessed by the ordinary skilled in the art without departing from the utility model's tenet.

Claims

1. A structure for a boom-mounted anti-steel wire rope jump rope, characterized in that, The utility model relates to an arm support anti steel wire rope skipping structure, including: An arm support (100) has opposite first side and second side, both with the axis of the arm support (100) parallel; First fixed plate (200) is arranged in the arm support (100), and the first fixed plate (200) is located at the first side, and the first fixed plate (200) is provided with through -hole (210); Second fixed plate (300) is provided with at least one, and the second side is provided with the second fixed plate (300), and the second fixed plate (300) is provided with notch (310); Rope blocking shaft (400) has insertion end and fixed end, and the rope blocking shaft (400) passes through the notch (310), and the insertion end is inserted in the through -hole (210); Fixed assembly (500) can fix the fixed end in the second fixed plate (300) located at the second side.

2. The structure of the arm support anti-wire rope jumping rope according to claim 1, characterized in that, The notch (310) is strip -shaped groove, and one end of the strip -shaped groove is open, and the end away from the opening of the strip -shaped groove is coaxial with the through -hole (210).

3. The structure of the arm support anti-wire rope jumping rope according to claim 1, characterized in that, The second fixed plate (300) located at the second side is provided with a fixed part, and the fixed part is located on the side surface of the second fixed plate (300) away from the first fixed plate (200), and the fixed assembly (500) connects the fixed end with the fixed part.

4. The structure of the arm support anti-wire rope jumping rope according to claim 3, characterized in that, The fixed end is provided with a connecting plate (410), and the connecting plate (410) is provided with a first connecting hole (411), and the first connecting hole (411) is matched with the fixed part, and the connecting plate (410) is fixed on the second fixed plate (300) through the fixed assembly (500).

5. The structure of the arm support anti-wire rope jumping rope according to claim 4, characterized in that, The fixed part is a threaded column, the threaded column passes through the first connecting hole (411), and the threaded column is provided with a nut, and the nut is matched with the threaded column to fix the connecting plate (410).

6. The structure of the arm-stand wire-rope-jumping-preventing skipping rope according to claim 4, wherein The fixed part is a second connecting hole, and the second connecting hole is provided with a thread, and the second fixed plate (300) is provided with a bolt (600), and the bolt (600) passes through the first connecting hole (411) and is matched with the second connecting hole.

7. The structure of the arm- support anti-steel- wire rope jumping rope according to claim 5 or 6, characterized in that, The first connecting hole (411) is a strip hole.

8. An arm support, characterized in that The utility model relates to an arm support anti steel wire rope skipping structure.

9. The boom of claim 8, wherein, The arm support (100) has a plurality of pulleys (700), and the plurality of pulleys (700) are arranged side by side, and the second fixed plate (300) is provided with a plurality of pulleys (700), and the two side surfaces of the pulley (700) are provided with the second fixed plate (300), or one side surface of the pulley (700) is provided with the second fixed plate (300), and the other side surface is provided with the first fixed plate (200).

10. The arm as claimed in claim 9, characterized in that ​

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