Counterweight hooking structure and crane

Abstract

The utility model discloses a counterweight hitching structure and a crane, which comprise a plurality of counterweight blocks to be hitched, a hitching part is arranged between the adjacent counterweight blocks, the hitching part comprises a first hitching piece arranged at the bottom of the upper counterweight block and a second hitching piece arranged at the top of the lower counterweight block, and the first hitching piece is connected with the second hitching piece. And the first hanging piece and the second hanging piece of the same hanging part are detachably and fixedly connected. According to the counterweight hooking structure, the detachably connected hooking parts are arranged between the adjacent counterweight blocks, counterweight hooking is achieved without depending on a counterweight base, the operation difficulty is small, and convenience and rapidness are achieved; compared with a bolt fastening counterweight hanging structure, the mounting and dismounting are more convenient; the hanging part is provided with four hanging points in the front-back direction and the left-right direction of the balancing weight to limit gap swing of the pin hole after hanging, and the vertical direction is limited through attachment of the positioning boss and the end face of the balancing weight.

Description

Technical Field

[0001] The utility model relates to a counterweight hanging structure and a crane, belonging to the technical field of engineering machinery. Background Art

[0002] A mobile crane is a jib crane that can be equipped with columns (towers), can travel along trackless roads with or without loads, and relies on its own weight to maintain stability. The stability of a mobile crane is mainly achieved by attaching a counterweight to the tail of the turntable. The convenience of attaching the counterweight has become an important factor affecting the operating efficiency of the crane. In order to improve the operating efficiency and transfer efficiency of the crane, the way to attach the counterweight has become an important research aspect of the technical development of the crane industry.

[0003] There are two main types of existing counterweight fixation. One is to hang it through a cylinder. This method cannot ensure the safety of driving and carrying, and the driving safety and reliability cannot be guaranteed; the other is to fasten it through long bolts. Disassembly and assembly is time-consuming and labor-intensive, and auxiliary lifting is required. It is not suitable for occasions where the counterweight needs to be disassembled and assembled and where the driving and carrying needs to be met at the same time. Summary of the invention

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a counterweight hanging structure and a crane, wherein a bracket is welded on the counterweight block and matched with a pin shaft to achieve hanging; the hanging type is convenient and fast, low in cost, has low requirements on operators, and is simple to operate.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] The utility model provides a counterweight hanging structure, comprising a plurality of counterweight blocks to be hung, a hanging part is arranged between adjacent counterweight blocks, the hanging part comprises a first hanging member arranged at the bottom of the upper counterweight block and a second hanging member arranged at the top of the lower counterweight block, and the first hanging member and the second hanging member of the same hanging part are detachably fixedly connected.

[0007] Furthermore, a plurality of the hanging parts between adjacent balancing weights are provided around the circumference of the balancing weights.

[0008] Furthermore, four hanging parts are provided between adjacent balancing weights, which are respectively arranged at the front, rear, left and right positions of the balancing weight.

[0009] Furthermore, the first hanging member and the second hanging member are connected by a pin shaft and fixed by a limiting fixing member.

[0010] Furthermore, the first hanging member and the second hanging member are correspondingly provided with pin holes.

[0011] Furthermore, the first hanging component is a bracket, the second hanging component is a hanging ear matching the bracket, and the bracket and the hanging ear are both welded to the balancing weight.

[0012] Further, the bracket is a double-plate bracket, and the lug is a single-plate lug. According to the actual application or the shape of the counterweight, it can also be set as a single-plate bracket and a double-plate lug, or a hanging part of other shapes.

[0013] Furthermore, the limiting fixing member is a clip or a limiting pin, which is inserted into a limiting hole on the pin shaft to limit the pin shaft.

[0014] Furthermore, the end faces of the adjacent balancing weights are fitted together, and the interiors are matched and positioned by positioning bosses.

[0015] The utility model also provides a crane, and the rotating platform of the crane is provided with the above-mentioned counterweight hanging structure.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The counterweight hanging structure of the utility model realizes the counterweight hanging by arranging a detachably connected hanging part between adjacent counterweight blocks, which is independent of the counterweight base, has low operation difficulty, is convenient and quick; and is more convenient to disassemble and assemble than the bolt-fastened counterweight hanging structure;

[0018] The hanging part of the utility model arranges four hanging points in the front-back direction and the left-right direction of the counterweight block, which limits the clearance swing of the pin hole after hanging, and the up-down direction is limited by the positioning boss and the end face fitting of the counterweight block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an unassembled state of a counterweight hanging structure provided by Example 1 of the utility model;

[0020] Figure 2 It is a schematic diagram of the assembly state of a counterweight hanging structure provided in Example 1 of the utility model.

[0021] In the figure: 1, bracket; 2, hanging ear; 3, pin shaft; 4, clip; 5, first balancing weight; 6, second balancing weight; 7, third balancing weight; 8, positioning boss. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] Example 1

[0026] The utility model provides a counterweight hanging structure, such as Figure 1 and Figure 2 As shown, it includes several balancing weights to be hung, and a hanging part is set between adjacent balancing weights, and the hanging part includes a bracket 1 and a hanging ear 2. Figure 1 As shown, the bracket 1 is a double-plate bracket, which is welded to the bottom of the counterweight block, and the ear 2 is a single-plate ear, which is welded to the top of the counterweight block. The bracket 1 and the ear 2 are provided with corresponding pin holes. The bracket 1 and the ear 2 of the same hanging part are connected by a pin 3 and fixed by a clip 4. The clip 4 is inserted into the limiting hole on the pin 3 to limit the pin 3 and prevent the pin 3 from detaching.

[0027] In this embodiment, four hanging parts between adjacent balancing weights are provided around the circumference of the balancing weights, respectively arranged at the front, rear, left and right positions of the balancing weights, to limit the clearance swing of the pin holes after hanging.

[0028] In this embodiment, there are three counterweights to be mounted, such as Figure 1As shown, from top to bottom are the first balancing weight 1, the second balancing weight 2 and the third balancing weight 3. The upper and lower end surfaces of adjacent balancing weights are fitted together, and the interior is matched and positioned by a positioning boss 8 to limit the swinging in the up and down directions.

[0029] When the crane needs to attach the counterweight, lift the second counterweight 2 to a suitable height, use the positioning boss to determine the position, overlap the bracket 1 of the first counterweight 1 with the pin hole of the hook 2 of the second counterweight 2, insert the pin 3 into the hole, insert the clip 4 to prevent it from falling off, and the installation method of the pins in other positions is the same. When removing the counterweight, the method is opposite to the above order.

[0030] Example 2

[0031] The utility model provides a counterweight hanging structure, including a plurality of counterweight blocks to be hung, a hanging part is arranged between adjacent counterweight blocks, and the hanging part includes a bracket 1 and a hanging ear 2. The bracket 1 is welded to the bottom of the counterweight block, the hanging ear 2 is welded to the top of the counterweight block, the bracket 1 and the hanging ear 2 are correspondingly provided with pin holes, the bracket 1 and the hanging ear 2 of the same hanging part are connected by a pin 3, and fixed by a limit pin, and the limit pin (not shown in the figure) is inserted into the limit hole on the pin 3 to limit the pin 3 to prevent the pin 3 from being separated.

[0032] In this embodiment, four hanging parts between adjacent balancing weights are provided around the circumference of the balancing weights, respectively arranged at the front, rear, left and right positions of the balancing weights, to limit the clearance swing of the pin holes after hanging.

[0033] In this embodiment, there are three counterweights to be mounted, such as Figure 1 As shown, from top to bottom are the first balancing weight 1, the second balancing weight 2 and the third balancing weight 3. The upper and lower end surfaces of adjacent balancing weights are fitted together, and the interior is matched and positioned by a positioning boss 8 to limit the swinging in the up and down directions.

[0034] The method of using the counterweight hanging structure described in this embodiment is the same as that in Embodiment 1.

[0035] Example 3

[0036] This embodiment provides a crane, on which the turntable is provided with the counterweight hanging structure described in Embodiment 1.

[0037] When the crane needs to attach the counterweight, lift the counterweight B2 to a suitable height, use the positioning boss to determine the position, overlap the bracket 1 of the first counterweight 1 with the pin hole of the hook 2 of the second counterweight 2, insert the pin 3 into the hole, insert the clip 4 to prevent it from falling off, and the installation method of the pins in other positions is the same. When removing the counterweight, the method is opposite to the above order.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A counterweight mounting structure, characterized in that: It includes several balancing weights to be hung, and a hanging part is set between adjacent balancing weights. The hanging part includes a first hanging member set at the bottom of the upper balancing weight and a second hanging member set at the top of the lower balancing weight. The first hanging member and the second hanging member of the same hanging part are detachably fixedly connected.

2. The counterweight mounting structure according to claim 1, characterized in that: The hanging parts between adjacent balancing weights are provided in a plurality around the periphery of the balancing weights.

3. The counterweight mounting structure according to claim 2, characterized in that: Four hanging parts are arranged between adjacent counterweight blocks, and are respectively arranged at the front, rear, left and right positions of the counterweight blocks.

4. The counterweight mounting structure according to claim 1, characterized in that: The first hanging member and the second hanging member are connected by a pin shaft and fixed by a limiting fixing member.

5. The counterweight mounting structure according to claim 4, characterized in that: The first hanging member and the second hanging member are both provided with pin holes.

6. The counterweight mounting structure according to claim 5, characterized in that: The first hanging component is a bracket, and the second hanging component is a hanging ear matching the bracket. The bracket and the hanging ear are both welded to the balancing weight.

7. The counterweight mounting structure according to claim 6, characterized in that: The bracket is a double-plate bracket, and the hanging ear is a single-plate hanging ear.

8. The counterweight mounting structure according to claim 4, characterized in that: The limiting fixing member is a clip or a limiting pin, which is inserted into the limiting hole on the pin shaft to limit the pin shaft.

9. The counterweight mounting structure according to claim 1, characterized in that: The end faces of the adjacent balancing weights are fitted together, and the interiors are matched and positioned by positioning bosses.

10. A crane, characterized in that: The turntable of the crane is provided with a counterweight hanging structure as claimed in any one of claims 1 to 9.

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