Counterweight structure for ballasting multi-layer stacked vehicle body of crawler crane

Abstract

The utility model discloses a counterweight structure for ballasting a multi-layer stacked vehicle body of a crawler crane, which comprises a metal shell, and a support grid is arranged in the metal shell and divides an inner cavity of the metal shell into a plurality of cells. The structural form is optimized on the basis of an existing filling type balancing weight, the inner cavity of the metal shell is evenly filled with the balancing weight filler, it is guaranteed that weight distribution is even after concrete is solidified, potential safety hazards caused by weight unbalance are avoided, the strength of the balancing weight is enhanced through the internal supporting grids, the structure is not prone to deformation, and the service life of the balancing weight is prolonged. One-position multi-purpose and function integration of the lifting lug structure does not affect storage of a balancing weight, the using amount of plates is reduced, limiting in two directions can be achieved, a cross interlocking structure is utilized, the lifting lug and a seamless steel pipe are fixed and supported, interference connection is matched with a limiting piece, high efficiency and convenience are achieved, abrasion of the lifting lug structure is reduced, the service life of the device is prolonged, stacking and combination are firm and reliable, and the service life of the device is prolonged. The stability and the connection strength are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body ballast, in particular to a counterweight structure for multi-layer stacking of the vehicle body of a crawler crane for ballasting. Background Technique

[0002] Crawler cranes are an important classification of lifting machinery, with advantages such as high lifting performance, load-carrying walking, and adaptability to complex environments. Therefore, they play an important role in infrastructure construction, wind power construction, nuclear power construction, petrochemical construction, etc.

[0003] As a structure for crawler cranes to increase the lifting weight and lifting moment, the weight of the counterweight directly affects the lifting performance of the whole machine and cannot be reduced casually. At present, the crane market is dominated by sales orientation and price competition. How to reduce the manufacturing cost is crucial. Every product and every component is racking its brains to reduce costs. Reducing the counterweight cost plays an important role in optimizing the overall machine cost. The counterweight has evolved through steel plate type, cast iron type, and filling type, and the cost has been reduced step by step.

[0004] Taking the filling type counterweight block structure as an example, when a large required counterweight is needed, the counterweight is generally set as two or more blocks stacked. Since when the weight of a single counterweight block exceeds 10t, the requirements for the auxiliary crane required by the user are too high, so the weight of a single counterweight block is generally below 10t. For models above 260 tons, the required vehicle body counterweight generally exceeds 20t. Therefore, generally, a vehicle has 4 body counterweights, that is, 2 blocks in the front and 2 blocks in the back. And for 2 blocks stacked, there are requirements for limiting positions. The current form of adding counterweight blocks is to set semi-circular limiting holes and cylindrical limiting shafts at both ends of the counterweight block. After two groups of counterweight blocks are stacked up and down, the limiting shaft of the upper counterweight block falls into the limiting hole of the lower counterweight block to play a limiting role. However, at this time, the bottom surface of the limiting shaft is lower than the bottom surface of the counterweight block body. During transportation, it is necessary to pad the bottom surface of the counterweight block body, which is not convenient for transportation. Moreover, when processing the filling type counterweight block, it is also necessary to weld a lifting lug structure for convenient lifting use, and the lifting lug structure is easily damaged and the cost is not easy to control.

[0005] Therefore, it is necessary to invent a counterweight structure for multi-layer stacking of the vehicle body of a crawler crane to solve the above problems. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a counterweight structure for multi-layer stacking of the vehicle body of a crawler crane aiming at the deficiencies of the above-mentioned prior art, which can further reduce the production and use costs of the counterweight block on the premise of meeting safety and use requirements.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A multi-layer stacked body counterweight structure for a crawler crane, comprising a metal shell. Inside the metal shell, there is a support grid that divides the inner cavity of the metal shell into multiple cells. In each cell within the metal shell, counterweight fillers are filled. At the top of the support grid, a first lifting lug and a second lifting lug are fixedly connected, and the first lifting lug and the second lifting lug extend out of the top of the metal shell. Below the first lifting lug and the second lifting lug, there is a seamless steel pipe. The seamless steel pipe is welded to the support grid, and the bottom end of the seamless steel pipe penetrates the bottom wall of the metal shell and remains open. A sealing plate is welded to the top end of the seamless steel pipe;

[0009] Removably sleeved outside the first lifting lug and the second lifting lug are limit members, and the limit members are matched with the inner diameter of the seamless steel pipe.

[0010] Preferably, the support grid includes transverse rib plates and longitudinal rib plates. The transverse rib plates and the longitudinal rib plates are welded in a cross shape. The first lifting lug and the second lifting lug are respectively located at the intersection parts of two transverse rib plates and longitudinal rib plates, and the distances from the intersection parts of the two transverse rib plates and longitudinal rib plates where the first lifting lug and the second lifting lug are located to the two side walls of the metal shell are equal.

[0011] Preferably, the transverse rib plates and the longitudinal rib plates are both penetrated with overflow holes to communicate between adjacent cells.

[0012] Preferably, the counterweight fillers are set as concrete, and the concrete is evenly distributed in each cell through the overflow holes.

[0013] Preferably, the shaft holes of the first lifting lug and the second lifting lug are at the same horizontal height, and the two shaft holes are vertically arranged.

[0014] Preferably, the limit member includes a sleeve shaft. The outer diameter of the sleeve shaft is matched with the inner diameter of the seamless steel pipe, and a clamping groove matched with the first lifting lug or the second lifting lug is penetrated in the axial direction of the sleeve shaft. A pin hole matched with the shaft hole is penetrated on the outer peripheral surface of the sleeve shaft, and a pin shaft is jointly inserted into the pin hole and the shaft hole.

[0015] Preferably, the metal shell includes a storage box and an upper cover plate. The upper cover plate is detachably installed at the top of the storage box to form a sealed container after the inside of the metal shell is filled with counterweight fillers.

[0016] Preferably, two through holes are opened on the surface of the upper cover plate, and the two through holes are respectively matched with the outer diameter sizes of the first lifting lug and the second lifting lug.

[0017] Preferably, the metal shell is set as an integral structure, and a filling hole is opened on the upper surface of the metal shell for injecting counterweight fillers and exhausting air.

[0018] Preferably, both the first lifting lug and the second lifting lug are fixedly welded to the metal shell.

[0019] The utility model has the following beneficial effects:

[0020] 1. By optimizing the structural form on the basis of the existing filled counterweight block, the inner cavity of the metal shell is evenly filled with counterweight filler to ensure uniform weight distribution after the concrete solidifies, avoiding potential safety hazards caused by weight imbalance. The internal support grid enhances the strength of the counterweight block, making the structure not easily deformed. The multi-functional and integrated lifting lug structure does not affect the storage of the counterweight block, reduces the amount of sheet material used, can limit the position in two directions, uses the cross-interlocking structure to fix and support the lifting lug and the seamless steel pipe, and is connected with interference fit of the limiting part, which is efficient and convenient, reduces the wear of the lifting lug structure, extends the service life of the device, and the stacking combination is firm and reliable, with significantly improved stability and connection strength;

[0021] 2. Through the analysis of the cost composition, installation method, bearing form and use requirements of the counterweight block, an innovative vertical limit counterweight block structure for the lifting lug is formed to optimize the cost. Description of the Drawings

[0022] Figure 1 Schematic diagram of the counterweight structure (split state) provided by Embodiment 1 of the utility model;

[0023] Figure 2 First perspective schematic diagram of the counterweight structure (combined state) provided by Embodiment 1 of the utility model;

[0024] Figure 3 Second perspective schematic diagram of the counterweight structure (combined state) provided by Embodiment 1 of the utility model;

[0025] Figure 4 Schematic diagram of the use effect of the counterweight structure provided by Embodiment 1 of the utility model;

[0026] Figure 5 Schematic diagram of the counterweight structure (combined state) provided by Embodiment 2 of the utility model.

[0027] Among them:

[0028] Metal shell - 1; Support grid - 2; Cell - 3; First lifting lug - 4; Second lifting lug - 5; Seamless steel pipe - 6; Sealing plate - 7; Limiting part - 8;

[0029] Storage box - 11; Upper cover plate - 12; Through hole - 13; Injection hole - 14;

[0030] Horizontal rib plate - 21; Vertical rib plate - 22; Overflow hole - 23;

[0031] Sleeve shaft - 81; Card slot - 82; Pin hole - 83; Pin shaft - 84. Detailed implementation manners

[0032] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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. "First", "second", etc. do not represent the importance of the components, so it cannot be understood as a limitation to the present utility model. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example and do not limit the protection scope of the present utility model.

[0034] As Figures 1-5 shown, a multi-layer stacked body counterweight structure for a crawler crane includes a metal shell 1. Inside the metal shell 1, there is a support grid 2, which divides the inner cavity of the metal shell 1 into multiple cells 3. In each cell 3 inside the metal shell 1, counterweight fillers are filled. At the top of the support grid 2, a first lifting lug 4 and a second lifting lug 5 are fixedly connected, and the first lifting lug 4 and the second lifting lug 5 extend out of the top of the metal shell 1, facilitating being used as lifting lugs to hoist and tow the counterweight structure. A seamless steel pipe 6 is arranged directly below the first lifting lug 4 and the second lifting lug 5. The seamless steel pipe 6 is welded to the support grid 2, and the bottom end of the seamless steel pipe 6 penetrates through the bottom wall of the metal shell 1 and remains in an open state. A sealing plate 7 is welded to the top end of the seamless steel pipe 6;

[0035] Based on the existing filled counterweight blocks, the structural form is optimized, greatly reducing the usage of sheet materials, the proportion of sheets, and the cost;

[0036] Both the first lifting lug 4 and the second lifting lug 5 can be detachably sleeved with a limiting member 8, and the limiting member 8 matches the inner diameter of the seamless steel pipe 6, which can reduce the wear of the first lifting lug 4 and the second lifting lug 5, extend the service life of the device, and the cooperation between the limiting member 8 and the seamless steel pipe 6 has a larger contact area, stronger stability after docking, greater connection strength, and relatively reliable safety;

[0037] To reduce the sheets required for internal reinforcement, the first lifting lug 4 and the second lifting lug 5 serving as lifting lugs and the seamless steel pipe 6 serving as a limiting hole are combined at the bearing part to achieve multiple functions with one component;

[0038] As an implementation manner of the support grid 2 in the present utility model:

[0039] The support grid 2 includes transverse rib plates 21 and longitudinal rib plates 22, which are welded in a cross shape. The first lifting lug 4 and the second lifting lug 5 are respectively located at the intersection parts of two transverse rib plates 21 and longitudinal rib plates 22, and the distances from the intersection points of the two transverse rib plates 21 and longitudinal rib plates 22 where the first lifting lug 4 and the second lifting lug 5 are located to the two side walls of the metal shell 1 are equal;

[0040] In this embodiment, a cross-interlocking structure is designed. At the limit hole, it is locked by the intersection of the transverse rib plate 21 and the longitudinal rib plate 22, greatly improving the load-bearing capacity of the limit hole and realizing precise cooperation with the limit plate. This multi-purpose in one position, function integration, and structure simplification can reduce the amount of sheet material used, reduce costs, and play a limiting role in two directions.

[0041] Overflow holes 23 penetrate through the surfaces of both the transverse rib plates 21 and the longitudinal rib plates 22, connecting adjacent two cells 3, facilitating concrete grouting; the counterweight filler is set as concrete. When filling the unfixed concrete, it is evenly distributed in each cell 3 through the overflow holes 23 to achieve homogeneous distribution, and the upper surface remains flat, so as to ensure uniform weight distribution after the concrete solidifies and avoid potential safety hazards caused by weight imbalance.

[0042] Specifically, the shaft holes of the first lifting lug 4 and the second lifting lug 5 are at the same horizontal height, and the two shaft holes are vertically arranged, facilitating the balance of the counterweight structure during hoisting. Both the first lifting lug 4 and the second lifting lug 5 are perpendicular to the upper surface of the metal shell 1, and in cooperation with the vertically distributed seamless steel pipe 6, it limits the upper and lower counterweight structures when stacked, ensuring the connection strength and use stability of the multi-layer stacked structure.

[0043] As an implementation manner of the limiting member 8 in the present utility model:

[0044] The limiting member 8 includes a sleeve shaft 81. The outer diameter of the sleeve shaft 81 matches the inner diameter of the seamless steel pipe 6, and a clamping groove 82 matching the first lifting lug 4 or the second lifting lug 5 penetrates axially through the sleeve shaft 81. A pin hole 83 matching the shaft hole penetrates through the outer peripheral surface of the sleeve shaft 81, and a pin shaft 84 is inserted into both the pin hole 83 and the shaft hole;

[0045] During use, the sleeve shaft 81 is sleeved outside the first lifting lug 4 or the second lifting lug 5 through the clamping groove 82. After the sleeving is completed, the pin hole 83 is aligned with the shaft hole position, and the pin shaft 84 is inserted to complete the installation, which is efficient and convenient, and the connection is firm and reliable after connection.

[0046] As an implementation manner of the metal shell 1 in the present utility model:

[0047] The metal housing 1 includes a material storage box 11 and an upper cover plate 12. The upper cover plate 12 is detachably installed at the top of the material storage box 11, such as being fixed by screws or connected by snap-fitting, so that after the inside of the metal housing 1 is filled with a counterweight filler, a sealed container is formed to protect the counterweight filler. Specifically, two through holes 13 are provided on the surface of the upper cover plate 12, and the outer diameters of the first lifting lug 4 and the second lifting lug 5 respectively match the sizes of the two through holes 13, facilitating the first lifting lug 4 and the second lifting lug 5 to pass through the through holes 13.

[0048] As another embodiment of the metal housing 1 in the present utility model:

[0049] The metal housing 1 is provided as an integral structure, and a filling hole 14 is provided on the upper surface of the metal housing 1 for injecting the counterweight filler and exhausting air. Specifically, both the first lifting lug 4 and the second lifting lug 5 are fixedly welded to the metal housing 1, improving the integration degree of the counterweight structure and ensuring the strength.

[0050] When the present utility model is in use, a hoisting device is connected to the first lifting lug 4 and the second lifting lug 5, and the counterweight structure is hoisted to the installation area reserved on the crawler crane, completing multiple transfer hoistings at one time. And a limiting member 8 is installed outside the first lifting lug 4 and the second lifting lug 5 to form an integral structure with the counterweight structure. The limiting member 8 is in interference fit with the bottom end of the seamless steel pipe 6, which is efficient and convenient, and the connection is firm and reliable. A new structural form is adopted to realize the multi-layer stacked body weight pressing. Subsequently, an external fixing mechanism is used to limit the multi-layer stacked body weight pressing. After use, it is stored and recycled.

[0051] The above has described in detail the embodiments of the present utility model in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A counterweight structure for pressing the multi-layer stacked body of a crawler crane, characterized in that: It includes a metal shell (1). Inside the metal shell (1), there is a support grid (2) which divides the inner cavity of the metal shell (1) into multiple cells (3). In each cell (3) within the metal shell (1), counterweight fillers are filled. At the top of the support grid (2), a first lifting lug (4) and a second lifting lug (5) are fixedly connected, and the first lifting lug (4) and the second lifting lug (5) extend out of the top of the metal shell (1). Below the first lifting lug (4) and the second lifting lug (5), there is a seamless steel pipe (6). The seamless steel pipe (6) is welded to the support grid (2), and the bottom end of the seamless steel pipe (6) penetrates through the bottom wall of the metal shell (1) and remains in an open state. A sealing plate (7) is welded to the top end of the seamless steel pipe (6). Removable sleeves (8) are sleeved outside the first lifting lug (4) and the second lifting lug (5), and the sleeves (8) are matched with the inner diameter of the seamless steel pipe (6).

2. The multi-layer stacked body counterweight structure for a crawler crane according to claim 1, wherein: The support grid (2) includes transverse rib plates (21) and longitudinal rib plates (22). The transverse rib plates (21) and the longitudinal rib plates (22) are welded in a cross shape. The first lifting lug (4) and the second lifting lug (5) are respectively located at the cross points of two transverse rib plates (21) and longitudinal rib plates (22), and the distances from the cross points of the two transverse rib plates (21) and longitudinal rib plates (22) where the first lifting lug (4) and the second lifting lug (5) are located to the two side walls of the metal shell (1) are equal.

3. The multi-layer stacked body counterweight structure for a crawler crane according to claim 2, characterized in that: Overflow holes (23) penetrate through the surfaces of the transverse rib plates (21) and the longitudinal rib plates (22) to communicate adjacent two cells (3).

4. A counterweight structure for multi-layer stacked body pressing of a crawler crane according to claim 1, characterized in that: The counterweight fillers are set as concrete, and the concrete is evenly distributed in each cell (3) through the overflow holes (23).

5. A counterweight structure for pressing a multi-layer stacked body of a crawler crane according to claim 1, characterized in that: The shaft holes of the first lifting lug (4) and the second lifting lug (5) are at the same horizontal height, and the two shaft holes are vertically arranged.

6. The multi-layer stacked body counterweight structure for a crawler crane according to claim 5, characterized in that: The sleeve (8) includes a sleeve shaft (81). The outer diameter of the sleeve shaft (81) is matched with the inner diameter of the seamless steel pipe (6), and a clamping groove (82) matching the first lifting lug (4) or the second lifting lug (5) penetrates axially through the sleeve shaft (81). A pin hole (83) matching the shaft hole penetrates through the outer peripheral surface of the sleeve shaft (81). A pin shaft (84) is inserted into both the pin hole (83) and the shaft hole together.

7. A counterweight structure for pressing a multi-layer stacked body of a crawler crane according to claim 1, characterized in that: The metal shell (1) includes a storage box (11) and an upper cover plate (12). The upper cover plate (12) is detachably installed at the top of the storage box (11) to form a sealed container after the inside of the metal shell (1) is filled with counterweight fillers.

8. A counterweight structure for multi-layer stacked body pressing of a crawler crane according to claim 7, characterized in that: Two through holes (13) are formed on the surface of the upper cover plate (12), and the two through holes (13) are respectively matched with the outer diameter sizes of the first lifting lug (4) and the second lifting lug (5).

9. The counterweight structure for pressing the multi-layer stacked body of a crawler crane according to claim 1, characterized in that: The metal shell (1) is set as an integral structure, and a feeding hole (14) is formed on the upper surface of the metal shell (1) for injecting counterweight fillers and exhausting air.

10. A counterweight structure for pressing a multi-layer stacked body of a crawler crane according to claim 9, characterized in that: Both the first lifting lug (4) and the second lifting lug (5) are fixedly welded to the metal shell (1).

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