An anti-tipping crane with a center-of-gravity adjustment function

Abstract

The present invention discloses an anti-tipping crane with a center-of-gravity adjustment function, which relates to the technical field of cranes; in order to adjust the center of gravity of the crane during hoisting; it includes a crane main body and a center-of-gravity adjustment component. A boom component is arranged on the upper surface of the crane main body, and a receiving frame is fixed to the inner wall of the bottom of the crane main body. A rotating block is movably connected to the through hole formed on the surface of the receiving frame by means of a bearing, and the rotating block and the boom component are movably connected by means of a hydraulic cylinder; the center-of-gravity adjustment component includes: a fixing plate: which is fixed to the top of the crane main body, and an adjustment column is movably connected to the inner wall of the fixing plate. By linking the center-of-gravity adjustment of the entire crane with the angle adjustment of the boom main body, the present invention enables the center-of-gravity adjustment component to automatically adjust the center of gravity of the entire crane while the hoisting height and position of the boom main body change, so as to adjust the center of gravity of the crane in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to an anti-tipping crane with a center of gravity adjustment function. Background Art

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. Cranes can be divided into crawler type, fixed type, and tire type according to their structures. Among them, a crawler crane is a boom rotating crane that uses crawlers to move, and has the advantages of a relatively large grounding area and good lifting effect. When a crawler crane is working, the boom needs to lift heavy objects. Due to the influence of the weight of the heavy objects, the balance of the entire crawler crane will change, so the entire crawler crane is prone to the danger of tipping. Therefore, it is necessary to install corresponding counterweights at the rear of the main body of the crawler crane, and use the counterweights to balance with the heavy objects to ensure the balance of the crawler crane;

[0003] However, in the actual operation process, the boom needs to rotate continuously to move the heavy object to the designated location. During the rotation of the boom, the horizontal distance between the heavy object and the crawler crane will also change, so the center of gravity of the entire crawler crane will also change accordingly. Therefore, even if a counterweight is installed at the rear of the crawler crane, the entire crawler crane may still have the danger of tipping because the center of gravity cannot be concentrated at the center of the crane. Therefore, it is necessary to design a crawler crane that can adjust the position of the center of gravity of the entire crane while the rotation angle of the boom changes during its operation, so as to ensure the balance of the crawler crane during operation and avoid tipping. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose an anti-tipping crane with a center of gravity adjustment function.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An anti-tipping crane with a center of gravity adjustment function, including a crane main body and a center of gravity adjustment component. A boom component is arranged on the upper surface of the crane main body. A receiving frame is fixed to the inner wall of the bottom of the crane main body. A rotating block is movably connected to the through hole opened on the surface of the receiving frame by a bearing. The rotating block and the boom component are movably connected by a hydraulic cylinder;

[0007] The center of gravity adjustment component includes:

[0008] A fixing plate: which is fixed to the top of the crane main body. An adjusting column is movably connected to the inner wall of the fixing plate. The adjusting column is connected to the rotating block through a transmission part;

[0009] The lever is welded to one end of the adjusting column, and a T-shaped rod 2 is welded on the surface of the lever;

[0010] Bend pipe: It is welded to the top of the crane body, and a limit slide is welded on one end of the bend pipe;

[0011] Sliding plate 1: movably connected to the outer wall of the limiting sliding plate;

[0012] Horizontal plate: It is welded to the outer wall of one side of the sliding plate through an arc frame 2, and a counterweight is arranged at one end of the horizontal plate.

[0013] Preferably: the boom assembly comprises:

[0014] Mounting plates: Two mounting plates are fixed to the outer wall of the top of the crane body, and the inner walls of the two mounting plates are movably connected to the boom body through a rotating shaft;

[0015] Bracket: It is welded to the surface of the boom body, the output end of the hydraulic cylinder is movably connected to the inner wall of the bracket, and the other end of the hydraulic cylinder is fixed to the surface of the rotating block.

[0016] Preferably, the transmission part comprises:

[0017] Rectangular plate: It is welded to the upper surface of the crane body, and the inner wall of the rectangular plate is movably connected with a connecting column, one end of which is connected to one end of the rotating block through a coupling;

[0018] Pulley: The two pulleys are fixed to one end of the connecting column and one end of the adjusting column respectively by self-tapping screws, and the two pulleys are connected by a belt for transmission.

[0019] As a preferred embodiment of the present invention: the counterweight portion includes:

[0020] Limiting cylinder: It is welded to the outer wall of one side of the horizontal plate, and the inner wall of the circumference of the limiting cylinder is movably connected with a rotating shaft, and the outer wall of the circumference of the rotating shaft is welded with a limiting ball;

[0021] Connecting rod: One end of the connecting rod is welded to the outer wall of the limiting ball, and the other end is welded with a universal ball;

[0022] Adjustment cylinder: It is movably connected to the outer wall of the spherical surface of the universal ball, and a counterweight block is welded at the bottom of the adjustment cylinder.

[0023] As a preferred embodiment of the present invention: a T-shaped rod 1 is welded on the surface of the lever, a sliding plate 2 is movably connected to the outer wall of the limiting slide plate, and an inclined plate is welded to the outer wall of one side of the sliding plate 2 by using an arc frame 1.

[0024] As a preferred embodiment of the present invention: a pad is welded on the circumferential outer wall of the connecting rod, a U-shaped frame is welded on the bottom of the pad, and a roller is movably connected to the inner wall of the U-shaped frame.

[0025] Further: a cab is provided on the upper surface of the crane body.

[0026] As a further solution of the present invention: a traveling mechanism is movably connected to the lower surface of the crane body.

[0027] As a further solution of the present invention: a first sliding hole adapted to the second T-shaped rod is provided on one surface of the sliding plate.

[0028] As a further solution of the present invention: a second sliding hole adapted to the second T-shaped rod is provided on one surface of the second sliding plate.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. By generating a linkage between the center of gravity adjustment of the entire crane and the angle adjustment of the boom body, when the hoisting height and position of the boom body change, the center of gravity adjustment component can automatically adjust the center of gravity of the entire crane, so that the center of gravity of the crane can be adjusted in real time.

[0031] 2. By providing a transmission part, after the boom body has a tendency to tilt forward, the counterweight part can move backward, so as to ensure the stability of the crane during hoisting and avoid the crane from tipping over.

[0032] 3. By providing an inclined plate, the counterweight part can also move obliquely downward during the backward movement, so as to adjust the height of the counterweight part, so that during the center of gravity adjustment, the counterweight part can be closer to the ground, thereby further improving the stability of the entire crane.

[0033] 4. The boom assembly can be used to lift heavy objects. By connecting the rotating block and the boom assembly with a hydraulic cylinder, by controlling the telescopic amount of the output end of the hydraulic cylinder, the rotation amplitude of the boom assembly can be adjusted, so that the boom assembly can better move the heavy object to the loading and unloading location.

[0034] 5. The entire crane can be controlled by using the cab, and the entire crane can be moved by using the traveling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is an overall structural schematic diagram of an anti-tipping crane with a center of gravity adjustment function proposed by the present invention;

[0036] Figure 2 is a rear structural schematic diagram of an anti-tipping crane with a center of gravity adjustment function proposed by the present invention;

[0037] Figure 3It is a schematic diagram of the main body and boom structure of an anti-tipping crane with a center-of-gravity adjustment function proposed by the present invention;

[0038] Figure 4 It is a schematic diagram of the overall structure of the center-of-gravity adjustment component of an anti-tipping crane with a center-of-gravity adjustment function proposed by the present invention;

[0039] Figure 5 It is a schematic diagram of a partial structure of the center-of-gravity adjustment component of an anti-tipping crane with a center-of-gravity adjustment function proposed by the present invention;

[0040] Figure 6 It is a schematic diagram of the explosion structure of the center-of-gravity adjustment component of an anti-tipping crane with a center-of-gravity adjustment function proposed by the present invention in the first direction;

[0041] Figure 7 It is a schematic diagram of the explosion structure of the center-of-gravity adjustment component of an anti-tipping crane with a center-of-gravity adjustment function proposed by the present invention in the second direction.

[0042] In the figure: 1 - crane main body, 2 - boom main body, 3 - traveling mechanism, 4 - cab, 5 - bracket, 6 - hydraulic cylinder, 7 - limit slide plate, 8 - counterweight, 9 - belt, 10 - accommodating frame, 11 - mounting plate, 12 - connecting column, 13 - rectangular plate, 14 - first arc-shaped frame, 15 - fixing plate, 16 - cross plate, 17 - elbow pipe, 18 - pulley, 19 - rotating block, 20 - first sliding plate, 21 - adjusting column, 22 - rotating shaft, 23 - inclined plate, 24 - connecting rod, 25 - cushion plate, 26 - limit ball, 27 - limit cylinder, 28 - second sliding plate, 29 - universal ball, 30 - U-shaped frame, 31 - first T-shaped rod, 32 - second T-shaped rod, 33 - second arc-shaped frame, 34 - roller, 35 - adjusting cylinder, 36 - lever. Detailed implementation manners

[0043] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0044] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0045] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing this patent and simplifying the description, rather than limiting that the indicated devices, structures or elements must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this patent.

[0046] In the description of this patent, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "joined", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0047] Embodiment 1:

[0048] An anti-tipping crane with a center of gravity adjustment function, as Figures 1-7 shown, includes a crane main body 1 and a center of gravity adjustment assembly. A boom assembly is provided on the upper surface of the crane main body 1. A receiving frame 10 is fixed to the inner wall of the bottom of the crane main body 1 by bolts. A rotating block 19 is rotatably connected to the through hole opened on the surface of the receiving frame 10 by a bearing. A hydraulic cylinder 6 is used to rotatably connect the rotating block 19 and the boom assembly;

[0049] The center of gravity adjustment assembly includes:

[0050] A fixing plate 15: It is fixed to the top of the crane main body 1 by bolts. An adjusting column 21 is rotatably connected to the inner wall of the fixing plate 15. The adjusting column 21 is connected to the rotating block 19 through a transmission part;

[0051] A lever 36: It is welded to one end of the adjusting column 21. A second T-shaped rod 32 is welded to the surface of the lever 36;

[0052] A bent pipe 17: It is welded to the top of the crane main body 1. A limiting sliding plate 7 is welded to one end of the bent pipe 17;

[0053] A first sliding plate 20: It is slidably connected to the outer wall of the limiting sliding plate 7, and a first sliding hole adapted to the second T-shaped rod 32 is opened on the surface of the first sliding plate 20;

[0054] A cross plate 16: It is welded to the outer wall of one side of the first sliding plate 20 through an arc-shaped frame two 33. A counterweight part is provided at one end of the cross plate 16;

[0055] The boom assembly can be used to lift heavy objects. By connecting the rotating block 19 and the boom assembly with a hydraulic cylinder 6, the rotation range of the boom assembly can be adjusted by controlling the extension and contraction amount of the output end of the hydraulic cylinder 6, so that the boom assembly can better move the heavy objects to the loading and unloading location;

[0056] When the extension amount of the output end of the hydraulic cylinder 6 is changed, the two ends of the rotating block 19 rotate along the through holes opened on the surface of the accommodating frame 10, so that the adjusting column 21 rotates synchronously under the transmission action of the transmission part, and the toggle action of the toggle rod 36 allows the T-shaped rod 2 32 to move along the sliding hole on the surface of the sliding plate 1 20 while pushing the sliding plate 1 20 along the surface of the limiting slide plate 7, so that the counterweight part can move synchronously with the sliding plate 1 20;

[0057] In summary, the displacement of the counterweight part and the rotation of the boom assembly are interrelated, that is, when the boom assembly lowers the weight, the boom assembly gradually rotates toward the ground, so that the center of gravity of the entire crane is moved forward and has a tendency to lean forward. During this process, the counterweight part will synchronously move toward the rear of the crane body 1. The counterweight part can be used to effectively move the center of gravity of the entire crane toward the middle position of the crane, thereby preventing the crane from tipping over. The greater the tendency of the boom assembly to lean forward, the farther the counterweight part moves backward, so that the center of gravity of the entire crane can be adjusted in real time.

[0058] In order to lift heavy objects; Figures 1-4 As shown, the boom assembly includes:

[0059] Mounting plates 11: two mounting plates 11 are fixed to the top outer wall of the crane body 1 by bolts, and the inner walls of the two mounting plates 11 are rotatably connected to the boom body 2 by a rotating shaft;

[0060] Bracket 5: It is welded to the surface of the boom body 2, the output end of the hydraulic cylinder 6 is rotatably connected to the inner wall of the bracket 5, and the other end of the hydraulic cylinder 6 is fixed to the surface of the rotating block 19 by bolts;

[0061] The hydraulic cylinder 6 can be used to adjust the rotation angle and amplitude of the boom body 2. The crane body 1 is provided with a winch and a wire rope, and a hook is connected to one end of the wire rope, so that heavy objects can be hoisted. The hoisting of the crane belongs to the existing technology, so this embodiment will not be elaborated in detail.

[0062] In order to achieve transmission; Figures 1-4 As shown, the transmission part includes:

[0063] Rectangular plate 13: It is welded to the upper surface of the crane body 1, and the inner wall of the rectangular plate 13 is rotatably connected with a connecting column 12, and one end of the connecting column 12 is connected to one end of the rotating block 19 through a coupling;

[0064] Pulley 18: Two pulleys 18 are fixed to one end of the connecting column 12 and one end of the adjusting column 21 respectively by self-tapping screws, and the two pulleys 18 are connected by a belt 9 for transmission;

[0065] The transmission part can be used to synchronously realize the rotation of the connecting column 12 and the adjusting column 21.

[0066] In order to counterweight the crane; Figures 5-7 As shown, the counterweight portion includes:

[0067] The limiting cylinder 27 is welded to the outer wall of one side of the horizontal plate 16. The inner wall of the limiting cylinder 27 is rotatably connected to the rotating shaft 22. The outer wall of the rotating shaft 22 is welded with a limiting ball 26.

[0068] Connecting rod 24: One end of the connecting rod 24 is welded to the outer wall of the spherical surface of the limiting ball 26, and the other end thereof is welded to the universal ball 29;

[0069] Adjustment cylinder 35: It is rotatably connected to the outer wall of the spherical surface of the universal ball 29, and a counterweight block 8 is welded to the bottom of the adjustment cylinder 35;

[0070] The counterweight block 8 can be provided to counterweight the rear portion of the crane body 1, thereby effectively adjusting the center of gravity of the entire crane when the boom assembly is hoisting heavy objects.

[0071] In order to facilitate the operation of the crane; Figures 1-2 As shown, a cab 4 is provided on the upper surface of the crane body 1, and a walking mechanism 3 is rotatably connected to the lower surface of the crane body 1;

[0072] The entire crane can be controlled by using the cab 4, and the entire crane can be moved by using the traveling mechanism 3, wherein the traveling mechanism 3 is a crawler type.

[0073] When this embodiment is in use, the cab 4 is used to control the entire crane, the walking mechanism 3 controls the crane body 1 to move to the lifting location, and then controls the boom assembly to lift the heavy object. During the lifting process of the boom assembly, the boom body 2 uses the hydraulic cylinder 6 to adjust the angle, so as to lift the heavy object to the specified position. When the boom body 2 rotates toward the ground along the mounting plate 11, the whole crane will tend to tilt forward under the pressure of the heavy object. In this process, the counterweight part will gradually move outward along the rear of the crane body 1 through the linkage action, so as to adjust the center of gravity of the whole crane, thereby ensuring the balance of the whole crane and preventing the crane from tipping over during lifting.

[0074] Embodiment 2:

[0075] An anti-dumping crane with a center of gravity adjustment function, such as Figures 4-7 As shown, in order to further improve the stability of the crane, this embodiment makes the following supplements on the basis of embodiment 1: a T-shaped rod 31 is welded on the surface of the lever 36, a sliding plate 28 is slidably connected to the outer wall of the limiting slide plate 7, a sliding hole 2 that is adapted to the T-shaped rod 32 is opened on the surface of the sliding plate 28, an inclined plate 23 is welded to the outer wall of one side of the sliding plate 28 by using an arc frame 14, a pad 25 is welded to the outer wall of the circumference of the connecting rod 24, a U-shaped frame 30 is welded to the bottom of the pad 25, and a roller 34 is rotatably connected to the inner wall of the U-shaped frame 30;

[0076] By moving the lever 36, the sliding plate 1 20 and the sliding plate 2 28 can move in opposite directions, so that when the counterweight part moves backward, the inclined plate 23 moves forward. The surface of the inclined plate 23 is an inclined surface, so that when the roller 34 rolls along the inclined surface of the inclined plate 23, the limiting ball 26 can be used to move the counterweight block 8 backward and also move downward along the inclined surface of the inclined plate 23 at the same time. As the height of the counterweight block 8 continues to decrease, the height of the entire configuration part can be further reduced, so that when the boom assembly is lifting heavy objects, the center of gravity of the entire crane can be more balanced, thereby further ensuring the stability of the crane.

[0077] When this embodiment is in use, the lever 36 is used to move the counterweight portion downward along the surface of the inclined plate 23 while moving backward, so that the height of the entire counterweight portion is gradually reduced, thereby making the center of gravity of the entire configuration machine more balanced.

[0078] The above is a preferred specific embodiment of the present invention, but it is not the only specific embodiment of the present invention. Any modification, equivalent substitution and improvement made by any technician familiar with the field within the technical scope disclosed by the present invention in combination with the existing technology or public common sense within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. An anti-tipping crane with a center of gravity adjustment function, comprising a crane body (1) and a center of gravity adjustment component, characterized in that, On the upper surface of the crane main body (1), a boom assembly is provided. Inside the bottom wall of the crane main body (1), a receiving frame (10) is fixed. A through hole formed on the surface of the receiving frame (10) is movably connected with a rotating block (19) by means of a bearing. Between the rotating block (19) and the boom assembly, a hydraulic cylinder (6) is used for movable connection; The center of gravity adjustment assembly includes: A fixed plate (15): It is fixed to the top of the crane main body (1). Inside the fixed plate (15), an adjustment column (21) is movably connected. The adjustment column (21) is connected to the rotating block (19) through a transmission part; A shift lever (36): It is welded to one end of the adjustment column (21). On the surface of the shift lever (36), a second T-shaped rod (32) is welded; A bent pipe (17): It is welded to the top of the crane main body (1). At one end of the bent pipe (17), a limit sliding plate (7) is welded; A first sliding plate (20): It is movably connected to the outer wall of the limit sliding plate (7); A cross plate (16): It is welded to the outer wall of one side of the first sliding plate (20) through a second arc-shaped frame (33). At one end of the cross plate (16), a counterweight part is provided; The transmission part includes: A rectangular plate (13): It is welded to the upper surface of the crane main body (1). Inside the rectangular plate (13), a connecting column (12) is movably connected. One end of the connecting column (12) is connected to one end of the rotating block (19) through a coupling; Pulley wheels (18): Two pulley wheels (18) are respectively fixed to one end of the connecting column (12) and one end of the adjustment column (21) by self-tapping screws. Between the two pulley wheels (18), a belt (9) is used for transmission connection; The counterweight part includes: A limit cylinder (27): It is welded to the outer wall of one side of the cross plate (16). Inside the circumferential inner wall of the limit cylinder (27), a rotating shaft (22) is movably connected. On the circumferential outer wall of the rotating shaft (22), a limit ball (26) is welded; A connecting rod (24): One end of the connecting rod (24) is welded to the spherical outer wall of the limit ball (26), and the other end thereof is welded with a universal ball (29); An adjustment cylinder (35): It is movably connected to the spherical outer wall of the universal ball (29). At the bottom of the adjustment cylinder (35), a counterweight block (8) is welded; On the surface of the shift lever (36), a first T-shaped rod (31) is welded. On the outer wall of the limit sliding plate (7), a second sliding plate (28) is movably connected. On the outer wall of one side of the second sliding plate (28), an inclined plate (23) is welded through a first arc-shaped frame (14); On the circumferential outer wall of the connecting rod (24), a backing plate (25) is welded. At the bottom of the backing plate (25), a U-shaped frame (30) is welded. Inside the inner wall of the U-shaped frame (30), a roller (34) is movably connected.

2. The anti-tipping crane with a center-of-gravity adjustment function according to claim 1, characterized in that, The boom assembly includes: Mounting plates (11): Two mounting plates (11) are fixed to the outer wall of the top of the crane main body (1). Inside the two mounting plates (11), a boom main body (2) is movably connected through a rotating shaft; A bracket (5): It is welded to the surface of the boom main body (2). The output end of the hydraulic cylinder (6) is movably connected to the inner wall of the bracket (5), and the other end of the hydraulic cylinder (6) is fixed to the surface of the rotating block (19).

3. The anti-tipping crane with a center of gravity adjustment function according to claim 2, characterized in that, On the upper surface of the crane main body (1), a cab (4) is provided.

4. A tipping-proof crane with a center-of-gravity adjustment function according to claim 3, characterized in that, The lower surface of the crane main body (1) is movably connected with a traveling mechanism (3).

5. The anti-tipping crane with a center-of-gravity adjustment function according to claim 4, characterized in that, A first sliding hole adapted to the second T-shaped rod (32) is formed in the surface of the first sliding plate (20).

6. The anti-tipping crane with a center of gravity adjustment function according to claim 5, characterized in that, A second sliding hole adapted to the second T-shaped rod (32) is formed in the surface of the second sliding plate (28).

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