Anti-toppling crane with gravity center adjusting function

Abstract

The invention discloses an anti-toppling crane with a gravity center adjusting function, and relates to the technical field of cranes. The gravity center of the crane can be adjusted when the crane hoists. Comprising a crane body and a gravity center adjusting assembly, a movable arm assembly is arranged on the upper surface of the crane body, a containing frame is fixed to the inner wall of the bottom of the crane body, a through hole formed in the surface of the containing frame is movably connected with a rotating block through a bearing, and the rotating block and the movable arm assembly are movably connected through a hydraulic cylinder; the gravity center adjusting assembly comprises a fixing plate fixed to the top of the crane body, and an adjusting column is movably connected to the inner wall of the fixing plate. Linkage is generated between gravity center adjustment of the whole crane and angle adjustment of the movable arm body, so that the gravity center adjustment assembly can automatically adjust the gravity center of the whole crane while the hoisting height and position of the movable arm body are changed, and the gravity center of the crane can be adjusted in real time.

Description

Technical Field

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

[0002] Crane refers to a multi-action lifting machinery that can lift and carry heavy objects vertically and horizontally within a certain range. Cranes can be divided into crawler type, fixed type and tire type according to their structures. Crawler crane is a boom rotating crane that uses crawler tracks to travel. It has the advantages of a large ground contact area and a good lifting effect. When the 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, making the entire crawler crane prone to tipping. Therefore, it is necessary to install a corresponding counterweight block at the rear of the main body of the crawler crane to balance the counterweight block and the heavy objects, thereby ensuring the balance of the crawler crane. However, in actual operation, the boom needs to be continuously rotated to move the weight to the designated location. During the rotation of the boom, the horizontal distance between the weight and the crawler crane will also change, causing the center of gravity of the entire crawler crane to change accordingly. Therefore, even if a counterweight is installed at the rear of the crawler crane, the entire crawler crane will still be in danger of tipping over 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 changing the rotation angle of the boom during its operation, thereby ensuring the balance of the crawler crane during operation and preventing it from tipping over. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an anti-dumping crane with a center of gravity adjustment function.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An anti-dumping crane with a center of gravity adjustment function comprises a crane body and a center of gravity adjustment assembly, wherein a boom assembly is arranged on the upper surface of the crane body, a receiving frame is fixed to the inner wall of the bottom of the crane body, a through hole on the surface of the receiving frame is movably connected with a rotating block by a bearing, and the rotating block and the boom assembly are movably connected by a hydraulic cylinder; The center of gravity adjustment component includes: Fixed plate: It is fixed on the top of the crane body, and the inner wall of the fixed plate is movably connected with an adjusting column, and the adjusting column is connected between the transmission part and the rotating block; 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; 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; Sliding plate 1: movably connected to the outer wall of the limiting sliding plate; 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.

[0005] Preferably: the boom assembly comprises: 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; 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.

[0006] Preferably, the transmission part comprises: 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; 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.

[0007] As a preferred embodiment of the present invention: the counterweight portion includes: 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; 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; 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.

[0008] 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.

[0009] 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.

[0010] Furthermore: a cab is arranged on the upper surface of the crane body.

[0011] As a further solution of the present invention: a walking mechanism is movably connected to the lower surface of the crane body.

[0012] As a further solution of the present invention: a sliding hole 1 which is matched with the T-shaped rod 2 is opened on the surface of the sliding plate 1.

[0013] As a further solution of the present invention: a second sliding hole matching with the second T-shaped rod is provided on the surface of the second sliding plate.

[0014] The beneficial effects of the present invention are: 1. By linking the center of gravity adjustment of the entire crane with the angle adjustment of the boom body, the center of gravity adjustment component can automatically adjust the center of gravity of the entire crane while the hoisting height and position of the boom body are changed, thereby adjusting the center of gravity of the crane in real time.

[0015] 2. By providing a transmission part, the counterweight part can move backward after the boom body tends to tilt forward, thereby ensuring the stability of the crane during hoisting and preventing the crane from tipping over.

[0016] 3. By providing an inclined plate, the counterweight part can also move obliquely downward during the backward movement, so that the height of the counterweight part can be adjusted. During the process of adjusting the center of gravity, the counterweight part can be closer to the ground, thereby further improving the stability of the entire crane.

[0017] 4. The boom assembly can be used to lift heavy objects. By connecting the rotating block and the boom assembly with a hydraulic cylinder, the extension and retraction amount of the output end of the hydraulic cylinder can be controlled, thereby adjusting the rotation amplitude of the boom assembly, so that the boom assembly can better move the heavy objects to the loading and unloading location.

[0018] 5. The entire crane can be controlled using the cab, and the entire crane can be moved using the walking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an anti-dumping crane with a center of gravity adjustment function proposed by the present invention; Figure 2 It is a schematic diagram of the back structure of an anti-dumping crane with a center of gravity adjustment function proposed by the present invention; Figure 3 It is a schematic diagram of the main body and boom structure of an anti-dumping crane with a center of gravity adjustment function proposed by the present invention; Figure 4 It is a schematic diagram of the overall structure of a gravity center adjustment component of an anti-dumping crane with a gravity center adjustment function proposed by the present invention; Figure 5 It is a partial structural schematic diagram of a gravity center adjustment component of an anti-dumping crane with a gravity center adjustment function proposed by the present invention; Figure 6 It is a schematic diagram of the exploded structure in the first direction of a gravity center adjustment component of an anti-dumping crane with a gravity center adjustment function proposed by the present invention; Figure 7 It is a schematic diagram of the exploded structure in the second direction of a gravity center adjustment component of an anti-dumping crane with a gravity center adjustment function proposed by the present invention.

[0020] In the figure: 1-crane body, 2-arm body, 3-travel mechanism, 4-cab, 5-bracket, 6-hydraulic cylinder, 7-limiting slide plate, 8-counterweight, 9-belt, 10-receiving frame, 11-mounting plate, 12-connecting column, 13-rectangular plate, 14-arc frame 1, 15-fixed plate, 16-cross plate, 17-bend pipe, 18-pulley, 19-rotating block, 20-sliding plate 1, 21-adjusting column, 22-rotating shaft, 23-oblique plate, 24-connecting rod, 25-pad, 26-limiting ball, 27-limiting cylinder, 28-sliding plate 2, 29-universal ball, 30-U-shaped frame, 31-T-bar 1, 32-T-bar 2, 33-arc frame 2, 34-roller, 35-adjusting cylinder, 36-shift lever. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not limit the referred device, structure or element to have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0024] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0025] Embodiment 1: An anti-dumping crane with a center of gravity adjustment function, such as Figure 1-7As shown, it includes a crane body 1 and a center of gravity adjustment assembly, a boom assembly is arranged on the upper surface of the crane body 1, a receiving frame 10 is fixed to the inner wall of the bottom of the crane body 1 by bolts, a through hole opened on the surface of the receiving frame 10 is rotatably connected to a rotating block 19 by a bearing, and the rotating block 19 and the boom assembly are rotatably connected by a hydraulic cylinder 6; The center of gravity adjustment component comprises: Fixed plate 15: It is fixed to the top of the crane body 1 by bolts. The inner wall of the fixed plate 15 is rotatably connected with an adjusting column 21, and the adjusting column 21 is connected between the transmission part and the rotating block 19; The lever 36 is welded to one end of the adjusting column 21, and a T-shaped rod 32 is welded on the surface of the lever 36; Bend pipe 17: It is welded to the top of the crane body 1, and one end of the bend pipe 17 is welded to a limiting slide plate 7; Sliding plate 1 20: It is slidably connected to the outer wall of the limiting slide plate 7, and a sliding hole 1 that matches the T-shaped rod 2 32 is opened on the surface of the sliding plate 1 20; Horizontal plate 16: It is welded to the outer wall of one side of sliding plate 1 20 through arc frame 2 33, and a counterweight is provided at one end of the horizontal plate 16; 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; 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; 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.

[0026] In order to lift heavy objects; Figure 1-4 As shown, the boom assembly includes: 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; 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; 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.

[0027] In order to achieve transmission; Figure 1-4 As shown, the transmission part includes: 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; 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; The transmission part can be used to synchronously rotate the connecting column 12 and the adjusting column 21 .

[0028] In order to counterweight the crane; Figure 5-7 As shown, the counterweight portion includes: 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. 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; 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; 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.

[0029] In order to facilitate the operation of the crane; Figure 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; 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.

[0030] 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.

[0031] Embodiment 2: An anti-dumping crane with a center of gravity adjustment function, such as Figure 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; 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.

[0032] 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.

[0033] 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-dumping crane with a center of gravity adjustment function, comprising a crane body (1) and a center of gravity adjustment component, characterized in that: A boom assembly is disposed on the upper surface of the crane body (1); a receiving frame (10) is fixed to the inner wall of the bottom of the crane body (1); a through hole provided on the surface of the receiving frame (10) is movably connected to a rotating block (19) by means of a bearing; and the rotating block (19) and the boom assembly are movably connected by means of a hydraulic cylinder (6); The center of gravity adjustment component comprises: A fixed plate (15): fixed to the top of the crane body (1), an adjusting column (21) is movably connected to the inner wall of the fixed plate (15), and the adjusting column (21) is connected to the rotating block (19) by a transmission part; A lever (36) is welded to one end of the adjusting column (21), and a second T-shaped rod (32) is welded to the surface of the lever (36); Bend pipe (17): It is welded to the top of the crane body (1), and a limiting slide plate (7) is welded to one end of the bend pipe (17); Sliding plate 1 (20): movably connected to the outer wall of the limiting sliding plate (7); A transverse plate (16) is welded to an outer wall of one side of the sliding plate (20) via an arc frame (2) and a counterweight is provided at one end of the transverse plate (16).

2. The anti-dumping crane with center of gravity adjustment function according to claim 1 is characterized in that: The boom assembly comprises: Mounting plates (11): two mounting plates (11) are fixed to the top outer wall of the crane body (1), and the inner walls of the two mounting plates (11) are movably connected to the boom body (2) via a rotating shaft; Bracket (5): It is welded to the surface of the boom 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-dumping crane with center of gravity adjustment function according to claim 2 is characterized in that: The transmission part comprises: A rectangular plate (13) is welded to the upper surface of the crane body (1), and a connecting column (12) is movably connected to the inner wall of the rectangular plate (13), and one end of the connecting column (12) is connected to one end of the rotating block (19) through a coupling; Pulley (18): The two pulleys (18) are respectively fixed to one end of the connecting column (12) and one end of the adjusting column (21) by self-tapping screws, and the two pulleys (18) are connected to each other by a belt (9).

4. The anti-dumping crane with center of gravity adjustment function according to claim 3 is characterized in that: The counterweight portion comprises: A limiting cylinder (27) is welded to the outer wall of one side of the horizontal plate (16). The inner circumferential wall of the limiting cylinder (27) is movably connected to a rotating shaft (22). The outer circumferential wall of the rotating shaft (22) is welded to a limiting ball (26). 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 a universal ball (29); The adjusting cylinder (35) is movably connected to the outer wall of the spherical surface of the universal ball (29), and a counterweight (8) is welded to the bottom of the adjusting cylinder (35).

5. The anti-dumping crane with center of gravity adjustment function according to claim 4 is characterized in that: A T-shaped rod (31) is welded to the surface of the shifting rod (36), a sliding plate (28) is movably connected to the outer wall of the limiting slide plate (7), and an inclined plate (23) is welded to the outer wall of one side of the sliding plate (28) using an arc frame (14).

6. The anti-dumping crane with center of gravity adjustment function according to claim 5 is characterized in that: A pad (25) is welded to the circumferential outer wall of the connecting rod (24), a U-shaped frame (30) is welded to the bottom of the pad (25), and a roller (34) is movably connected to the inner wall of the U-shaped frame (30).

7. The anti-dumping crane with center of gravity adjustment function according to claim 6 is characterized in that: A cab (4) is provided on the upper surface of the crane body (1).

8. The anti-dumping crane with center of gravity adjustment function according to claim 7 is characterized in that: The lower surface of the crane body (1) is movably connected to a walking mechanism (3).

9. The anti-dumping crane with center of gravity adjustment function according to claim 8, characterized in that: The surface of the sliding plate 1 (20) is provided with a sliding hole 1 which is adapted to fit the T-shaped rod 2 (32).

10. The anti-dumping crane with center of gravity adjustment function according to claim 9, characterized in that: The surface of the second sliding plate (28) is provided with a second sliding hole which is adapted to fit the second T-shaped rod (32).

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