High-strength crane boom for a single-beam crane

Abstract

The utility model discloses a high strength hoisting arm for single beam crane relates to crane technical field, include: chassis, support single beam, hoisting top arm, cylinder, boom, support single beam installation on the chassis, hoisting top arm sets up on the support single beam, cylinder both sides are respectively with support single beam, hoisting top arm rotation connection, the telescopic insertion of boom is in hoisting top arm one side, the utility model discloses in order to keep the balance of hoisting top arm and boom, through motor drive screw rotation, nut cover is along with the connecting plate mobile with the insertion slot, is along with the mobile plate mobile, thereby the position of cylinder top under hoisting top arm changes, can move close to the midpoint position of hoisting top arm and boom, make it more balanced, increase its support strength, and then when hoisting the heavy object can to hoisting top arm sustained effective support, make the hoisting work more stable, smooth, the security improves.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and more specifically to a high-strength lifting arm for a single-girder crane. Background Technology

[0002] The main beam and crossbeam of a single-girder crane are usually connected by a side-fixed connection. It is a small and lightweight lifting device. The load is hung on the hook and lifted by a cylinder to lift the crossbeam. It is relatively simple and widely used.

[0003] In existing single-girder cranes, the boom and cylinder are usually only rotatably connected, and the position of the boom lifted by the cylinder is difficult to move or change. However, the boom often needs to be adjusted in length on the crossbeam to accommodate heavy objects at different distances. If the connection point between the cylinder and the boom is too far from the lifted object, the boom will not be balanced enough and the center of gravity will be unstable. This could cause the crane to shake or even tip over, which is extremely dangerous.

[0004] Based on the above background, a high-strength lifting boom for single-girder cranes is proposed to solve the problem. Utility Model Content

[0005] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a high-strength lifting arm for a single-girder crane.

[0007] To achieve the above objectives, the technical solution of this utility model is: a high-strength lifting boom for a single-girder crane, comprising: a base frame, a supporting single beam, a lifting top boom, a cylinder, and a jib. The supporting single beam is mounted on the base frame; the lifting top boom is mounted on the supporting single beam; the cylinder is rotatably connected to the supporting single beam and the lifting top boom on both sides respectively; the jib is telescopically inserted into one side of the lifting top boom; wherein, the lifting top boom includes a protective shell, a motor, a screw, a nut sleeve, a connecting plate, a moving plate, and a slot. The motor is mounted on the side of the protective shell, the screw is inserted into the protective shell and is connected to the motor for transmission, the nut sleeve is threaded onto the screw, the slot is opened on the lower side of the protective shell, one side of the connecting plate is connected to the nut sleeve, and the other side passes through the slot and is connected to the moving plate, and the upper side of the cylinder is rotatably connected to the moving plate.

[0008] Preferably, the boom is telescopically inserted into one side of the protective shell.

[0009] Preferably, a baffle is installed inside the protective housing and located on one side of the boom.

[0010] Preferably, a bearing is provided on the baffle, and the side of the screw is connected to the bearing.

[0011] Preferably, casters are installed on the underside of the base frame.

[0012] Preferably, a rope-threading frame is installed on the side of the base frame.

[0013] Preferably, tie rods are provided on both sides of the middle section of the supporting single beam.

[0014] Preferably, the pull rod is fitted with a rubber sleeve.

[0015] Preferably, the rubber sleeve is provided with anti-slip texture.

[0016] The beneficial effects of this utility model are as follows: In order to maintain the balance between the lifting boom and the jib, the screw is driven by a motor to rotate, and the nut sleeve moves along the slot with the connecting plate, which in turn moves the moving plate. As a result, the position of the cylinder top under the lifting boom changes, allowing it to move closer to the midpoint between the lifting boom and the jib, making it more balanced and increasing its support strength. This allows for continuous and effective support of the lifting boom when lifting heavy objects, making the lifting operation more stable, smooth, and safer. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a high-strength lifting boom for a single-girder crane according to the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the lifting boom of this utility model;

[0019] Figure 3 This is a bottom-view three-dimensional structural diagram of the lifting boom of this utility model;

[0020] Figure 4 This utility model Figure 1 A partially enlarged structural diagram of A in the diagram.

[0021] Attached reference numerals: Base frame-1, Support beam-2, Lifting boom-3, Cylinder-4, Hoist-5, Moving wheel-6, Rope frame-7, Tie rod-8, Rubber sleeve-9, Protective shell-31, Motor-32, Screw-33, Nut sleeve-34, Connecting plate-35, Moving plate-36, Slot-37, Baffle-38, Bearing-39. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-4 This utility model provides a high-strength lifting boom for a single-girder crane, comprising: a base frame 1, a supporting single beam 2, a lifting top boom 3, a cylinder 4, and a boom 5. The supporting single beam 2 is mounted on the base frame 1; the lifting top boom 3 is mounted on the supporting single beam 2; the cylinder 4 is rotatably connected to the supporting single beam 2 and the lifting top boom 3 on both sides respectively; the boom 5 is telescopically inserted into one side of the lifting top boom 3; wherein, the lifting top boom 3 includes a protective shell 31, a motor 32, a screw 33, a nut sleeve 34, a connecting plate 35, a moving plate 36, and a slot 37. The motor 32 is mounted on the side of the protective shell 31, the screw 33 is fitted into the protective shell 31 and is connected to the motor 32 for transmission, the nut sleeve 34 is threadedly connected to the screw 33, the slot 37 is opened on the lower side of the protective shell 31, one side of the connecting plate 35 is connected to the nut sleeve 34, and the other side passes through the slot 37 and is connected to the moving plate 36, and the upper side of the cylinder 4 is rotatably connected to the moving plate 36.

[0025] When in use, the lifting boom 3 is installed on the supporting single beam 2, and the hook is connected to the heavy object. The cylinder 4 drives the lifting boom 3 to lift, and the boom 5 lifts and hoists the heavy object. When the boom 5 extends a long distance beyond the lifting boom 3, in order to maintain the balance between the lifting boom 3 and the boom 5, the motor 32 works, and the screw 33 rotates mechanically. Under the limit of the connecting plate 35 and the slot 37, the nut sleeve 34 will not rotate with it, but will move along the slot 37 with the connecting plate 35 on the screw 33, and thus move the moving plate 36. As a result, the position of the cylinder 4 under the lifting boom 3 changes, and it can move closer to the midpoint between the lifting boom 3 and the boom 5, making it more balanced and increasing the support strength.

[0026] According to some embodiments of this application, optionally, the boom 5 is telescopically inserted into one side of the protective housing 31. This serves to telescopically mount the boom 5 to the side of the lifting boom 3.

[0027] According to some embodiments of this application, optionally, a baffle 38 is installed inside the protective housing 31 and located on one side of the boom 5. This serves to prevent the boom 5 from colliding with the screw 33 during extension or retraction.

[0028] According to some embodiments of this application, optionally, a bearing 39 is provided on the baffle 38, and the side of the screw 33 is connected to the bearing 39. This has the effect of making the screw 33 rotate more smoothly and less prone to shaking.

[0029] According to some embodiments of this application, optionally, casters 6 are installed on the underside of the base frame 1. This facilitates the movement of the crane.

[0030] According to some embodiments of this application, optionally, a rope-threading frame 7 is installed on the side of the base frame 1. In order to facilitate pulling the crane, the crane can be moved by pulling the rope through the rope-threading frame 7, making the movement more convenient and less labor-intensive.

[0031] According to some embodiments of this application, optionally, tie rods 8 are provided on both sides of the middle portion of the supporting single beam 2. This facilitates manual gripping of the tie rods 8, allowing the crane to be pulled a short distance.

[0032] According to some embodiments of this application, optionally, a rubber sleeve 9 is fitted onto the pull rod 8. This serves to prevent the handle from being pinched.

[0033] According to some embodiments of this application, optionally, the rubber sleeve 9 is provided with anti-slip texture. This serves to prevent slippage and detachment.

[0034] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0035] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0036] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A high-strength lifting boom for a single-girder crane, characterized in that, include: Base frame (1); Supporting single beam (2), which is mounted on base frame (1); The lifting boom (3) is mounted on the supporting single beam (2); The cylinder (4) is rotatably connected to the supporting single beam (2) and the lifting top arm (3) on both sides respectively; The boom (5) is telescopically connected to one side of the lifting top boom (3); among which, The lifting boom (3) includes a protective shell (31), a motor (32), a screw (33), a nut sleeve (34), a connecting plate (35), a moving plate (36), and a slot (37). The motor (32) is installed on the side of the protective shell (31). The screw (33) is fitted into the protective shell (31) and is connected to the motor (32) for transmission. The nut sleeve (34) is threaded onto the screw (33). The slot (37) is opened on the lower side of the protective shell (31). One side of the connecting plate (35) is connected to the nut sleeve (34), and the other side passes through the slot (37) and is connected to the moving plate (36). The upper side of the cylinder (4) is rotatably connected to the moving plate (36).

2. The high-strength lifting boom for a single-girder crane according to claim 1, characterized in that, The boom (5) can be extended and inserted into one side of the protective shell (31).

3. The high-strength lifting boom for a single-girder crane according to claim 1, characterized in that, A baffle (38) is installed inside the protective shell (31) and is located on one side of the boom (5).

4. A high-strength lifting boom for a single-girder crane according to claim 3, characterized in that, A bearing (39) is provided on the baffle (38), and the side of the screw (33) is connected to the bearing (39).

5. A high-strength lifting boom for a single-girder crane according to claim 1, characterized in that, The base frame (1) is equipped with casters (6) on its underside.

6. A high-strength lifting boom for a single-girder crane according to claim 1, characterized in that, The base frame (1) is equipped with a rope-threading frame (7) on the side.

7. A high-strength lifting boom for a single-girder crane according to claim 1, characterized in that, Tie rods (8) are provided on both sides of the middle part of the supporting single beam (2).

8. A high-strength lifting boom for a single-girder crane according to claim 7, characterized in that, A rubber sleeve (9) is fitted on the pull rod (8).

9. A high-strength lifting boom for a single-girder crane according to claim 8, characterized in that, The rubber sleeve (9) is provided with anti-slip texture.

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