Crane truss arm and crane thereof

Abstract

The utility model discloses a crane truss arm and a crane thereof, the truss arm comprises a guide rail and a guide piece arranged below the guide rail along the guide direction of the guide rail, the guide piece is matched with at least one centering arm in a guiding manner, and the centering arm is used for being connected with a lifting unit; at least one through hole is horizontally formed in the guiding piece in the direction perpendicular to the guiding direction of the guiding piece, the centering arm is provided with an inserting hole with the same height as the through hole, and by means of the arrangement mode, when the idler wheel of the crane needs to be maintained, the inserting hole can correspond to the through hole, then a rigid inserting rod sequentially penetrates through the through hole and the inserting hole, and therefore the idler wheel of the crane can be maintained. Therefore, the lifting unit can be fixed, then the rolling wheel is disassembled and maintained, the lifting unit does not need to be disassembled from the truss arm, maintenance is more convenient, and after the rolling wheel is maintained, only the inserting rod needs to be disassembled.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a crane truss arm and the crane thereof. Background Technology

[0002] A crane is a tool used for hoisting equipment and lifting heavy objects. It includes a truss arm and a lifting unit that is movably mounted on the truss arm. Among them, a swing-arm hoisting device is a type of crane, which includes a base, a truss arm that is rotatably mounted on the base, and a lifting unit that is movably mounted on the truss arm. The lifting unit has rollers that move on the truss arm.

[0003] When the rollers malfunction and need to be replaced or repaired, the current repair method requires disassembling the lifting unit from the rollers. After disassembling the lifting unit from the rollers, it needs to be removed from the truss arm. After replacing the rollers, the lifting unit is then connected to the rollers. This requires the lifting unit to be raised and lowered repeatedly, which is inconvenient for repairs. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems by providing a crane truss arm and a crane thereof.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a crane truss boom, including a guide rail and a guide member disposed below the guide rail along the guide direction of the guide rail, wherein the guide member is adapted to guide at least one centering arm, the centering arm being used to connect with a lifting unit; along the guide direction perpendicular to the guide member, at least one through hole is horizontally disposed on the guide member, and the centering arm is disposed with a plug-in hole at the same height as the through hole.

[0006] Furthermore, along the guiding direction of the guide member, there are two centering arms spaced apart, and the guide member is provided with multiple through holes spaced apart, the distance between two adjacent through holes being equal to the distance between the insertion holes on the two centering arms.

[0007] Furthermore, the centering arm includes two arm plates disposed on both sides of the guide member and a reinforcing plate connecting the two arm plates, and both arm plates are in sliding cooperation with the side of the guide member.

[0008] Furthermore, the centering arm is used for detachable and fixed connection with the lifting unit.

[0009] Furthermore, a connecting sleeve is integrally welded to the end of the truss arm.

[0010] Furthermore, this application also provides a crane including any of the above-described truss arms, and further includes a base, wherein the truss arm is rotatably disposed on the upper end of the base, and a lifting unit is movably disposed on the guide rail.

[0011] Furthermore, the lifting unit is provided with a roller frame, on which rollers are rotatably mounted, and the rollers are in rolling engagement with the upper surface of the guide rail.

[0012] The crane truss boom and crane disclosed in this utility model have the following advantages compared with the prior art: The truss boom includes a guide rail and a guide member disposed below the guide rail along the guide direction of the guide rail. The guide member is adapted to guide at least one centering arm, which is used to connect with the lifting unit. Along the guide direction perpendicular to the guide member, at least one through hole is horizontally disposed on the guide member. The centering arm is disposed with a plug-in hole at the same height as the through hole. With this arrangement, when the crane rollers need maintenance, the plug-in hole can be aligned with the through hole, and then a rigid plug-in rod can be used to pass through the through hole and the plug-in hole in sequence to fix the lifting unit. Then the rollers can be disassembled and maintained without removing the lifting unit from the truss boom, making maintenance more convenient. After the rollers are maintained, the plug-in rod can be disassembled. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a crane according to the present invention. Figure 1 .

[0014] Figure 2 for Figure 1 The diagram shown is a partially enlarged structural schematic of point A in a crane according to this utility model.

[0015] Figure 3 This is a schematic diagram of the overall structure of a crane according to the present invention. Figure 2 .

[0016] Figure 4 for Figure 3 The diagram shown is a partially enlarged structural schematic of point B in a crane according to this utility model.

[0017] Figure 5 This is a schematic diagram of the overall structure of a crane according to the present invention. Figure 3 .

[0018] Figure 6 for Figure 5 The diagram shown is a partially enlarged structural schematic of point C in a crane according to this utility model.

[0019] Figure 7 This is a structural schematic diagram of the lifting unit in a crane according to the present invention.

[0020] Figure 8 for Figure 7 The diagram shown is a partially enlarged structural schematic of point D in a crane according to this utility model.

[0021] In the diagram: 1. Base; 2. Truss arm; 21. Guide component; 210. Through hole; 22. Connecting sleeve; 23. Guide rail; 25. Centering arm; 251. Arm plate; 252. Insertion hole; 253. Reinforcing plate; 3. Connecting shaft; 4. Drive unit; 41. First drive motor; 42. Driven gear; 43. Transmission chain; 5. Lifting unit; 51. Support frame; 52. Roller frame; 53. Roller; 54. Second drive motor; 55. Lifting rope; 550. Winch. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] Example 1

[0024] Please refer to Figure 1-5 As a specific implementation, the technical solution of this utility model is as follows: a crane truss arm 2, including a guide rail 23 and a guide member 21 disposed below the guide rail 23 along the guiding direction of the guide rail 23. The guide member 21 is adapted to guide at least one centering arm, and the centering arm 25 is used to connect with the lifting unit 5. Along the guiding direction perpendicular to the guide member 21, at least one through hole 210 is horizontally disposed on the guide member 21, and the centering arm is provided with a plug hole 252 at the same height as the through hole 210.

[0025] For details, please refer to Figures 1-5 The specific structure of the truss arm 2 provided in this application is as follows: it includes a body welded from a steel frame and a guide rail 23 disposed on the lower side of the body. The guide rail 23 is made of I-beams. A guide member 21 is welded to the lower surface of the guide rail 23. The guide member 21 has a strip-shaped plate structure. A connecting sleeve 22 is welded to one end of the truss arm 2. The guiding directions of the guide rail 23 and the guide member 21 are both perpendicular to the axis of the connecting sleeve 22. The lifting unit 5 is connected to the guide rail 23 through rollers 53, thereby enabling it to move along the length of the truss arm 2. (Refer to...) Figure 6 , Figure 8The lifting unit 5 is equipped with a centering arm 25 that is adapted to the guide member 21. The centering arm 25 is provided with a plug hole 252, and the guide member 21 is provided with a through hole 210. When the lifting unit 5 is set on the guide rail 23, the plug hole 252 and the through hole 210 are at the same height. Thus, when the lifting unit 5 moves on the guide rail 23 and the plug hole 252 aligns with the through hole 210, the plug hole 252 and the through hole 210 are coaxial. With this setting, when the roller 53 needs to be repaired, the plug hole 252 can be aligned with the through hole 210, and then a rigid plug rod can be used to pass through the through hole 210 and the plug hole 252 in sequence to fix the lifting unit 5. Then the roller 53 can be disassembled and repaired without removing the lifting unit 5 from the truss arm 2, making the repair more convenient. After repairing the roller 53, the plug rod can be removed.

[0026] Furthermore, as a preferred embodiment, two centering arms 25 are provided at intervals along the guiding direction of the guide member 21, and a plurality of through holes 210 are provided at intervals on the guide member 21, the interval between two adjacent through holes 210 being equal to the interval between the insertion holes 252 on the two centering arms 25.

[0027] Specifically, as a preferred embodiment, a plurality of through holes 210 are evenly spaced on the guide rail 23, as shown in the reference. Figure 7 A centering arm 25 is provided on both sides of the lifting unit 5, and the distance between two adjacent through holes 210 is equal to the distance between the insertion holes 252 on the two centering arms 25. With this arrangement, when the roller 53 is being maintained, the two centering arms 25 can be connected to the guide member 21 through two insertion rods, thereby supporting both sides of the lifting unit 5, improving stability, and thus improving safety.

[0028] Furthermore, as a preferred embodiment, refer to Figure 7 , Figure 8 The centering arm 25 includes two arm plates 251 respectively disposed on both sides of the guide member 21 and a reinforcing plate 253 connecting the two arm plates 251. Both arm plates 251 are in sliding guide engagement with the side of the guide member 21. Specifically, the centering arm 25 plate includes two arm plates 251 fixedly connected by welding and a reinforcing plate 253 disposed between the two arm plates 251 and welded to both arm plates 251. (Refer to...) Figure 6 When the lifting unit 5 is installed on the truss arm 2, the two arm plates 251 are located on both sides of the guide member 21, and slide in contact with the two sides of the guide member 21. Through this arrangement, the lifting unit 5 can be reduced from swaying in the direction perpendicular to the length of the truss arm 2 by forming a guiding and limiting fit between the middle arm 25 and the guide member 21, thereby improving stability.

[0029] Furthermore, as a preferred embodiment, the centering arm 25 is detachably and fixedly connected to the lifting unit 5. (See reference) Figure 6 , Figure 7 The middle arm 25 includes a fixing plate welded to two arm plates 251. The fixing plate is provided with connecting holes, and the lifting unit 5 is provided with corresponding threaded holes. The fixing plate can be fixed to the lifting unit 5 by means of screws, thereby achieving the effect of detachable fixed connection. This setting method facilitates the disassembly and maintenance of the middle arm 25.

[0030] Furthermore, as a specific implementation, a connecting sleeve 22 is integrally welded to the end of the truss arm 2. Specifically, by providing the connecting sleeve 22, the connecting sleeve 22 can rotate with the base 1, thereby allowing the truss arm 2 to swing around the axis of the connecting sleeve 22.

[0031] Example 2

[0032] This application also provides a crane, referenced Figures 6-8 It includes a base 1, wherein the truss arm 2 described in Embodiment 1 is rotatably disposed on the upper end of the base 1, and a lifting unit 5 is movably disposed on the guide rail 23.

[0033] For details, please refer to Figures 1-8 The crane includes a base 1, with a connecting shaft 3 vertically mounted on the upper end of the base 1. A connecting sleeve 22 of the truss arm 2 is fitted onto the connecting shaft 3. The connecting shaft 3 is rotatably engaged with the base 1. The connecting sleeve 22 is a spline sleeve, and the connecting shaft 3 is a spline shaft. The connecting shaft 3 and the connecting sleeve 22 are in a transmission engagement. The upper end of the connecting shaft 3 is driven by a drive unit 4. The drive unit 4 includes a driven gear 42 that is driven by the upper end of the connecting shaft 3, a first drive motor 41, and a transmission chain 43 that drives the first drive motor 41 and the driven gear 42. The first drive motor 41 can drive the connecting shaft 3 to rotate around its axis, thereby achieving the effect of driving the truss arm 2 to swing.

[0034] Furthermore, as a specific implementation method, refer to Figure 4 , Figures 6-8The lifting unit 5 is equipped with a roller frame 52, on which rollers 53 are rotatably mounted. The rollers 53 roll in cooperation with the upper surface of the guide rail 23. Specifically, the lifting unit 5 has the following structure: it includes a winch 550 rotatably mounted on a support frame 51, a second drive motor 54 driven by the winch 550, and a hoisting rope 55 wound on the winch 550. The centering arm 25 is detachably fixed to the support frame 51. Two roller frames 52 are detachably fixed to the support frame 51 by screws. Each roller frame 52 is equipped with three rollers 53. The two roller frames 52 are located on opposite sides of the support frame 51. Thus, when disassembling and maintaining the rollers 53, only the roller frame 52 needs to be disassembled to remove the rollers 53 together, which facilitates the disassembly and installation of the rollers 53.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A crane truss arm characterized by, The device comprises a guide rail (23), a guide piece (21) arranged below the guide rail (23) along the guide direction of the guide rail (23), the guide piece (21) is guided to be fitted with at least one centering arm (25), the centering arm (25) is used for connecting with a lifting unit (5); along the vertical direction of the guide direction of the guide piece (21), at least one through hole (210) is horizontally arranged on the guide piece (21), and the centering arm is provided with a plug-in hole (252) which is the same height as the through hole (210).

2. A crane truss arm according to claim 1, characterised in that, Along the guide direction of the guide piece (21), two centering arms (25) are arranged at intervals, a plurality of through holes (210) are arranged at intervals on the guide piece (21), and the interval distance of two adjacent through holes (210) is equal to the interval distance of the plug-in holes (252) on the two centering arms (25).

3. A crane truss arm according to claim 1, characterized in that The centering arm (25) comprises two arm plates (251) arranged on both sides of the guide piece (21) and a reinforcing plate (253) connecting the two arm plates (251), and the two arm plates (251) are slidably connected with the side surface of the guide piece (21).

4. A crane truss arm according to claim 2 or 3, characterised in that, The centering arm (25) is used for detachable fixed connection with the lifting unit (5).

5. A crane truss arm according to claim 4, characterised in that, The end of the truss arm (2) is integrally welded with a connecting sleeve (22).

6. A crane comprising a truss arm according to any one of claims 1-5, characterized in that, Further comprising a base (1), the truss arm (2) is rotatably arranged at the upper end of the base (1), and the guide rail (23) is movably arranged with a lifting unit (5).

7. A crane according to claim 6, characterised in that The lifting unit (5) is provided with a roller frame (52), the roller frame (52) is rotatably arranged with a roller (53), and the roller is rollingly connected with the upper surface of the guide rail (23).

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