Slewing device and derrick for hoisting equipment

Abstract

The utility model discloses a slewer for hoisting equipment and a derrick, the slewer for hoisting equipment comprises a lower support, an upper support and a slewing driving mechanism, the slewing driving mechanism comprises a driving component, a driving gear and an internal meshing fitting piece, the upper support, the internal meshing fitting piece and the lower support are sequentially arranged from top to bottom, the inner meshing matching part comprises an inner meshing ring body arranged on the lower support and an outer ring body rotationally arranged on the outer side of the inner meshing ring body, a driving shaft of the driving assembly is arranged downwards, the driving gear is connected with the driving shaft and is in meshing connection with the inner side of the inner meshing ring body, and the outer ring body and the driving assembly are connected with the upper support. The driving gear and the inner meshing matching piece are of an inner meshing structure, the driving assembly can be arranged on the inner side of the upper support, the boundary dimension of the slewing device is reduced, and the slewing device can be suitable for narrow operation scenes.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to a slewing device and a holding rod for lifting equipment. Background Art

[0002] The electric pole holder plays a key role in the construction of power grid towers. The pole holder boom performs rotational motion through the slewing bearing. The slewing mechanism and the slewing bearing are meshed with gears to transmit the rotational motion. When the pinion of the slewing mechanism rotates with the motor, the slewing bearing gear meshes with the pinion, thereby driving the slewing bearing and the pole holder boom to perform rotational motion. It can adapt to different speed and torque requirements and meet the needs of pole holders of different specifications. During the construction of the tower, the pole holder is set on the inner side of the tower, and after the construction of the tower is completed, the pole holder needs to retract the arm and lower the tower. The structural size of the tower directly limits the maximum external size of the pole holder. In the prior art, the external size of the slewing assembly of the pole holder is relatively large, which limits its use in the construction of small towers. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides a slewing device and a holding rod for lifting equipment, aiming to solve the technical problem that the existing slewing assembly has large external dimensions and is not suitable for operation in a narrow space.

[0004] To achieve the above-mentioned purpose, the utility model provides a slewing device for lifting equipment, wherein the slewing device for lifting equipment includes a lower support, an upper support and a slewing drive mechanism, the slewing drive mechanism includes a driving assembly, a driving gear and an internal meshing fitting, the upper support, the internal meshing fitting and the lower support are arranged in sequence from top to bottom, the internal meshing fitting includes an inner meshing ring body arranged on the lower support and an outer ring body rotatably arranged on the outside of the inner meshing ring body, the driving shaft of the driving assembly is arranged downward, the driving gear is connected to the driving shaft and meshed with the inner side of the inner meshing ring body, and the outer ring body and the driving assembly are respectively connected to the upper support.

[0005] In the embodiment of the utility model, a slewing support is further provided on the driving shaft of the driving assembly. The slewing support is provided on the upper side of the driving gear and connected to the upper support.

[0006] In an embodiment of the utility model, an assembly space is formed on the upper support on the side deviating from the axial center line of the outer ring body, the drive shaft of the drive assembly is passed through the assembly space, and the slewing support body is located on the upper side of the upper support and connected to the upper support, and the drive gear passes through the assembly space and extends into the inner meshing ring body.

[0007] In an embodiment of the utility model, the upper support includes a top plate portion, a bottom plate portion and a connecting ring plate. The top plate portion and the bottom plate portion are relatively spaced from top to bottom, and both are provided with assembly holes on the side deviating from the axial center line of the outer ring body. The upper and lower ends of the connecting ring plate are respectively connected to the top plate portion and the bottom plate portion, and the connecting ring plate is arranged around the periphery of the assembly hole to form an assembly space.

[0008] In the embodiment of the utility model, the upper support is also formed with a process space, the process space is separated from the assembly space, and the process space can be used for the cable of the lifting equipment to pass through.

[0009] In the embodiment of the utility model, the bottom plate is connected to a first ear plate extending upward, and the top plate is provided with a positioning notch for the first ear plate to pass through, so that the connection hole of the first ear plate is located above the top plate.

[0010] In an embodiment of the utility model, the upper support also includes an outer ring plate arranged between the top plate portion and the bottom plate portion, the connecting ring plate and the inner wall of the outer ring plate enclose an assembly space, the bottom plate portion is formed with a ring body mounting interface located on the inner side of the outer ring plate, and a fastener for connecting the outer ring body is passed through the ring body mounting interface.

[0011] In an embodiment of the utility model, the slewing device for the lifting equipment further comprises a workbench, and the workbench is arranged on the side of the upper support close to the driving assembly.

[0012] In an embodiment of the utility model, a first connecting portion is provided on the upper support extending toward one side of the workbench, a second connecting portion is provided on the workbench corresponding to the first connecting portion, and the rotating device for the lifting equipment also includes a connecting pin shaft transversely inserted into the first connecting portion and the second connecting portion.

[0013] In order to achieve the above-mentioned object, the utility model also provides a holding rod, wherein the holding rod includes the above-mentioned rotating device for the lifting equipment.

[0014] Through the above technical solution, the slewing device for lifting equipment provided by the embodiment of the utility model has the following beneficial effects:

[0015] When the above-mentioned slewing device for lifting equipment is used, it includes an upper support, an internal meshing fitting and a lower support which are arranged in sequence from top to bottom, the lower support is connected to the tower body of the lifting equipment, the inner meshing ring of the inner meshing fitting is connected to the lower support, the outer ring of the inner meshing fitting is rotatably arranged around the inner meshing ring and connected to the upper support, the driving assembly is arranged on the upper support, when the lifting equipment performs a slewing operation, the driving assembly drives the driving gear to rotate, the inner meshing ring is fixedly connected to the lower support, so that the driving assembly and the upper support connected to the driving assembly rotate around the central axis of the inner meshing ring, since the driving gear and the inner meshing fitting are of an internal meshing structure, the driving assembly can be arranged on the inner side of the upper support, which reduces the external dimensions of the slewing device and can be suitable for narrow working scenes.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic structural diagram of a slewing device for a lifting device according to an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a rotary drive mechanism according to an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of an upper support and a workbench according to an embodiment of the utility model;

[0021] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0022] Figure 5 It is a structural schematic diagram of a holding pole in one embodiment of the utility model.

[0023] Description of Reference Numerals

[0024] 1 Lower support 11 Second ear plate

[0025] 2 Upper support 21 Connecting ring plate

[0026] 22 Outer ring plate 23 Process space

[0027] 24 Assembly space 25 Top plate

[0028] 251 Positioning notch 26 Bottom plate

[0029] 261 Ring body installation interface 27 First ear plate

[0030] 271 Support plate portion 272 Connecting plate portion

[0031] 28 Lifting eye 29 Second connection part

[0032] 3 Rotary drive mechanism 31 Drive components

[0033] 32 driving gear 33 internal gearing matching part

[0034] 331 inner meshing ring body 332 outer ring body

[0035] 34 slewing bearing 35 drive shaft

[0036] 4 Workbench 5 Tower

[0037] 6 Boom DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0039] The following describes the slewing device for lifting equipment of the present utility model with reference to the accompanying drawings.

[0040] like Figure 1 and Figure 2 As shown, the utility model provides a slewing device for lifting equipment, wherein the slewing device for lifting equipment comprises:

[0041] Lower support 1;

[0042] An upper support 2, located on the upper side of the lower support 1;

[0043] The rotary drive mechanism 3 includes a drive assembly 31, a drive gear 32 and an inner meshing fitting 33. The inner meshing fitting 33 includes an inner meshing ring body 331 arranged on the lower support 1 and an outer ring body 332 rotatably arranged on the outer side of the inner meshing ring body 331. The drive shaft of the drive assembly 31 is arranged downward, the drive gear 32 is connected to the drive shaft and meshed with the inner side of the inner meshing ring body 331, and the outer ring body 332 and the drive assembly 31 are respectively connected to the upper support 2.

[0044] When the above-mentioned slewing device for lifting equipment is used, it includes an upper support 2, an internal meshing fitting 33 and a lower support 1 which are arranged in sequence from top to bottom, the lower support 1 is connected to the tower body 5 of the lifting equipment, the inner meshing ring 331 of the inner meshing fitting 33 is connected to the lower support 1, the outer ring 332 of the inner meshing fitting 33 is rotatably arranged around the inner meshing ring 331 and connected to the upper support 2, the driving component 31 is arranged on the upper support 2, when the lifting equipment performs a slewing operation, the driving component 31 drives the driving gear 32 to rotate, the inner meshing ring 331 is fixedly connected to the lower support 1, so that the driving component 31 and the upper support 2 connected to the driving component 31 rotate around the central axis of the inner meshing ring 331, because the driving gear 32 and the inner meshing fitting 33 are of an internal meshing structure, the driving component 31 can be arranged on the inner side of the upper support 2, which reduces the external dimensions of the slewing device and can be suitable for narrow working scenes.

[0045] Specifically, the drive assembly 31 includes a drive motor, which is vertically arranged above the upper support 2 and fixed relative to the upper support 2, so that the operator can disassemble and maintain the drive motor. Of course, the utility model is not limited to this, and the drive assembly 31 can also be arranged on the lower support 1, and the output shaft of the drive assembly 31 is arranged upward, the inner meshing ring body 331 is connected to the upper support 2, and the outer ring body 332 is connected to the lower support 1; the drive assembly 31 can also be hydraulically driven.

[0046] It should be particularly noted that the slewing device provided by the utility model is applicable to a variety of tower lifting equipment, and is particularly applicable to the holding rod used in iron tower construction.

[0047] like Figure 2 As shown, in the embodiment of the utility model, a slewing support 34 is further provided on the driving shaft 35 of the driving assembly 31, and the slewing support 34 is provided on the upper side of the driving gear 32 and connected to the upper support 2. The slewing support 34 includes an inner ring and an outer ring, the outer ring is fixedly connected to the upper support 2, and the inner ring is connected to the driving shaft 35 of the driving assembly 31 and can be rotatably arranged. The lateral force received by the driving shaft 35 is transmitted to the upper support 2 through the slewing support, which can reduce the lateral load received by the driving motor.

[0048] like Figure 3 As shown, in the embodiment of the utility model, the upper support 2 is formed with an assembly space 24 on the side deviating from the axial center line of the outer ring body 332, the drive shaft 35 of the drive assembly 31 is passed through the assembly space 24, and the slewing support body 34 is located on the upper side of the upper support 2 and connected to the upper support 2, and the drive gear 32 passes through the assembly space 24 and extends into the inner meshing ring body 331.

[0049] In the embodiment of the utility model, the upper support 2 includes a top plate portion 25, a bottom plate portion 26 and a connecting ring plate 21, the top plate portion 25 and the bottom plate portion 26 are arranged relatively spaced from top to bottom, and both are provided with an assembly through hole on the side deviating from the axis of the outer ring body 332, the upper and lower ends of the connecting ring plate 21 are respectively connected to the top plate portion 25 and the bottom plate portion 26, and the connecting ring plate 21 is arranged around the periphery of the assembly through hole to form an assembly space 24. The arrangement of the top plate portion 25 and the bottom plate portion 26 expands the upper and lower surface areas of the upper support 2, and the connecting structures such as the ear plate and the inner meshing fitting 33 can be arranged on the top plate portion 25 or the bottom plate portion 26.

[0050] In the embodiment of the utility model, the upper support 2 is also formed with a process space 23, which is separated from the assembly space 24, and the process space 23 can be used for the cable of the lifting equipment to pass through. The cable of the lifting equipment is wound from the ground to the hook device on the boom 6. The function of the process space 23 is to arrange the cable on the inner side of the slewing device to avoid the cable interfering with the rotation of the boom 6 during the driving process of the slewing device. The process space 23 and the assembly space 24 are independent of each other, and the cable and the drive assembly 31 are separated by the connecting ring plate 21 to avoid the dangerous situation of the cable being entangled in the drive gear 32 or the drive assembly 31. In addition, the opening of the process space 23 can also play a role in weight reduction.

[0051] like Figure 3 and Figure 4 As shown, in the embodiment of the utility model, the bottom plate 26 is connected with a first ear plate 27 extending upward, and the top plate 25 is provided with a positioning notch 251 for the first ear plate 27 to pass through, so that the connection hole of the first ear plate 27 is located above the top plate 25. The first ear plate 27 and the ear plate of the arm 6 form a male-female docking structure, and the connection between the two is achieved by a latch. The position of the first ear plate 27 must ensure sufficient accuracy, but in the actual production process, it is difficult to achieve integral casting of the first ear plate 27 and the top plate 25. Usually, the two are connected by welding. The welding operation needs to be completed manually, and the position accuracy is difficult to ensure. The positioning notch 251 can be directly opened by mechanical equipment during the production process of the top plate 25, and the position accuracy is better controlled. During assembly, the welding worker only needs to insert the first ear plate 27 into the positioning notch 251 to ensure the accuracy of the position, and then perform the welding operation.

[0052] Specifically, the top plate portion 25 is further provided with a lifting lug 28 for lifting the upper support 2 . Of course, it is also possible to lift the upper support 2 directly through the first lug plate 27 without providing the lifting lug 28 .

[0053] Furthermore, the first ear plate 27 includes a support plate portion 271 and a connecting plate portion 272 extending upward from the upper end of the support plate portion 271, the connecting plate portion 272 is embedded in the positioning notch 251 and is used to connect the arm 6, the lower end of the support plate portion 271 abuts the bottom plate portion 26, and the upper end portion of the support plate portion 271 abuts the top plate portion 25. The first ear plate 27 can not only meet the function of docking with the arm 6, but also form a support between the top plate portion 25 and the bottom plate portion 26, improve the structural strength of the upper support 2, and prevent the top plate portion 25 or the bottom plate portion 26 from deforming and bending; at the same time, during the welding process, the first ear plate 27 can directly stand on the bottom plate portion 26 through the positioning notch 251, which is convenient for welding workers to perform welding work. A reinforcing plate is also provided on the side of the support plate portion 271, and the reinforcing plate extends from the side of the support plate portion 271 away from the upper support 2 toward the upper support 2, and the reinforcing plate and the support plate portion 271 are arranged at an angle.

[0054] In the embodiment of the utility model, the upper support 2 also includes an outer ring plate 22 arranged between the top plate 25 and the bottom plate 26, the connecting ring plate 21 divides the inner cavity of the outer ring plate 22 into a process space 23 and an assembly space 24, and the bottom plate 26 is formed with a ring body installation interface 261 located on the inner side of the outer ring plate 22, and a fastener for connecting the outer ring body 332 is penetrated in the ring body installation interface 261. The ring body installation interface 261 is arranged away from the outer ring plate 22, and there is no need to open a hole in the outer ring plate 22, thereby reducing the process steps and reducing the manufacturing cost. Specifically, the top plate 25, the bottom plate 26 and the outer ring plate 22 are independently manufactured and formed, and then the three are connected as a whole by welding. The top plate 25 and the bottom plate 26 can be designed and manufactured according to the size of the tower body 5 and the boom 6 of the lifting equipment, without the need to additionally design and produce outer ring plates 22 of different sizes, which can reduce the production cost of the upper support 2.

[0055] In the embodiment of the utility model, the slewing device for the lifting equipment further includes a workbench 4, which is arranged on the side of the upper support 2 near the drive assembly 31. The workbench 4 can be used to place the control cabinet of the drive assembly 31, and can also be used for maintenance personnel to stand and move around, so that the maintenance personnel can easily inspect the drive assembly 31. Specifically, a fence is arranged on the outside of the workbench 4 to protect the safety of the maintenance personnel, and the control cabinet is arranged at a position away from the drive assembly 31 to avoid interfering with the work of the maintenance personnel.

[0056] In the embodiment of the utility model, the upper support 2 is provided with a first connection portion extending toward one side of the workbench 4, the workbench 4 is provided with a second connection portion 29 corresponding to the first connection portion, and the slewing device for the lifting equipment further includes a connecting pin shaft transversely passing through the first connection portion and the second connection portion 29. The workbench 4 is detachably connected to the upper support 2, which is convenient for transportation and assembly; for an iron tower with a particularly narrow internal space, the workbench 4 can be directly removed, and the control cabinet can be placed on the upper support 2, thereby further reducing the external dimensions of the slewing device.

[0057] like Figure 1 As shown, in the embodiment of the utility model, the lower support 1 is arranged in a rectangular shape, and the second ear plates 11 are horizontally extended from the four corners of the lower support 1. The slewing device is arranged on the inner side of the iron tower, and is connected to the iron tower through the fixing rope to maintain stability. The four second ear plates 11 correspond to the four main poles and four fixing ropes of the iron tower respectively. The connecting line of the second ear plate 11 and the main pole passes through the central axis of the lower support 1. The pulling force of each fixing rope on the lower support 1 can be decomposed into two perpendicular components, and the two components are equal in magnitude, thereby ensuring that the lower support 1 is uniformly stressed as a whole and has good stability.

[0058] Specifically, the lower support 1 is also through-set, and a steering wheel set is set at the lower side of the lower support 1. The cable extends upward along the outer side of the tower body 5 of the lifting equipment, passes through the steering wheel set, passes through the inner side of the slewing device, and finally is wound around the hook device of the boom 6. It should be noted that the lower support 1 has the same structural setting as the upper support 2, and therefore has the same beneficial effects as the upper support 2, which will not be repeated here.

[0059] like Figure 5 As shown, in order to achieve the above objectives, the utility model further provides a holding rod, wherein the holding rod includes the above-mentioned slewing device for lifting equipment. Since the holding rod adopts all the technical solutions of the above-mentioned embodiments, it has at least the above-mentioned beneficial effects, which will not be described one by one here.

[0060] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A slewing device for a lifting equipment, characterized in that: The lifting equipment slewing device comprises: Lower support (1); An upper support (2) located on the upper side of the lower support (1); A rotary drive mechanism (3) comprises a drive assembly (31), a drive gear (32) and an inner meshing fitting (33), wherein the inner meshing fitting (33) comprises an inner meshing ring body (331) arranged on the lower support (1) and an outer ring body (332) rotatably arranged on the outer side of the inner meshing ring body (331), the drive shaft of the drive assembly (31) is arranged downward, the drive gear (32) is connected to the drive shaft and meshed with the inner side of the inner meshing ring body (331), and the outer ring body (332) and the drive assembly (31) are respectively connected to the upper support (2).

2. The slewing device for lifting equipment according to claim 1, characterized in that: A slewing bearing (34) is also provided on the driving shaft of the driving assembly (31); the slewing bearing (34) is provided on the upper side of the driving gear (32) and is connected to the upper support (2).

3. The slewing device for lifting equipment according to claim 2, characterized in that: The upper support (2) is formed with an assembly space (24) on a side deviating from the axis of the outer ring body (332); the drive shaft (35) of the drive assembly (31) is inserted into the assembly space (24); the slewing support body (34) is located on the upper side of the upper support (2) and is connected to the upper support (2); the drive gear (32) passes through the assembly space (24) and extends into the inner meshing ring body (331).

4. The slewing device for lifting equipment according to claim 3, characterized in that: The upper support (2) comprises a top plate portion (25), a bottom plate portion (26) and a connecting ring plate (21); the top plate portion (25) and the bottom plate portion (26) are arranged relative to each other from top to bottom and are both provided with an assembly hole on a side deviating from the axial center line of the outer ring body (332); the upper and lower ends of the connecting ring plate (21) are respectively connected to the top plate portion (25) and the bottom plate portion (26), and the connecting ring plate (21) is arranged around the periphery of the assembly hole to form the assembly space (24).

5. The slewing device for lifting equipment according to claim 3, characterized in that: The upper support (2) is also formed with a process space (23), the process space (23) is separated from the assembly space (24), and the process space (23) allows the cable of the lifting equipment to pass through.

6. The slewing device for lifting equipment according to claim 4, characterized in that: The bottom plate portion (26) is connected to a first ear plate (27) extending upward, and the top plate portion (25) is provided with a positioning notch (251) for the first ear plate (27) to pass through, so that the connection hole of the first ear plate (27) is located above the top plate portion (25).

7. The slewing device for lifting equipment according to claim 4, characterized in that: The upper support (2) also includes an outer ring plate (22) arranged between the top plate portion (25) and the bottom plate portion (26), the connecting ring plate (21) and the inner wall of the outer ring plate (22) enclose the assembly space (24), and the bottom plate portion (26) is formed with a ring body mounting interface (261) located on the inner side of the outer ring plate (22), and a fastener for connecting the outer ring body (332) is inserted into the ring body mounting interface (261).

8. The slewing device for lifting equipment according to any one of claims 1 to 7, characterized in that: The lifting equipment slewing device further comprises a workbench (4), wherein the workbench (4) is arranged on the side of the upper support (2) close to the driving assembly (31).

9. The slewing device for lifting equipment according to claim 8, characterized in that: The upper support (2) is provided with a first connection portion extending toward one side of the workbench (4), and the workbench (4) is provided with a second connection portion (29) corresponding to the first connection portion. The slewing device for the lifting equipment also includes a connecting pin shaft transversely inserted into the first connection portion and the second connection portion (29).

10. A pole holding device, characterized in that: The holding rod comprises a slewing device for lifting equipment according to any one of claims 1 to 9.

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