A crane support arm having a load bearing bolster

Abstract

The utility model relates to a crane relevant technical field, especially a crane supporting arm with bearing support seat, including fixed base, support frame, support arm and bearing support piece, the bearing support piece includes mounting bracket, support support pole, guide sleeve, adjusting assembly and drive assembly, a crane supporting arm with bearing support seat of the utility model, through the horizontal movement of drive assembly to adjusting assembly, and through the up and down movement of support support pole when adjusting assembly horizontal movement, and then play the angle adjustment to support arm, in this process, effectively reduced the direct pressure of support arm to bearing support piece, thereby effectively prolongs the service life of bearing support piece.

Description

Technical Field

[0001] This utility model relates to the field of crane-related technology, and in particular to a crane support arm with a load-bearing support seat. Background Technology

[0002] The crane boom is an important component of a crane, primarily used to provide necessary support and stability when lifting heavy objects. It is typically made of high-strength materials, such as special alloy steel, to ensure sufficient strength and durability while minimizing its own weight.

[0003] The related technology, with publication number CN205099229U, describes a folding boom crane and its boom. The folding boom crane includes a folding boom, which comprises a support boom and a lifting boom. The support boom includes a fixed segment serving as a support base and a swing segment hinged to the fixed segment. The swing segment is connected to a first telescopic drive device. The lifting boom is hinged to the swing segment and a second telescopic drive device is provided between them. The hinge points of the first and second connecting rods and the second telescopic drive device are coaxial. Corresponding segments of the swing segment, the corresponding segments of the lifting boom, and the first and second connecting rods together constitute a four-bar linkage. By retracting the second telescopic drive device, the four-bar linkage can be folded, allowing the top and bottom positions of the lifting boom to be interchanged. By extending the second telescopic drive device, the four-bar linkage can be raised and tilted upwards. This folding boom crane reduces the maintenance and repair costs of wind turbine units.

[0004] Regarding the crane support arm in the above-mentioned technology, due to its inherent design characteristics, the existing folding arm design often cannot effectively disperse and absorb the pressure on the second telescopic drive device. As a result, during long-term use, the second telescopic drive device is prone to damage due to frequent pressure, which reduces the stability and service life of the equipment. Utility Model Content

[0005] This utility model solves the problems in related technologies and proposes a crane support arm with a load-bearing support seat. The adjustment component is moved horizontally by the drive component, and the support rod is moved up and down by the adjustment component during the horizontal movement, thereby adjusting the angle of the support arm. In this process, the direct pressure of the support arm on the load-bearing support is effectively reduced, thus effectively extending the service life of the load-bearing support.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a crane support arm with a load-bearing support base, including a fixed base, a support frame fixedly disposed on one side of the upper end face of the fixed base, a support arm hinged to the support frame, and a load-bearing support member disposed between the support frame and the support arm;

[0007] The load-bearing support includes a mounting frame fixedly connected to the support frame, a support rod slidably connected to the upper end of the mounting frame and connected to the support arm, a guide sleeve fixedly disposed on the mounting frame and adapted to the support rod, a support spring disposed on the outer periphery of the support rod, an adjustment component disposed at the other end of the support rod, and a drive component for driving the adjustment component.

[0008] By adopting the above technical solution, the fixed base provides stable foundation support, the support frame is fixed on the base and connected to the support arm by a hinge, allowing the support arm to be angled relative to the support frame. Then, through the sliding connection between the mounting bracket and the support rod, the support rod can move horizontally under the action of the drive component, thereby driving the support arm to adjust vertically. Finally, the adjustment component and the drive component cooperate to realize the vertical movement of the support rod. In this way, the angle of the support arm can be adjusted, and during the adjustment process, the pressure of the support arm on the load-bearing support is effectively dispersed, avoiding direct pressure and thus extending the service life of the load-bearing support.

[0009] As a preferred embodiment, the adjustment assembly includes a slide rail slidably disposed on the inner side of the lower end face of the mounting bracket, a support slide block slidably connected to the slide rail, a pulley disposed on the end of the support rod away from the end connected to the support arm, and a slide groove disposed on the support slide block that is adapted to the pulley. The slide rail is fixedly connected to the mounting bracket, and the slide rail facilitates the horizontal movement of the support slide block. The support slide block is configured as a right-angled triangular structure, and the inclined surface of the support slide block is disposed relative to the pulley.

[0010] By adopting the above technical solution, the support slide is designed as a right-angled triangle structure, with its inclined surface in contact with the pulley. This not only provides stable support force, but also allows for adjustment in the height direction through the relative movement of the inclined surface and the pulley contact surface, thereby realizing the change of the support arm angle in the scene.

[0011] As a preferred embodiment, the inner wall of the groove is tangent to the outer side of the pulley, and the inner wall of the groove has the same curvature as the inclined surface of the support slide.

[0012] By adopting the above technical solution, the inclined surface of the support slide contacts the pulley, pushing the pulley to move in the slide groove. Since the slide groove is tangent to the inner wall of the pulley and is set with the same curvature, the movement direction of the pulley is effectively guided.

[0013] As a preferred embodiment, one end of the support spring is fixedly connected to the lower end face of the guide sleeve, and the other end of the support spring is fixedly connected to the end of the support rod away from the support arm.

[0014] By adopting the above technical solution, one end of the support spring is fixedly connected to the lower end face of the guide sleeve, and the other end is fixedly connected to the end of the support rod away from the support arm. When the support rod changes in height, the support spring can effectively adjust the tension to ensure appropriate contact force between the pulley on the lower end face of the support rod and the support slide. At the same time, the support spring can also buffer the pressure on the support rod, avoiding rapid wear or damage caused by excessive pressure, thereby effectively extending the service life of the support rod and ensuring the stability and reliability of the overall system.

[0015] As a preferred embodiment, the drive assembly includes a connecting rod fixedly disposed on one side of the support slide, a push-pull cylinder connected to the connecting rod, and a support base for mounting the push-pull cylinder. The connecting rod is disposed on the right-angle side of the support slide, and the mounting bracket is provided with a through hole adapted to the connecting rod.

[0016] By adopting the above technical solution, the stability of the connection between the connecting rod and the support slide is effectively guaranteed, and the movement direction of the connecting rod can be easily guided through the through hole.

[0017] As a preferred embodiment, the telescopic end of the push-pull cylinder is connected to the connecting rod, the fixed seat of the push-pull cylinder is fixedly connected to the support seat, and the support seat is fixedly connected to the mounting bracket. The connecting rod, which is fixedly set on one side of the support slide, engages with the through hole on the mounting bracket.

[0018] By adopting the above technical solution, the connection stability between the connecting rod and the support slide is effectively ensured, and the movement direction of the connecting rod can be guided through the through hole. The telescopic end of the push-pull cylinder is connected to the connecting rod, the fixed seat is fixed to the support seat, and the support seat is fixedly connected to the mounting frame. This structural design allows the telescopic action of the push-pull cylinder to be transmitted through the connecting rod, driving the support slide to move horizontally in a predetermined direction, thereby achieving precise control and movement of the support slide. Specifically, when the push-pull cylinder extends, the connecting rod also moves in the corresponding direction along the through hole on the mounting frame, directly pushing the support slide to move synchronously; conversely, when the push-pull cylinder retracts, the support slide moves in the opposite direction.

[0019] As a preferred embodiment, it further includes a guide groove disposed on the outer periphery of the support rod and a guide protrusion disposed in the inner cavity of the guide sleeve and adapted to the guide groove, wherein the guide protrusion is fixedly connected to the inner wall of the guide sleeve.

[0020] By adopting the above technical solution, and by setting guide grooves on the outer periphery of the support rod and setting guide protrusions that match the guide grooves in the inner cavity of the guide sleeve, efficient guidance of the support rod during movement is achieved. The guide protrusions are fixedly connected to the inner wall of the guide sleeve, ensuring the stability of the structure. When the support rod moves up and down, the guide grooves and guide protrusions cooperate with each other, playing a complementary role. This not only effectively prevents the support rod from shifting or tilting during movement, but also ensures that it moves smoothly and accurately along the predetermined path, improving the operating efficiency and reliability of the entire system.

[0021] Compared with the prior art, the beneficial effects of this utility model are: This utility model;

[0022] The fixed base provides stable foundation support. The support frame is fixed on the base and connected to the support arm by a hinge, so that the support arm can be adjusted at an angle relative to the support frame.

[0023] Through the sliding connection between the mounting bracket and the support rod, the support rod can move horizontally as the adjustment component moves under the action of the drive component, thereby driving the support arm to be adjusted vertically.

[0024] The adjustment and drive components work together to enable the support rod to move up and down in the vertical direction. In this way, the angle of the support arm can be adjusted. During the adjustment process, the pressure of the support arm on the load-bearing support is effectively dispersed, avoiding direct pressure and thus extending the service life of the load-bearing support. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the crane support arm with a load-bearing support seat according to this utility model;

[0026] Figure 2 This is a structural schematic diagram of the load-bearing support member in the crane support arm with a load-bearing support seat according to this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the support rod and guide sleeve assembled together in the support arm of the crane with a load-bearing support seat according to this utility model;

[0028] Figure 4 This utility model relates to a crane support arm with a load-bearing support base. Figure 3 A structural schematic diagram of the enlarged view at point A.

[0029] In the picture:

[0030] 1. Fixed base; 2. Support frame; 21. Support arm; 3. Mounting bracket; 4. Support rod; 40. Guide groove; 41. Support spring; 5. Guide sleeve; 51. Guide protrusion; 6. Support slide; 61. Slide groove; 7. Pulley; 8. Sliding rod; 81. Push-pull cylinder; 811. Support seat; 9. Slide rail. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0034] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0037] like Figures 1 to 4 As shown, a crane boom with a load-bearing support includes a fixed base 1, a support frame 2 fixedly disposed on one side of the upper surface of the fixed base 1, and a support boom 21 hinged to the support frame 2. The fixed base 1 provides stable foundation support, and the support frame 2 is fixed on the base and connected to the support boom 21 by a hinge, allowing the support boom 21 to be angled relative to the support frame 2.

[0038] In one embodiment, please refer to [specific example]. Figure 1 , Figure 2 , Figure 3 and Figure 4 and a load-bearing support member disposed between the support frame 2 and the support arm 21;

[0039] In one embodiment, please refer to [specific example]. Figure 2 , Figure 3and Figure 4 The supporting components include a mounting frame 3 fixedly connected to the support frame 2, a support rod 4 slidably connected to the upper end of the mounting frame 3 and connected to the support arm 21, a guide sleeve 5 fixedly mounted on the mounting frame 3 and adapted to the support rod 4, a support spring 41 disposed on the outer periphery of the support rod 4, an adjustment assembly disposed at the other end of the support rod 4, and a drive assembly for driving the adjustment assembly. The adjustment assembly includes a slide rail 9 slidably disposed on the inner side of the lower end face of the mounting frame 3, a support slide 6 slidably connected to the slide rail 9, and a support rod 4 disposed away from the support arm 21. The support slide 6 has a pulley 7 at one end and a groove 61 on the support slide 6 that matches the pulley 7. The slide rail 9 is fixedly connected to the mounting bracket 3. The slide rail 9 facilitates the horizontal movement of the support slide 6. The support slide 6 is designed as a right-angled triangle, and the inclined surface of the support slide 6 is set relative to the pulley 7. The design of the support slide 6 as a right-angled triangle, with its inclined surface in contact with the pulley 7, provides stable support force and allows for height adjustment through the relative movement of the inclined surface and the contact surface of the pulley 7, thereby realizing the change of the angle of the support arm 21 in the scene. The working principle is as follows: When it is necessary to adjust the angle of the support arm 21, the support slide 6 moves horizontally along the slide rail 9 under the action of the drive component. At the same time, the inclined surface of the support slide 6 contacts the pulley 7, pushing the pulley 7 to move in the groove 61. Since the groove 61 is tangent to the inner wall of the pulley 7 and has the same curvature, it ensures that the movement direction of the pulley 7 is effectively guided, thereby achieving the purpose of adjusting the height of the support rod 4 and the angle of the support arm 21. The overall workflow is as follows: First, the horizontally moving support slide 6 is on the slide rail 9; second, the pulley 7 moves along the same curvature trajectory in the slide groove 61; finally, the height of the support rod 4 and the angle of the support arm 21 are adjusted in real time by the relative movement of the inclined surface of the support slide 6 and the pulley 7.

[0040] In one embodiment, please refer to [specific example]. Figure 2 , Figure 3 and Figure 4 The inner wall of the slide groove 61 is tangent to the outer side of the pulley 7, and the inner wall of the slide groove 61 is set with the same curvature as the inclined surface of the support slide 6. The inclined surface of the support slide 6 contacts the pulley 7, pushing the pulley 7 to move in the slide groove 61. Since the slide groove 61 is tangent to the inner wall of the pulley 7 and is set with the same curvature, the movement direction of the pulley 7 is effectively guided.

[0041] In one embodiment, please refer to [specific example]. Figure 1 , Figure 2 , Figure 3 and Figure 4One end of the support spring 41 is fixedly connected to the lower end face of the guide sleeve 5, and the other end of the support spring 41 is fixedly connected to the end of the support rod 4 away from the support arm 21. When the support rod 4 changes in height, the support spring 41 can effectively adjust the tension to ensure appropriate contact force between the pulley 7 on the lower end face of the support rod 4 and the support slide 6. At the same time, the support spring 41 can also buffer the pressure on the support rod 4, avoiding rapid wear or damage caused by excessive pressure, thereby effectively extending the service life of the support rod 4 and ensuring the stability and reliability of the overall system.

[0042] In one embodiment, please refer to [specific example]. Figure 1 , Figure 2 and Figure 3 The drive assembly includes a connecting rod fixedly mounted on one side of the support slide 6, a push-pull cylinder 81 connected to the connecting rod, and a support base 811 for mounting the push-pull cylinder 81. The connecting rod is located on the right-angled side of the support slide 6, and the mounting bracket 3 has a through hole adapted to the connecting rod, which effectively ensures the stability of the connection between the connecting rod and the support slide 6 and facilitates the guidance of the moving direction of the connecting rod through the through hole. The telescopic end of the push-pull cylinder 81 is connected to the connecting rod, and the fixed seat of the push-pull cylinder 81 is fixedly connected to the support base 811. The support base 811 is fixedly connected to the mounting bracket 3. By cooperating with the through hole on the mounting bracket 3, the connection stability between the connecting rod and the support slide 6 is effectively ensured, and the moving direction of the connecting rod can be guided through the through hole. The telescopic end of the push-pull cylinder 81 is connected to the connecting rod, and the fixed seat is fixed to the support seat 811. The support seat 811 is fixedly connected to the mounting bracket 3. This structural design allows the telescopic movement of the push-pull cylinder 81 to be transmitted through the connecting rod, driving the support slide 6 to move horizontally in a predetermined direction, thereby achieving precise control and movement of the support slide 6. Specifically, when the push-pull cylinder 81 extends, the connecting rod also moves in the corresponding direction along the through hole on the mounting bracket 3, directly pushing the support slide 6 to move synchronously; conversely, when the push-pull cylinder 81 retracts, the support slide 6 moves in the opposite direction.

[0043] In one embodiment, please refer to [specific example]. Figure 4To guide the support rod 4 during movement, a guide groove 40 is provided on the outer periphery of the support rod 4, and a guide protrusion 51 is provided in the inner cavity of the guide sleeve 5 and adapted to the guide groove 40. The guide protrusion 51 is fixedly connected to the inner wall of the guide sleeve 5. By providing the guide groove 40 on the outer periphery of the support rod 4 and the guide protrusion 51 adapted to the guide groove 40 in the inner cavity of the guide sleeve 5, efficient guidance of the support rod 4 during movement is achieved. The fixed connection between the guide protrusion 51 and the inner wall of the guide sleeve 5 ensures the stability of the structure. When the support rod 4 moves up and down, the guide groove 40 and the guide protrusion 51 cooperate with each other and play a complementary role. This not only effectively prevents the support rod 4 from deviating or tilting during movement, but also ensures that it moves smoothly and accurately along the predetermined path, improving the operating efficiency and reliability of the entire system.

[0044] In this embodiment, during use, the fixed base 1 provides stable basic support, the support frame 2 is fixed on the base and connected to the support arm 21 by a hinge, so that the support arm 21 can be adjusted at an angle relative to the support frame 2.

[0045] When the angle of the support arm 21 needs to be adjusted, when the push-pull cylinder 81 extends, the connecting rod also moves in the corresponding direction along the through hole on the mounting bracket 3, directly pushing the support slide 6 to move synchronously; conversely, when the push-pull cylinder 81 retracts, the support slide 6 moves in the opposite direction. During this process, the support slide 6 moves horizontally along the slide rail 9 under the action of the drive component. At the same time, the inclined surface of the support slide 6 contacts the pulley 7, pushing the pulley 7 to move in the slide groove 61. Since the slide groove 61 is tangent to the inner wall of the pulley 7 and is set with the same curvature, it ensures that the movement direction of the pulley 7 is effectively guided, thereby achieving the purpose of adjusting the height of the support rod 4 and the angle of the support arm 21.

[0046] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A crane boom with a load-bearing support base, characterized in that: It includes a fixed base (1), a support frame (2) fixedly disposed on one side of the upper end face of the fixed base (1), a support arm (21) hinged to the support frame (2), and a load-bearing support member disposed between the support frame (2) and the support arm (21); The bearing support includes a mounting frame (3) fixedly connected to the support frame (2), a support rod (4) slidably connected to the upper end of the mounting frame (3) and connected to the support arm (21), a guide sleeve (5) fixedly mounted on the mounting frame (3) and adapted to the support rod (4), a support spring disposed on the outer periphery of the support rod (4), an adjustment component disposed at the other end of the support rod (4), and a drive component for driving the adjustment component.

2. A crane boom with a load-bearing support as described in claim 1, characterized in that: The adjustment assembly includes a slide rail (9) slidably disposed on the inner side of the lower end face of the mounting bracket (3), a support slide (6) slidably connected to the slide rail (9), a pulley (7) disposed on the end of the support rod (4) away from the support arm (21) and a slide groove (61) disposed on the support slide (6) and adapted to the pulley (7). The slide rail (9) is fixedly connected to the mounting bracket (3).

3. A crane boom with a load-bearing support as described in claim 2, characterized in that: The support slide (6) is configured as a right-angled triangle structure, and the inclined surface of the support slide (6) is set relative to the pulley (7).

4. A crane boom with a load-bearing support as described in claim 3, characterized in that: The inner wall of the groove (61) is tangential to the outer side of the pulley (7), and the inner wall of the groove (61) has the same curvature as the inclined surface of the support slide (6).

5. A crane boom with a load-bearing support as described in claim 3, characterized in that: One end of the support spring (41) is fixedly connected to the lower end face of the guide sleeve (5), and the other end of the support spring (41) is fixedly connected to the end of the support rod (4) away from the support arm (21).

6. A crane boom with a load-bearing support as described in claim 2, characterized in that: The drive assembly includes a connecting rod fixedly disposed on one side of the support slide (6), a push-pull cylinder (81) connected to the connecting rod, and a support seat (811) for mounting the push-pull cylinder (81). The connecting rod is disposed on the right-angle side of the support slide (6), and the mounting bracket (3) is provided with a through hole adapted to the connecting rod.

7. A crane boom with a load-bearing support as described in claim 6, characterized in that: It also includes a guide groove (40) disposed on the outer periphery of the support rod (4) and a guide protrusion (51) disposed in the inner cavity of the guide sleeve (5) and adapted to the guide groove (40), wherein the guide protrusion (51) is fixedly connected to the inner wall of the guide sleeve (5).

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