Lazy arm sidewise bending adjusting mechanism and crane
The boom lateral bending adjustment mechanism, which incorporates limit and adjustment components, solves the problem of poor versatility in existing boom lateral bending adjustment mechanisms, enabling convenient adjustment of lateral bending and stable boom operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-28
AI Technical Summary
The existing boom side bending adjustment mechanism has poor versatility and requires the replacement of sliders of different thicknesses for adjustment, which leads to inconvenience in operation and difficulty in maintenance.
The boom lateral bending adjustment mechanism, which employs a limiting component and an adjusting component, moves within the mounting hole, causing the limiting component to apply pressure to the inner boom section, thereby adjusting the relative position of the inner and outer boom sections and achieving convenient lateral bending adjustment.
It improves the ease of operation and versatility of boom lateral bending adjustment, reduces maintenance costs, and ensures boom stability and adjustment accuracy.
Smart Images
Figure CN224172341U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crane technology, specifically relating to a boom side bending adjustment mechanism and a crane. Background Technology
[0002] In the existing technology, when adjusting the lateral bend of the boom, it is usually necessary to replace the slider with one of different thicknesses to act as the boom lateral bend adjustment mechanism to adjust the amount of lateral bend of the boom. Therefore, it is often necessary to prepare adjustment pads or sliders of various thicknesses. In actual operation, this is not convenient, especially in subsequent maintenance work. When dealing with vehicles of the same model but from different orders, the thickness of the adjustment pads or sliders is different, resulting in poor versatility and making maintenance and replacement difficult. Utility Model Content
[0003] The purpose of this utility model is to provide a boom side-bending adjustment mechanism and a crane, thereby solving the technical problem of poor versatility of existing boom side-bending adjustment mechanisms.
[0004] To achieve the above objectives, this utility model provides a boom lateral bending adjustment mechanism. The boom includes an outer boom section and an inner boom section. The outer boom section has a mounting hole, and the inner boom section is nested inside the outer boom section. The boom lateral bending adjustment mechanism includes:
[0005] Limiting components;
[0006] An adjustment assembly is installed in a mounting hole. The adjustment assembly includes an adjustment body. The adjustment body has a countersunk hole on the side facing the inner arm for accommodating a limiting assembly. The adjustment body can move axially within the mounting hole and drive the limiting assembly to apply a pressing force to the inner arm to adjust the relative position of the inner arm and the outer arm.
[0007] In an embodiment of this utility model, the outer peripheral wall of the adjusting component body is threadedly engaged with the inner wall surface of the mounting hole.
[0008] In an embodiment of this utility model, the adjusting component body is provided with an opening groove extending radially, the opening of the opening groove facing the inner wall surface of the mounting hole. The adjusting component body is also provided with a through hole extending axially along the adjusting component body, the through hole communicating with the opening groove. The boom lateral bending adjustment mechanism also includes a locking component, which is inserted into the through hole. Tightening or releasing the locking component is used to lock or unlock the adjusting component body and the outer boom.
[0009] In an embodiment of this utility model, the limiting component includes a fastener and a slider. One side of the slider is in close contact with the bottom of the countersunk hole, and the other side extends out of the countersunk hole and abuts against the side of the inner arm facing the outer arm. An open groove is provided on the side of the slider facing the inner arm, and a fixing hole is provided at the bottom of the open groove. One end of the fastener is located in the open groove, and the other end passes through the fixing hole and is inserted into the body of the adjusting component.
[0010] In embodiments of this utility model, the adjusting body, fastener, and slider are coaxially arranged.
[0011] In an embodiment of this utility model, a protrusion for the body of the limiting adjustment component is also provided on the inner wall of the mounting hole, and the protrusion is provided on the side near the inner arm.
[0012] In an embodiment of this utility model, an adjustment groove is provided on the side of the adjustment component body away from the countersunk hole for the insertion of an external tightening component. The external tightening component is used to adjust the relative position of the adjustment component body and the mounting hole.
[0013] In the embodiments of this utility model, the body of the adjusting component is made of alloy material.
[0014] In an embodiment of this utility model, the outer arm includes a drive arm body and an arm head disposed away from the drive end of the drive arm body. There are multiple mounting holes, which are symmetrically arranged around the center of the arm head.
[0015] In an embodiment of this utility model, a crane is also provided, including the boom side bending adjustment mechanism as described above.
[0016] Through the above technical solutions, the boom bending adjustment mechanism and crane provided by the embodiments of this utility model have the following beneficial effects:
[0017] The boom lateral bending adjustment mechanism described in this application is typically installed on a boom, which includes an outer boom section and an inner boom section. The outer boom section has a mounting hole, and the inner boom section is nested within the outer boom section. The boom lateral bending adjustment mechanism includes a limiting component and an adjusting component. The adjusting component is installed within the mounting hole and includes an adjusting body. The adjusting body has a countersunk hole on the side facing the inner boom section to accommodate the limiting component. The adjusting body can move axially within the mounting hole, thereby driving the limiting component to apply pressure to the inner boom section, thus adjusting the relative position of the inner and outer boom sections. Using the boom lateral bending adjustment mechanism in this embodiment, when it is necessary to adjust the lateral bending of the inner boom section, it is only necessary to drive the adjusting body towards the inner boom section and ensure that the limiting component can apply pressure to the inner boom section, thereby changing the relative position of the inner and outer boom sections and adjusting the lateral bending of the inner boom section. Compared with the adjustment mechanisms in the prior art, this method is more convenient to operate and has better versatility.
[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:
[0020] Figure 1 This is a schematic diagram of the structure of the outer and inner arm sections of the present invention from one perspective.
[0021] Figure 2 This is a schematic diagram of the outer and inner arm joints of the present invention from another perspective.
[0022] Figure 3 This is a partial enlarged view of the boom lateral bending adjustment mechanism in this utility model, in conjunction with the outer boom section and the inner boom section;
[0023] Figure 4 This is a schematic diagram of the boom bending adjustment mechanism according to this utility model from one perspective.
[0024] Figure 5 This is a structural schematic diagram of the boom bending adjustment mechanism according to this utility model from another perspective.
[0025] Explanation of reference numerals in the attached figures
[0026] 11 Adjusting component body 22 Slider
[0027] 111 Countersunk Hole 221 Open Groove
[0028] 112 Opening slot 3 Locking element
[0029] 113 Through Hole 10 Mounting Hole
[0030] 114 Adjustment groove 101 Protrusion
[0031] 115 Fixing hole 20 Outer arm
[0032] 116 Locking unit 201 Drive arm body
[0033] 2 Limiting component 202 Arm head
[0034] 21 Fasteners 30 Inner Arm Detailed Implementation
[0035] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0036] The boom side bending adjustment mechanism and crane according to the present invention are described below with reference to the accompanying drawings.
[0037] like Figure 1 and Figure 2 As shown, a boom lateral bending adjustment mechanism is proposed. In this embodiment, the boom lateral bending adjustment mechanism is typically installed on the boom, which includes an outer boom section 20 and an inner boom section 30. The outer boom section 20 has a mounting hole 10, and the inner boom section 30 is nested within the outer boom section 20. The boom lateral bending adjustment mechanism includes a limiting component 2 and an adjusting component. The adjusting component is installed within the mounting hole 10 and includes an adjusting body 11. The adjusting body 11 has a countersunk hole 111 on the side facing the inner boom section 30 for accommodating the limiting component 2. The adjusting body 11 can move axially within the mounting hole 10 to drive the limiting component 2 to apply a compressive force to the inner boom section 30, thereby adjusting the relative position of the inner boom section 30 and the outer boom section 20.
[0038] Using the boom lateral bending adjustment mechanism in this embodiment, when it is necessary to adjust the lateral bending amount of the inner boom section 30, it is only necessary to drive the adjusting body 11 to move closer to the inner boom section 30, and ensure that the adjusting body 11 can drive the limiting component 2 to apply pressure to the inner boom section 30, thereby changing the relative position of the inner boom section 30 and the outer boom section 20, thus realizing the adjustment of the boom lateral bending amount. Compared with the adjustment mechanism in the prior art, the boom lateral bending adjustment mechanism of this application is more convenient to operate and has better versatility. Furthermore, the boom often includes multiple nested boom sections, and any two adjacent boom sections include the outer boom section 20 and the inner boom section 30. The relative position of the outer boom section 20 and the inner boom section 30 can be adjusted by the boom lateral bending adjustment mechanism, thereby further expanding the lateral bending adjustment amount of the boom. In addition, the limit component 2 and the adjustment component can be installed as a whole into the mounting hole 10 from the outside of the arm head 202. Replacement can be completed without disassembling other parts, making maintenance convenient and solving the problem of cumbersome operation caused by the need to prepare material adjustment pads or various thicknesses of sliders 22 when adjusting the lateral bending amount in the prior art.
[0039] In this embodiment, the outer peripheral wall of the adjusting body 11 is threadedly engaged with the inner wall of the mounting hole 10, resulting in good installation stability. The adjusting body 11 is not easy to slip out of the mounting hole 10, ensuring that the limiting component 2 can stably abut against the inner arm 30, so as to ensure that the inner arm 30 is not easy to shake.
[0040] like Figure 3 and Figure 4As shown, in this embodiment, the adjusting body 11 has a radially extending opening groove 112, the opening of which faces the inner wall of the mounting hole 10. The adjusting body 11 also has a through hole 113 extending axially along the adjusting body 11, which communicates with the opening groove 112. The boom lateral bending adjustment mechanism also includes a locking member 3, which is inserted into the through hole 113. Tightening or releasing the locking member 3 is used to lock or unlock the adjusting body 11 and the outer boom 20.
[0041] like Figure 4 As shown, the adjusting body 11 is provided with a locking part 116. By tightening the locking member 3 on the adjusting body 11, the locking part 116 undergoes elastic deformation and bends to the right. As a result, the width of the opening groove 112 narrows, and the locking part 116 presses against the threaded protrusion on the inner wall of the mounting hole 10, ensuring that the adjusting body 11 can be securely locked on the outer arm 20, achieving mechanical anti-loosening. Next, if it is necessary to unlock the adjusting body 11 from the outer arm 20, the locking member 3 can be loosened. The elastically deformed locking part 116 will move to the left and gradually return to its initial state. The locking part 116 will leave the threaded protrusion on the inner wall of the mounting hole 10, thereby unlocking the adjusting body 11 from the outer arm 20, and the adjusting body 11 can move and adjust along the axis of the mounting hole 10. In the initial state, the width of the opening groove 112 is consistent from top to bottom. The locking member 3 uses a screw as in the prior art. The inner wall of the through hole 113 is threaded to the outer peripheral wall of the locking member 3 to stably adjust the elastic deformation of the locking part 116.
[0042] like Figure 3 As shown, in this embodiment, the limiting component 2 includes a fastener 21 and a slider 22. One side of the slider 22 is in close contact with the bottom of the countersunk hole 111, and the other side extends out of the countersunk hole 111 and abuts against the side of the inner section arm 30 facing the outer section arm 20. The slider 22 has an open groove 221 on the side facing the inner section arm 30. A fixing hole 115 is provided at the bottom of the open groove 221. One end of the fastener 21 is located in the open groove 221, and the other end passes through the fixing hole 115 and is inserted into the adjusting body 11.
[0043] The fixing hole 115 provides a mechanical limit for the slider 22, effectively preventing structural damage caused by shearing of the fastener 21 during the extension and retraction of the crane boom. The fastener 21 can be a screw, as is common in the prior art. The inner wall of the fixing hole 115 is threaded to the outer peripheral wall of the fastener 21, stably locking the slider 22 onto the adjusting body 11. Since the slider 22 is a wear part, during subsequent use, the adjusting body 11 can be driven to move towards the inner boom 30, ensuring the slider 22 remains pressed against the inner boom 30, thus compensating for the wear of the slider 22. Furthermore, if the slider 22 is severely worn, the fastener 21 can be removed and replaced with a new slider 22, reducing the maintenance cost of the boom side-bending adjustment mechanism.
[0044] like Figure 3 As shown, in this embodiment, the adjusting body 11, the fastener 21 and the slider 22 are coaxially arranged, which avoids the adverse consequences caused by axis misalignment and ensures that the slider 22 can stably abut against the outer peripheral wall of the inner arm 30, preventing the inner arm 30 from shaking randomly.
[0045] like Figure 3 As shown, in this embodiment, the inner wall of the mounting hole 10 is further provided with a protrusion 101 for limiting the adjustment body 11. The protrusion 101 is located on the side near the inner arm 30 to limit the movement range of the adjustment body 11 and prevent the adjustment body 11 from directly contacting the inner arm 30 and causing damage to the inner arm 30 when the slider 22 is worn out. Furthermore, when the fastener 21 and slider 22 are not installed, the adjustment body 11, which is threaded into the mounting hole 10, will not contact the inner arm 30 and interfere, further preventing damage to the inner arm 30.
[0046] like Figure 3 and Figure 5 As shown, in this embodiment, the side of the adjusting member body 11 facing away from the countersunk hole 111 is also provided with an adjusting groove 114 for inserting an external tightening member. The external tightening member is used to adjust the relative position of the adjusting member body 11 and the mounting hole 10, so that the adjusting member body 11 can move along the axis of the mounting hole 10, making the adjustment operation convenient. Furthermore, the adjusting groove 114 is hexagonal, which facilitates efficient adjustment after the external tightening member is inserted.
[0047] In this embodiment, the adjusting body 11 is made of alloy material, which has good plasticity and appropriate strength, ensuring that the locking member 3 can press the adjusting body 11 against the thread on the inner wall of the mounting hole 10, so as to achieve a stable lock between the adjusting body 11 and the outer arm 20. Specifically, the adjusting body 11 can be made of steel such as GB 35 steel or GB 45 steel.
[0048] like Figure 1As shown, in this embodiment, the outer boom 20 includes a drive boom body 201 and a boom head 202 located away from the drive end of the drive boom body 201. Multiple mounting holes 10 are arranged symmetrically around the center of the boom head 202. Multiple boom lateral bending adjustment mechanisms are also provided, each corresponding to one of the mounting holes 10. By using multiple boom lateral bending adjustment mechanisms to jointly adjust the lateral bending amount of the inner boom 30, the adjustment accuracy of the lateral bending amount is further improved, better meeting the lifting requirements of the boom. In this embodiment, the boom head 202 is provided with four mounting holes 10, corresponding to four boom lateral bending adjustment mechanisms, to stably adjust the bending amount of the boom. The number of mounting holes 10 can be adjusted according to actual needs.
[0049] In this embodiment, a crane is also proposed, including the boom lateral bending adjustment mechanism as described above. Since the crane employs all embodiments of the boom lateral bending adjustment mechanism, it also possesses all the beneficial effects brought about by the boom lateral bending adjustment mechanism, which will not be described in detail here.
[0050] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A boom lateral bending adjustment mechanism, the boom comprising an outer boom section (20) and an inner boom section (30), the outer boom section (20) having a mounting hole (10), the inner boom section (30) being nested within the outer boom section (20), characterized in that, The boom lateral bending adjustment mechanism includes: Limiting component (2); An adjustment assembly is installed in the mounting hole (10). The adjustment assembly includes an adjustment body (11). The adjustment body (11) has a countersunk hole (111) on the side facing the inner arm (30) for accommodating the limiting assembly (2). The adjustment body (11) can move axially in the mounting hole (10) and drive the limiting assembly (2) to apply a pressing force to the inner arm (30) to adjust the relative position of the inner arm (30) and the outer arm (20).
2. The boom lateral bending adjustment mechanism according to claim 1, characterized in that, The outer peripheral wall of the adjusting body (11) is threadedly engaged with the inner wall of the mounting hole (10).
3. The boom lateral bending adjustment mechanism according to claim 2, characterized in that, The adjusting body (11) has a radially extending opening groove (112) with the opening of the opening groove (112) facing the inner wall of the mounting hole (10). The adjusting body (11) also has a through hole (113) extending axially along the adjusting body (11) and the through hole (113) communicating with the opening groove (112). The boom side bending adjustment mechanism also includes a locking member (3), which is inserted into the through hole (113). Tightening or releasing the locking member (3) is used to lock or unlock the adjusting body (11) and the outer boom (20).
4. The boom lateral bending adjustment mechanism according to claim 1, characterized in that, The limiting component (2) includes a fastener (21) and a slider (22). One side of the slider (22) is close to the bottom of the countersunk hole (111), and the other side extends out of the countersunk hole (111) and abuts against the side of the inner arm (30) facing the outer arm (20). The slider (22) has an open groove (221) on the side facing the inner arm (30). A fixing hole (115) is provided at the bottom of the open groove (221). One end of the fastener (21) is located in the open groove (221), and the other end passes through the fixing hole (115) and is inserted into the adjusting body (11).
5. The boom lateral bending adjustment mechanism according to claim 4, characterized in that, The adjusting body (11), the fastener (21), and the slider (22) are coaxially arranged.
6. The boom lateral bending adjustment mechanism according to any one of claims 1 to 5, characterized in that, The inner wall of the mounting hole (10) is also provided with a protrusion (101) for limiting the adjustment body (11), and the protrusion (101) is provided on the side close to the inner arm (30).
7. The boom lateral bending adjustment mechanism according to any one of claims 1 to 5, characterized in that, The adjusting body (11) is provided with an adjusting groove (114) on the side away from the countersunk hole (111) for inserting an external tightening member. The external tightening member is used to adjust the relative position of the adjusting body (11) and the mounting hole (10).
8. The boom lateral bending adjustment mechanism according to any one of claims 1 to 5, characterized in that, The body of the adjusting component (11) is made of alloy material.
9. The boom lateral bending adjustment mechanism according to any one of claims 1 to 5, characterized in that, The outer arm (20) includes a drive arm body (201) and an arm head (202) disposed away from the drive end of the drive arm body (201). There are multiple mounting holes (10), and the multiple mounting holes (10) are arranged symmetrically around the center of the arm head (202).
10. A crane, characterized in that, Includes the boom side bending adjustment mechanism according to any one of claims 1 to 9.