Boom slide, boom assembly, and aerial device

Abstract

The utility model relates to high altitude operation machinery technical field discloses an arm support sliding block, arm support subassembly and high altitude operation machinery for arm support, arm support includes the outer section arm and inner section arm that nest setting in proper order, is equipped with mounting hole on the outer section arm, arm support sliding block includes sleeve pipe subassembly, support block and locking piece, sleeve pipe subassembly includes the outer sleeve pipe and inner sleeve pipe that nest setting in proper order along the radial, the outer sleeve pipe penetrates mounting hole and is connected with the inner wall surface of mounting hole, is equipped with the insertion slot on the inner sleeve pipe, and the open mouth of insertion slot sets up towards the inner section arm, support block inserts on the inner sleeve pipe, and one end of support block is located in insertion slot, and the other end stretches out from insertion slot and is used for abutting with the inner section arm, locking piece is set up on the outer wall surface of inner sleeve pipe and can limit the locking of inner sleeve pipe and outer sleeve pipe, solved the technical problem of the support block structure damage caused by locking piece direct contact locking with support block in the prior art, reduced the maintenance cost of support block.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, specifically relating to a boom slider, boom assembly, and aerial work machinery. Background Technology

[0002] In existing technologies, the support blocks installed between the inner and outer boom sections primarily serve an auxiliary support function due to space constraints and relatively low stress. These support blocks are typically non-metallic cylindrical threaded blocks with a low coefficient of friction. After the support blocks are installed on the outer boom section, locking fasteners are usually inserted to position them. Since the fasteners directly contact the support blocks, they are prone to structural damage. Furthermore, most fasteners prevent the support blocks from being reused after disassembly, resulting in high maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a boom slider, boom assembly, and aerial work machinery to solve the problem of support block structural damage caused by direct contact and locking of the fasteners with the support block in the prior art, and to reduce the maintenance cost of the support block.

[0004] To achieve the above objectives, this utility model provides a boom slider for a boom, the boom comprising an outer boom section and an inner boom section nested sequentially, the outer boom section having a mounting hole, and the boom slider comprising: The sleeve assembly includes an outer sleeve and an inner sleeve nested in a radial direction. The outer sleeve passes through the mounting hole and is connected to the inner wall of the mounting hole. The inner sleeve has an insertion groove with the opening facing the inner arm. A support block is inserted into the inner sleeve. One end of the support block is located in the insertion slot, and the other end extends out of the insertion slot and is used to abut against the inner arm. The locking device is fitted onto the outer peripheral wall of the inner sleeve and can limit and lock the inner sleeve and outer sleeve.

[0005] In an embodiment of this utility model, the outer sleeve and the inner sleeve are coaxially arranged, the inner wall surface of the outer sleeve is formed with an internal thread, and the outer peripheral wall of the inner sleeve is formed with an external thread that matches the internal thread on the outer sleeve.

[0006] In an embodiment of this utility model, the locking fastener is a ring structure and its inner wall surface is formed with an internal thread that matches the external thread of the inner sleeve.

[0007] In an embodiment of this utility model, multiple slots are provided at equal intervals along the circumferential direction on the outer peripheral wall of the locking fastener, and the multiple slots extend along the axial direction of the locking fastener.

[0008] In an embodiment of this utility model, the end of the inner sleeve away from the opening is also provided with a tightening protrusion, which protrudes in the direction away from the support block.

[0009] In an embodiment of this utility model, the support block includes a large-diameter portion and a small-diameter portion integrally connected. The small-diameter portion is inserted into the insertion slot and is interference-fitted with the inner wall surface of the insertion slot. The first axial end of the large-diameter portion is limited and abutted against the outer periphery of the opening of the insertion slot. The second axial end of the large-diameter portion has an abutting surface for abutting against the inner arm.

[0010] In an embodiment of this utility model, the large-diameter portion and the small-diameter portion are coaxially arranged, and a gap is left between the end of the small-diameter portion away from the large-diameter portion and the bottom of the insertion groove.

[0011] In an embodiment of this utility model, the support block is made of a wear-resistant material.

[0012] In an embodiment of this utility model, a boom assembly is also provided, comprising an outer boom section, an inner boom section, and a boom slider as described above, which are nested in sequence.

[0013] In an embodiment of this utility model, an aerial work platform is also provided, including the boom assembly described above.

[0014] Through the above technical solutions, the boom slider, boom assembly, and aerial work platform provided by the embodiments of this utility model have the following beneficial effects: The boom slider of this application is used on a boom, which includes an outer boom and an inner boom nested in sequence. The outer boom has a mounting hole. The boom slider includes a sleeve assembly, a support block, and a locking device. The sleeve assembly includes an outer sleeve and an inner sleeve nested in sequence along the radial direction. The outer sleeve passes through the mounting hole and is connected to the inner wall of the mounting hole. The inner sleeve has an insertion groove with its opening facing the inner boom. The support block is inserted into the inner sleeve, with one end of the support block located in the insertion groove and the other end extending out of the insertion groove and used to abut against the inner boom. The locking device is sleeved on the outer wall of the inner sleeve and can limit and lock the inner sleeve and the outer sleeve. This application employs a structure with inner and outer sleeves, and provides insertion slots on the inner sleeve for the support block to be inserted. Furthermore, locking fasteners are located on the outer wall of the inner sleeve, securing the inner and outer sleeves together. This avoids direct contact between the locking fasteners and the support block as in the prior art, solving the technical problem of support block structural damage caused by direct contact between the locking fasteners and the support block, and reducing the maintenance cost of the support block.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] 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: Figure 1 This is a schematic diagram of the boom structure according to the present invention; Figure 2 This is a schematic diagram of the structure of the boom slider and outer boom according to the present invention; Figure 3 This is a cross-sectional schematic diagram of the boom slider according to the present invention; Figure 4 This is a schematic diagram of the outer arm structure according to the present invention; Figure 5 This is a schematic diagram of the structure of the locking device according to this utility model.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] 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.

[0019] The boom slider, boom assembly, and aerial work machinery according to the present invention are described below with reference to the accompanying drawings.

[0020] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, a boom slider for a boom is proposed. The boom slider is used on the boom, which includes an outer boom 10 and an inner boom 20 nested in sequence. The outer boom 10 has a mounting hole 101. The boom slider includes a sleeve assembly, a support block 2, and a locking fastener 3. The sleeve assembly includes an outer sleeve 11 and an inner sleeve 12 nested in sequence along the radial direction. The outer sleeve 11 passes through the mounting hole 101 and is connected to the inner wall of the mounting hole 101. The inner sleeve 12 has an insertion groove 121. The opening of the insertion groove 121 faces the inner boom 20. The support block 2 is inserted into the inner sleeve 12. One end of the support block 2 is located in the insertion groove 121, and the other end extends out of the insertion groove 121 and is used to abut against the inner boom 20. The locking fastener 3 is sleeved on the outer wall of the inner sleeve 12 and can limit and lock the inner sleeve 12 and the outer sleeve 11. The outer sleeve 11 is fixed to the inner wall of the mounting hole 101, which provides good installation stability.

[0021] In this application, a structure with inner and outer sleeves 11 is adopted, and an insertion groove 121 is provided on the inner sleeve 12 for the support block 2 to be inserted. The locking fastener 3 is also provided on the outer wall surface of the inner sleeve 12. The inner sleeve 12 and the outer sleeve 11 are locked by the locking fastener 3, which avoids the situation where the locking fastener 3 and the support block 2 are in direct contact in the prior art. This solves the technical problem of damage to the support block 2 structure caused by the locking fastener 3 directly contacting the support block 2 for locking in the prior art, and reduces the maintenance cost of the support block 2.

[0022] like Figure 3 As shown, in this embodiment, the outer sleeve 11 and the inner sleeve 12 are coaxially arranged, which provides good stability. The inner wall surface of the outer sleeve 11 is formed with an internal thread, and the outer peripheral wall of the inner sleeve 12 is formed with an external thread that matches the internal thread on the outer sleeve 11. The outer sleeve 11 and the inner sleeve 12 are connected by a threaded connection, which makes disassembly and assembly convenient and can effectively ensure that the outer sleeve 11 and the inner sleeve 12 do not easily move relative to each other along the axial direction.

[0023] like Figure 2 As shown, in this embodiment, the locking fastener 3 is an annular structure with an internal thread on its inner wall surface that matches the external thread of the inner sleeve 12. By providing the locking fastener 3 with the internal thread, this application can further secure the outer sleeve 11 and the inner sleeve 12, preventing them from moving axially.

[0024] like Figure 2 and Figure 5 As shown, in this embodiment, multiple slots 31 are evenly spaced along the circumferential direction on the outer peripheral wall of the locking fastener 3, and all slots 31 extend along the axial direction of the locking fastener 3. Specifically, four slots 31 are provided on the outer peripheral wall of the locking fastener 3 in this application, which facilitates the use of external tools to tighten or loosen the locking fastener 3, thereby releasing the restriction between the outer sleeve 11 and the inner sleeve 12 and realizing convenient assembly and disassembly of the locking fastener 3. The number of slots 31 can be adjusted according to actual needs.

[0025] like Figure 2 and Figure 3 As shown, in this embodiment, the end of the inner sleeve 12 facing away from the opening is also provided with a tightening protrusion 122, which protrudes in the direction away from the support block 2. The tightening protrusion 122 provided in this application facilitates the tightening or disassembly of the inner sleeve 12 by the operator using special tools, so that the operator can easily assemble and disassemble the outer sleeve 11 and the inner sleeve 12.

[0026] like Figure 3As shown, in this embodiment, the support block 2 includes a large-diameter portion 21 and a small-diameter portion 22 integrally connected. The small-diameter portion 22 is inserted into the insertion groove 121 and is interference-fitted with the inner wall surface of the insertion groove 121. The first axial end of the large-diameter portion 21 is limited and abutted against the outer periphery of the opening of the insertion groove 121 to prevent it from being placed into the insertion groove 121. The second axial end of the large-diameter portion 21 has an abutting surface for abutting against the inner section arm 20 to prevent the inner section arm 20 from directly colliding with the outer section arm 10.

[0027] like Figure 1 As shown, the outer boom 10 in this application is provided with four mounting holes 101. Similarly, there are four boom sliders, each corresponding to one of the mounting holes 101, which serve as auxiliary support and guidance to ensure that the inner boom 20 and the outer boom 10 will not be damaged by collision due to direct contact. The number of mounting holes 101 and boom sliders can be adjusted according to actual needs.

[0028] like Figure 3 As shown, in this embodiment, the large diameter portion 21 and the small diameter portion 22 are coaxially arranged. A gap is left between the end of the small diameter portion 22 away from the large diameter portion 21 and the bottom of the insertion groove 121, so as to adapt to the small diameter portion 22 on the support block 2 of different sizes, which has good versatility. The certain gap in the insertion groove 121 can ensure a stable interference fit between the small diameter portion 22 and the insertion groove 121.

[0029] In this embodiment, the support block 2 is made of a wear-resistant material. Specifically, the support block 2 of this application can be made of materials such as high molecular weight polyethylene. It should be noted that since the support block 2 is in contact with the inner arm 20, the support block 2 must have wear resistance. The specific material selected for the support block 2 can be adjusted according to actual needs.

[0030] like Figure 1 As shown, in this embodiment, a boom assembly is also proposed, including an outer boom 10, an inner boom 20, and a boom slider as described above, which are nested sequentially. Since the boom assembly adopts all embodiments of the boom slider in this application, it also has all the beneficial effects of the boom slider, which will not be described in detail here.

[0031] In this embodiment, an aerial work platform is also proposed, including the boom assembly described above. Since the aerial work platform employs all embodiments of the boom assembly described in this application, it also possesses all the beneficial effects of the boom assembly, which will not be elaborated upon here. The aerial work platform may include, for example, an aerial work vehicle, which can utilize the boom assembly described in this application to effectively reduce the maintenance cost of the support block 2.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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. An arm support slider for an arm support, the arm support comprising an outer arm section (10) and an inner arm section (20) arranged in series, a mounting hole (101) being formed in the outer arm section (10), characterized in that, The boom slider includes: The sleeve assembly includes an outer sleeve (11) and an inner sleeve (12) nested in a radial direction. The outer sleeve (11) passes through the mounting hole (101) and is connected to the inner wall of the mounting hole (101). The inner sleeve (12) has an insertion groove (121) with the opening facing the inner arm (20). Support block (2) is inserted into the inner sleeve (12). One end of the support block (2) is located in the insertion groove (121), and the other end extends out of the insertion groove (121) and is used to abut against the inner arm (20). The locking device (3) is sleeved on the outer peripheral wall of the inner sleeve (12) and can limit and lock the inner sleeve (12) and the outer sleeve (11).

2. The cantilevered slider of claim 1, wherein, The outer sleeve (11) and the inner sleeve (12) are coaxially arranged. The inner wall surface of the outer sleeve (11) is formed with an internal thread, and the outer peripheral wall of the inner sleeve (12) is formed with an external thread that matches the internal thread on the outer sleeve (11).

3. The cantilevered slider of claim 2, wherein, The locking fastener (3) has a ring structure and an inner wall surface with an internal thread that matches the external thread of the inner sleeve (12).

4. The cantilevered slider of claim 3, wherein, The outer peripheral wall of the locking device (3) is provided with multiple slots (31) at equal intervals along the circumferential direction, and the multiple slots (31) extend along the axial direction of the locking device (3).

5. The spider shoe of any one of claims 1 to 4, wherein, The inner sleeve (12) is provided with a tightening protrusion (122) at the end away from the opening, and the tightening protrusion (122) protrudes in the direction away from the support block (2).

6. The spider shoe of any one of claims 1 to 4, wherein, The support block (2) includes an integrally connected large-diameter part (21) and a small-diameter part (22). The small-diameter part (22) is inserted into the insertion groove (121) and is interference-fitted with the inner wall surface of the insertion groove (121). The first axial end of the large-diameter part (21) is limited and abutted against the outer periphery of the opening of the insertion groove (121). The second axial end of the large-diameter part (21) has an abutting surface for abutting against the inner arm (20).

7. The cantilevered slider of claim 6, wherein, The large diameter portion (21) and the small diameter portion (22) are coaxially arranged, and a gap is left between the end of the small diameter portion (22) away from the large diameter portion (21) and the bottom of the insertion groove (121).

8. The spider shoe of any one of claims 1 to 4, wherein, The support block (2) is made of wear-resistant material.

9. An arm assembly, characterized by It includes an outer arm (10), an inner arm (20) arranged in a nested manner, and a boom slider according to any one of claims 1 to 8.

10. An aerial work platform, characterized in that Includes the boom assembly as described in claim 9.

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