Telescopic arm

Abstract

The utility model relates to the technical field of mechanical engineering, in particular to a telescopic arm which can be widely applied to engineering mechanical equipment such as cranes, excavators and aerial work platforms so as to achieve flexible adjustment of the working range of the equipment. The telescopic arm comprises a first arm section and a second arm section, and further comprises a sliding block arranged between the first arm section and the second arm section, and the sliding block is in sliding fit with the second arm section; the fixing plate is arranged on the first arm section; the mounting hole is matched with the sliding block in shape, the mounting hole is formed in the first arm section, and the sliding block is embedded in the mounting hole and fixed through a fixing plate. The utility model at least solves the problem that the slide block cannot be mounted or is difficult to replace due to small adjustment gap between the arm sections.

Description

Technical Field

[0001] This invention relates to the field of mechanical engineering technology, specifically to a telescopic boom that can be widely used in engineering machinery equipment such as cranes, excavators, and aerial work platforms to achieve flexible adjustment of the equipment's working range. Background Technology

[0002] Telescopic booms are key components of many construction machinery equipment, their function being to extend and retract the working device of the equipment, thereby expanding the operating range of the equipment. Currently, telescopic boom structures on the market have some shortcomings in practical use.

[0003] For example, the sliding contact parts between the boom sections of traditional telescopic booms are prone to wear and jamming, which affects the smoothness of the boom's movement and its service life. Furthermore, the installation and fixing methods of existing telescopic booms' sliders are relatively complex, hindering later maintenance and replacement. In addition, the small contact area between the slider and boom section in some telescopic booms leads to excessive local pressure, further exacerbating wear problems. Moreover, some slider installations involve the slider being directly mounted to the boom with a nut embedded in it. Since the slider is made of ultra-high molecular weight polyethylene, the nut is prone to slippage during disassembly, making slider replacement inconvenient.

[0004] Therefore, it is necessary to design a new type of telescopic boom to solve the problems existing in the prior art and improve the performance and reliability of the telescopic boom. Utility Model Content

[0005] This application provides a telescopic boom that solves the problem of small adjustment gaps between boom sections and inability to install sliders in the prior art. By optimizing the sliding fit structure between boom sections and the installation method of sliders, the smoothness of telescopic boom movement is improved, wear is reduced, and later maintenance and replacement are facilitated.

[0006] This application provides a telescopic arm, including a first arm section and a second arm section, the telescopic arm further including:

[0007] A slider is disposed between the first arm segment and the second arm segment, and the slider is slidably engaged with the second arm segment;

[0008] A fixing plate, wherein the fixing plate is disposed on the first arm section; and,

[0009] A mounting hole matching the shape of the slider is provided on the first arm section, and the slider is fitted into the mounting hole and fixed by a fixing plate.

[0010] Furthermore, this application embodiment also discloses that the fixing plate is provided with a first bolt and a second bolt, and the fixing plate is fixedly installed on the outer wall of the first arm section by the first bolt.

[0011] Furthermore, embodiments of this application also disclose that the slider is a rectangular block or a T-shaped block, and its sliding surface contacts the second arm segment.

[0012] Furthermore, embodiments of this application also disclose that the fixing plate extends axially along the first arm section, and its surface is fixed by at least two first bolts.

[0013] Furthermore, embodiments of this application also disclose that a pressure plate is provided at the top of the slider.

[0014] Furthermore, embodiments of this application also disclose that the mounting holes are symmetrically opened on two opposite sidewalls of the first arm section.

[0015] Furthermore, embodiments of this application also disclose that at least two of the sliders are embedded in the mounting holes of each sidewall.

[0016] Furthermore, embodiments of this application also disclose that the slider is made of polytetrafluoroethylene or nylon material.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0018] 1. The surface contact method between the slider and the second arm section, as well as the use of materials with good self-lubricating properties, greatly reduces the frictional resistance during the extension and retraction process, enabling the second arm section to extend and retract smoothly relative to the first arm section, thereby improving the working efficiency of the equipment.

[0019] 2. Surface contact increases the contact area and reduces the pressure per unit area. At the same time, the use of polytetrafluoroethylene or nylon materials further improves wear resistance, effectively reducing wear on the boom and slider, and extending the service life of the telescopic boom.

[0020] 3. The installation method of the fixed plate and pressure plate makes the slider easy to disassemble and replace. During later maintenance, the slider can be inspected and repaired without complicated operations, reducing maintenance costs and time.

[0021] 4. The symmetrical distribution design of the mounting holes and sliders ensures that the second arm section is subjected to uniform force during extension and retraction, avoiding problems such as jamming and accelerated wear caused by uneven force distribution, and improving the movement stability of the telescopic arm.

[0022] 5. The pressure plate is installed on the slider to prevent the slider from deforming under force during adjustment.

[0023] 6. The slider clearance is adjusted by adjusting the second bolt. By adjusting the second bolt, the clearance between the slider and the arm section is adjusted. In this embodiment, the problem of inconvenient slider installation and disassembly is improved by eliminating the slider insert nut. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0025] In the diagram: 1. First arm section; 2. Second arm section; 3. Fixing plate; 4. First bolt; 5. Pressure plate; 6. Slider; 7. Second bolt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0027] A telescopic boom includes a first boom segment 1 and a second boom segment 2. The boom further includes: a slider 6 disposed between the first boom segment 1 and the second boom segment 2, the slider 6 slidingly engaging with the second boom segment 2; the slider 6 reduces friction during the extension and retraction of the second boom segment 2, thereby achieving smooth extension and retraction with low noise; a fixing plate 3 disposed on the first boom segment 1; and mounting holes matching the shape of the slider 6, the mounting holes being formed on the first boom segment 1, the slider 6 being fitted into the mounting holes and fixed by the fixing plate 3. The mounting holes are symmetrically formed on two opposite sidewalls of the first boom segment 1. At least two sliders are fitted into the mounting holes on each sidewall.

[0028] The fixing plate 3 is provided with a first bolt 4 and a second bolt 7. The fixing plate 3 is fixedly installed on the outer wall of the first arm section 1 by the first bolt 4.

[0029] The slider 6 is a rectangular block or a T-shaped block, and its sliding surface contacts the second arm section 2.

[0030] The fixing plate 3 extends axially along the first arm section 1, and its surface is fixed by at least two first bolts 4, generally one first bolt 4 is set on each of the four sides.

[0031] The top of the slider 6 is provided with a pressure plate 5.

[0032] The slider 6 is made of polytetrafluoroethylene or nylon.

[0033] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A telescopic arm comprising a first arm section (1) and a second arm section (2), characterized in that: The telescopic arm further comprises: a sliding block (6) arranged between the first arm section (1) and the second arm section (2), the sliding block (6) being in sliding cooperation with the second arm section (2); a fixing plate (3) arranged on the first arm section (1); and a mounting hole matching the shape of the sliding block (6), the mounting hole being formed on the first arm section (1), the sliding block (6) being embedded in the mounting hole and fixed by the fixing plate (3).

2. A telescopic arm according to claim 1, characterised in that: The fixing plate (3) is provided with a first bolt (4) and a second bolt (7), and the fixing plate (3) is fixedly arranged on the outer wall of the first arm section (1) by the first bolt (4).

3. The telescopic arm of claim 1, wherein: The sliding block (6) is a rectangular block or a T-shaped block, and a sliding surface of the sliding block (6) is in contact with the second arm section (2).

4. The telescopic arm of claim 2, wherein: The fixing plate (3) extends along the axial direction of the first arm section (1), and the surface of the fixing plate (3) is fixed by at least two first bolts (4).

5. The telescopic arm of claim 1, wherein: The top of the sliding block (6) is provided with a pressing plate (5).

6. The telescopic arm of claim 1, wherein: The mounting holes are symmetrically formed on the two opposite side walls of the first arm section (1).

7. A reach arm according to claim 6, wherein: At least two sliding blocks (6) are embedded in the mounting hole of each side wall.

8. A telescopic arm according to any one of claims 1 to 7, wherein: The sliding block (6) is made of polytetrafluoroethylene or nylon material.

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