A slider device and a telescopic arm comprising the same

Abstract

The application provides a slider device and a telescopic arm comprising the same. The slider device comprises a mounting base, a sealing bag, a first slider and a second slider arranged on the mounting base. The mounting base comprises a first connecting section and a second connecting section connected with each other. The first connecting section is used for being connected with a side end surface of a mechanical arm. The second connecting section extends into the mechanical arm and is arranged in abutment with an inner wall of the mechanical arm. The first slider and the second slider are connected with each other to form a slider structure in abutment with the second connecting section. An inner wall of the slider structure is arranged in an arc shape. Both ends of the slider structure are connected with the mounting base through the sealing bag. The slider structure formed by the first slider and the second slider is arranged to realize self-adaptive abutment between a slider round corner and an arm frame round corner, increase a slider contact area, and thus improve an arm frame carrying capacity.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery structure technology, and relates to a slider device and a telescopic arm containing the slider. Background Technology

[0002] In the field of construction machinery, the L-shaped slider and telescopic boom are a common combination structure. This structure utilizes the rounded corners of the boom housing to contact the rounded corners of the slider, effectively improving the load-bearing capacity of the boom. However, due to factors such as bending precision and steel plate hardness, the actual gap between the L-shaped slider and the boom housing deviates significantly from the design gap. This results in the slider's rounded corners failing to effectively align with the boom's rounded corners, severely reducing the slider's contact area and thus greatly diminishing the telescopic boom's motion stability and operational reliability.

[0003] There are two main methods for adjusting the gap of L-shaped sliders: one is to add or remove flat shims on the underside of the L-shaped slider to adjust the gap. This method causes the rounded corner contact of the L-shaped slider to become a flat contact, which cannot effectively utilize the advantage of the rounded corner bearing capacity of the L-shaped slider. The other method is to add or remove L-shaped shims on the underside of the L-shaped slider to adjust the gap. This method retains the advantage of the rounded corner bearing capacity of the L-shaped slider. However, in practice, due to manufacturing errors or slight torsion of the boom housing, the gap between the bottom and side of the L-shaped slider is often inconsistent. The linkage between the bottom and side of the L-shaped slider can cause the L-shaped shims to not be properly inserted, thus affecting the adjustment of the gap.

[0004] Therefore, there is an urgent need for a new type of L-shaped adjustable slider device and telescopic arm that can effectively adjust the gap between the L-shaped slider and the boom housing. Summary of the Invention

[0005] The present invention aims to provide a slider device and a telescopic arm containing the same, which effectively reduces the impact of clearance on the movement stability of the telescopic arm and improves the load-bearing capacity and operational reliability of the boom.

[0006] This invention provides a slider device disposed between the outer boom frame and the inner boom frame of a telescopic boom; it includes a mounting base and a sealing bladder, a first slider, and a second slider disposed on the mounting base; The mounting base includes a first connecting section and a second connecting section that are connected to each other; the first connecting section is used to connect to the side end face of the outer boom; the second connecting section extends into the outer boom and is fitted against the inner wall of the outer boom. The first slider and the second slider are connected to each other to form a slider structure that fits into the second connecting segment, and the inner wall of the slider structure is set as an arc-shaped surface; Both ends of the slider structure are connected to the mounting base through sealing bladders.

[0007] Furthermore, both the first slider and the second slider are provided with at least one piece; When there are two or more first sliders and second sliders, the two or more second sliders are connected in sequence, and the two or more first sliders are respectively located on the outside of the two or more second sliders.

[0008] Furthermore, the first slider and the second slider are flexibly connected by rubber or hinges.

[0009] Furthermore, the mounting base includes a base body and an oil inlet mounting hole, an oil passage, a support rib, and a first mounting groove disposed on the base body; The oil inlet mounting hole is provided with at least two pieces that are spaced apart from each other, and an oil inlet component is installed on each of the two oil inlet mounting holes. Oil passages are provided between the support rib and the inner wall of the base body, and between the support rib and the first mounting groove. The oil passage connects the oil inlet mounting hole and the first mounting groove; The supporting ribs are used to maintain the shape of the slider structure when it is in the retracted state.

[0010] Furthermore, a second mounting groove is provided on the first slider, and the second mounting groove is provided in the horizontal direction; The sealing bladder includes a first sealing section, a third connecting section, and a second sealing section connected in sequence; the first sealing section is installed in a first mounting groove to achieve a sealed connection with the mounting base; the second sealing section is installed in a second mounting groove to achieve a sealed connection with the first slider.

[0011] Furthermore, at least one lubricating ball valve is also provided on the slider structure; The lubrication ball valve is used to input or output lubricating oil into or out of the slider structure.

[0012] Furthermore, an X-shaped oil passage is provided on the slider structure, which is connected to the lubrication ball valve. Lubricating oil is input into the X-shaped oil passage through the lubrication ball valve to achieve self-lubrication of the slider structure.

[0013] As a further aspect of the present invention, the present invention also provides a telescopic boom, including an outer boom frame, an inner boom frame, and a slider device as described above. The outer boom and the inner boom are nested together; The slider device is installed on the end of the outer boom away from the inner boom, and the slider device is located between the outer boom and the inner boom to improve the stability of the inner boom when it slides inside the outer boom and to improve the overall load-bearing capacity of the telescopic boom.

[0014] Furthermore, a flange end plate is provided on the end face of the outer boom away from the inner boom, and the slider device is fixed to the flange end plate by bolts.

[0015] Furthermore, the slider device is provided with four sets of components that correspond one-to-one with the four inner rounded corners of the outer boom.

[0016] Furthermore, the telescopic boom also includes a hydraulic pressure monitoring component; The oil pressure monitoring component is fixedly installed on the outer surface of the boom frame and is used to monitor and regulate the inlet and outlet oil pressure of the lubrication ball valve and the oil inlet component.

[0017] Furthermore, the oil pressure monitoring assembly includes a first sensor group for monitoring the inlet and outlet oil pressure of the lubrication ball valve, a second sensor group for monitoring the inlet and outlet oil pressure of the oil inlet assembly, a first balancing valve group for regulating the inlet and outlet oil pressure of the lubrication ball valve, and a second balancing valve group for regulating the inlet and outlet oil pressure of the oil inlet assembly.

[0018] Compared with the prior art, the present invention has the following beneficial effects: (1) The slider device provided by the present invention is disposed between the outer boom and the inner boom of the telescopic boom. By setting a slider structure formed by the interconnection of the first slider and the second slider, the slider fillet and the boom fillet are adaptively fitted, the slider contact area is increased, thereby improving the boom load-bearing capacity.

[0019] (2) The slider device provided by the present invention, by setting an oil passage and an oil inlet component on the mounting base, and by inputting or outputting hydraulic oil into the oil passage, adjusts the oil pressure in the oil passage, thereby realizing the lifting or retraction of the slider structure, thereby realizing the adjustment of the gap between the slider structure and the inner boom, thereby improving the overall motion stability and working reliability of the telescopic boom.

[0020] (3) The slider device provided by the present invention can achieve adaptive fitting between the slider round corner and the boom round corner by using the flexible connection of the arc strip slider structure to form a slider structure, thereby increasing the slider contact area and improving the boom load-bearing capacity.

[0021] (4) The slider device provided by the present invention realizes real-time monitoring and remote adjustment of the internal oil pressure of the slider by using the oil pressure monitoring module, thereby reducing the cost of slider disassembly and reassembly caused by boom clearance adjustment. (5) The slider device provided by the present invention, by designing the slider structure and designing the slider structure as an L-shaped structure, the adjustable design can reduce the influence of manufacturing factors on slider clearance adjustment, improve the versatility of the slider, reduce assembly problems caused by boom torsion or manufacturing precision, and reduce boom rework costs.

[0022] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is an exploded isometric view of a telescopic arm according to an embodiment of the present invention; Figure 2 yes Figure 1 Front view schematic diagram of the middle slider device; Figure 3 yes Figure 2 Front view sectional view; Figure 4 It is a picture Figure 2 Front sectional view of the mounting base in the middle; Figure 5 This is a side view schematic diagram of a telescoping device in its initial state according to an embodiment of the present invention; Figure 6 This is a side cross-sectional view of an embodiment of the present invention when the telescoping mechanism is in its initial state; Figure 7 This is a side view schematic diagram of a telescopic device in a compressed state according to an embodiment of the present invention; Figure 8 This is a side cross-sectional view of a telescopic device in a compressed state according to an embodiment of the present invention.

[0024] in: 1. Outer boom; 2. Inner boom; 3. Hydraulic pressure monitoring module; 4. Sliding device; 4.1. Mounting base; 4.1.1. Oil inlet mounting hole; 4.1.2. Oil passage; 4.1.3. Support rib; 4.1.4. First mounting groove; 4.2. Rubber sealing bladder; 4.3. First sliding block; 4.4. Second sliding block; 4.5. Lubricating ball valve; 4.6. Oil inlet device. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of the present invention clearer and easier to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings of the present invention are all in a simplified form and use non-precise proportions, and are only used to facilitate and clearly assist in illustrating the implementation of the present invention; the "several" mentioned in the present invention are not limited to the specific number shown in the examples in the accompanying drawings; the orientations or positional relationships indicated by terms such as "front," "middle," "rear," "left," "right," "up," "down," "top," "bottom," and "center" mentioned in the present invention are all based on the orientations or positional relationships shown in the accompanying drawings of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, nor should they be construed as limitations on the present invention.

[0026] Example: See Figure 1 As shown, the telescopic boom provided by the present invention includes an outer boom frame 1, an inner boom frame 2, and a slider device 4; The outer boom 1 and the inner boom 2 are nested together; specifically, the inner boom 2 is located inside the outer boom 1. The slider device 4 is installed on the end of the outer boom 1 away from the inner boom 2, and the slider device 4 is located between the outer boom 1 and the inner boom 2. It is used to improve the stability of the inner boom 2 when it slides inside the outer boom 1 and to improve the overall load-bearing capacity of the telescopic boom.

[0027] Preferably, a flange end plate is provided on the end face of the outer boom 1 away from the inner boom 2, and the slider device 4 is fixed to the flange end plate by bolts.

[0028] Preferably, the slider device 4 is configured as a segmented structure; specifically, the slider device 4 is configured with four groups corresponding to the four inner rounded corners of the outer boom 1, and each group of slider devices 4 is configured as an L-shaped structure.

[0029] As a further solution to this embodiment, see Figures 2 to 4 As shown, the single-slider device 4 includes a mounting base 4.1 and a sealing bladder 4.2, a first slider 4.3 and a second slider 4.4 disposed on the mounting base 4.1; The mounting base 4.1 includes a first connecting section and a second connecting section that are connected to each other; the first connecting section is used to connect to the side end face of the telescopic arm; the second connecting section extends into the telescopic arm and is fitted against the inner wall of the telescopic arm. The first slider 4.3 and the second slider 4.4 are connected to each other to form a slider structure that fits into the second connecting section, and the inner wall of the slider structure is set as an arc-shaped surface; Both ends of the slider structure are connected to the mounting base 4.1 via sealing bladder 4.2.

[0030] Preferably, at least one of the first slider 4.3 and the second slider 4.4 is provided; When there are two or more first sliders 4.3 and second sliders 4.4, the two or more second sliders 4.4 are connected in sequence, and the two or more first sliders 4.3 are respectively located on the outside of the two or more second sliders 4.4. Specifically, in this embodiment, two of each of the first slider 4.3 and the second slider 4.4 are provided, and the two second sliders 4.4 are connected to each other to form a central slider; the two first sliders 4.3 are respectively provided at both ends of the central slider.

[0031] More preferably, the first slider 4.3 and the second slider 4.4, as well as the two second sliders 4.4, are flexibly connected by rubber or hinges.

[0032] Preferably, the mounting base 4.1 includes a base body and an oil inlet mounting hole 4.1.1, an oil passage 4.1.2, a support rib 4.1.3, and a first mounting groove 4.1.4 disposed on the base body; The oil inlet mounting hole 4.1.1 is provided with at least two parts that are spaced apart from each other, and an oil inlet assembly 4.6 is installed on each of the two oil inlet mounting holes 4.1.1; Oil passages 4.1.2 are provided between the support rib 4.1.3 and the inner wall of the base body, and between the support rib 4.1.3 and the first mounting groove 4.1.4; The oil passage 4.1.2 connects the oil inlet mounting hole 4.1.1 and the first mounting groove 4.1.4; The supporting rib 4.1.3 is used to maintain the shape of the slider structure when it is in the retracted state, so as to prevent the slider structure from being unable to be used normally due to severe deformation. External hydraulic oil is input or output into the oil passage 4.1.2 through the oil inlet component 4.6. By adjusting the oil pressure of the hydraulic oil in the oil passage 4.2, the slider structure is raised or retracted, thereby achieving adaptive adjustment of the gap between the slider structure and the outer radius of the inner boom 2. This effectively reduces the impact of the gap on the stability of the telescopic boom movement and improves the boom's load-bearing capacity and operational reliability.

[0033] Preferably, a second mounting groove is provided on the first slider 4.3, and the second mounting groove is provided in the horizontal direction; The sealing bladder 4.2 includes a first sealing section, a third connecting section, and a second sealing section connected in sequence; the first sealing section is installed in a first mounting groove to achieve a sealed connection with the mounting base 4.1; the second sealing section is installed in a second mounting groove to achieve a sealed connection with the first slider 4.3.

[0034] Preferably, at least one lubricating ball valve 4.5 is also provided on the slider structure; The lubrication ball valve 4.5 is used to input or output lubricating oil into the slider structure to achieve self-lubrication of the slider structure.

[0035] In a further preferred embodiment, the slider structure is provided with an X-shaped oil passage that is interconnected with the lubrication ball valve 4.5. Lubricating oil is input into the X-shaped oil passage through the lubrication ball valve 4.5 to achieve self-lubrication of the slider structure.

[0036] As a further embodiment, the telescopic boom also includes a hydraulic monitoring component 3; The oil pressure monitoring component 3 is fixedly installed on the outer surface of the outer boom 1 and is used to monitor and regulate the inlet and outlet oil pressure of the lubrication ball valve 4.5 and the oil inlet component 4.6.

[0037] Preferably, the oil pressure monitoring component 3 includes a first sensor group for monitoring the inlet and outlet oil pressure of the lubrication ball valve 4.5, a second sensor group for monitoring the inlet and outlet oil pressure of the oil inlet component 4.6, a first balancing valve group for adjusting the inlet and outlet oil pressure of the lubrication ball valve 4.5, and a second balancing valve group for adjusting the inlet and outlet oil pressure of the oil inlet component 4.6.

[0038] As a further solution to this embodiment, see Figure 5 and Figure 6 As shown, when the slider structure is in its initial state (i.e., in its retracted state), there is a gap between the slider and the boom. This gap varies in size due to factors such as manufacturing precision and steel plate hardness. If the actual gap between the slider structure and the inner boom housing deviates significantly from the design gap, the slider's rounded corners will not effectively align with the boom's rounded corners, severely reducing the slider's contact area and thus greatly diminishing the telescopic boom's movement stability and operational reliability.

[0039] As a further solution to this embodiment, see Figure 7 and Figure 8 As shown, when the slider structure is in a compressed state (i.e., the slider structure is in an ejected state), the slider device is filled by adjusting the oil pressure. The first slider and the second slider are lifted by the oil pressure and adaptively fit with the outer radius of the inner boom. At this time, the gap is 0 (the gap can also be adaptively adjusted by controlling the oil pressure as needed).

[0040] This invention, through hydraulic drive and flexible splicing design of arc-shaped slider, can effectively solve the problem of difficulty in adjusting the gap between the existing slider structure and the inner boom, effectively reduce the impact of the gap on the stability of the telescopic boom movement, and improve the boom's load-bearing capacity and operational reliability.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A slider device, disposed between the outer boom frame (1) and the inner boom frame (2) of a telescopic boom; characterized in that, Includes a mounting base (4.1) and a sealing bladder (4.2), a first slider (4.3), and a second slider (4.4) disposed on the mounting base (4.1). The mounting base (4.1) includes a first connecting section and a second connecting section that are connected to each other; the first connecting section is used to connect with the side end face of the outer boom (1); the second connecting section extends into the outer boom (1) and is fitted against the inner wall of the outer boom (1); The first slider (4.3) and the second slider (4.4) are connected to each other to form a slider structure that fits into the second connecting section, and the inner wall of the slider structure is set as an arc surface; Both ends of the slider structure are connected to the mounting base (4.1) through sealing bladders (4.2).

2. The slider device according to claim 1, characterized in that, The first slider (4.3) and the second slider (4.4) are each provided with at least one piece; When there are two or more of the first slider (4.3) and the second slider (4.4), the two or more second sliders (4.4) are connected in sequence, and the two or more first sliders (4.3) are respectively set on the outside of the two or more second sliders (4.4).

3. The slider device according to claim 1, characterized in that, The first slider (4.3) and the second slider (4.4) are flexibly connected by rubber or hinges.

4. The slider device according to any one of claims 1-3, characterized in that, The mounting base (4.1) includes a base body and an oil inlet mounting hole (4.1.1), an oil passage (4.1.2), a support rib (4.1.3), and a first mounting groove (4.1.4) provided on the base body. The oil inlet mounting hole (4.1.1) is provided with at least two parts that are spaced apart from each other, and an oil inlet assembly (4.6) is installed on each of the two oil inlet mounting holes (4.1.1). Oil passages (4.1.2) are provided between the support rib (4.1.3) and the inner wall of the base body, and between the support rib (4.1.3) and the first mounting groove (4.1.4). The oil passage (4.1.2) connects the oil inlet mounting hole (4.1.1) and the first mounting groove (4.1.4). The supporting rib (4.1.3) is used to maintain the shape of the slider structure when it is in the retracted state.

5. The slider device according to claim 4, characterized in that, A second mounting groove is provided on the first slider (4.3), and the second mounting groove is provided in the horizontal direction; The sealing bladder (4.2) includes a first sealing section, a third connecting section and a second sealing section connected in sequence; the first sealing section is installed in the first mounting groove to achieve a sealed connection with the mounting base (4.1); the second sealing section is installed in the second mounting groove to achieve a sealed connection with the first slider (4.3).

6. The slider device according to claim 5, characterized in that, At least one lubricating ball valve (4.5) is also provided on the slider structure. The lubrication ball valve (4.5) is used to input or output lubricating oil into the slider structure.

7. The slider device according to claim 6, characterized in that, An X-shaped oil passage is provided on the slider structure, which is connected to the lubrication ball valve (4.5). Lubricating oil is input into the X-shaped oil passage through the lubrication ball valve (4.5) to achieve self-lubrication of the slider structure.

8. A telescopic boom, characterized in that, It includes an outer boom (1), an inner boom (2), and a slider device as described in any one of claims 5-7; The outer boom (1) and the inner boom (2) are nested together; The slider device is installed on the end of the outer boom (1) away from the inner boom (2), and the slider device is located between the outer boom (1) and the inner boom (2) to improve the stability of the inner boom (2) when it slides inside the outer boom (1) and to improve the overall load-bearing capacity of the telescopic boom.

9. The telescopic arm according to claim 8, characterized in that, A flange end plate is provided on the end face of the outer boom (1) away from the inner boom (2), and the slider device is fixed to the flange end plate by bolts.

10. The telescopic arm according to claim 9, characterized in that, The slider device is provided with four sets of components that correspond one-to-one with the four inner rounded corners of the outer boom (1).

11. The telescopic boom according to any one of claims 8-10, characterized in that, It also includes an oil pressure monitoring component (3); The oil pressure monitoring component (3) is fixedly installed on the outer surface of the outer boom (1) and is used to monitor and regulate the inlet and outlet oil pressure of the lubrication ball valve (4.5) and the oil inlet component (4.6).

12. The telescopic arm according to claim 11, characterized in that, The oil pressure monitoring assembly (3) includes a first sensor group for monitoring the inlet and outlet oil pressure of the lubrication ball valve (4.5), a second sensor group for monitoring the inlet and outlet oil pressure of the oil inlet assembly (4.6), a first balancing valve group for adjusting the inlet and outlet oil pressure of the lubrication ball valve (4.5), and a second balancing valve group for adjusting the inlet and outlet oil pressure of the oil inlet assembly (4.6).

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