Flexible pipe winding prevention mechanism of telescopic structure, telescopic supporting leg and overhead working truck

Abstract

The utility model discloses a flexible pipe winding prevention mechanism of a telescopic structure, a telescopic supporting leg and an overhead working truck. The flexible pipe winding prevention mechanism of the telescopic structure comprises a movable support, a limiting piece and a fixed support which are connected in sequence, and the flexible pipe penetrates through the limiting piece from the movable support and then is connected to the second element. One end of the movable bracket is connected to the first element, is movably connected to the limiting piece and can longitudinally move in the limiting piece; the limiting piece is movably connected to the fixing support. The fixing support is provided with a guide groove corresponding to the limiting piece, and the limiting piece is contained in the guide groove and can longitudinally move along the guide groove. The fixed bracket is connected to the second element; when the telescopic structure fully stretches, the movable support, the limiting piece and the fixed support are unfolded, and when the telescopic structure fully retracts, the movable support, the limiting piece and the fixed support retract to be overlapped with one another. The limiting piece is used for limiting the up-down and left-right movement of the hose, and the freely movable part of the hose can be effectively prevented from moving and winding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a telescopic structure hose winding prevention mechanism, telescopic support leg and aerial work platform truck. BACKGROUND

[0002] The aerial work platform truck is a special vehicle for transporting workers and equipment to the site and performing aerial work. The telescopic support leg structure is provided in the aerial work platform truck, which can realize horizontal telescoping and vertical telescoping.

[0003] The telescopic support leg generally has a hydraulic oil hose inside. The hydraulic oil hose moves with the reciprocating of the horizontal telescopic support leg. During the movement, the hydraulic oil hose moves up and down, left and right, and is wound and accumulated in the telescopic support leg cavity, thereby damaging the hydraulic oil hose.

[0004] To solve this problem, the patent with the patent number CN118083879A and the name "Telescopic support leg structure and aerial work platform truck" describes a solution. A part of the hydraulic oil hose is fixed on the guide bracket to reduce the movable stroke of the hydraulic oil hose and to alleviate the winding problem of the hydraulic oil hose. However, it is found in practice that this solution does not completely solve the winding problem of the hydraulic oil hose. A part of the hydraulic oil hose can still move freely, thereby causing movement and winding. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the purpose of the present utility model is to provide a telescopic structure hose winding prevention mechanism, telescopic support leg and aerial work platform truck which can better prevent hose winding.

[0006] The technical solution provided by the present utility model is as follows:

[0007] A telescopic structure hose winding prevention mechanism, the telescopic structure comprising a first element and a second element which is longitudinally telescopic and is in sliding connection with the first element, and a hose having two ends fixed on the first element and the second element respectively, the telescopic structure hose winding prevention mechanism comprising a movable bracket, a limiting piece and a fixed bracket connected in sequence, so that the hose passes through the limiting piece from the movable bracket and is connected to the second element; the movable bracket is used for fixing the hose, one end of the movable bracket is connected to the first element and is movably connected to the limiting piece, and the movable bracket can move longitudinally in the limiting piece; the limiting piece is movably connected to the fixed bracket and is used for limiting the up-down and left-right movement of the hose passing through the limiting piece; the fixed bracket forms a guide rail for guiding the longitudinal movement of the limiting piece; the fixed bracket is connected to the second element; when the telescopic structure is fully extended, the movable bracket, the limiting piece and the fixed bracket are unfolded, and when the telescopic structure is fully retracted, the movable bracket, the limiting piece and the fixed bracket are retracted to overlap with each other.

[0008] Preferably, the hose comprises a fixed section and a movable section, the fixed section is relatively fixed in position during the telescopic structure telescoping, the movable section is freely movable during the telescopic structure telescoping, the length of the movable support is equal to or slightly less than the length of the fixed section, and the limiting member accommodates at least a part of the movable section.

[0009] Preferably, the hose comprises a fixed section, a movable section and a return section connected in sequence, the fixed section is relatively fixed in position during the telescopic structure telescoping, the movable section is freely movable during the telescopic structure telescoping, the length of the movable support is equal to the length of the fixed section, and the length of the limiting member is equal to the length of the movable section.

[0010] Preferably, the movable support is provided with a first pin hole at one end for connecting a first element, and the movable support is movably connected to the first element by inserting a pin into the first pin hole; the fixed support is provided with a second pin hole at one end close to the limiting member, and the fixed support is movably connected to a second element by inserting a pin into the second pin hole.

[0011] Preferably, the movable support is provided with a limiting block at one end close to the limiting member, and the limiting member is provided with a sliding block at one end close to the movable support corresponding to the limiting block, and the movement stroke of the movable support relative to the limiting member is limited by the cooperation of the limiting block and the sliding block.

[0012] Preferably, the fixed support is provided with a guide groove corresponding to the limiting member, the limiting member is accommodated in the guide groove and can move longitudinally along the guide groove; the fixed support is provided with a channel on both sides in the longitudinal direction, and the limiting member is provided with an embedding structure on both sides corresponding to the channel, and the movement stroke of the limiting member relative to the fixed support is limited by the cooperation of the embedding structure and the channel.

[0013] Preferably, the limiting member is a rectangular tube, and the guide groove is a U-shaped guide groove, forming a guide rail for guiding the longitudinal movement of the rectangular tube.

[0014] A telescopic support leg comprises a horizontal fixed support leg, a horizontal movable support leg, a vertical support leg, a horizontal support leg oil cylinder, a vertical support leg oil cylinder and a hydraulic oil pipe; the horizontal movable support leg and the horizontal fixed support leg are slidably connected and can longitudinally telescope, the vertical support leg is fixed to the horizontal movable support leg; the cylinder rod of the horizontal support leg oil cylinder is fixed to the horizontal fixed support leg, and the cylinder barrel is fixed to the horizontal movable support leg and follows the horizontal movable support leg to telescope back and forth; the vertical support leg oil cylinder is fixed to the vertical support leg; the hydraulic oil pipe extends from the horizontal fixed support leg, passes through the horizontal movable support leg and enters the vertical support leg, is connected to the vertical support leg oil cylinder, and comprises a hydraulic oil movable rubber tube extending from the horizontal fixed support leg and connected to the horizontal movable support leg; the telescopic support leg is provided with a telescopic structure anti-hose winding mechanism as described above, and the horizontal fixed support leg, the horizontal movable support leg and the hydraulic oil movable rubber tube are respectively a first element, a second element and a hose in the telescopic structure anti-hose winding mechanism.

[0015] Preferably, the hydraulic oil pipe further comprises a hydraulic oil hard pipe, a hydraulic oil fixed rubber pipe, the hydraulic oil hard pipe is connected with the hydraulic oil movable rubber pipe at one end close to the horizontal fixed support and connected with the vertical support oil cylinder at the other end close to the vertical support through the hydraulic oil fixed rubber pipe.

[0016] The aerial work platform comprises the telescopic support leg as described above.

[0017] Compared with the prior art, the telescopic structure anti-hose winding mechanism, the telescopic support leg and the aerial work platform have the following beneficial effects. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 FIG. 4 is a structural schematic view of the telescopic structure anti-hose winding mechanism in a full extension state according to the present application.

[0020] Figure 2 FIG. 5 is a partial enlarged view of the structure between the movable support and the limiting piece in the telescopic structure anti-hose winding mechanism shown in FIG. 4. Figure 1

[0021] Figure 3 FIG. 6 is a partial enlarged view of the structure between the limiting piece and the fixed support in the telescopic structure anti-hose winding mechanism shown in FIG. 4. Figure 1

[0022] Figure 4 FIG. 7 is a structural schematic view of the telescopic structure anti-hose winding mechanism in a full extension state according to the present application. Figure 1

[0023] Figure 5 FIG. 8 is a structural schematic view of the telescopic support leg (without the telescopic structure anti-hose winding mechanism) to which the telescopic structure anti-hose winding mechanism shown in FIG. 4 is applied. Figure 1

[0024] Figure 6 FIG. 9 is a structural schematic view of the telescopic support leg in a full extension state according to the present application. Figure 5 FIG. 10 is a structural schematic view of the telescopic support leg in a full extension state according to the present application.​​​​

[0025] Figure 7 for Figure 5 The diagram shows the structure with the telescopic outrigger in a semi-extended state.

[0026] Figure 8 for Figure 5 The diagram shows the structure with the telescopic outriggers in a fully retracted state. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0031] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0032] As Figures 1 to 8 shown in the utility model embodiment, a telescopic structure anti-hose winding mechanism is provided, which can be applied to the telescopic supporting legs of an aerial work platform. Of course, it can also be applied to the telescopic structure of other products. The telescopic structure comprises a first element and a second element which is longitudinally telescopic and is in sliding connection with the first element. The two ends of the hose are fixed on the first element and the second element respectively.

[0033] As Figures 5 to 8 shown in the utility model embodiment, a telescopic structure anti-hose winding mechanism is provided, which can be applied to the telescopic supporting legs of an aerial work platform. Of course, it can also be applied to the telescopic structure of other products. The telescopic structure comprises a first element and a second element which is longitudinally telescopic and is in sliding connection with the first element. The two ends of the hose are fixed on the first element and the second element respectively.

[0034] The hydraulic oil pipe comprises a hydraulic oil movable rubber pipe 51, a hydraulic oil hard pipe 52 and a hydraulic oil fixed rubber pipe 53. The hydraulic oil movable rubber pipe 51 extends from the horizontal fixed supporting leg 1 and is connected to the horizontal movable supporting leg 2. The two ends of the hydraulic oil hard pipe 52 are adjacent to the two ends of the horizontal movable supporting leg 2. The end close to the horizontal fixed supporting leg 1 is connected to the hydraulic oil movable rubber pipe 51, and the end close to the vertical supporting leg 3 is connected to the vertical supporting leg oil cylinder through the hydraulic oil fixed rubber pipe 53.

[0035] The horizontal fixed supporting leg 1, the horizontal movable supporting leg 2 and the hydraulic oil movable rubber pipe 51 are respectively the first element, the second element and the hose in the telescopic structure anti-hose winding mechanism. In the following description, these three elements are named as the horizontal fixed supporting leg 1, the horizontal movable supporting leg 2 and the hydraulic oil movable rubber pipe 51. However, it can be understood that the horizontal fixed supporting leg 1, the horizontal movable supporting leg 2 and the hydraulic oil movable rubber pipe 51 are actually a specific form of the first element, the second element and the hose respectively. These three elements can be named as the first element, the second element and the hose respectively, especially when the telescopic structure anti-hose winding mechanism is applied to other products, the latter is more appropriate.

[0036] As Figures 1 to 8As shown, the telescopic support legs are provided with telescopic structure anti-hose winding mechanisms 6. The telescopic structure anti-hose winding mechanisms 6 comprise sequentially connected movable supports 61, limiting members 62 and fixed supports 63, so that the hydraulic oil movable hose 51 is connected to the horizontal movable support leg 2 after passing through the limiting members 62 from the movable supports 61. The movable supports 61 are used for fixing the hoses (in this embodiment, the hoses are fixed by pipe clamps 610), one end of which is connected to the horizontal fixed support leg 1 and movably connected to the limiting members 62 and can move longitudinally in the limiting members 62. The limiting members 62 are movably connected to the fixed supports 63 and are used for limiting the up-down and left-right movement of the hydraulic oil movable hose 51 passing through the limiting members 62. The fixed supports 63 form guide rails for guiding the longitudinal movement of the limiting members 62. The fixed supports 63 are connected to the horizontal movable support leg 2. In this way, when the telescopic structure is fully extended, the movable supports 61, the limiting members 62 and the fixed supports 63 are unfolded, and when the telescopic structure is fully retracted, the movable supports 61, the limiting members 62 and the fixed supports 63 are retracted to overlap with each other. In this embodiment, the telescopic structure anti-hose winding mechanisms 6 limit the up-down and left-right movement of the hydraulic oil movable hose 51 by the limiting members 62, which can effectively prevent the movable part of the hydraulic oil movable hose 51 from moving and winding freely, and the limiting members 62 can move in the fixed supports 63 and overlap with the fixed supports 63, allowing the hydraulic oil movable hose 51 to move forward and backward without affecting the telescopic operation of the telescopic structure.

[0037] In this embodiment, the hydraulic oil movable hose 51 comprises sequentially connected fixed sections 511, movable sections 512 and winding sections 513. The fixed sections 511 are relatively fixed in position during the telescopic operation of the telescopic structure, the movable sections 512 can move freely during the telescopic operation of the telescopic structure, the length of the movable supports 61 is equal to or slightly smaller than the length of the fixed sections 511, and the limiting members 62 accommodate at least a part of the movable sections 512, so that at least a part of the movable sections 512 can be limited in the limiting members 62 to reduce the movement and winding. Preferably, the length of the movable supports 61 is equal to the length of the fixed sections 511, and the length of the limiting members 62 is equal to the length of the movable sections 512, so that the movable sections 512 can be more limited in the limiting members 62 to more effectively prevent the hydraulic oil movable hose 51 from moving and winding.

[0038] In this embodiment, one end of the movable supports 61 for connecting the horizontal fixed support leg 1 is provided with a first pin hole 611, a pin is inserted into the first pin hole 611 to movably connect the movable supports 61 to the horizontal fixed support leg 1, and the movable supports 61 can swing up and down in the horizontal fixed support leg 1. One end of the fixed supports 63 close to the limiting members 62 is provided with a second pin hole 631, a pin is inserted into the second pin hole 631 to movably connect the fixed supports 63 to the horizontal movable support leg 2.

[0039] In the embodiment, the movable support 61 is provided with a limiting block 612 at one end close to the limiting member 62, and the limiting member 62 is provided with a sliding block 622 at one end close to the movable support 61, corresponding to the limiting block 612, and the movable support 61 is limited in movement relative to the limiting member 62 by the limiting block 612 and the sliding block 622.

[0040] In the embodiment, the fixed support 63 is provided with a guide groove 632 corresponding to the limiting member 62, in which the limiting member 62 is accommodated and can move longitudinally along the guide groove 632. The fixed support 63 is further provided with a groove 632 on both sides in the longitudinal direction, and the limiting member 62 is provided with an embedded structure on both sides corresponding to the groove 632, which limits the movement of the limiting member 62 relative to the fixed support 63 by cooperating with the groove 632. In the embodiment, the embedded structure includes a protruding shaft 623 fixed to the outer side of the side wall of the limiting member 62. Of course, in other embodiments, the embedded structure can also be other structures.

[0041] In the embodiment, the limiting member 62 is a rectangular tube, and the guide groove 632 is a U-shaped guide groove, forming a guide rail for guiding the longitudinal movement of the rectangular tube. Of course, in other embodiments, the limiting member 62 can be other structures (such as an arc-shaped tube, or other structures except for a tubular structure, as long as it can limit the up-down and left-right movement of the hydraulic oil movable rubber tube 51), and the shape of the guide groove 632 can also correspond to the limiting member 62 (such as a half-arc shape with an upper opening corresponding to an arc-shaped tube).

[0042] The utility model embodiment further provides a kind of aerial work platform truck, including telescopic outrigger as described above.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown in the text, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic anti-tangle hose mechanism, the telescopic structure comprising a first element and a second element slidably connected to the first element and capable of longitudinal extension and retraction, wherein both ends of the hose are respectively fixed to the first element and the second element, characterized in that, The telescopic structure prevents the hose from winding, and comprises a movable support, a limiting member and a fixed support connected in sequence, so that the hose is connected to the second element after passing through the limiting member from the movable support; the movable support is used for fixing the hose, one end of which is connected to the first element and movably connected to the limiting member and can move longitudinally in the limiting member; the limiting member is movably connected to the fixed support and is used for limiting the up-down and left-right movement of the hose passing through the limiting member; the fixed support forms a guide rail for guiding the longitudinal movement of the limiting member; the fixed support is connected to the second element; when the telescopic structure is fully extended, the movable support, the limiting member and the fixed support are unfolded, and when the telescopic structure is fully retracted, the movable support, the limiting member and the fixed support are retracted to overlap with each other.

2. The retracting structure anti-hose winding mechanism according to claim 1, wherein The hose comprises a fixed section and a movable section, the fixed section is relatively fixed in position during the telescopic movement of the telescopic structure, and the movable section can freely move during the telescopic movement of the telescopic structure, the length of the movable support is equal to or slightly smaller than the length of the fixed section, and the limiting member accommodates at least a part of the movable section.

3. The retracting structure anti-hose winding mechanism according to claim 1, wherein The hose comprises a fixed section, a movable section and a winding section connected in sequence, the fixed section is relatively fixed in position during the telescopic movement of the telescopic structure, and the movable section can freely move during the telescopic movement of the telescopic structure, the length of the movable support is equal to the length of the fixed section, and the length of the limiting member is equal to the length of the movable section.

4. The retracting structure anti-hose winding mechanism according to claim 1, wherein One end of the movable support for connecting the first element is provided with a first pin hole, and the movable support is movably connected to the first element by inserting a pin into the first pin hole; one end of the fixed support close to the limiting member is provided with a second pin hole, and the fixed support is movably connected to the second element by inserting a pin into the second pin hole.

5. The retracting structure anti-hose winding mechanism according to claim 1, wherein One end of the movable support close to the limiting member is provided with a limiting block, and one end of the limiting member close to the movable support is provided with a sliding block corresponding to the limiting block, and the movement stroke of the movable support relative to the limiting member is limited by the cooperation of the limiting block and the sliding block.

6. The retracting structure anti-hose winding mechanism according to claim 1, wherein The fixed support is provided with a guide groove corresponding to the limiting member, the limiting member is accommodated in the guide groove and can move longitudinally along the guide groove; the fixed support is provided with a channel on both sides in the longitudinal direction, and the limiting member is provided with an embedded structure corresponding to the channel on both sides, and the movement stroke of the limiting member relative to the fixed support is limited by the cooperation of the embedded structure and the channel.

7. The retracting structure anti-hose winding mechanism according to claim 6, wherein The limiting member is a rectangular tube, and the guide groove is a U-shaped guide groove, forming a guide rail for guiding the longitudinal movement of the rectangular tube.

8. A retractable leg characterized in that, The telescopic support leg comprises a horizontal fixed support leg, a horizontal movable support leg, a vertical support leg, a horizontal support leg oil cylinder, a vertical support leg oil cylinder, and a hydraulic oil pipe; the horizontal movable support leg is longitudinally telescopic with the horizontal fixed support leg through sliding connection; the vertical support leg is fixed on the horizontal movable support leg; the cylinder rod of the horizontal support leg oil cylinder is fixed on the horizontal fixed support leg, and the cylinder barrel is fixed on the horizontal movable support leg and follows the horizontal movable support leg to telescopically extend and retract; the vertical support leg oil cylinder is fixed on the vertical support leg; the hydraulic oil pipe extends from the horizontal fixed support leg, passes through the horizontal movable support leg, and enters the vertical support leg, and is connected to the vertical support leg oil cylinder, and comprises a hydraulic oil movable rubber pipe extending from the horizontal fixed support leg and connected to the horizontal movable support leg; the telescopic support leg is provided with the telescopic structure anti-hose winding mechanism as claimed in any one of claims 1 to 7; the horizontal fixed support leg, the horizontal movable support leg, and the hydraulic oil movable rubber pipe are respectively the first element, the second element, and the hose in the telescopic structure anti-hose winding mechanism.

9. The retractable leg of claim 8, wherein, The hydraulic oil pipe further comprises a hydraulic oil hard pipe and a hydraulic oil fixed rubber pipe; the two ends of the hydraulic oil hard pipe are adjacent to the two ends of the horizontal movable support leg, one end close to the horizontal fixed support leg is connected to the hydraulic oil movable rubber pipe, and the other end close to the vertical support leg is connected to the vertical support leg oil cylinder through the hydraulic oil fixed rubber pipe.

10. An aerial work platform, characterized in that The telescopic support leg comprises the telescopic support leg as claimed in claim 8 or 9.

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