Cable movable support of telescopic leg and crane

Abstract

The invention discloses a cable movable support of a telescopic leg and a crane in the technical field of in-vehicle cable arrangement, and aims to solve the problem that in the prior art, when the telescopic leg stretches out and draws back, a cable in the telescopic leg is prone to fatigue and being damaged due to friction. According to the cable movable support of the telescopic leg and the crane, the cable movable support comprises a telescopic structure formed by connecting a plurality of telescopic units, each telescopic unit comprises a first structural arm and a second structural arm, and the first structural arm and the second structural arm are rotationally connected through a first shaft; the first shaft is connected with a buckle, and the buckle is used for connecting a cable; the telescopic structure is fixed to the fixed supporting leg and the movable supporting leg, and when the movable supporting leg drives the telescopic structure to stretch out and draw back, the first structural arm and the second structural arm rotate. The cable is prevented from being scratched during stretching and retracting through the structure of the telescopic unit, stretching and retracting are controlled at multiple positions of the cable through the multiple buckles, large curvature change of the cable is avoided, and then the sheath of the cable is protected in the stretching and retracting process of the cable along with the telescopic leg.

Description

Technical Field

[0001] The invention relates to a cable movable bracket with telescopic legs and a crane, belonging to the technical field of cable arrangement in vehicles. Background Art

[0002] Before the crane is operated, the vehicle needs to be supported by the outriggers. The specific structure is to install the movable outriggers on the fixed outriggers, and the movable outriggers can make telescopic movements compared to the fixed outriggers. Some sensors and electrical devices are generally arranged in the movable outriggers, such as ground contact sensors and vertical electric cylinders. These components require cables for power supply and signal transmission. Some of these cables are high-voltage cables. When the cables lack support, the movable outriggers extend and retract the drive cables to straighten and irregularly reel, which can easily cause fatigue or friction cracking of the cable sheath. Summary of the invention

[0003] The purpose of the present application is to overcome the deficiencies in the prior art and to provide a cable movable bracket and crane with telescopic legs that can maintain a good linear posture of the cable when the cable follows the telescopic legs to perform telescopic movements to prevent fatigue or frictional rupture of the cable sheath.

[0004] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions: In a first aspect, the present application provides a cable movable bracket with telescopic legs, comprising: A telescopic structure formed by connecting a plurality of telescopic units, wherein the telescopic unit comprises a first structural arm and a second structural arm, and the first structural arm and the second structural arm are rotatably connected via a first axis; In at least one of the telescopic units, the first shaft is connected to a buckle, and the buckle is used to connect the cable; Two ends of the telescopic structure are respectively connected to a fixed leg and a movable leg. When the movable leg drives the telescopic structure to extend or retract, the first structural arm and the second structural arm rotate.

[0005] In some embodiments of the first aspect, the first structural arm in each telescopic unit is also rotationally connected to the second structural arm in an adjacent telescopic unit; the second structural arm in each telescopic unit is also rotationally connected to the first structural arm in an adjacent telescopic unit.

[0006] In some embodiments of the first aspect, the multiple telescopic units include a starting unit, and the first structural arm and the second structural arm of the starting unit are respectively rotatably connected to the fixed leg; or, the first structural arm and the second structural arm of the starting unit are respectively rotatably connected to the movable leg.

[0007] In some embodiments of the first aspect, the telescopic unit includes at least two symmetrical sub-units parallel to each other, a single symmetrical sub-unit includes a first structural arm and a second structural arm rotatably connected to each other, and adjacent symmetrical sub-units are spaced a certain distance apart and rotatably connected to the same first axis.

[0008] In some embodiments of the first aspect, the telescopic unit further includes a second axis, the second axis is respectively connected to adjacent symmetrical sub-units, and the second axis is used to synchronize telescopic actions of adjacent symmetrical sub-units.

[0009] In some embodiments of the first aspect, the buckle is located in the middle of adjacent symmetrical sub-units, and the cable is inserted into the buckle with a gap between the cable and the buckle.

[0010] In some embodiments of the first aspect, the telescopic unit also includes an anti-overlapping rod, which is connected to the first axis, and the anti-overlapping rod is located within the angle between the first structural arm and the second structural arm, and the anti-overlapping rod is used to prevent the angle between the first structural arm and the second structural arm from being less than a threshold.

[0011] In some embodiments of the first aspect, the telescopic structure is located inside the fixed leg and the movable leg.

[0012] In a second aspect, the present application further provides a crane, comprising a cable movable bracket for telescopic legs as described in any embodiment of the first aspect.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The movable cable bracket of the telescopic leg provided in the present application avoids scratches on the cable during telescopic extension and retraction through the structure of the telescopic unit, controls the telescopic extension and retraction at multiple positions of the cable through multiple buckles, thereby avoiding large curvature changes in the cable, and protecting the outer skin of the cable during the extension and retraction of the telescopic leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic structural diagram of interconnected telescopic units in a cable movable bracket of a telescopic leg provided in this embodiment; Figure 2 It is a structural schematic diagram of a telescopic unit in a cable movable bracket of a telescopic leg provided in this embodiment without a buckle; Figure 3 It is a structural schematic diagram of a telescopic unit in a cable movable bracket of a telescopic leg provided in this embodiment in which no buckle is provided; Figure 4 It is a schematic cross-sectional view of the structure of the telescopic leg provided in this embodiment after the cable movable bracket of the telescopic leg is deployed inside the telescopic leg and the telescopic leg is extended; Figure 5 is a schematic cross-sectional view of the structure of the telescopic leg provided in this embodiment when the cable movable bracket is deployed inside the telescopic leg and the telescopic leg is retracted; Figure 6 It is a schematic side view of the structure of the movable cable bracket of the telescopic leg provided in this embodiment after being deployed inside the telescopic leg; In the figure: 10. Telescopic structure; 1. Telescopic unit; 11. Starting unit; 1.1. First structural arm; 1.2. Second structural arm; 2.1, first axis; 2.2, buckle; 2.3, second axis; 2.4, anti-stack rod; 3. Cable; 4. Fix the legs; 5. Movable outriggers; 6. Vertical electric cylinder; 7. Horizontal electric cylinder. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of this application / this application to clearly and completely describe the technical solutions in the embodiments of this application / this application. Obviously, the described embodiments are only part of the embodiments of this application / this application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the application / this application and its application or use. Embodiment 1

[0017] This embodiment provides a movable cable bracket for a telescopic leg to solve the problem in the prior art that the internal cable 3 is easily damaged by fatigue and friction when the telescopic leg is extended or retracted.

[0018] refer to Figures 1 to 6 The cable movable bracket of the telescopic leg provided in this embodiment includes a telescopic structure 10 composed of a plurality of telescopic units 1. The telescopic movement of the telescopic structure 10 can be decomposed into the telescopic movement of the plurality of telescopic units 1, wherein the telescopic unit 1 includes a first structural arm 1.1 and a second structural arm 1.2, and the first structural arm 1.1 and the second structural arm 1.2 are rotationally connected via a first axis 2.1. When the first structural arm 1.1 and the second structural arm 1.2 rotate in different directions, the extension and shortening of the telescopic unit 1 can be achieved.

[0019] In at least one of the telescopic units 1, the first axis 2.1 is connected to the buckle 2.2, and the buckle 2.2 is used to connect the cable 3; the two ends of the telescopic structure 10 are respectively connected to the fixed leg 4 and the movable leg 5, and when the movable leg 5 drives the telescopic structure 10 to extend or retract, the first structural arm 1.1 and the second structural arm 1.2 rotate.

[0020] refer to Figure 2 and Figure 3 Not all telescopic units 1 in the telescopic structure 10 are provided with buckles 2.2. Those skilled in the art may provide buckles 2.2 on all telescopic units 1 as needed, or provide buckles 2.2 on only some of the telescopic units 1 at intervals of a certain number of telescopic units 1. The connection between adjacent telescopic units 1 can refer to Figure 1 As one example, refer to Figure 4 and Figure 5 , multiple telescopic units 1 are connected end to end to form a telescopic structure 10.

[0021] The telescopic leg is composed of a fixed leg 4 and a movable leg 5 connected to the fixed leg 4 by sliding and telescoping. The cable movable bracket of the telescopic leg provided in this embodiment is arranged on the inner wall or outer wall of the telescopic leg, wherein the two ends of the telescopic structure 10 are respectively fixed to the fixed leg 4 and the movable leg 5; Figures 4 to 6 , the cable 3 is sequentially passed through each buckle 2.2 in the telescopic structure 10, and a hanging arc is left for the cable 3 between adjacent buckles 2.2. One end of the cable 3 is connected to the vertical electric cylinder 6 in the movable leg 5, and the other end is passed through the fixed leg 4 to connect to the power system; when the horizontal electric cylinder 7 in the fixed leg 4 drives the movable leg 5 to extend from the fixed leg 4, the movable leg 5 pulls the telescopic structure 10 to extend, and the interval between the buckles 2.2 also becomes longer. Since the telescopic structure 10 is composed of a plurality of identical or similar telescopic units 1, each telescopic unit 1 is extended relatively evenly; in addition to being pulled out by the vertical electric cylinder 6, the cable 3 The cable 3 is connected to the telescopic structure 10 through a plurality of buckles 2.2, so the telescopic structure 10 also uniformly assists in stretching the cable 3 at various positions of the cable 3 during the extension process, and the suspension arc is gradually flattened; when the horizontal electric cylinder 7 in the fixed leg 4 drives the movable leg 5 to retract into the fixed leg 4, the movable leg 5 pulls the telescopic structure 10 to shorten, and since the telescopic structure 10 is composed of a plurality of identical or similar telescopic units 1, each telescopic unit 1 shortens relatively uniformly; therefore, the telescopic structure 10 also uniformly assists in contracting the cable 3 at various positions of the cable 3 during the shortening process, and the suspension arc is gradually revealed.

[0022] It is not difficult for a person skilled in the art to see that the cable movable bracket of the telescopic leg provided in this embodiment prevents the cable 3 from being damaged and worn in at least two ways. First, since the buckle 2.2 is installed on the first axis 2.1 instead of other positions, the extension and contraction of the telescopic unit 1 will not interfere with the posture of the buckle 2.2, and the first structural arm 1.1 and the second structural arm 1.2 are also protected around the buckle 2.2, preventing the suspension arc of the cable 3 from being scratched against the fixed leg 4 or the movable leg 5. In addition, when the telescopic structure 10 is extended and contracted, the clear height of the telescopic unit 1 changes synchronously with the clear height of the suspension arc of the cable 3, which can protect the cable 3 in real time. Secondly, in the traditional solution, the cable 3 is stored by being rolled up. When the cable 3 is pulled, the cable 3 will be divided into a straight section and a rolled up section. The curvature of the cable 3 changes greatly during the process of being rolled up to be straight, which is prone to fatigue of the outer skin material. In this embodiment, the cable 3 is driven to retract and retract by the buckle 2.2, and the buckle 2.2 provides guiding support for the cable 3. The cable 3 changes evenly whether it is extended or shortened, avoiding large changes in curvature and thus avoiding material fatigue.

[0023] It is worth noting that Figure 4 and Figure 5 The middle horizontal electric cylinder 7 pushes / pull the movable leg 5 through the auxiliary structure push rod.

[0024] Therefore, the movable cable bracket of the telescopic leg provided in this embodiment avoids scratches on the cable 3 during telescopic extension and retraction through the structure of the telescopic unit 1, and controls the telescopic extension and retraction at multiple positions of the cable 3 through multiple buckles 2.2, thereby avoiding large curvature changes of the cable 3, and further protecting the outer skin of the cable 3 during the telescopic extension and retraction of the telescopic leg. Embodiment 2

[0025] The present embodiment provides a movable cable bracket with telescopic legs. The present embodiment is optimized on the basis of the first embodiment to improve the technical effect and refine the technical solution. For the contents not fully described in the present embodiment, please refer to the first embodiment.

[0026] As one embodiment, the telescopic structure 10 is formed by connecting a plurality of telescopic units 1 in pairs. Figure 1 The first structural arm 1.1 in each telescopic unit 1 is also rotationally connected to the second structural arm 1.2 in the adjacent telescopic unit 1, and the second structural arm 1.2 in each telescopic unit 1 is also rotationally connected to the first structural arm 1.1 in the adjacent telescopic unit 1.

[0027] As one of the embodiments, the first structural arm 1.1 and the second structural arm 1.2 in a single telescopic unit 1 are connected in an X-shaped rotational manner, the first axis 2.1 is respectively located in the middle of the first structural arm 1.1 and the second structural arm 1.2, and the end of the first structural arm 1.1 in each telescopic unit 1 is connected in a V-shaped rotational manner with the end of the second structural arm 1.2 in the adjacent telescopic unit 1, and the end of the second structural arm 1.2 in each telescopic unit 1 is connected in a V-shaped rotational manner with the end of the first structural arm 1.1 in the adjacent telescopic unit 1, and the two V-shaped openings are opposite to each other.

[0028] By connecting adjacent telescopic units 1 in this way, adjacent telescopic units 1 also have a certain telescopic ability.

[0029] The telescopic unit 1 can be divided not only into a telescopic unit 1 with a buckle 2.2 installed and a telescopic unit 1 without a buckle 2.2 installed, but also into a starting unit 11. Figure 4 The starting unit 11 is a partial telescopic unit 1 of the telescopic structure 10 for connecting the fixed leg 4 and the movable leg 5. Compared with other telescopic units 1, in the starting unit 11, the first structural arm 1.1 and the second structural arm 1.2 are respectively rotatably connected to the fixed leg 4, or the first structural arm 1.1 and the second structural arm 1.2 of the starting unit 11 are respectively rotatably connected to the movable leg 5. That is, the connection points on the first structural arm 1.1 and the second structural arm 1.2, which were originally used for rotatably connecting with other telescopic units 1, are used for rotatably connecting with the fixed leg 4 or the movable leg 5; when the movable leg 5 is extended or retracted, the telescopic structure 10 can be driven to extend or retract.

[0030] The single-layer telescopic structure 10 may have stability problems. As one embodiment, refer to Figures 1 to 3 The telescopic structure 10 is at least a double-layer structure. The telescopic unit 1 includes at least two symmetrical sub-units parallel to each other. The symmetrical sub-units are functionally consistent. A single symmetrical sub-unit includes a first structural arm 1.1 and a second structural arm 1.2 that are rotatably connected to each other. Adjacent symmetrical sub-units are spaced a certain distance apart and rotatably connected to the same first axis 2.1. The first axis 2.1 is used to fix adjacent symmetrical sub-units on both sides of itself to support space for placing the cable 3 in the adjacent symmetrical sub-units. Both sides of the cable 3 are also protected by the symmetrical sub-units. The cable 3 and the surrounding symmetrical sub-units telescope synchronously to avoid scratches and skin damage.

[0031] As one embodiment, the buckle 2.2 can be arranged in the middle of adjacent symmetrical subunits. Figure 6 The cable 3 is inserted into the buckle 2.2 and a gap is left between the buckle 2.2, which facilitates the simple movement of the cable 3 passing in and out of the buckle 2.2 and the cable 3.

[0032] As one example, refer to Figures 1 to 3 The telescopic unit 1 further comprises a second axis 2.3, which is connected to adjacent symmetrical subunits respectively, and is used to synchronize the telescopic actions of adjacent symmetrical subunits. In addition, the second axis 2.3 can also serve as a rotation connection axis between adjacent telescopic units 1.

[0033] When the angle between the first structural arm 1.1 and the second structural arm 1.2 is small and they are close together, a large friction area will be formed between the first structural arm 1.1 and the second structural arm 1.2. When the friction coefficient of the contact surface between the first structural arm 1.1 and the second structural arm 1.2 is large, the first structural arm 1.1 and the second structural arm 1.2 may get stuck. Figure 3 and Figure 5 As one embodiment, the telescopic unit 1 further includes an anti-stacking rod 2.4, which is connected to the first shaft 2.1 and is located within the angle between the first structural arm 1.1 and the second structural arm 1.2. The anti-stacking rod 2.4 is used to prevent the angle between the first structural arm 1.1 and the second structural arm 1.2 from being less than a threshold, thereby avoiding a large friction area between the first structural arm 1.1 and the second structural arm 1.2. Figure 4 Since the first structural arm 1.1 and the second structural arm 1.2 are in a rotational connection with the first shaft 2.1, the anti-overlapping rod 2.4 droops under the action of its own weight to avoid affecting the rotation between the first structural arm 1.1 and the second structural arm 1.2.

[0034] As one embodiment, the telescopic structure 10 is located inside the fixed leg 4 and the movable leg 5 to reduce the corrosion rate. It is worth noting that if the buckle 2.2 is arranged on the second shaft 2.3, the cable 3 may be too close to the inner wall of the fixed leg 4 and the movable leg 5, which may easily induce scratches.

[0035] In summary, the cable movable bracket of the telescopic leg provided in this embodiment improves the telescopic performance, further avoids the problem of the cable 3 being scratched and broken, and reduces the probability of the telescopic unit 1 being stuck, compared with the first embodiment. Embodiment 3

[0036] This embodiment provides a crane, including the cable movable bracket of the telescopic legs provided in the first or second embodiment, and thus has the same technical solution, principle and effect as the first or second embodiment, which will not be repeated here.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided at", "provided with", "located", "installed", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. "Hinged" includes "rotational connection".

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cable movable bracket with telescopic legs, characterized in that: include, A telescopic structure (10) formed by connecting a plurality of telescopic units (1), wherein the telescopic unit (1) comprises a first structural arm (1.1) and a second structural arm (1.2), and the first structural arm (1.1) and the second structural arm (1.2) are rotatably connected via a first axis (2.1); In at least one of the telescopic units (1), the first shaft (2.1) is connected to a buckle (2.2), and the buckle (2.2) is used to connect the cable (3); The two ends of the telescopic structure (10) are respectively connected to a fixed support leg (4) and a movable support leg (5); when the movable support leg (5) drives the telescopic structure (10) to extend or retract, the first structural arm (1.1) and the second structural arm (1.2) rotate.

2. The cable movable bracket of the telescopic leg according to claim 1, characterized in that: The first structural arm (1.1) in each telescopic unit (1) is also rotatably connected to the second structural arm (1.2) in the adjacent telescopic unit (1); and the second structural arm (1.2) in each telescopic unit (1) is also rotatably connected to the first structural arm (1.1) in the adjacent telescopic unit (1).

3. The cable movable bracket of the telescopic leg according to claim 1, characterized in that: The plurality of telescopic units (1) include a starting unit (11), wherein a first structural arm (1.1) and a second structural arm (1.2) of the starting unit (11) are respectively rotatably connected to the fixed leg (4); or, the first structural arm (1.1) and the second structural arm (1.2) of the starting unit (11) are respectively rotatably connected to the movable leg (5).

4. The cable movable bracket of the telescopic leg according to claim 1, characterized in that: The telescopic unit (1) comprises at least two mutually parallel symmetrical subunits, wherein a single symmetrical subunit comprises a first structural arm (1.1) and a second structural arm (1.2) which are rotatably connected to each other, and adjacent symmetrical subunits are spaced a certain distance apart and rotatably connected to the same first axis (2.1).

5. The cable movable bracket of the telescopic leg according to claim 4, characterized in that: The telescopic unit (1) further comprises a second shaft (2.3), wherein the second shaft (2.3) is respectively connected to adjacent symmetrical sub-units, and the second shaft (2.3) is used to synchronize the telescopic movements of adjacent symmetrical sub-units.

6. The cable movable bracket of the telescopic leg according to claim 4, characterized in that: The buckle (2.2) is located in the middle of adjacent symmetrical subunits, and the cable (3) is inserted into the buckle (2.2) with a gap between the buckle (2.2) and the cable (3).

7. The cable movable bracket of the telescopic leg according to claim 1, characterized in that: The telescopic unit (1) further comprises an anti-stacking rod (2.4), the anti-stacking rod (2.4) being connected to the first shaft (2.1), the anti-stacking rod (2.4) being located within an angle between the first structural arm (1.1) and the second structural arm (1.2), the anti-stacking rod (2.4) being used to prevent the angle between the first structural arm (1.1) and the second structural arm (1.2) from being less than a threshold value.

8. The cable movable bracket of the telescopic leg according to claim 1, characterized in that: The telescopic structure (10) is located inside the fixed leg (4) and the movable leg (5).

9. A crane, characterized in that: A cable movable support comprising the telescopic legs as claimed in any one of claims 1 to 8.

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