Telescopic cable drum and operation machine

Abstract

The utility model relates to a telescopic cable drum and an operation machine. The telescopic cable drum comprises a telescopic hollow shaft, a drum support rotationally installed on the hollow shaft, a slip ring box arranged between the hollow shaft and the drum support, an inner cable arranged in a hollow inner hole of the hollow shaft, and an outer cable wound on the drum support. The winding drum bracket realizes translation of the position of the winding drum bracket through a telescopic structure of the hollow shaft; the static inner cable and the rotating outer cable are electrically connected through the slip ring box; the telescopic cable drum is installed in an inner cavity of a spare tire of the operation machine. The telescopic cable drum occupies a small space, is not limited by an operation space or the position of a fixed power distribution cabinet, enables cables of operation machinery to be stored and used conveniently, and is high in operation efficiency and high in safety.

Description

Technical Field

[0001] The utility model relates to a telescopic cable reel and an operating machine, belonging to the field of engineering machinery. Background Art

[0002] The electrification of construction machinery operating devices can fundamentally eliminate the environmental pollution caused by fossil fuels, and can also improve the overall intelligence and digitalization level of construction machinery. Therefore, various construction machinery manufacturers are investing a lot of resources in the research and development of related technologies and products.

[0003] In the electric product series of construction machinery operation devices, plug-in operation machinery products only need to use the cable carried by the vehicle to connect to the external industrial AC power supply. In theory, they can achieve 24-hour continuous operation without the need to add fuel and urea, truly achieving zero carbon emissions in the operating state. Plug-in operation machinery is increasingly recognized by the market for its good reliability and site adaptability.

[0004] The cables carried by plug-in operating machinery are the only channel for external energy input during operation, which is related to the safety and stability of construction machinery operations. Taking lifting machinery as an example, due to the complexity of lifting working conditions and lifting working environment, it is impossible to lay or pre-bury dedicated power supply lines, and only a limited number of fixed-position distribution cabinets can be provided. Unlike the high efficiency of traditional fuel-powered operating machinery that can operate after docking in the operating area, plug-in operating machinery needs to consider in advance to meet various spatial obstacles and line protection requirements at the operating site, and quickly connect the operating machinery body and external power supply during construction. The convenience and humanization of cable storage and use of plug-in operating machinery will directly affect the efficiency and safety of the operation.

[0005] The existing plug-in operating machinery is based on the original fuel operating machinery chassis, and a universal cable reel is purchased and placed in a tool box or a sleeper bracket, such as Figure 1 As shown, when plugging in, the cable is manually pulled out and connected to an external power source, and the cable can be automatically reeled in after the construction is completed. In order to meet the wide range of product applications, the universal cable reel has a fixed size and requires a fixed plane within a certain range for installation. In the existing technical solutions, the cable reel occupies the tool box or sleeper box of the operating machinery, resulting in a waste of space. The cable reel is arranged on one side of the vehicle. Due to the limitation of the working space or the position of the fixed distribution cabinet, the on-board cable needs to bypass the chassis of the operating machinery or pass under the operating machinery, which poses a risk of the line being squeezed by the rotating vehicle or tires.

[0006] Therefore, there is an urgent need for a telescopic cable reel and operating machinery that can save installation space, is not restricted by the working space or the position of a fixed distribution cabinet, is easy to store and use cables, has high operating efficiency and high safety. Summary of the invention

[0007] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a telescopic cable reel and operating machinery that can save installation space, is not restricted by the working space or the position of a fixed distribution cabinet, is convenient for cable storage and use, has high operating efficiency and high safety.

[0008] The purpose of the utility model is achieved in this way:

[0009] A telescopic cable reel comprises a telescopic hollow shaft, a reel support rotatably mounted on the hollow shaft, a slip ring box arranged between the hollow shaft and the reel support, an inner cable arranged in a hollow inner hole of the hollow shaft, and an outer cable wound on the reel support; the reel support realizes translation of the reel support position through the telescopic structure of the hollow shaft; the stationary inner cable and the rotating outer cable are electrically connected through the slip ring box.

[0010] Furthermore, the hollow shaft includes a hollow shaft first section, a hollow shaft last section rotatably nested in the inner hole of the reel support, and a plurality of hollow shaft intermediate sections that are slidably nested and installed step by step between the hollow shaft first section and the hollow shaft last section; the diameters of the hollow shaft last section, each hollow shaft intermediate section, and the hollow shaft first section increase or decrease step by step to achieve step-by-step nesting and telescoping.

[0011] Furthermore, the hollow shaft last section, each hollow shaft middle section, and the hollow shaft first section are nested and contracted to form a contracted hollow shaft, and the contracted hollow shaft is located inside the reel support.

[0012] Furthermore, the reel support is rotatably mounted on the outer end of the hollow shaft, and a handle for facilitating push-pull and telescopic operations is installed in the inner hole of the outer end of the hollow shaft.

[0013] Furthermore, the outer cable and the inner cable both contain multiple strands of conductors, which respectively meet the electrical transmission of power electricity, control signals and data communications.

[0014] Furthermore, the slip ring box is provided with a slip ring inner ring, a slip ring middle layer and a slip ring outer ring in sequence from the inside to the outside; the slip ring inner ring is fixedly sleeved on the outer circle of the hollow shaft and is electrically connected to the inner cable in the inner hole of the hollow shaft; the slip ring outer ring is fixedly nested in the inner hole of the reel bracket and is electrically connected to the outer cable wound around the reel bracket; the slip ring inner ring and the slip ring outer ring are dynamically electrically connected via the slip ring.

[0015] Furthermore, a plurality of conductive channels are provided between the slip ring inner ring and the slip ring outer ring of the slip ring box to meet the transmission requirements of multiple strands of wires between the outer cable and the inner cable.

[0016] A working machine, wherein a spare tire is installed on the rear frame of the working machine, and any of the above-mentioned telescopic cable reels is installed in the inner cavity of the rim of the spare tire, wherein the inner cable is connected to the access circuit of the working machine, and the outer cable is connected to an external power supply distribution cabinet.

[0017] Furthermore, the telescopic direction of the hollow shaft of the telescopic cable reel is consistent with the forward and backward direction of the operating machinery.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The telescopic cable reel of the utility model realizes the telescopic movement of the cable reel by installing a telescopic hollow shaft in the inner cavity of the reel bracket and utilizing the telescopic ability of the hollow shaft. When the hollow shaft is in the contracted state, the hollow shaft is entirely located inside the reel bracket, so that the cable reel occupies a small space as a whole and the installation arrangement is more flexible.

[0020] The operating machinery of the utility model arranges the telescopic cable reel in the inner space of the spare tire at the rear of the frame to realize telescopic switching between the use state and the non-use state, making full use of the layout space of the whole vehicle. At the same time, the device is arranged right behind the vehicle, which improves the convenience of charging operation of the plug-in operating machinery, is not restricted by the working space or the position of the fixed distribution cabinet, is convenient for cable storage and use, and has high working efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the cable reel installation for existing operating machinery.

[0022] Figure 2 This is a fully extended state view of a telescopic cable reel of the utility model.

[0023] Figure 3 The utility model is a telescopic cable reel in a fully retracted state.

[0024] Figure 4 The utility model is a perspective view of a telescopic cable reel in a fully extended state.

[0025] Figure 5 The utility model is a perspective view of a telescopic cable reel in a fully retracted state.

[0026] Figure 6 The utility model is a front view structural schematic diagram of a telescopic cable reel in a fully extended state.

[0027] Figure 7 The utility model is a front view structural schematic diagram of a telescopic cable reel in a fully retracted state.

[0028] Figure 8The utility model is a schematic diagram of the installation structure of a slip ring box of a telescopic cable reel.

[0029] Fig. 9 The utility model is a schematic diagram of a cable reel of an operating machine in a retracted state.

[0030] Fig.10 The utility model is a schematic diagram of a cable reel of an operating machine in an extended state.

[0031] in:

[0032] Spare tire 1, frame 2, tool box 3, tire 4, platform 5, cable drum 6, outer cable 7, inner cable 8;

[0033] Handle 61, slip ring box 62, reel support 63, hollow shaft end section 64, hollow shaft middle section 65, hollow shaft first section 66;

[0034] Slip ring middle layer 621 , slip ring outer ring 622 , slip ring inner ring 623 . DETAILED DESCRIPTION Example

[0035] See also Figure 2~Figure 8 The utility model relates to a telescopic cable reel, comprising a telescopic hollow shaft, a reel support 63 rotatably mounted on the hollow shaft, a slip ring box 62 arranged between the hollow shaft and the reel support 63, an inner cable 8 arranged in the hollow inner hole of the hollow shaft, and an outer cable 7 wound on the reel support 63; the reel support 63 realizes the translation of the position of the reel support 63 through the telescopic structure of the hollow shaft; the static inner cable 8 and the rotating outer cable 7 are electrically connected through the slip ring box 62; the reel support 63 is rotatably mounted on the outer end of the hollow shaft, and in order to facilitate the telescopic operation of the reel support 63, a handle 61 for pushing and pulling the telescopic operation is installed in the inner hole of the outer end of the hollow shaft, see Figure 2 The outer cable 7 and the inner cable 8 each contain multiple strands of wires, which respectively meet the electrical transmission of power, control signals and data communications;

[0036] The hollow shaft comprises a hollow shaft first section 66, a hollow shaft last section 64 rotatably nested in the inner hole of the reel holder 63, and a plurality of hollow shaft intermediate sections 65 which are slidably nested and installed step by step between the hollow shaft first section 66 and the hollow shaft last section 64, wherein the end of the hollow shaft first section 66 is provided with a mounting connection portion, such as a flange structure, for mounting and connecting with the operating machinery; the diameters of the hollow shaft last section 64, each hollow shaft intermediate section 65, and the hollow shaft first section 66 are increased or decreased step by step, realizing two nesting and telescopic modes of step-by-step embedded or jacket type; the hollow shaft last section 64, each hollow shaft intermediate section 65, and the hollow shaft first section 66 are nested and contracted to form a contracted hollow shaft, and the contracted hollow shaft is located inside the reel holder 63. After the hollow shaft is contracted, it is completely embedded in the interior of the reel holder 63 without occupying additional space; in this embodiment, the number of the hollow shaft intermediate sections 65 is 3, that is, the hollow shaft is four-stage telescopic, see Figure 2 , Figure 4 and Figure 6 In some embodiments, according to the size of the reel support 63 and the requirement of its translation distance, the number of the hollow shaft intermediate sections 65 can be zero or more. If there are zero hollow shaft intermediate sections 65, the hollow shaft only includes one stage of telescopic movement;

[0037] The slip ring box 62 is provided with a slip ring inner ring 623, a slip ring middle layer 621 and a slip ring outer ring 622 in sequence from the inside to the outside; the slip ring inner ring 623 is fixedly sleeved on the outer circle of the hollow shaft end section 64, and is electrically connected to the inner cable 8 in the inner hole of the hollow shaft; the slip ring outer ring 622 is fixedly nested in the inner hole of the reel support 63, and is electrically connected to the outer cable 7 wound around the reel support 63; the slip ring inner ring 623 and the slip ring outer ring 622 are dynamically electrically connected via the slip ring;

[0038] Slip ring is an electrical component responsible for connecting the rotating body, transmitting energy and signals. It is a device that transmits electrical signals and energy between the rotating part and the stationary part of the antenna mount by sliding or rolling contact, electrostatic coupling or electromagnetic coupling of conductive parts. According to the transmission medium, slip rings are divided into electric slip rings, fluid slip rings, and smooth slip rings, which can also be collectively referred to as "rotational connection" or "rotational connection". Slip rings are usually installed at the rotation center of the equipment, and are mainly composed of two parts: rotating and stationary. The rotating part is connected to the rotating structure of the equipment and rotates with it, which is called the "rotor", and the stationary part is connected to the energy of the fixed structure of the equipment, which is called the "stator"; a plurality of sets of conductive slip ring channels are provided between the slip ring inner ring 623 and the slip ring outer ring 622 of the slip ring box 62 to meet the transmission requirements of multiple strands of wires between the rotating outer cable 7 and the stationary inner cable 8;

[0039] Compared with the general cable reel in the prior art which occupies a large space and affects the layout of the entire operating machinery, the telescopic cable reel of the utility model installs a telescopic hollow shaft in the inner cavity of the reel bracket 63 and utilizes the telescopic ability of the hollow shaft to realize the telescopic movement of the cable reel. A slip ring box is arranged between the reel bracket 63 and the hollow shaft to connect the outer cable 7 on the reel bracket 63 and the inner cable 8 in the inner hole of the hollow shaft. When the hollow shaft is in the contracted state, the hollow shaft is located as a whole inside the reel bracket 63, so that the cable reel occupies a small space as a whole and the installation arrangement is more flexible. Example

[0040] See also Figure 9~Figure 10 The present invention relates to a working machine, wherein a spare tire 1 is installed on the rear frame 2 of the working machine, and a telescopic cable reel 6 of the above-mentioned embodiment 1 is installed in the inner cavity of the rim of the spare tire 1. Fig. 9 , wherein the inner cable 8 is connected to the charging access circuit of the operating machine, and the outer cable 7 is connected to the external power distribution cabinet; the telescopic direction of the telescopic cable reel hollow shaft is consistent with the forward and backward direction of the operating machine. When plugging in for work, there is no need to consider whether the distribution cabinet is on the left or right side of the frame 2. Just pull out the reel bracket 63, release the outer cable 7 and connect the distribution cabinet; because the reel bracket 63 is not blocked by the operating machine walkway 5 after being pulled out, and does not pass through the bottom of the walkway 5, it can effectively avoid being pressed by the tire 4, which greatly facilitates the storage and use of the cable and has high safety; after the work is finished, the outer cable 7 is put away and the reel bracket 63 is pushed into the inside of the rim of the spare tire 1. After retracting into the spare tire 1, it does not occupy additional space such as the tool box 3 on the walkway 5, and there is no need to change the original structure of the walkway 5. It is easy to use and has low cost;

[0041] When the machine is working, by utilizing the telescopic function of the cable drum, the drum bracket 63 of the cable drum can be pulled out of the spare tire 1 to connect the power distribution cabinet in any direction on the left and right sides of the platform 5, which is no longer restricted by the working space or the fixed position of the power distribution cabinet. The cable storage and use are convenient, the working efficiency is high, and there is no need to pass the cable from the bottom of the platform 5 to avoid the external cable 7 being pressed by the tire 4, which is highly safe. Fig.10 .

[0042] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A telescopic cable reel, characterized in that: The invention comprises a telescopic hollow shaft, a reel support (63) rotatably mounted on the hollow shaft, a slip ring box (62) arranged between the hollow shaft and the reel support (63), an inner cable (8) arranged in a hollow inner hole of the hollow shaft, and an outer cable (7) wound on the reel support (63); the reel support (63) realizes translation of the position of the reel support (63) through the telescopic structure of the hollow shaft; and the stationary inner cable (8) and the rotating outer cable (7) are electrically connected through the slip ring box (62).

2. The telescopic cable reel according to claim 1, characterized in that: The hollow shaft comprises a hollow shaft first section (66), a hollow shaft last section (64) rotatably nested in the inner hole of the reel support (63), and a plurality of hollow shaft intermediate sections (65) slidably nested and installed step by step between the hollow shaft first section (66) and the hollow shaft last section (64); the diameters of the hollow shaft last section (64), each hollow shaft intermediate section (65), and the hollow shaft first section (66) are gradually increased or decreased, thereby realizing step-by-step nesting and telescoping.

3. The telescopic cable reel according to claim 2, characterized in that: The hollow shaft end section (64), each hollow shaft middle section (65), and the hollow shaft first section (66) are nested and contracted to form a contracted hollow shaft, and the contracted hollow shaft is located inside the reel support (63).

4. The telescopic cable reel according to claim 1, characterized in that: The reel support (63) is rotatably mounted on the outer end of the hollow shaft, and a handle (61) is mounted in the inner hole of the outer end of the hollow shaft for facilitating push-pull and telescopic operations.

5. The telescopic cable reel according to claim 1, characterized in that: The outer cable (7) and the inner cable (8) both contain multiple strands of conductors, which respectively meet the requirements of electrical transmission of power electricity, control signals and data communication.

6. The telescopic cable reel according to claim 1, characterized in that: The slip ring box (62) is provided with a slip ring inner ring (623), a slip ring middle layer (621) and a slip ring outer ring (622) in sequence from the inside to the outside; the slip ring inner ring (623) is fixedly sleeved on the outer circle of the hollow shaft and is electrically connected to the inner cable (8) in the inner hole of the hollow shaft; the slip ring outer ring (622) is fixedly nested in the inner hole of the reel support (63) and is electrically connected to the outer cable (7) wound around the reel support (63); the slip ring inner ring (623) and the slip ring outer ring (622) are dynamically electrically connected via the slip ring.

7. The telescopic cable reel according to claim 6, characterized in that: A plurality of groups of conductive slip ring channels are provided between the slip ring inner ring (623) and the slip ring outer ring (622) of the slip ring box (62), so as to meet the transmission requirements of multiple strands of wires between the outer cable (7) and the inner cable (8).

8. An operating machine, wherein a spare tire (1) is mounted on a rear frame (2) of the operating machine, wherein: A telescopic cable reel according to any one of claims 1 to 6 is installed in the inner cavity of the wheel rim of the spare tire (1), wherein the inner cable (8) is connected to the access circuit of the working machine, and the outer cable (7) is connected to an external power distribution cabinet.

9. The working machine according to claim 8, characterized in that: The telescopic direction of the hollow shaft of the telescopic cable reel is consistent with the forward and backward direction of the operating machine.

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