Rotary joint of electric drive crawler walking machine

Abstract

The present invention provides a rotary joint of an electric-driven crawler walking machine, comprising: an electric slip ring structure and a hydraulic slip ring structure; the electric slip ring structure comprises an electric slip ring, an electric slip ring mounting plate and a slip ring bracket, the slip ring bracket is fixedly arranged on the electric slip ring mounting plate, and the electric slip ring is fixedly arranged on the electric slip ring mounting plate; the hydraulic slip ring structure comprises a rotating shaft and a shell, the electric slip ring mounting plate is fixedly connected to the top end of the rotating shaft, and the shell is sleeved on the outer periphery of the rotating shaft; a transmission rod is passed through the rotating shaft, the transmission top end is connected to the collector ring, and the end is fixedly connected to the shell; so that when an internal combustion engine cannot be used as a power source for driving a main pump, an electric drive can be used as a power source for the main pump to realize a hybrid transmission of oil and electricity.

Description

Technical Field

[0001] The invention relates to a rotary joint, in particular to a rotary joint of an electrically driven crawler walking machine. Background Art

[0002] Central swivel joints are widely used in engineering machinery such as excavators and cranes. They are used to connect the pipes between fixed parts and rotating parts, and are mainly used to transport hydraulic oil and other media. The main working method of existing crawler walking machinery is that the internal combustion engine drives the main pump, and the main pump provides hydraulic power to drive various working parts to work; however, in some special occasions, the internal combustion engine cannot be used as the power source to drive the main pump. For example, in a cotton warehouse, a grabber is needed to pack or transport cotton. At this time, the internal combustion engine cannot be used to operate, which is easy to cause property losses. Summary of the invention

[0003] The technical problem to be solved by the present invention is: through a rotary joint, the equipment can drive the hydraulic transmission structure through the electric transmission structure. The present invention provides a rotary joint of an electrically driven crawler walking machine to solve the above problem.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a rotary joint of an electrically driven crawler walking machine, comprising: an electric slip ring structure and a hydraulic slip ring structure; the electric slip ring structure comprises an electric slip ring, an electric slip ring mounting plate and a slip ring bracket, the slip ring bracket is fixedly arranged on the electric slip ring mounting plate, and the electric slip ring is fixedly arranged on the electric slip ring mounting plate; the hydraulic slip ring structure comprises a rotating shaft and a shell, the electric slip ring mounting plate is fixedly connected to the top end of the rotating shaft, and the shell is sleeved on the outer periphery of the rotating shaft; a transmission rod is passed through the rotating shaft, the transmission top end is connected to the electric slip ring, and the end is fixedly connected to the shell.

[0005] Furthermore, the electric slip ring also includes: a brush holder, a carbon brush and a collector ring; the brush holder is fixedly arranged on the electric slip ring bracket, the carbon brush is fixedly arranged on the brush holder, the collector ring is fixedly arranged on the electric slip ring mounting plate and a slip ring is arranged on the outer periphery of the collector ring, and the slip ring is electrically connected to the carbon brush.

[0006] Furthermore, the electric slip ring structure further comprises an electrical protection cover, and the electrical protection cover is fixedly mounted on the electric slip ring mounting plate.

[0007] Furthermore, the electric slip ring mounting plate is provided with a wire passing hole, through which a cable connected to the upper frame is passed; the collector ring is provided with a wire threading hole, through which a cable connected to the lower frame is passed; the brush holder is provided with a wiring terminal, the wiring terminal is connected to the upper frame cable, and the wiring terminal is electrically connected to the carbon brush.

[0008] Furthermore, the collector ring is also provided with a terminal, which is fixedly arranged on the top of the collector ring and connected to the lower frame cable.

[0009] The beneficial effect of the present invention is that the rotary joint of the electric-driven crawler walking machinery of the present invention makes it possible to use electric drive as the power source of the main pump when the internal combustion engine cannot be used as the power source for driving the main pump, thereby realizing a hybrid transmission of oil and electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 It is a structural half-section schematic diagram of an optimal embodiment of a rotary joint of an electric-driven crawler traveling machine of the present invention.

[0012] Figure 2 It is a schematic top view of an optimal embodiment of a rotary joint of an electric-driven crawler traveling machine of the present invention.

[0013] Figure 3 It is a side view schematic diagram of an optimal embodiment of a rotary joint of an electric-driven crawler walking machine of the present invention.

[0014] In the figure, 1, electric slip ring structure, 2, hydraulic slip ring structure, 3, electric slip ring, 4, electric slip ring mounting plate, 5, slip ring bracket, 6, rotating shaft, 7, housing, 8, transmission rod, 9, brush holder, 10, carbon brush, 11, collector ring, 12, electrical protective cover, 13, wire hole, 14, wire threading hole, 15, terminal, and 16, terminal. DETAILED DESCRIPTION

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limitations of the present invention. On the contrary, embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0016] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0017] In addition, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0018] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0019] like Figure 1 As shown, the present invention provides a rotary joint device in which an electric slip ring structure 1 and a hydraulic slip ring structure 2 are arranged; in order to realize electric drive as the power source of the main pump, the hydraulic slip ring structure 2 is arranged in coordination with the electric slip ring structure 1, the end of the rotating shaft 6 is embedded in the hydraulic slip ring housing 7, the electric slip ring structure 1 is arranged at the head end of the rotating shaft 6, the electric slip ring structure 1 is fixedly connected to the upper frame, and the hydraulic slip ring structure 2 is connected to the lower frame, so that the upper and lower frames can rotate relative to each other and the electric drive crawler can be realized;

[0020] The electric slip ring structure 1 comprises an electric slip ring 3, an electric slip ring mounting plate 4, and a slip ring bracket 5. The electric slip ring mounting plate 4 is fixedly arranged at the top of the rotating shaft 6. The electric slip ring mounting plate 4 is fixedly connected to the upper frame. The electric slip ring 3 and the slip ring bracket 5 are arranged on the electric slip ring mounting plate 4. The slip ring bracket 5 is used to assist the setting and use of the electric slip ring 3. The electric slip ring 3 is arranged under the slip ring bracket 5.

[0021] The hydraulic slip ring structure 2 includes a rotating shaft 6 and a shell 7. A transmission rod 8 is also arranged in the rotating shaft 6. The transmission rod 8 is inserted into the rotating shaft 6. The upper end of the transmission rod 8 is connected to the collector ring 11, and the lower end is connected to the shell 7, so that the collector ring 11, the transmission rod 8 and the shell 7 maintain a relatively consistent motion state; when the upper and lower frames rotate relative to each other, the rotating shaft 6 and the hydraulic slip ring structure 2 rotate relative to each other, that is, the collector ring 11 and the rotating shaft 6 rotate relative to each other, and the rotating shaft 6 is fixedly connected to the electric slip ring mounting plate 4, and the collector ring 11 and the slip ring bracket 5 rotate relative to each other, so that when the upper and lower frames rotate relative to each other, the collector ring 11 and the carbon brush 10 are still in friction contact, thereby achieving the effect of electricity transmission during rotation.

[0022] The electric slip ring 3 is arranged under the slip ring bracket 5. The slip ring bracket 5 cooperates with the arrangement of the electric slip ring 3. The electric slip ring 3 includes: a brush holder 9, a carbon brush 10 and a collector ring 11; the collector ring 11 is fixedly arranged on the central axis of the electric slip ring mounting plate 4, the slip ring bracket 5 is evenly arranged around the collector ring 11, the brush holder 9 is evenly arranged on the slip ring bracket 5, the carbon brush 10 is fixedly arranged on the brush holder 9, and the carbon brush 10 is fully in contact with the collector ring of the collector ring 11; when the upper and lower frames rotate relative to each other, that is, the slip ring bracket 5 and the collector ring 11 rotate relative to each other, it is ensured that the carbon brush 10 and the collector ring 11 can still be fully in contact with each other, so as to achieve the effect of electrical transmission.

[0023] The electrical protection cover 12 is arranged on the slip ring mounting plate and fixed in cooperation with the positioning step on the side of the slip ring mounting plate, so that the electrical protection cover 12 can fully protect the internal components and is firmly fixed on the electrical slip ring mounting plate 4 and is not easy to fall off.

[0024] The mounting platform is fixedly arranged at the top end of the housing 7, and the end cover is fixedly arranged at the end of the housing 7 to form a semi-enclosed structure. The rotating shaft 6 penetrates into the housing 7 of the hydraulic slip ring and fits with the inner wall of the housing 7. The top end of the rotating shaft 6 is fixedly connected to the electric slip ring structure 1 to realize the basic structure of the central rotary joint; the mounting platform is fixedly arranged with the lower frame, that is, the entire hydraulic slip ring structure 2 is arranged on the lower frame, so as to achieve the effect that the hydraulic slip ring structure 2 maintains a relatively consistent motion state. When the upper and lower frames rotate relative to each other, the rotating shaft 6 and the hydraulic slip ring structure 2 rotate relative to each other.

[0025] The slip ring mounting plate 4 is provided with a wire hole 13, and the brush holder 9 is provided with a terminal 15. External wires are introduced into the electrical protective cover 12 through the wire hole 13 of the slip ring mounting plate 4, and are electrically connected to the terminal 15, that is, the carbon brush 10 connected to the brush holder 9 obtains electric energy; the collector ring 11 is also provided with a wire hole 14, so that the external wires pass through the wire hole 14 of the collector ring 11, so that the collector ring 11 obtains electric energy, and the collector ring 11 is electrically connected to the carbon brush 10 to form a closed loop, that is, current conduction is realized, and electric transmission is completed.

[0026] The collector ring 11 is provided with terminals 16, and different terminals 16 are electrically connected to corresponding bus rings, and the wires passed through the wire holes 13 are electrically connected to the corresponding different terminals 16. Since the carbon brush 10 and the bus ring are electrically connected, the wires introduced through the wire holes 13 on the slip ring mounting plate 4 and the wires in the wire holes 13 of the collector ring 11 are connected to form a closed loop.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0028] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A rotary joint of an electrically driven crawler walking machine, comprising: An electric slip ring structure (1) and a hydraulic slip ring structure (2); characterized in that: the electric slip ring structure (1) comprises an electric slip ring (3), an electric slip ring mounting plate (4) and a slip ring bracket (5); the slip ring bracket (5) is fixedly arranged on the electric slip ring mounting plate (4); and the electric slip ring (3) is fixedly arranged on the electric slip ring mounting plate (4); The hydraulic slip ring structure (2) comprises a rotating shaft (6) and a housing (7), the electric slip ring mounting plate (4) is fixedly connected to the top end of the rotating shaft (6), and the housing (7) is sleeved on the outer circumference of the rotating shaft (6); The electric slip ring structure (1) is fixedly connected to the upper frame, the hydraulic slip ring structure (2) is connected to the lower frame, the mounting platform is fixedly arranged on the top of the housing (7), and the mounting platform is fixedly arranged on the lower frame; A transmission rod (8) is inserted through the rotating shaft (6), the top end of the transmission rod is connected to the electric slip ring (3), and the end is fixedly connected to the housing (7).

2. The rotary joint of the electrically driven crawler walking machine according to claim 1, characterized in that: The electric slip ring (3) further comprises: a brush holder (9), a carbon brush (10) and a collector ring (11); the brush holder (9) is fixedly arranged on the electric slip ring (3) bracket, the carbon brush (10) is fixedly arranged on the brush holder (9), the collector ring (11) is fixedly arranged on the electric slip ring mounting plate (4), and a collector ring is arranged on the periphery of the collector ring (11), the carbon brush is attached to the periphery of the collector ring, and the carbon brush (10) is electrically connected to the collector ring.

3. The rotary joint of the electrically driven crawler walking machine according to claim 1, characterized in that: The electric slip ring structure (1) further comprises an electric protection cover (12), wherein the electric protection cover (12) is fixedly mounted on the electric slip ring mounting plate (4).

4. The rotary joint of the electrically driven crawler traveling machine according to claim 2, characterized in that: The electric slip ring mounting plate (4) is provided with a wire hole (13), through which a cable connected to the upper frame is passed; the collector ring (11) is provided with a wire hole (14), through which a cable connected to the lower frame is passed; The brush holder (9) is provided with a wiring terminal (15), the wiring terminal (15) is connected to an upper frame cable, and the wiring terminal (15) is electrically connected to the carbon brush (10).

5. The rotary joint of the electrically driven crawler traveling machine according to claim 4, characterized in that: The collector ring (11) is also provided with a terminal post (16), the terminal post (16) being fixedly arranged on the top of the collector ring (11), the terminal post (16) being electrically connected to the collector ring and the terminal post (16) being connected to the lower frame cable.

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