Structure for electric tug transmission mechanism

Abstract

The utility model discloses a structure for an electric tug transmission mechanism, which relates to the technical field of electric tugs and comprises a tug body, a transmission shaft is arranged in the middle of the tug body, an external thread is arranged on the outer wall of one end of the transmission shaft, and a clamping plate is movably meshed with the outer wall of the external thread in a threaded manner. The middle of the outer wall of the transmission shaft is sleeved with an outer gear, an oil injection pipe movably penetrates through the middle of the transmission shaft, one end of the oil injection pipe is sleeved with a hollow disc, a cavity is formed in the middle of the inner side of the transmission shaft, and an oil outlet is formed in the outer wall of the cavity. By arranging a series of structures, the step of detaching the transmission mechanism from the electric tug can be omitted, so that a driving motor for driving the transmission mechanism to rotate can be conveniently overhauled, and meanwhile, the situation that a gear set structure is lubricated by opening a tug shell can be avoided; and therefore, the gear set in the transmission mechanism can be conveniently and quickly lubricated and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tugboats, in particular to a structure of a transmission mechanism for an electric tugboat. Background Art

[0002] A tugboat is a wheel that can carry heavy objects. It is usually installed on a trailer or a platform for carrying heavy objects, so that the trailer and the heavy objects on the trailer can move along the ground as the tugboat rolls under the traction of the force. Now the more common tugboats include casters and bracket wheels, etc., and these wheels usually do not have their own drive and need to rely on manpower or additional traction to drive. However, when it is necessary to tow and transport heavier objects, it is time-consuming and labor-intensive to rely solely on manpower. Therefore, electric tugboats have emerged. When electric tugboats are connected to external driving forces, they are usually rotated through a transmission structure.

[0003] However, the structure of the existing transmission mechanism for electric tugboats is usually integrally connected to the wheel hub of the electric tugboat. When the drive motor of the drive transmission mechanism needs to be repaired, the drive motor and the transmission shaft usually need to be removed from the electric tugboat before the drive motor can be repaired, which is troublesome and time-consuming. In addition, the structure of the existing transmission mechanism is usually transmitted through a gear set, and the meshing action of the gear set will produce continuous friction, and the frequency of lubrication and maintenance is high. Since the gear set is usually enclosed in the housing of the electric tugboat, the housing needs to be disassembled for lubrication, which is not convenient for quickly lubricating the gear set in the transmission mechanism. Utility Model Content

[0004] The purpose of the utility model is to provide a structure for an electric tugboat transmission mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a structure for an electric tugboat transmission mechanism, comprising a tugboat body, a transmission shaft is provided in the middle of the tugboat body, an outer wall at one end of the transmission shaft is provided with an external thread, a clamping plate is engaged with the outer wall of the external thread, an external gear is sleeved in the middle of the outer wall of the transmission shaft, an oil injection pipe is movably penetrated in the middle of the transmission shaft, a hollow disk is sleeved at one end of the oil injection pipe, and a cavity is provided in the middle of the inner side of the transmission shaft;

[0006] An oil outlet is provided on the outer wall of the cavity, a fixed cylinder is fixedly connected to one side wall of the tugboat body, a first internal gear ring is embedded in the inner wall of the fixed cylinder, a movable cylinder is rotatably connected to one side wall of the fixed cylinder, a second internal gear ring is embedded in the inner wall of the movable cylinder, an internal thread cylinder is provided on the top of the movable cylinder, and a threaded rotating rod is penetrated through the top movable thread of the internal thread cylinder.

[0007] Preferably, a swivel is provided on the middle movable sleeve of the movable cylinder, the internal threaded cylinder is fixedly connected to the top end of the swivel, and the internal threaded cylinder is movably connected to the movable cylinder via the swivel.

[0008] Preferably, a cover plate is clamped on one side wall of the movable cylinder, and the cover plate is movably sleeved and connected to the transmission shaft.

[0009] Preferably, the clamping plate is movably engaged with the tugboat body via an external thread, and one end of the transmission shaft is fixedly connected to a limiting plate.

[0010] Preferably, a rubber plug is engaged at one end of the oil filling pipe away from the hollow disk, an opening is formed on the outer wall of the hollow disk, and the hollow disk is communicated with the interior of the cavity through the opening.

[0011] Preferably, the transmission shaft is movably connected to the tugboat body through a clamping plate and an external gear.

[0012] Preferably, the external gear is movably connected to the first internal gear ring and the second internal gear ring respectively through a transmission shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The structure of the transmission mechanism of the electric tugboat, through the fixed cylinder, the movable cylinder, the clamping plate, the external thread and the transmission shaft, allows the gear of the transmission mechanism to slide from the fixed cylinder into the movable cylinder, and at the same time, through the support of the internal thread cylinder and the threaded rotating rod, the part of the transmission mechanism connected with the drive motor can be separated from the tugboat body, thereby eliminating the step of removing the transmission mechanism from the electric tugboat, and facilitating the maintenance of the drive motor that drives the transmission mechanism to rotate.

[0015] 2. The structure of the electric tugboat transmission mechanism allows lubricating oil to be directly injected into the interior of the transmission mechanism gear set through the oil filling pipe, the hollow disk, the cavity, the oil outlet and the second inner gear ring, and the lubrication between the outer gear and the first inner gear ring and the second inner gear ring is achieved through the horizontal movement of the outer gear in the space inside the fixed cylinder and the movable cylinder, thereby avoiding opening the tugboat casing to lubricate the gear set structure, thereby facilitating rapid lubrication and maintenance of the gear set in the transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the clamping plate and external thread structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the oil filling pipe and hollow disk structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the outer gear and the second inner gear ring of the utility model.

[0020] In the figure: 1. tugboat body; 2. fixed cylinder; 3. threaded rotary rod; 4. internal thread cylinder; 5. swivel; 6. movable cylinder; 7. cover plate; 8. transmission shaft; 9. clamping plate; 10. external thread; 11. limit plate; 12. oil filling pipe; 13. rubber plug; 14. hollow disk; 15. cavity; 16. oil outlet; 17. external gear; 18. first internal gear ring; 19. second internal gear ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 4As shown, the structure of the electric tugboat transmission mechanism of this embodiment includes a tugboat body 1, a transmission shaft 8 is provided in the middle of the tugboat body 1, an outer wall of one end of the transmission shaft 8 is provided with an external thread 10, a clamping plate 9 is engaged with the outer wall of the external thread 10, an external gear 17 is sleeved in the middle of the outer wall of the transmission shaft 8, an oil filling pipe 12 is movably penetrated in the middle of the transmission shaft 8, a hollow disk 14 is sleeved at one end of the oil filling pipe 12, and a cavity 15 is provided in the middle of the inner side of the transmission shaft 8;

[0025] An oil outlet 16 is provided on the outer wall of the cavity 15, a fixed cylinder 2 is fixedly connected to one side wall of the tugboat body 1, a first internal gear ring 18 is embedded in the inner wall of the fixed cylinder 2, a movable cylinder 6 is rotatably connected to one side wall of the fixed cylinder 2, a second internal gear ring 19 is embedded in the inner wall of the movable cylinder 6, an internal threaded cylinder 4 is provided on the top of the movable cylinder 6, and a threaded rotating rod 3 is penetrated by the top movable thread of the internal threaded cylinder 4.

[0026] Specifically, the end of the transmission shaft 8 is butted against the output end of the driving motor, so that the transmission shaft 8 can smoothly drive the external gear 17 to rotate, so that the external gear 17 is slidably meshed with the first internal gear, thereby realizing the driving of the fixed cylinder 2 and the tugboat body 1 fixed to the fixed cylinder 2. The external thread 10 enables the clamping plate 9 to move horizontally on the transmission shaft 8 by thread engagement, so that the transmission shaft 8 can slide horizontally along the tugboat body 1 when the clamping plate 9 is separated from the tugboat body 1, thereby realizing the horizontal sliding of the external gear 17 back and forth between the fixed cylinder 2 and the movable cylinder 6, so that the external gear 17 can contact the first internal gear ring 18 and the second internal gear ring 19 in sequence. The cross-section of the oil filling pipe 12 is "L"-shaped, so that the injected lubricating oil can directly enter the cavity where the gear set is located through the transmission shaft 8, thereby avoiding the need to disassemble the outer shell where the gear set is located and then lubricate it, which is convenient for timely maintenance of the gear set. Lubrication maintenance is performed. The function of the hollow disk 14 is to temporarily store the lubricating oil entering the oil filling pipe 12, and at the same time allow the lubricating oil to enter the cavity 15 of the transmission shaft 8, and finally flow from the oil outlet 16 of the cavity 15 to the second internal gear ring 19 of the movable cylinder 6. The fixed cylinder 2 and the movable cylinder 6 have the same diameter, and the movable cylinder 6 can rotate along the side wall of the fixed cylinder 2, so that the external gear 17 on the transmission shaft 8 can be separated from the first internal gear ring 18 on the fixed cylinder 2, thereby facilitating the idling of the drive motor connected to the transmission shaft 8 and realizing the detection of the drive motor. The first internal gear ring 18 and the second internal gear ring 19 have the same diameter. The bottom end of the threaded rotating rod 3 is fixedly connected to a flat plate, which can be supported on the ground, so that when the transmission shaft 8 slides from the fixed cylinder 2 to the movable cylinder 6, the screw rotating rod and the internal threaded cylinder 4 can support the movable cylinder 6, thereby facilitating the idling detection of the drive motor.

[0027] Furthermore, a swivel 5 is provided on the middle movable sleeve of the movable cylinder 6, the internal threaded cylinder 4 is fixedly connected to the top end of the swivel 5, and the internal threaded cylinder 4 is movably connected to the movable cylinder 6 through the swivel 5. The function of the swivel 5 is to enable the internal threaded cylinder 4 and the movable cylinder 6 to maintain a relatively movable state, so that when the internal threaded cylinder 4 is supported on the ground by the threaded rotating rod 3, it will not interfere with the rotation of the movable cylinder 6, so that the movable cylinder 6 can rotate normally.

[0028] Furthermore, a cover plate 7 is engaged with one side wall of the movable cylinder 6, and the cover plate 7 is movably sleeved and connected to the transmission shaft 8. The cover plate 7 can be removed from one side of the movable cylinder 6, so as to facilitate cleaning and replacement of the inside of the gear set of the transmission mechanism.

[0029] Furthermore, the clamping plate 9 is movably engaged with the tugboat body 1 through an external thread 10, and one end of the transmission shaft 8 is fixedly connected to a limit plate 11. The function of the limit plate 11 is to prevent the clamping plate 9 from accidentally falling off the transmission shaft 8, and to prevent the end of the transmission shaft 8 from slipping out from one side of the tugboat body 1.

[0030] Furthermore, a rubber plug 13 is engaged with one end of the oil filling pipe 12 away from the hollow disk 14, and an opening is provided on the outer wall of the hollow disk 14. The hollow disk 14 is connected to the interior of the cavity 15 through the opening. The function of the rubber plug 13 is to seal the end of the oil filling pipe 12 to prevent the lubricating oil entering the oil filling pipe 12 from flowing back from the pipe mouth, so that the lubricating oil can smoothly enter the hollow disk 14.

[0031] Furthermore, the transmission shaft 8 is movably connected with the tugboat body 1 through the clamping plate 9 and the external gear 17. After the transmission shaft 8 is clamped with one side of the tugboat body 1 through the external thread 10 on the clamping plate 9, the external gear 17 will mesh with the first internal gear ring 18 in the fixed tube 2, so that the transmission shaft 8 can drive the tugboat body 1 to rotate through the gear.

[0032] Furthermore, the outer gear 17 is movably connected to the first inner gear ring 18 and the second inner gear ring 19 respectively through the transmission shaft 8, so that the lubricating oil dripping on the second inner gear ring 19 can soak into the gear teeth on the outer gear 17, and then be smeared on the first inner gear ring 18 through the outer gear 17, thereby realizing the lubrication and maintenance of the gear set on the transmission mechanism.

[0033] The method of using this embodiment is as follows: when using the structure for the electric tugboat transmission mechanism, it is necessary to first install the structure on the tugboat body 1 so that the clamping plate 9 clamps one side of the tugboat body 1, and at the same time the external gear 17 meshes with the first internal gear ring 18 in the fixed cylinder 2, and one end of the transmission shaft 8 is connected to the output end of the driving motor. When it is necessary to perform an idling detection on the driving motor, the clamping plate 9 can be twisted so that the clamping plate 9 slides along the external thread 10 to the side away from the tugboat body 1, so that the clamping plate 9 is separated from the tugboat body 1, and then the threaded rotating rod 3 on the internal threaded cylinder 4 is loosened so that the internal threaded cylinder 4 can be rotated along the outer wall of the movable cylinder 6 to the bottom end of the movable cylinder 6 through the rotating ring 5, so that the bottom end of the threaded rotating rod 3 is close to the ground, and then the transmission shaft 8 can be pulled toward one side of the cover plate 7, so that the transmission shaft 8 drives the external gear 17 to slide horizontally from the first internal gear ring 18 of the fixed cylinder 2 to the second internal gear ring 19 of the movable cylinder 6, so that the external gear The wheel 17 is separated from the fixed cylinder 2, and then the idling detection of the drive motor can be carried out. At the same time, before the outer gear 17 moves from the fixed cylinder 2, lubricating oil can be injected into the oil filling pipe 12, so that the lubricating oil enters the hollow disk 14 through the oil filling pipe 12, and then the oil filling pipe 12 can be pushed to make the hollow disk 14 slide along the cavity 15 in the transmission shaft 8. Until the oil filling pipe 12 can no longer be pushed, the opening on the hollow disk 14 will be connected with the oil outlet 16 on the outer wall of the cavity 15. At this time, the lubricating oil in the hollow disk 14 will enter the movable cylinder 6 and drip on the gear teeth of the second inner gear ring 19 of the movable cylinder 6, so that when the subsequent outer gear 17 is engaged with the second inner gear ring 19, the lubricating oil can be applied to the outer gear 17 through the second inner gear ring 19, and finally when the outer gear 17 is reset, the lubricating oil can be applied to the first inner gear ring 18 through the outer gear 17, so that the gear set on the transmission mechanism can be lubricated and maintained.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A structure for an electric tugboat transmission mechanism, comprising a tugboat body (1), Features: A transmission shaft (8) is provided in the middle of the tugboat body (1), an outer wall of one end of the transmission shaft (8) is provided with an external thread (10), a clamping plate (9) is movably engaged with the outer wall of the external thread (10), an external gear (17) is sleeved in the middle of the outer wall of the transmission shaft (8), an oil injection pipe (12) movably penetrates the middle of the transmission shaft (8), one end of the oil injection pipe (12) is sleeved with a hollow disk (14), and a cavity (15) is provided in the middle of the inner side of the transmission shaft (8); An oil outlet (16) is provided on the outer wall of the cavity (15); a fixed cylinder (2) is fixedly connected to one side wall of the tugboat body (1); a first internal gear ring (18) is embedded in the inner wall of the fixed cylinder (2); a movable cylinder (6) is rotatably connected to one side wall of the fixed cylinder (2); a second internal gear ring (19) is embedded in the inner wall of the movable cylinder (6); an internal thread cylinder (4) is provided on the top of the movable cylinder (6); a threaded rotating rod (3) is penetrated through the top movable thread of the internal thread cylinder (4).

2. A structure for an electric tugboat transmission mechanism according to claim 1, Features: A rotating ring (5) is provided on the middle movable sleeve of the movable cylinder (6), the internal thread cylinder (4) is fixedly connected to the top end of the rotating ring (5), and the internal thread cylinder (4) is movably connected to the movable cylinder (6) via the rotating ring (5).

3. The structure for the electric tugboat transmission mechanism according to claim 1, Features: A cover plate (7) is clamped on one side wall of the movable cylinder (6), and the cover plate (7) is movably sleeved and connected to the transmission shaft (8).

4. The structure for the electric tugboat transmission mechanism according to claim 1, Features: The clamping plate (9) is movably engaged with the tugboat body (1) via an external thread (10), and one end of the transmission shaft (8) is fixedly connected to a limiting plate (11).

5. The structure for the electric tugboat transmission mechanism according to claim 1, Features: A rubber plug (13) is clamped on one end of the oil filling pipe (12) away from the hollow disk (14); an opening is provided on the outer wall of the hollow disk (14); and the hollow disk (14) is communicated with the interior of the cavity (15) through the opening.

6. The structure for the electric tugboat transmission mechanism according to claim 1, Features: The transmission shaft (8) is movably connected to the tugboat body (1) through a clamping plate (9) and an external gear (17).

7. The structure for the electric tugboat transmission mechanism according to claim 1, Features: The external gear (17) is movably connected to the first internal gear ring (18) and the second internal gear ring (19) respectively through a transmission shaft (8).

Images