Rack rail monorail crane and rack rail driving device thereof

Abstract

The utility model provides a rack rail monorail crane and a rack rail driving device thereof. The rack rail monorail crane comprises a driving frame, a bearing wheel set, a first gear box, a second gear box, a first motor and a second motor, the bearing wheel sets are arranged on the driving frame in pairs and used for running on the two sides of the I-shaped rail. The first gear box is connected to the driving frame, and a first straight gear is rotationally arranged in the first gear box and used for being meshed with a rack below the I-shaped rail; the first motor and the second motor are fixedly installed on the two sides of the first gearbox correspondingly, and output shafts of the first motor and the second motor are arranged in the vertical direction. The second gear box is fixedly arranged below the driving frame, output shafts of the first motor and the second motor are connected with the two input ends of the second gear box correspondingly, and the second gear box is used for driving the first straight gear to rotate. And by adopting dual-motor driving, the reliability and efficiency of power output are improved. The double motors are vertically arranged, the overall design is compact, and the structure is reasonable.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooth-rail drive, and particularly relates to a tooth-rail monorail crane and a tooth-rail drive device thereof. Background Art

[0002] The tooth-rail monorail crane is a transportation equipment in coal mines at present. Due to its large climbing angle, sufficient power and not easy to slide, it has become a transportation equipment with high safety in current coal mines.

[0003] The tooth-rail monorail crane travels on an I-shaped track through a tooth-rail drive device. The existing tooth-rail monorail crane mainly uses a diesel engine as the power source, and then drives the tooth-rail drive device to run on the track through a hydraulic motor. Since the diesel engine host has heavy pollution in coal mines, the current underground monorail crane has been gradually improved towards clean energy, such as lithium batteries. The tooth-rail drive device of the monorail crane using lithium batteries as the power source needs to be driven by an electric motor.

[0004] For the existing tooth-rail drive device driven by an electric motor, its motor shaft is usually horizontally arranged, and its overall width is relatively large, and the structural layout is not compact enough. This structural form cannot adapt to the narrow roadway in coal mines. Content of the Utility Model

[0005] The purpose of the utility model is to provide a tooth-rail monorail crane and a tooth-rail drive device thereof, so as to solve the problem that the structure of the tooth-rail drive device driven by an electric motor in the prior art is not compact enough.

[0006] A tooth-rail drive device provided by the utility model includes:

[0007] A driving frame;

[0008] A pair of load-bearing wheel sets, which are arranged on the driving frame in pairs and are used for running on both sides of the I-shaped track;

[0009] A first gearbox, which is connected to the driving frame, and a first spur gear is rotatably arranged therein, and the first spur gear is used for meshing with the rack under the I-shaped track;

[0010] A first motor and a second motor, which are respectively fixedly installed on both sides of the first gearbox and the output shafts of both are arranged along the vertical direction;

[0011] A second gearbox, which is fixedly arranged under the driving frame, the output shafts of the first motor and the second motor are respectively connected to two input ends of the second gearbox, and the second gearbox is used for driving the first spur gear to rotate.

[0012] In a possible embodiment, the second gearbox includes a second housing and a first driving bevel gear, a second driving bevel gear, a first driven bevel gear, a second driven bevel gear, a second spur gear and a rotating shaft disposed in the second housing. The first driven bevel gear, the second spur gear and the second driven bevel gear are coaxially disposed on the rotating shaft in sequence. A first driving bevel gear meshing with the first driven bevel gear is connected to the output shaft of the first motor, and a second driving bevel gear meshing with the second driven bevel gear is connected to the output shaft of the second motor. The second spur gear meshes with the first spur gear.

[0013] In a possible embodiment, a braking device is further included. The braking device is fixedly connected to the driving frame and includes a pair of brake blocks arranged on both sides of the I-shaped track. The braking device is configured to control the two brake blocks to clamp or loosen the web of the I-shaped track when it obtains an action signal.

[0014] In a possible embodiment, the first motor and the second motor are explosion-proof three-phase asynchronous motors.

[0015] In a possible embodiment, the first motor and the second motor are explosion-proof permanent magnet variable frequency integrated machines.

[0016] In a possible embodiment, one end of the first gearbox is hinged to the driving frame, and the other end is fixed to the driving frame by a fastener.

[0017] The present utility model further provides a toothed rail single rail crane, including the above-mentioned toothed rail driving device.

[0018] The beneficial effects of the present utility model: By adopting a dual-motor drive, the power is transmitted to the first spur gear meshing with the track rack through the second gearbox, realizing the reliability and efficiency of power output. The dual motors are arranged vertically, making the overall design compact and the structure reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the front view of the toothed rail driving device provided by an embodiment of the present utility model.

[0021] Figure 2It is a side view of a tooth-rail drive device provided by an embodiment of the present utility model.

[0022] Figure 3 is Figure 1 the A-A cross-sectional view in

[0023] Figure 4 It is the front view of the braking device of the present utility model.

[0024] In the figure: 1. Braking device; 11. Braking oil cylinder; 12. Braking plate; 13. Braking block; 2. Driving frame; 3. Second gearbox; 31. First driving bevel gear; 32. Second housing; 33. First driven bevel gear; 34. Rotating shaft; 35. Second spur gear; 36. Second driven bevel gear; 37. Second driving bevel gear; 4. First motor; 5. Second motor; 6. First gearbox; 61. First spur gear; 62. First housing; 63. Hinge shaft; 64. Second fastener; 7. Load wheel set. Specific embodiments

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of this specification, references to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] Refer to Figures 1-4 , this embodiment provides a tooth-rail drive device, which includes a driving frame 2, a first gearbox 6 is arranged in the middle of the driving frame 2, a second gearbox 3 is fixedly connected below the first gearbox 6, a first motor 4 and a second motor 5 are fixedly connected on both sides of the first gearbox 6, and a load wheel set 7 is arranged on the top of the driving frame 2.

[0028] Among them, a space for the track to pass through is formed in the upper middle part of the driving frame 2, and a part of the first spur gear 61 arranged in the first gearbox 6 extends from the bottom of the driving frame 2 into this space, and the first spur gear 61 is used to mesh with the rack under the I-shaped track.

[0029] Reference Figure 3 , in some examples, the first gearbox 6 is connected to the driving frame 2, the first spur gear 61 is arranged in the first housing 62 of the first gearbox 6, and it can rotate in the first housing 62. Openings are provided at the top and bottom of the first housing 62, and the upper and lower parts of the first spur gear 61 extend out from the upper and lower openings of the first housing.

[0030] Reference Figure 1 and Figure 3 , in some possible embodiments, the first motor 4 and the second motor 5 are respectively fixedly connected to both sides of the first housing 62 of the first gearbox 6. Here, the output shafts of the first motor 4 and the second motor 5 are arranged vertically downward and are connected to the second gearbox 3 to drive the second gearbox 3, and the second spur gear 35 in the second gearbox 3 drives the first spur gear 61 to rotate.

[0031] Reference Figure 1 , in some possible implementation manners, the second gearbox 3 includes a second housing 32 and a first driving bevel gear 31, a second driving bevel gear 37, a first driven bevel gear 33, a second driven bevel gear 36, a second spur gear 35 and a rotating shaft 34 arranged in the second housing 32. The first driven bevel gear 33, the second spur gear 35 and the second driven bevel gear 36 are coaxially arranged on the rotating shaft 34 in sequence, and the rotating shaft 34 is rotatably connected to the mounting bracket in the second housing 32. A first driving bevel gear 31 is connected to the output shaft of the first motor 4, and a second driving bevel gear 37 is connected to the output shaft of the second motor 5; the first driving bevel gear 31 meshes with the first driven bevel gear 33; the second driving bevel gear 37 meshes with the second driven bevel gear 36, and the second spur gear 35 meshes with the first spur gear 61.

[0032] In some possible embodiments, the top of the second housing 32 is fixed to the first housing 62 by a first fastener such as a screw.

[0033] Optionally, the first motor 4 and the second motor 5 adopt explosion-proof single-phase asynchronous motors.

[0034] Optionally, the first motor 4 and the second motor 5 adopt explosion-proof permanent magnet variable frequency integrated machines.

[0035] In some possible embodiments, the rack-and-pinion drive device further includes a braking device 1, which is fixedly connected to the drive frame 2 and includes a pair of brake blocks 13 arranged on both sides of the I-shaped track; the braking device 1 is configured to control the two brake blocks 13 to clamp or release the web of the I-shaped track when it obtains an action signal. Specifically, the braking device 1 includes a brake cylinder 11 with a spring, brake plates 12 arranged at both ends of the brake cylinder 11, the middle of the brake plates 12 is hinged to the drive frame 2, a brake rod is connected to the top of the brake plates 12, and the brake blocks 13 are connected to the free ends of the brake rods. When the hydraulic cylinder is filled with oil, the braking device releases the brake; when the hydraulic cylinder releases pressure, the braking device applies the brake.

[0036] In some examples, one end of the first gearbox 6 is hinged to the drive frame 2 through a hinge shaft 63, and the other end is fixed to the drive frame through a second fastener 64 such as a screw. When the screw is removed, the first gearbox 6 together with the two motors rotates by a certain angle around the hinge shaft 63 to disengage the first spur gear 61 from the rack under the track, facilitating disassembly or installation or vehicle movement.

[0037] The embodiment of the present invention further provides a rack-and-pinion monorail crane, including the above-mentioned rack-and-pinion drive device. The first motor 4 and the second motor 5 of the rack-and-pinion drive device are powered by a lithium battery or a storage battery.

[0038] Exemplarily, when this embodiment is specifically used, first, a plurality of rack-and-pinion drive devices are installed on the track to ensure that the first spur gear is correctly engaged with the track rack. Then, the rack-and-pinion drive device is connected to other components of the monorail crane through a tie rod device. The power of the first motor 4 and the second motor 5 is transmitted to the first spur gear 61 through the gear transmission mechanism in the second gearbox 3, and the first spur gear 61 cooperates with the track rack to move, thereby pushing the monorail crane to move forward or backward along the track.

[0039] It should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or modify some or all of the technical solutions, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rack and pinion drive device, characterized in that, Comprising: Drive frame; Load-bearing wheel sets, which are arranged in pairs on the drive frame and are used to run on both sides of the I-shaped track; First gearbox, which is connected to the drive frame, and a first spur gear is rotatably arranged therein, and the first spur gear is used to mesh with the rack under the I-shaped track; First motor and second motor, which are respectively fixedly installed on both sides of the first gearbox and the output shafts of both are arranged in the vertical direction; Second gearbox, which is fixedly arranged under the drive frame, the output shafts of the first motor and the second motor are respectively connected to two input ends of the second gearbox, and the second gearbox is used to drive the first spur gear to rotate.

2. The rack-and-pinion drive device according to claim 1, characterized in that, The second gearbox includes a second housing and a first driving bevel gear, a second driving bevel gear, a first driven bevel gear, a second driven bevel gear, a second spur gear and a rotating shaft arranged in the second housing. The first driven bevel gear, the second spur gear and the second driven bevel gear are coaxially arranged on the rotating shaft in sequence. A first driving bevel gear meshing with the first driven bevel gear is connected to the output shaft of the first motor, a second driving bevel gear meshing with the second driven bevel gear is connected to the output shaft of the second motor, and the second spur gear meshes with the first spur gear.

3. The tooth-rack drive device according to claim 1, wherein, It further includes a braking device, the braking device is fixedly connected to the drive frame, and it includes a pair of brake blocks arranged on both sides of the I-shaped track; the braking device is configured to control the two brake blocks to clamp or release the web of the I-shaped track when it obtains an action signal.

4. The tooth-rail drive device according to claim 1, characterized in that, The first motor and the second motor adopt explosion-proof three-phase asynchronous motors.

5. The rack and pinion drive device according to claim 1, characterized in that, The first motor and the second motor adopt explosion-proof permanent magnet variable frequency integrated machines.

6. The rack and pinion drive device according to claim 1, characterized in that, One end of the first gearbox is hinged to the drive frame, and the other end is fixed to the drive frame through fasteners.

7. A toothed-rail monorail hoist, characterized in that, Comprising the tooth-rail drive device according to any one of claims 1-6.

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