Low-noise track hoisting equipment

Abstract

The utility model belongs to the technical field of cranes, and particularly relates to low-noise track hoisting equipment. The lifting device comprises a carrying track and a lifting mechanism which is connected with the carrying track in a matched mode through a plurality of carrying trolleys. The carrying trolley comprises a trolley body; the driving assembly comprises a driving motor mounted on the vehicle body and a driving gear coaxially arranged with an output shaft of the driving motor; the two traveling wheels are arranged on the vehicle body on one side of the carrying track in parallel, and the two traveling wheels are connected with the driving gear in a matched mode through wheel gears; and the connecting lines of the rotating centers of the two wheel gears and the rotating center of the driving gear form a triangular structure. The driving gear and the two wheel gears are arranged in a triangular mode, the wheel distance between the two traveling wheels is reduced, when turning is achieved, friction noise between the gears and friction noise between the traveling wheels and a carrying track are reduced, and the problem that in the prior art, noise is large when a hoisting device turns is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to low-noise rail hoisting equipment. Background Art

[0002] Lifting equipment is one of the indispensable parts of a production workshop. It is used to move workpieces or goods quickly and accurately. In the process of lifting workpieces or goods, the lifting equipment usually uses a running trolley in conjunction with a track.

[0003] In order to ensure that the transport trolley runs smoothly on the track, the transport trolley is provided with two wheels running in parallel and synchronously. In the prior art, in order to ensure the synchronization of the two wheels, the two wheels are driven by one motor and the wheelbase is large. When the transport trolley runs on a non-straight track, that is, when turning, the friction between the transport trolley and the track produces a harsh noise. In order to solve this problem, the applicant has improved the lifting equipment. Utility Model Content

[0004] The utility model aims to overcome the defect in the prior art that a trolley generates harsh noise due to friction on a curved track, and provides a low-noise track hoisting device which reduces wheelbase and friction.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a low-noise rail hoisting device, comprising a carrying rail, a hoisting mechanism connected to the carrying rail through a plurality of carrying trolleys;

[0006] The transport vehicle comprises: a vehicle body;

[0007] A driving assembly, comprising a driving motor mounted on the vehicle body and a driving gear coaxially arranged with an output shaft of the driving motor;

[0008] Two running wheels are arranged in parallel on the vehicle body on one side of the carrying track, and both of the running wheels are connected to the driving gear through wheel gears; wherein,

[0009] The line connecting the rotation centers of the two wheel gears and the rotation center of the driving gear forms a triangular structure.

[0010] Furthermore, a line connecting the rotation centers of the two wheel gears and the rotation center of the driving gear forms an equilateral triangle structure.

[0011] Furthermore, the transport trolley further comprises at least one mating wheel, which is arranged on the vehicle body, and the mating wheel and the traveling wheel are respectively located on both sides of the transport track.

[0012] Furthermore, the mating wheels include two, and the two mating wheels correspond one-to-one to the two traveling wheels respectively.

[0013] Furthermore, the hoisting mechanism includes an electric hoist connected to the carrying trolley through a hanging bracket assembly and a hook connected to the electric hoist through a hoisting rope.

[0014] Furthermore, every two of the transport trolleys are connected to one electric hoist.

[0015] Furthermore, the bracket assembly includes a connecting beam fixedly mounted on the vehicle body by bolts and nuts, a bracket rotatably connected to the connecting beam by a first bearing, and a connecting plate fixedly arranged on the upper end surface of the electric hoist; wherein,

[0016] The connecting plate is rotatably connected to the hanging bracket.

[0017] Furthermore, the first bearing is a thrust spherical plain bearing.

[0018] Furthermore, at least one horizontal side wheel is provided on the vehicle bodies corresponding to the two sides of the carrying track, and the horizontal side wheel is rotatably mounted on the vehicle body through supporting roller bearings.

[0019] The beneficial effects of the low-noise rail hoisting equipment of the utility model are:

[0020] The two traveling wheels in the utility model are driven by a motor to ensure synchronous rotation of the two traveling wheels. The driving gear and the two wheel gears are arranged in a triangle, which shortens the wheelbase between the two traveling wheels, reduces the squeezing force between the wheel gears and the driving gears when turning, and reduces the friction force between the traveling wheels and the carrying rails when turning. That is, when turning, the friction noise between the gears and the friction noise between the traveling wheels and the carrying rails is reduced, thereby solving the problem in the prior art that the lifting device produces a large noise when turning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 It is a schematic diagram of the overall structure of the lifting equipment of an embodiment of the utility model.

[0023] Figure 2 It is a partial structural schematic diagram of the lifting equipment of an embodiment of the utility model.

[0024] Figure 3 yes Figure 1 Top view of the .

[0025] Figure 4 It is a partial structural schematic diagram of a transport trolley according to an embodiment of the utility model.

[0026] In the figure: 1. transport track, 2. transport trolley, 21. vehicle body, 22. drive assembly, 221. drive motor, 222. drive gear, 23. travel wheel, 24. wheel gear, 3. lifting mechanism, 31. bracket assembly, 311. connecting beam, 312. first bearing, 313. bracket, 314. connecting plate, 32. electric hoist, 33. hook, 4. matching wheel, 5. horizontal side wheel, 6. supporting roller bearing. DETAILED DESCRIPTION

[0027] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0028] like Figure 1-Figure 4 The specific embodiment of a low-noise rail hoisting device of the utility model shown in the figure comprises a carrying rail 1, and a hoisting mechanism 3 connected to the carrying rail 1 through a plurality of carrying trolleys 2. The carrying trolley 2 comprises a vehicle body 21, a driving assembly 22, and two running wheels 23. The driving assembly 22 comprises a driving motor 221 mounted on the vehicle body 21, and a driving gear 222 coaxially arranged with the output shaft of the driving motor 221. The two running wheels 23 are arranged in parallel on the vehicle body 21 on one side of the carrying rail 1. Both running wheels 23 are connected to the driving gear 222 through wheel gears 24, and the line connecting the rotation center of the two wheel gears 24 and the rotation center of the driving gear 222 forms a triangular structure.

[0029] As a preferred embodiment, the line connecting the rotation centers of the two wheel gears 24 and the rotation center of the driving gear 222 forms an equilateral triangle structure. Figure 2 The two traveling wheels 23 in the utility model are driven by a motor to ensure the synchronous rotation of the two traveling wheels 23. The driving gear 222 and the two wheel gears 24 are arranged in a triangle to shorten the wheelbase between the two traveling wheels 23, reduce the squeezing force between the wheel gear 24 and the driving gear 222 when turning, and reduce the friction between the traveling wheel 23 and the carrying track 1 when turning, that is, to reduce the friction noise between the gears and the friction noise between the traveling wheel 23 and the carrying track 1 when turning, thereby solving the problem of high noise in the lifting device when turning in the prior art.

[0030] It should be understood that if Figure 3 and Figure 4As shown, the transport trolley 2 also includes at least one mating wheel 4, which is arranged on the vehicle body 21, and the mating wheel 4 and the running wheel 23 are respectively located on both sides of the transport track 1. In this embodiment, there are two mating wheels 4, and the two mating wheels 4 correspond to the two running wheels 23 one by one. The two mating wheels 4 and the two running wheels 23 are respectively on both sides of the transport track 1 to ensure the stable operation of the transport trolley 2. At least one horizontal side wheel 5 is arranged on the vehicle body 21 corresponding to both sides of the transport track 1, and the horizontal side wheel 5 is rotatably mounted on the vehicle body 21 through the support roller bearing 6. Compared with the use of other bearings, the support roller bearing 6 effectively increases the rated dynamic load and the effective rated static load, and can withstand a larger horizontal load. At the same time, the thickness of the support roller bearing 6 is relatively large, which increases the contact area with the side of the track and greatly reduces the compressive stress.

[0031] In this embodiment, the lifting mechanism 3 includes an electric hoist 32 connected to the transport trolley 2 through a bracket assembly 31 and a hook 33 connected to the electric hoist 32 through a lifting rope. When in use, every two transport trolleys 2 are connected to an electric hoist 32. In order to meet the transportation needs of larger objects and to be able to run around corners on non-straight tracks, two electric hoists 32 are provided in this embodiment, and the two electric hoists 32 are connected by a connecting rod.

[0032] like Figure 2 As shown, the bracket assembly 31 includes a connecting crossbeam 311 fixedly mounted on the vehicle body 21 by bolts and nuts, a bracket 313 rotatably connected to the connecting crossbeam 311 by a first bearing 312, and a connecting plate 314 fixedly arranged on the upper end surface of the electric hoist 32. The connecting plate 314 is rotatably connected to the bracket 313. It should be further explained that in this embodiment, the first bearing 312 adopts a thrust spherical bearing, which is more suitable for tilting and rotating motion because the spherical bearing can withstand radial and axial forces. When the trolley is turning horizontally, the spherical bearing can offset the force caused by the horizontal direction steering, thereby effectively reducing noise.

[0033] In this embodiment, the driving gear 222 and the two wheel gears 24 are arranged in a triangle to shorten the wheelbase between the two traveling wheels 23, and the first bearing 312 is configured to be more suitable for the joint action of the thrust joint bearing for tilting and rotating motion. This greatly reduces the friction noise between the gears and the friction noise between the traveling wheels 23 and the carrying track 1 when the lifting device is turning. The overall structure is simple and can be modified on the basis of the original trolley, which is relatively convenient.

[0034] It should be understood that any electric hoist 32 and hook 33 that can be thought of by a person skilled in the art can be applied to the present embodiment, and the specific structures of the electric hoist 32 and hook 33 will not be described in detail here.

[0035] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A low-noise rail hoisting equipment, characterized in that: It comprises a transport track (1), and a hoisting mechanism (3) connected to the transport track (1) via a plurality of transport trolleys (2); The transport vehicle (2) comprises: a vehicle body (21); A driving assembly (22), comprising a driving motor (221) mounted on the vehicle body (21), and a driving gear (222) coaxially arranged with an output shaft of the driving motor (221); Two running wheels (23) are arranged in parallel on the vehicle body (21) on one side of the transport track (1), and both of the running wheels (23) are connected to the driving gear (222) through wheel gears (24); wherein: The line connecting the rotation centers of the two wheel gears (24) and the rotation center of the driving gear (222) forms a triangular structure.

2. A low-noise rail hoisting equipment according to claim 1, characterized in that: The line connecting the rotation centers of the two wheel gears (24) and the rotation center of the driving gear (222) forms an equilateral triangle structure.

3. The low-noise rail hoisting equipment according to claim 1, characterized in that: The transport trolley (2) further comprises at least one mating wheel (4) which is arranged on the vehicle body (21), and the mating wheel (4) and the running wheel (23) are respectively located on two sides of the transport track (1).

4. A low-noise rail hoisting equipment according to claim 3, characterized in that: The matching wheels (4) include two, and the two matching wheels (4) correspond one-to-one to the two traveling wheels (23) respectively.

5. The low-noise rail hoisting equipment according to claim 1, characterized in that: The hoisting mechanism (3) comprises an electric hoist (32) connected to the transport trolley (2) via a hanging bracket assembly (31) and a hook (33) connected to the electric hoist (32) via a hoisting rope.

6. The low-noise rail hoisting equipment according to claim 5, characterized in that: Every two of the transport trolleys (2) are connected to one electric hoist (32).

7. The low-noise rail hoisting equipment according to claim 6, characterized in that: The hanger assembly (31) comprises a connecting crossbeam (311) fixedly mounted on the vehicle body (21) by means of bolts and nuts, a hanger (313) rotatably connected to the connecting crossbeam (311) by means of a first bearing (312), and a connecting plate (314) fixedly disposed on the upper end surface of the electric hoist (32); wherein: The connecting plate (314) is rotatably connected to the hanging bracket (313).

8. The low-noise rail hoisting equipment according to claim 7, characterized in that: The first bearing (312) is a thrust spherical plain bearing.

9. A low-noise rail hoisting equipment according to any one of claims 1 to 8, characterized in that: At least one horizontal side wheel (5) is provided on the vehicle bodies (21) corresponding to the two sides of the transport track (1), and the horizontal side wheel (5) is rotatably mounted on the vehicle body (21) via supporting roller bearings (6).

Images