Novel connecting structure of crane wheel and driving speed reducer

Abstract

The utility model relates to a novel connecting structure of a crane wheel and a driving speed reducer, which comprises a wheel, a driving motor, a bearing, an inverted U-shaped wheel seat, a bearing support seat and a driving shaft, a central hole is arranged in the middle of the wheel, bearing mounting grooves are respectively arranged at two ends of the central hole, and the driving shaft comprises an annular boss, a large cylindrical end and a small cylindrical end. A driving hole is formed in the middle of the other end of the small cylindrical end, a side plate of the inverted-U-shaped wheel seat is located between a flange plate of the bearing supporting seat and the wheel, the small cylindrical end penetrates through an inner hole in the middle of an annular step in the middle of the bearing supporting seat, and a driving end shaft of the driving motor is inserted into the driving hole of the small cylindrical end to be in driving connection. The driving shaft has the advantages that the design is ingenious, and the structure is reasonable and compact; a driving hole is formed in the small cylindrical end of the driving shaft, and a key groove of an inner flat key is machined in the driving hole; according to the concentric shaft driving speed reducer, the shaft is inserted into the driving hole of the driving shaft, so that wheels are driven.

Description

Technical Field

[0001] The utility model relates to the field of cranes, in particular to a novel connection structure between a crane wheel and a driving reducer. Background Art

[0002] Currently, there are two basic ways to connect crane wheels and drive reducers: one is an open connection, which transmits the power to the wheel's large ring gear through the driving pinion; the other is a direct drive, in which the reducer output shaft is inserted into the center of the wheel to directly drive the wheel.

[0003] Open couplings are becoming less common due to wear and noise issues caused by gear clearance. Direct drive, with a drive shaft located at the center of the wheel, requires a parallel hollow shaft reducer for installation. Parallel shaft reducers are large and expensive.

[0004] In order to solve the above technical problems, the utility model proposes a novel connection structure between a crane wheel and a driving reducer, which has an ingenious design and a reasonable and compact structure. Utility Model Content

[0005] A new type of connection structure between a crane wheel and a drive reducer, which includes a wheel, a drive motor, a bearing, an inverted U-shaped wheel seat, a bearing support seat, and a drive shaft. A center hole is provided in the middle of the wheel, and bearing mounting grooves are provided at both ends of the center hole. The drive shaft includes an annular boss, a large cylindrical end, and a small cylindrical end. An annular boss is provided at one end of the large cylindrical end, and the middle of the other end of the large cylindrical end is connected to one end of the small cylindrical end. A drive hole is designed in the middle of the other end of the small cylindrical end. The large cylindrical end is located in the center hole of the wheel and the large cylindrical end and the wheel are fixedly connected by a first flat key. The annular boss blocks the mouth of the center hole. On the outside, the small cylindrical end passes through the center hole, and a bearing is installed in the bearing mounting groove on both sides of the wheel. The inner rings of the two bearings are rotatably installed on the annular step in the middle of the bearing support seat on the corresponding side. The bearing support seats on both sides are fixed on the side plates of the inverted U-shaped wheel seat respectively. The side plates of the inverted U-shaped wheel seat are located between the flange plate of the bearing support seat and the wheel. The small cylindrical end passes through the inner hole in the middle of the annular step in the middle of the bearing support seat, and the driving end shaft of the drive motor is inserted into the driving hole of the small cylindrical end for drive connection. The drive motor is fixed on the outside of the flange plate of the bearing support seat on the corresponding side.

[0006] The outer circumferential surface of the large cylindrical end is designed with a keyway and a first flat key is installed in the keyway. A keyway is also designed in the center hole of the wheel. The large cylindrical end of the drive shaft is installed in the center hole of the wheel, and the upper end of the first flat key is stuck in the keyway of the wheel.

[0007] A keyway is provided in the driving hole of the small cylindrical end, a keyway is provided on the driving end shaft of the driving motor and a second flat key is installed in the keyway, the driving end shaft of the driving motor is inserted into the driving hole and the second flat key is inserted in the keyway of the driving hole for fixed connection.

[0008] The bearing support seat includes a flange plate, an annular protrusion and an annular step. A through hole is designed in the middle of the flange plate, an annular protrusion is designed and installed on one side of the through hole of the flange plate, and an annular step is designed on the end of the annular protrusion. The annular step is clamped in the inner ring of the bearing for fit, and the flange plate is fixedly installed on the side plate of the inverted U-shaped wheel seat for fixed installation.

[0009] An annular avoidance groove is also designed between the center hole of the wheel and the bearing installation groove.

[0010] The small cylindrical end is clearance-matched with the inner hole in the middle of the annular step.

[0011] The front end of the driving motor is also coaxially driven and fixedly connected to a reducer, and the reducer is driven and connected by inserting its driving shaft into the driving hole, and the reducer is installed on the flange plate of the bearing support seat.

[0012] The advantages of the utility model are ingenious design and reasonable and compact structure. A drive shaft is installed in the center of the crane wheel; the end of the drive shaft is flush with the bearing seat; the small cylindrical end of the drive shaft is designed with a drive hole, and the drive hole is processed with a keyway for an internal flat key; the concentric shaft drive reducer can drive the wheel by inserting the shaft into the drive hole of the drive shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present utility model.

[0014] Figure 2 It is an exploded schematic diagram of the wheel and drive shaft of the utility model.

[0015] Figure 3 It is an exploded schematic diagram of the wheel assembly of the present invention. DETAILED DESCRIPTION

[0016] Refer to the attached Figure 1-3A new type of connection structure between a crane wheel and a drive reducer, which includes a wheel 1, a drive motor 2, a bearing 3, an inverted U-shaped wheel seat 4, a bearing support seat 5, and a drive shaft 6. A center hole 11 is provided in the middle of the wheel 1, and bearing mounting grooves 7 are provided at both ends of the center hole 11. The drive shaft 6 includes an annular boss 61, a large cylindrical end 62 and a small cylindrical end 63. An annular boss 61 is provided at one end of the large cylindrical end 62, and the middle of the other end of the large cylindrical end 62 is connected to one end of the small cylindrical end 63. A drive hole 631 is designed in the middle of the other end of the small cylindrical end 63. The large cylindrical end 62 is located in the center hole of the wheel 1 and the large cylindrical end 62 is fixedly connected to the wheel 1 through a first flat key. The annular boss 61 is blocked in the middle On the outside of the mouth of the center hole, the small cylindrical end 63 passes through the center hole, and a bearing 3 is installed in the bearing mounting groove 7 on both sides of the wheel 1. The inner rings of the two bearings 3 are rotatably installed on the annular step 51 in the middle of the bearing support seat 5 on the corresponding side. The bearing support seats 5 on both sides are fixed on the side plates of the inverted U-shaped wheel seat 4 respectively. The side plates of the inverted U-shaped wheel seat 4 are located between the flange plate 52 of the bearing support seat 5 and the wheel 1. The small cylindrical end 63 passes through the inner hole in the middle of the annular step 51 in the middle of the bearing support seat 5, and the driving end shaft of the drive motor 2 is inserted into the driving hole 631 of the small cylindrical end 63 for drive connection. The drive motor 2 is fixed on the outside of the flange plate 52 of the bearing support seat 5 on the corresponding side.

[0017] The outer circumferential surface of the large cylindrical end 62 is designed with a keyway and a first flat key is installed in the keyway. A keyway is also designed in the center hole of the wheel 1. The large cylindrical end 62 of the drive shaft 6 is installed in the center hole of the wheel 1, and the upper end of the first flat key is stuck in the keyway of the wheel 1.

[0018] A keyway is provided in the driving hole 631 of the small cylindrical end 63, a keyway is provided on the driving end shaft of the driving motor 2 and a second flat key is installed in the keyway, the driving end shaft of the driving motor 2 is inserted into the driving hole 631 and the second flat key is inserted into the keyway of the driving hole 631 for fixed connection.

[0019] The bearing support seat 5 includes a flange plate 52, an annular protrusion 53 and an annular step 51. A through hole is designed in the middle of the flange plate 52. An annular protrusion 53 is designed and installed on one side of the through hole of the flange plate 52. An annular step 51 is designed at the end of the annular protrusion 53. The annular step 51 is clamped in the inner ring of the bearing 3 for fit. The flange plate 52 is fixedly installed on the side plate of the inverted U-shaped wheel seat 4 for fixed installation.

[0020] An annular avoidance groove 12 is also designed between the center hole 11 of the wheel 1 and the bearing mounting groove 7. The annular avoidance groove is designed to prevent the bearing rotation interference problem.

[0021] The small cylindrical end 63 is clearance-matched with the inner hole in the middle of the annular step 51. The clearance fit ensures that there is no relative friction loss between the small cylindrical end and the bearing support seat.

[0022] The front end of the driving motor 2 is also coaxially driven and fixedly connected to a reducer 8, and the reducer 8 is driven and connected by inserting its driving shaft into the driving hole, and the reducer 8 is installed on the flange plate of the bearing support seat.

[0023] When the utility model is used, the drive shaft is installed in the wheel through a flat key to form an integral body, and then the bearings are respectively installed on both sides of the wheel, and the two bearing support seats are respectively inserted into the inner ring of the support bearing from both sides of the inverted U-shaped wheel seat, and the bearing support seats are fixed on the inverted U-shaped wheel seat, so that the wheel can rotate freely relative to the inverted U-shaped wheel seat, and then the coaxial drive combination of the drive motor and the reducer is connected to the drive shaft, and the drive shaft of the specific reducer is inserted into the drive hole reserved for the drive shaft in the middle of the wheel, and is fixedly connected by a flat key. The drive motor, reducer and wheel realize a coaxial drive connection mode, the structure is reasonable and compact, the overall structure is small, and it is easy to install and use.

Claims

1. A new type of connection structure between crane wheels and driving reducer, characterized in that: It includes a wheel, a driving motor, a bearing, an inverted U-shaped wheel seat, a bearing support seat, and a driving shaft. A center hole is provided in the middle of the wheel, and bearing mounting grooves are provided at both ends of the center hole. The driving shaft includes an annular boss, a large cylindrical end and a small cylindrical end. An annular boss is provided at one end of the large cylindrical end, and the middle of the other end of the large cylindrical end is connected to one end of the small cylindrical end. A driving hole is designed in the middle of the other end of the small cylindrical end. The large cylindrical end is located in the center hole of the wheel and the large cylindrical end is fixedly connected to the wheel through a first flat key. The annular boss blocks the outside of the mouth of the center hole, and the small cylindrical end is connected from the middle. The center hole passes through, and a bearing is installed in the bearing mounting groove on both sides of the wheel respectively. The inner rings of the two bearings are rotatably installed on the annular step in the middle of the bearing support seat on the corresponding side. The bearing support seats on both sides are fixed on the side plates of the inverted U-shaped wheel seat respectively. The side plates of the inverted U-shaped wheel seat are located between the flange plate of the bearing support seat and the wheel. The small cylindrical end passes through the inner hole in the middle of the annular step in the middle of the bearing support seat, and the driving end shaft of the drive motor is inserted into the driving hole of the small cylindrical end for driving connection. The drive motor is fixed on the outer side of the flange plate of the bearing support seat on the corresponding side.

2. The novel crane wheel and drive reducer connection structure according to claim 1 is characterized in that: The outer circumferential surface of the large cylindrical end is designed with a keyway and a first flat key is installed in the keyway. A keyway is also designed in the center hole of the wheel. The large cylindrical end of the drive shaft is installed in the center hole of the wheel, and the upper end of the first flat key is stuck in the keyway of the wheel.

3. The novel crane wheel and drive reducer connection structure according to claim 1 is characterized in that: A keyway is provided in the driving hole of the small cylindrical end, a keyway is provided on the driving end shaft of the driving motor and a second flat key is installed in the keyway, the driving end shaft of the driving motor is inserted into the driving hole and the second flat key is inserted in the keyway of the driving hole for fixed connection.

4. The novel crane wheel and drive reducer connection structure according to claim 1 is characterized in that: The bearing support seat includes a flange plate, an annular protrusion and an annular step. A through hole is designed in the middle of the flange plate, an annular protrusion is designed and installed on one side of the through hole of the flange plate, and an annular step is designed on the end of the annular protrusion. The annular step is clamped in the inner ring of the bearing for fit, and the flange plate is fixedly installed on the side plate of the inverted U-shaped wheel seat for fixed installation.

5. The novel crane wheel and drive reducer connection structure according to claim 1 is characterized in that: An annular avoidance groove is also designed between the center hole of the wheel and the bearing installation groove.

6. The novel crane wheel and drive reducer connection structure according to claim 1 is characterized in that: The small cylindrical end is clearance-matched with the inner hole in the middle of the annular step.

7. The novel crane wheel and drive reducer connection structure according to claim 1 is characterized in that: The front end of the driving motor is also coaxially driven and fixedly connected to a reducer, and the reducer is driven and connected by inserting its driving shaft into the driving hole, and the reducer is installed on the flange plate of the bearing support seat.

Images