CN217025141U

CN217025141U - Hoisting mechanism and crane

Info

Publication number: CN217025141U
Application number: CN202123282390.0U
Authority: CN
Inventors: 关文文; 张倩倩; 张敏
Original assignee: Sany Automobile Hoisting Machinery Co Ltd
Current assignee: Sany Automobile Hoisting Machinery Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-22
Anticipated expiration: 2031-12-24

Abstract

The utility model provides a hoisting mechanism and a crane, and relates to the technical field of engineering machinery. According to the hoisting mechanism, the motor and the speed reducer are integrated into the winding drum, so that the external space of the tail frame of the rotary table is not occupied, the volume is small, the structure is compact, the transmission efficiency is high, and other mechanisms can be conveniently and smoothly installed on the rotary table.

Description

Hoisting mechanism and crane

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a hoisting mechanism and a crane.

Background

In traditional hoist, mainly through hydraulic motor drive hoisting structure, not only the structure is complicated, and the energy consumption is high, and hydraulic oil reveals easy polluted environment. Along with the propulsion of the electromotion, partial electric drive hoisting structure has appeared at present, and its form is mostly motor and/or speed reducer external, specifically, as shown in fig. 1, current reel 1 'is installed in the inside of revolving stage tail frame 4, and current motor 2' is external in the outside of revolving stage tail frame 4, and this kind of electric drive hoisting structure installs behind the revolving stage tail frame 4 of hoist, leads to the space occupancy great, not only influences transmission efficiency, still influences the installation of other mechanisms on the revolving stage.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the above-described problems.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a hoisting mechanism, includes reel, motor and speed reducer, the reel be used for install in the revolving stage tail frame of hoist and with revolving stage tail frame rotates to be connected, the motor reaches the speed reducer coaxial set up in inside the reel, the motor for revolving stage tail frame is fixed, the motor with the input of speed reducer is connected, the output of speed reducer with the reel is connected.

The hoisting mechanism is used for being installed in a rotary table tail frame of a crane, the rotary table is a key connecting part of the crane, a crane boom, an upper vehicle control chamber, the hoisting mechanism, a swing mechanism and a counterweight are directly connected with the crane boom, the upper vehicle control chamber, the hoisting mechanism, the swing mechanism and the counterweight, and the existing electric driving hoisting structure is installed behind the rotary table tail frame, a motor and/or a speed reducer are/is located outside the rotary table tail frame, so that the space occupancy rate is large, and the interference to other mechanisms is easily caused. This hoisting mechanism integral erection is in the revolving stage tail frame of hoist, and motor and speed reducer all set up inside the reel, and under reel and revolving stage tail frame rotated the connection condition, the output shaft drive speed reducer of built-in motor rotated, and the speed reducer and then the drive reel work of winching, through all integrating motor and speed reducer inside the reel, does not occupy revolving stage tail frame's exterior space, small, compact structure, transmission efficiency is high, be convenient for other mechanisms and install smoothly on the revolving stage.

Optionally, the lifting mechanism further includes a first bearing seat and a first bearing, an outer ring of the first bearing is connected to one end of the winding drum through the first bearing seat, and an inner ring of the first bearing is fixed relative to the turntable tail frame.

Optionally, this hoisting mechanism still includes the connecting piece, the connecting piece includes first supporting shaft, the one end of first supporting shaft with the motor is connected, the other end of first supporting shaft connect in the inner circle of first bearing, just first supporting shaft with revolving stage tail frame connects.

Optionally, the inner wall of the winding drum is provided with a first inner protrusion, one end of the first bearing seat is connected with the outer ring of the first bearing, and the other end of the first bearing seat is connected with the first inner protrusion.

Optionally, the connecting member further includes an end cover, the end cover is sleeved at one end of the first support shaft extending out of the first bearing, and the end cover is connected with the turntable tail frame.

Optionally, the first support shaft and the end cover are respectively provided with a wire hole.

Optionally, the lifting mechanism further comprises a second bearing seat, a second bearing and a second support shaft, an outer ring of the second bearing is connected with the turntable tail frame through the second bearing seat, one end of the second support shaft is connected with the output end of the speed reducer or the winding drum, and the other end of the second support shaft is connected with an inner ring of the second bearing.

Optionally, the inner wall of reel still is provided with the arch in the second, the second back shaft keep away from the one end of second bearing with the output of speed reducer connect respectively in the second in the bellied both sides mutually away from each other, the second back shaft is kept away from the one end of second bearing passes through in the second arch with the reel is connected, the output of speed reducer passes through in the second arch with the reel is connected.

Optionally, the output end of the speed reducer is an output flange.

In addition, the utility model also provides a crane which comprises the hoisting mechanism.

Since the technical improvement and the technical effect of the crane are the same as those of the hoisting mechanism, the technical effect of the crane will not be described in detail.

Drawings

FIG. 1 is a schematic view of a prior art arrangement of a drum and a motor in an electrically driven hoisting structure;

fig. 2 is a schematic structural diagram of a hoisting mechanism according to an embodiment of the utility model.

Description of the reference numerals:

1. a reel; 11. a first inner protrusion; 12. a second inner protrusion; 2. a motor; 3. a speed reducer; 4. a turntable tail frame; 5. a connecting member; 51. a first support shaft; 52. an end cap; 6. a first bearing housing; 7. a first bearing; 8. a second bearing housing; 9. a second bearing; 10. a second support shaft; 1 '-existing reel, 2' -existing motor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that terms such as "left", "right", etc. in the embodiments indicate terms of orientation, and are used for simplifying description of positional relationship based on the drawings of the specification, and do not mean that the components, devices, etc. indicated in the specification must operate according to specific orientation and defined operation and method, configuration, and such terms of orientation do not constitute limitations of the present invention.

The X-axis is herein provided to denote a left-right direction, wherein a forward direction of the X-axis (i.e., the arrow of the X-axis points) represents a right direction and a reverse direction of the X-axis (i.e., the direction opposite to the forward direction of the X-axis) represents a left direction.

As shown in fig. 2, the hoisting mechanism according to the embodiment of the present invention includes a winding drum 1, a motor 2, and a speed reducer 3, where the winding drum 1 is configured to be rotatably connected in a turntable tail frame 4 of a crane, that is, the winding drum 1 is configured to be installed in the turntable tail frame 4 of the crane and is rotatably connected to the turntable tail frame 4, the motor 2 and the speed reducer 3 are coaxially disposed inside the winding drum 1, the motor 2 is fixed with respect to the turntable tail frame 4, the motor 2 is connected to an input end of the speed reducer 3, and an output end of the speed reducer 3 is connected to the winding drum 1.

In the embodiment, the hoisting mechanism is arranged in a rotary table tail frame 4 of a crane, the rotary table is a key connecting part of the crane, a cargo boom, an upper vehicle control chamber, the hoisting mechanism, a swing mechanism and a counterweight are directly connected with the crane, the existing electric drive hoisting structure is arranged behind the rotary table tail frame 4, a motor 2 and/or a speed reducer 3 are/is positioned outside the rotary table tail frame 4, the space occupancy rate is large, and interference to other mechanisms is easily caused. This hoisting mechanism integral erection is in revolving stage tail frame 4 of hoist, motor 2 and speed reducer 3 all set up inside reel 1, under reel 1 and the rotation of revolving stage tail frame 4 connection circumstances, built-in output shaft drive speed reducer 3 of motor 2 rotates, speed reducer 3 and then drive reel 1 carry out the hoist work, through with motor 2 and speed reducer 3 all integrated to reel 1 inside, do not occupy revolving stage tail frame 4's exterior space, small, compact structure, high transmission efficiency, be convenient for other mechanisms and install smoothly on the revolving stage.

In the working process, the motor 2 is preferably a servo motor, and the servo motor is easy to control and solves the contradiction of high lifting and falling speed and jogging property.

Optionally, the hoisting mechanism further comprises a first bearing seat 6 and a first bearing 7, an outer ring of the first bearing 7 is connected with one end of the winding drum 1 through the first bearing seat 6, and an inner ring of the first bearing 7 is fixed relative to the turntable tail frame 4.

In this embodiment, referring to fig. 2, the first bearing seat 6 may be fixed to the left end of the winding drum 1 by bolts, the outer ring of the first bearing 7 is mounted on the first bearing seat 6, and the left end of the winding drum 1 is supported by the bearing seat and the bearing when rotating.

Optionally, this hoisting mechanism still includes connecting piece 5, connecting piece 5 includes first supporting shaft 51, the one end of first supporting shaft 51 with motor 2 is connected, the other end of first supporting shaft 51 connect in the inner circle of first bearing 7, just first supporting shaft 51 with revolving stage tail frame 4 is connected.

In this embodiment, as shown in fig. 2, the motor 2 may be fixed at the right end of the first supporting shaft 51 through a bolt, and the left end of the first supporting shaft 51 may be fixed on the turntable tail frame 4 through a bolt, when the hoisting mechanism works, the first supporting shaft 51, the motor 2 and the inner ring of the first bearing 7 are in a stationary state, the outer ring of the first bearing 7 and the first bearing seat 6 are in a rotating state, and the motor 2 is kept in a stationary state during working, so as to ensure that the wire of the motor 2 is not wound.

Optionally, the inner wall of the winding drum 1 is provided with a first inner protrusion 11, one end of the first bearing seat 6 is connected with the outer ring of the first bearing 7, and the other end of the first bearing seat 6 is connected with the first inner protrusion 11.

In this embodiment, as shown in fig. 2, two first inner protrusions 11 are symmetrically disposed on the inner wall of the left end of the winding drum 1, the first inner protrusions 11 may be square or circular and have threaded holes, and the right end of the first bearing seat 6 may be fixed on the two first inner protrusions 11 by bolts, so that the first bearing seat 6 and the first bearing 7 are located inside the winding drum 1, thereby further improving the integration level and occupying no external space.

Optionally, the connecting member 5 further includes an end cover 52, the end cover 52 is sleeved on one end of the first support shaft 51 extending out of the first bearing 7, and the end cover 52 is connected to the turntable tail frame 4.

In this embodiment, referring to fig. 2, the end cover 52 is sleeved on the left end of the first supporting shaft 51, and the end cover 52 is fixed on the turntable tail frame 4 by bolts, so that the end cover 52 is sleeved on the first supporting shaft 51 to ensure that the first supporting shaft 51 does not move.

Optionally, the first supporting shaft 51 and the end cap 52 are respectively provided with a wire hole.

In this embodiment, as shown in fig. 2, the first support shaft 51 and the end cover 52 are provided with wire holes along the X-axis direction, and the wire holes of the first support shaft 51 and the end cover 52 are used for passing through the conducting wires of the motor 2.

Optionally, the hoisting mechanism further comprises a second bearing seat 8, a second bearing 9 and a second support shaft 10, an outer ring of the second bearing 9 is connected with the turntable tail frame 4 through the second bearing seat 8, one end of the second support shaft 10 is connected with the output end of the speed reducer 3 or the winding drum 1, and the other end of the second support shaft 10 is connected with an inner ring of the second bearing 9.

In this embodiment, as shown in fig. 2, the right end of the second bearing support 8 may be fixed on the turntable tail frame 4 by a bolt, the second bearing 9 is installed at the left end of the second bearing support 8 by an outer ring thereof, the right end of the second support shaft 10 is connected to an inner ring of the second bearing 9, the left end of the second support shaft 10 may be connected to the output end of the speed reducer 3 by a key, or the left end of the second support shaft 10 may be fixed on the winding drum 1 by a bolt, when the lifting mechanism works, the outer rings of the second bearing support 8 and the second bearing 9 are in a stationary state, and the inner rings of the second support shaft 10 and the second bearing 9 are in a rotating state.

Optionally, the inner wall of the winding drum 1 is further provided with a second inner protrusion 12, one end of the second support shaft 10, which is far away from the second bearing 9, and the output end of the speed reducer 3 are respectively connected to two opposite sides of the second inner protrusion 12, one end of the second support shaft 10, which is far away from the second bearing 9, is connected to the winding drum 1 through the second inner protrusion 12, and the output end of the speed reducer 3 is connected to the winding drum 1 through the second inner protrusion 12.

In this embodiment, as shown in fig. 2, the inner wall of the right end of the winding drum 1 is symmetrically provided with two second inner protrusions 12, each second inner protrusion 12 can be of a square structure or a circular structure, and is provided with a threaded hole, the output end of the speed reducer 3 can be fixed on the left side of the corresponding second inner protrusion 12 through a bolt, and the left end of the second support shaft 10 can be fixed on the right side of the corresponding second inner protrusion 12 through a bolt, so that the second support shaft 10, the second bearing 9 and the second bearing seat 8 are arranged along the inner wall of the turntable tail frame 4, the integration level is further improved, and the outer space of the turntable tail frame 4 is not occupied. The output of speed reducer 3 can be the output flange, and output flange accessible bolt fastening is on arch 12 in the second, and 3 accessible output flanges of speed reducer drive reel 1 rotates, and flange output has the big advantage of moment of torsion than the hub output, has promoted the moment of torsion and has risen to rise the operating efficiency.

Optionally, an output end (specifically, an output shaft) of the motor 2 is connected with an input end (specifically, an input shaft) of the speed reducer 3 through a key.

In this embodiment, the output shaft of the motor 2 is connected with the input shaft of the speed reducer 3 through a key, preferably through a spline, the spline is high in bearing capacity, good in centering performance and uniform in connection stress, and therefore the hoisting mechanism is very suitable for the hoisting mechanism.

In addition, the utility model also provides a crane, which comprises the hoisting mechanism.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims

1. The utility model provides a hoisting mechanism, its characterized in that, includes reel (1), motor (2) and speed reducer (3), reel (1) be used for install in the revolving stage tail frame (4) of hoist and with revolving stage tail frame (4) rotate to be connected, motor (2) reach speed reducer (3) coaxial set up in inside reel (1), motor (2) for revolving stage tail frame (4) are fixed, motor (2) with the input of speed reducer (3) is connected, the output of speed reducer (3) with reel (1) are connected.

2. A hoisting mechanism as claimed in claim 1, further comprising a first bearing housing (6) and a first bearing (7), the outer race of the first bearing (7) being connected to one end of the drum (1) via the first bearing housing (6), the inner race of the first bearing (7) being fixed relative to the turret tail frame (4).

3. The hoisting mechanism according to claim 2, further comprising a connecting member (5), wherein the connecting member (5) comprises a first support shaft (51), one end of the first support shaft (51) is connected with the motor (2), the other end of the first support shaft (51) is connected with the inner ring of the first bearing (7), and the first support shaft (51) is connected with the turntable tail frame (4).

4. A hoisting mechanism as claimed in claim 2, characterized in that the inner wall of the drum (1) is provided with a first inner projection (11), one end of the first bearing seat (6) being connected to the outer race of the first bearing (7), and the other end of the first bearing seat (6) being connected to the first inner projection (11).

5. The hoisting mechanism according to claim 3, wherein the connecting member (5) further comprises an end cap (52), the end cap (52) is sleeved on one end of the first support shaft (51) extending out of the first bearing (7), and the end cap (52) is connected with the turntable tail frame (4).

6. The hoisting mechanism of claim 5 wherein the first support shaft (51) and the end cap (52) are each provided with a wire hole.

7. The hoisting mechanism according to claim 1, further comprising a second bearing seat (8), a second bearing (9) and a second support shaft (10), wherein the outer ring of the second bearing (9) is connected with the turntable tail frame (4) through the second bearing seat (8), one end of the second support shaft (10) is connected with the output end of the speed reducer (3) or the reel (1), and the other end of the second support shaft (10) is connected with the inner ring of the second bearing (9).

8. The hoisting mechanism according to claim 7, wherein the inner wall of the winding drum (1) is further provided with a second inner protrusion (12), one end of the second support shaft (10) far away from the second bearing (9) and the output end of the speed reducer (3) are respectively connected to two opposite sides of the second inner protrusion (12), one end of the second support shaft (10) far away from the second bearing (9) is connected with the winding drum (1) through the second inner protrusion (12), and the output end of the speed reducer (3) is connected with the winding drum (1) through the second inner protrusion (12).

9. A hoisting mechanism as claimed in claim 7, characterized in that the output of the reduction gear (3) is an output flange.

10. A crane comprising a hoisting mechanism as claimed in any one of claims 1 to 9.