CN219298319U - Turntable assembly and engineering mechanical equipment - Google Patents

Abstract

The present disclosure relates to a turntable assembly and an engineering machinery device. The turntable assembly includes: a turntable body (10); the first rotation mechanism (20) is connected with the rotary table body (10) and is configured to drive the rotary table body (10) to rotate relative to the lower vehicle; and a second swing mechanism (30) connected to the turntable body (10) and configured to drive the loading operation device (40) to rotate relative to the turntable body (10); the first rotation axis (21) of the first rotation mechanism (20) and the second rotation axis (35) of the second rotation mechanism (30) are not collinear, the second rotation mechanism (30) comprises a rotation body (31) used for being connected with the loading working device (40), and at least two hinge points which are arranged at intervals along the second rotation axis (35) of the second rotation mechanism (30) are arranged between the rotation body (31) and the rotary table body (10).

Description

Turntable assembly and engineering mechanical equipment

Technical Field

The present disclosure relates to the field of engineering machinery, and in particular, to a turntable assembly and engineering machinery.

Background

The turntable is an important component in engineering machinery such as a digging machine. In some related art, the turntable is provided with a main rotation mechanism at the center, and the working device is fixed with respect to the turntable. Because the working device is generally longer, the working device protrudes out of the turntable more, on one hand, the whole machine body is longer, and the transfer transportation is inconvenient; on the other hand, some working sites are narrow, and the protruding working devices enable the turntable to not normally rotate. In the related art, some multifunctional engineering machines such as an excavating loader also begin to work by using a turntable, and a protruding working device can interfere with a front loading part in the process of rotation, so that normal operation cannot be performed.

Disclosure of Invention

In view of the foregoing, embodiments of the present disclosure provide a turntable assembly and an engineering machinery device, which can facilitate transfer transportation of the device.

In one aspect of the present disclosure, there is provided a turntable assembly for a construction machine, comprising:

a turntable body;

the first slewing mechanism is connected with the turntable body and is configured to drive the turntable body to rotate relative to the getting-off of the engineering mechanical equipment; and

the second rotation mechanism is connected with the turntable body and is configured to drive the loading working device of the engineering mechanical equipment to rotate relative to the turntable body;

the first rotation axis of the first rotation mechanism is not collinear with the second rotation axis of the second rotation mechanism, the second rotation mechanism comprises a rotation body used for being connected with the loading working device, and at least two hinge points which are arranged at intervals along the second rotation axis of the second rotation mechanism are arranged between the rotation body and the turntable body.

In some embodiments, the turntable assembly further comprises:

the first fixing plate is positioned on the top plate of the turntable body and is relatively fixed with the turntable body; and

the second fixing plate is positioned on the upper side of the first fixing plate and is relatively fixed with the turntable;

the revolving body is connected with the first fixing plate and the second fixing plate through hinge shafts respectively, and is in plane contact fit with the first fixing plate.

In some embodiments, the top plate has a first fixing hole, the first fixing plate has a second fixing hole aligned with the center of the first fixing hole, the second swing mechanism further includes a swing pin passing through the first fixing hole and the second fixing hole and fixedly connected with the swing body through a locking pin so as to rotate the swing body through rotation of the swing pin.

In some embodiments, the second swing mechanism further includes a swing reducer, the swing reducer is located on a side of the top plate away from the first fixing plate, a base of the swing reducer is fixedly connected with the first fixing plate or the top plate, and a swing support of the swing reducer is fixedly connected with the swing pin shaft.

In some embodiments, the turntable assembly further comprises:

the first rib plate is fixedly connected to the top plate; and

the second rib plates are fixedly connected to the top plate and located on two sides of the first fixing hole with the first rib plates.

In some embodiments, the second fixing plate is fixedly connected to a side wall of the first rib plate adjacent to the first fixing hole.

In some embodiments, the gyrorotor comprises:

the rotating seat is provided with a mounting hole for penetrating the rotary pin shaft and a bottom in contact fit with the plane of the first fixed plate; and

the pair of ear plates are integrally manufactured with the rotating seat;

the second fixing plate is located between the pair of ear plates and hinged with the pair of ear plates.

In some embodiments, the bottom of the swivel base has a circumferential flange having a diameter greater than the diameter of the first stationary plate.

In some embodiments, the first securing plate is fixedly connected to the top plate.

In some embodiments, the turntable assembly further comprises:

and the pressing mechanism is arranged on the turntable body and is configured to press the revolving body on the surface of the first fixed plate so as to keep the revolving body in contact with the plane of the first fixed plate when the revolving body rotates relative to the first fixed plate.

In some embodiments, the second revolving mechanism further comprises a revolving pin, and the revolving pin is fixedly connected with the revolving body through a locking pin so as to drive the revolving body to rotate through the rotation of the revolving pin; wherein, hold-down mechanism includes:

the plurality of compression pins are connected with the rotary pin shaft; and

the plurality of compression cylinders are positioned on one side, far away from the revolving body, of the top plate of the revolving body, are respectively connected with the plurality of compression cylinders and are configured to respectively drive the plurality of compression pins to move through the movement of the piston rods, so that the revolving pins apply acting force towards the first fixed plate to the revolving body through the locking pins.

In some embodiments, the swivel comprises a swivel base having a bottom in planar contact engagement with the first stationary plate, and the bottom of the swivel base has a circumferential flange; wherein, hold-down mechanism includes:

the oil cylinder mounting frame is arranged on the top plate of the turntable body; and

a plurality of hold down cylinders mounted on the cylinder mount and configured to press down the circumferential flange by movement of a piston rod.

In some embodiments, the plurality of compaction cylinders are arranged at equal angular intervals along a circumference of the turret body.

In some embodiments, the turntable assembly further comprises:

and a locking mechanism provided on the turntable body and configured to lock at least one rotational position of the rotator.

In some embodiments, the locking mechanism comprises a hydraulic ram locking mechanism and/or a mechanical locking mechanism.

In some embodiments, the hydraulic cylinder locking mechanism includes a locking cylinder disposed on a side of the top plate of the turntable body remote from the rotator, the rotator having at least one locking hole, the locking cylinder configured to effect a snap-in fixation of the at least one locking hole by movement of a piston rod.

In some embodiments, the mechanical locking mechanism comprises a locking plate, a spring, a fixed pin shaft and a flexible shaft stay wire, wherein the locking plate is hinged with a top plate of the turntable body through the fixed pin shaft, the spring is connected between the locking plate and the top plate and is used for resetting the locking plate to a position leaning against the revolving body so as to realize the position locking of the revolving body, and the flexible shaft stay wire is connected with the locking plate and is used for pulling the locking plate to rotate around the fixed pin shaft when being pulled so as to enable the locking plate to leave the position leaning against the revolving body so as to release the position locking of the revolving body.

In some embodiments, the first axis of rotation of the first turntable is less than the second axis of rotation of the second turntable.

In one aspect of the present disclosure, a work machine is provided that includes the aforementioned turntable assembly.

In some embodiments, the work machine is an excavator, crane or backhoe loader.

Therefore, according to the embodiment of the disclosure, the turntable is driven to rotate relative to the lower vehicle by the first rotation mechanism, the upper vehicle working device is driven to rotate relative to the lower vehicle by the second rotation mechanism, and the first rotation axis of the first rotation mechanism is not collinear with the second rotation axis of the second rotation mechanism. The engineering mechanical device can work under narrow working conditions such as city roadways. At least two hinge points which are arranged at intervals along a second rotation axis of the second rotation mechanism are arranged between the rotation body and the rotary table body of the second rotation mechanism, so that the strength of the second rotation mechanism is higher, and the working device can perform high-load or impact operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of an application architecture according to some embodiments of the turntable assembly of the present disclosure;

FIG. 2 is a schematic illustration of a turntable body and structures disposed thereon in accordance with some embodiments of the turntable assembly of the present disclosure;

FIG. 3 is a schematic partial structural view of an area of a second turntable in some embodiments of a turntable assembly according to the present disclosure;

FIG. 4 is a schematic cross-sectional view of a mounting structure of a second turntable and a turntable body in some embodiments of a turntable assembly according to the present disclosure;

FIG. 5 is a schematic illustration of a mounting structure of a second turntable and a turret body in a top view in some embodiments of a turret assembly according to the present disclosure;

FIG. 6 is a schematic structural view of a compression mechanism in accordance with some embodiments of the turntable assembly of the present disclosure;

FIG. 7 is a schematic view of a press mechanism in accordance with further embodiments of the turntable assembly of the present disclosure;

FIG. 8 is a schematic illustration of a locking mechanism in some embodiments of a turntable assembly according to the present disclosure;

FIG. 9 is a schematic illustration of the hydraulic ram locking mechanism of FIG. 8;

FIG. 10 is a schematic view of the mechanical locking mechanism of FIG. 8;

fig. 11 is a schematic view of the locking plate of fig. 10 in an unlocked position.

It should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale. Further, the same or similar reference numerals denote the same or similar members.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In this disclosure, when a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.

All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

Fig. 1 is a schematic illustration of an application architecture according to some embodiments of the turntable assembly of the present disclosure. Referring to fig. 1, an embodiment of the present disclosure provides a turntable assembly for a construction machine, including: the turntable body 10, the first swing mechanism 20, and the second swing mechanism 30. The first rotation mechanism 20 is connected to the turntable body 10, and is configured to drive the turntable body 10 to rotate relative to the unloading of the engineering mechanical equipment. Here, the unloading of the engineering mechanical equipment can be an automobile chassis, a caterpillar chassis or an annular track fixed on the ground, etc.

The second revolving mechanism 30 is connected to the turntable body 10, and is configured to drive the loading device 40 of the engineering machinery equipment to rotate relative to the turntable body 10. The loading mechanism 40 of the construction machine may include a boom, an excavating arm, and the like.

The first axis of rotation 21 of the first swing mechanism 20 is not collinear with the second axis of rotation 35 of the second swing mechanism 30. The turntable assembly of the double-slewing mechanism can enable the working device to rotate to the rear during the transition, so that the working device does not protrude out of the vehicle body, the length of the vehicle body is greatly reduced, and the transition transportation of equipment is facilitated. The engineering mechanical device can work under narrow working conditions such as city roadways.

In some embodiments, the distance from the first rotation axis 21 of the first swing mechanism 20 to the center of the turntable body 10 is smaller than the distance from the second rotation axis 35 of the second swing mechanism 30 to the center of the turntable body 10. That is, the first swing mechanism 20 is closer to the center of the turn table 10 than the second swing mechanism 30. This is advantageous in reducing the size of the construction machine.

The second swing mechanism 30 includes a swing body 31 for connecting the loading working device 40, and at least two hinge points are arranged between the swing body 31 and the turntable body 10 at intervals along a second rotation axis 35 of the second swing mechanism 30. At least two hinge points which are arranged at intervals along a second rotation axis of the second rotation mechanism are arranged between the rotation body and the rotary table body of the second rotation mechanism, so that the strength of the second rotation mechanism is higher, and the working device can perform high-load or impact operation.

Fig. 2 is a schematic illustration of a turntable body and structures disposed thereon in accordance with some embodiments of the turntable assembly of the present disclosure. Fig. 3 is a partial schematic view of the area of the second turntable in some embodiments of the turntable assembly according to the present disclosure. Fig. 4 is a schematic cross-sectional view of a mounting structure of a second turntable and a turntable body in some embodiments of a turntable assembly according to the present disclosure. Fig. 5 is a schematic diagram of a mounting structure of a second turntable and a turntable body in a top view in some embodiments of a turntable assembly according to the present disclosure.

Referring to fig. 2-5, in some embodiments, the turntable assembly further comprises: a first fixing plate 51 and a second fixing plate 52. The first fixing plate 51 is located on the top plate 11 of the turntable body 10 and is fixed relative to the turntable body 10. The second fixing plate 52 is located on the upper side of the first fixing plate 51 and is fixed to the turntable body 10. The revolving body 31 is connected with the first fixing plate 51 and the second fixing plate 52 through hinge shafts, and the revolving body 31 is in plane contact fit with the first fixing plate 51.

By bringing the revolving body 31 into planar contact engagement with the first fixed plate 51, the revolving body 31 is connected to the first fixed plate 51 and the second fixed portion 52 by hinge shafts, respectively. Therefore, the second slewing mechanism has higher strength, and the stress can be more uniform due to the contact and matching of the plane of the slewing body and the first fixing plate 51.

Referring to fig. 3 and 4, in some embodiments, the top plate 11 has a first fixing hole 111, and the first fixing plate 51 has a second fixing hole 511 aligned with the center of the first fixing hole 111. The second revolving mechanism 30 further comprises a revolving pin 32, and the revolving pin 32 passes through the first fixing hole 111 and the second fixing hole 511 and is fixedly connected with the revolving body 31 through the locking pin 33, so that the revolving body 31 is driven to rotate by the rotation of the revolving pin 32.

In fig. 3, the first fixing plate 51 may be fixedly coupled to the upper surface of the top plate 11 by a plurality of bolts or the like to increase the stability of the first fixing plate 51, thereby securing the stability of the rotation of the rotator 31 in planar contact therewith.

The first fixed plate 51 has a flat surface that can be brought into contact with the surface of the bottom end of the rotator 31 to provide a more stable and reliable supporting action and can slide relatively. The pivot pin 32 passes through the first fixing hole 111 of the top plate 11 and the second fixing hole 511 of the first fixing plate 51, and penetrates into the mounting hole of the rotator 31. The locking pin 33 passes through the hole wall of the mounting hole and the hole on the swivel pin shaft 32, thereby realizing the fixed connection between the locking pin 33 and the swivel body 31. A sleeve may be provided between the swivel pin 32 and the mounting hole to provide a more stable running fit between the two.

Referring to fig. 4, in some embodiments, the second swing mechanism 30 further includes a swing drive (swing driver) 34. The rotary speed reducer 34 is located at a side of the top plate 11 away from the first fixing plate 51, and the base of the rotary speed reducer 34 is fixedly connected with the first fixing plate 51 or the top plate 11, and the slewing bearing of the rotary speed reducer 34 is fixedly connected with the slewing pin shaft 32. Because the rotary speed reducer is arranged on the lower side of the top plate 11, the rotary speed reducer hardly bears supporting force and impact force, and the service life is greatly prolonged.

In some embodiments, the rotary reducer 34 may include a base, a motor, a worm, a rotary support, and the like, where the motor and the worm are disposed on the base, and the motor can drive the worm to rotate, and the rotation of the worm drives the rotary support to rotate, thereby driving the rotary pin 32 to rotate.

Referring to fig. 2-4, in some embodiments, the turntable assembly further comprises: a first gusset 61 and a second gusset 62. The first rib plate 61 is fixedly connected to the top plate 11, and the second rib plate 62 is fixedly connected to the top plate 11 and located on two sides of the first fixing hole 111 with the first rib plate 61. The first rib plates 61 and the second rib plates 52 are arranged on two sides of the first fixing hole 111, so that the strength of the position where the first fixing hole 111 is located can be effectively improved, the strength of the second slewing mechanism is improved, and larger bearing moment and impact resistance can be realized.

Referring to fig. 3, in some embodiments, the second fixing plate 52 is fixedly coupled to the side wall of the first rib 61 adjacent to the first fixing hole 111. This allows the second fixing plate 52 to be stably and reliably disposed at a position higher than the first fixing plate 51.

Referring to fig. 4 and 5, in some embodiments, the rotator 31 includes: a swivel mount 311 and a pair of ear plates 312. The rotating seat 311 is provided with a mounting hole for penetrating the rotating pin shaft 32 and a bottom matched with the first fixing plate 51 in a plane contact manner. The pair of ear plates 312 are integrally formed with the rotating base 311. The pair of ear panels 312 may include a pair of ear panels 312, or may include a plurality of pairs of ear panels 312. The second fixing plate 52 is located between the pair of ear plates 312 and is hinged to the pair of ear plates 312.

To make the revolution of the revolution body 31 more stable, referring to fig. 4, in some embodiments, the bottom of the rotation seat 311 has a circumferential flange 311a, and the diameter of the circumferential flange 311a is larger than the diameter of the first fixing plate 51. The circumferential flange 311a may be a full ring structure provided outside the rotating seat 311, or may be a half ring or a multi-half ring structure provided outside the rotating seat 311.

Fig. 6 is a schematic structural view of a pressing mechanism in accordance with some embodiments of the turntable assembly of the present disclosure. Fig. 7 is a schematic view of a pressing mechanism in accordance with further embodiments of the turntable assembly of the present disclosure. Referring to fig. 6 and 7, in some embodiments, the turntable assembly further comprises: and a compressing mechanism. The pressing mechanism is disposed on the turntable body 10 and configured to press the revolving body 31 against the surface of the first fixing plate 51, so that the revolving body 31 maintains a planar contact engagement with the first fixing plate 51 when rotating relative to the first fixing plate 51. Therefore, the working stability can be effectively increased, the problems of uneven stress caused by reduction of contact area and excessive concentration of pressure local part in the rotation process are reduced, and the strength of the second slewing mechanism is greatly increased, so that the working device can perform high-load or impact operation.

Referring to fig. 6, in some embodiments, the second swing mechanism 30 further includes a swing pin 32, and the swing pin 32 is fixedly connected to the swing body 31 through a locking pin 33, so that the swing body 31 is rotated by the rotation of the swing pin 32. The hold-down mechanism includes: a plurality of hold-down pins 71 and a plurality of hold-down cylinders 72. A plurality of hold down pins 71 are connected to the swivel pins 32. The plurality of pressing cylinders 72 are located at a side of the top plate 11 of the turntable body 10 away from the revolving body 31, and are respectively connected with the plurality of pressing cylinders 72, and are configured to respectively drive the plurality of pressing pins 71 to move by the movement of the piston rods, so that the revolving pin 32 applies a force to the revolving body 31 toward the first fixing plate 51 through the locking pin 33.

As can be seen in fig. 6, the cylinder of the hold-down cylinder 72 may be provided in the top plate 11 and fixed to the top plate 11, with the end of the piston rod 621 of the hold-down cylinder 72 facing the end 321 of the swivel pin 32. The cross-sectional dimension of the end 321 is larger than the cross-sectional dimension of the portion of the swivel pin 32 located in the mounting hole, and may be configured as a disc-shaped flange, so that the piston rods 621 of the plurality of compression cylinders 72 can each exert a downward pressure on the swivel pin 32 by pressing the end 321, thereby causing the swivel body to relatively tightly abut against the first fixing plate 51, ensuring a relatively large-area surface contact fit when the two relatively slide.

Referring to fig. 7, in other embodiments, the rotator 31 includes a rotating seat 311, the rotating seat 311 has a bottom portion that is in planar contact engagement with the first fixed plate 51, and the bottom portion of the rotating seat 311 has a circumferential flange 311a. The hold-down mechanism includes: a cylinder mount 73 and a plurality of hold down cylinders 72. The cylinder mount 73 is provided on the top plate 11 of the turntable body 10. A plurality of hold down cylinders 72 are mounted on the cylinder mount 73 and are configured to press down the circumferential flange 311a by movement of a piston rod.

In fig. 7, it can be seen that the cylinder of the hold-down cylinder 72 can be arranged on a cylinder mount 73 located on the upper side of the top plate 11. The cylinder mount 73 may be configured as a bent plate, a portion of which is fixedly connected to a portion of the top plate 11 located outside the circumferential flange 311a of the rotation seat 311, and another portion of which extends inside the circumferential flange 311a. The end of the piston rod of the hold-down cylinder 72 is opposed to the circumferential flange 311a, and the revolving body can be relatively tightly abutted against the first fixed plate 51 by applying a pressing force to the circumferential flange 311a, ensuring a large-area surface contact engagement when the two are slid relatively.

The two pressing mechanisms can be selected and arranged according to the specific form of the revolving body or the revolving pin shaft, the arrangement condition of the upper side and the lower side of the top plate 11 and other factors. In order to make the pressing force applied by the pressing mechanism more uniform in the circumferential direction and avoid the local stress from being too concentrated, in the above embodiment, the plurality of pressing cylinders 72 may be arranged at equal angular intervals along the circumferential direction of the turntable body 10. The number of the pressing cylinders 72 may be determined according to the size of the turntable body 10 and the pressing force to be applied, for example, 2, 3 or 4 clamping cylinders 72 are provided at equal angular intervals in the circumferential direction.

Fig. 8 is a schematic structural view of a locking mechanism in some embodiments of a turntable assembly according to the present disclosure. Fig. 9 is a schematic view of the hydraulic ram locking mechanism of fig. 8. Fig. 10 is a schematic view of the mechanical locking mechanism of fig. 8. Fig. 11 is a schematic view of the locking plate of fig. 10 in an unlocked position.

When the on-board work device 40 needs to be held in a certain position for work, it is necessary to ensure the stability of its work, so referring to fig. 8-11, in some embodiments the turntable assembly also includes a locking mechanism. The locking mechanism is provided on the turntable body 10 and configured to lock at least one rotational position of the rotator 31. Referring to fig. 8, in some embodiments, the locking mechanism may include a hydraulic ram locking mechanism 81 and/or a mechanical locking mechanism 82. The turntable assembly may employ a hydraulic cylinder lock mechanism 81 and a mechanical lock mechanism 82 to increase reliability and prevent operational risk from failure of one of the lock mechanisms. In other embodiments, only one of the hydraulic ram locking mechanism 81 and the mechanical locking mechanism 82 may be used.

Referring to fig. 9, in some embodiments, the hydraulic cylinder locking mechanism 81 includes a locking cylinder 811 provided on a side of the top plate 11 of the turntable body 10 remote from the rotator 31, the rotator 31 having at least one locking hole, the locking cylinder 811 being configured to achieve a plug-in fixation of the at least one locking hole by a piston rod movement.

In fig. 9, the cylinder of the lock cylinder 811 is fixedly connected to the top plate 11, and the revolving unit 31 has an extension plate 313 extending along a plane perpendicular to the rotation axis, and one or more lock holes may be provided in the extension plate 313. The piston rod of the lock cylinder 811 can be extended or retracted with respect to the cylinder, and when it is in the retracted state without being inserted into the lock hole, the rotator 31 can be rotated in the driven state, and when the piston rod is aligned with a certain lock hole and extended and entered into the lock hole, the effect of locking the rotator is achieved.

Referring to fig. 8-11, in some embodiments, the mechanical locking mechanism 82 includes a locking plate 821, a spring 823, a stationary pin 822, and a flexible shaft pull wire 824. The locking plate 821 is hinged to the top plate 11 through the fixing pin 822, and the spring 823 is connected between the locking plate 821 and the top plate 11 of the turntable body 10, and is used for resetting the locking plate 821 to a position against the revolving body 31 so as to lock the revolving body 31.

The flexible shaft stay 824 is connected to the locking plate 821, and is configured to pull the locking plate 821 to rotate about the fixed pin 822 when a tensile force is applied, so that the locking plate 821 is separated from a position abutting against the rotator 31, so as to unlock the rotator 31. When flexible shaft cable 824 is unstressed, spring 823 may hold locking plate 821 in a position against rotator 31.

In fig. 8 and 9, the revolving unit 31 has at least one standing plate 314 parallel to the rotation axis. The locking plate 821 may be configured as a triangle, one side of which may bear against one side of the riser 314 to prevent it from rotating toward the fixed pin 822. When the operator manually pulls the flexible shaft wire 824 or pulls the flexible shaft wire 824 by other means, the locking plate 821 is pulled to rotate about the fixed pin 822, thereby rotating the locking plate 821 to a position that does not limit the riser 314.

The turntable assembly of the above embodiments of the present disclosure may be used for large-sized construction machinery, such as cranes, excavators, backhoes, and the like, as well as for small-sized multi-function construction machinery. Accordingly, embodiments of the present disclosure also provide a work machine apparatus including the aforementioned turntable assembly. The work machine may be an excavator, a crane or a backhoe loader.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (20)

1. A turntable assembly for use with a work machine, the turntable assembly comprising:

a turntable body (10);

the first rotation mechanism (20) is connected with the rotary table body (10) and is configured to drive the rotary table body (10) to rotate relative to the unloading of the engineering mechanical equipment; and

the second slewing mechanism (30) is connected with the turntable body (10) and is configured to drive an upper vehicle working device (40) of the engineering mechanical equipment to rotate relative to the turntable body (10);

the first rotation axis (21) of the first rotation mechanism (20) and the second rotation axis (35) of the second rotation mechanism (30) are not collinear, the second rotation mechanism (30) comprises a rotation body (31) used for being connected with the loading working device (40), and at least two hinge points which are arranged at intervals along the second rotation axis (35) of the second rotation mechanism (30) are arranged between the rotation body (31) and the rotary table body (10).

2. The turntable assembly of claim 1, further comprising:

the first fixing plate (51) is positioned on the top plate (11) of the rotary table body (10) and is fixed relative to the rotary table body (10); and

the second fixing plate (52) is positioned on the upper side of the first fixing plate (51) and is fixed relative to the turntable body (10);

the revolving body (31) is connected with the first fixing plate (51) and the second fixing plate (52) through hinge shafts respectively, and the revolving body (31) is in plane contact fit with the first fixing plate (51).

3. Turntable assembly according to claim 2, wherein the top plate (11) has a first fixing hole (111), the first fixing plate (51) has a second fixing hole (511) aligned with the center of the first fixing hole (111), the second swivel mechanism (30) further comprises a swivel pin (32), the swivel pin (32) passes through the first fixing hole (111) and the second fixing hole (511) and is fixedly connected with the swivel body (31) by a locking pin (33) so as to rotate the swivel body (31) by rotation of the swivel pin (32).

4. A turret assembly according to claim 3, wherein the second slewing mechanism (30) further comprises a slewing gear reducer (34), the slewing gear reducer (34) is located on a side of the top plate (11) away from the first fixed plate (51), a base of the slewing gear reducer (34) is fixedly connected with the first fixed plate (51) or the top plate (11), and a slewing bearing of the slewing gear reducer (34) is fixedly connected with the slewing pin shaft (32).

5. A turret assembly according to claim 3, further comprising:

the first rib plate (61) is fixedly connected to the top plate (11); and

the second rib plates (62) are fixedly connected to the top plate (11) and are located on two sides of the first fixing hole (111) with the first rib plates (61).

6. Turntable assembly according to claim 5, wherein the second fixing plate (52) is fixedly connected to the side wall of the first rib plate (61) adjacent to the first fixing hole (111).

7. A turret assembly according to claim 3, wherein said revolving body (31) comprises:

the rotating seat (311) is provided with a mounting hole for penetrating the rotary pin shaft (32) and a bottom matched with the first fixed plate (51) in a plane contact manner; and

a pair of ear plates (312) integrally formed with the rotary seat (311);

wherein the second fixing plate (52) is positioned between the pair of ear plates (312) and hinged with the pair of ear plates (312).

8. Turntable assembly according to claim 7, characterized in that the bottom of the rotating seat (311) has a circumferential flange (311 a), the diameter of the circumferential flange (311 a) being greater than the diameter of the first fixed plate (51).

9. Turntable assembly according to claim 2, wherein the first fixing plate (51) is fixedly connected with the top plate (11).

10. The turntable assembly of claim 2, further comprising:

and a pressing mechanism, which is arranged on the turntable body (10) and is configured to press the revolving body (31) on the surface of the first fixed plate (51) so as to keep contact and fit with the plane of the first fixed plate (51) when the revolving body (31) rotates relative to the first fixed plate (51).

11. Turntable assembly according to claim 10, wherein the second swivel mechanism (30) further comprises a swivel pin (32), the swivel pin (32) being fixedly connected to the swivel body (31) by a locking pin (33) so as to rotate the swivel body (31) by rotation of the swivel pin (32); wherein, hold-down mechanism includes:

a plurality of pressing pins (71) which are connected with the rotary pin shaft (32); and

the plurality of compression oil cylinders (72) are positioned on one side, far away from the revolving body (31), of the top plate (11) of the revolving body (10), are respectively connected with the plurality of compression oil cylinders (72) and are configured to respectively drive the plurality of compression pin shafts (71) to move through the movement of piston rods so that the revolving pin shafts (32) apply acting force towards the first fixing plate (51) to the revolving body (31) through the locking pins (33).

12. Turntable assembly according to claim 10, wherein said swivel body (31) comprises a swivel seat (311), said swivel seat (311) having a bottom in planar contact engagement with said first fixed plate (51), and the bottom of said swivel seat (311) having a circumferential flange (311 a); wherein, hold-down mechanism includes:

the oil cylinder mounting frame (73) is arranged on the top plate (11) of the turntable body (10); and

a plurality of hold down cylinders (72) mounted on the cylinder mount (73) configured to press down the circumferential flange (311 a) by movement of a piston rod.

13. Turntable assembly according to claim 11 or 12, wherein the plurality of hold-down cylinders (72) are arranged at equal angular intervals along the circumference of the turntable body (10).

14. The turntable assembly of claim 1, further comprising:

and a locking mechanism provided on the turntable body (10) and configured to lock at least one rotational position of the rotator (31).

15. Turntable assembly according to claim 14, wherein the locking mechanism comprises a hydraulic cylinder locking mechanism (81) and/or a mechanical locking mechanism (82).

16. Turntable assembly according to claim 15, characterized in that the hydraulic cylinder locking mechanism (81) comprises a locking cylinder (811) arranged at the side of the top plate (11) of the turntable body (10) remote from the rotator (31), the rotator (31) having at least one locking hole, the locking cylinder (811) being configured to effect a plugging fixation of the at least one locking hole by a piston rod movement.

17. The turntable assembly according to claim 15, wherein the mechanical locking mechanism (82) comprises a locking plate (821), a spring (823), a fixed pin (822) and a flexible shaft stay wire (824), the locking plate (821) is hinged with the top plate (11) of the turntable body (10) through the fixed pin (822), the spring (823) is connected between the locking plate (821) and the top plate (11) and is used for resetting the locking plate (821) to a position against the rotator (31) so as to realize the position locking of the rotator (31), and the flexible shaft stay wire (824) is connected with the locking plate (821) and is used for pulling the locking plate (821) to rotate around the fixed pin (822) when being pulled so as to enable the locking plate (821) to leave a position against the rotator (31) so as to release the position locking of the rotator (31).

18. Turntable assembly according to claim 1, characterized in that the distance of the first rotation axis (21) of the first turntable (20) to the centre of the turntable body (10) is smaller than the distance of the second rotation axis (35) of the second turntable (30) to the centre of the turntable body (10).

19. A construction machine apparatus, comprising:

a turntable assembly as claimed in any one of claims 1 to 18.

20. The work machine of claim 19, wherein the work machine is an excavator, crane or backhoe loader.

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