Turret assembly and engineering machine device

Abstract

This disclosure relates to a turntable assembly and an engineering machinery device. The turntable assembly for the engineering machinery device includes: a turntable body (10); a first rotary mechanism (20) connected to the turntable body (10) and configured to drive the turntable body (10) to rotate relative to the lower part of the engineering machinery device; and a second rotary mechanism (30) connected to the turntable body (10) and configured to drive the upper working device (40) of the engineering machinery device to rotate relative to the turntable body (10); wherein the rotation axis (21) of the first rotary mechanism (20) and the rotation axis (35) of the second rotary mechanism (30) are not collinear, the second rotary mechanism (30) includes a rotary body (31) for connecting the upper working device (40), and the rotary body (31) and the turntable body (10) have at least two hinge points spaced apart along the rotation axis (35) of the second rotary mechanism (30).

Description

Technical Field

[0001] This disclosure relates to the field of construction machinery, and more particularly to a turntable assembly and construction machinery equipment. Background Technology

[0002] The turntable is a crucial component of excavators and other construction machinery. In some related technologies, the turntable has a central main slewing mechanism, with the working device fixed in position relative to the turntable. Since the working device is generally quite long, it protrudes significantly from the turntable. This results in a longer overall machine body, making transportation difficult; furthermore, in some confined work areas, the protruding working device prevents the turntable from rotating properly. In some multi-functional construction machinery, such as backhoe loaders, turntables are also being used. However, the protruding working device can interfere with the front loading section during rotation, hindering normal operation. Summary of the Invention

[0003] In view of this, the present disclosure provides a turntable assembly and engineering machinery equipment, which can facilitate the relocation and transportation of equipment.

[0004] In one aspect of this disclosure, a turntable assembly for engineering machinery is provided, comprising:

[0005] Turntable body;

[0006] A first slewing mechanism, connected to the turntable body, is configured to drive the turntable body to rotate relative to the lower part of the engineering machinery equipment; and

[0007] The second rotary mechanism, connected to the turntable body, is configured to drive the upper working device of the engineering machinery equipment to rotate relative to the turntable body;

[0008] Wherein, the rotation axis of the first rotary mechanism is not collinear with the rotation axis of the second rotary mechanism, the second rotary mechanism includes a rotary body for connecting the upper working device, and the rotary body and the turntable body have at least two hinge points arranged at intervals along the rotation axis of the second rotary mechanism.

[0009] In some embodiments, the turntable assembly further includes:

[0010] A first fixed plate is located on the top plate of the turntable body and is fixed relative to the turntable body; and

[0011] The second fixing plate is located above the first fixing plate and is fixed relative to the turntable body;

[0012] The rotating body is connected to the first fixed plate and the second fixed plate respectively via hinges, and the rotating body is in planar contact with the first fixed plate.

[0013] 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, and the second rotating mechanism further includes a rotating pin, which passes through the first fixing hole and the second fixing hole and is fixedly connected to the rotating body by a locking pin, so that the rotating body can be driven to rotate by the rotation of the rotating pin.

[0014] In some embodiments, the second rotary mechanism further includes a rotary reducer located on the side of the top plate away from the first fixed plate, and the base of the rotary reducer is fixedly connected to the first fixed plate or the top plate, and the rotary bearing of the rotary reducer is fixedly connected to the rotary pin.

[0015] In some embodiments, the turntable assembly further includes:

[0016] The first stiffening plate is fixedly connected to the top plate; and

[0017] The second stiffener is fixedly connected to the top plate and is located on both sides of the first stiffener and the first stiffener at the first fixing hole.

[0018] In some embodiments, the second fixing plate is fixedly connected to the side wall of the first rib adjacent to the first fixing hole.

[0019] In some embodiments, the rotating body includes:

[0020] A rotating base having a mounting hole for the rotary pin to pass through and a bottom that contacts and mates with the plane of the first fixed plate; and

[0021] A pair of ear plates are integrally formed with the rotating seat;

[0022] The second fixing plate is located between the paired ear plates and is hinged to the paired ear plates.

[0023] In some embodiments, the bottom of the rotating seat has a circumferential flange, the diameter of which is larger than the diameter of the first fixing plate.

[0024] In some embodiments, the first fixing plate is fixedly connected to the top plate.

[0025] In some embodiments, the turntable assembly further includes:

[0026] A clamping mechanism, disposed on the turntable body, is configured to press the rotating body against the surface of the first fixed plate so that the rotating body maintains planar contact with the first fixed plate when rotating relative to the first fixed plate.

[0027] In some embodiments, the second rotary mechanism further includes a rotary pin, which is fixedly connected to the rotary body via a locking pin, so that the rotary body can be rotated by the rotation of the rotary pin; wherein, the clamping mechanism includes:

[0028] Multiple clamping pins are all connected to the rotary pin; and

[0029] Multiple clamping cylinders are located on the top plate of the turntable away from the rotating body, and are respectively connected to the multiple clamping cylinders. They are configured to drive the multiple clamping pins to move through the movement of the piston rod, so that the rotating pins apply a force toward the first fixed plate to the rotating body through the locking pin.

[0030] In some embodiments, the rotating body includes a rotating seat having a bottom that contacts and engages with the plane of the first fixed plate, and the bottom of the rotating seat has a circumferential flange; wherein, the clamping mechanism includes:

[0031] The cylinder mounting bracket is installed on the top plate of the turntable body; and

[0032] Multiple clamping cylinders, mounted on the cylinder mounting bracket, are configured to press the circumferential flange downward by the movement of a piston rod.

[0033] In some embodiments, the plurality of clamping cylinders are arranged at equal angular intervals along the circumference of the turntable.

[0034] In some embodiments, the turntable assembly further includes:

[0035] A locking mechanism is provided on the turntable body and configured to lock at least one rotational position of the rotating body.

[0036] In some embodiments, the locking mechanism includes a hydraulic cylinder locking mechanism and / or a mechanical locking mechanism.

[0037] In some embodiments, the hydraulic cylinder locking mechanism includes a locking cylinder disposed on the top plate of the turntable body on the side away from the rotating body, the rotating body having at least one locking hole, and the locking cylinder being configured to achieve insertion and fixation of the at least one locking hole by piston rod movement.

[0038] In some embodiments, the mechanical locking mechanism includes a locking plate, a spring, a fixed pin, and a flexible shaft cable. The locking plate is hinged to the top plate via the fixed pin. The spring is connected between the locking plate and the top plate to reset the locking plate to a position against the rotating body, thereby locking the position of the rotating body. The flexible shaft cable is connected to the locking plate and is used to pull the locking plate around the fixed pin when subjected to tension, so that the locking plate moves away from the position against the rotating body, thereby releasing the position lock of the rotating body.

[0039] In some embodiments, the distance from the rotation axis of the first rotary mechanism to the center of the turntable is less than the distance from the rotation axis of the second rotary mechanism to the center of the turntable.

[0040] In one aspect of this disclosure, an engineering machinery device is provided, including the aforementioned turntable assembly.

[0041] In some embodiments, the engineering machinery equipment is an excavator, a crane, or a backhoe loader.

[0042] Therefore, according to the embodiments of this disclosure, the turntable body rotates relative to the lower vehicle via the first rotary mechanism, and the upper vehicle working device rotates relative to the lower vehicle via the second rotary mechanism. Furthermore, the rotation axis of the first rotary mechanism and the rotation axis of the second rotary mechanism are not collinear. This double-rotation mechanism turntable assembly allows the working device to rotate to the rear during relocation, thus preventing it from protruding from the vehicle body and significantly reducing the vehicle length, thereby facilitating equipment relocation and transportation. This also enables the construction machinery to operate in narrow working conditions such as urban alleyways. Providing at least two hinge points spaced along the rotation axis of the second rotary mechanism between the rotating body and the turntable body increases the strength of the second rotary mechanism, allowing the working device to perform high-load or impact-prone operations. Attached Figure Description

[0043] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0044] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0045] Figure 1 This is a schematic diagram of the application structure of some embodiments of the turntable component according to the present disclosure;

[0046] Figure 2 This is a schematic diagram of the turntable body and the structure disposed thereon according to some embodiments of the turntable assembly of this disclosure;

[0047] Figure 3This is a partial structural schematic diagram of the area where the second rotary mechanism is located, according to some embodiments of the turntable assembly of this disclosure;

[0048] Figure 4 This is a cross-sectional schematic diagram of the mounting structure of the second rotary mechanism and the turntable body according to some embodiments of the turntable assembly of this disclosure;

[0049] Figure 5 This is a schematic diagram of the mounting structure of the second rotary mechanism and the turntable body in some embodiments of the turntable assembly according to the present disclosure, viewed from a top view.

[0050] Figure 6 This is a schematic diagram of the clamping mechanism in some embodiments of the turntable assembly according to this disclosure;

[0051] Figure 7 This is a structural schematic diagram of the clamping mechanism according to some other embodiments of the turntable assembly of this disclosure;

[0052] Figure 8 This is a structural schematic diagram of the locking mechanism according to some embodiments of the turntable assembly of this disclosure;

[0053] Figure 9 yes Figure 8 Schematic diagram of the locking mechanism of the hydraulic cylinder;

[0054] Figure 10 yes Figure 8 A schematic diagram of the mechanical locking mechanism;

[0055] Figure 11 yes Figure 10 A diagram showing the locking plate in the unlocked position.

[0056] It should be understood that the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components. Detailed Implementation

[0057] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0058] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0059] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0060] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0061] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0062] Figure 1 This is a schematic diagram illustrating the application structure of some embodiments of the turntable component according to this disclosure. (See reference) Figure 1 This disclosure provides a turntable assembly for construction machinery, including a turntable body 10, a first rotation mechanism 20, and a second rotation 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 undercarriage of the construction machinery. Here, the undercarriage of the construction machinery can be a car chassis, a tracked chassis, or a circular track fixed to the ground, etc.

[0063] The second slewing mechanism 30 is connected to the turntable 10 and is configured to drive the loading device 40 of the construction machinery equipment to rotate relative to the turntable 10. Here, the loading device 40 of the construction machinery equipment may include a crane boom, excavator boom, etc.

[0064] The rotation axis 21 of the first slewing mechanism 20 is not collinear with the rotation axis 35 of the second slewing mechanism 30. This double-slewing mechanism's turntable assembly allows the working device to rotate to the rear during relocation, thus preventing it from protruding from the vehicle body and significantly reducing the vehicle's length, thereby facilitating equipment relocation and transportation. This also enables construction machinery to operate in narrow working conditions such as urban alleyways.

[0065] In some embodiments, the distance from the rotation axis 21 of the first rotary mechanism 20 to the center of the turntable 10 is less than the distance from the rotation axis 35 of the second rotary mechanism 30 to the center of the turntable 10. That is, the first rotary mechanism 20 is closer to the center of the turntable 10 than the second rotary mechanism 30. This is beneficial for reducing the size of the engineering machinery.

[0066] The second rotary mechanism 30 includes a rotary body 31 for connecting the upper working device 40. The rotary body 31 and the turntable body 10 have at least two hinge points spaced apart along the rotation axis 35 of the second rotary mechanism 30. Providing at least two hinge points spaced apart along the rotation axis of the second rotary mechanism between the rotary body and the turntable body increases the strength of the second rotary mechanism, enabling the working device to perform high-load or impact-prone operations.

[0067] Figure 2 This is a schematic diagram of the turntable body and the structure disposed thereon, according to some embodiments of the turntable assembly of this disclosure. Figure 3 This is a partial structural diagram of the area where the second rotary mechanism is located, according to some embodiments of the turntable assembly of this disclosure. Figure 4 This is a cross-sectional schematic diagram of the mounting structure of the second rotary mechanism and the turntable body according to some embodiments of the turntable assembly of this disclosure. Figure 5 This is a schematic diagram of the mounting structure of the second rotary mechanism and the turntable body in some embodiments of the turntable assembly according to the present disclosure, viewed from a top angle.

[0068] refer to Figures 2-5 In some embodiments, the turntable assembly further includes 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 above the first fixing plate 51 and is fixed relative to the turntable body 10. The rotating body 31 is connected to the first fixing plate 51 and the second fixing plate 52 respectively via hinges, and the rotating body 31 has planar contact with the first fixing plate 51.

[0069] By making the rotating body 31 contact the plane of the first fixed plate 51, and by connecting the rotating body 31 to the first fixed plate 51 and the second fixed part 52 via hinges, the second rotating mechanism can have greater strength, and the contact between the plane of the rotating body and the first fixed plate 51 can make the force distribution more uniform.

[0070] refer to Figure 3 and Figure 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 rotating mechanism 30 further includes a rotating pin 32, which passes through the first fixing hole 111 and the second fixing hole 511, and is fixedly connected to the rotating body 31 by a locking pin 33, so that the rotation of the rotating pin 32 drives the rotating body 31 to rotate.

[0071] exist Figure 3 In this process, the first fixing plate 51 can be fixedly connected to the upper surface of the top plate 11 by multiple bolts and other connecting parts to increase the stability of the first fixing plate 51, thereby ensuring the stability of the rotation of the rotating body 31 in contact with its plane.

[0072] The first fixing plate 51 has a flat surface that can contact the bottom surface of the rotating body 31 to provide more stable and reliable support, and can slide relative to it. The rotating pin 32 passes through the first fixing hole 111 on the top plate 11 and the second fixing hole 511 on the first fixing plate 51, and extends into the mounting hole of the rotating body 31. The locking pin 33 passes through the hole wall of the mounting hole and the hole on the rotating pin 32, thereby realizing the fixed connection between the locking pin 33 and the rotating body 31. A sleeve can be provided between the rotating pin 32 and the mounting hole to make the rotational fit between the two more stable.

[0073] refer to Figure 4 In some embodiments, the second slewing mechanism 30 further includes a slewing driver 34. The slewing driver 34 is located on the side of the top plate 11 away from the first fixed plate 51, and the base of the slewing driver 34 is fixedly connected to the first fixed plate 51 or the top plate 11. The slewing bearing of the slewing driver 34 is fixedly connected to the slewing pin 32. Because the slewing driver is located on the lower side of the top plate 11, it bears almost no supporting force or impact force, greatly increasing its service life.

[0074] In some embodiments, the rotary reducer 34 may include a base, a motor, a worm gear, and a slewing bearing, etc. The motor and the worm gear are mounted on the base. The motor can drive the worm gear to rotate, and the rotation of the worm gear drives the slewing bearing to rotate, thereby driving the slewing pin 32 to rotate.

[0075] refer to Figures 2-4 In some embodiments, the turntable assembly further includes a first stiffener 61 and a second stiffener 62. The first stiffener 61 is fixedly connected to the top plate 11, and the second stiffener 62 is fixedly connected to the top plate 11, and is located on both sides of the first fixing hole 111. Providing the first stiffener 61 and the second stiffener 62 on both sides of the first fixing hole 111 can effectively improve the strength at the location of the first fixing hole 111, thereby improving the strength of the second rotating mechanism and achieving greater load-bearing torque and impact resistance.

[0076] refer to Figure 3 In some embodiments, the second fixing plate 52 is fixedly connected to the side wall of the first stiffening plate 61 adjacent to the first fixing hole 111. This allows the second fixing plate 52 to be stably and reliably positioned above the first fixing plate 51.

[0077] refer to Figure 4 and Figure 5 In some embodiments, the rotating body 31 includes a rotating base 311 and a pair of ear plates 312. The rotating base 311 has a mounting hole for the rotating pin 32 to pass through and a bottom that engages with the plane of the first fixing plate 51. The pair of ear plates 312 are integrally formed with the rotating base 311. The pair of ear plates 312 may include a pair of ear plates 312 or multiple pairs of ear plates 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.

[0078] To make the rotation of rotating body 31 more stable, refer to Figure 4 In some embodiments, the bottom of the rotating seat 311 has a circumferential flange 311a, the diameter of which is larger than the diameter of the first fixing plate 51. The circumferential flange 311a can be a full ring structure disposed on the outside of the rotating seat 311, or a semi-ring or multi-semi-ring structure disposed on the outside of the rotating seat 311, etc.

[0079] Figure 6 This is a structural schematic diagram of the clamping mechanism according to some embodiments of the turntable assembly of this disclosure. Figure 7 This is a schematic diagram of the clamping mechanism in some other embodiments of the turntable assembly according to this disclosure. (See reference) Figure 6 and Figure 7In some embodiments, the turntable assembly further includes a clamping mechanism. The clamping mechanism is disposed on the turntable body 10 and configured to press the rotating body 31 against the surface of the first fixed plate 51, so that the rotating body 31 maintains planar contact with the first fixed plate 51 when rotating relative to it. This effectively increases operational stability, reduces uneven force distribution caused by reduced contact area and excessive local pressure concentration during rotation, thereby greatly increasing the strength of the second rotating mechanism and enabling the working device to perform high-load or impact-prone operations.

[0080] refer to Figure 6 In some embodiments, the second rotary mechanism 30 further includes a rotary pin 32, which is fixedly connected to the rotary body 31 via a locking pin 33, so that the rotary body 31 can be rotated by the rotation of the rotary pin 32. The clamping mechanism includes a plurality of clamping pins 71 and a plurality of clamping cylinders 72. The plurality of clamping pins 71 are all connected to the rotary pins 32. The plurality of clamping cylinders 72 are located on the side of the top plate 11 of the turntable 10 away from the rotary body 31, and are respectively connected to the plurality of clamping cylinders 72, and are configured to drive the plurality of clamping pins 71 to move by the movement of the piston rod, so that the rotary pins 32 apply a force toward the first fixed plate 51 to the rotary body 31 via the locking pin 33.

[0081] exist Figure 6 As can be seen, the cylinder of the clamping cylinder 72 can be mounted on the top plate 11 and fixed to the top plate 11. The end of the piston rod 621 of the clamping cylinder 72 is directly opposite the end 321 of the rotary pin 32. The cross-sectional dimension of this end 321 is larger than the cross-sectional dimension of the part of the rotary pin 32 located in the mounting hole. It can be set as a disc-shaped flange so that the piston rods 621 of multiple clamping cylinders 72 can apply downward pressure to the rotary pin 32 by pressing against this end 321, thereby making the rotating body relatively tightly pressed against the first fixed plate 51, ensuring a large surface contact fit when the two slide relative to each other.

[0082] refer to Figure 7 In other embodiments, the rotating body 31 includes a rotating seat 311 having a bottom that contacts and engages with the plane of the first fixed plate 51, and the bottom of the rotating seat 311 has a circumferential flange 311a. The clamping mechanism includes a cylinder mounting bracket 73 and a plurality of clamping cylinders 72. The cylinder mounting bracket 73 is disposed on the top plate 11 of the turntable body 10. The plurality of clamping cylinders 72 are mounted on the cylinder mounting bracket 73 and are configured to press the circumferential flange 311a downward by the movement of a piston rod.

[0083] exist Figure 7As can be seen, the cylinder barrel of the clamping cylinder 72 can be mounted on the cylinder mounting bracket 73 located on the upper side of the top plate 11. The cylinder mounting bracket 73 can be constructed as a bent plate, one part of which is fixedly connected to the portion of the top plate 11 located on the outer side of the circumferential flange 311a of the rotating seat 311, and the other part extends to the inner side of the circumferential flange 311a. The end of the piston rod of the clamping cylinder 72 faces the circumferential flange 311a, and by applying a compressive force to the circumferential flange 311a, the rotating body can be pressed tightly against the first fixed plate 51, ensuring a large surface contact fit when the two slide relative to each other.

[0084] The two clamping mechanisms described above can be selected and configured based on factors such as the specific shape of the rotating body or rotating pin used, and the arrangement of the upper and lower sides of the top plate 11. To ensure that the clamping force applied by the clamping mechanism is more uniform in the circumferential direction and to avoid excessive local force concentration, in the above embodiment, the plurality of clamping cylinders 72 can be arranged at equal angular intervals along the circumference of the turntable body 10. The number of clamping cylinders 72 can be determined according to the size of the turntable body 10 and the required clamping force; for example, two, three, or four clamping cylinders 72 can be arranged at equal angular intervals along the circumference.

[0085] Figure 8 This is a structural schematic diagram of the locking mechanism according to some embodiments of the turntable assembly of this disclosure. Figure 9 yes Figure 8 A schematic diagram of the locking mechanism of the hydraulic cylinder. Figure 10 yes Figure 8 A schematic diagram of the mechanical locking mechanism. Figure 11 yes Figure 10 A diagram showing the locking plate in the unlocked position.

[0086] When the onboard working device 40 needs to be kept in a certain position for operation, it is necessary to ensure the stability of its operation. Therefore, refer to Figures 8-11 In some embodiments, the turntable assembly further includes a locking mechanism. The locking mechanism is disposed on the turntable body 10 and configured to lock at least one rotational position of the rotating body 31. (See reference...) Figure 8 In some embodiments, the locking mechanism may include a hydraulic cylinder locking mechanism 81 and / or a mechanical locking mechanism 82. The turntable assembly may employ both a hydraulic cylinder locking mechanism 81 and a mechanical locking mechanism 82 to increase reliability and prevent operational risks due to the failure of one locking mechanism. In other embodiments, only one of the hydraulic cylinder locking mechanism 81 and the mechanical locking mechanism 82 may be used.

[0087] refer to Figure 9In some embodiments, the hydraulic cylinder locking mechanism 81 includes a locking cylinder 811 disposed on the top plate 11 of the turntable body 10 away from the rotating body 31, the rotating body 31 having at least one locking hole, and the locking cylinder 811 being configured to achieve insertion and fixation of the at least one locking hole by piston rod movement.

[0088] exist Figure 9 In the design, the cylinder of the locking cylinder 811 is fixedly connected to the top plate 11. The rotating body 31 has an extension plate 313 extending along a plane perpendicular to the axis of rotation, and one or more locking holes can be provided on the extension plate 313. The piston rod of the locking cylinder 811 can extend or retract relative to the cylinder. When it is in the retracted state and not inserted into the locking hole, the rotating body 31 can rotate when driven. When the piston rod aligns with a locking hole and extends into the locking hole, the function of locking the rotating body is achieved.

[0089] refer to Figures 8-11 In some embodiments, the mechanical locking mechanism 82 includes a locking plate 821, a spring 823, a fixing pin 822, and a flexible shaft pull wire 824. The locking plate 821 is hinged to the top plate 11 via the fixing pin 822, and the spring 823 is connected between the locking plate 821 and the top plate 11 to reset the locking plate 821 to the position abutting against the rotating body 31, thereby locking the position of the rotating body 31.

[0090] The flexible shaft cable 824 is connected to the locking plate 821 and is used to pull the locking plate 821 around the fixed pin 822 when subjected to tension, so that the locking plate 821 moves away from the position abutting the rotating body 31, thereby releasing the position lock of the rotating body 31. When the flexible shaft cable 824 is not under force, the spring 823 can keep the locking plate 821 in the position abutting the rotating body 31.

[0091] exist Figure 8 and Figure 9 In the rotating body 31, there is at least one upright plate 314 parallel to the axis of rotation. A locking plate 821 may be configured as a triangular plate, one side of which may abut against one side of the upright plate 314 to prevent it from rotating toward the fixing pin 822. When the operator manually pulls the flexible shaft cable 824 or pulls the flexible shaft cable 824 via other means, the locking plate 821 is pulled to rotate around the fixing pin 822, thereby rotating the locking plate 821 to a position that does not restrict the upright plate 314.

[0092] The turntable assemblies of the above embodiments of this disclosure can be used in large-scale construction machinery equipment, such as cranes, excavators, and backhoe loaders, as well as in small, multi-functional construction machinery. Therefore, embodiments of this disclosure also provide a construction machinery device including the aforementioned turntable assembly. The construction machinery device can be an excavator, crane, or backhoe loader.

[0093] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0094] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A turntable assembly for engineering machinery equipment, characterized in that, include: Turntable body (10); The first slewing mechanism (20) is connected to the turntable body (10) and is configured to drive the turntable body (10) to rotate relative to the lower part of the engineering machinery equipment; and The second rotary mechanism (30) is connected to the turntable body (10) and is configured to drive the upper working device (40) of the engineering machinery equipment to rotate relative to the turntable body (10); Wherein, the rotation axis (21) of the first rotary mechanism (20) is not collinear with the rotation axis (35) of the second rotary mechanism (30), the second rotary mechanism (30) includes a rotary body (31) for connecting the upper working device (40), and the rotary body (31) and the turntable body (10) have at least two hinge points arranged at intervals along the rotation axis (35) of the second rotary mechanism (30); The turntable assembly for engineering machinery equipment also includes: The first fixed plate (51) is located on the top plate (11) of the turntable body (10) and is fixed relative to the turntable body (10); and A pressing mechanism is provided on the turntable body (10) and is configured to press the rotating body (31) against the surface of the first fixed plate (51) so that the rotating body (31) maintains planar contact with the first fixed plate (51) when rotating relative to the first fixed plate (51); The second rotary mechanism (30) further includes a rotary pin (32), which is fixedly connected to the rotary body (31) via a locking pin (33) so that the rotary body (31) can be rotated by the rotation of the rotary pin (32); wherein the clamping mechanism includes: Multiple clamping pins are connected to the rotary pin (32); and Multiple clamping cylinders (72) are located on the side of the top plate (11) of the turntable body (10) away from the rotating body (31) and are respectively connected to the multiple clamping pins. They are configured to drive the multiple clamping pins to move by the movement of the piston rod, so that the rotating pins (32) apply a force toward the first fixed plate (51) to the rotating body (31) through the locking pin (33).

2. The turntable assembly according to claim 1, characterized in that, Also includes: The second fixing plate (52) is located on the upper side of the first fixing plate (51) and is fixed relative to the turntable body (10); The rotating body (31) is connected to the first fixed plate (51) and the second fixed plate (52) respectively through hinges, and the rotating body (31) is in planar contact with the first fixed plate (51).

3. The turntable assembly according to claim 2, characterized in that, 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), and the second rotating mechanism (30) further includes a rotating pin (32), the rotating pin (32) passes through the first fixing hole (111) and the second fixing hole (511), and is fixedly connected to the rotating body (31) by a locking pin (33), so that the rotating body (31) can be driven to rotate by the rotation of the rotating pin (32).

4. The turntable assembly according to claim 3, characterized in that, The second rotary mechanism (30) further includes a rotary reducer (34), which is located on the side of the top plate (11) away from the first fixed plate (51), and the base of the rotary reducer (34) is fixedly connected to the first fixed plate (51) or the top plate (11), and the rotary bearing of the rotary reducer (34) is fixedly connected to the rotary pin (32).

5. The turntable assembly according to claim 3, characterized in that, Also includes: The first stiffening plate (61) is fixedly connected to the top plate (11); and The second stiffener (62) is fixedly connected to the top plate (11) and is located on both sides of the first stiffener (61) and the first stiffener (61).

6. The turntable assembly according to claim 5, characterized in that, The second fixing plate (52) is fixedly connected to the side wall of the first stiffening plate (61) adjacent to the first fixing hole (111).

7. The turntable assembly according to claim 3, characterized in that, The rotating body (31) includes: The rotating base (311) has a mounting hole for the rotary pin (32) to pass through and a bottom that contacts and mates with the plane of the first fixing plate (51); and The pair of ear plates (312) are integrally formed with the rotating seat (311); The second fixing plate (52) is located between the pair of ear plates (312) and is hinged to the pair of ear plates (312).

8. The turntable assembly according to claim 7, characterized in that, The bottom of the rotating seat (311) has a circumferential flange (311a), the diameter of which is larger than the diameter of the first fixing plate (51).

9. The turntable assembly according to claim 2, characterized in that, The first fixing plate (51) is fixedly connected to the top plate (11).

10. The turntable assembly according to claim 1, characterized in that, The rotating body (31) includes a rotating seat (311), the rotating seat (311) having a bottom that contacts and engages with the plane of the first fixed plate (51), and the bottom of the rotating seat (311) having a circumferential flange (311a); wherein, the clamping mechanism includes: A cylinder mounting bracket (73) is provided on the top plate (11) of the turntable body (10); and Multiple clamping cylinders (72), mounted on the cylinder mounting bracket (73), are configured to press the circumferential flange (311a) downward by the movement of the piston rod.

11. The turntable assembly according to claim 1 or 10, characterized in that, The plurality of clamping cylinders (72) are arranged at equal angular intervals along the circumference of the turntable body (10).

12. The turntable assembly according to claim 1, characterized in that, Also includes: A locking mechanism, provided on the turntable body (10), is configured to lock at least one rotational position of the rotating body (31).

13. The turntable assembly according to claim 12, characterized in that, The locking mechanism includes a hydraulic cylinder locking mechanism (81) and / or a mechanical locking mechanism (82).

14. The turntable assembly according to claim 13, characterized in that, The hydraulic cylinder locking mechanism (81) includes a locking cylinder (811) disposed on the side of the top plate (11) of the turntable body (10) away from the rotating body (31), the rotating body (31) having at least one locking hole, and the locking cylinder (811) being configured to achieve insertion and fixation of the at least one locking hole by piston rod movement.

15. The turntable assembly according to claim 13, characterized in that, The mechanical locking mechanism (82) includes a locking plate (821), a spring (823), a fixed pin (822), and a flexible shaft pull wire (824). The locking plate (821) is hinged to 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) to reset the locking plate (821) to the position abutting the rotating body (31) so as to lock the position of the rotating body (31). The flexible shaft pull wire (824) is connected to the locking plate (821) and is used to pull the locking plate (821) around the fixed pin (822) when it is subjected to tension so as to make the locking plate (821) leave the position abutting the rotating body (31) so as to release the position lock of the rotating body (31).

16. The turntable assembly according to claim 1, characterized in that, The distance from the rotation axis (21) of the first rotary mechanism (20) to the center of the turntable body (10) is less than the distance from the rotation axis (35) of the second rotary mechanism (30) to the center of the turntable body (10).

17. An engineering machinery equipment, characterized in that, include: The turntable assembly according to any one of claims 1-16.

18. The engineering machinery equipment according to claim 17, characterized in that, The engineering machinery and equipment mentioned are excavators, cranes, or excavator loaders.

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