A turret mechanism and work machine

Abstract

The present disclosure relates to a slewing mechanism and a working machine, the slewing mechanism being used for connecting with the working machine, comprising: a slewing platform (1) which is rotatably arranged on a chassis (21) of the working machine; and an adapter device (3) which is detachably connected with the slewing platform (1); wherein the adapter device (3) has one or more first connection positions (31) which are used for detachably connecting with a luffing device (22) of the working machine, the first connection positions (31) are arranged on an upper end surface of the adapter device (3), and the first connection positions (31) are higher than an upper end surface of the slewing platform (1) in a vertical direction.

Description

Technical Field

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

[0002] To meet the lifting demands for ultra-large equipment in major domestic engineering projects such as petroleum, petrochemical, nuclear power, wind power, and steel, cranes are evolving towards ultra-large sizes with higher lifting heights, wider working radius, and stronger lifting capacity. Large crawler cranes offer multiple boom configurations to achieve various lifting heights and ranges, meeting the needs of diverse construction scenarios. As boom length and weight increase, the boom raising process becomes more dangerous. Since boom raising is an essential step for a crawler crane to enter its working state, it is also a significant factor limiting boom length. Summary of the Invention

[0003] The inventors discovered through research that the greater the luffing force of the crane boom in the related technology, the greater the axial component of the boom, which makes the boom structure less stable. At the same time, the greater the luffing force, the larger the requirements for the tie plate, wire rope and mechanism in the luffing system, which increases the cost and weight of the whole vehicle.

[0004] In view of this, the present disclosure provides a turntable mechanism and a working machine that can improve the luffing force of the working machine.

[0005] In one aspect of this disclosure, a turntable mechanism is provided for connection with working machinery, comprising:

[0006] A rotary table, rotatably mounted on the chassis of the working machinery; and

[0007] A transfer device that is detachably connected to the rotary table;

[0008] The adapter has one or more first connection positions for detachable connection with the luffing device of the working machinery. The first connection positions are located on the upper surface of the adapter and are higher than the upper surface of the rotary table in the vertical direction.

[0009] In some embodiments, the upper surface of the rotary table has one or more second connection positions, and the adapter is detachably connected to the luffing device through the first connection position and / or the second connection position.

[0010] In some embodiments, the turntable mechanism further includes: a first counterweight;

[0011] The adapter also has a third connection position, located on the side of the adapter away from the rotary table, for detachable connection with the first counterweight.

[0012] In some embodiments, the turntable mechanism further includes: a second counterweight;

[0013] The second counterweight is detachably connected to the rotary table.

[0014] In some embodiments, a ring-shaped connecting lug is provided at the third connection position, and a first counterweight is suspended at the connecting lug.

[0015] In some embodiments, the turntable mechanism further includes: a lifting and pushing device;

[0016] The adapter is detachably connected to the super-lift pushing device via a third connection position.

[0017] In some embodiments, the adapter has a fourth connection position for connection to the tail end of the rotary table.

[0018] In some embodiments, the adapter includes a truss structure or a box structure.

[0019] In some embodiments, a plurality of first connection positions are spaced apart along the length of the rotary table.

[0020] In another aspect of this disclosure, a working machine is provided, comprising: any of the aforementioned turntable mechanisms.

[0021] In some embodiments, the luffing device of the operating machinery includes: a mast, a luffing boom, a first connector, and a second connector;

[0022] The upper surface of the turntable has one or more second connection positions, one end of the mast is rotatably connected to the turntable mechanism, and the other end of the mast is connected to the first connection position and / or the second connection position via a first connector;

[0023] One end of the luffing boom is rotatably connected to the turntable mechanism, and the second connector is connected between the other end of the luffing boom and the second end of the mast.

[0024] In some embodiments, the turntable mechanism includes a super-lift and push device, which includes: a first super-lift boom, a second super-lift boom, a first connector, and a second connector;

[0025] The first end of the first super-lift boom is connected to the slewing table, the second end of the first super-lift boom is connected to the first end of the luffing boom through the first connector, the second end of the first super-lift boom is connected to the second end of the mast through the second connector, and the second end of the first super-lift boom is connected to the second end of the second super-lift boom through the second connector.

[0026] The adapter also has a third connection position, which is located on the side of the adapter away from the turntable. The turntable mechanism also includes a first counterweight, the second end of the second super boom is connected to the first counterweight, and the first end of the second super boom is connected to the third connection position.

[0027] In some embodiments, the first connector includes a pulley block and a wire rope, and the second connector includes a pull plate.

[0028] In some embodiments, the operating machinery includes a crane.

[0029] Therefore, according to the embodiments of this disclosure, by setting the height of the first connection position on the adapter to be higher than the upper surface of the turntable, the lever arm of the luffing force when the luffing device is connected to the adapter is larger. When the luffing torque required for the boom is constant, the luffing force can be reduced. This allows for smaller selections of the luffing wire rope and luffing winch in the vehicle's luffing system, and reduces the strength and weight required for structural components such as the luffing pulley block and mast, significantly reducing the overall vehicle cost and weight. Furthermore, under the same luffing force conditions, the boom length or weight can be increased, thereby improving the overall lifting height of the vehicle and achieving a larger working radius and stronger lifting capacity. Attached Figure Description

[0030] 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.

[0031] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0032] Figure 1 It is based on the structural diagram of a crawler crane in related technologies;

[0033] Figure 2 These are schematic diagrams of the structure of a working machine according to some embodiments of this disclosure;

[0034] Figure 3 (a) is a schematic diagram of the connection between the luffing mechanism and the adapter of a working machine according to some embodiments of the present disclosure;

[0035] Figure 3 (b) is a schematic diagram of the connection between the luffing mechanism and the turntable of a working machine according to some embodiments of the present disclosure;

[0036] Figure 3 (c) is a schematic diagram of the connection between the luffing mechanism, the transfer device and the turntable of the working machinery according to some embodiments of the present disclosure;

[0037] Figure 4 This is a schematic diagram of the structure of a switching device according to some embodiments of the present disclosure;

[0038] Figure 5 (a) is a force analysis diagram of the variable amplitude force of the working machinery according to some embodiments of the present disclosure;

[0039] Figure 5(b) is a force analysis diagram of the overturning force of the operating machinery according to some embodiments of the present disclosure;

[0040] Figure 6 This is a schematic diagram of the connection between the working machinery and the super-lifting and pushing device according to some embodiments of the present disclosure.

[0041] 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

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Figure 1 According to the structural diagram of the crawler crane in the relevant technology, the mast 221a is connected to the turntable 1a through the first connecting member 223a, and the luffing boom 221a is connected to the mast 221a through the second connecting member 224a. Figure 5 (a) is a force analysis diagram of the variable amplitude force of the operating machinery according to some embodiments of the present disclosure. Figure 5 (b) is a force analysis diagram of the overturning force of a working machine according to some embodiments of the present disclosure. Reference Figure 1 and Figure 5 In (a) and (b), the pulling force of the tracked crane in the related technology is shown in the figure as F. b As shown, the distance from the hinge point between the luffing boom 222a and the slewing table 1a to the pull plate, i.e., the lever arm of the pull plate force, is L. b The torque M generated by the pull plate b =F b *L b The weight of the luffing boom 222a is G, and the distance from its center of gravity to the hinge point between the slewing table 1a and the luffing boom 222a is L. g The torque M generated by the gravity of the luffing boom 222a g =G*L g If the torque generated by the tension plate itself is ignored, M is required. b >M g That is, the moment of pulling the plate must be greater than the moment generated by the weight of the luffing boom 222a in order to meet the boom raising conditions.

[0048] The torque of the pull plate is provided by the torque of the luffing system. Therefore, if a larger pull plate torque is required, the luffing torque of the entire vehicle system will also increase. The luffing force from the mast to the luffing pulley assembly is F1, and the lever arm from the connection hinge point between the mast and the slewing table 1a to the luffing wire rope is L1. The luffing torque M1 = F1 * L1. Therefore, when a large crawler crane has an extra-long boom, the luffing force during boom raising is greater, the axial component of the boom is larger, and the stability of the boom structure is worse. At the same time, a larger luffing force requires larger selections of the pull plate, wire rope, and mechanism in the luffing system, increasing the overall cost and weight of the vehicle.

[0049] Therefore, improving the magnitude of the luffing force of the luffing system during the boom lifting process of crawler cranes, as well as reducing the overall cost and weight of the vehicle, is an inevitable development trend for large crawler cranes and also a requirement for the development of lifting height, radius, and load capacity of crawler cranes.

[0050] In view of this, refer to Figures 2-5(a), in one aspect of the embodiments of the present disclosure, a turntable mechanism is provided for connecting with a working machine, including: a turntable 1 and an adapter device 3. The turntable 1 is rotatably arranged on the chassis 21 of the working machine, and the adapter device 3 is detachably connected to the turntable 1. The adapter device 3 has one or more first connection positions 31 for detachably connecting with the luffing device 22 of the working machine. The first connection positions 31 are arranged on the upper end surface of the adapter device 3, and the first connection positions 31 are higher than the upper end surface of the turntable 1 in the vertical direction.

[0051] Reference Figure 5 (a), when the luffing device 22 is connected to the turntable 1, the luffing force between the mast 221 and the luffing pulley block is F1, the luffing force between the mast 221 and the luffing pulley block is F1, the distance from the hinge point between the mast 221 and the turntable 1 to the luffing force F1 is L1, and at this time the luffing torque M1 = F1 * L1. When the luffing device 22 is connected to the first connection position 31 of the adapter device 3, the luffing force between the mast 221 and the luffing pulley block is F2, the distance from the hinge point between the mast 221 and the turntable 1 to the luffing force F2 is L2, and at this time the luffing torque M2 = F2 * L2.

[0052] In this embodiment, by setting the height of the first connection position 31 on the adapter device 3 to be higher than the upper end surface of the turntable 1, the distance L2 from the hinge point to the luffing force F2 when the luffing device 22 is connected to the adapter device 3 is greater than L1. When the required luffing torque for raising the boom is constant, then F2 < F1. Therefore, when the luffing device 22 is connected to the adapter device 3, the luffing force can be made smaller, so that the luffing wire rope and luffing winch of the vehicle's luffing system can be matched with smaller selections, and the strength requirements for structural components such as the luffing pulley block and mast are lower and the weight is lighter, which can significantly reduce the cost and weight of the whole vehicle. In addition, under the same luffing force conditions, the boom length of raising the boom can be made longer or the boom weight can be made heavier, thereby increasing the lifting height of the whole vehicle and achieving a greater working range and stronger lifting capacity.

[0053] Reference Figure 2 、 Figure 3 (a), (b) and (c), in some embodiments, the upper end surface of the turntable 1 has one or more second connection positions 32, and the adapter device 3 is detachably connected to the luffing device 22 through the first connection position 31 and / or the second connection position 32. In this embodiment, the turntable mechanism can flexibly select to connect with the first connection position 31 and / or the second connection position 32 according to the actual working situation, and has strong adaptability to different working conditions, thereby further optimizing the luffing force of the working machine and enabling the turntable mechanism to have a greater working range and lifting capacity.

[0054] Reference Figure 2 、 Figure 3 and Figure 5(b) In some embodiments, the turntable mechanism further includes: a first counterweight 41, and the adapter 3 also has a third connection position 33, which is located on the side of the adapter 3 away from the turntable 1, for detachable connection with the first counterweight 41.

[0055] As the boom length of a crane increases, the required anti-tipping moment also increases, which in turn increases the number and weight of counterweights needed, thus increasing the overall cost and weight of the vehicle. Tracked cranes, on the other hand, require less counterweight during operation, which leads to repeated disassembly and assembly of counterweights during use of ultra-long boom cranes, resulting in low efficiency.

[0056] refer to Figure 5 (b) The weight of the luffing boom 222 is G, and the distance from the center of gravity of the luffing boom 222 to the hinge point of the slewing table 1 is L. g The overturning moment M generated by the boom f =G*L g The weight of the first counterweight 41 is G. p1 The distance from the first counterweight 41 to the hinge point between the rotary table 1 and the chassis 21 is L. p1 The anti-overturning moment M generated by the first counterweight 41 p1 =G p1 *L p1 The turntable mechanism may also include a built-in second counterweight 42, the weight of which is G. p2 The distance from the second counterweight 42 to the hinge point between the rotary table 1 and the chassis 21 is L. p2 The overturning moment M generated by the second counterweight 42 p2 =G p2 *L p2 .

[0057] In this embodiment, a third connection position 33 is provided on the side of the adapter 3 away from the rotary table 1, which is detachably connected to the first counterweight 41. This makes the distance L from the first counterweight 41 to the hinge point between the rotary table 1 and the chassis 21... p1 The distance L from the second counterweight 42 to the hinge point between the turntable 1 and the chassis 21 is greater than the distance between the second counterweight 42 and the chassis 21. p2 This allows the first counterweight 41 to generate a greater anti-overturning moment, improving the stability of the working machinery. It also allows for an increase in boom length or weight, thereby increasing the overall lifting height of the vehicle and enabling the working machinery to operate with a wider radius and greater lifting capacity. Furthermore, under the same boom length and weight, the weight of the counterweight can be reduced, improving the efficiency of disassembly and assembly of the counterweight and lowering the overall vehicle cost.

[0058] refer to Figure 2 , Figure 3 and Figure 5(b) In some embodiments, it further includes: a second counterweight 42, wherein the turntable 1 is detachably connected to the first counterweight 41 and / or the second counterweight 42. In this embodiment, the turntable mechanism can flexibly choose to connect with the first counterweight 41 and / or the second counterweight 42 according to the actual working conditions. When the turntable mechanism is simultaneously connected to the first counterweight 41 and the second counterweight 42, the anti-overturning moment is M. p1 +M p2 This results in greater stability for the vehicle, allowing for the use of longer or heavier booms, increasing the working radius and lifting capacity.

[0059] refer to Figure 4 In some embodiments, the third connection position 33 has an annular connecting lug, and the first counterweight 41 is suspended at the connecting lug. In this embodiment, the first counterweight 41 is hung or suspended inside the annular connecting lug of the third connection position 33, which can improve the efficiency of disassembling and assembling the counterweight.

[0060] refer to Figure 6 In some embodiments, the device further includes a super-lift pushing device, wherein the adapter 3 is detachably connected to the super-lift pushing device via a third connection position 33. In this embodiment, under super-lift conditions, the super-lift pushing device can be connected to the third connection position 33 or to the rotary table 1. When the super-lift pushing device is connected to the rotary table 1, the super-lift pushing amplitude is L. C1 The overshoot displacement when connected to the third connection position 33 is L. C2 Because of L C2 >L C1 Therefore, when the overlift and pushing device is connected to the transfer device 3, the overturning moment and stability of the whole vehicle can be improved.

[0061] refer to Figure 4 In some embodiments, the adapter 3 has a fourth connection position 34 for connecting to the tail end of the rotary table 1, and the connection method includes, but is not limited to, a pin hinge. In this embodiment, the adapter 3 is connected to the rotary table 1 through the fourth connection position 34, which facilitates assembly and disassembly.

[0062] refer to Figure 4 In some embodiments, the adapter 3 includes a truss structure or a box-type structure. In this embodiment, the adapter 3 may consist of two parallel plates with sufficient space between them, and the lower surface of the plates is inclined to avoid interference and collision with the connected counterweight or lifting and pushing device.

[0063] In some embodiments, a plurality of first connection positions 31 are spaced apart along the length of the turntable 1. In this embodiment, a plurality of first connection positions 31 can be provided on the adapter 3 so that the luffing force can be adjusted by adjusting the connection position with the adapter 3 according to the actual working conditions, thereby optimizing the overall vehicle cost and weight.

[0064] refer to Figure 2 In another aspect of the embodiments of this disclosure, a working machine is provided, including any of the aforementioned turntable mechanisms. Under the condition that the boom length and weight of the boom 222 are the same, the working machine in this embodiment can effectively reduce the boom tension and the axial force of the boom, improving the anti-instability capability of the boom 222. This allows for a reduction in the selection parameters of the wire rope and boom winch of the entire vehicle's boom system, and a reduction in the strength and weight of structural components such as the mast 221 and the boom pulley block, resulting in a lighter overall vehicle weight and significantly reduced costs. Furthermore, under the same lifting height, working radius, and suspended weight, the anti-overturning moment of the entire vehicle can be increased, improving the overall stability of the machine and providing support for the slewing operation of the working machine.

[0065] refer to Figure 2 In some embodiments, the luffing device 22 of the working machinery includes: a mast 221, a luffing boom 222, a first connecting member 223, and a second connecting member 224. The upper end face of the turntable 1 has one or more second connection positions 32. One end of the mast 221 is rotatably connected to the turntable mechanism, and the other end of the mast 221 is connected to the first connection position 31 and / or the second connection position 32 via the first connecting member 223. One end of the luffing boom 222 is rotatably connected to the turntable mechanism, and the second connecting member 224 connects the other end of the luffing boom 222 to the second end of the mast 221.

[0066] In this embodiment, the luffing boom 222 includes, but is not limited to, a space truss high-strength steel pipe welded structure, and has a corresponding pull plate bracket for placing and fixing the pull plate, preventing the pull plate from colliding or rubbing against the structural components, and effectively avoiding damage to the pull plate and the corresponding structural components.

[0067] refer to Figure 6 In some embodiments, the turntable mechanism includes a super-lifting and pushing device, which includes: a first super-lifting boom 51, a second super-lifting boom 52, a first connecting member 223, and a second connecting member 224. The first super-lifting boom 51 consists of two boom sections, and the folding angle between the two boom sections is adjustable. The first end of the first super-lifting boom 51 is connected to the turntable 1. The second end of the first super-lifting boom 51 is connected to one end of the luffing boom 222 via the first connecting member 223. The second end of the first super-lifting boom 51 is connected to the second end of the mast 221 via the second connecting member 224. The second end of the first super-lifting boom 51 is connected to the second end of the second super-lifting boom 52 via the second connecting member 224.

[0068] The adapter 3 also has a third connection position 33, which is located on the side of the adapter 3 away from the turntable 1. The turntable mechanism also includes a first counterweight 41, the second end of the second super boom 52 is connected to the first counterweight 41, and the first end of the second super boom 52 is connected to the third connection position 33.

[0069] In this embodiment, under the superlift condition of the working machinery, the superlift pushing device can also be connected through the adapter 3 to achieve a larger superlift pushing range, increase the anti-overturning moment of the whole vehicle, and improve the stability of the whole vehicle. At the same time, the superlift pushing device can also be connected to the turntable 1 according to the performance needs of the whole vehicle, so as to solve the possibility of the whole vehicle overturning when the whole vehicle needs a smaller anti-overturning moment, and improve the stability of the whole vehicle.

[0070] In some embodiments, the first connector 223 includes a pulley block and a steel wire rope, and the second connector 224 includes a pull plate. In this embodiment, the first connector 223 can be implemented by a pulley block and a steel wire rope, allowing for flexible length adjustment, and the second connector 224 can be implemented by a pull plate, which includes, but is not limited to, a bendable connector.

[0071] In some embodiments, the operating machinery includes a crane. In this embodiment, the crane includes, but is not limited to, a tracked crane, with a turntable mechanism mounted on a tracked chassis.

[0072] 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.

[0073] 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 mechanism for connecting to working machinery, characterized in that, include: A rotary table (1) is rotatably mounted on the chassis (21) of the working machinery; as well as The adapter (3) is detachably connected to the rotary table (1); Overhead pushing device; and First counterweight (41); The adapter (3) has multiple first connection positions (31) for detachably connecting with the luffing device (22) of the working machinery. The first connection positions (31) are located on the upper surface of the adapter (3). The first connection positions (31) are higher than the upper surface of the rotary table (1) in the vertical direction. The multiple first connection positions (31) are spaced apart along the length direction of the rotary table (1). The adapter (3) also has a third connection position (33) located on the side of the adapter (3) away from the rotary table (1), and the adapter (3) is detachably connected to the super-lift pushing device or the first counterweight (41) through the third connection position (33).

2. The turntable mechanism as described in claim 1, characterized in that, The upper surface of the rotary table (1) has one or more second connection positions (32), the adapter (3) is detachably connected to the luffing device (22) through the first connection position (31), and / or the rotary table (1) is detachably connected to the luffing device (22) through the second connection position (32).

3. The turntable mechanism as described in claim 1, characterized in that, Also includes: Second counterweight (42); The second counterweight (42) is detachably connected to the rotary table (1).

4. The turntable mechanism as described in claim 1, characterized in that, The third connection position (33) has an annular connecting lug, and the first counterweight (41) is suspended at the connecting lug.

5. The turntable mechanism as described in claim 1, characterized in that, The adapter (3) has a fourth connection position (34) for connecting to the tail end of the rotary table (1).

6. The turntable mechanism as described in claim 1, characterized in that, The adapter (3) includes a truss structure or a box structure.

7. A type of operating machinery, characterized in that, include: The turntable mechanism as described in any one of claims 1 to 6.

8. The operating machinery as described in claim 7, characterized in that, The luffing device (22) of the working machinery includes: mast (221), luffing boom (222), first connector (223) and second connector (224); The upper surface of the turntable (1) has one or more second connection positions (32), one end of the mast (221) is rotatably connected to the turntable mechanism, and the other end of the mast (221) is connected to the first connection position (31) and / or the second connection position (32) through the first connector (223). One end of the luffing boom (222) is rotatably connected to the turntable mechanism, and the second connector (224) is connected between the other end of the luffing boom (222) and the other end of the mast (221).

9. The operating machinery as described in claim 8, characterized in that, The first connector (223) includes a pulley block and a wire rope, and the second connector (224) includes a pull plate.

10. The operating machinery as described in claim 7, characterized in that, The operating machinery includes cranes.

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