Rotary table structure

Abstract

A rotary table structure comprises a rotary table body and a winch box connected to the rotary table body, the winch box comprises a first side plate, a second side plate and a third side plate, and the first side plate and the second side plate are arranged on the two opposite sides of the third side plate respectively. Connecting pieces are arranged at the joint of the first side plate and the third side plate and the joint of the second side plate and the third side plate correspondingly and used for being fixedly connected with the two sides of the balance weight correspondingly, so that the balance weight is arranged on the outer side of the third side plate. The lower part and the rear part of the rear-section winch box of the turntable structure can carry counter weights for transition, and compared with the prior art, the turntable structure can carry more counter weights so as to ensure that the crane achieves the effect of carrying full counter weights for transition as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of turntable structures of engineering machinery, in particular to a turntable structure. Background Art

[0002] Truck crane is a common large-scale construction machinery. It has the advantages of good mobility and rapid transfer, and is widely used in construction. The counterweight device is an important component of the construction crane. When performing lifting operations under different working conditions, the counterweight plays a vital role in the stability of the vehicle.

[0003] At present, lifting machinery such as truck cranes and crawler cranes usually use the method of adding counterweights on the turntable to balance the weight of the lifting weight to ensure its lifting capacity. In order to reduce customer operating costs, truck cranes are designed to carry as much counterweight as possible during transfer.

[0004] However, in the prior art, Figure 1 As shown, a fixed counterweight 103 is usually carried by bolts 102 below the hoisting box 101 at the rear section of the turntable. For a vehicle model with more counterweight 103, it is impossible to transfer with all the counterweight 103. Utility Model Content

[0005] In view of this, the utility model provides a turntable structure, and the counterweight can be carried for transfer below and behind the rear winch box of the turntable structure. Compared with the prior art, more counterweight can be carried to ensure that the crane can carry the full counterweight for transfer as much as possible.

[0006] The utility model provides a turntable structure, including a turntable body and a winch box connected to the turntable body, the winch box including a first side plate, a second side plate and a third side plate, the first side plate and the second side plate are respectively arranged on two opposite sides of the third side plate, wherein connecting pieces are respectively provided at the connection between the first side plate and the third side plate and at the connection between the second side plate and the third side plate, the connecting pieces are used to respectively fix and connect two sides of a counterweight so that the counterweight is arranged on the outer side of the third side plate.

[0007] In one embodiment, the connecting members are fixedly connected to the outer sides of the first side plate and the second side plate respectively, and the connecting members are used to be fixedly connected to the connecting parts on both sides of the counterweight respectively.

[0008] In one embodiment, the connecting member is a bending plate, a first mounting hole is provided on the bending plate, and second mounting holes are respectively provided on the first side plate and the second side plate at positions corresponding to the first mounting hole. The first mounting hole and the second mounting hole are used to fix the connecting fasteners, and the fasteners are used to fix the connecting part of the counterweight to the bending plate.

[0009] In one embodiment, the fastener is a pin, one end of the pin is provided with a positioning portion, the connector is fixedly connected to a positioning member, and the positioning member is used to abut against the positioning portion when the pin is fixedly connected to the first mounting hole and the second mounting hole.

[0010] In one embodiment, the positioning portion is a circular boss with a cutout, the outer diameter of the circular boss is larger than the outer diameter of the pin shaft, and the positioning member is a plate-like structure, the bottom of the plate-like structure is used to abut against the cutout.

[0011] In one embodiment, an annular plate-shaped member is fixedly connected to a position on the bending plate corresponding to the first mounting hole.

[0012] In one embodiment, a through slot is provided on the third side plate, and the connecting portion for the counterweight passes through the third side plate and is fixedly connected to the connecting member.

[0013] In one embodiment, the connecting members are fixedly connected to opposite sides of the third side plate and are respectively close to the first side plate and the second side plate, and the connecting members are used to be fixedly connected to the connecting parts on both sides of the counterweight.

[0014] In one embodiment, the connecting member is a plate-shaped hanging ear, and a third mounting hole is provided on the plate-shaped hanging ear. The third mounting hole is used to fix a fastener, and the fastener is used to fix the connecting portion of the counterweight to the plate-shaped hanging ear.

[0015] In one embodiment, an annular plate-shaped member is fixedly connected to a position on the plate-shaped hanging ear corresponding to the third mounting hole.

[0016] The turntable structure provided by the utility model adds connecting pieces on both sides of the hoisting box to connect with the two sides of the counterweight arranged at the rear of the hoisting box. Therefore, the counterweight can be carried for transfer under and behind the hoisting box at the rear section of the turntable structure. Compared with the prior art, more counterweight can be carried to ensure that the crane can achieve the effect of carrying the full counterweight for transfer as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The figure schematically shows the assembly structure of the counterweight in the turntable structure in the prior art.

[0019] Figure 2 The partial structure of the turntable structure of the embodiment of the utility model is schematically shown.

[0020] Figure 3 The partial main view structure of the turntable structure with counterweight according to the embodiment of the utility model is schematically shown.

[0021] Figure 4 The partial main view structure of the turntable structure of the embodiment of the utility model is schematically shown.

[0022] Figure 5 The side view structure of the turntable structure of the embodiment of the utility model is schematically shown.

[0023] Figure 6 The assembly structure of the mounting pin and the clamping plate of the embodiment of the utility model is schematically shown.

[0024] Figure 7 The side view structure of the mounting pin according to the embodiment of the utility model is schematically shown.

[0025] Figure 8 The main view structure of the mounting pin of the embodiment of the utility model is schematically shown.

[0026] Fig. 9 The partial main view structure of the turntable structure of the embodiment of the utility model is schematically shown. DETAILED DESCRIPTION

[0027] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "disposed", "set on", "provided with", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The terms "upper", "both sides", "outside", "rear", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0030] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0031] The term "comprise", "comprising", or any other variation thereof, is intended to cover a non-exclusive inclusion of elements other than those listed and may also include other elements not expressly listed.

[0032] First embodiment

[0033] like Figures 2 to 4 As shown, the turntable structure of the first embodiment of the utility model includes a turntable body and a winch box 10 connected to the turntable body, the winch box 10 includes a first side panel 11, a second side panel 12 and a third side panel 13, the first side panel 11 and the second side panel 12 are respectively arranged on the opposite sides of the third side panel 13, wherein the connection between the first side panel 11 and the third side panel 13 and the connection between the second side panel 12 and the third side panel 13 are respectively provided with connecting members 14, the connecting members 14 are used to respectively fix and connect the two sides of the counterweight 103 so that the counterweight 103 is arranged on the outer side of the third side panel 13.

[0034] According to the turntable structure provided by the utility model, by adding connecting pieces 14 on both sides of the hoisting box 10 and connecting with the two sides of the counterweight 103 arranged on the outside of the third side plate 13, that is, behind the hoisting box 10, the counterweight 103 can be carried for transfer below and behind the hoisting box 10 at the rear section of the turntable structure. Compared with the prior art, more counterweight 103 can be carried to ensure that the crane can carry the full counterweight for transfer as much as possible.

[0035] like Figures 2 to 4 As shown, specifically, in this embodiment, the connecting member 14 is fixedly connected to the outer sides of the first side plate 11 and the second side plate 12 respectively, and the connecting member 14 is used to be fixedly connected to the connecting parts 1031 on both sides of the counterweight 103 respectively, and the connecting parts 1031 can be ear plates or hanging ears.

[0036] like Figures 2 to 4As shown, specifically, in this embodiment, the connecting member 14 is a bent plate, a first mounting hole 141 is provided on the bent plate, and second mounting holes are provided at positions corresponding to the first mounting hole 141 on the first side plate 11 and the second side plate 12, respectively. The first mounting hole 141 and the second mounting hole are used to fix the fastener 15, and the fastener 15 is used to fix the connection portion 1031 of the counterweight 103 to the bent plate. Specifically, a bent plate is welded between the first side plate 11 and the third side plate 13 and between the second side plate 12 and the third side plate 13. The advantage of this structure is that when the counterweight 103 is installed at the rear of the winch box 10, a small box structure is formed locally at the fastener 15 such as the pin shaft, and the entire large box structure at the rear section of the turntable is subjected to bending moment, and there will be no local force, instability or cracking caused by poor rigidity. Compared with the structural design of separately welding a hanging ear to carry the counterweight 103 at the rear section of the turntable, it has better reliability.

[0037] like Figures 6 to 8 As shown, specifically, in this embodiment, the fastener 15 is a pin, one end of the pin is provided with a positioning portion 151, and a positioning member 16 is fixedly connected to the connecting member 14, and the positioning member 16 is used to abut on the positioning portion 151 when the pin is fixedly connected to the first mounting hole 141 and the second mounting hole. By arranging the positioning portion 151 on the pin and the positioning member 16 on the connecting member 14 to abut each other, the positioning member 16 can limit the freedom of rotation and displacement of the pin on both sides after the pin is assembled. Specifically, in this embodiment, the positioning portion 151 is a circular boss with a cutout, and the outer diameter of the circular boss is larger than the outer diameter of the pin, and the positioning member 16 is a square plate-like structure, and the bottom of the square plate-like structure is used to abut on the cutout of the circular boss. Specifically, the positioning member 16 is fixed to the first side plate 11 and the second side plate 12 by bolts 102.

[0038] like Figures 5 to 8 As shown, specifically, in this embodiment, the third side plate 13 is symmetrically provided with through grooves 131, and the connecting portion 1031 of the counterweight 103 passes through the third side plate 13 and is fixedly connected to the connecting member 14 through the through grooves 131. Specifically, in this embodiment, an annular plate-like member 17 is fixedly connected to the position on the bending plate corresponding to the first mounting hole 141. Specifically, the counterweight is inserted through the through groove 131 at the rear of the rear section of the turntable and is connected by a pin. The first mounting holes 141 on both sides are welded with annular plate-like members 17, and the thickness of the annular plate-like members 17 is a post-processing size. The stress of the structure at the pin installation location can be reduced by adding the annular plate-like member 17, and the positioning accuracy of the connecting portion 1031 of the counterweight 103 can be adjusted by post-processing the thickness size of the annular plate-like member 17, thereby facilitating the fastening connection of the counterweight 103.

[0039] Second embodiment

[0040] like Fig. 9As shown, the turntable structure of the second embodiment of the utility model is different from that of the first embodiment in that the connecting members 14 are respectively fixedly connected to the opposite sides of the third side plate 13 and are respectively close to the first side plate 11 and the second side plate 12, and the connecting members 14 are used to be fixedly connected to the connecting parts 1031 on both sides of the counterweight.

[0041] like Fig. 9 As shown, specifically, in this embodiment, the connecting member 14 is a plate-shaped hanging ear, and the plate-shaped hanging ear is provided with a third mounting hole 142, and the third mounting hole 142 is used to fix the fastener 15, and the fastener 15 is used to fix the connecting portion 1031 of the counterweight 103 to the plate-shaped hanging ear. Specifically, the fastener 15 can be a bolt, a screw, a pin, etc.

[0042] like Fig. 9 As shown, specifically, in this embodiment, an annular plate-like member 17 is fixedly connected to a position on the plate-like hanging ear corresponding to the third mounting hole 142 .

[0043] According to the above embodiments, it can be seen that the turntable structure involved in the utility model is connected with the two sides of the counterweight arranged at the rear of the winch box by adding connecting parts on both sides of the winch box. Therefore, the counterweight can be carried for transfer under and behind the winch box at the rear section of the turntable structure. Compared with the prior art, more counterweight can be carried to ensure that the crane can carry the full counterweight for transfer as much as possible.

[0044] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A turntable structure, characterized in that: The invention comprises a turntable body and a hoisting box connected to the turntable body, wherein the hoisting box comprises a first side plate (11), a second side plate (12) and a third side plate (13), wherein the first side plate (11) and the second side plate (12) are respectively arranged on opposite sides of the third side plate (13); wherein: A connecting piece (14) is provided at a connection point between the first side plate (11) and the third side plate (13) and at a connection point between the second side plate (12) and the third side plate (13), respectively, and the connecting piece (14) is used to respectively fix and connect two sides of the counterweight (103) so that the counterweight (103) is arranged on the outer side of the third side plate (13).

2. The turntable structure according to claim 1, characterized in that: The connecting member (14) is respectively fixedly connected to the outer sides of the first side plate (11) and the second side plate (12), and the connecting member (14) is used to be respectively fixedly connected to the connecting parts (1031) on both sides of the counterweight (103).

3. The turntable structure according to claim 2, characterized in that: The connecting member (14) is a bent plate, a first mounting hole (141) is provided on the bent plate, second mounting holes are provided at positions corresponding to the first mounting hole (141) on the first side plate (11) and the second side plate (12), the first mounting hole (141) and the second mounting hole are used for fixing a fastener (15), and the fastener (15) is used for fixing a connecting portion (1031) of the counterweight (103) to the bent plate.

4. The turntable structure according to claim 3, characterized in that: The fastener (15) is a pin shaft, one end of which is provided with a positioning portion (151), and the connecting member (14) is fixedly connected with a positioning member (16), and the positioning member (16) is used to abut against the positioning portion (151) when the pin shaft is fixedly connected to the first mounting hole (141) and the second mounting hole.

5. The turntable structure according to claim 4, characterized in that: The positioning portion (151) is a circular boss with a cutout, the outer diameter of the circular boss is larger than the outer diameter of the pin shaft, and the positioning member (16) is a plate-like structure, the bottom of the plate-like structure is used to abut against the cutout of the circular boss.

6. The turntable structure according to any one of claims 3 to 5, characterized in that: An annular plate-shaped member (17) is fixedly connected to a position on the bending plate corresponding to the first mounting hole (141).

7. The turntable structure according to any one of claims 2 to 5, characterized in that: The third side plate (13) is provided with a through slot (131), and the through slot (131) is used for the connecting portion (1031) of the counterweight (103) to pass through the third side plate (13) and be fixedly connected to the connecting member (14).

8. The turntable structure according to claim 1, characterized in that: The connecting member (14) is respectively fixedly connected to two opposite sides of the third side plate (13) and is respectively close to the first side plate (11) and the second side plate (12), and the connecting member (14) is used to be respectively fixedly connected to the connecting parts (1031) on both sides of the counterweight (103).

9. The turntable structure according to claim 8, characterized in that: The connecting piece (14) is a plate-shaped hanging ear, and a third mounting hole (142) is provided on the plate-shaped hanging ear. The third mounting hole (142) is used to fix a fastener (15) to be connected. The fastener (15) is used to fix the connecting portion (1031) of the counterweight (103) to the plate-shaped hanging ear.

10. The turntable structure according to claim 9, characterized in that: An annular plate-shaped component (17) is fixedly connected to a position on the plate-shaped hanging ear corresponding to the third mounting hole (142).

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