A type of underframe lifting device and excavator

Abstract

This utility model relates to the field of lifting equipment technology and discloses a base frame lifting equipment and an excavator, including: two symmetrically arranged hooks, with a first pin and a second pin rotatably connected between the two hooks; an anti-detachment structure, which includes a guide groove, a guide ring, and a guide protrusion; the guide ring is fixedly connected to the mounting base plate, and the guide protrusion is fixedly connected to the guide ring; the anti-detachment pin has a guide groove, and the guide protrusion is located in the guide groove; the anti-detachment pin can rotate spirally; the guide ring and the guide protrusion guide and limit the anti-detachment pin; the anti-detachment pin needs to rotate spirally to descend or rise; after the anti-detachment pin is inserted into the through hole of the support base, even if there is shaking during the lifting process, the anti-detachment pin is not easy to fall off. Compared with the method of directly inserting the anti-detachment pin, the anti-detachment pin in this solution has higher stability; compared with the method of using bolts and nuts for locking, this solution has the characteristic of quick disassembly, taking into account both the stability of the connection and the convenience of disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a base frame lifting equipment and an excavator. Background Technology

[0002] A support cylinder is installed on the excavator underframe, and a support connecting seat for connecting the slewing bearing is installed on the top of the support cylinder. When the underframe is moved, it is moved with the help of a lifting tool and hoisting equipment.

[0003] A search revealed that existing technologies disclose special lifting tools for excavator underframes (Announcement No.: CN219708870U), including: A positioning seat is used to be placed on the upper surface of the support connecting seat of the base frame, and a pin is provided on it for being inserted downward into the bolt hole on the support connecting seat; The hook is connected to the positioning seat via a pivot. It has a hook portion that hooks onto the support connecting seat radially outward from the support connecting seat. The hook shank is provided with a lifting hole for connecting to a lifting ring. The lifting hole is positioned higher than the pivot connection position.

[0004] The existing technology uses the plane of the hook to support the bottom of the support base, and a pin is inserted into the hole of the support base. However, the pin will slide up and down, and it is easy to fall off during the hoisting process, affecting the stability of the hook and posing a certain risk. However, using bolts and nuts to lock the pins completely will affect the convenience of disassembly and assembly. Therefore, there is room for optimization in the installation method of the pin.

[0005] Therefore, we propose a base frame lifting device and an excavator. Utility Model Content

[0006] This utility model mainly solves the technical problem of the risk of detachment due to the upward and downward sliding of the aforementioned pin shaft, and provides a base frame lifting device and an excavator.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a base frame lifting device, comprising: Two symmetrically arranged hooks are rotatably connected by a first pin and a second pin. The second pin is rotatably connected to a mounting plate, and the mounting plate is movably provided with an anti-detachment pin. An anti-detachment structure is provided between the mounting base plate and the anti-detachment pin to limit the anti-detachment pin. The anti-detachment structure includes a guide groove, a guide ring, and a guide protrusion. The guide ring is fixedly connected to the mounting base plate and the guide protrusion is fixedly connected to the guide ring. The anti-detachment pin has a guide groove, and the guide protrusion is located in the guide groove. The anti-detachment pin can rotate spirally.

[0008] In a preferred embodiment of this utility model, the mounting base plate is a U-shaped rod, and the top of the anti-detachment pin is provided with a groove for installing a guide ring, which is welded into the groove.

[0009] In a preferred embodiment of this utility model, the anti-detachment pin is a cylinder, the guide ring is a ring, and the anti-detachment pin and the guide ring are fitted with a clearance.

[0010] In a preferred embodiment of this utility model, the guide groove is a spiral groove, the guide protrusion is a sphere, and two guide protrusions are provided on the inner circumferential surface of the guide ring, with the guide protrusions and the guide groove having a clearance fit.

[0011] In a preferred embodiment of this utility model, the anti-slip structure further includes a cap body, a pinch handle, and a rotating ring. The pinch handle is fixedly connected to the cap body, the rotating ring is fixedly connected to the cap body, and the cap body is rotatably connected to the guide groove through the rotating ring.

[0012] In a preferred embodiment of this utility model, the rotating ring is a circular ring, which is fixedly installed at the lower end of the cap body and rotatably positioned at the upper end of the anti-detachment pin. The pinch handle is fixedly installed at the upper end of the cap body.

[0013] An excavator includes a base frame, on which a support cylinder is welded, and on which a support seat is welded, the support seat having a through hole, and on which all the aforementioned base frame lifting devices are connected, the hook being placed on the support seat, and the anti-disengagement pin being inserted into the through hole.

[0014] This utility model provides a base frame lifting device and an excavator. It has the following beneficial effects: 1. This type of underframe lifting device and excavator uses guide rings and guide protrusions to guide and limit the anti-detachment pin. The anti-detachment pin needs to be rotated in a spiral to descend or rise. After the anti-detachment pin is inserted into the through hole of the support seat, even if there is shaking during the lifting process, the anti-detachment pin is not easy to fall off. Compared with the method of directly inserting the anti-detachment pin, the anti-detachment pin in this solution has higher stability. Compared with the method of using bolts and nuts for locking, this solution has the characteristic of quick disassembly, taking into account both the stability of the connection and the convenience of disassembly and assembly.

[0015] 2. This type of underframe lifting device and excavator, by setting a rotating ring, pulls up the handle, the handle drives the cap body and the rotating ring, the rotating ring pulls the anti-disengagement pin to move upward, and the anti-disengagement pin can rotate through the cooperation of the guide protrusion and the guide groove during the upward movement. Similarly, when the handle is pressed down, the mounting plate can rotate in the opposite direction, which makes it convenient for hand to hold and operate, simplifies the use method, and makes it more convenient. Attached Figure Description

[0016] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a three-dimensional view of the anti-detachment structure of this utility model; Figure 4 This is an exploded view of the anti-detachment structure of this utility model; Figure 5 This is a schematic diagram of the hook lifting base frame of this utility model.

[0017] Legend: 10. Hook body; 11. First pin; 12. Second pin; 13. Mounting plate; 14. Anti-detachment pin; 20. Guide groove; 21. Guide ring; 22. Guide protrusion; 30. Cap body; 31. Handle; 32. Rotating ring. Detailed Implementation

[0018] A type of underframe lifting device and excavator, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes: Two symmetrically arranged hooks 10 are rotatably connected by a first pin 11 and a second pin 12. The second pin 12 is rotatably connected to a mounting plate 13. The mounting plate 13 is movably provided with an anti-detachment pin 14. An anti-detachment structure is provided between the mounting plate 13 and the anti-detachment pin 14 to limit the anti-detachment pin 14. The anti-detachment structure includes a guide groove 20, a guide ring 21, and a guide protrusion 22. The guide ring 21 is fixedly connected to the mounting plate 13 and the guide protrusion 22. The anti-detachment pin 14 is provided with... The guide groove 20 and guide protrusion 22 are located inside the guide groove 20. The anti-detachment pin 14 can rotate spirally. The mounting base plate 13 is a U-shaped rod. The top of the anti-detachment pin 14 has a slot for installing the guide ring 21. The guide ring 21 is welded into the slot. The anti-detachment pin 14 is a cylinder and the guide ring 21 is a ring. The anti-detachment pin 14 and the guide ring 21 are in clearance fit. The guide groove 20 is a spiral groove and the guide protrusion 22 is a sphere. Two guide protrusions 22 are provided on the inner circumferential surface of the guide ring 21. The guide protrusions 22 are in clearance fit with the guide groove 20. In this design, the guide ring 21 and guide protrusion 22 guide and limit the anti-detachment pin 14. The anti-detachment pin 14 needs to rotate spirally to descend or rise. This prevents the anti-detachment pin 14 from falling off even if there is shaking during hoisting after it is inserted into the through hole of the support seat. Compared with the method of directly inserting the anti-detachment pin 14, the anti-detachment pin 14 is more stable in this design. Compared with the method of locking with bolts and nuts, this design has the characteristic of quick disassembly, taking into account both the stability of the connection and the convenience of disassembly and assembly.

[0019] The guide protrusion 22 and guide groove 20 can be machined into one piece, and the material can be high-strength steel. The anti-detachment pin 14 is also made of high-strength steel, and the surface can be coated with silicon nitride to ensure wear resistance and smooth sliding.

[0020] like Figure 4As shown, the anti-slip structure also includes a cap body 30, a handle 31, and a rotating ring 32. The handle 31 is fixedly connected to the cap body 30, and the rotating ring 32 is fixedly connected to the cap body 30. The cap body 30 is rotatably connected to the guide groove 20 through the rotating ring 32. The rotating ring 32 is a circular ring and is fixedly installed at the lower end of the cap body 30. The rotating ring 32 is rotatably set at the upper end of the anti-slip pin 14, and the handle 31 is fixedly installed at the upper end of the cap body 30. As a supplementary explanation to the above solution, in order to facilitate the lifting of the anti-detachment pin 14, a rotating ring 32 is set. When the handle 31 is pulled up, the handle 31 drives the cap 30 and the rotating ring 32. The rotating ring 32 pulls the anti-detachment pin 14 upward. During the upward movement, the anti-detachment pin 14 can rotate through the cooperation of the guide protrusion 22 and the guide groove 20. Similarly, when the handle 31 is pressed down, the mounting plate 13 can rotate in the opposite direction, which makes it convenient for the hand to hold and operate, simplifies the use method, and makes it more convenient.

[0021] like Figure 5 As shown, an excavator includes a chassis, a supporting cylinder welded to the chassis, a supporting seat welded to the supporting cylinder, a through hole in the supporting seat, and all the aforementioned chassis lifting tools connected to the supporting seat. A hook 10 is placed on the supporting seat, and a locking pin 14 is inserted into the through hole. When lifting the excavator chassis, two or more hooks 10 are used, each hook 10 placed on the supporting seat in a centrally symmetrical manner. The locking pin 14 is inserted into the through hole in the supporting connecting seat. The hook portion of the hook 10 hooks the bottom of the supporting connecting seat radially outward from the supporting seat. The hook 10 has a lifting hole, which is connected to a lifting rope via a lifting ring, thus securing the chassis to the lifting tool. Using this lifting tool to lift the excavator chassis provides convenient securing and stable lifting.

[0022] The working principle of this utility model is as follows: the guide ring 21 and the guide protrusion 22 guide and limit the anti-detachment pin 14. The anti-detachment pin 14 needs to rotate spirally to descend or rise. After the anti-detachment pin 14 is inserted into the through hole of the support seat, even if there is shaking during the hoisting process, it is not easy for the anti-detachment pin 14 to fall off. Pulling up the handle 31 drives the cap body 30 and the rotating ring 32. The rotating ring 32 pulls the anti-detachment pin 14 upward. During the upward movement, the anti-detachment pin 14 can rotate through the cooperation of the guide protrusion 22 and the guide groove 20. Similarly, when the handle 31 is pressed down, the mounting plate 13 can rotate in the opposite direction, which is convenient for hand gripping and operation.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A chassis spreader, characterized by, include: Two symmetrically arranged hooks (10) are rotatably connected by a first pin (11) and a second pin (12). The second pin (12) is rotatably connected to a mounting plate (13), and the mounting plate (13) is movably provided with a locking pin (14). An anti-detachment structure is provided between the mounting base plate (13) and the anti-detachment pin (14) to limit the anti-detachment pin (14). The anti-detachment structure includes a guide groove (20), a guide ring (21) and a guide protrusion (22). The guide ring (21) is fixedly connected to the mounting base plate (13), and the guide ring (21) is fixedly connected to the guide protrusion (22). The anti-detachment pin (14) has a guide groove (20), and the guide protrusion (22) is located in the guide groove (20). The anti-detachment pin (14) can rotate spirally.

2. The undercarriage spreader of claim 1, wherein: The mounting plate (13) is a U-shaped rod, and the top of the anti-detachment pin (14) is provided with a slot for installing the guide ring (21), and the guide ring (21) is welded in the slot.

3. The undercarriage spreader of claim 1, wherein: The anti-detachment pin (14) is a cylinder, and the guide ring (21) is a ring. The anti-detachment pin (14) and the guide ring (21) are in clearance fit.

4. The undercarriage spreader of claim 1, wherein: The guide groove (20) is a spiral groove, the guide protrusion (22) is a sphere, and two guide protrusions (22) are provided on the inner circumferential surface of the guide ring (21). The guide protrusions (22) and the guide groove (20) are in clearance fit.

5. The base frame lifting device according to claim 1, characterized in that: The anti-slip structure also includes a cap body (30), a pinch handle (31) and a rotating ring (32). The pinch handle (31) is fixedly connected to the cap body (30), the rotating ring (32) is fixedly connected to the cap body (30), and the cap body (30) is rotatably connected to the guide groove (20) through the rotating ring (32).

6. The undercarriage spreader of claim 5, wherein: The rotating ring (32) is a circular ring. The rotating ring (32) is fixedly installed at the lower end of the cap body (30). The rotating ring (32) is rotatably set at the upper end of the anti-detachment pin (14). The pinch handle (31) is fixedly installed at the upper end of the cap body (30).

7. An excavator comprising a base frame, a support cylinder welded to the base frame, a support seat welded to the support cylinder, and a through hole formed in the support seat. The support is connected to the base frame lifting device according to any one of claims 1-6, the hook (10) is placed on the support, and the anti-detachment pin (14) is inserted into the through hole.

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