CN216613724U - Lifting appliance - Google Patents
Lifting appliance Download PDFInfo
- Publication number
- CN216613724U CN216613724U CN202122865648.3U CN202122865648U CN216613724U CN 216613724 U CN216613724 U CN 216613724U CN 202122865648 U CN202122865648 U CN 202122865648U CN 216613724 U CN216613724 U CN 216613724U
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- lifting appliance
- movable arm
- rear support
- lifting
- main body
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Abstract
The utility model relates to a lifting appliance, aiming at solving the problem of lifting safety risk caused by the fact that an existing excavator movable arm rear support does not have a proper lifting appliance, the lifting appliance is constructed and used for lifting the movable arm rear support of an excavator, the lifting appliance is provided with a lifting appliance main body which is used for being attached and matched with the top surface and the rear end arc cylindrical surface of the movable arm rear support, the lifting appliance main body is formed by bending a steel plate, the front end of the lifting appliance main body protrudes forwards from the front end surface of the movable arm rear support, a limiting plate which extends to the front side of the front end surface of the movable arm rear support is fixedly arranged at the front end of the lifting appliance main body, a screw jacking device which is in contact with the front end surface of the movable arm rear support and jacks the movable arm rear support backwards is mounted on the limiting plate, and a lifting lug is arranged at the top of the lifting appliance main body. According to the utility model, the lifting appliance is used for lifting, the movable arm rear support does not need to be bound, the relative position of the lifting appliance and the movable arm rear support is fixed, the gravity center is fixed during lifting, the lifting appliance cannot deflect, the connection between the lifting appliance and the movable arm rear support is firm and reliable, and safety accidents are not easy to occur.
Description
Technical Field
The utility model relates to a lifting appliance, in particular to a lifting appliance for transporting cast steel parts.
Background
The excavator movable arm rear support is a steel casting, the front end face of the excavator movable arm rear support is square and used for being welded with a left web plate, a right web plate, an upper wing plate and a lower wing plate of the movable arm, and a pin shaft hole in the left-right direction is formed in the rear end of the excavator movable arm rear support. The distance between the upper side surface and the lower side surface of the rear support of the movable arm gradually shrinks backwards, and the upper side surface and the lower side surface of the rear support of the movable arm are connected through an arc-shaped cylindrical surface at the arrangement position of the pin shaft.
During manufacturing, most excavator structural parts are mainly welded, and a welding workpiece needs to be transferred to a welding platform in the welding and assembling process. The existing hoisting mode of the movable arm rear support is to hoist by adopting a sling binding mode, but due to the appearance characteristics of the movable arm rear support, the mode cannot control the stress direction and the gravity direction of a workpiece to be on the same straight line when hoisting, so that the workpiece deflects and topples when hoisting; secondly, the edges of the machined surfaces of the steel casting machine are sharp, and the hanging strips are easily cut during lifting, so that the broken workpieces fall off, and the movable arm rear support has higher safety risk in the process of allocation and transportation by adopting the mode of binding the hanging strips.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lifting appliance for lifting a rear support of a movable arm of an excavator, which aims to solve the technical problem that the lifting safety risk is caused because the conventional rear support of the movable arm of the excavator does not have a proper lifting appliance.
The technical scheme for realizing the purpose of the utility model is as follows: the lifting appliance is characterized by comprising a lifting appliance main body which is used for being attached and matched with the top surface and the rear end arc cylindrical surface of the movable arm rear support, the lifting appliance main body is formed by bending a steel plate, the front end of the lifting appliance main body protrudes forwards from the front end surface of the movable arm rear support, a limiting plate which extends to the front side of the front end surface of the movable arm rear support is fixedly arranged at the front end of the lifting appliance main body, a screw jacking device which is in contact with the front end surface of the movable arm rear support and jacks the movable arm rear support backwards is mounted on the limiting plate, and a lifting lug is arranged at the top of the lifting appliance main body. When the rear support of the movable arm of the excavator is hoisted, the screw jacking device is loosened firstly, so that the rear end of the screw jacking device and the rear end of the hanger main body have enough space to enable the rear support of the movable arm to enter the hanger, then the screw jacking device is screwed, and the top surface and the rear end arc cylindrical surface of the rear support of the movable arm are attached to the hanger main body and are jacked and fixed therein by the screw jacking device. After the movable arm rear support is fixed by the lifting appliance, the lifting appliance can be connected with the lifting lugs on the lifting appliance main body, so that the lifting of the movable arm rear support is realized. According to the utility model, the lifting appliance is used for lifting, the movable arm rear support does not need to be bound, the relative position of the lifting appliance and the movable arm rear support is fixed, the gravity center is fixed during lifting, the lifting appliance cannot deflect, the connection between the lifting appliance and the movable arm rear support is firm and reliable, and safety accidents are not easy to occur.
In the lifting appliance, the screw jacking device comprises a nut fixed on the limiting plate, a screw matched with the nut, and a stress application rod arranged at the front end of the screw and used for rotating the screw. Furthermore, a pressing plate used for being in contact with the front end face of the movable arm rear support is installed at the rear end of the screw rod. The pressure plate increases the contact area of the screw and the movable arm rear support.
In the lifting appliance, the top surface of the lifting appliance main body is welded with at least one reinforcing rib, and the reinforcing rib extends from the front end of the lifting appliance main body to the rear end of the lifting appliance main body along the top surface of the lifting appliance main body. The reinforcing ribs are added, so that the bending strength of the hanger main body can be improved on the premise of less weight increase. Further, the height of the reinforcing ribs in the direction perpendicular to the surface of the hanger main body is larger than the thickness of the hanger main body.
In the lifting appliance, the reinforcing rib is arranged in the middle in the left-right direction of the lifting appliance main body, and the lifting lugs are arranged on the reinforcing rib. Further, the limiting plate is arranged in the middle in the left-right direction, and the upper end of the limiting plate is welded with the hanger main body and the front end of the reinforcing rib.
In the lifting appliance, the top surface of the lifting appliance main body is provided with the handle. In the lifting process, an operator can hold the handle on the lifting appliance main body by hands to control the moving direction of the lifting appliance main body.
In the lifting appliance, the reinforcing ribs are also provided with dismounting lifting lugs, and the dismounting lifting lugs are positioned at the middle rear part of the lifting appliance main body. After the movable arm rear support is lifted to a preset position, the movable arm rear support is placed on the ground, the connection between the lifting device and the lifting lugs on the lifting appliance main body is loosened, the screw jacking device is loosened, the lifting device is connected with the disassembling lugs, and when the disassembling lugs are lifted upwards, the rear part of the lifting appliance main body can be lifted upwards, so that the lifting appliance is separated from the contact with the movable arm rear support.
Compared with the prior art, the lifting appliance is used for lifting, the movable arm rear support does not need to be bound, the relative position of the lifting appliance and the movable arm rear support is fixed, the center of gravity is fixed during lifting, deflection is avoided, the lifting appliance and the movable arm rear support are firmly and reliably connected, and safety accidents are not easy to happen.
Drawings
Fig. 1 is a front view of a spreader of the present invention.
FIG. 2 is a left side view of the spreader of the present invention
Fig. 3 is a top view of the spreader of the present invention.
Fig. 4 is a schematic view of the connection of the spreader of the present invention to the rear support of the boom of the excavator.
Fig. 5 is a perspective view of the connection of the spreader of the present invention to the excavator boom rear mount.
Part names and serial numbers in the figure:
the lifting appliance comprises a lifting appliance main body 1, reinforcing ribs 2, a limiting plate 3, a lifting lug 4, a screw rod 5, a nut 6, a stress application rod 7, a pressing plate 8, a dismounting lug 9, a handle 10, a movable arm rear support 11 and a pin shaft hole 12.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
The lifting appliance in the embodiment is a special lifting appliance for lifting a movable arm rear support of an excavator.
As shown in fig. 4 and 5, the excavator boom rear support 11 is a steel casting, the front end surface of the excavator boom rear support is square, the front end surface of the excavator boom rear support is used for being welded with a left web plate, a right web plate, an upper wing plate and a lower wing plate of the boom, and the rear end of the excavator boom rear support is provided with a pin shaft hole 12 which runs left and right. The distance between the upper side surface and the lower side surface of the movable arm rear support gradually shrinks backwards, and the movable arm rear support is connected with the pin shaft through an arc cylindrical surface.
As shown in fig. 1 to 5, the lifting appliance has a lifting appliance main body 1 for fitting with the top surface and the rear end arc cylindrical surface of the movable arm rear support 11, the lifting appliance main body 1 is formed by bending a steel plate, the front end of the lifting appliance main body 1 protrudes forward from the front end surface of the movable arm rear support 11, a limit plate 3 extending to the front side of the front end surface of the movable arm rear support is fixedly arranged at the front end of the lifting appliance main body 1, and a screw tightening device which is in contact with the front end surface of the movable arm rear support and tightens the movable arm rear support backward is mounted on the limit plate 3.
The screw jacking device comprises a nut 6 fixed on the limiting plate 3, a screw 5 matched with the nut 6 and a forcing rod 7 arranged at the front end of the screw 5 and used for rotating the screw. And a pressing plate 8 used for being in contact with the front end surface of the movable arm rear support is installed at the rear end of the screw 5, and the contact area between the screw 5 and the movable arm rear support 11 is increased by the pressing plate 8.
The top surface welding of hoist main part 1 has a strengthening rib 2, and strengthening rib 2 extends to the rear end of hoist main part 1 along hoist main part top surface from the front end of hoist main part always. The height of the reinforcing ribs 2 in the direction perpendicular to the surface of the hanger main body is larger than the thickness of the hanger main body. The reinforcing ribs are added, so that the bending strength of the hanger main body can be improved on the premise of less weight increase.
The reinforcing rib 2 is arranged in the center in the left-right direction of the spreader main body 1, and as shown in fig. 2, the lifting lugs 4 are provided on the reinforcing rib 2. The limiting plate 3 is arranged in the middle in the left-right direction, and the upper end of the limiting plate is welded with the front ends of the lifting appliance main body 1 and the reinforcing ribs 2.
The reinforcing rib 2 is also provided with a handle 10 and a dismounting lifting lug 9. In the lifting process, an operator can hold the handle by hands to control the moving direction of the lifting appliance main body and prevent the lifting appliance main body from shaking. The dismounting lug 9 is located at the rear central portion of the spreader body 1. After the movable arm rear support is lifted to a preset position, the movable arm rear support is placed on the ground, the connection between the lifting device and the lifting lugs on the lifting appliance main body is loosened, the screw jacking device is loosened, the lifting device is connected with the disassembling lugs, and when the disassembling lugs are lifted upwards, the rear part of the lifting appliance main body can be lifted upwards, so that the lifting appliance is separated from the contact with the movable arm rear support.
As shown in fig. 4, the central angle AOB corresponding to the arc bending end of the rear end of the spreader main body is greater than 90 degrees, where point a is the end point of the bending section of the rear end of the spreader main body, point O is the center of the arc bending section, and point B is the starting point of the bending section of the rear end of the spreader main body.
In the utility model, when the rear support of the movable arm of the excavator is hoisted, as shown in fig. 4 and 5, the screw jacking device is firstly loosened, so that the rear end of the screw jacking device and the rear end of the hanger main body have enough space for the rear support of the movable arm to enter the hanger. And the movable arm rear support enters a space between the screw jacking device and the hanger main body, then the screw jacking device is screwed down, and the top surface and the rear end arc cylindrical surface of the movable arm rear support are attached to the hanger main body and are jacked and fixed in the space by the screw jacking device. After the lifting appliance is fixedly connected with the movable arm rear support, the lifting appliance can be connected with the lifting lugs on the lifting appliance main body, so that the lifting of the movable arm rear support is realized. According to the utility model, the lifting appliance is used for lifting, the movable arm rear support is lifted by using the lifting appliance, the movable arm rear support does not need to be bound, the relative position of the lifting appliance and the movable arm rear support is fixed, an operator can easily master the gravity center position of the lifting appliance, the movable arm rear support is prevented from deflecting in a larger figure during lifting, the lifting appliance and the movable arm rear support are firmly and reliably connected, and safety accidents are not easy to occur.
Claims (10)
1. A lifting appliance is used for lifting a movable arm rear support of an excavator and is characterized by comprising a lifting appliance main body which is used for being attached and matched with the top surface and the rear end arc cylindrical surface of the movable arm rear support, the lifting appliance main body is formed by bending a steel plate, the front end of the lifting appliance main body protrudes forwards out of the front end surface of the movable arm rear support, a limiting plate extending to the front side of the front end surface of the movable arm rear support is fixedly arranged at the front end of the lifting appliance main body, a screw jacking device which is in contact with the front end surface of the movable arm rear support and jacks the movable arm rear support backwards is mounted on the limiting plate, and a lifting lug is arranged at the top of the lifting appliance main body.
2. The lifting appliance according to claim 1, wherein the screw tightening device comprises a nut fixed on the limiting plate, a screw engaged with the nut, and a forcing rod mounted at the front end of the screw for rotating the screw.
3. The spreader according to claim 1 or 2, wherein the top surface of the spreader body is welded with at least one reinforcing rib, and the reinforcing rib extends from the front end of the spreader body to the rear end of the spreader body along the top surface of the spreader body.
4. The spreader according to claim 3, wherein the reinforcing bar is arranged centrally in the left-right direction of the spreader main body, and the lifting lug is provided on the reinforcing bar.
5. The spreader according to claim 3, wherein the limiting plate is centrally disposed in the left-right direction, and the upper end thereof is welded to both the spreader body and the front end of the reinforcing bar.
6. The spreader according to claim 5, wherein the rear end of the screw is provided with a pressing plate for contacting with the front end surface of the rear support of the movable arm.
7. The spreader of claim 3, wherein the height of the reinforcing bar in a direction perpendicular to the surface of the spreader body is greater than the thickness of the spreader body itself.
8. The spreader of claim 1, wherein the top surface of the spreader body is provided with a handle.
9. The spreader of claim 4, wherein the reinforcing bars are further provided with a removal lug, and the removal lug is located at the rear middle portion of the spreader body.
10. The lifting appliance according to claim 1, wherein a central angle corresponding to an arc bending portion at which the rear end of the lifting appliance main body is fitted against the arc cylindrical surface at the rear end of the movable arm rear support is greater than 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122865648.3U CN216613724U (en) | 2021-11-22 | 2021-11-22 | Lifting appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122865648.3U CN216613724U (en) | 2021-11-22 | 2021-11-22 | Lifting appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216613724U true CN216613724U (en) | 2022-05-27 |
Family
ID=81696760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122865648.3U Active CN216613724U (en) | 2021-11-22 | 2021-11-22 | Lifting appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216613724U (en) |
-
2021
- 2021-11-22 CN CN202122865648.3U patent/CN216613724U/en active Active
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