CN215941645U - Hydraulic shear for small excavator - Google Patents
Hydraulic shear for small excavator Download PDFInfo
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- CN215941645U CN215941645U CN202122189443.8U CN202122189443U CN215941645U CN 215941645 U CN215941645 U CN 215941645U CN 202122189443 U CN202122189443 U CN 202122189443U CN 215941645 U CN215941645 U CN 215941645U
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- central joint
- shear
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Abstract
The utility model discloses a hydraulic shear of a small excavator, which comprises an upper frame, a fixed shear body, a movable shear body, a hydraulic oil cylinder and a central joint, wherein the upper frame is provided with a plurality of shear holes; an upper connecting plate is fixedly arranged at the lower end of the upper frame, and a lower connecting plate is fixedly arranged at the upper end of the fixed scissors body; the upper connecting plate is rotatably connected with the central joint, and the upper end of the central joint penetrates through the upper connecting plate; the lower connecting plate is fixedly connected with the central joint, and the lower end of the central joint penetrates through the lower connecting plate. Compared with the prior art, the utility model has the beneficial effects that: the device can play the effect that fixed scissors body rotates and oil pipe does not rotate through central joint and hydraulic oil conveying pole, prevents that fixed scissors body from driving oil pipe rotation when rotatory and causing oil pipe not hard up, establishes on the connecting plate down through the steel ball pressure, can prevent that frictional force is less to rotate too fast between upper junction plate and the lower connecting plate, and the alignment is sheared the thing that can not be fine, but does not hinder the rotation of fixed scissors body.
Description
Technical Field
The utility model relates to the technical field of hydraulic shears, in particular to a hydraulic shear of a small excavator.
Background
Excavator hydraulic pressure is cut mainly to be applied to renewable resources and retrieves, scrap steel scrap iron is cuted, the steel construction is demolishd and scraped car disassembles the operation, but traditional hydraulic pressure is cut and all can not be rotatory, is cutting because the effect of shear stress, and hydraulic pressure is cut and to have a pivoted power very easily, and this pivoted power causes hydraulic pressure very easily and cuts and the excavator arm leads to the fact the damage to it takes place danger to cause the rotation of article very easily during the shearing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hydraulic shear of a mini excavator, which solves the defects of the prior art in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a hydraulic shear of a mini excavator comprises an upper frame 1, a fixed shear body 2, a movable shear body 3, a hydraulic oil cylinder 4 and a central joint 5;
an upper connecting plate 6 is fixedly arranged at the lower end of the upper frame 1, and a lower connecting plate 7 is fixedly arranged at the upper end of the fixed scissors body 2;
the upper connecting plate 6 is rotatably connected with the central joint 5, and the upper end of the central joint 5 penetrates through the upper connecting plate 6;
the lower connecting plate 7 is fixedly connected with the central joint 5, and the lower end of the central joint 5 penetrates through the lower connecting plate 7;
the upper part of the central joint 5 is provided with a fixing ring 8, and the fixing ring 8 is pressed on the upper connecting plate 6;
the fixed scissor body 2 is hinged with a movable scissor body 3, and the movable scissor body 3 is provided with a shearing rod 9;
the inside of the fixed shear body 2 is hinged with the middle part of a hydraulic oil cylinder 4, and one end of the hydraulic oil cylinder 4 is hinged with the upper end of a shear rod 9.
Preferably, the upper connecting plate 6 is provided with a spring tube 10, and the spring tube 10 is vertically communicated;
the spring tube is characterized in that a threaded cover 11 is arranged inside the upper end of the spring tube 10, a spring 12 is arranged inside the middle of the spring tube 10, steel balls 13 are arranged on the lower portion of the spring 12, and the steel balls 13 are in friction contact with the lower connecting plate 7.
Preferably, the upper end of the central joint 5 is rotatably provided with a hydraulic oil conveying rod 14, and the hydraulic oil conveying rod 14 is connected with the central joint 5 through a hydraulic oil seal.
Preferably, the upper frame 1 is provided with a conveying rod fixing frame 15, and the conveying rod fixing frame 15 is sleeved on the hydraulic oil conveying rod 14.
Preferably, a fixed shearing knife 16 is arranged on one side of the lower portion of the fixed shearing body 2, a movable shearing knife 17 is arranged on one side of the lower portion of the movable shearing body 3, and the movable shearing knife 17 is of an arc-shaped structure.
Preferably, a hydraulic oil input port 18 is arranged on the hydraulic oil conveying rod 14, a hydraulic oil output port 19 is arranged at the lower end of the central joint 5, and the hydraulic oil output port 19 is connected with the hydraulic oil cylinder 4 through a hydraulic oil pipe.
Compared with the prior art, the utility model has the beneficial effects that:
1. the central joint and the hydraulic oil conveying rod can play a role in fixing the rotation of the shear body and preventing the oil pipe from loosening due to the fact that the oil pipe is driven to rotate when the fixed shear body rotates.
2. The steel balls are pressed on the lower connecting plate, so that the situation that the upper connecting plate and the lower connecting plate rotate too fast due to small friction force and cannot well align with a shear object can be prevented, but the rotation of the fixed shear body is not hindered.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic side view of the present invention.
FIG. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic front view of the present invention.
FIG. 5 is a schematic view of part A of the present invention.
In the figure: 1. the device comprises an upper frame, 2, a fixed shear body, 3, a movable shear body, 4, a hydraulic oil cylinder, 5, a center joint, 6, an upper connecting plate, 7, a lower connecting plate, 8, a fixing ring, 9, a shear rod, 10, a spring pipe, 11, a threaded cover, 12, a spring, 13, a steel ball, 14, a hydraulic oil conveying rod, 15, a conveying rod fixing frame, 16, a fixed shear knife, 17, a movable shear knife, 18, a hydraulic oil input port, 19 and a hydraulic oil output port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1 to 5, the hydraulic shear of the mini excavator comprises an upper frame 1, a fixed shear body 2, a movable shear body 3, a hydraulic oil cylinder 4 and a central joint 5;
an upper connecting plate 6 is fixedly arranged at the lower end of the upper frame 1, and a lower connecting plate 7 is fixedly arranged at the upper end of the fixed scissors body 2;
the upper connecting plate 6 is rotatably connected with the central joint 5, and the upper end of the central joint 5 penetrates through the upper connecting plate 6;
the lower connecting plate 7 is fixedly connected with the central joint 5, and the lower end of the central joint 5 penetrates through the lower connecting plate 7;
the upper part of the central joint 5 is provided with a fixing ring 8, and the fixing ring 8 is pressed on the upper connecting plate 6;
the fixed scissor body 2 is hinged with a movable scissor body 3, and the movable scissor body 3 is provided with a shearing rod 9;
the inside of the fixed shear body 2 is hinged with the middle of a hydraulic oil cylinder 4, one end of the hydraulic oil cylinder 4 is hinged with the upper end of a shear rod 9, the upper frame can be connected with an excavator arm, the upper connecting plate is rotatably connected with the lower connecting plate through a center joint, the lower connecting plate is fixedly connected with the center joint, the lower end of the center joint extends out of the lower connecting plate, the center joint is rotatably connected with the upper connecting plate, the fixed shear body is fixedly connected with the lower connecting plate, the center joint can be connected onto the upper connecting plate through a fixing ring, the center joint can be conveniently rotated on the upper connecting plate, the fixed shear body is hinged with the movable shear body, the stretching shear rod can be pushed through the hydraulic oil cylinder, the movable shear body can be driven to shear through pushing the stretching shear rod, the inside of the fixed shear body is hinged with the middle of the hydraulic oil cylinder, the stress angle is optimized, and the shearing force is enhanced.
The upper connecting plate 6 is provided with a spring tube 10, and the spring tube 10 is communicated up and down;
the spring tube 10 is characterized in that a threaded cover 11 is arranged inside the upper end of the spring tube 10, a spring 12 is arranged inside the middle of the spring tube 10, a steel ball 13 is arranged on the lower portion of the spring 12, the steel ball 13 is in friction contact with the lower connecting plate 7, the spring tube can facilitate placement of the steel ball, the threaded cover can facilitate replacement of the spring and the steel ball, the spring can push the steel ball, the steel ball can be pressed on the lower connecting plate, the situation that the upper connecting plate and the lower connecting plate rotate too fast due to small friction force can be prevented, shearing objects cannot be well aligned, and rotation of the fixed shearing body is not hindered at that time.
The upper end of the central joint 5 rotates to be provided with a hydraulic oil conveying rod 14, the hydraulic oil conveying rod 14 is connected with the central joint 5 through a hydraulic oil seal, the hydraulic oil conveying rod is connected with the central joint through an oil seal, the rotation of the fixed shear body and the non-rotation of the oil pipe can be prevented, the oil pipe is driven to rotate when the fixed shear body rotates, the looseness of the oil pipe is prevented, and the central joint and the hydraulic oil conveying rod have the function of conveying hydraulic oil.
Be equipped with conveying rod mount 15 on the upper rack 1, conveying rod mount 15 cover is established on hydraulic oil conveying rod 14, and the conveying rod mount can be fixed upper rack and hydraulic oil conveying rod, can play the effect that hydraulic oil conveying rod does not rotate when the center connects the rotation.
One side of the lower part of the fixed shearing body 2 is provided with a fixed shearing knife 16, one side of the lower part of the movable shearing body 3 is provided with a movable shearing knife 17, the movable shearing knife 17 is of an arc-shaped structure, and the fixed shearing knife and the movable shearing knife interact to shear.
The hydraulic oil conveying rod 14 is provided with a hydraulic oil inlet 18, the lower end of the central joint 5 is provided with a hydraulic oil outlet 19, the hydraulic oil outlet 19 is connected with the hydraulic oil cylinder 4 through a hydraulic oil pipe, the hydraulic oil inlet is connected with a hydraulic oil path on the excavator arm to provide power for the hydraulic shear, and the hydraulic oil outlet can provide power for the hydraulic oil cylinder to convey hydraulic oil.
Compared with the prior art, the utility model has the beneficial effects that:
1. the central joint and the hydraulic oil conveying rod can play a role in fixing the rotation of the shear body and preventing the oil pipe from loosening due to the fact that the oil pipe is driven to rotate when the fixed shear body rotates.
2. The steel balls are pressed on the lower connecting plate, so that the situation that the upper connecting plate and the lower connecting plate rotate too fast due to small friction force and cannot well align with a shear object can be prevented, but the rotation of the fixed shear body is not hindered.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions are considered to be within the protective scope of the present invention.
Claims (6)
1. A hydraulic shear of a mini excavator is characterized by comprising an upper frame (1), a fixed shear body (2), a movable shear body (3), a hydraulic oil cylinder (4) and a central joint (5);
an upper connecting plate (6) is fixedly arranged at the lower end of the upper frame (1), and a lower connecting plate (7) is fixedly arranged at the upper end of the fixed scissors body (2);
the upper connecting plate (6) is rotatably connected with the central joint (5), and the upper end of the central joint (5) penetrates through the upper connecting plate (6);
the lower connecting plate (7) is fixedly connected with the central joint (5), and the lower end of the central joint (5) penetrates through the lower connecting plate (7);
the upper part of the central joint (5) is provided with a fixing ring (8), and the fixing ring (8) is pressed on the upper connecting plate (6);
the fixed scissor body (2) is hinged with a movable scissor body (3), and the movable scissor body (3) is provided with a shearing rod (9);
the inside of the fixed shear body (2) is hinged with the middle part of a hydraulic oil cylinder (4), and one end of the hydraulic oil cylinder (4) is hinged with the upper end of a shear rod (9).
2. The hydraulic shears of the small excavator as claimed in claim 1, wherein a spring pipe (10) is arranged on the upper connecting plate (6), and the spring pipe (10) is vertically communicated;
the spring is characterized in that a threaded cover (11) is arranged inside the upper end of the spring tube (10), a spring (12) is arranged inside the middle of the spring tube (10), steel balls (13) are arranged on the lower portion of the spring (12), and the steel balls (13) are in friction contact with the lower connecting plate (7).
3. The hydraulic shears of the small-sized excavator is characterized in that a hydraulic oil conveying rod (14) is rotatably arranged at the upper end of the central joint (5), and the hydraulic oil conveying rod (14) is connected with the central joint (5) through a hydraulic oil seal.
4. The hydraulic shears of the small excavator as claimed in claim 1, wherein a conveying rod fixing frame (15) is arranged on the upper frame (1), and the conveying rod fixing frame (15) is sleeved on a hydraulic oil conveying rod (14).
5. The hydraulic shears of the mini-excavator as claimed in claim 1, wherein a fixed shearing knife (16) is arranged on one side of the lower portion of the fixed shear body (2), a movable shearing knife (17) is arranged on one side of the lower portion of the movable shear body (3), and the movable shearing knife (17) is of an arc-shaped structure.
6. The hydraulic shear of a small excavator according to claim 3, wherein a hydraulic oil inlet (18) is formed in the hydraulic oil conveying rod (14), a hydraulic oil outlet (19) is formed in the lower end of the center joint (5), and the hydraulic oil outlet (19) is connected with the hydraulic oil cylinder (4) through a hydraulic oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122189443.8U CN215941645U (en) | 2021-09-10 | 2021-09-10 | Hydraulic shear for small excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122189443.8U CN215941645U (en) | 2021-09-10 | 2021-09-10 | Hydraulic shear for small excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215941645U true CN215941645U (en) | 2022-03-04 |
Family
ID=80428922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122189443.8U Active CN215941645U (en) | 2021-09-10 | 2021-09-10 | Hydraulic shear for small excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215941645U (en) |
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2021
- 2021-09-10 CN CN202122189443.8U patent/CN215941645U/en active Active
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