CN218611927U - Rotary double-cylinder hydraulic shear with limiting mechanism - Google Patents

Abstract

The utility model relates to a rotatory double-cylinder hydraulic pressure is cut with stop gear, including the undercarriage, the undercarriage both sides all are equipped with articulated hydro-cylinder assembly and two sets of tong arms of symmetry setting, install the cutting edge on the tong arm, two sets of cutting edges constitute the scissors structure, and the hydro-cylinder assembly articulates with the tong arm of one-to-one correspondence, install the stop gear that can be regulated with the cooperation of one-to-one correspondence tong arm on the undercarriage, stop gear is used for restricting the tong arm to remove along its rotation axis direction; the limiting mechanism prevents the cutter from yielding outwards during shearing, and blocks the clamp arm from deviating along the axial direction of the rotating shaft, so that the shearing effect is improved. The limiting mechanism adopts an adjustable structure to adjust after being worn after being used for a long time, so that the optimal use state is kept; the hydraulic pipeline of the oil cylinder assembly is prevented from being wound in a rotating mode through the rotating structure.

Description

Rotary double-cylinder hydraulic shear with limiting mechanism

Technical Field

The utility model relates to a rotatory double-cylinder hydraulic pressure is cut with stop gear belongs to cutting tool equipment technical field.

Background

At present, single-cylinder hydraulic shearing or manual gas cutting is mainly used for shearing automobiles and waste steel. The single-cylinder hydraulic shear is small in shearing force and poor in shearing effect, only a steel structure with the height of about 10m can be disassembled at present, only a single-side blade of the single-cylinder hydraulic shear can be opened, the opening is small, and the structural section is not flexible to shear in high altitude. The high-altitude manual gas cutting has low efficiency and poor safety.

And the hydraulic shears can outwards let the rotating shears when shearing, so that the clamp arms are axially offset along the rotating shaft, the shearing effect is reduced, and the shears are easily damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotatory double-cylinder hydraulic pressure is cut with stop gear to solve the tong arm that provides among the above-mentioned background art and reduce the problem of shearing the effect easily at the ascending skew of pivot axle.

The technical scheme of the utility model as follows:

the utility model provides a rotatory double-cylinder hydraulic pressure is cut with stop gear, includes the undercarriage, and the undercarriage both sides all are equipped with the tong arm that articulated hydro-cylinder assembly and two sets of symmetries set up, install the cutting edge on the tong arm, and are two sets of the scissors structure is constituteed to the cutting edge, and hydro-cylinder assembly is articulated with the tong arm of one-to-one, install the stop gear with adjustable formula of one-to-one tong arm cooperation in the undercarriage, stop gear is used for restricting the tong arm and removes along its rotation axis direction.

Preferably, the clamp arm is rotatably connected to the lower frame through a rotating shaft.

Preferably, the edge of the lower frame is provided with a guard plate surrounding the rotating shaft and/or the limiting mechanism.

Preferably, the blade is detachably mounted to the jawarms by a bolt assembly.

Preferably, the cutting edge is of a non-linear configuration.

Preferably, the top of the lower frame is connected with an upper frame through a rotating assembly.

Preferably, a rotary joint is arranged on the upper rack, and a hydraulic pipeline of the oil cylinder assembly is connected with the rotary joint.

Preferably, the limiting mechanism comprises an arc-shaped tooth, a lower internal thread piece, a stopping piece, an upper internal thread piece and a thread limiting piece; the arc tooth is fixed in the lower frame, lower internal thread spare and last internal thread spare all with screw thread locating part screw-thread fit, the stopper moves along screw thread locating part axis direction and meshes or breaks away from with the arc tooth, lower internal thread spare and last internal thread spare are located the stopper and are used for pressing from both sides tight fixed stopper, screw thread locating part one end and tong arm butt cooperation.

Preferably, the outer wall of the thread limiting part is sleeved with a stop check ring located between the upper internal thread part and the retainer, the edge of the stop check ring is folded to be provided with a limiting clamping portion, and the upper internal thread part and the retainer are respectively provided with an upper limiting clamping groove and a lower limiting clamping groove matched with the limiting clamping portion.

Preferably, a lubricating channel is arranged between the two ends of the thread limiting part.

The utility model discloses following beneficial effect has:

the limiting mechanism prevents the cutter from yielding outwards during shearing, and blocks the clamp arm from deviating along the axial direction of the rotating shaft, so that the shearing effect is improved. The limiting mechanism adopts an adjustable structure to adjust after being worn after being used for a long time, so that the optimal use state is kept; the hydraulic pipeline of the oil cylinder assembly is prevented from being wound in a rotating mode through the rotary joint.

Drawings

FIG. 1 is a three-dimensional isometric view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of the structure of the rotating shaft with the frame and the rotary joint;

FIG. 4 is a schematic view of the limiting mechanism of the present invention;

FIG. 5 is a schematic illustration of the exploded structure of FIG. 4;

fig. 6 is a sectional view of the local structure of the limiting mechanism and the upper and lower mechanisms.

The reference numbers in the figures denote:

1. a lower frame; 2. a rotating shaft; 3. a clamp arm; 4. a blade; 5. an oil cylinder assembly; 6. a rotating assembly; 7. a limiting mechanism; 71. arc-shaped teeth; 72. a lower internal thread member; 73. a stopper; 731. a lower limiting clamping groove; 74. an upper internal thread member; 741. an upper limiting clamping groove; 75. a threaded stop; 76. a stop collar; 761. a limit clamp part; 8. an upper frame; 9. a rotary joint; 10. and (5) protecting the plate.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-6:

all articulated hydro-cylinder assembly 5 (hydraulic cylinder) in the 1 upper end left and right sides of undercarriage, 1 lower extreme left and right sides of undercarriage has forearm 3 through 2 swivelling joint of pivot, and 3 symmetries of two sets of tong arms set up, and hydro-cylinder assembly 5 is articulated with the tong arm 3 of one-to-one, and cutting edge 4 is installed to the back lateral wall of left side tong arm 3, and cutting edge 4 is installed to the preceding lateral wall of right side tong arm 3, and two sets of cutting edges 4 form the scissors structure and are used for shearing the work piece.

The oil cylinder assembly 5 stretches and retracts to drive the tong arms 3 which correspond one by one to rotate around the corresponding rotating shafts 2.

Cutting edge 4 is through a plurality of bolt assembly demountable installation on tong arm 3, and cutting edge 4 demountable gets off conveniently to maintain and change.

An upper frame 8 is mounted on the upper portion of the lower frame 1 via a rotating unit 6 (a rotating platform), and the upper frame 8 is mounted on an external mechanical device such as an excavator. As shown in fig. 3, the upper frame 8 is provided with a rotary joint 9, and the rotary joint 9 is relatively located at the center of the rotating assembly 6; the hydraulic pipelines of the two groups of oil cylinder assemblies 5 are connected with a rotary joint 9, the rotary joint 9 is connected with an external hydraulic oil circuit, the lower frame 1 and the upper frame 8 rotate through a rotating assembly 6 to realize the horizontal steering of the cutting edge 4, and meanwhile, the hydraulic pipelines of the oil cylinder assemblies 5 are prevented from rotating and winding in the rotating process through a rotating structure 9; as shown in fig. 2, the cutting edges 4 are in a non-linear structure, and the cutting edges 4 are in a similar obtuse angle structure, which is beneficial to the space between the two groups of cutting edges 4 to be large enough to grab more workpieces.

As shown in fig. 4-6, the arc-shaped teeth 71 are welded and fixed on the outer side wall of the lower frame 1, and the remaining lower internal thread member 72, the stop member 73, the upper internal thread member 74, the thread stop member 75 and the stop collar 76 are relatively movable for adjustment; the lower internal thread piece 72 (parallel to the axial direction of the rotating shaft 2) is in-situ rotated or fixedly connected to the lower frame 1, the lower end of the thread limiting piece 75 is in threaded connection with the lower internal thread piece 72, the lower end of the thread limiting piece 75 is abutted against the side wall of the jawarm 3, the stopping piece 73 is sleeved on the outer side wall of the thread limiting piece 75, the stopping piece 73 can only slide along the axial direction of the thread limiting piece 75, the stopping retaining ring 76 is sleeved on the outer side wall of the thread limiting piece 75, and the upper internal thread piece 74 is in threaded connection with the upper end of the thread limiting piece 75;

firstly, the lower end of the movable thread limit piece 75 is abutted against the side wall of the clamp arm 3; then, the stopper 73 is adjusted to move towards and engage with the arc-shaped teeth 71, at this time, the thread limiting piece 75 is relatively fixed and can not rotate under the matching of the stopper 73 and the arc-shaped teeth 71, then a group of limiting clamping portions 761 on the edge of the stopping retaining ring 76 are folded downwards and inserted into the lower limiting clamping groove 731, so that the stopping retaining ring 76 is fixed relative to the stopper 73, then the upper internal thread piece 74 is rotated to be close to the lower internal thread piece 72, and the upper internal thread piece 74 and the lower internal thread piece 72 are matched to clamp the stopper 73 and the stopping retaining ring 76 therein, so that the stopper 73 is prevented from being disengaged from the engaged arc-shaped teeth 71; then, another set of limiting card portions 761 at the edge of the retaining ring 76 is folded upwards and inserted into the upper limiting card slot 741, so as to block the subsequent rotation of the upper internal screw 74.

Because the two groups of blades 4 are matched with each other to shear components such as a steel structure, the reaction force of the steel structure pushes the two groups of blades 4 to tend to be away from each other along the axial direction of the rotating shaft 4, and because the lower end of the thread limiting piece 75 is abutted against the side wall of the clamp arm 3, the lower end of the thread limiting piece 75 is easily abraded due to relative friction between the clamp arm 3 rotating for a long time and the thread limiting piece 75; so that the two groups of blades 4 can not be tightly attached to reduce the shearing effect; the limiting mechanism 7 is designed to be adjustable conveniently in an adjustable structure.

Therefore, two sets of limiting mechanisms 7 are installed on the lower rack 1, the lower ends of the thread limiting members 75 in the two sets of limiting mechanisms 7 are respectively abutted to the side walls of the jawarms 3, the blades 4 are fixedly installed at the positions of the jawarms 3 and cannot deviate, and the thread limiting members 75 are used for preventing reverse thrust in the shearing process from causing the jawarms 3 to deviate along the axial direction of the rotating shaft 2 relative to the lower rack 1.

As shown in fig. 6, a lubrication channel is formed between two ends of the thread limiting member 75, so that a user can inject lubricating oil into the lower end of the thread limiting member 75 through the lubrication channel, and the lubricating oil can reduce the friction between the thread limiting member 75 and the jawarm 3.

As shown in fig. 1-2, the structure of the guard plate 10 is adapted to the outer contour of the edge of the lower frame 1, the guard plate 10 is welded and fixed to the edge of the lower frame 10, the guard plate 10 relatively encloses the corresponding rotating shaft 2 and the limiting mechanism 7, and the guard plate 10 prevents the cutting blade 4 from shearing the workpiece and colliding with the rotating shaft 2 and the limiting mechanism 7.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. The utility model provides a rotatory double-cylinder hydraulic pressure is cut with stop gear, includes subframe (1), and subframe (1) both sides all are equipped with articulated hydro-cylinder assembly (5) and tong arm (3) that two sets of symmetries set up, install cutting edge (4) on tong arm (3), and are two sets of scissors structure is constituteed to cutting edge (4), and hydro-cylinder assembly (5) are articulated with tong arm (3) of one-to-one, its characterized in that: and the lower rack (1) is provided with a limiting mechanism (7) which is matched with the clamp arms (3) in a one-to-one correspondence and can be adjusted, and the limiting mechanism (7) is used for limiting the clamp arms (3) to move along the direction of the rotation axis of the clamp arms.

2. The rotary double-cylinder hydraulic shear with the limit mechanism as claimed in claim 1, wherein: the clamp arm (3) is rotatably connected to the lower rack (1) through a rotating shaft (2).

3. The rotary double-cylinder hydraulic shear with the limit mechanism as claimed in claim 2, wherein: and a guard plate (10) surrounding the rotating shaft (2) and/or the limiting mechanism (7) is arranged at the edge of the lower rack (1).

4. The rotary double-cylinder hydraulic shear with a limiting mechanism according to claim 1, characterized in that: the cutting edge (4) is detachably mounted on the clamp arm (3) through a bolt assembly.

5. The rotary double-cylinder hydraulic shear with the limit mechanism as claimed in claim 1, wherein: the blade (4) is in a nonlinear structure.

6. The rotary double-cylinder hydraulic shear with the limit mechanism as claimed in claim 1, wherein: the top of the lower rack (1) is connected with an upper rack (8) through a rotating component (6).

7. The rotary double-cylinder hydraulic shear with the limit mechanism as claimed in claim 6, wherein: a rotary joint (9) is arranged on the upper rack (8), and a hydraulic pipeline of the oil cylinder assembly (5) is connected with the rotary joint (9).

8. The rotary double-cylinder hydraulic shear with the limit mechanism as claimed in claim 1, wherein: the limiting mechanism (7) comprises arc teeth (71), a lower internal thread piece (72), a stopping piece (73), an upper internal thread piece (74) and a thread limiting piece (75); arc tooth (71) are fixed in lower frame (1), lower internal thread spare (72) and last internal thread spare (74) all with screw thread locating part (75) screw-thread fit, stopper (73) move along screw thread locating part (75) axis direction and mesh with arc tooth (71) or break away from, lower internal thread spare (72) and last internal thread spare (74) are located stopper (73) and are used for pressing from both sides tight fixed stopper (73), screw thread locating part (75) one end and tong arm (3) butt cooperation.

9. The rotary double-cylinder hydraulic shear with a limiting mechanism according to claim 8, wherein: the outer wall of the thread limiting piece (75) is sleeved with a stop check ring (76) located between the upper internal thread piece (74) and the stop piece (73), the edge of the stop check ring (76) is provided with a limit clamping portion (761) in a folding mode, and the upper internal thread piece (74) and the stop piece (73) are respectively provided with an upper limit clamping groove (741) and a lower limit clamping groove (731) matched with the limit clamping portion (761).

10. The rotary double-cylinder hydraulic shear with a limiting mechanism according to claim 8, wherein: and a lubricating channel is arranged between the two ends of the thread limiting piece (75).

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