CN216882836U

CN216882836U - 300t hydraulic clamp

Info

Publication number: CN216882836U
Application number: CN202220070168.XU
Authority: CN
Inventors: 陈昊; 陈风亮; 陈铁
Original assignee: Shandong Boshile Developed Machinery Technology Co ltd
Current assignee: Shandong Boshile Developed Machinery Technology Co ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-07-05
Anticipated expiration: 2032-01-06

Abstract

The utility model discloses a 300t hydraulic clamp which comprises a base, wherein two supporting rods are fixedly connected to two sides of the top of the base, the top ends of the four supporting rods are fixedly provided with a same top plate, a hydraulic cylinder is embedded in the top of the top plate, an output shaft of the hydraulic cylinder extends to the lower portion of the top plate and is fixedly provided with a circular pressure plate, L-shaped rods are fixedly arranged on two sides of the top of the circular pressure plate, two square holes are formed in the top of the top plate, one sides, far away from each other, of the two square holes are both arranged in an opening mode, the tops of the L-shaped rods penetrate through the corresponding square holes and extend to the upper portion of the top plate, and one side, close to each other, of the two supporting rods on the same side is fixedly provided with a same transverse plate. The clamping device is reasonable in design, facilitates synchronous clamping of workpieces of different specifications from the upper side and the left side and the right side by single driving, improves clamping stability, effectively reduces the phenomenon of deflection of the workpieces in the machining process, and meets use requirements.

Description

300t hydraulic clamp

Technical Field

The utility model relates to the technical field of hydraulic clamps, in particular to a 300t hydraulic clamp.

Background

The hydraulic clamp is a clamp which realizes automatic positioning, supporting and clamping of a workpiece through hydraulic control, has the advantages of large clamping force, reliable clamping, stable work, convenient use and the like, and is widely applied to scenes such as numerical control machines, machining centers, automatic production lines and the like.

The mode that present hydraulic clamp adopted drive splint to reciprocate mostly carries out the centre gripping to the work piece, and it is not convenient for realize simultaneously about and synchronous centre gripping about with to the work piece, has reduced the centre gripping stability to the work piece, leads to the work piece to take place the incline easily in the course of working, can't satisfy the user demand, therefore we have provided a 300t hydraulic clamp and have been used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a 300t hydraulic clamp.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a300 t hydraulic clamp comprises a base, wherein two support rods are fixedly connected to two sides of the top of the base, the top ends of the four support rods are fixedly provided with a same top plate, a hydraulic cylinder is embedded in the top of the top plate, an output shaft of the hydraulic cylinder extends to the lower portion of the top plate and is fixedly provided with a circular pressure plate, L-shaped rods are fixedly arranged on two sides of the top of the circular pressure plate, two square holes are formed in the top of the top plate, the sides, far away from each other, of the two square holes are both provided with openings, the top of the L-shaped rod penetrates through the corresponding square holes and extends to the upper portion of the top plate, the side, close to each other, of the two support rods on the same side is fixedly provided with a same transverse plate, one side, far away from each other, of the two transverse plates is rotatably provided with a rotating shaft, a rack is fixedly arranged on the inner wall of the top of the L-shaped rod, and a gear meshed with the corresponding rack is fixedly sleeved on the rotating shaft, the rotating shaft is fixedly sleeved with a large chain wheel, the base is provided with two cavities, movable plates are arranged in the two cavities in a sliding manner, the tops of the two movable plates extend to the upper side of the base, rectangular plates are arranged on the sides, close to each other, of the two movable plates, a plurality of springs are fixedly mounted on the sides, far away from each other, of the two rectangular plates, one ends, far away from the corresponding rectangular plates, of the springs are fixedly connected with the sides, close to the rectangular plates, of the movable plates, rubber sleeves are fixedly bonded on the sides, far away from each other, of the two rectangular plates, one sides, far away from each other, of the two rubber sleeves are fixedly connected with the sides, close to the rectangular plates, of the corresponding movable plates respectively, the springs are located in the corresponding rubber sleeves, round rods are rotatably mounted on the inner walls, far away from each of the two cavities, one ends, far away from each round rods extend to the outer side of the base and are fixedly sleeved with small chain wheels, the small chain wheel and the corresponding large chain wheel are in transmission connection with the same chain, one side, away from each other, of the two movable plates is fixedly provided with a screw rod sleeved with the corresponding round rod thread, and the thread turning directions of the two screw rods are opposite.

Preferably, the top of the top plate is provided with a mounting hole, and the inner wall of the mounting hole is fixedly connected with the outer side of the hydraulic cylinder.

Preferably, one side of each L-shaped rod, which is close to each other, is in movable contact with the inner wall of one side of each square hole, which is close to each other.

Preferably, two one sides of the transverse plates, which are far away from each other, are provided with first circular grooves, first bearings are fixedly installed in the first circular grooves, and inner rings of the first bearings are fixedly sleeved with the outer sides of the corresponding rotating shafts.

Preferably, the inner walls of the bottoms of the two cavities are fixedly provided with T-shaped sliding rails, and the bottom of the moving plate is provided with T-shaped sliding chutes in sliding fit with the corresponding T-shaped sliding rails.

Preferably, two equal fixed mounting in one side that the rectangular plate kept away from each other has two guide bars, and the guide way with the guide bar sliding fit that corresponds is all seted up to the one side that two movable plates are close to each other.

Preferably, two the second circular groove has all been seted up on the one side inner wall that the cavity kept away from each other, and fixed mounting has the second bearing in the second circular groove, the fixed suit in the outside of the inner circle of second bearing and the round bar that corresponds, two circular perforation has all been seted up on the one side inner wall that the second circular groove kept away from each other, circular perforated inner wall and the outside movable contact of the round bar that corresponds, and the rectangle is perforated seted up on the top inner wall of cavity, and the perforated front side inner wall of rectangle and one side sliding contact that the rear side inner wall corresponds with the movable plate respectively.

Preferably, the end of each of the two round rods close to each other is provided with a thread groove sleeved with the corresponding screw thread.

Compared with the prior art, the utility model has the beneficial effects that:

the clamping device is reasonable in design, facilitates synchronous clamping of workpieces of different specifications from the upper side and the left side and the right side by single driving, improves clamping stability, effectively reduces the phenomenon of deflection of the workpieces in the machining process, and meets use requirements.

Drawings

FIG. 1 is a schematic structural view of a 300t hydraulic clamp according to the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of portion B of FIG. 2;

fig. 5 is a schematic top view of a hydraulic cylinder and top plate connection of a 300t hydraulic clamp according to the present invention.

In the figure: 1. a base; 2. a support bar; 3. a rotating shaft; 4. a rack; 5. an L-shaped rod; 6. a hydraulic cylinder; 7. a top plate; 8. a large sprocket; 9. a gear; 10. a chain; 11. moving the plate; 12. a cavity; 13. a screw; 14. a round bar; 15. a small sprocket; 16. a rubber sleeve; 17. a rectangular plate; 18. a spring; 19. a square hole; 20. a transverse plate.

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.

Referring to fig. 1-5, a 300t hydraulic clamp comprises a base 1, two support rods 2 are fixedly connected to two sides of the top of the base 1, a same top plate 7 is fixedly installed at the top ends of the four support rods 2, a hydraulic cylinder 6 is embedded at the top of the top plate 7, an output shaft of the hydraulic cylinder 6 extends to the lower portion of the top plate 7 and is fixedly installed with a circular pressure plate, L-shaped rods 5 are fixedly installed at two sides of the top of the circular pressure plate, two square holes 19 are formed in the top of the top plate 7, the sides, away from each other, of the two square holes 19 are both arranged in an open manner, the top of each L-shaped rod 5 extends to the upper portion of the top plate 7 through the corresponding square hole 19, a same transverse plate 20 is fixedly installed at the side, close to each other, of the two support rods 2 at the same side, a rotating shaft 3 is rotatably installed at the side, a rack 4 is fixedly installed on the inner wall of the top of each L-shaped rod 5, a gear 9 meshed with a corresponding rack 4 is fixedly sleeved on the rotating shaft 3, a large chain wheel 8 is fixedly sleeved on the rotating shaft 3, two cavities 12 are formed in the base 1, moving plates 11 are arranged in the two cavities 12 in a sliding manner, the tops of the two moving plates 11 extend to the upper side of the base 1, rectangular plates 17 are arranged on the sides, close to each other, of the two moving plates 11, a plurality of springs 18 are fixedly mounted on the sides, far away from each other, of the two rectangular plates 17, one ends, far away from the corresponding rectangular plates 17, of the springs 18 are fixedly connected with the sides, close to the rectangular plates 17, of the moving plates 11, rubber sleeves 16 are fixedly bonded on the sides, far away from each other, of the two rubber sleeves 16 are fixedly connected with the sides, close to the rectangular plates 17, of the corresponding moving plates 11, of the two moving plates 11, the springs 18 are located in the corresponding rubber sleeves 16, round rods 14 are rotatably mounted on the inner walls of the sides, far away from each other, of the two cavities 12, the clamping device is reasonable in design, facilitates single driving to synchronously clamp workpieces of different specifications from top and left and right, improves clamping stability, effectively reduces the phenomenon that the workpieces incline in the machining process, and meets use requirements.

In the utility model, a mounting hole is arranged at the top of a top plate 7, the inner wall of the mounting hole is fixedly connected with the outer side of a hydraulic cylinder 6, one side of two L-shaped rods 5 which are close to each other is respectively in movable contact with the inner wall of one side of two square holes 19 which are close to each other, one side of two transverse plates 20 which are far away from each other is respectively provided with a first circular groove, a first bearing is fixedly arranged in the first circular groove, the inner ring of the first bearing is fixedly sleeved with the outer side of a corresponding rotating shaft 3, the inner walls of the bottoms of two cavities 12 are respectively and fixedly provided with a T-shaped sliding rail, the bottom of a moving plate 11 is provided with a T-shaped sliding groove which is in sliding fit with the corresponding T-shaped sliding rail, one side of two rectangular plates 17 which is far away from each other is respectively and fixedly provided with two guide rods, one side of two moving plates 11 which are close to each other is provided with a guide groove which is in sliding fit with the corresponding guide rod, one side of two cavities 12 which is far away from each other is provided with a second circular groove, the second bearing is fixedly arranged in the second circular groove, the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding circular rod 14, circular through holes are formed in the inner wall of one side, far away from each other, of each of the two second circular grooves, the inner wall of each circular through hole is in movable contact with the outer side of the corresponding circular rod 14, a rectangular through hole is formed in the inner wall of the top of the cavity 12, the inner wall of the front side and the inner wall of the rear side of each rectangular through hole are in sliding contact with one side, corresponding to the movable plate 11, of the corresponding movable plate, and the end, close to each other, of each circular rod 14 is provided with a threaded groove in threaded sleeving connection with the corresponding threaded rod 13.

The working principle is as follows: when in use, when clamping operation is required, a workpiece to be clamped is placed at the top of the base 1, the hydraulic cylinder 6 is started, the hydraulic cylinder 6 drives the circular pressure plate to move downwards, the circular pressure plate drives the two L-shaped rods 5 to move downwards, the L-shaped rods 5 drive the corresponding racks 4 to move downwards, the racks 4 move downwards and simultaneously drive the gears 9 meshed with the racks to rotate, the gears 9 drive the corresponding rotating shafts 3 to rotate, the rotating shafts 3 drive the corresponding large chain wheels 8 to rotate, the large chain wheels 8 drive the small chain wheels 15 to rotate through the corresponding chains 10, the small chain wheels 15 drive the corresponding round rods 14 to rotate, the two round rods 14 rotate and drive the screw rods 13 sleeved with the threads of the round rods to move towards the direction close to each other, the two screw rods 13 rotate and drive the two movable plates 11 to move towards the direction close to each other, the two screw rods 11 respectively drive the rectangular plates 17 to move towards the direction close to the workpiece through the corresponding springs 18, when two rectangular plates 17 move to the outside contact with the work piece, restriction rectangular plate 17 continues to move, moving plate 11 continues to move and compresses corresponding spring 18 and rubber sleeve 16, moving plate 11 produces the extrusion force to rectangular plate 17 through corresponding spring 18 and rubber sleeve 16, rectangular plate 17 extrudes the work piece, until the bottom of circular pressure disk contacts with the top of work piece, shut down pneumatic cylinder 6, the work piece is pressed from both sides tightly fixedly at this moment, carry out synchronous centre gripping from top and left and right sides to different specification work pieces through single drive, improve centre gripping stability, thereby effectively reduce the phenomenon that the work piece skew appears in the course of working.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The 300t hydraulic clamp comprises a base (1) and is characterized in that two support rods (2) are fixedly connected to two sides of the top of the base (1), a same top plate (7) is fixedly mounted at the top ends of the four support rods (2), a hydraulic cylinder (6) is embedded in the top of the top plate (7), an output shaft of the hydraulic cylinder (6) extends to the lower portion of the top plate (7) and is fixedly mounted with a circular pressure plate, L-shaped rods (5) are fixedly mounted on two sides of the top of the circular pressure plate, two square holes (19) are formed in the top of the top plate (7), one side, away from each other, of each square hole (19) is provided with an opening, the top of each L-shaped rod (5) penetrates through the corresponding square hole (19) and extends to the upper portion of the top plate (7), and a same transverse plate (20) is fixedly mounted on one side, close to each other, of the two support rods (2) positioned on the same side, one side, far away from each other, of each transverse plate (20) is rotatably provided with a rotating shaft (3), a rack (4) is fixedly arranged on the inner wall of the top of each L-shaped rod (5), a gear (9) meshed with the corresponding rack (4) is fixedly sleeved on each rotating shaft (3), a large chain wheel (8) is fixedly sleeved on each rotating shaft (3), two cavities (12) are formed in the base (1), moving plates (11) are slidably arranged in the two cavities (12), the tops of the two moving plates (11) extend to the upper side of the base (1), one sides, close to each other, of the two moving plates (11) are respectively provided with a rectangular plate (17), one side, far away from each other, of the two rectangular plates (17) is fixedly provided with a plurality of springs (18), one end, far away from the corresponding rectangular plate (17), of each spring (18) is fixedly connected with one side, close to the rectangular plate (17), of the moving plate (11), two one side that rectangular plate (17) kept away from each other all is fixed to bond has rubber sleeve (16), and one side that two rubber sleeves (16) kept away from each other all is close to one side fixed connection of rectangular plate (17) with movable plate (11) that correspond respectively, and spring (18) are located corresponding rubber sleeve (16), two equal rotation installs round bar (14) on the one side inner wall that cavity (12) kept away from each other, and the one end that two round bar (14) kept away from each other all extends to the outside of base (1) and fixed cover is equipped with little sprocket (15), and the transmission is connected with same chain (10) on little sprocket (15) and corresponding big sprocket (8), and the equal fixed mounting in one side that two movable plates (11) kept away from each other has screw rod (13) with round bar (14) screw thread suit that corresponds, and the screw thread of two screw rods (13) revolves to opposite.

2. A300 t hydraulic clamp according to claim 1, characterized in that the top of the top plate (7) is provided with a mounting hole, and the inner wall of the mounting hole is fixedly connected with the outer side of the hydraulic cylinder (6).

3. A300 t hydraulic clamp according to claim 1, characterized in that the side of the two L-shaped bars (5) adjacent to each other is in movable contact with the inner wall of the side of the two square holes (19) adjacent to each other.

4. A300 t hydraulic clamp according to claim 1, characterized in that the sides of the two transverse plates (20) which are far away from each other are provided with first circular grooves, first bearings are fixedly arranged in the first circular grooves, and inner rings of the first bearings are fixedly sleeved with the outer sides of the corresponding rotating shafts (3).

5. The 300T hydraulic clamp according to claim 1, wherein T-shaped sliding rails are fixedly mounted on the inner walls of the bottoms of the two cavities (12), and T-shaped sliding grooves in sliding fit with the corresponding T-shaped sliding rails are formed in the bottom of the moving plate (11).

6. A300 t hydraulic clamp according to claim 1, characterized in that two guide rods are fixedly arranged on the sides of the two rectangular plates (17) far away from each other, and guide grooves in sliding fit with the corresponding guide rods are formed on the sides of the two moving plates (11) close to each other.

7. The 300t hydraulic clamp according to claim 1, wherein a second circular groove is formed in each of two side inner walls of the cavities (12) away from each other, a second bearing is fixedly installed in each second circular groove, an inner ring of each second bearing is fixedly sleeved with an outer side of the corresponding circular rod (14), circular through holes are formed in each of two side inner walls of the second circular grooves away from each other, inner walls of the circular through holes are movably contacted with outer sides of the corresponding circular rods (14), rectangular through holes are formed in an inner wall of the top of each cavity (12), and front side inner walls and rear side inner walls of the rectangular through holes are respectively in sliding contact with one side of the movable plate (11) corresponding to each through hole.

8. A300 t hydraulic clamp according to claim 1, characterized in that the ends of the two round rods (14) close to each other are provided with thread grooves which are in thread fit with the corresponding screw rods (13).