CN216137871U

CN216137871U - Small stretcher jaw clamping mechanism

Info

Publication number: CN216137871U
Application number: CN202121610596.9U
Authority: CN
Inventors: 常瑜; 张超; 汪恩辉; 刘杰; 刘磊
Original assignee: China National Heavy Machinery Research Institute Co Ltd
Current assignee: China National Heavy Machinery Research Institute Co Ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-03-29
Anticipated expiration: 2031-07-15

Abstract

The utility model provides a jaw clamping mechanism of a small stretcher, which comprises: the device comprises a frame, two clamping blocks, a push rod and an oil cylinder; the front end of the rack is provided with a pair of sliding chutes, and the front ends of the two sliding chutes are respectively inclined inwards; the back of each clamping block is respectively assembled in one sliding groove in a sliding mode, and the rear end of each clamping block is respectively hinged with a connecting rod; the push rod is directly or indirectly assembled on the rack in a sliding manner, and one end of the push rod is directly or indirectly hinged with the two connecting rods respectively; the oil cylinder is directly or indirectly fixed on the rack, and one end of the oil cylinder is directly or indirectly connected with the rear end of the push rod. The jaw clamping mechanism of the small stretcher is simple and reliable in structure, easy to implement, complete in function and cost-saving.

Description

Small stretcher jaw clamping mechanism

Technical Field

The utility model belongs to the field of metallurgical equipment, and particularly relates to a jaw clamping mechanism of a small stretcher.

Background

In the metallurgical field, a jaw clamping mechanism is a core part of a stretcher, a clamping mechanism and a release mechanism of a jaw of a medium-large stretcher are separated, the structure is complex, and for a small stretcher, if the clamping mechanism and the release mechanism are separately arranged, the volumes of the clamping mechanism and the release mechanism need to be reduced, so that the structural strength of the stretcher is weakened, the tensile strength is reduced, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The present invention proposes a small stretcher jaw clamping mechanism to overcome the above problems or to at least partially solve or alleviate them.

Therefore, the utility model provides a jaw clamping mechanism of a small stretcher, which comprises:

the front end of the frame is provided with a pair of sliding chutes, and the front ends of the two sliding chutes are respectively inclined inwards;

the back of each clamping block is respectively assembled in one sliding groove in a sliding mode, and the rear end of each clamping block is respectively hinged with a connecting rod;

the push rod is directly or indirectly assembled on the rack in a sliding mode, and one end of the push rod is directly or indirectly hinged with the two connecting rods;

the oil cylinder is directly or indirectly fixed on the rack, and one end of the oil cylinder is directly or indirectly connected with the rear end of the push rod.

The jaw clamping mechanism of the mini-stretcher of the present invention also has the following optional features.

Optionally, the push rod further comprises a U-shaped part, the middle part of the U-shaped part is connected with the front end of the push rod, and two ends of the U-shaped part are respectively hinged with the other end of one connecting rod.

Optionally, a through hole is formed in the middle of the U-shaped part, a nut is connected to the front end of the push rod after penetrating through the through hole, and a gasket is arranged between the nut and the U-shaped part.

Optionally, a sliding sleeve is arranged on the frame, and the push rod is in sliding fit with the sliding sleeve.

Optionally, a buffer is further connected between the oil cylinder and the push rod.

The jaw clamping mechanism of the small-sized stretcher only uses one oil cylinder to clamp and loosen the clamping block, and has the advantages of simple and reliable structure, easy implementation, complete functions and cost saving.

Drawings

Fig. 1 is a schematic structural view of a jaw clamping mechanism of a small stretcher according to the utility model.

In the above figures: 1. a workpiece; 2. a chute; 3. a clamping block; 4. a connecting rod; 5. a nut; 6. a gasket; 7. a U-shaped member; 8. a push rod; 9. a frame; 10. a sliding sleeve; 11. a bolt; 12. a buffer; 13. and an oil cylinder.

Detailed Description

Example 1

Referring to fig. 1, an embodiment of the present invention provides a jaw clamping mechanism of a small stretcher, comprising: the device comprises a frame 9, two clamping blocks 3, a push rod 8 and an oil cylinder 13; the front end of the frame 9 is provided with a pair of sliding chutes 2, and the front ends of the two sliding chutes 2 are respectively inclined inwards; the back of each clamping block 3 is respectively assembled in one sliding groove 2 in a sliding manner, and the rear end of each clamping block 3 is respectively hinged with a connecting rod 4; the push rod 8 is directly or indirectly assembled on the rack 9 in a sliding manner, and one end of the push rod 8 is directly or indirectly hinged with the two connecting rods 4 respectively; the oil cylinder 13 is directly or indirectly fixed on the frame 9, and one end of the oil cylinder 13 is directly or indirectly connected with the rear end of the push rod 8.

The sliding chutes 2 belong to one part of a frame 9, are arranged up and down symmetrically and are fixed; the front ends of the two connecting rods 4 are respectively hinged with the two clamping blocks 3; the rear ends of the two connecting rods 4 are respectively connected with the push rod 8 through direct or indirect hinges, the push rod 8 can move linearly relative to the rack 9, one end of the push rod 8 is connected with the oil cylinder 13, when a piston rod of the oil cylinder 13 extends out, the push rod 8 moves forwards, under the articulated constraint, the two connecting rods 4 push the two clamping blocks 3 to move to the clamping position A along the two sliding chutes 2, the workpiece 1 is clamped by the two clamping blocks 3, when the piston rod of the oil cylinder 13 retracts, the push rod 8 moves backwards, under the articulated constraint, the two connecting rods 4 drag the two clamping blocks 3 to move to the position B along the sliding chutes 2, the two clamping blocks 3 are separated, and the workpiece 1 can be taken out.

Example 2

Referring to fig. 1, on the basis of embodiment 1, the connecting rod further includes a U-shaped member 7, a middle portion of the U-shaped member 7 is connected to a front end of the push rod 8, and two ends of the U-shaped member 7 are respectively hinged to the other end of one of the connecting rods 4.

The two ends of the U-shaped part 7 are opened, and the end parts of the two ends are hinged with one connecting rod 4 respectively, so that the opening range of the two connecting rods 4 can be increased.

Example 3

Referring to fig. 1, on the basis of embodiment 2, a through hole is formed in the middle of the U-shaped member 7, a nut 5 is connected to the front end of the push rod 8 after passing through the through hole, and a washer 6 is arranged between the nut 5 and the U-shaped member 7.

The front end of the push rod 8 is provided with a threaded part, and after the front end of the push rod 8 penetrates through a through hole in the U-shaped part 7, the U-shaped part 7 is sleeved with the gasket 6 and then fixed by the connecting nut 5, so that the U-shaped part 7 and the push rod 8 are connected together.

Example 4

Referring to fig. 1, on the basis of embodiment 1, a sliding sleeve 10 is disposed on the frame 9, and the push rod 8 is in sliding fit with the sliding sleeve 10.

The frame 9 is provided with a mounting hole, the sliding sleeve 10 is mounted in the mounting hole and connected to the frame 9 through a flange matching bolt 11 at one end of the sliding sleeve, and the sliding sleeve 10 is in sliding fit with the shaft hole of the push rod 8.

Example 5

Referring to fig. 1, on the basis of embodiment 1, a buffer 12 is further connected between the oil cylinder 13 and the push rod 8.

A buffer 12 is arranged between the push rod 8 and the oil cylinder 13, when the oil cylinder 13 drives the push rod 8, the connecting rod 4 and the two clamping blocks 3 to clamp a workpiece 1, the whole mechanism can play a role in buffer protection for the mechanism if the workpiece 1 is broken when the whole mechanism is stretched.

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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims

1. A small stretcher jaw clamping mechanism is characterized by comprising:

the front end of the rack (9) is provided with a pair of sliding chutes (2), and the front ends of the two sliding chutes (2) are respectively inclined inwards;

the back of each clamping block (3) is respectively assembled in one sliding groove (2) in a sliding mode, and the rear end of each clamping block (3) is respectively hinged with a connecting rod (4);

the push rod (8), the said push rod (8) is assembled on the said framework (9) directly or indirectly slidably, one end of the said push rod (8) is connected with two said tie rods (4) directly or indirectly articularly separately;

the oil cylinder (13), the oil cylinder (13) is directly or indirectly fixed on the frame (9), and one end of the oil cylinder (13) is directly or indirectly connected with the rear end of the push rod (8).

2. The jaw clamping mechanism of the small stretching machine is characterized by further comprising a U-shaped part (7), the middle part of the U-shaped part (7) is connected with the front end of the push rod (8), and two ends of the U-shaped part (7) are respectively hinged with the other end of one connecting rod (4).

3. The jaw clamping mechanism of the small stretching machine is characterized in that a through hole is formed in the middle of the U-shaped part (7), a nut (5) is connected to the front end of the push rod after the front end of the push rod penetrates through the through hole, and a gasket (6) is arranged between the nut (5) and the U-shaped part (7).

4. The jaw clamping mechanism of the small stretcher according to claim 1, wherein a sliding sleeve (10) is arranged on the frame (9), and the push rod (8) is in sliding fit with the sliding sleeve (10).

5. The jaw clamping mechanism of the small stretching machine as claimed in claim 1, characterized in that a buffer (12) is connected between the oil cylinder (13) and the push rod (8).