CN219188664U

CN219188664U - Four-jaw chuck for machining coal cutter workpiece

Info

Publication number: CN219188664U
Application number: CN202320204737.XU
Authority: CN
Inventors: 孙连红; 李玉岐; 孙宇
Original assignee: Tianjin Yuze Ship Maintenance Co ltd
Current assignee: Tianjin Yuze Ship Maintenance Co ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-06-16
Anticipated expiration: 2033-02-14

Abstract

The utility model discloses a four-jaw chuck for processing a workpiece of a coal mining machine, which belongs to the technical field of coal mining machine processing equipment and aims at the problem that worn jaws are inconvenient to replace, and the four-jaw chuck comprises a disk body, four groups of jaws which are arranged on the disk body in a surrounding sliding manner and contact blocks which are arranged at one end of the jaws, which faces towards the center of the disk body, of the jaws, a slot which is in an isosceles trapezoid shape is formed at one end of the jaws, which faces the contact blocks, an inserting strip fixedly connected with the contact blocks is arranged in the slot in a sliding manner, a movable groove is formed in the inner side wall of the slot, a self-fixing part is arranged in the movable groove, a penetrating and shrinking groove communicated with the movable groove is vertically formed at the top of the jaws, and an unlocking part is arranged in the penetrating and shrinking groove; according to the utility model, through the arrangement of the slot and the cutting, when the contact block is worn in long-term use, an operator only needs to slide the contact block upwards to withdraw the cutting from the inner side of the slot, so that the replacement of the contact block can be realized independently, and the claw and the contact block are not required to be detached and replaced integrally by manpower, thereby saving time and labor and saving cost.

Description

Four-jaw chuck for machining coal cutter workpiece

Technical Field

The utility model belongs to the technical field of coal cutter processing equipment, and particularly relates to a four-jaw chuck for processing a coal cutter workpiece.

Background

In the process of preparing and processing the coal mining machine, a workpiece is often required to be processed, in the process of processing, a chuck is required to be used for fixing the workpiece, the common chuck is a three-jaw chuck, the three-jaw chuck is used for fixing the workpiece by grasping the outer edge of the workpiece, the three-jaw chuck is difficult to grasp a large-scale workpiece on the coal mining machine, and the four-jaw chuck is required to be used for fixing the inner edge of the workpiece.

In the prior art, although the four-jaw chuck can ensure the firmness of a workpiece when the workpiece is processed, from practical point of view, the contact surface of the jaws of the chuck and the workpiece is easily worn due to long-term stress and pressure, so that the clamping force is insufficient, and the use cost of equipment is increased when the whole jaws are replaced.

Therefore, there is a need for a four jaw chuck for machining a shearer workpiece that solves the problem in the prior art that worn jaws are inconvenient to replace.

Disclosure of Invention

The utility model aims to provide a four-jaw chuck for machining a workpiece of a coal mining machine, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a four-jaw chuck for processing coal-winning machine work piece, including disk body, four sets of encircle the slip set up in jack catch on the disk body and set up in the jack catch orientation the contact block of disk body center one end, the jack catch just is just to the slot that is isosceles trapezoid is seted up to the one end of contact block, slide in the slot be provided with the cutting of contact block looks rigid coupling, the movable groove has been seted up on the inside wall of slot, be provided with from fixed part in the movable groove, wear to shrink the groove with the top of jack catch is vertically seted up and is linked together in the movable groove, wear to shrink the inslot and be provided with unlocking part.

In the scheme, the self-fixing part comprises a locking block arranged in the movable groove in a sliding manner and a locking groove arranged on the cutting, one end of the locking block penetrates into the locking groove, and a reset spring is fixedly connected between the other end of the locking block and the innermost inner wall of the movable groove.

It is further worth to say that one end of the locking block penetrating into the inner side of the locking groove is in an inclined plane shape, and the inclined plane is upwards distributed.

It is still further to be noted that, the unblock part include vertical slip set up in wear to contract the depression bar in the inslot with set up in the pressurized tank in the latch segment inner wall, the one end of depression bar penetrates in the pressurized tank and be fixed with the extrusion piece, the other end of depression bar wears out the jack catch and is fixed with the briquetting.

As a preferable implementation mode, the longitudinal sections of the compression groove and the extrusion block are in right-angle trapezoid shapes, and the inclined side of the extrusion block is attached to the inclined inner wall of the compression groove.

As a preferred implementation mode, the compression bar is positioned on the bar body in the penetrating and shrinking groove and is fixedly sleeved with a movable ring, a compression spring is arranged below the movable ring, the compression spring is slidably sleeved on the bar body of the movable ring, the outer wall of the compression spring is fixedly connected with the inner wall of the movable groove, and a fixed ring is sleeved on the bar body, which is positioned between the movable ring and the compression spring, of the compression bar.

Compared with the prior art, the four-jaw chuck for machining the workpiece of the coal mining machine provided by the utility model at least comprises the following beneficial effects:

(1) Through the setting of slot and cutting, when the contact block long-term use wearing and tearing, the operation personnel only need upwards slide the contact block, withdraws from the slot inboard with the cutting, can realize the change of contact block alone, need not the manual work and tear open claw and contact block whole and trade, both labour saving and time saving, practice thrift the cost again.

(2) Through the setting of self-fixing part, can be at the inboard in-process of inserting the slot of cutting, realize the cutting locking effect voluntarily to this makes things convenient for the installation of contact block on the jack catch under the prerequisite of guaranteeing joint strength between contact block and the jack catch.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall structure of the contact block and the claw in the utility model;

FIG. 3 is a schematic view of the separation structure of the contact block and the claw in the utility model;

FIG. 4 is a schematic view of the internal structure of the claw of the utility model;

fig. 5 is a schematic diagram of the structure of fig. 4 a according to the present utility model.

In the figure: 1. a tray body; 2. a claw; 3. a contact block; 4. cutting; 5. a slot; 6. a locking block; 7. a locking groove; 8. a return spring; 9. extruding a block; 10. a pressure receiving groove; 11. a compression bar; 12. briquetting; 13. a movable ring; 14. a fixing ring; 15. and (5) compressing the spring.

Detailed Description

The utility model is further described below with reference to examples.

Referring to fig. 1-5, the present utility model provides a four-jaw chuck for machining a workpiece of a coal mining machine, which comprises a disk body 1, four groups of jaws 2 arranged on the disk body 1 in a surrounding sliding manner, and a contact block 3 arranged at one end of the jaws 2 towards the center of the disk body 1;

when the workpiece is processed, the workpiece is placed in the center of the disc body 1 in advance, then the two groups of clamping jaws 2 slide towards the circular part of the disc body 1 until the contact blocks 3 are abutted against the workpiece, the contact blocks 3 on the four groups of clamping jaws 2 can be matched with each other, the locking effect on the workpiece is achieved, and the stability of the workpiece during processing is guaranteed.

However, from practical point of view, the contact block 3 is easily worn due to long-term stress and compression, so that the clamping force on the workpiece is insufficient, the clamping jaw 2 and the contact block 3 need to be replaced integrally, however, the replacement of the whole clamping jaw 2 and the whole contact block 3 can cause high equipment use cost;

in view of this, as shown in fig. 2 and 3, it should be noted that a slot 5 in an isosceles trapezoid shape is provided at one end of the claw 2 facing the contact block 3, and an insert 4 fixedly connected with the contact block 3 is slidably provided in the slot 5;

through the setting of slot 5 and cutting 4, when contact block 3 long-term use wearing and tearing, the operation personnel only need upwards slide contact block 3, withdraws from the inboard of slot 5 with cutting 4, can realize the change of contact block 3 alone, need not the manual work and tear open claw 2 and contact block 3 whole and trade, both labour saving and time saving, practice thrift the cost again.

Further, as shown in fig. 4 and 5, it should be noted that a movable slot is formed on the inner side wall of the slot 5, and a self-fixing component for fastening the cutting 4 is disposed in the movable slot;

the self-fixing part comprises a locking block 6 arranged in the movable groove in a sliding manner and a locking groove 7 arranged on the cutting 4, one end of the locking block 6 penetrates into the locking groove 7, and a reset spring 8 is fixedly connected between the other end of the locking block 6 and the innermost inner wall of the movable groove;

one end of the locking block 6 penetrating into the inner side of the locking groove 7 is in an inclined plane shape, and the inclined plane is upwards distributed;

through the setting of self-fixing part, when inserting slot 5 inboard with the cutting 4 contra-rotating, cutting 4 can be contradicted in advance from the inclined plane of latch segment 6 in the fixed part, and then latch segment 6 receives the extrusion to movable inslot shrink and extrude reset spring 8 deformation, treat that cutting 4 inserts in slot 5 completely for when latch segment 7 is in corresponding position with the movable groove, then latch segment 6 can insert the latch segment 7 inboard under reset spring 8 elasticity effect voluntarily, so can lock cutting 4 in slot 5 inboard voluntarily, guarantee the joint strength between contact segment 3 and the jack catch 2, the installation of convenient contact segment 3 on jack catch 2.

Further, as shown in fig. 5, it is worth to be explained that a penetrating and shrinking slot communicated with the movable slot is vertically formed at the top of the claw 2, and an unlocking component is arranged in the penetrating and shrinking slot;

the unlocking component comprises a compression bar 11 vertically arranged in the penetrating and shrinking groove in a sliding manner and a compression groove 10 arranged in the inner wall of the locking block 6, one end of the compression bar 11 penetrates into the compression groove 10 and is fixedly provided with a compression block 9, and the other end of the compression bar 11 penetrates out of the clamping jaw 2 and is fixedly provided with a pressing block 12;

the longitudinal sections of the compression groove 10 and the extrusion block 9 are in right trapezoid shapes, and the inclined side of the extrusion block 9 is attached to the inclined inner wall of the compression groove 10;

through unlocking part's setting, wait that contact block 3 uses serious wearing and tearing for a long time, only need simple and easy pressure briquetting 12 down, make depression bar 11 atress penetrate in the pressurized tank 10 inboard and push down extrusion piece 9 to this extrusion piece 9 is at the in-process of gliding, its hypotenuse sustainable conflict pressurized tank 10 slant inner wall, and then to locking piece 6 formation traction force, control locking piece 6 initiative and withdraw from locking groove 7 inboard, contact the fastening effect to cutting 4 and contact block 3 fast.

Further, as shown in fig. 5, it is worth to be explained that the rod body of the compression rod 11 in the penetrating and shrinking groove is fixedly sleeved with a movable ring 13, a compression spring 15 is arranged below the movable ring 13, the compression spring 15 is slidably sleeved on the rod body of the movable ring 13, the outer wall of the compression spring is fixedly connected with the inner wall of the movable groove, and a fixed ring 14 is sleeved on the rod body of the compression rod 11 between the movable ring 13 and the compression spring 15;

through the setting of expansion ring 13, solid fixed ring 14 and hold-down spring 15, at the briquetting 12 of pushing down, the in-process of making depression bar 11 move down and penetrating the pressurized tank 10 inboard, depression bar 11 can take expansion ring 13 to move down and compress hold-down spring 15 deformation in step to this utilizes the resilience force of hold-down spring 15, can be after the manual release pushes down briquetting 12, the automatic pole 11 that steps up, convenient secondary use.

To sum up: through the setting of slot 5 and cutting 4, can realize the change of contact block 3 alone, need not the manual work and tear jaw 2 and the whole dismantlement of contact block 3 trade, both labour saving and time saving, the cost is practiced thrift again, through the setting of self-fixing part, can insert the inboard in-process of slot 5 at cutting 4, automatic realization cutting 4 locking effect, with this under the prerequisite of guaranteeing joint strength between contact block 3 and the jaw 2, make things convenient for the installation of contact block 3 on jaw 2, through the setting of unblock part, only need simple and easy briquetting 12 down, can form the traction force to latch segment 6, control latch segment 6 initiative and withdraw from the locking groove 7 inboard, the contact is to the fastening effect of cutting 4 and contact block 3 fast.

Claims

1. The utility model provides a four-jaw chuck for processing coal-winning machine work piece, including disk body (1), four encircle the slip set up in jack catch (2) on disk body (1) and set up in jack catch (2) orientation contact block (3) of disk body (1) center one end, a serial communication port, jack catch (2) just set up slot (5) that are isosceles trapezoid to the one end of contact block (3), be provided with in slot (5) in the slip with insert strip (4) of contact block (3) looks rigid coupling, the movable groove has been seted up on the inside wall of slot (5), be provided with self-fixturing part in the movable groove, wear to shrink the inslot with wear to shrink the groove that the top of jack catch (2) is vertically seted up with movable groove is linked together, wear to shrink inslot and be provided with unlocking part.

2. A four jaw chuck for processing a shearer workpiece as set forth in claim 1, wherein: the self-fixing part comprises a locking block (6) and a locking groove (7), wherein the locking block (6) is arranged in the movable groove in a sliding mode, the locking groove (7) is formed in the cutting (4), one end of the locking block (6) penetrates into the locking groove (7), and a reset spring (8) is fixedly connected between the other end of the locking block (6) and the inner wall of the innermost side of the movable groove.

3. A four jaw chuck for processing a shearer workpiece as set forth in claim 2, wherein: one end of the locking block (6) penetrating into the inner side of the locking groove (7) is in an inclined plane shape, and the inclined plane is upwards distributed.

4. A four jaw chuck for processing a shearer workpiece as set forth in claim 2, wherein: the unlocking component comprises a pressing rod (11) vertically arranged in the penetrating groove in a sliding mode and a pressure receiving groove (10) formed in the inner wall of the locking block (6), one end of the pressing rod (11) penetrates into the pressure receiving groove (10) and is fixedly provided with an extrusion block (9), and the other end of the pressing rod (11) penetrates out of the clamping jaw (2) and is fixedly provided with a pressing block (12).

5. A four jaw chuck for use in machining a shearer workpiece as in claim 4, wherein: the longitudinal sections of the compression groove (10) and the extrusion block (9) are in right-angle trapezoid shapes, and the inclined edges of the extrusion block (9) are attached to the inclined inner walls of the compression groove (10).

6. A four jaw chuck for processing a shearer workpiece as described in claim 5, wherein: the compression rod (11) is positioned on the rod body in the penetrating and shrinking groove, the movable ring (13) is fixedly sleeved with the compression ring (13), the compression spring (15) is arranged below the movable ring (13), the compression spring (15) is slidably sleeved on the rod body of the movable ring (13), the outer wall of the compression rod is fixedly connected with the inner wall of the movable groove, and the compression rod (11) is positioned on the rod body between the movable ring (13) and the compression spring (15), and the fixed ring (14) is sleeved on the rod body.