CN210210234U

CN210210234U - Quick extraction element of coal-winning machine bearing

Info

Publication number: CN210210234U
Application number: CN201920994321.6U
Authority: CN
Inventors: Fawu Zhang; 张法武; Maobo Liang; 梁茂波; Yongxin Qian; 钱永新; Qingyun Chen; 陈庆云
Original assignee: Shandong Xuchang Coal Mine Co Ltd
Current assignee: Shandong Xuchang Coal Mine Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-31
Anticipated expiration: 2029-06-28

Abstract

A quick extraction device for bearings of a coal mining machine belongs to the technical field of coal mining machines. The method is characterized in that: the device comprises a supporting disc (1), a grabbing mechanism, a screw rod (4), a connecting device and a throwing hammer (10), wherein the grabbing mechanism and the supporting disc (1) are sequentially installed at one end of the screw rod (4) from inside to outside, one end of the grabbing mechanism can wrap the supporting disc (1) on the inner side of the grabbing mechanism after rotating, the other end of the screw rod (4) is connected with the throwing hammer (10) through the connecting device, and the throwing hammer (10) is slidably sleeved at one end of the connecting device. The utility model discloses avoided dismantling coal-winning machine bearing in-process, because of can't find suitable stress point and can not effectually take out the emergence of problem fast with the bearing, also saved a large amount of manpowers simultaneously, reduced the time that the accident influences production, reduced intensity of labour, improved labor efficiency, reduced the emergence of mechanical accident.

Description

Quick extraction element of coal-winning machine bearing

Technical Field

A quick extraction device for bearings of a coal mining machine belongs to the technical field of coal mining machines.

Background

The problem that the bearing is difficult to replace is solved in the process of daily overhaul or ground overhaul of the underground coal mining machine. If the old bearing cannot be taken out smoothly, the new bearing cannot be replaced. Therefore, a large amount of labor time is wasted, a large amount of labor force is occupied, and the labor efficiency is reduced. The large number of people salvage one device for a long time, hidden dangers are brought to the safety of workers, and unexpected loss is caused. Most of the original bearing extracting devices utilize the three-jaw drawing device to extract the bearing, however, the jaw stress point cannot be found when most of the bearings on the coal mining machine are replaced, and the significance of extracting the bearing by the original three-jaw drawing device is lost.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the defects of the prior art are overcome, and the bearing quick extraction device of the coal mining machine, which is convenient to replace, improves the labor efficiency and is convenient for the bearing extraction, is provided.

The utility model provides a technical scheme that its technical problem adopted is: this quick extraction element of coal-winning machine bearing, its characterized in that: the grabbing mechanism and the supporting disc are sequentially installed at one end of the screw rod from inside to outside, the supporting disc can be wrapped inside the grabbing mechanism after one end of the grabbing mechanism rotates, the other end of the screw rod is connected with the throwing hammer through the connecting device, and the throwing hammer is slidably sleeved at one end of the connecting device.

The utility model abandons the prior bearing extraction mode, adopts the matching of the supporting disc and the grabbing mechanism to clamp the bearing, utilizes the throwing hammer which is sleeved on the connecting device in a sliding way to provide power, and finally transmits the power to the supporting disc through the matching of the connecting device and the lead screw until the bearing is taken out; the mode avoids the problem that the bearing cannot be effectively and quickly taken out due to the fact that a proper stress point cannot be found in the process of disassembling the bearing of the coal mining machine, saves a large amount of manpower, reduces the time of production influenced by accidents, reduces the labor intensity, improves the labor efficiency, reduces the occurrence of mechanical accidents, increases the benefits of enterprises, and creates good conditions for mine safe production, civilized production and quality standard reaching.

Snatch the mechanism and include supporting leg and mounting disc, mounting disc screw suit is on the lead screw, at least two sets of supporting legs of mounting disc outer lane equipartition, the supporting leg passes through supporting leg connecting bolt and rotates and install on the mounting disc.

The outer end part of the supporting leg is provided with a bulge which is bent outwards.

The supporting leg divide into two parts, the inside part that is close to connecting bolt is the slope setting, and the outside part is vertical setting.

The connecting device comprises a lengthened nut and a throwing hammer rod, one end of the throwing hammer rod is in threaded connection with one end of the lengthened nut, the other end of the throwing hammer rod is sleeved with a throwing hammer, a throwing hammer stop block is arranged at the end part of the throwing hammer rod, and the other end of the lengthened nut is sleeved on the screw rod in a threaded manner.

The screw rods on one side of two end faces of the supporting disk are respectively provided with an inner limiting bolt and an outer limiting bolt of bolt threads, and a gap allowing the supporting disk to slide is reserved between the inner limiting bolt and the outer limiting bolt; the inner hole of the supporting disc is larger than the outer diameter of the screw rod and smaller than the outer diameters of the inner limiting bolt and the outer limiting bolt.

At least two hammer throwing holes are symmetrically arranged at the outer end part of the hammer throwing.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

Drawings

Fig. 1 is a schematic structural diagram of a bearing rapid extraction device of a coal mining machine.

Fig. 2 is a schematic view of the connection relationship between the flail bar and the flail hammer.

The device comprises a support disc 1, a support disc 2, a support leg 201, a protrusion 3, a mounting disc 4, a screw rod 5, a lengthened nut 6, a support leg connecting bolt 7, an inner limiting bolt 8, an outer limiting bolt 9, a hammer throwing rod 10, a hammer throwing 1001, a hammer throwing hole 11 and a hammer throwing stop block.

Detailed Description

Fig. 1 to 2 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 2.

Referring to the attached figures 1-2: the utility model provides a quick extraction element of coal-winning machine bearing, includes support disc 1, snatchs mechanism, lead screw 4, connecting device and gets rid of hammer 10, 4 one ends of lead screw from inside to outside installs in proper order and snatchs mechanism and support disc 1, snatchs a mechanism tip and can wrap up support disc 1 in its inboard after rotating, and the lead screw 4 other end is connected through connecting device and is got rid of hammer 10, gets rid of hammer 10 slip suit in connecting device one end.

Snatch the mechanism and include supporting leg 2 and mounting disc 3, 3 threaded suit of mounting disc are on lead screw 4, and 3 at least two sets of supporting legs 2 of 3 outer lane equipartitions of mounting disc, supporting leg 2 rotate through supporting leg connecting bolt 6 and install on mounting disc 3. The outer end of the supporting leg 2 is provided with a bulge 201 which is bent outwards. The support leg 2 is divided into two parts, the inner part close to the support leg connecting bolt 6 is obliquely arranged, and the outer part is vertically arranged.

The connecting device comprises a lengthened nut 5 and a throwing hammer rod 9, one end of the throwing hammer rod 9 is in threaded connection with one end of the lengthened nut 5, the other end of the throwing hammer rod 9 is sleeved with a throwing hammer 10, a throwing hammer stop block 11 is arranged at the end part of the throwing hammer rod 9, and the other end of the lengthened nut 5 is in threaded sleeved connection with the screw rod 4.

The screw rods 4 on one side of two end faces of the supporting disc 1 are respectively provided with an inner limiting bolt 7 and an outer limiting bolt 8 which are in threaded connection, and a gap allowing the supporting disc 1 to slide is reserved between the inner limiting bolt 7 and the outer limiting bolt 8; the inner hole of the supporting disc 1 is larger than the outer diameter of the screw rod 4 and smaller than the outer diameters of the inner limiting bolt 7 and the outer limiting bolt 8. At least two hammer throwing holes 1001 are symmetrically arranged at the outer end of the hammer throwing 10.

The working principle and the working process are as follows: when the bearing of the coal mining machine is replaced, firstly, the bearing end cover of the bearing of the coal mining machine which needs to be replaced is detached, the supporting legs 2 are rotated, so that the supporting discs 1 are wrapped by the plurality of supporting legs 2, then the supporting disc 1 and the supporting legs 2 are placed in the inner ring of the bearing, the mounting disc 3 or the screw rod 4 is rotated, the relative position relation between the mounting disc 3 and the screw rod 4 is adjusted, the fixed position of the supporting disc 1 among the supporting legs 2 is indirectly adjusted, the supporting disc 1 is tightly pushed until the supporting legs 2 cannot be expanded, and particularly the supporting disc 1 is pushed to the vertically arranged part outside the supporting legs 2, the supporting legs are firmly and tightly pushed inside the bearing through the supporting disc 1, so that the supporting legs 2 and the end face of the bearing chamber are effectively combined together and evenly stressed, and the hammer throwing rod 9 and the hammer throwing 10 are connected with the screw rod 4 through the lengthening nut 5 after being installed. An operator respectively grasps two throwing hammer holes 1001 on a throwing hammer 10 by two hands, and throws the throwing hammer 10 forcibly to enable the throwing hammer to slide along the direction part of a throwing hammer stop block 11 on one side of the throwing hammer rod 9 from the throwing hammer rod 9, the throwing hammer 10 impacts the throwing hammer stop block 11 on one side of the throwing hammer rod 9, the throwing hammer rod 9 and the throwing hammer stop block 11 are stressed, force is transmitted to an extended nut 5 through the throwing hammer rod 9 and then transmitted to a screw rod 4, then the screw rod 4 transmits the force to a support disc 1, finally the support disc 1 drives a plurality of support legs 2 to act on a bearing together, the bearing is enabled to move outwards, finally the purpose of taking out the bearing of a coal mining machine is achieved, the whole process of bearing extraction is completed, and the purpose of rapidly extracting the bearing is achieved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a quick extraction element of coal-winning machine bearing which characterized in that: the device comprises a supporting disc (1), a grabbing mechanism, a screw rod (4), a connecting device and a throwing hammer (10), wherein the grabbing mechanism and the supporting disc (1) are sequentially installed at one end of the screw rod (4) from inside to outside, one end of the grabbing mechanism can wrap the supporting disc (1) on the inner side of the grabbing mechanism after rotating, the other end of the screw rod (4) is connected with the throwing hammer (10) through the connecting device, and the throwing hammer (10) is slidably sleeved at one end of the connecting device.

2. The bearing rapid extraction device of the coal mining machine as claimed in claim 1, wherein: snatch mechanism include supporting leg (2) and mounting disc (3), mounting disc (3) screw thread suit is on lead screw (4), at least two sets of supporting leg (2) of mounting disc (3) outer lane equipartition, supporting leg (2) are installed on mounting disc (3) through supporting leg connecting bolt (6) rotation.

3. The bearing rapid extraction device of the coal mining machine as claimed in claim 2, wherein: the outer end part of the supporting leg (2) is provided with a bulge (201) which is bent outwards.

4. The bearing rapid extraction device of the coal mining machine as claimed in claim 2, wherein: the supporting leg (2) is divided into two parts, the inner side part close to the connecting bolt (6) of the supporting leg is obliquely arranged, and the outer side part is vertically arranged.

5. The bearing rapid extraction device of the coal mining machine as claimed in claim 1, wherein: the connecting device comprises a lengthened nut (5) and a throwing hammer rod (9), one end of the throwing hammer rod (9) is in threaded connection with one end of the lengthened nut (5), the other end of the throwing hammer rod (9) is sleeved with a throwing hammer (10), a throwing hammer stop block (11) is arranged at the end part of the throwing hammer rod (9), and the other end of the lengthened nut (5) is in threaded sleeved connection with a screw rod (4).

6. The bearing rapid extraction device of the coal mining machine as claimed in claim 1, wherein: the screw rods (4) on one side of two end faces of the supporting disc (1) are respectively provided with an inner limiting bolt (7) and an outer limiting bolt (8) which are in threaded connection, and a gap allowing the supporting disc (1) to slide is reserved between the inner limiting bolt (7) and the outer limiting bolt (8); the inner hole of the supporting disc (1) is larger than the outer diameter of the screw rod (4) and smaller than the outer diameters of the inner limiting bolt (7) and the outer limiting bolt (8).

7. The bearing rapid extraction device of the coal mining machine as claimed in claim 1, wherein: at least two hammer throwing holes (1001) are symmetrically arranged at the outer end of the hammer throwing (10).