CN220179231U - Device for pulling out expansion spring sleeve of rocker arm hinge pin of coal mining machine - Google Patents

Abstract

The utility model discloses a device for pulling out a tension spring sleeve of a rocker arm hinge pin of a coal mining machine, which is used for detaching the tension spring sleeve from the hinge pin, and comprises the following components: jackscrews, baffles and rams. The jackscrew stretches into and is connected with the tension spring sleeve, and the hinge pin is tightly propped against the jackscrew; the baffle is of a plate-shaped structure and is used for being connected with the jackscrews, a first through hole used for being connected with the jackscrews is formed in the baffle, and a penetrating second threaded hole is formed in the center of the baffle; the impact force when the ram is used for providing dismantling for the tension spring sleeve is located the baffle and is kept away from the side of tension spring sleeve, and the ram includes: the central pulling rod is of a cylindrical rod-shaped structure; the connecting bolt is arranged at one end of the central pulling rod and is used for being matched with the second threaded hole to be in threaded connection with the baffle; the hammer body is movably arranged on the central pulling rod; the end baffle is arranged at one end of the center pulling rod, which is away from the connecting bolt, and is used for blocking the hammer body from moving out of the center pulling rod. By adopting the arrangement mode, the problem that the tension spring sleeve of the rocker arm hinge pin of the coal mining machine is difficult to detach can be solved.

Description

Device for pulling out expansion spring sleeve of rocker arm hinge pin of coal mining machine

Technical Field

The utility model relates to the technical field of machine manufacturing, in particular to a device for pulling out a tension spring sleeve of a rocker arm hinge pin of a coal mining machine.

Background

At present, when the fully-mechanized coal mining working face is removed, the rocker arm of the coal mining machine needs to be removed, and the coal mining machine can transport a lifting well. When the rocker arm of the coal mining machine is removed, the tension spring sleeve of the hinge pin is difficult to pull out, so that the coal mining machine removing efficiency is severely limited.

In the prior art, the jackscrew is used for ejecting the rocker arm hinge pin tension spring sleeve, but the method is frequently subjected to the conditions of screw breakage and the like of the jackscrew, so that the dismounting difficulty of the rocker arm hinge pin tension spring sleeve of the coal machine is further increased. If the jackscrew is used and the tension spring sleeve of the rocker arm hinge pin of the coal mining machine cannot be pulled out, the tension spring sleeve is broken by gas cutting operation. However, the underground gas cutting operation has higher potential safety hazard, and the dismantling progress of the coal machine greatly restricts the dismantling speed of the fully-mechanized coal mining working face, so that the development of a new process and a new method for the dismantling operation of the coal machine rocker arm hinge pin expansion spring sleeve is urgent.

Therefore, how to quickly and effectively disassemble the tension spring sleeve of the rocker arm hinge pin of the coal mining machine is a technical problem which needs to be solved by the person skilled in the art at present.

Disclosure of Invention

The utility model aims to provide a device for pulling out a tension spring sleeve of a rocker arm hinge pin of a coal mining machine, which can solve the problem that the tension spring sleeve of the rocker arm hinge pin of the coal mining machine is not easy to detach.

In order to achieve the above object, the present utility model provides a device for extracting a tension spring sleeve of a rocker arm hinge pin of a coal mining machine, for removing the tension spring sleeve from the hinge pin, comprising:

the jackscrew stretches into the tension spring sleeve and is tightly propped against the hinge pin;

the baffle is provided with a first through hole for connecting the jackscrew, and the center of the baffle is provided with a second threaded hole which penetrates through the baffle;

the ram is located the baffle and is kept away from one side of spring cover for provide the impact force when demolishing to spring cover, the ram includes:

the central pulling rod is of a cylindrical rod-shaped structure;

the connecting bolt is arranged at one end of the center pulling rod and is used for being matched with the second threaded hole to be in threaded connection with the baffle;

the hammer body is movably arranged on the central pulling rod;

and the tail end baffle is arranged at one end of the central pulling rod, which is away from the connecting bolt, and is used for blocking the hammer body from moving out of the central pulling rod.

Preferably, the hammer body is of a cylindrical structure as a whole, and the axis of the hammer body coincides with the axis of the central pulling rod.

Preferably, the hammer body is symmetrically provided with force application rings in the radial direction for applying power to the hammer body.

Preferably, the end baffle is of a circular plate-like structure, and the axis of the end baffle and the axis of the center pulling rod are positioned on the same straight line.

Preferably, a retainer ring is arranged at the end of the connecting bolt, which is close to the end baffle plate, and is used for limiting the moving distance of the hammer body.

Preferably, gaskets are arranged between the retainer ring and the hammer body and between the hammer body and the tail end baffle.

Preferably, the jackscrew comprises a jackscrew nut and a jackscrew screw rod, and the jackscrew nut is clung to one side of the baffle, which is far away from the tension spring sleeve.

Preferably, the jackscrew is threaded with a nut, and the nut is located on the side of the baffle facing away from the ram.

Preferably, the jackscrews and the first through holes matched with the jackscrews are both arranged in two and symmetrically arranged.

Compared with the background art, the utility model provides the device for pulling out the tension spring sleeve of the rocker arm hinge pin of the coal mining machine, which is used for detaching the tension spring sleeve from the hinge pin, and comprises the following components: jackscrews, baffles and hammers; the jackscrew stretches into and is connected to the tension spring sleeve, and one end of the jackscrew connected with the tension spring sleeve is tightly propped against the hinge pin; the baffle is of a plate-shaped structure and is used for being connected with the jackscrews, a first through hole for being connected with the jackscrews in a threaded mode is formed in the baffle, and a penetrating second threaded hole is formed in the center of the baffle; the impact force when the ram is used for providing dismantling for the tension spring sleeve is located the baffle and is kept away from the side of tension spring sleeve, and the ram includes: the central pulling rod is of a cylindrical rod-shaped structure; the connecting bolt is arranged at one end of the central pulling rod and is used for being matched with the second threaded hole to be in threaded connection with the baffle; the hammer body is movably arranged on the central pulling rod; the end baffle is arranged at one end of the center pulling rod, which is away from the connecting bolt, and is used for blocking the hammer body from moving out of the center pulling rod.

Specifically, the device for pulling out the tension spring sleeve of the rocker arm hinge pin of the coal mining machine mainly comprises two parts, wherein one part is a jackscrew, the other part is a ram, and a baffle plate mainly plays a role in connecting the jackscrew and the ram in the middle; one end of the jackscrew is connected with the baffle through threads, the other end of the jackscrew is connected with the tension spring sleeve and is provided with an extending part which is propped against the hinge pin, the ram part is connected with the baffle through a connecting bolt, the ram body of the ram part can move on the center pulling rod, and the ram body is arranged between the check ring on the center pulling rod and the end baffle.

That is, the jackscrew is connected with the baffle, the other end of the jackscrew is screwed into the tension spring sleeve to tightly prop against the rocker arm hinge pin of the coal mining machine, an outward tightening torque is given to the tension spring sleeve, then the connecting bolt of the ram is screwed into the second threaded hole on the baffle to connect the ram with the baffle, so that the jackscrew, the baffle and the ram are connected into a whole, then the hammer body of the ram part is operated to give an impact force deviating from the tension spring sleeve, when the tension spring sleeve slightly moves, the jackscrew is continuously screwed into until the tension spring sleeve is propped against the hinge pin, and the hammer body is repeatedly operated, so that the tension spring sleeve can be removed by alternate matching.

In conclusion, the problem that the tension spring sleeve of the rocker arm hinge pin of the coal mining machine is difficult to detach can be solved by adopting the arrangement mode.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a coal mining machine rocker arm hinge pin tension sleeve extracting device provided by an embodiment of the utility model;

wherein:

100-expanding spring sleeves;

200-hinge pins;

300-jackscrew, 310-jackscrew nut, 320-jackscrew screw;

400-baffle plate, 410-first through hole, 420-second threaded hole;

500-of a ram, 510-of a central pulling rod, 520-of a connecting bolt, 530-of an end baffle, 540-of a hammer body, 550-of a force application ring and 560-of a retainer ring;

600-washers.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

Referring to fig. 1, the present utility model provides a device for extracting a tension spring sleeve of a rocker arm hinge pin of a coal mining machine, for removing the tension spring sleeve 100 from the hinge pin 200, comprising: a jackscrew 300, a baffle 400, and a ram 500. The jackscrew 300 stretches into and is connected to the tension spring sleeve 100, and the hinge pin 200 is tightly propped against; the baffle 400 is of a plate-shaped structure and is used for being connected with the jackscrew 300, a first through hole used for being connected with the jackscrew 300 is formed in the baffle 400, and a penetrating second threaded hole 420 is formed in the center of the baffle 400; the hammer 500 is used for providing impact force for the tension spring sleeve 100 when being removed, and is arranged on one side of the baffle 400 away from the tension spring sleeve 100, and the hammer 500 comprises: the central pulling rod 510 is of a cylindrical rod-shaped structure; the connecting bolt 520 is arranged at one end of the center pulling rod 510 and is used for being matched with the second threaded hole 420 to be in threaded connection with the baffle 400; the hammer body 540 is movably arranged on the center pulling rod 510; the end stop 530 is disposed at an end of the central shaft 510 facing away from the connecting bolt 520 for blocking removal of the hammer 540 from the central shaft 510.

Specifically, the device for pulling out the tension spring sleeve 100 of the rocker arm hinge pin 200 of the coal mining machine mainly comprises two parts, wherein one part of the jackscrew 300 is provided with the other part of the jackscrew 500, and the baffle 400 mainly plays a role in connecting the jackscrew 300 with the ram 500 in the middle; the top wire 300 has one end screwed to the baffle 400 and the other end connected to the tension spring sleeve 100 and has an extended portion abutting against the hinge pin 200, the ram 500 portion is connected to the baffle 400 by the connecting bolt 520, the ram 540 of the ram 500 portion is movable on the center pin 510, and the ram 540 is installed between the retainer 560 on the center pin 510 and the end baffle 530. In the present embodiment, the connecting bolt 520 of the hammer 500 has a diameter of 30mm, the first through hole has a diameter of 22mm, and the second screw hole 420 has a diameter of 30mm.

It will be appreciated that the ram 540 is disposed between the retainer 560 on the center pin 510 and the end stops 530, and that the ram 540 can move back and forth on the center pin 510; when the hammer 540 is subjected to a force toward the end shield 530, even if the force is not directed toward the end shield 530 along the center pin 510, the hammer 540 can be accelerated toward the end shield 530 along the center pin 510 as long as the hammer 540 is accelerated toward the end shield 530, so that when the hammer 540 moves to the end shield 530, the hammer 540 can provide a great impact force to the end shield 530 due to inertia and in the direction of the center pin 510 due to the stopping moment, and the impact force mainly plays a role of pulling out the tension spring sleeve 100.

So arranged, it is possible to convert forces directed differently into forces that are straight and in the direction of withdrawal of the tension spring sleeve 100; because the constructor can easily generate an error for shifting the pulling-out direction of the tension spring sleeve 100 when directly applying pulling-out force to the tension spring sleeve 100, the tension spring sleeve 100 can be easily damaged; in addition, the effect of directly applying force to the tension spring sleeve 100 is not as great as that of applying the same force to the hammer 540, and the inertial force generated by the hammer 540 after accelerating movement by one force and stopping instantaneously is much greater than that of the original force, so that the manual labor amount can be reduced by the arrangement.

That is, the jackscrew 300 is first connected to the baffle 400, the other end of the jackscrew 300 is screwed into the tension spring sleeve 100 to be tightly supported by the rocker arm hinge pin 200 of the coal mining machine, an outward tightening torque is given to the tension spring sleeve 100, then the connecting bolt 520 of the hammer 500 is screwed into the second threaded hole 420 on the baffle 400 to connect the hammer 500 to the baffle 400, so that the jackscrew 300, the baffle 400 and the hammer 500 are connected into a whole, then the hammer body 540 of the part of the hammer 500 is operated to give an impact force deviating from the tension spring sleeve 100, when the tension spring sleeve 100 has a small movement, the jackscrew 300 is continuously screwed until the hinge pin 200 is tightly supported, and the hammer body 540 is repeatedly operated, so that the tension spring sleeve 100 can be removed by alternate cooperation.

In conclusion, the problem that the tension sleeve 100 of the rocker arm hinge pin 200 of the coal mining machine is not easy to detach can be solved by adopting the arrangement mode.

In some embodiments, the ram 540 is generally cylindrical in configuration, and the axis of the ram 540 coincides with the axis of the center pin 510.

It will be appreciated that the ram 540 is a component of the hammer 500 that applies an impact force to the tension spring case 100, and thus, the ram 540 has a certain weight; the hammer 540 is sleeved on the central pulling rod 510, and can move back and forth on the central pulling rod 510 to provide a rightward impact force to the jackscrew 300, if the whole structure of the hammer 540 is an irregular structure or the whole weight is uneven, then when the hammer 540 hits the end baffle 530, uneven impact force is generated, the impact force is transmitted to the jackscrew 300, the impact forces received by jackscrews 300 at different positions are different, and when the tension spring sleeve 100 is pulled out, the tension spring sleeve 100 is easily damaged due to uneven stress of the tension spring sleeve 100.

Specifically, in this embodiment, two jackscrews 300 are installed on the baffle 400, the ram 500 is installed at the center of the baffle 400, the jackscrews 300 are located at two sides of the ram 500 and symmetrically distributed, an acceleration to move right is given to the ram 540 of the ram 500, and when the ram 540 hits the end baffle 530, a right impact force is generated, because the ram 500 is connected to the middle of the baffle 400, and the jackscrews 300 are symmetrically arranged on the baffle 400, the force transmitted to each jackscrew 300 is the same, and the upper and lower sides of the tension spring sleeve 100 are not easily damaged by the same pulling force.

Of course, the shape of the hammer 540 may be other uniform weight, and the symmetry axis of the hammer may be in the same axis as the center pin 510, which is not particularly limited herein.

In some embodiments, the ram 540 is radially symmetrically provided with a force application ring 550 for applying a motive force to the ram 540.

It can be appreciated that the ram 500 mainly acts on the inertial force generated by the impact of the ram 540 on the end baffle 530 due to the rightward acceleration motion of the ram 540, but the acceleration of the ram 540 requires an initial force, and since the whole structure of the ram 540 is enlarged, it is not easy to directly apply an external force on the ram 540, and therefore, the force application ring 550 is disposed on the ram 540, so as to apply an external force on the ram 540.

In this embodiment, two force application rings 550 are symmetrically disposed on both sides of the cylindrical hammer 540, so that the hammer 540 has a larger acceleration with a smaller force, and the force application process to the hammer 540 is more reasonable.

Of course, other force application grippers may be provided according to practical situations, for example, a rope ring may be provided or holes may be punched in the hammer 540, which is not particularly limited herein, so long as an external force can be conveniently applied to the hammer 540.

In some embodiments, the end baffles 530 are circular plate-like structures, with the axis of the end baffles 530 collinear with the axis of the center pin 510.

In this embodiment, since the end baffle 530 receives a large impact force, in order to increase the service life of the ram 500, the end baffle 530 is preferably in a circular plate-like structure, and the axis of the end baffle 530 is collinear with the axis of the center pin 510. It can be appreciated that when the axis of the end baffle 530 is in the same line as the axis of the center pin 510, the impact force applied to the end baffle 530 is uniformly transmitted to the end baffle 530, so that the end baffle 530 is not easily damaged, thereby improving the service life of the ram 500; the end baffle 530 is provided in a circular plate-like structure for the convenience of processing and manufacturing, since it is not easy to injure a constructor during use.

Of course, the end baffle 530 may be configured in other shapes according to practical situations, and is not particularly limited herein, as long as it can function to block the hammer 540 from flying out of the center pin 510.

In some embodiments, the end of the connecting bolt 520 near the end shield 530 is provided with a retainer ring 560 for limiting the travel distance of the ram 540.

It will be appreciated that the ram 500 will move back and forth over the center pin 510, with the end stop 530 disposed on the far right side of the center pin 510, but if there is no means to block the movement of the ram 540 on the left side, the ram 540 will directly strike the stop 400 beyond the connecting bolt 520, so that the ram 540 will easily damage the threads on the connecting bolt 520 and damage the stop 400, reducing the service life of the ram 500 and the stop 400.

In the present embodiment, a retainer ring 560 is provided at the end of the connecting bolt 520 near the end baffle 530 for limiting the moving distance of the hammer 540; thus, the hammer 540 can only hit the retainer 560 at most when moving leftwards, and other components are not damaged. In addition, in the present embodiment, the retainer ring 560 is provided in a hexagonal bolt head structure, which facilitates the installation of the center pin 510 into the second screw hole 420 of the baffle 400 using a tool.

In some embodiments, washers 600 are disposed between the retainer ring 560 and the ram 540, and between the ram 540 and the end shield 530.

It will be appreciated that the ram 540 moves between the collar 560 and the end shield 530, which generates a large impact force that can cause some damage to the collar 560, the end shield 530, and the ram 540, as well as a large noise.

In this embodiment, the washer 600 is provided between the retainer 560 and the ram 540, and between the ram 540 and the end shield 530 to cushion the impact of the ram 540, thereby reducing damage to the components of the ram 500. Preferably, the plastic gasket 600 is selected in this embodiment, and the plastic gasket 600 has low cost and good buffering effect.

Of course, the number of washers 600 is not particularly limited, as long as the effect of buffering and damping is achieved, and two washers 600 are preferably provided on both sides of the hammer 540 in this embodiment.

In some embodiments, the jackscrew 300 includes a jackscrew cap 310 and a jackscrew screw 320, the jackscrew cap 310 being positioned against the side of the baffle 400 remote from the tension spring sleeve 100.

In this embodiment, the whole top thread 300 is in a bolt structure, the top dead screw is provided with threads, and the top thread screw 320 passes through the first through hole of the baffle 400 toward the direction of the tension spring sleeve 100, wherein the top thread nut 310 is tightly attached to the baffle 400. When the tension spring sleeve 100 is pulled out under the action of the ram 500, the jack screw 320 can act on the jack screw cap 310 through a tool when pulled out a certain distance, so that the jack screw 320 continuously pushes up the hinge pin 200. Specifically, the jackscrew 320 has a diameter of 20mm.

In some embodiments, a nut is threadably attached to the jackscrew 320 on the side of the baffle 400 facing away from the ram 500.

It will be appreciated that in order to make the connection of the jackscrew 300 to the baffle 400 more stable, the impact force generated by the transfer ram 500 is more stable, and a nut is connected to the jackscrew 320 on the side of the baffle 400 facing away from the ram 500, so that the jackscrew 300 is integrally fixed to the baffle 400.

In some embodiments, the jackscrew 300 and the first through hole matched with the jackscrew 300 are both provided with two, and are symmetrically arranged.

It can be appreciated that, in order to prevent the tension spring housing 100 from being damaged due to the difference in the vertical pulling distance when the tension spring housing 100 is pulled out, two jackscrews 300 and first through holes matched with the jackscrews are provided on the baffle 400, and are symmetrically arranged, so that the tension spring housing 100 can be pulled out to the maximum without damaging the tension spring housing 100.

In summary, the utility model provides a device for extracting a tension spring sleeve 100 of a rocker arm hinge pin 200 of a coal mining machine, which is used for detaching the tension spring sleeve 100 from the hinge pin 200, and comprises the following components: a jackscrew 300, a baffle 400, and a ram 500. In use, the jackscrew 300 is inserted through the first through hole, the jackscrew 320 is screwed into the tension spring sleeve 100 and abuts against the hinge pin 200, then the nut arranged on one side of the baffle 400 away from the ram 500 is fastened, the jackscrew 300 and the baffle 400 are connected into a whole, then the connecting bolt 520 of the ram 500 is connected with the second threaded hole 420 on the baffle 400, the weight is operated to apply an outward impact force to the tension spring sleeve 100, and finally the tension spring sleeve 100 is removed through the alternate fastening cooperation of the ram 500 and the jackscrew 300.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (9)

1. A coal mining machine rocker arm hinge pin tension spring sleeve pulling device for removing a tension spring sleeve (100) from a hinge pin (200), comprising:

a jackscrew (300) which extends into the tension spring sleeve (100) and is tightly propped against the hinge pin (200);

a baffle plate (400) provided with a first through hole (410) for connecting the jackscrew (300), wherein a second threaded hole (420) penetrating through is arranged in the center of the baffle plate (400);

a hammer (500) provided on a side of the baffle (400) away from the tension spring housing (100) for providing an impact force to the tension spring housing (100) upon removal, the hammer (500) comprising:

a central pulling rod (510) which is a cylindrical rod-shaped structure;

the connecting bolt (520) is arranged at one end of the center pulling rod (510) and is used for being matched with the second threaded hole (420) to be in threaded connection with the baffle plate (400);

a hammer body (540) movably arranged on the center pulling rod (510);

and the tail end baffle (530) is arranged at one end of the center pulling rod (510) away from the connecting bolt (520) and is used for blocking the hammer body (540) from moving out of the center pulling rod (510).

2. The shearer rocker arm hinge pin tension sleeve extraction device of claim 1, wherein the hammer block (540) is of a cylindrical structure as a whole, and the axis of the hammer block (540) coincides with the axis of the center drawbar (510).

3. The device for pulling out the tension spring sleeve of the rocker arm hinge pin of the coal mining machine according to claim 2, wherein the hammer body (540) is symmetrically provided with a force application circular ring (550) in the radial direction for applying power to the hammer body (540).

4. The shearer rocker arm hinge pin tension sleeve pulling device according to claim 1, wherein the end baffle (530) has a circular plate-like structure, and an axis of the end baffle (530) is positioned on the same line as an axis of the center pulling rod (510).

5. The device for pulling out the tension spring sleeve of the rocker arm hinge pin of the coal mining machine according to claim 1, wherein a retainer ring (560) is arranged at the end of the connecting bolt (520) close to the end baffle (530) for limiting the moving distance of the hammer body (540).

6. The device for extracting the tension spring sleeve of the rocker arm hinge pin of the coal mining machine according to claim 5, wherein gaskets (600) are arranged between the check ring (560) and the hammer body (540) and between the hammer body (540) and the end baffle (530).

7. The shearer rocker arm hinge pin tension sleeve extraction device of claim 1, wherein the jackscrew (300) comprises a jackscrew nut (310) and a jackscrew screw (320), the jackscrew nut (310) being abutted against a side of the baffle (400) remote from the tension sleeve (100).

8. The shearer rocker arm hinge pin tension sleeve extraction device of claim 7, wherein the jackscrew (320) is threaded with a nut, and the nut is located on a side of the baffle (400) facing away from the ram (500).

9. The device for pulling out the tension spring sleeve of the rocker arm hinge pin of the coal mining machine according to claim 1, wherein two jackscrews (300) and the first through holes (410) matched with the jackscrews (300) are symmetrically arranged.