阅读说明：本技术 采煤机行走部 (Coal mining machine walking part ) 是由 李辉 周常飞 郭岱 王广 刘凯 朱信平 宋相坤 胡俊 张斌 张晓永 卢运鹏 李 于 2019-10-16 设计创作，主要内容包括：本发明涉及一种采煤机行走部,包括行走箱壳体、导向滑靴、连接轴、压盖和行走轮组件,导向滑靴的前后耳部自下向上套在行走箱壳体的前后外侧面上,连接轴水平贯穿行走箱壳体和导向滑靴,行走轮组件安装在连接轴上,且位于所述行走箱壳体的腔室内,所述连接轴在所述导向滑靴的带动下能够相对所述行走箱壳体转动,所述连接轴的至少近老塘侧一端上套接一个所述压盖,所述导向滑靴的相应侧的耳部套接并固定在所述压盖上,所述压盖上供所述连接轴从中穿过的孔为腰形孔,所述连接轴穿过所述压盖的轴段横截面呈扁圆形。采用本发明的行走部,导向滑靴和行走轮等易损件拆卸方便,检修效率高,检修劳动强度大幅降低,且行走适应性好。(The invention relates to a coal mining machine walking part which comprises a walking box shell, a guide sliding shoe, a connecting shaft, a pressing cover and a walking wheel assembly, wherein a front lug part and a rear lug part of the guide sliding shoe are sleeved on the front outer side surface and the rear outer side surface of the walking box shell from bottom to top, the connecting shaft horizontally penetrates through the walking box shell and the guide sliding shoe, the walking wheel assembly is installed on the connecting shaft and is positioned in a cavity of the walking box shell, the connecting shaft can rotate relative to the walking box shell under the driving of the guide sliding shoe, at least one end, close to an old pond side, of the connecting shaft is sleeved with the pressing cover, the lug parts on the corresponding sides of the guide sliding shoe are sleeved and fixed on the pressing cover, a hole through which the connecting shaft passes is a waist-shaped hole, and the cross section of the shaft. By adopting the walking part, wearing parts such as the guide sliding shoes, the walking wheels and the like are convenient to disassemble, the overhauling efficiency is high, the overhauling labor intensity is greatly reduced, and the walking adaptability is good.)

1. The utility model provides a coal-winning machine running part which characterized in that: including walking case casing, direction piston shoes, connecting axle and walking wheel subassembly, the front and back ear of direction piston shoes cover from bottom to top on the lateral surface around the walking case casing, the connecting axle level runs through walking case casing and direction piston shoes, the walking wheel subassembly is installed on the connecting axle, and be located in the cavity of walking case casing, the connecting axle is in can be relative under the drive of direction piston shoes the walking case casing rotates.

2. The shearer loader running part according to claim 1, wherein: the guide sliding shoe is characterized by further comprising a pressing cover, one end, close to the old pond, of the connecting shaft is sleeved with one pressing cover, and the ear parts of the corresponding sides of the guide sliding shoes are sleeved and detachably fixed on the pressing covers.

3. The shearer loader running part according to claim 2, wherein: and at least one end of the connecting shaft, which is close to the old pond side, is provided with a threaded hole.

4. The shearer loader running part according to claim 3, wherein: the external diameter of gland sets to the step shaft structure, the hole of the ear of the corresponding end of direction boots sets to the shoulder hole structure, the external diameter of gland with the hole of the ear of the corresponding end of direction boots cooperatees.

5. The shearer loader running part according to claim 4, wherein: the external diameter of gland is big outside little stepped shaft structure in, the hole of the ear of the corresponding end of direction boots is big outside little inside the country and link up the stepped hole structure.

6. the shearer loader traveling part according to claim 5, wherein: the diameter of the shaft section of the connecting shaft sleeved with the gland is smaller than that of the shaft section of the sleeved guide sliding shoe.

7. The shearer loader running part according to claim 1, wherein: the direction boots are whole casting structure or forge welding structure, and when for the forge welding structure, it includes front bezel, back plate and coupling shaft three, and front bezel and back plate are through running through coupling shaft fixed connection, the ear is located the upper portion of front bezel and back plate respectively around the direction boots.

8. The shearer running part according to claim 1, 2, 3, 4, 5, 6, or 7, wherein: the hole on the gland through which the connecting shaft passes is a kidney-shaped hole, the cross section of the shaft section of the connecting shaft passing through the gland is in an oblate shape, in an initial installation state, the upper parallel plane and the lower parallel plane of the oblate shaft section of the connecting shaft are respectively in direct contact with the upper corresponding plane and the lower corresponding plane of the kidney-shaped hole of the gland, and the left and right maximum linear dimension of the kidney-shaped hole of the gland is larger than the diameter of the cylindrical surface of the oblate shaft section of the connecting shaft.

9. The shearer running part according to claim 1, 2, 3, 4, 5, 6, or 7, wherein: the left end and the right end of the lower part of the outer side surface of the guide sliding shoe close to the coal wall are set to be inclined planes, the end parts of the inclined planes are close to the old pond side, and the middle parts of the inclined planes are close to the coal wall side.

10. The shearer running part according to claim 1, 2, 3, 4, 5, 6, or 7, wherein: the hole in the gland through which the connecting shaft passes is a kidney-shaped hole, the cross section of the shaft section of the connecting shaft passing through the gland is in an oblate shape, the upper and lower parallel planes of the oblate shaft section of the connecting shaft are respectively in direct contact with the upper and lower corresponding planes of the kidney-shaped hole of the gland in an initial installation state, the left and right maximum linear dimension of the kidney-shaped hole of the gland is larger than the diameter of the cylindrical surface of the oblate shaft section of the connecting shaft, and the left and right ends of the outer side surface of the guide slipper close to the coal wall side are arranged into inclined planes with the end parts close to the old pond side and the middle parts close to the coal wall side.

Technical Field

The invention relates to a tail end structure of a walking part of a coal mining machine, in particular to an installation structure of a guide sliding shoe, and belongs to the technical field of coal mining equipment.

Background

With the increasing degree of mechanization and intelligence of the coal face and the deepening of the people-oriented idea, the labor force for safely and efficiently producing and releasing underground workers is more and more emphasized by various coal mine enterprises.

The coal mining machine is used as working face coal mining equipment, and the reliable and safe operation of the coal mining machine is guaranteed, so that the coal mining machine is of great importance to the production of an ore side. The coal cutting machine has two states of straight-line coal cutting and inclined cutting feed coal cutting, particularly in the inclined cutting feed state, if the guide sliding shoes are not designed in place, the blocking phenomenon can often occur, and in severe cases, the guide sliding shoes can be broken, so that the production of a mine is influenced.

the guide sliding shoes and the travelling wheels are used as wearing parts of the whole coal mining machine and need to be replaced frequently. The underground wet and large dust easily enters a gap between the walking box and the connecting shaft, the joint of the walking box shell and the connecting shaft is also easily rusted, and in addition, the underground disassembling operation space is limited, so that the walking part guide sliding shoes and the walking wheels are difficult to disassemble due to a series of factors, and can be replaced by one to two shifts often, the labor intensity of workers is increased, and the production of a coal mine is delayed.

Disclosure of Invention

The invention aims to provide a coal mining machine walking part, which is more convenient and efficient to disassemble wearing parts such as guide sliding shoes, walking wheels and the like, so that the labor intensity of workers is reduced, the maintenance work efficiency is improved, and the requirements of high yield and high efficiency of a coal mine are met.

The main technical scheme of the invention is as follows:

The utility model provides a coal-winning machine walking portion, includes walking case casing, direction piston shoes, connecting axle and walking wheel subassembly, the front and back ear of direction piston shoes is from upwards overlapping from bottom to top on the lateral surface around the walking case casing, the connecting axle level runs through walking case casing and direction piston shoes, walking wheel subassembly coaxial arrangement is in on the connecting axle, and be located in the cavity of walking case casing, the connecting axle is in can be relative under the drive of direction piston shoes the walking case casing rotates.

The coal mining machine walking part can further comprise a gland, one end of at least one side of the connecting shaft close to the old pond is sleeved with one gland, and the ear parts of the corresponding sides of the guide sliding shoes are sleeved and detachably fixed on the gland.

and at least one end of the connecting shaft close to the old pond side is preferably provided with a threaded hole.

the external diameter of gland can set to the step shaft structure, the hole of the ear of the corresponding end of direction boots also sets to the step hole structure correspondingly, the external diameter of gland with the hole of the ear of the corresponding end of direction boots cooperatees.

The outer diameter of the gland is preferably in a stepped shaft structure with a large outer part and a small inner part, and an inner hole of an ear part at the corresponding end of the guide sliding shoe is in a through stepped hole structure with a large outer part and a small inner part.

The diameter of the shaft section of the connecting shaft sleeved with the gland can be smaller than that of the shaft section of the sleeved guide sliding shoe.

The direction boots can be for whole casting structure or forge welding structure, and when for the forge welding structure, it can include front bezel, back plate and coupling shaft three, and front bezel and back plate are through running through coupling shaft fixed connection, the ear is located the upper portion of front bezel and back plate respectively around the direction boots.

The hole on the gland through which the connecting shaft passes is preferably a kidney-shaped hole, correspondingly, the cross section of the shaft section of the connecting shaft passing through the gland is preferably oblate, in an initial installation state, the upper and lower parallel planes of the oblate shaft section of the connecting shaft are respectively in direct contact with the upper and lower corresponding planes of the kidney-shaped hole of the gland, and the left and right maximum linear sizes of the kidney-shaped hole of the gland are larger than the diameter of the cylindrical surface of the oblate shaft section of the connecting shaft.

The left and right ends of the lower part of the outer side surface of the guide sliding shoe close to the coal wall are preferably set to be inclined planes with the end part close to the old pond side and the middle part close to the coal wall side.

The invention has the beneficial effects that:

according to the invention, the fixed connection relation between the connecting shaft and the walking box shell in the traditional installation structure of the guide sliding shoes and the walking box shell is changed into a relative rotation connection relation, so that when wearing parts such as the guide sliding shoes, the connecting shaft and the like are disassembled from the walking box shell, the disassembling difficulty is greatly reduced, the labor intensity of workers is greatly reduced, the time is reflected, the average time consumed for disassembling one set of guide sliding shoes and the connecting shaft under the traditional structure is more than 8 hours, after the structure disclosed by the invention is adopted, the average time consumed for disassembling one set of guide sliding shoes and the connecting shaft can be shortened to about 4 hours, and the field replacement and maintenance operation efficiency is doubled compared with that of the traditional structure.

Because supply on the gland the hole that the connecting axle passed from adopts waist shape hole, the connecting axle passes the transversal oblate of personally submitting of shaft section of gland utilizes two parallel planes of oblate shaft section and the direct contact transmission direction piston shoes holding power in two corresponding planes in waist shape hole and drives the connecting axle and rotate, utilizes the unilateral biggest space distance L3 of waist shape hole and oblate shaft section, keeps the unilateral small-size swing space of connecting axle on the horizontal plane. And by combining L3, the horizontal angle beta of the binding surface of the guide sliding shoe and the walking box and the sizes L1 and L2 of the guide opening of the guide sliding shoe, the advancing resistance of the coal mining machine is effectively reduced, the coal mining machine is ensured to smoothly pass through a scraper conveyor without blockage in the straight-line coal cutting and beveling feed states, and the adaptability of the guide sliding shoe and the walking part is improved.

According to the invention, the left end and the right end of the outer side surface of the guide sliding shoe close to the coal wall are set to be inclined planes S with the end parts close to the old pond side and the middle parts close to the coal wall side, so that the contact area of the guide sliding shoe and float coal is reduced, the advancing resistance of the coal mining machine is further reduced, and the adaptability of the walking part is improved.

Drawings

Fig. 1 is a schematic structural view of one embodiment of a shearer loader traveling section tip of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a top view of the guide shoe of FIG. 2;

FIG. 4 is a side elevational view of a coal wall of another embodiment of the guide shoe.

Detailed Description

the invention discloses a coal mining machine walking part, which comprises a walking box shell 1, guide sliding shoes 4, a connecting shaft 2 and a walking wheel assembly 5, wherein front and rear lug parts of the guide sliding shoes are sleeved on front and rear outer side surfaces of the walking box shell from bottom to top, namely the guide sliding shoes are wrapped on the walking box shell. The connecting shaft horizontally penetrates through the walking box shell and the guide sliding shoes, and the walking wheel assemblies are coaxially mounted on the connecting shaft and located in the cavities of the walking box shell. The connecting shaft can rotate relative to the walking box shell under the driving of the guide sliding shoes.

Under normal conditions, the medial surface of the front and back ear of direction boots is laminated with the front and back lateral surface of walking case casing respectively.

The guide sliding shoe is contacted with the pin row of the scraper conveyor to play a role in supporting and guiding. The traveling wheel assembly is directly meshed with the pin row to drive the coal mining machine to move along the direction of the working surface.

According to the invention, the fixed connection relation between the connecting shaft and the walking box shell in the traditional installation structure of the guide sliding shoes and the walking box shell is changed into the relative rotation connection relation, so that the disassembly difficulty is greatly reduced when easily-damaged parts such as the guide sliding shoes, the connecting shaft and the like are disassembled from the walking box shell, the time is reflected, the average time consumed for disassembling a set of guide sliding shoes and the connecting shaft under the traditional structure is more than 8 hours, after the structure of the invention is adopted, the average time consumed for disassembling a set of guide sliding shoes and the connecting shaft can be shortened to about 4 hours, and the field replacement and maintenance operation efficiency is doubled compared with that of the traditional structure.

Further, the coal mining machine walking part preferably further comprises a pressing cover 3, one pressing cover is sleeved on at least one end, close to the old pond, of the connecting shaft, namely the pressing cover is in direct contact with the connecting shaft, and the lug parts on the corresponding sides of the guide sliding shoes are sleeved and detachably fixed on the pressing cover. The guide sliding shoes drive the connecting shaft to rotate through the gland. The gland is mounted between the guide shoes and the connecting shaft from the outside of the guide shoes. In the embodiment shown in the drawing, two ends of the connecting shaft are respectively provided with a gland.

The gland can be fixed with the ear part on the corresponding side of the guide sliding shoe by adopting various existing modes. The embodiment shown in the attached drawings is fixed by uniformly distributing a plurality of screws 6 on the outer end surface of the gland in the circumferential direction, and the screws 6 are used for providing enough coupling force to ensure that the gland is reliably connected with the guide slipper. When the connecting shaft is disassembled, the gland 3 and the guide sliding shoe 4 can be separated only by disassembling the screw 6, and the axial constraint on the connecting shaft is released. Because the connecting shaft and the walking box shell are always kept in a relative rotation state during normal work, namely a certain gap is reserved between the connecting shaft and the walking box shell, the connecting shaft can be pulled out by applying a certain pulling force from the old pond side, so that the guide sliding shoe and the walking wheel component are separated from the connecting shaft, the guide sliding shoe and the walking wheel component are conveniently detached, and the labor intensity of underground operators is greatly saved.

And at least one end of the connecting shaft close to the old pond side is preferably provided with a threaded hole for installing a tool for drawing the connecting shaft, so that the connecting shaft is convenient to disassemble.

The external diameter of gland can set to the step shaft structure, the hole of the ear of the corresponding end of direction boots also sets to the step hole structure, the external diameter of gland with the hole of the ear of the corresponding end of direction boots cooperatees. For the sleeve connection between the gland and the guide shoe, other structural types than the above stepped shaft hole matching are not excluded, and for example, the matching of a conical surface and a cylindrical surface can also be adopted.

Furthermore, the outer diameter of the gland is of a stepped shaft structure with a large outer part and a small inner part, and an inner hole of the ear part at the corresponding end of the guide sliding shoe is of a through stepped hole structure with a large outer part and a small inner part. When the guide sliding shoe is installed, the guide sliding shoe, the walking box shell and the walking wheel assembly are assembled together through the connecting shaft, and finally the gland is arranged between the connecting shaft and the lug part of the guide sliding shoe and fixed on the guide sliding shoe.

The diameter of the shaft section of the connecting shaft which is sleeved with the gland is usually set to be smaller than that of the shaft section of the sleeved guide sliding shoe, and the gland is axially positioned by utilizing a shaft shoulder between the two shaft sections.

The guide slipper can be an integral casting structural part or a forge welding structural part, and when the guide slipper is a forge welding structural part, the guide slipper can comprise a front plate c, a rear plate a and a coupling shaft b, the front plate and the rear plate are fixedly connected through the coupling shaft, and the front ear part and the rear ear part of the guide slipper are respectively positioned on the upper parts of the front plate and the rear plate.

The walking box shell plays a supporting role and can be made into a type with an idler wheel component or a type without the idler wheel component according to requirements.

As a further preferable technical scheme, a hole in the gland through which the connecting shaft passes is a kidney-shaped hole, correspondingly, the cross section of the shaft section of the connecting shaft passing through the gland is oblate, in an initial installation state, upper and lower parallel horizontal planes of the oblate shaft section of the connecting shaft are respectively in direct contact with upper and lower corresponding planes of the kidney-shaped hole of the gland to transmit a supporting force of the guide slipper and drive the connecting shaft to rotate, and the maximum straight line size in the left-right direction of the kidney-shaped hole of the gland is slightly larger than the diameter of the cylindrical surface of the oblate shaft section of the connecting shaft. In a centered state, the distance between the waist-shaped hole and the single-side maximum gap in the left-right direction of the oblate shaft section is L3, so that the connecting shaft has a small swing scope on the horizontal plane.

The front ear part and the rear ear part of the guide sliding boot are preferably attached to two inner side surfaces of the walking box shell to form two bilaterally symmetrical inclined planes with the middle parts protruding out of the entity, and an included angle beta is formed between the inclined planes and a left and right extending vertical plane. By arranging the inclined plane, the walking part of the coal mining machine can adapt to the horizontal deflection angle of the chute of the scraper conveyor when walking on the scraper conveyor. By optimizing the parameter L3, the horizontal angle beta of the binding surface of the guide sliding shoe and the walking box and the sizes L1 and L2 of the guide opening of the guide sliding shoe, the advancing resistance of the coal mining machine can be effectively reduced, the coal mining machine is ensured to smoothly pass through a scraper conveyor without blockage in the straight-line coal cutting and beveling feed states, and the adaptability of the guide sliding shoe and the walking part is improved.

The left and right ends of the lower part of the outer side surface of the guide sliding shoe close to the coal wall are preferably set to be inclined planes S with the end part close to the old pond side and the middle part close to the coal wall side. The plane can be in a triangular shape or other polygonal shapes, so that the contact area between the guide sliding shoe and float coal can be reduced, the advancing resistance of the coal mining machine is effectively reduced, and the adaptability of the walking part is improved.

The terms top, bottom, left, right, and left herein refer to the top, bottom, left, and right in the perspective of fig. 4.