阅读说明：本技术 一种皮带机自移机尾改向滚筒座及皮带机自移机尾 (Belt conveyor self-moving tail direction-changing roller base and belt conveyor self-moving tail ) 是由 张庆良 庞晴晴 汤东旭 苗祥云 姜彪 徐凯 李菊 李文亮 刘孟芸 李全会 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种皮带机自移机尾改向滚筒座及皮带机自移机尾,包括：座圈,其用于固设于皮带机自移机尾的尾架；轴套,其用于与改向滚筒的滚筒轴套接；轴承,轴承的外圈与座圈套接,轴承的内圈与轴套套接。由于轴承内圈通过轴套与改向滚筒的滚筒轴相连,属于外置式轴承,因此,使得轴承的规格不受改向滚筒的直径尺寸限制,可以在较大范围内选择轴承规格；而且,该皮带机自移机尾改向滚筒座设于尾架,成为一个相对独立的组件,皮带机自移机尾改向滚筒座的整体大小可根据轴承的大小而定,无需考虑尾架本身的结构尺寸限制等问题,从而可以根据改向滚筒的运动需求选择合适规格的轴承,使改向滚筒的安全系数更大,使用寿命更长。(The invention discloses a belt conveyor self-moving tail direction-changing roller seat and a belt conveyor self-moving tail, comprising: the seat ring is fixedly arranged on a tail frame of the self-moving tail of the belt conveyor; the shaft sleeve is used for being sleeved with a roller shaft of the bend roller; the outer ring of the bearing is sleeved with the seat ring, and the inner ring of the bearing is sleeved with the shaft sleeve. Because the inner ring of the bearing is connected with the drum shaft of the turnabout drum through the shaft sleeve and belongs to an external bearing, the specification of the bearing is not limited by the diameter size of the turnabout drum, and the specification of the bearing can be selected in a larger range; moreover, the belt conveyor self-moving tail direction-changing roller seat is arranged on the tail frame and becomes a relatively independent assembly, the whole size of the belt conveyor self-moving tail direction-changing roller seat can be determined according to the size of the bearing, the problems of structural size limitation and the like of the tail frame are not required to be considered, and therefore the bearing with a proper specification can be selected according to the movement requirement of the direction-changing roller, the safety coefficient of the direction-changing roller is larger, and the service life of the direction-changing roller is longer.)

1. The utility model provides a belt feeder is from moving tail redirection roller seat which characterized in that includes:

the seat ring (11) is fixedly arranged on a tail frame of the self-moving tail of the belt conveyor;

the shaft sleeve (2) is used for being connected with the roller shaft sleeve (2) of the turnabout drum;

the bearing (3), the outer lane of bearing (3) with seat circle (11) cup joint, the inner circle of bearing (3) with axle sleeve (2) cup joint.

2. The belt conveyor self-moving tail redirection roller base according to claim 1, wherein the outer circumference of the shaft sleeve (2) is provided with:

a shoulder (21) for limiting one end of the bearing (3);

and the limiting groove (22) is internally provided with a retaining ring (4), and the retaining ring (4) is used for limiting the other end of the bearing (3).

3. The belt conveyor self-moving tail redirection roller base according to claim 1, wherein a key groove (23) is formed in the inner wall of the shaft sleeve (2).

4. The belt conveyor self-moving tail bend roller seat according to claim 1, wherein an outer end cover (5) is connected to a first end of the seat ring (1) in a sealing mode, the outer end cover (5) comprises a cylindrical portion (51) extending into the seat ring (11), and the end portion of the cylindrical portion (51) abuts against the bearing (3).

5. The belt conveyor self-moving tail redirection roller base according to claim 4, wherein one end of the shaft sleeve (2) facing the outer end cover (5) is hermetically connected with an inner end cover (6).

6. The belt conveyor self-moving tail redirection roller base according to any one of claims 1 to 5, wherein a connecting plate (12) is connected to the second end of the seat ring (11), a relief hole is formed in the middle of the seat ring, and the connecting plate (12) is used for being fixedly arranged on the tail frame.

7. The belt conveyor self-moving tail redirection roller base according to claim 6, wherein a mechanical seal frame (7) is connected to the connecting plate (12) in a sealing mode, and the mechanical seal frame (7) is connected with the shaft sleeve (2) in a sealing mode.

8. The belt conveyor self-moving tail direction-changing roller base according to claim 7, wherein a blocking table (24) is arranged on the shaft sleeve (2), an extending part extending into the seat ring (11) is arranged on the mechanical sealing frame (7), a limiting boss is arranged on the extending part, and a mechanical sealing element (8) is arranged between the limiting boss and one side, facing the bearing (3), of the blocking table (24).

9. The belt conveyor self-moving tail redirection roller base according to any one of claims 1 to 5, wherein the seat ring (11) is provided with an oil receiving port (111) penetrating through the thickness of the seat ring, and the oil receiving port is used for being connected with an oil tank joint.

10. The utility model provides a belt feeder is from moving tail which characterized in that includes:

the device comprises a tail frame and a turnabout drum, wherein drum shafts are respectively arranged at two ends of the turnabout drum;

the belt conveyor self-moving tail redirection roller base according to any one of claims 1 to 9, wherein the seat ring (11) of the belt conveyor self-moving tail redirection roller base is fixedly arranged on the tail frame; the roller shaft sleeve (2) is arranged in the shaft sleeve (2) of the belt conveyor self-moving tail direction-changing roller base.

Technical Field

The invention relates to the technical field of coal mine mechanical equipment, in particular to a belt conveyor self-moving tail redirection roller base. In addition, the invention also relates to a belt conveyor self-moving tail comprising the belt conveyor self-moving tail redirection roller base.

Background

The self-moving tail of the belt conveyor generally comprises a tail frame, a bend pulley, a driving part, a belt and the like, wherein the bend pulley is arranged on the tail frame and is mainly used for transmitting the power of the driving part to the belt and changing the conveying direction of the belt so as to enable the belt and the bend pulley to run synchronously. That is, the performance of the bend pulley directly affects the running performance of the belt.

The two ends of the turnabout drum are supported by a drum base arranged on the tail frame, the drum base in the prior art comprises a supporting shaft, and the turnabout drum comprises an installation inner ring for embedding a bearing, namely, the turnabout drum is rotatably connected with the drum base through a built-in bearing.

However, for some use scenarios, the diameter of the direction-changing drum is designed to be smaller due to the limitation of the installation space of the system use place, and the belt width of the belt conveyor matched with the direction-changing drum is usually 1800mm, and the belt speed is 4m/s to 4.5m/s, which requires that the direction-changing drum has higher rotating speed compared with the tail drum of the common belt conveyor to meet the belt speed requirement. In order to ensure high-speed and reliable operation of the turnabout drum, a large-size bearing is required, and the size of the turnabout drum limits the specification of the used bearing, so that the safety factor of a product is low, and the service life of the turnabout drum is shortened.

In summary, how to avoid the limitation of the size of the bend pulley on the specification of the bearing and enable the bend pulley to have higher safety factor and longer service life is a problem to be solved urgently by those skilled in the art at present.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a direction-changing drum seat for a belt conveyor self-moving tail, which can ensure that a large-sized bearing is adopted to provide a rotary support for a direction-changing drum, so that the safety factor and the service life of the direction-changing drum can be improved.

The invention also aims to provide the self-moving tail of the belt conveyor, which comprises the self-moving tail direction-changing roller seat of the belt conveyor, and the direction-changing rollers of the self-moving tail direction-changing roller seat have high operation safety and long service life.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a belt feeder is from moving tail redirection cylinder seat, includes:

the seat ring is fixedly arranged on a tail frame of the self-moving tail of the belt conveyor;

the shaft sleeve is used for being sleeved with a roller shaft of the bend roller;

the outer ring of the bearing is sleeved with the seat ring, and the inner ring of the bearing is sleeved with the shaft sleeve.

Preferably, the outer peripheral portion of the boss is provided with:

the retaining shoulder is used for limiting one end of the bearing;

and the limiting groove is internally provided with a check ring, and the check ring is used for limiting the other end of the bearing.

Preferably, the inner wall of the shaft sleeve is provided with a key groove.

Preferably, an outer end cover is hermetically connected to the first end of the seat ring, the outer end cover comprises a cylindrical portion extending into the seat ring, and an end of the cylindrical portion is abutted to the bearing.

Preferably, an inner end cover is connected to one end of the shaft sleeve facing the outer end cover in a sealing mode.

Preferably, the second end of the seat ring is connected with a connecting plate, the middle part of the seat ring is provided with a yielding hole, and the connecting plate is fixedly arranged on the tailstock.

Preferably, the connecting plate is connected with a mechanical seal frame in a sealing manner, and the mechanical seal frame is connected with the shaft sleeve in a sealing manner.

Preferably, the axle sleeve is equipped with and keeps off the platform, mechanical seal puts up and is equipped with and stretches into the portion of stretching into in the seat circle, the portion of stretching into is equipped with spacing boss, spacing boss with keep off the platform orientation be equipped with mechanical seal between one side of bearing.

Preferably, the seat ring is provided with an oil receiving opening penetrating through the thickness of the seat ring, and the seat ring is used for being connected with a tank joint.

A belt conveyor self-moving tail comprises:

the device comprises a tail frame and a turnabout drum, wherein drum shafts are respectively arranged at two ends of the turnabout drum;

the seat ring of the self-moving tail direction-changing roller seat of any belt conveyor is fixedly arranged on the tail frame; the roller shaft sleeve is arranged in the shaft sleeve of the belt conveyor self-moving tail direction-changing roller base.

According to the belt conveyor self-moving tail bend roller seat, the inner ring of the bearing is connected with the roller shaft of the bend roller through the shaft sleeve and belongs to an external bearing, so that the specification of the bearing is not limited by the diameter size of the bend roller, and the specification of the bearing can be selected in a larger range; moreover, the belt conveyor self-moving tail direction-changing roller seat is arranged on the tail frame and becomes a relatively independent assembly, the whole size of the belt conveyor self-moving tail direction-changing roller seat can be determined according to the size of the bearing, the problems of structural size limitation and the like of the tail frame are not required to be considered, and therefore the bearing with a proper specification can be selected according to the movement requirement of the direction-changing roller, the safety coefficient of the direction-changing roller is larger, and the service life of the direction-changing roller is longer.

The belt conveyor self-moving tail provided by the invention comprises the belt conveyor self-moving tail direction-changing roller seat, and the direction-changing rollers of the belt conveyor self-moving tail direction-changing roller seat are high in operation safety and long in service life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a cross-sectional view of a direction-changing roller base of a self-moving tail of a belt conveyor according to an embodiment of the present invention;

FIG. 2 is a left side view of a direction-changing roller base of the self-moving tail of the belt conveyor shown in FIG. 1;

FIG. 3 is a right side view of a direction-changing roller base of the self-moving tail of the belt conveyor shown in FIG. 1;

FIG. 4 is a cross-sectional view of the bushing of FIG. 1;

FIG. 5 is a right side view of the bushing shown in FIG. 4;

FIG. 6 is a cross-sectional view of the outer cap of FIG. 1;

FIG. 7 is a right side view of the outer end cap of FIG. 6;

FIG. 8 is a cross-sectional view of the inner end cap of FIG. 1;

FIG. 9 is a left side view of the inner end cap of FIG. 8;

FIG. 10 is a cross-sectional view of the race and web of FIG. 1;

FIG. 11 is a front view of the race and web of FIG. 10;

FIG. 12 is a right side view of the race and web of FIG. 10.

The reference numerals in fig. 1 to 12 are as follows:

11 is a seat ring, 111 is an oil receiving port, 112 is a plug, 113 is a hanging ring, 12 is a connecting plate, 121 is a second mounting hole, 122 is a spare mounting hole, 123 is a second threaded hole, 2 is a shaft sleeve, 21 is a retaining shoulder, 22 is a limiting groove, 23 is a key groove, 24 is a retaining table, 25 is a first stepped groove, 26 is a second sealing groove, 3 is a bearing, 4 is a retaining ring, 5 is an outer end cover, 51 is a cylindrical part, 52 is a first sealing groove, 53 is a first mounting hole, 6 is an inner end cover, 61 is a circular ring-shaped surrounding edge, 62 is a fourth mounting hole, 7 is a mechanical sealing frame, 71 is a third mounting hole, 8 is a mechanical sealing element, 91 is a first sealing ring, 92 is a second sealing ring, and 93 is a third sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a belt conveyor self-moving tail bend drum seat which can ensure that a large-size bearing is adopted to provide rotary support for a bend drum, so that the safety factor of the bend drum can be improved and the service life of the bend drum can be prolonged. The other core of the invention is to provide the belt conveyor self-moving tail comprising the belt conveyor self-moving tail direction-changing roller seat, and the direction-changing rollers of the belt conveyor self-moving tail direction-changing roller seat have high operation safety and long service life.

Please refer to fig. 1-12, which are drawings illustrating the present invention.

As shown in figure 1, the invention provides a belt conveyor self-moving tail bend roller base, which comprises a seat ring 11, a shaft sleeve 2 and a bearing 3, wherein the seat ring 11 is fixedly arranged on a tail frame of a belt conveyor self-moving tail, the shaft sleeve 2 is connected with the roller shaft sleeve 2 of the bend roller, the bearing 3 is arranged between the seat ring 11 and the shaft sleeve 2, the outer ring of the bearing 3 is sleeved with the seat ring 11, and the inner ring of the bearing 3 is sleeved with the shaft sleeve 2.

When the automatic moving tail bend roller seat of the belt conveyor is installed, the seat ring 11 of the automatic moving tail bend roller seat of the belt conveyor is fixedly arranged on a tail frame of the automatic moving tail of the belt conveyor, a roller shaft of the bend roller of the automatic moving tail of the belt conveyor is fixedly sleeved with the shaft sleeve 2, and the bearing 3 is arranged between the shaft sleeve 2 and the seat ring 11, so that the shaft sleeve 2 can be ensured to rotate relative to the seat ring 11, and the bend roller can drive the shaft sleeve 2 to rotate relative to the seat ring 11 when the power of a driving part of the automatic moving tail of the belt conveyor acts on the bend roller.

That is, the invention utilizes the belt conveyor self-moving tail bend drum seat to play a role in rotatably supporting the bend drum, and because the inner ring of the bearing 3 is connected with the drum shaft of the bend drum through the shaft sleeve 2 and belongs to the external bearing 3, the specification of the bearing 3 is not limited by the diameter size of the bend drum, and the specification of the bearing 3 can be selected in a larger range; moreover, the belt conveyor self-moving tail bend roller seat is arranged on the tail frame and becomes a relatively independent assembly, the whole size of the belt conveyor self-moving tail bend roller seat can be determined according to the size of the bearing 3, the problems of structural size limitation and the like of the tail frame are not required to be considered, and therefore the bearing 3 with a proper specification can be selected according to the movement requirement of the bend roller, the safety coefficient of the bend roller is larger, and the service life of the bend roller is longer.

In view of the convenience of mounting the bearing 3, in order to facilitate the axial positioning of the bearing 3, on the basis of the above embodiment, as shown in fig. 4 and fig. 1, the outer circumferential portion of the sleeve 2 is provided with a stop shoulder 21 and a limiting groove 22, the stop shoulder 21 is used for limiting one end of the bearing 3, and the retaining ring 4 is mounted in the limiting groove 22 to limit the other end of the bearing 3 by the retaining ring 4. That is, during installation, the bearing 3 is sleeved on the outer periphery of the shaft sleeve 2, so that one end of the bearing 3 abuts against the retaining shoulder 21, the bearing 3 is installed in place, at this time, the retaining ring 4 is installed in the limiting groove 22, and the bearing 3 is firmly fixed on the shaft sleeve 2 by utilizing the retaining effect of the retaining ring 4 on the other end of the bearing 3. Then, the bearing 3 and the sleeve 2 are integrally mounted on the race 11.

In addition, in view of the reliability of the connection of the hub 2 with the direction-changing drum, on the basis of the above-described embodiment, the inner wall of the hub 2 is provided with the key groove 23 for mounting the key. That is, a key is arranged between the shaft sleeve 2 and the drum shaft of the bend drum, so that the rotation of the drum shaft of the bend drum relative to the shaft sleeve 2 is reduced as much as possible under the action of the key, and the loss caused by the friction between the drum shaft and the shaft sleeve 2 can be reduced.

Preferably, the number of the key slots 23 is two, and the two key slots 23 are symmetrically arranged on the inner wall of the shaft sleeve 2.

Further, in order to prevent dust, impurities, etc. from entering the bearing 3 and affecting the smooth operation of the bearing 3, in addition to the above embodiment, the first end of the seat ring 11 is hermetically connected with the outer end cover 5, the outer end cover 5 includes the cylindrical portion 51 extending into the seat ring 11, and the end of the cylindrical portion 51 is abutted against the bearing 3. That is, in the present embodiment, by providing the outer end cap 5 at one end of the seat ring 11, the first end of the seat ring 11 is sealed by the outer end cap 5, that is, one end of the shaft sleeve 2 and the bearing 3 is sealed, so that dust, impurities, and the like are prevented from entering the inside of the bearing 3 from one end of the shaft sleeve 2. Meanwhile, the cylindrical part 51 of the outer end cover 5 is used for tightly abutting against one end of the outer ring of the bearing 3, so that the friction force between the bearing 3 and the seat ring 11 is increased, and the firmness of fixing the outer ring of the bearing 3 is improved.

It should be noted that the sealing connection method between the outer cover 5 and the seat ring 11 is not limited in this embodiment, and preferably, as shown in fig. 6 and 1, a first sealing groove 52 is provided in an outer peripheral portion of the cylindrical portion 51, and a first sealing ring 91 is filled therein, that is, the cylindrical portion 51 and the seat ring 11 are sealed by the first sealing ring 91. It will be appreciated that the outer diameter of the cylindrical portion 51 is the same as the inner diameter of the seat ring 11 to ensure the sealing of the connection therebetween. Further preferably, the groove width of the first sealing groove 52 ranges from 0.9cm to 1.0 cm; the groove depth of the first sealing groove 52 is 0.5 cm-1.0 cm.

In addition, in this embodiment, the fixing manner between the outer end cover 5 and the seat ring 11 is not limited, preferably, the outer end cover 5 is provided with a first mounting hole 53, the first end of the seat ring 11 is provided with a first threaded hole, and the outer end cover 5 and the seat ring 11 are fixedly connected through a bolt which is inserted into the first mounting hole 53 and is in threaded connection with the first threaded hole. Preferably, as shown in fig. 7, the outer end cap 5 is provided with twelve first mounting holes 53, and the first mounting holes 53 are uniformly distributed on the circumference of the outer end cap 5.

Further, in order to prevent dust, foreign matter, and the like from entering the boss 2 and affecting the rotation of the direction-changing drum and the boss 2, on the basis of the above embodiment, an inner end cap 6 is sealingly attached to one end of the boss 2 facing the outer end cap 5. That is to say, this embodiment makes whole axle sleeve 2 form the sealed environment of a second grade through set up interior end cover 6 towards the one end of outer end cover 5 at axle sleeve 2, is favorable to avoiding in dust and impurity etc. get into axle sleeve 2 more. Meanwhile, each part of the self-moving tail direction-changing roller base of the whole belt conveyor is an independent individual, when the bearing 3 has a problem in the working process, the self-moving tail direction-changing roller base of the whole belt conveyor is not disassembled, the bearing 3 can be overhauled and maintained only by disassembling the outer end cover 5, and the influence on the inside of the shaft sleeve 2 can be avoided in the overhauling process; when a problem occurs in the shaft sleeve 2, the inner end cover 6 can be further detached for overhauling and maintaining, so that the maintenance time and cost can be greatly saved, and great convenience is brought to the routine maintenance work of an overhauling worker.

It should be noted that, in this embodiment, a specific fixing manner between the inner end cover 6 and the shaft sleeve 2 is not limited, and preferably, the inner end cover 6 is provided with a plurality of fourth mounting holes 62 along the circumferential direction thereof, the end portion of the shaft sleeve 2 facing the outer end cover 5 is provided with a third threaded hole, and the inner end cover 6 and the shaft sleeve 2 are fixed by a bolt which is inserted through the fourth mounting hole 62 and is in threaded connection with the third threaded hole.

In addition, in view of the sealing property between the inner end cap 6 and the shaft housing 2, it is preferable that, as shown in fig. 8, a circumferential edge portion of the inner end cap 6 is provided with a circular ring-shaped surrounding edge 61 for fitting over an outer circumferential portion of the shaft housing 2, that is, the inner end cap 6 is buckled on the shaft housing 2 at the time of mounting. As shown in fig. 4 and fig. 1, the outer peripheral portion of the shaft sleeve 2 corresponding to the circular ring-shaped surrounding edge 61 is provided with a second sealing groove 26, which is filled with a second sealing ring 92, so that the inner end cap 6 is hermetically connected with the shaft sleeve 2 by the second sealing ring 92.

In addition, in view of the convenience of the seat 11 being mounted on the tailstock, on the basis of the above embodiment, the second end of the seat 11 is connected with the connection plate 12, the middle part of the seat has the relief hole, and the connection plate 12 is used for being fixedly mounted on the tailstock. That is, the race 11 of the present embodiment is mounted to the tail stock by the connecting plate 12, and the race 11 and the connecting plate 12 are preferably fixed by welding so that they form a single body. It will be appreciated that the intermediate portion of the connecting plate 12 is provided with a relief hole to relieve the drum shaft mounting, preferably the diameter of the relief hole is the same as the inner diameter of the race 11. Preferably, the connecting plate 12 is a square steel plate made of Q345.

In view of convenience of maintenance, it is preferable that the connection plate 12 is provided with a plurality of second mounting holes 121 for connection with the tail stock, as shown in fig. 12. That is, during the installation, can directly lock connecting plate 12 on the tailstock through the bolt that wears to locate second mounting hole 121 to form the dismantled connection between connecting plate 12 and the tailstock, thereby make things convenient for the maintainer dismouting, easy to maintain, repair.

Further preferably, as shown in fig. 12, a spare mounting hole 122 is further provided on the connecting plate 12 near each second mounting hole 121 to prevent the second mounting hole 121 from being damaged and deformed to affect the fixing of the connecting plate 12, that is, when the second mounting hole 121 is damaged and deformed, the spare mounting hole 122 corresponding to the damaged second mounting hole 121 can be used for mounting and fixing to ensure the fixing reliability of the connecting plate 12 on the tail bracket. Preferably, the number of the second mounting holes 121 and the spare mounting holes 122 is four, and two pairs of four second mounting holes 121 and four spare mounting holes 122 are respectively disposed at four corners of the connecting plate 12.

In addition, in order to prevent dust, impurities and the like from entering the bearing 3 from the second end of the race 11 and affecting the smoothness of the operation of the bearing 3, in addition to the above embodiment, the mechanical seal holder 7 is connected to the connecting plate 12 in a sealing manner, and the mechanical seal holder 7 is connected to the shaft sleeve 2 in a sealing manner. That is to say, in this embodiment, by additionally providing the mechanical seal holder 7 at the second end of the seat ring 11, and enabling the mechanical seal holder 7 to be respectively connected with the connecting plate 12 and the shaft sleeve 2 in a sealing manner, the sealing performance at the second end of the seat ring 11 is achieved, and dust, impurities and the like are prevented from entering the inside of the bearing 3 from the second end of the seat ring 11.

In the present embodiment, the sealing connection mode between the mechanical seal holder 7 and the connecting plate 12 is not limited. Preferably, the mechanical seal holder 7 is provided with a third seal groove, in which a third seal ring 93 is filled, so as to realize the seal between the mechanical seal holder 7 and the connecting plate 12 by the third seal ring 93. In addition, in view of convenience in fixing the mechanical seal holder 7 and the connecting plate 12, preferably, as shown in fig. 10, one end of the connecting plate 12, which is far away from the seat ring 11, is provided with a sinking groove, a bottom of the sinking groove is provided with a plurality of second threaded holes, and the mechanical seal holder 7 is provided with third mounting holes 71 corresponding to the second threaded holes one to one, so that the mechanical seal holder 7 and the connecting plate 12 are fixed by bolts penetrating through the third mounting holes 71 and being in threaded connection with the second threaded holes.

In the present embodiment, the sealing connection mode between the mechanical seal holder 7 and the boss 2 is not limited. Preferably, as shown in fig. 4 and fig. 1, the shaft sleeve 2 is provided with a stop 24, the mechanical seal holder 7 is provided with an extending portion extending into the seat ring 11, the extending portion is provided with a limit boss, and a mechanical seal 8 is arranged between the limit boss and one side of the stop 24 facing the bearing 3. That is, in this embodiment, the mechanical seal 8 disposed between the limit boss and the baffle 24 is used to seal the mechanical seal holder 7 and the shaft sleeve 2, so as to prevent dust, impurities, and the like from entering the bearing 3 from the gap between the mechanical seal holder 7 and the shaft sleeve 2, and meanwhile, the mechanical seal 8 seals the gap between the shaft sleeve 2 and the mechanical seal holder 7, and further prevent the shaft sleeve 2 from shaking when the direction-changing drum rotates. Meanwhile, it can be seen that the limiting boss is located on one side of the blocking platform 24 facing the bearing 3, that is, the blocking platform 24 also has an effect of axially limiting the mechanical seal frame 7. As shown in fig. 4 and 1, a first stepped groove 25 is formed in one side of the baffle 24 facing the bearing 3, a second stepped groove corresponding to and communicated with the first stepped groove 25 is formed in the limiting boss, and the mechanical sealing element 8 is arranged in the first stepped groove 25 and the second stepped groove.

Further preferably, the run-in abuts against the bearing 3. That is, in the embodiment, the protruding portion of the mechanical seal holder 7 abuts against one end of the outer ring of the bearing 3, so as to increase the friction between the bearing 3 and the race 11 and improve the firmness of fixing the outer ring of the bearing 3.

In addition, in view of lubrication of the bearing 3, on the basis of the above-described embodiment, the race 11 is provided with an oil receiving port 111 penetrating the thickness thereof for connection to a tank joint. That is to say, after oil receiving port 111 links to each other with the oil tank joint, the accessible oil tank is direct to be carried out the fuel feeding to bearing 3 via oil receiving port 111, need not artifical oiling to improve bearing 3 operational environment's quality, prolong bearing 3's life, the reliability of guarantee bearing 3 operation.

It is understood that the oil receiving port 111 may be blocked before the oil receiving port 111 is connected to the tank joint to prevent dust, impurities, etc. from entering the bearing 3 from the oil receiving port 111. Preferably, the oil receiving opening 111 is a hidden screw hole, so that the oil receiving opening 111 can be blocked by a screw plug 112 before the oil receiving opening 111 is connected to the tank joint.

It should be noted that, in this embodiment, the specific number and distribution of the oil receiving ports 111 are not limited, and preferably, the number of the oil receiving ports 111 is four, the four oil receiving ports 111 are divided into two pairs, the oil receiving ports 111 of the same pair are disposed oppositely, and the oil receiving ports 111 of different pairs are disposed collinearly along the axis of the seat ring 11.

In addition, in view of the convenience of installing the seat 11, it is preferable that the outer periphery of the seat 11 is provided with two hanging rings 113, and the number of the hanging rings 113 is preferably two, and the two hanging rings 113 are symmetrically arranged so as to facilitate the installation of the seat 11 by means of lifting.

Besides the belt conveyor self-moving tail direction-changing roller seat, the invention also provides a belt conveyor self-moving tail comprising the belt conveyor self-moving tail direction-changing roller seat disclosed by the embodiment, the belt conveyor self-moving tail further comprises a tail frame and a direction-changing roller, roller shafts are respectively arranged at two ends of the direction-changing roller, a seat ring 11 of the belt conveyor self-moving tail direction-changing roller seat is fixedly arranged on the tail frame, and a roller shaft sleeve 2 of the direction-changing roller is arranged in the shaft sleeve 2 of the belt conveyor self-moving tail direction-changing roller seat. The structure of other parts of the self-moving tail of the belt conveyor refers to the prior art, and is not described herein again.

That is to say, the important point of this embodiment is that the belt conveyor self-moving tail direction-changing roller base disclosed in any one of the above embodiments is disposed on the tail frame of the belt conveyor self-moving tail, so as to provide a rotational support for the direction-changing rollers by using the belt conveyor self-moving tail direction-changing roller base, and at the same time, the overall size of the belt conveyor self-moving tail direction-changing roller base is not limited by the radial size of the direction-changing rollers, which is beneficial to selecting a large-size bearing 3, so as to meet the movement requirement of the direction-changing rollers, and improve the safety factor and the service life of the direction-changing rollers.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The belt conveyor self-moving tail direction-changing roller seat and the belt conveyor self-moving tail provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.