CN214447410U - Feeding and discharging device of mining mixer truck - Google Patents

Abstract

The utility model provides a feeding and discharging device of a mine mixer truck, which comprises a truck body support, an inner ring, a feeding and discharging unit and a floating aligning structure, wherein one end of the floating aligning structure is flexibly connected with the feeding and discharging unit, and the other end of the floating aligning structure is connected on the truck body support; the feeding and discharging unit comprises an outer ring and a sealing tail cover, the circumferential inner wall of the outer ring is rotatably connected with the circumferential outer wall of the inner ring, the sealing tail cover is arranged on the outer ring, a gap exists between one end face of the sealing tail cover close to the inner ring and the outer ring and the end face of the inner ring, at least 1 sealing element is arranged in the gap, and an adjusting rod used for preventing the sealing element from being excessively extruded is inserted on one end face of the outer ring close to the sealing tail cover along the radial direction. The utility model plays the role of automatic aligning through the floating aligning mechanism; the abnormal sound caused by the excessive fitting between the inner ring and the outer ring is prevented, so that the potential safety hazard of operation is prevented; the circumferential movement of the outer ring can be stopped; and the damage to the sealing element can be prevented, and the service life of the device is prolonged.

Description

Feeding and discharging device of mining mixer truck

Technical Field

The utility model relates to a trucd mixer field, more specifically relates to a mining trucd mixer business turn over material device.

Background

The mining mixer truck is used for mines and tunnels, a feed inlet and a discharge mechanism (a discharge outlet and a discharge cylinder for opening the discharge mechanism) of the existing mixer truck are integrated on a tail cover of the mixer truck, and the tail cover is used for sealing a tank body of the mixer truck to prevent the tank body from being exposed to cause evaporation or exposure of feed liquid; the inner ring is connected to a mixing drum of the vehicle body through a bolt and rotates along with the mixing drum to serve as a movable side whole; the tail cover is connected on the outer ring to form a static side whole body, so that rotary sealing is formed; after the tail cover is covered, a gap exists between the tail cover and the inner ring, and the feeding and discharging sealing is mainly matched and sealed on the inner ring of the tank body by the sealing ring on the inner side of the tail cover. Due to manufacturing tolerance or deformation of the mixing drum during no-load and full-load, or displacement of the inner ring during rotation of the inner ring, the axial leads of the inner ring and the outer ring are not coincident, if the outer ring cannot be adjusted to follow the inner ring for compensation movement, the outer ring and the inner ring are excessively attached, the sealing element is excessively extruded to damage the sealing ring, the outer ring is also driven to circumferentially rotate, or abnormal sound is generated to damage the slewing device; in the prior art, after the end cover and the sealing slip ring are worn, the extruded O-shaped rubber ring can compensate the clearance generated by friction through elastic deformation, so that the fitting degree of the sealing element and the end cover is ensured; but the sealing slip ring can not be protected, and the slip ring still needs to be replaced after long-term use; the floating circumferential stopping mechanism is used for circumferentially stopping the outer ring and preventing the outer ring from moving circumferentially; but the sealing slip ring is only used as a substitute for an abrasion product, but the sealing slip ring cannot be protected, and the slip ring still needs to be replaced after long-term use; the floating circumferential stop mechanism prevents the outer ring from circumferential rotation through the matching of the limiting groove and the protrusion, can only prevent the outer ring from being driven by the inner ring to circumferential rotation, and can not perform offset compensation on the axial lead of the outer ring, namely, the position of the outer ring can not be adjusted to compensate the displacement of the inner ring, or the outer ring and the inner ring can be partially and excessively attached to generate abnormal sound, and the sealing element can not be substantially protected, so that the sealing element is partially and excessively extruded and even damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the above-mentioned background art the axial lead to the outer lane carry out skew compensation, can not adjust the position of outer lane promptly with the displacement of compensation inner circle, still can make between outer lane and the inner circle local excessive laminating and send the abnormal sound, and can not carry out substantive protection to the sealing member, cause the problem of local excessive extrusion damage sealing member even to the sealing member, provide a mining trucd mixer feeding and discharging device. The utility model can automatically center the outer ring and prevent the outer ring and the inner ring from being partially excessively laminated to generate abnormal sound; and the gap is kept uniform, and the sealing element is prevented from being damaged due to local excessive extrusion.

In order to solve the technical problem, the utility model discloses a technical scheme is: a mining mixer truck feeding and discharging device comprises a truck body support, an inner ring used for being connected to a mixing drum, a feeding and discharging unit which is covered on the inner ring and is in rotating connection with the circumferential outer wall of the inner ring, and a floating aligning structure, wherein one end of the floating aligning structure is flexibly connected with the feeding and discharging unit, and the other end of the floating aligning structure is connected to the truck body support; the business turn over material unit includes outer lane and sealed tailcap, the circumference inner wall of outer lane with the circumference outer wall rotation of inner circle is connected, sealed tailcap is connected through the connecting bolt who distributes along its circumference on the terminal surface of outer lane, sealed tailcap is close to the terminal surface of inner circle and outer lane with there is the clearance between the terminal surface of inner circle, be equipped with 1 at least sealing member in the clearance, the outer lane is close to radially insert on the terminal surface of sealed tailcap and be equipped with and be used for preventing the sealing member is by excessive extruded regulation pole, it is in to adjust the pole leave the bulge on the outer lane, the bulge with sealed tailcap contacts.

Furthermore, the adjusting rod is an adjusting screw rod, the rod part of the adjusting screw rod is in threaded connection with one end face, close to the sealing tail cover, of the outer ring, the protruding part of the adjusting screw rod is a cap end of the adjusting screw rod, and the cap end of the adjusting screw rod is in contact with the sealing tail cover

Furthermore, at least 3 positioning holes are radially arranged on the outer ring, the positioning holes are uniformly distributed on one end face, close to the sealing tail cover, of the outer ring, internal threads matched with the adjusting screw rods are arranged in the positioning holes, and the adjusting screw rods are in threaded connection with the positioning holes of the outer ring.

Furthermore, the adjusting device further comprises an adjusting spring, wherein the adjusting spring is sleeved on the rod part of the connecting bolt, one end of the adjusting spring is in contact with one end face of the sealing tail cover back to the outer ring, and the other end of the adjusting spring is in contact with the cap end of the connecting bolt.

Preferably, the number of the sealing elements is 3, 3 sealing grooves are formed in the end face, close to the inner ring, of the sealing tail cover, and the sealing elements are embedded into the sealing grooves respectively.

Further, unsteady aligning structure is including being located the arc support column and the fixed connection of automobile body support both sides are in crossbeam on the sealed tailcap both sides, the arc support column is located the outside of sealed tailcap both sides, crossbeam one end fixed connection be in sealed tailcap is back of the body upper end, the other end of inner circle with the arc support column passes through the swing joint and connects.

Further, the movable joint includes the round pin axle and sets up respectively the crossbeam with pinhole on the arc support post relative position, the round pin axle is mobile in proper order to be worn to establish in the crossbeam with in the pinhole on the arc support post relative position, the internal diameter size of pinhole is greater than the external diameter size of round pin axle, the round pin axle is worn out the locating part is still installed to the one end of pinhole on the arc support post, the locating part with there is the interval between the lower terminal surface of arc support post.

Furthermore, the pin hole is a waist-shaped hole, and the length and the width of the waist-shaped hole are both larger than the outer diameter of the pin shaft.

Furthermore, the floating aligning structure is connected respectively the outer lane is close to the elastic compensation subassembly on the both sides of automobile body support one end, the elastic compensation subassembly is including supporting support, resetting means and support, it connects to support the circumference outer wall of outer lane is last, the support mounting is in on the automobile body support, resetting means one end is connected support, the other end is connected the support.

Preferably, the return means is a spring.

Compared with the prior art, the beneficial effects are:

the utility model can drive the outer ring to perform displacement compensation when the inner ring is relatively deviated from the outer ring through the flexible connection effect of the movable joint in the floating aligning mechanism, so that the inner ring and the outer ring are basically concentric to play a role of automatic aligning; the abnormal sound caused by excessive fitting between the inner ring and the outer ring is prevented, the inner ring and the outer ring are damaged, and the potential safety hazard of operation is prevented; the circumferential movement of the outer ring can be stopped; the adjusting rods are additionally arranged to abut against the sealing tail cover, the adjusting rods which are uniformly distributed keep the gap balance, the gap balance between the sealing tail cover and the inner ring can be adjusted, the sealing element is prevented from being damaged due to local excessive extrusion, and the sealing element is further protected; the utility model discloses can play the guard action to whole business turn over material mouth slewer, guarantee operation safety, extension fixture's life.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is a schematic view of the self-aligning structure in embodiment 1.

FIG. 3 is a schematic view of the structure of the movable joint in example 1.

Fig. 4 is a schematic structural view of the exterior of the feeding and discharging unit in embodiment 1.

FIG. 5 is a schematic view showing the structure of embodiment 1 without a hermetic seal cover.

Fig. 6 is a schematic view of the structure at the gap in embodiment 1.

FIG. 7 is a schematic structural view of embodiment 2.

Fig. 8 is a schematic view of the structure at the elasticity compensating block in embodiment 2.

FIG. 9 is a schematic structural view of embodiment 3.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", "long", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but it is not intended to indicate or imply that the devices or elements being referred to must have specific orientations, be constructed and operated in specific orientations, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations on the present patent, and the specific meanings of the terms will be understood by those skilled in the art according to specific situations.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

As shown in fig. 1, the feeding and discharging device for the mining mixer truck comprises a truck body support 212, an inner ring 101 used for being connected to a mixing drum 109, a feeding and discharging unit 200 which is covered on the inner ring 101 and is rotatably connected with the circumferential outer wall of the inner ring 101, and a floating aligning structure, wherein one end of the floating aligning structure is flexibly connected with the feeding and discharging unit 200, and the other end of the floating aligning structure is connected to the truck body support 212; as shown in fig. 4 to 6, the material inlet and outlet unit 200 includes an outer ring 102 and a seal tail cover 103, a circumferential inner wall of the outer ring 102 is rotatably connected with a circumferential outer wall of the inner ring 101, the seal tail cover 103 is connected to an end surface of the outer ring 102 by connecting bolts 107 distributed along a circumferential direction thereof, a gap 104 is present between an end surface of the seal tail cover 103 close to the inner ring 101 and the outer ring 102 and an end surface of the inner ring 101, 3 sealing members 105 are disposed in the gap 104, an adjusting rod 106 for preventing the sealing members 105 from being excessively pressed is radially inserted on an end surface of the outer ring 102 close to the seal tail cover 103, and a protruding portion of the adjusting rod 106 is left on the outer ring 102 and contacts with the seal tail cover 103. The end face, close to the inner ring 101, of the seal tail cover 103 is provided with 3 seal grooves corresponding to the 3 seal elements 105, and the seal elements 105 are respectively embedded in the seal grooves; the inner ring 101 is connected to a mounting flange 110 of the mixing drum 109 through bolts 112 of the inner ring 101, and a gasket 111 is further arranged between the mounting flange 110 and the inner ring 101. as shown in fig. 6, in order to prevent the bolts 112 of the inner ring 101 from interfering with the sealing member 105, in the embodiment, the bolts 112 of the inner ring 101 are inserted into the end surface of the inner ring 101 from the mixing drum side in the radial direction, and do not penetrate through the other end surface of the inner ring 101.

The adjusting rod 106 is an adjusting screw, the rod part of the adjusting screw is in threaded connection with one end surface of the outer ring 102 close to the sealing tail cover 103, the protruding part of the adjusting screw is the cap end of the adjusting screw, and the cap end of the adjusting screw is in contact with the sealing tail cover 103.

The outer ring 102 is provided with 6 positioning holes along the radial direction, the positioning holes are uniformly distributed on one end face of the outer ring 102 close to the sealing tail cover 103, internal threads matched with the adjusting screw are arranged in the positioning holes, and the adjusting screw is in threaded connection with the positioning holes of the outer ring 102; in other embodiments, the number of the positioning holes can be more, so that the balance adjusting effect is better, and for the convenience of arrangement and the saving principle, the number is generally set to 4 or 6.

In the turning device of the mixer truck, after the sealing tail cover 103 is covered, a gap 104 exists between the inner end surface of the sealing tail cover 103 and the inner ring 101, and a certain distance also exists between the inner end surface of the sealing tail cover 103 and the outer ring 102, so that the gap 104 for placing the sealing piece 105 is kept between the inner ring 101 and the tail cover 103, and a certain adjusting space is kept when the connecting bolt 107 is connected with the sealing tail cover 103 and the outer ring 102, therefore, the distance between the sealing tail cover 103 and the outer ring 102 cannot be directly filled by changing the thickness of the outer ring 102.

In the case of not additionally providing the adjusting rod 106, if the connecting bolt 107 is excessively screwed when the seal tail cover 103 and the outer ring 102 are connected, the sealing member 105 may be excessively pressed, so that the sealing member 105 is quickly damaged; the seal 105 needs to be often made worse. During the process that the inner ring 101 rotates along with the mixing drum 109, the mixing drum 109 deforms when being unloaded and fully loaded, so that the position of the inner ring 101 is deviated, the gap 104 is unbalanced, and the sealing element 105 is damaged due to local overpressure.

In the present embodiment, after the adjusting rod 106 is additionally provided, the balance of the sealing gap 104 can be maintained, and the key point of the present embodiment is that a circle of adjusting screw is additionally provided on the end surface of the outer ring 102, since the protruding portion (cap end) of the adjusting screw can rigidly abut against the sealing tail cover 103, the connecting bolt 107 is prevented from being screwed too tightly to cause the sealing tail cover 103 to excessively extrude the sealing member 105, and the adjusting screw is uniformly distributed on the outer ring 102, which can play a role in maintaining the balance and uniformity of the gap 104, thereby preventing the sealing member 105 from being excessively extruded and damaged, reducing the number of times of replacing the sealing member 105, and preventing slurry leakage due to the damage of the sealing member 105.

As shown in fig. 1 to fig. 3, the floating self-aligning structure includes arc-shaped supporting columns 201 located at two sides of a vehicle body support 212 and cross beams 202 fixedly connected to two sides of the sealing tail cover 103, the arc-shaped supporting columns 201 are located outside two sides of the sealing tail cover 103, one end of the cross beam 202 is fixedly connected to an end surface of the sealing tail cover 103, which is back to the inner ring 101, and the other end is connected with the arc-shaped supporting columns 201 through movable joints 203; the movable joint 203 comprises a pin shaft 204 and pin holes 205 respectively formed in the opposite positions of the cross beam 202 and the arc-shaped support column 201, the pin shaft 204 is sequentially movably arranged in the pin holes 205 in the opposite positions of the cross beam 202 and the arc-shaped support column 201 in a penetrating manner, the inner diameter of each pin hole 205 is larger than the outer diameter of each pin shaft 204, one end of each pin shaft 204 penetrating through the corresponding pin hole 205 in the arc-shaped support column 201 is further provided with a limiting part 206, and a distance exists between each limiting part 206 and the lower end face of the arc-shaped support column 201. The pin hole 205 is a waist-shaped hole, and the length and the width of the waist-shaped hole are both larger than the outer diameter of the pin shaft 204.

In this embodiment, the left and right sides of the rear end of the vehicle body bracket 212 are provided with fixed arc-shaped support columns 201, and the opening of the mixing drum 109, the inner ring 101 and the feeding and discharging unit 200 are all positioned between the two arc-shaped support columns 201; the inner ring 101 is fixed on the opening of the mixing drum 109 through a connecting flange, rotates along with the mixing drum 109 and serves as a movable end in the revolving device; the material inlet and outlet unit 200 is covered on the inner ring 101 as a fixed whole to seal the mixing drum 109 and prevent the evaporation of water and the leakage of slurry; when the material inlet and outlet unit 200 does not rotate and serves as a fixed end and the inner ring 101 serves as a movable end to rotate around the axis of the outer ring 102 relative to the mixing drum 109, the sealing tail cover 103 seals the opening of the inner ring 101 through the arranged sealing element to prevent slurry leakage; a feed hopper 115 and a discharge mechanism 116 (typically a discharge port, a discharge cover and a discharge cylinder) of the mixer truck are both arranged on the charging and discharging unit 200; this is the prior art and is not described in detail.

Under the ideal condition, the axial leads of the inner ring 101 and the outer ring 102 are basically coincident, so that excessive bonding and friction damage of the inner ring 101 and the outer ring 102 cannot be caused, abnormal sound is generated, even the rotary device is damaged, and the sealing element cannot be locally and excessively extruded because the inner ring 101 does not deviate relative to the outer ring 102; however, the position of the inner ring 101 is shifted due to some deformation of the mixing drum in the two states of no load and full load, and the outer ring 102 can be compensated by following the shift of the inner ring 101 by adopting the scheme in the embodiment. The specific action principle is as follows: one end of the beam 202 is fixedly connected to the seal tail cover, and the other end is flexibly connected (the flexible connection refers to movement or deformation compensation within a certain range) to the arc-shaped support column 201; the flexible connection is mainly realized by the movable joint 203 with the direction of the vehicle head as the front, and in the movable joint 203, the pin 204 has a certain movable space in the up-down direction due to the spacing between the limiting part 206 of the pin 204 and the lower end surface of the arc-shaped support column 201; in addition, the inner diameter of the pin shaft 204 is smaller than the length and width of the waist-shaped hole, so that the pin shaft 204 is not completely constrained in the waist-shaped hole, and the pin shaft 204 can move a certain distance back and forth and left and right in the waist-shaped hole, so that the cross beam 202 has a certain moving space in the up-down, left-right and front-back directions; and sealed tail-hood 103 is fixed connection crossbeam 202, outer lane 102 and sealed tail-hood 103 connect into a whole through connecting bolt, whole business turn over material unit 200 is a whole, because the effect of unsteady aligning subassembly for business turn over material unit 200 is not complete immortal for inner circle 101, can float certain scope from top to bottom, front and back, left and right sides and compensate, then outer lane 102 can not be too retrained to inner circle 101, make between outer lane 102 and the inner circle 101 can not produce abnormal sound and damage slewer because of excessive laminating and friction.

In the embodiment, through the flexible connection effect of the movable joint in the floating aligning mechanism, when the inner ring 101 is relatively deviated from the outer ring 102, the outer ring 102 is driven to perform displacement compensation, so that the inner ring 101 and the outer ring 102 are basically concentric, and the automatic aligning effect is achieved; on one hand, abnormal sound caused by excessive fitting between the inner ring 101 and the outer ring 102 is prevented, the inner ring 102 and the outer ring 102 are damaged, and potential safety hazards of operation are prevented; on the other hand, the gap between the sealing tail cover and the inner ring 101 is prevented from being unbalanced, the sealing element is damaged due to local excessive extrusion, the adjusting rods are additionally arranged to abut against the sealing tail cover, the uniformly distributed adjusting rods keep the gap balance, and the sealing element is further protected; this embodiment can play the guard action to whole business turn over material mouth slewer, guarantees the operation safety, the life of extension fixture.

Example 2

This example is similar to example 1, except that:

as shown in fig. 7 and 8, in the present embodiment, the floating self-aligning structure is an elastic compensation assembly 207 respectively connected to two sides of one end of the outer ring 102 close to a vehicle body bracket 212, the elastic compensation assembly 207 includes a support bracket 208, a reset device 209 and a support 210, the support bracket 208 is connected to a circumferential outer wall of the outer ring 102, the support 210 is mounted on the vehicle body bracket 212, one end of the reset device 209 is connected to the support bracket 208, and the other end is connected to the support 210; the return means 209 is a spring.

As an alternative to the floating aligning structure, the elastic compensation assembly 207 supports the entire feeding and discharging unit 200 in the vertical direction, and it can automatically align the outer ring 102 and the entire feeding and discharging unit 200 by the vertical elastic force action of the spring and the flexibility of the spring in the front-rear and left-right directions, and also can stop the circumferential movement of the outer ring 102 due to the circumferential limiting action of the support bracket 208.

Example 3

This example is similar to example 1, except that:

as shown in fig. 9, in the present embodiment, the material inlet and outlet unit 200 further includes an adjusting spring 113, the adjusting spring 113 is sleeved on the rod portion of the connecting bolt 107, and one end of the adjusting spring 113 contacts with an end surface of the sealing tail cover 103 facing away from the outer ring 102, and the other end contacts with the cap end of the connecting bolt 107.

The adjusting spring 113 is used for adjusting the balance of the gap 104, and can play a certain role in buffering and compensating the abrasion amount of the sealing element 105 when the connecting bolt 107 is excessively tightened or the position of the inner ring 101 is slightly deviated; in actual use, all the connecting bolts 107 provided with the adjusting springs 113 may be all or part of the connecting bolts 107, and all the connecting bolts 107 provided with the adjusting springs 113 are uniformly distributed to achieve the effect of adjusting the gap balance.

Example 4

This example is similar to example 3, except that:

in this embodiment, the adjusting screw 107 is removed and replaced by an adjusting spring 113, the adjusting spring 113 is sleeved on the rod portion of the connecting bolt 107, as shown in fig. 4, one end of the adjusting spring 113 contacts with one end surface of the sealing tail cover 103 back to the outer ring 102, and the other end contacts with the cap end of the connecting bolt 107. The wear amount of the sealing member 105 can be automatically compensated only by the adjustment spring 113, thereby preventing cement mortar or concrete from leaking, and having a function of adjusting the balance of the sealing gap 104.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The mining mixer truck feeding and discharging device is characterized by comprising a truck body support (212), an inner ring (101) used for being connected to a mixing drum (109), a feeding and discharging unit (200) which is covered on the inner ring (101) and is in rotating connection with the circumferential outer wall of the inner ring (101), and a floating aligning structure, wherein one end of the floating aligning structure is flexibly connected with the feeding and discharging unit (200), and the other end of the floating aligning structure is connected to the truck body support (212);

the material inlet and outlet unit (200) comprises an outer ring (102) and a sealing tail cover (103), the circumferential inner wall of the outer ring (102) is rotationally connected with the circumferential outer wall of the inner ring (101), the sealing tail cover (103) is connected to one end surface of the outer ring (102) through connecting bolts (107) distributed along the circumferential direction of the sealing tail cover, a gap (104) exists between one end face of the sealing tail cover (103) close to the inner ring (101) and the outer ring (102) and the end face of the inner ring (101), at least 1 sealing element (105) is arranged in the gap (104), an adjusting rod (106) used for preventing the sealing element (105) from being excessively extruded is inserted on one end surface of the outer ring (102) close to the sealing tail cover (103) along the radial direction, the adjusting rod (106) is provided with a protruding part on the outer ring (102), and the protruding part is in contact with the sealing tail cover (103).

2. The mining mixer truck feeding and discharging device according to claim 1, wherein the adjusting rod (106) is an adjusting screw, the rod part of the adjusting screw is in threaded connection with one end surface of the outer ring (102) close to the sealing tail cover (103), the protruding part of the adjusting screw is the cap end of the adjusting screw, and the cap end of the adjusting screw is in contact with the sealing tail cover (103).

3. The mining mixer truck feeding and discharging device according to claim 2, characterized in that at least 3 positioning holes are radially formed in the outer ring (102), the positioning holes are uniformly distributed on one end face of the outer ring (102) close to the sealing tail cover (103), internal threads matched with the adjusting screw are formed in the positioning holes, and the adjusting screw is in threaded connection with the positioning holes of the outer ring (102).

4. The mining mixer truck feeding and discharging device according to claim 2, further comprising an adjusting spring (113), wherein the adjusting spring (113) is sleeved on the rod portion of the connecting bolt (107), one end of the adjusting spring (113) is in contact with one end face, back to the outer ring (102), of the sealing tail cover (103), and the other end of the adjusting spring is in contact with the cap end of the connecting bolt (107).

5. The mining mixer truck feeding and discharging device according to claim 1, wherein the number of the sealing elements (105) is 3, 3 sealing grooves are formed in the end face, close to the inner ring (101), of the sealing tail cover (103), and the sealing elements (105) are embedded in the sealing grooves respectively.

6. The mining mixer truck feeding and discharging device according to claim 1, wherein the floating aligning structure comprises arc-shaped supporting columns (201) located on two sides of the truck body support (212) and cross beams (202) fixedly connected to two sides of the sealing tail cover (103), the arc-shaped supporting columns (201) are located outside two sides of the sealing tail cover (103), one end of each cross beam (202) is fixedly connected to one end face, back to the inner ring (101), of the sealing tail cover (103), and the other end of each cross beam is connected with the arc-shaped supporting columns (201) through movable joints (203) arranged on the end face.

7. The mining mixer truck feeding and discharging device according to claim 6, wherein the movable joint (203) comprises a pin shaft (204) and pin holes (205) respectively formed in opposite positions of the cross beam (202) and the arc-shaped supporting column (201), the pin shaft (204) sequentially and movably penetrates through the pin holes (205) in opposite positions of the cross beam (202) and the arc-shaped supporting column (201), the inner diameter of each pin hole (205) is larger than the outer diameter of the pin shaft (204), a limiting part (206) is further installed at one end, penetrating out of the pin holes (205) in the arc-shaped supporting column (201), of the pin shaft (204), and a distance exists between the limiting part (206) and the lower end face of the arc-shaped supporting column (201).

8. The mining mixer truck feeding and discharging device according to claim 7, characterized in that the pin hole (205) is a kidney-shaped hole, and the length and width of the kidney-shaped hole are both larger than the outer diameter of the pin shaft (204).

9. The mining mixer truck feeding and discharging device according to claim 1, wherein the floating aligning structure is an elastic compensation assembly (207) respectively connected to two sides of one end of the outer ring (102) close to the truck body bracket (212), the elastic compensation assembly (207) comprises a support bracket (208), a reset device (209) and a support (210), the support bracket (208) is connected to the circumferential outer wall of the outer ring (102), the support (210) is installed on the truck body bracket (212), one end of the reset device (209) is connected to the support bracket (208), and the other end of the reset device (209) is connected to the support (210).

10. The mining mixer truck feeding and discharging arrangement according to claim 9, characterized in that the return means (209) is a spring.

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