CN218286146U

CN218286146U - Rotary sealing structure for tail cover of mixer truck

Info

Publication number: CN218286146U
Application number: CN202222436488.5U
Authority: CN
Inventors: 郭建民; 赵磊; 刘志辉
Original assignee: Tyan Public Lok Machinery Manufacturing Co ltd
Current assignee: Tyan Public Lok Machinery Manufacturing Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-13
Anticipated expiration: 2032-09-15

Abstract

The utility model relates to a rotary seal structure for trucd mixer tail-hood, including a jar body, jar body seal lid subassembly and rotary seal device, jar mouthful department rigid coupling of the jar body has a jar mouthful flange, and the outside rigid coupling of jar mouthful flange has the straight section of pipy jar mouthful, rotary seal device includes wear-resisting bush and overlaps the gyration support at the straight section outer lane of jar mouthful, and the terminal surface and jar mouthful flange joint of outer lane are supported in the gyration, and the terminal surface and jar body seal lid subassembly of gyration support inner circle are connected, wear-resisting bush is including the laminating flange portion in jar mouthful flange outside and the wear-resisting cover portion of laminating at jar mouthful straight section outer lane, the gyration is supported and is equipped with radial seal circle subassembly between the outer lane of inner circle and wear-resisting cover portion, through changing sealing washer slot position, sets up the sealing washer in the gyration is supported the inner circle, makes to form radial seal between the wear-resisting cover outside sealing washer and the straight section of jar mouthful, and radial seal is applicable to revolve the rotation seal, can extremely slow down the wear rate of sealing member.

Description

Rotary sealing structure for tail cover of mixer truck

Technical Field

The utility model relates to a trucd mixer field especially involves trucd mixer tail-hood field, specifically indicates a rotary seal structure for trucd mixer tail-hood.

Background

The mine mixer truck is a transport truck widely used in mines and tunnels, and the height of the whole truck of the mixer truck is strictly limited due to the limitation of the height of the tunnels. The reduction of the whole vehicle height determines that the inclination angle of the stirring tank is not too large, and some manufacturers even keep the tank body flat. The reduction of the inclination angle greatly limits the effective volume of the tank body, so that the effective volume of the mining mixer truck is improved mostly in a tail cover sealing mode, and meanwhile, the evaporation of concrete moisture can be reduced through a sealed tail gate, and the transportation quality is improved.

The utility model patent of application number 202010181209.8 discloses a churn business turn over material mouth rotary seal's technique, and this technique adopts the mode that sets up the sealing member at sealed lid and rotary support inner circle outer end face between to prevent the medium from revealing, and the sealing member adopts the mode of O type circle. The sealing mode belongs to end face sealing, and the end face sealing mode is mostly used for static sealing, but because the rotation of the tank body and the relative rotation between the rotary supporting inner ring and the sealing cover exist, the sealing mode belongs to the category of dynamic sealing. Therefore, the design scheme can cause severe abrasion of the sealing element, and when the elastic compensation quantity of the O-shaped ring cannot offset the rapid abrasion quantity, leakage can occur, so that the service life of the O-shaped ring is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, provide a rotary seal structure for trucd mixer tail-hood.

The utility model discloses a through following technical scheme realization, provide a rotary seal structure for trucd mixer tail-hood, including jar body and jar body seal cover subassembly, the jar mouth department rigid coupling of the jar body has a jar mouth flange, and the outside rigid coupling of jar mouth flange has the straight section of pipy jar mouth, jar body and jar body seal cover subassembly pass through rotary seal device and connect, rotary seal device includes wear-resisting bush and the gyration of cover in the straight section outer lane of jar mouth and supports, and the terminal surface of gyration support outer lane passes through outer lane connecting bolt and jar mouth flange joint, and the terminal surface of gyration support inner circle passes through inner circle connecting bolt and is connected with jar body seal cover subassembly, wear-resisting bush is including laminating flange dish portion in the jar mouth flange outside and the wear-resisting cover portion of laminating in jar mouth straight section outer lane, the gyration is supported and is equipped with radial seal circle subassembly between the outer lane of inner circle and wear-resisting cover portion.

The gyration in this scheme is supported and has been realized jar body and jar rotation of the sealed lid subassembly of body and be connected, there is the straight section of pipy jar mouth through rigid coupling in jar mouthful flange outside, make the gyration support cover at the outer lane of the straight section of jar mouth, the outer lane laminating of the straight section of jar mouth is fixed with the wear-resisting cover portion of wear-resisting bush, and be equipped with radial seal circle subassembly between the outer lane of gyration support inner circle and wear-resisting cover portion, make the gyration support inner circle and jar mouth form radial seal between the straight section, improve sealed effect

Preferably, the radial seal ring assembly comprises a first radial seal ring and a second radial seal ring, and a first radial seal groove for accommodating the first radial seal ring and a second radial seal groove for accommodating the second radial seal ring are formed in the inner hole of the rotary support inner ring. Radial seal circle subassembly in this scheme includes first radial seal circle and second radial seal circle to improve sealed effect through twice sealing washer, prevented that the concrete medium from supporting the gap between inner circle and the wear-resisting bush from the gyration and revealing

Preferably, a first end face sealing ring is arranged between the tank body sealing cover assembly and the end face of the rotary support inner ring. The first end face sealing ring in the scheme forms end face sealing, and the rotary support inner ring and the tank sealing cover component do not rotate relatively, so that the end face sealing belongs to static sealing, and the sealing ring prevents a concrete medium from leaking from a gap between the outer end face of the rotary support inner ring and the tank sealing cover component.

And optimally, a second end face sealing ring is arranged between the tank opening flange and the flange disc part of the wear-resistant lining. The second end face sealing ring and the outer end face of the tank opening flange form end face sealing together, and the wear-resistant bushing flange part and the tank opening flange do not rotate relatively, so that the end face sealing belongs to static sealing, and the sealing ring prevents a medium from leaking from a gap between the wear-resistant bushing flange part and the tank opening flange.

And optimally, a first bearing sealing rubber strip and a second bearing sealing rubber strip are respectively arranged at two ends of the connecting surface of the rotary support outer ring and the rotary support inner ring. In the scheme, bearing sealing rubber strips are respectively arranged on two sides of the rotary supporting track, so that the pollution of a concrete medium to the rotary supporting track is prevented, lubricating grease is sealed in the track, the lubrication of the rotary supporting is guaranteed, and the driving moment of the stirring tank is reduced.

Preferably, the straight section of the tank opening is fixedly connected with the inner ring outside the flange of the tank opening. Jar mouthful straight section rigid coupling makes inside material directly pour at the inner circle in jar mouthful flange outside in this scheme, prevents that the material from piling up.

Preferably, the tank sealing cover assembly comprises a sealing cover plate and a feeding hopper arranged on the outer side of the sealing cover plate, a discharging port is formed in the sealing cover plate, and the end face of the rotary support inner ring is connected with the sealing cover plate. The material gets into jar body from the feeding hopper in, unloads from the discharge gate.

Preferably, the outer ring connecting bolt penetrates through a flange part of the wear-resistant bushing. In the scheme, the outer ring connecting bolt penetrates through the flange part of the wear-resistant lining, so that the whole wear-resistant lining is fixed.

The beneficial effects of the utility model are that: the utility model discloses a rotary seal structure for trucd mixer tail-hood through changing sealing washer slot position, supports the inner circle with the sealing washer setting in the gyration, makes to form radial seal between the outer wear-resisting cover of the straight section of sealing washer and jar mouth, and radial seal is applicable to the rotary seal, can greatly slow down the wearing and tearing speed of sealing member. The wear-resistant sleeve arranged outside the straight section of the tank opening is matched to further slow down the wear speed of the sealing element, and the service life of the sealing element is greatly prolonged. The sealing end cover is connected with the rotary support inner ring and the rotary support outer ring and the tank opening flange through bolts, so that the rotary support inner ring and the rotary support outer ring are convenient to detach and maintain, and worn sealing elements are replaced. The wear-resisting bush also can be dismantled and changed, has reduced the use maintenance cost in later stage. The whole feeding and discharging sealing device is arranged on the tank body through a rotary support and is not connected with the frame. Therefore, the device can float up and down along with the whole tank body in the transportation process, and the phenomenon that the rotary support is blocked due to the fact that the inner ring and the outer ring are not concentric is avoided.

Drawings

FIG. 1 is a schematic side view of the overall structure of the present invention;

FIG. 2 is a rear schematic view of the overall structure of the present invention;

FIG. 3 is a partially enlarged view of the rotary seal apparatus of the present invention;

FIG. 4 is an enlarged view of a portion of the rotary seal apparatus of the present invention;

FIG. 5 is a schematic view of a tank opening flange of the present invention;

FIG. 6 is a schematic view of a canister seal cap assembly of the present invention;

shown in the figure:

1. a rotary sealing device; 2. a tank body; 3. a can body seal cap assembly; 4. a door opening oil cylinder; 5. a discharge door; 6. a floating circumferential stop pin shaft; 7. the outer ring is connected with a bolt; 8. the inner ring is connected with a bolt; 101. a slewing support outer ring; 102. a rotary support inner ring; 103. a wear-resistant bushing; 104. a rail ball; 105. a first radial seal groove; 106. a second radial seal groove; 107. a first end face sealing groove; 108. a second end face seal groove; 109. a first radial seal ring; 110. a second radial seal ring; 111. a first end face seal ring; 112. a second end face sealing ring; 113. a first bearing joint strip; 114. a second bearing sealing rubber strip; 201. a tank opening flange; 202. a straight section of the tank opening; 301. a feed hopper; 302. a discharge port; 303. and sealing the cover plate.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1 to 6, the utility model discloses a rotary seal structure for trucd mixer tail-hood, including jar body 2 and jar body sealed lid subassembly 3, the jar mouth department rigid coupling of jar body 2 has jar mouth flange 201, and jar mouth flange 201 is annular plane flange board, and jar mouth flange 201 is welded together with jar body 2, and the outside rigid coupling of jar mouth flange 201 has the straight section 202 of pipy jar mouth, and the straight section 202 rigid coupling of jar mouth is at the inner circle in jar mouth flange 201 outside in this embodiment, and the axis of jar mouth straight section 202 is perpendicular with jar mouth flange 201.

The tank body 2 is connected with the tank body sealing cover assembly 3 through the rotary sealing device 1, the rotary sealing device 1 comprises a wear-resistant bushing 103 and a rotary support sleeved on an outer ring of a tank opening straight section 202, the rotary support comprises a rotary support outer ring 101, a rotary support inner ring 102 and a track ball 104, the rotary support outer ring 101, the rotary support inner ring 102 and the track ball 104 are used as an integral assembly, the track ball 104 and a retainer connect the rotary support outer ring 101 and the rotary support inner ring 102 together, and the inner ring and the outer ring can rotate freely.

And a first bearing sealing rubber strip 113 and a second bearing sealing rubber strip 114 are respectively arranged at two ends of the connecting surface of the rotary support outer ring 101 and the rotary support inner ring 102. Thereby protect track ball 104 to avoid the concrete dirt, sealed the lubricating grease in the track simultaneously, guaranteed the lubrication of gyration support, reduced the drive moment of agitator tank.

The end face of the rotary support outer ring 101 is connected with the tank opening flange 201 through an outer ring connecting bolt 7, and the end face of the rotary support inner ring 102 is connected with the tank body sealing cover component 3 through an inner ring connecting bolt 8, so that the whole rotary sealing device 1 and the weight of the tank body sealing cover component are all supported by the tank body 2 and can jump with the tank body as a whole.

The wear-resistant lining 103 comprises a flange disc part attached to the outer side of the tank opening flange 201 and a wear-resistant sleeve part attached to the outer ring of the tank opening straight section 202, the flange disc part is an annular plane plate, the wear-resistant sleeve part is tubular, and the flange disc part and the wear-resistant sleeve part are welded together to form the annular wear-resistant lining 103, so that the cross section of the wear-resistant lining 103 is L-shaped.

The flange disc part is connected between the tank opening flange 201 and the rotary support outer ring 101, and the wear-resistant sleeve part is located between the rotary support inner ring 102 and the tank opening straight section 202. The outer ring connecting bolt 7 passes through the flange part of the wear-resistant bushing 103. Thereby realizing the fixation of the flange part, and also realizing the fixation of the wear-resistant bush 103.

And a radial sealing ring assembly is arranged between the rotary support inner ring 102 and the outer ring of the wear-resistant sleeve part. The radial seal ring assembly comprises a first radial seal ring 109 and a second radial seal ring 110, and a first radial seal groove 105 for accommodating the first radial seal ring 109 and a second radial seal groove 106 for accommodating the second radial seal ring 110 are arranged in the inner hole of the rotary support inner ring 102. The two sealing rings prevent the concrete medium from leaking outwards through the gap between the inner rotary support ring 102 and the wear-resistant bushing 103. Since the wear-resistant bushing 103 is rotating relative to the inner ring 102, the seal is a dynamic seal.

A first end face sealing ring 111 is arranged between the tank sealing cover component 3 and the end face of the rotary support inner ring 102. A first end face sealing groove 107 is formed in the outer end face of the rotary support inner ring 102, and a first end face sealing ring 111 is arranged in the first end face sealing groove, so that concrete media are prevented from leaking outwards through an end face gap between the sealing cover plate 303 and the rotary support inner ring 102, and the sealing cover plate 303 and the rotary support inner ring 102 do not rotate relatively, so that the static sealing mode is achieved.

A second end face sealing ring 112 is arranged between the tank opening flange 201 and the flange disc part of the wear-resistant bushing 103. The outer end face of the flange part of the wear-resistant bushing 103 is provided with a second end face sealing groove 108 in which a second end face sealing ring 112 is arranged, and the sealing ring prevents concrete media from leaking outwards through an end face gap between the outer end face of the flange part of the wear-resistant bushing 103 and the tank opening flange 201, and belongs to a static sealing mode because the outer end face of the flange of the wear-resistant bushing 103 and the tank opening flange 201 do not rotate relatively.

The tank sealing cover assembly 3 comprises a sealing cover plate 303 and a feeding hopper 301 arranged on the outer side of the sealing cover plate 303, wherein a discharging hole 302 is formed in the sealing cover plate 303, and the end surface of the rotary support inner ring 102 is connected with the sealing cover plate 303.

The discharge port 302 is opened and closed by a discharge door 5 controlled by a door opening cylinder 4. When the trucd mixer need feed, discharge door 5 is closed, and the material gets into the jar body from feeding hopper 301 in, realizes the stirring and the transportation of material. When discharging is required, the discharging door 5 is opened, and the material is discharged from the discharging hole 302. In the process, the leakage of concrete in the transportation process and the feeding and discharging process is avoided due to the protection of the rotary sealing device 1.

The tank sealing cover assembly 3 is provided with a floating circumferential stop pin shaft 6, and the floating circumferential stop pin shaft 6 is hinged with the upper bracket of the frame and is provided with a gap which jumps up and down. Thus, as the can 2 rotates, the can body closure assembly 3 is held against rotation by the floating peripheral stop pin 6. The specific hinge structure is not shown in detail because it is not the key point of the patent technology.

The utility model discloses a rotary sealing method:

a. a rotary support is arranged between the tank body 2 and the tank body sealing cover component 3, an outer rotary support ring 101 is connected with a tank opening flange 201 of a tank opening of the tank body 2, and an inner rotary support ring 102 is connected with the tank body sealing cover component 3, so that the rotary connection of the tank body 2 and the tank body sealing cover component 3 is realized;

b. the outer ring of the straight section 202 of the tank opening is sleeved with the rotary support by fixedly connecting the straight section 202 of the tubular tank opening to the outer side of the flange 201 of the tank opening, the wear-resistant sleeve part of the wear-resistant lining 103 is fixedly attached to the outer ring of the straight section 202 of the tank opening, and a radial sealing ring component is arranged between the inner ring 102 of the rotary support and the outer ring of the wear-resistant sleeve part, so that radial sealing is formed between the inner ring 102 of the rotary support and the straight section 202 of the tank opening, and the sealing effect is improved;

c. through setting up wear-resisting bush 103, slow down the wearing and tearing speed of sealing member, improve the life of sealing member.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a gyration seal structure for trucd mixer tail-hood, includes jar body (2) and jar sealed lid subassembly (3), its characterized in that: jar mouth department rigid coupling of the jar body (2) has a jar mouth flange (201), and the outside rigid coupling of jar mouth flange (201) has the straight section of pipy jar mouth (202), jar body (2) and jar body sealing cover subassembly (3) are connected through rotary seal device (1), rotary seal device (1) is including wear-resisting bush (103) and the gyration of cover in the straight section of jar mouth (202) outer lane is supported, and the gyration supports the terminal surface of outer lane (101) and is connected with jar mouth flange (201) through outer lane connecting bolt (7), and the gyration is supported the terminal surface of inner circle (102) and is connected with jar body sealing cover subassembly (3) through inner circle connecting bolt (8), wear-resisting bush (103) are including laminating in the flange portion in jar mouth flange (201) outside and the wear-resisting jacket portion of laminating in jar mouth straight section of jar (202) outer lane, radial seal circle subassembly is equipped with between the outer lane of gyration support inner circle (102) and wear-resisting jacket portion.

2. The rotary seal structure for a mixer truck tail cover according to claim 1, characterized in that: the radial sealing ring assembly comprises a first radial sealing ring (109) and a second radial sealing ring (110), and a first radial sealing groove (105) for accommodating the first radial sealing ring (109) and a second radial sealing groove (106) for accommodating the second radial sealing ring (110) are formed in an inner hole of the rotary support inner ring (102).

3. The rotary seal structure for a mixer truck tail cover according to claim 1, characterized in that: and a first end face sealing ring (111) is arranged between the tank body sealing cover assembly (3) and the end face of the rotary support inner ring (102).

4. The rotary seal structure for a mixer truck tail cover according to claim 1, characterized in that: and a second end face sealing ring (112) is arranged between the tank opening flange (201) and the flange disc part of the wear-resistant bushing (103).

5. The rotary seal structure for a mixer truck tailcap according to claim 1, wherein: and a first bearing sealing rubber strip (113) and a second bearing sealing rubber strip (114) are respectively arranged at two ends of the connecting surface of the rotary support outer ring (101) and the rotary support inner ring (102).

6. The rotary seal structure for a mixer truck tail cover according to claim 1, characterized in that: the tank opening straight section (202) is fixedly connected to the inner ring on the outer side of the tank opening flange (201).

7. The rotary seal structure for a mixer truck tail cover according to claim 1, characterized in that: the tank sealing cover assembly (3) comprises a sealing cover plate (303) and a feeding hopper (301) arranged on the outer side of the sealing cover plate (303), a discharging hole (302) is formed in the sealing cover plate (303), and the end face of the rotary supporting inner ring (102) is connected with the sealing cover plate (303).

8. The rotary seal structure for a mixer truck tail cover according to claim 1, characterized in that: and the outer ring connecting bolt (7) penetrates through the flange part of the wear-resistant bushing (103).