阅读说明：本技术 一种用于盾尾密封的多点密封注脂装置及方法 (Multipoint sealing grease injection device and method for shield tail sealing ) 是由 王国义 蒋宗全 蒋岿松 连逢逾 孟庆明 王成 文仁广 牟建红 陈洋洋 修春松 于 2020-04-30 设计创作，主要内容包括：本发明公开了一种用于盾尾密封的多点密封注脂装置及方法,包括电机、减速机、旋转轴、旋转叶片、凸轮盘、储物桶以及安装注脂结构；凸轮盘与旋转轴固定,凸轮盘上设置滑槽,滑槽的作用是使得柱塞泵的活动部件作往复运动；储物桶上设置进脂孔,密封脂通过进脂孔进入储物桶中；储物桶设置在安装注脂结构的上方,安装注脂结构的壁上设置若干柱塞泵安装孔,储物桶与安装注脂结构之间具有流脂通道,流脂通道一侧连向储物桶内,流脂通道的另一侧与柱塞泵的第一进脂口连通。本发明提供一种用于盾尾密封的多点密封注脂装置及方法,通过多通道供脂,相比于传统的单一通道供脂,可以确保及时补充密封腔室内损失的密封脂,保证盾尾密封安全。(The invention discloses a multipoint sealing grease injection device and method for shield tail sealing, which comprises a motor, a speed reducer, a rotating shaft, a rotating blade, a cam disc, a storage barrel and an installation grease injection structure, wherein the motor is connected with the speed reducer; the cam disc is fixed with the rotating shaft, a chute is arranged on the cam disc, and the chute is used for enabling a movable part of the plunger pump to do reciprocating motion; the storage barrel is provided with a grease inlet hole, and sealing grease enters the storage barrel through the grease inlet hole; the storing bucket sets up in the top of fat structure is annotated in the installation, sets up a plurality of plunger pump mounting holes on the wall of fat structure is annotated in the installation, and the storing bucket is annotated with the installation and is had the fat passageway that flows between the fat structure, flows in fat passageway one side even to the storing bucket, and the opposite side of the fat passageway that flows communicates with the first fat mouth that advances of plunger pump. The invention provides a multipoint sealing grease injection device and method for shield tail sealing.)

1. The utility model provides a sealed grease injection device of multiple spot for shield tail is sealed which characterized in that: comprises a motor, a speed reducer, a rotating shaft, a rotating blade, a cam disc, a storage barrel and an installation grease injection structure;

the speed reducer is connected with the motor and driven by the motor, the rotating shaft is arranged in the mounting grease injection structure and driven by the speed reducer, and the rotating blades are arranged on the rotating shaft; the cam disc is fixed with the rotating shaft, a chute is arranged on the cam disc, and the chute is used for enabling a movable part of the plunger pump to do reciprocating motion;

the storage barrel is provided with a grease inlet hole, and sealing grease enters the storage barrel through the grease inlet hole; the storing bucket sets up in the top of fat structure is annotated in the installation, sets up a plurality of plunger pump mounting holes on the wall of fat structure is annotated in the installation, and the storing bucket is annotated with the installation and is had the fat passageway that flows between the fat structure, flows in fat passageway one side even to the storing bucket, and the opposite side of the fat passageway that flows communicates with the first fat mouth that advances of plunger pump.

2. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: the motor is a variable frequency motor.

3. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: the storage barrel is provided with a cover plate.

4. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: the end part of the rotating shaft is provided with a threaded hole, and the rotating blades are fixed through nuts and gaskets after being placed.

5. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: a filter screen is arranged between the storage barrel and the installation grease injection structure.

6. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: the upper portion of installing the grease injection structure is set to be a hollow cylindrical structure, and plunger pump installation holes are formed in the side wall of the hollow cylindrical structure.

7. The multi-point sealing grease injection device for shield tail sealing according to claim 6, characterized in that: the plunger pump mounting hole is arranged on a concentric circle, and the center of the concentric circle is on the axis of the hollow cylindrical structure.

8. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: the storage barrel is connected with the installation grease injection structure through a bolt.

9. The multi-point sealing grease injection device for shield tail sealing according to claim 1, characterized in that: set up the baffle in the storing bucket, the baffle sets up in rotating vane below.

10. A multi-point sealing grease injection method for shield tail sealing, which is characterized in that the device of any one of claims 1-9 is adopted, and the method specifically comprises the following steps:

the sealing grease enters the storage barrel through the grease inlet hole, the motor rotates and drives the rotating shaft to rotate through the speed reducer, so that the rotating blade is driven to rotate, and the sealing grease in the grease storage space A is stirred;

the movable part of the plunger pump is arranged in a chute on the cam disc; the cam disc rotates, the plunger pump movable part on the grease injection structure is arranged to stretch out and draw back in the process of passing the cam, and then sealing grease in the grease storage space A enters the plunger pump through the grease flowing channel, so that multi-point sealing grease injection of the plurality of plunger pumps is realized.

Technical Field

The invention relates to the field of shield sealing, in particular to a multipoint sealing grease injection device and method for shield tail sealing.

Background

The shield machine seal mainly comprises a main bearing seal, a hinge seal and a shield tail seal, so that the isolation between the outside of the shield machine and the inside of a tunnel is ensured, and the construction safety is ensured. The failure of the shield tail seal can cause water and mud outside the tunnel to leak into the tunnel, serious safety accidents can be caused in severe cases, and the normal operation of the shield tail seal is very important.

The shield tail is sealed by welding three or four rows of steel wire brushes inside a shield tail circular steel plate, the tail ends of the steel wire brushes tightly press the outer surface of the duct piece, two or three annular chambers are formed among the shield tail, the steel wire brushes and the outer surface of the duct piece, and the annular chamber is filled with sealing grease. When the shield advances forward, the section of jurisdiction is motionless, and the steel brush is advanced along with the shield and is impeld forward and slide on the section of jurisdiction surface, and partial sealed fat is detained on the section of jurisdiction surface, and sealed fat can lose.

At present, a pneumatic grease injection pump is adopted to sequentially inject sealing grease into grease injection points on an annular cavity to compensate the loss of the sealing grease, and the annular cavity is ensured to be filled fully. With the increase of the diameter of the shield, the single-stroke grease injection amount of the selected pneumatic grease injection pump is increased (the grease injection amount in one stroke is generally 125ml, and the maximum grease injection amount is 175ml), so that the grease injection interval of grease injection points in a shield tail sealing grease injection system is increased (sometimes 5-8 min). However, sealing grease at various positions of the annular chamber is lost all the time as the shield advances, which causes untimely injection of sealing grease and sometimes failure of the shield tail seal. Therefore, the traditional pneumatic grease injection pump cannot meet the requirements, a device capable of injecting grease through multiple channels is required to be provided, grease is ensured to be injected through multiple channels simultaneously, the loss amount of the sealing grease is ensured to be within a normal range, the sealing grease lost in a sealing cavity is ensured to be injected and filled in time, and the sealing safety of the shield tail is ensured.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a multipoint sealing grease injection device and method for shield tail sealing, which can supply grease simultaneously in multiple channels, can ensure timely supplement of sealing grease lost in a sealing cavity and ensure shield tail sealing safety compared with the traditional grease supply in a single channel.

The purpose of the invention is realized by the following technical scheme:

a multipoint sealing grease injection device for shield tail sealing comprises a motor, a speed reducer, a rotating shaft, a rotating blade, a cam disc, a storage barrel and a mounting grease injection structure;

the speed reducer is connected with the motor and driven by the motor, the rotating shaft is arranged in the mounting grease injection structure and driven by the speed reducer, and the rotating blades are arranged on the rotating shaft; the cam disc is fixed with the rotating shaft, a chute is arranged on the cam disc, and the chute is used for enabling a movable part of the plunger pump to do reciprocating motion;

the storage barrel is provided with a grease inlet hole, and sealing grease enters the storage barrel through the grease inlet hole; the storing bucket sets up in the top of fat structure is annotated in the installation, sets up a plurality of plunger pump mounting holes on the wall of fat structure is annotated in the installation, and the storing bucket is annotated with the installation and is had the fat passageway that flows between the fat structure, flows in fat passageway one side even to the storing bucket, and the opposite side of the fat passageway that flows communicates with the first fat mouth that advances of plunger pump.

Preferably, the motor is a variable frequency motor.

Preferably, the storage barrel is provided with a cover plate.

As preferred mode, the rotating shaft tip sets up the screw hole, and rotating vane places the back and fixes through nut, gasket.

As preferred mode, set up the filter screen between storing bucket and the installation notes fat structure.

As preferred mode, the upper portion of installing the notes fat structure sets up to hollow cylinder structure, sets up the plunger pump mounting hole on hollow cylinder structure's the lateral wall.

Preferably, the plunger pump mounting holes are arranged on concentric circles, the centre of the concentric circles being on the axis of the hollow cylindrical structure.

Preferably, the storage barrel is connected with the mounting grease injection structure through a bolt.

As the preferred mode, set up the baffle in the storing bucket, the baffle sets up in rotating vane below.

Preferably, a sliding plate is installed in the storage bucket.

A multipoint sealing grease injection method for shield tail sealing adopts the device, and specifically comprises the following steps:

the sealing grease enters the storage barrel through the grease inlet hole, the motor rotates and drives the rotating shaft to rotate through the speed reducer, so that the rotating blade is driven to rotate, and the sealing grease in the grease storage space A is stirred;

the movable part of the plunger pump is arranged in a chute on the cam disc; the cam disc rotates, the plunger pump movable part on the grease injection structure is arranged to stretch out and draw back in the process of passing the cam, and then sealing grease in the grease storage space A enters the plunger pump through the grease flowing channel, so that multi-point sealing grease injection of the plurality of plunger pumps is realized.

The invention has the beneficial effects that: the invention provides a multipoint sealing grease injection device and method for shield tail sealing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a plunger pump according to a third embodiment of the present invention;

in the figure, 1-a movable part, 2-a first grease inlet, 3-a grease storage space B, 4-a cylinder, 5-a first channel, 6-a second channel, 7-a third channel, 8-a second grease inlet, 9-a movable part, 10-a first spring, 11-a first fixed part, 12-a second fixed part, 13-an adjusting part, 14-a fourth channel, 15-a sphere, 16-a second spring, 17-a hollow part, 18-a third fixed part, 19-a fifth channel, 20-a sixth channel, 21-a grease outlet, 22-a fourth fixed part, 23-a fifth fixed part, 24-a speed reducer, 25-a rotating shaft, 26-a cam disc, 27-a filter screen, 28-a rotating blade, 29-a fat storage space A, 30-a sliding plate, 31-a gas storage space, 32-a safety gas valve, 33-a connecting bolt, 34-a cover plate, 35-an ultrasonic sensor, 36-a gas inlet, 37-a barrel wall, 38-a fat inlet hole and 39-a plunger pump.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" should be construed broadly and include, for example, fixed connections, detachable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the presence of a first feature above or below a second feature may encompass both the first and second features being in direct contact, and also may encompass both the first and second features being in contact, not being in direct contact, but rather being in contact with another feature therebetween. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. Including a first feature being directly below and obliquely below a second feature, or simply indicating that the first feature is at a lesser elevation than the second feature, if present below, under or below the second feature.