CN211308594U

CN211308594U - Downdraft steel rail antifriction film-forming paste coating equipment

Info

Publication number: CN211308594U
Application number: CN201921739342.XU
Authority: CN
Inventors: 靳志军; 郭小军; 吕勇
Original assignee: Xi'an Kaifeng Railway Mechanical And Electrical Equipment Co ltd
Current assignee: Xi'an Kaifeng Railway Technology Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-08-21
Anticipated expiration: 2029-10-17

Abstract

The utility model provides a downdraft rail antifriction film forming paste coating equipment, including antifriction film forming paste staving, plunger pump device, coating plate subassembly, hasp, bung, center pin, pressure disk, sealing washer subassembly and compression spring: the center of the barrel cover is rotationally connected with the central shaft; the upper end of the central shaft is fixedly connected with a handle; the lower end of the central shaft is slidably matched with a guide sleeve of an inverted T-shaped structure fixedly connected with the pressure plate; a compression spring is pressed between the pressure plate and the barrel cover; the bottom of the central shaft is screwed with the variable nut, the upper end surface of the variable nut is provided with a positioning lug, and the positioning lug is in convex-concave fit with the limiting clamping groove at the bottom of the guide sleeve to limit the rotation of the variable nut; the central shaft body is provided with a lower limiting piece and an upper limiting piece; the bottom end of the central shaft is provided with a T-shaped air passage; the guide sleeve body is provided with axisymmetric horizontal air holes which are communicated with the T-shaped air passage in a break-make mode. The utility model is suitable for a downdraft goes out cream coating and uses, prevents the air suction, and pressure disk and lotion separation easy operation are convenient, economical and practical.

Description

Downdraft steel rail antifriction film-forming paste coating equipment

Technical Field

The utility model belongs to a lubricated for antifriction auxiliary assembly technical field of railway track, concretely relates to downdraft rail antifriction film forming paste coating equipment.

Background

At present, in auxiliary equipment for coating antifriction film-forming paste on a rail, the company provides a technical scheme of direct-current intelligent coating equipment with the publication number of CN 105644583A. This technical scheme is in practical application, because the plunger pump is installed in grease bin bottom fixed position, receive antifriction film-forming cream grease-condensing state influence, do not possess liquid self-flowing performance, therefore near the plunger pump suction inlet film-forming cream in case evacuated, the difficult landing of self-sliding of upper end grease-condensing state antifriction cream gathering, often lead to the suction-type plunger pump suction inlet air-suction to appear, to this, need artifical constantly to scrape the antifriction cream of pressure, just can guarantee the continuous suction and the supply use of antifriction cream, complex operation is hard. Therefore, in the prior art, although a technical scheme that the paste body is automatically scraped and pressed by a spring pressure plate through the release of spring tension is adopted, the technical scheme is still unsolved, how to adopt a reliable and simple mechanical structure, and when the anti-abrasion paste body needs to be supplemented, the simpler mechanical structure is used, the vacuum adsorption state between the pressure plate and the paste body is broken, the pressure plate and the paste body are separated easily and laborsavingly, and the following improved technical scheme is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a downdraft rail antifriction film forming paste coating equipment of tape pressure dish, solves the technical problem that the downdraft plunger pump film forming paste coating equipment pressure dish that prevents the air suction through the spring pressure dish under the prior art is difficult for separating between the film forming paste.

The utility model adopts the technical proposal that: downdraft rail antifriction film forming cream coating equipment, including antifriction film forming cream staving, plunger pump device, coating plate subassembly, hasp, bung, center pin, pressure disk, sealing washer subassembly and compression spring: the plunger pump device is fixedly arranged at the bottom of the barrel body; the central shaft vertically penetrates through the center of the barrel cover and is rotatably connected with the center of the barrel cover; the upper end of the central shaft extends out of the barrel cover and is fixedly connected with a handle for rotating the central shaft; the lower end of the central shaft extends into the inner bottom of the barrel body and is axially slidably displaced to be matched with the guide sleeve; the longitudinal section of the guide sleeve body is of an inverted T-shaped structure, and the guide sleeve body penetrates through the central through hole of the pressure plate and is coaxially and fixedly connected with the pressure plate into a whole; a compression spring is pressed between the pressure plate and the barrel cover; the central shaft penetrates through the guide sleeve and extends out of the bottom of the pressure plate, an external thread is formed on the outer circumference of the bottom of the extended central shaft body, an internal thread is formed on the outer circumference of the bottom of the extended central shaft body in a screwing and matching mode through the external thread, a positioning lug protruding axially upwards into a cylindrical structure is fixedly arranged on the upper end face of a nut body of the shifting nut, and the positioning lug is in convex-concave matching with a limiting clamping groove formed in the axial bottom end of the guide sleeve body to; a lower limiting piece is sleeved on the central shaft body below the variable nut; the lower limiting piece consists of a plurality of gaskets sleeved outside the bottom end of the central shaft body and a bayonet I horizontally and fixedly arranged below the gaskets and horizontally penetrating through the bottom end of the central shaft body; an upper limiting part is fixedly arranged on the upper rod body of the central shaft below the barrel cover; the upper limiting piece is a clamping pin II; the axial bottom end of the central shaft is provided with a T-shaped air passage; the guide sleeve body is provided with axisymmetric horizontal air holes by taking the central shaft of the sleeve body as a symmetry axis; the T-shaped air passage is communicated or blocked with the horizontal air holes through the axial displacement of the central shaft.

Under horizontal bleeder vent and the T type air flue prerequisite that switch on in coordination, can also further adopt the mode boosting of blowing to promote the separation between pressure disk and the barrel end membrane cream, realize pulling and pulling the separation of formula on the basis more light laborsaving separation, further: the bottom of the barrel body is also provided with a one-way valve for blowing air towards the lower part of the pressure plate; the one-way valve is connected with an air source through an air transmission pipeline; and the gas transmission pipeline is provided with an electromagnetic valve.

In order to facilitate the rotation of the central shaft, the switching between the conduction or the closing of the horizontal air holes and the T-shaped air passage is realized through the axial displacement of the central shaft; the handle is particularly convenient to sense whether the air passage is communicated or not in a non-perspective way: the bottom end of the central shaft is provided with a pin hole vertical to the central line of the central shaft; the bayonet I is tightly matched and inserted into the pin hole, and a plurality of gaskets are coaxially sleeved and filled between the upper part of the bayonet I and the guide sleeve; and when the central shaft axially moves to the horizontal air holes to be communicated with the T-shaped air passage, the upper end surface of the uppermost gasket is tightly attached to the lower end surface of the guide sleeve shaft.

In order to save materials and reduce the difficulty of the dynamic seal matching of the sealing ring assembly and the barrel body after the paste is replaced each time; simultaneously, the machining precision requirements of all component parts of the dynamic sealing structure are reduced, and further: the sealing ring assembly comprises a pressing ring, a rubber gasket and a fastening assembly; the fastening component consists of a hexagonal head bolt with a hole and a nut matched with the thread of the hexagonal head bolt with the hole; the outer diameter of the rubber gasket is larger than the inner diameter of the barrel body, and the outer diameter of the rubber gasket is larger than the outer diameters of the pressure plate and the pressure ring; a plurality of coaxial through holes which correspond up and down are formed outside the pressure plate, the pressure ring and the rubber gasket ring body; the pressure disk top is located to the clamping ring, and through the foraminiferous hexagon head bolt that passes aforementioned through-hole screw nut between clamping ring and the pressure disk clamp the aforementioned rubber packing ring of tight fixed mounting.

Realize the rotation support installation that the relative bung of center pin was realized through rotating handle in the center pin top for adopting simple structure: a U-shaped supporting piece is fixed at the center of the barrel cover; the U-shaped supporting piece and the center of the barrel cover are respectively provided with an upper jack and a lower jack in a coaxial manner; the upper jack and the lower jack support central shaft are vertically arranged and are in sliding friction fit with the side wall of the outer circumference of the central shaft; the top end of the central shaft extends out of the barrel cover and is provided with a boss inserted rod with the diameter reduced; the boss inserted link and the handle fixing piece are coaxially matched and inserted and are coaxially and fixedly connected into a whole by a horizontal pin; the top of the handle fixing piece is provided with a horizontal through hole; the handle is a rod-shaped piece which is matched with and inserted into the horizontal through hole; and the two ends of the handle horizontally extend out of the left outer side and the right outer side of the handle fixing piece, and the handle is vertically fastened and fixedly connected with the handle fixing piece into a whole through an axially fastened screw.

To limit the axial oscillation of the compression spring, further: a U-shaped supporting piece is arranged at the center of the bottom of the barrel cover, and the outer side of the U-shaped supporting piece is tightly matched and sleeved with an inner ring at the top of the compression spring to be connected into a whole.

In any one of the above technical solutions, further: the paste outlet of the plunger pump device is connected with the coating plate component through a pipeline; the coating plate assembly is fixed on the inner side of the steel rail through a coating plate fixing device.

The utility model has the advantages compared with the prior art:

1. the utility model adopts the fixed position downdraft plunger pump device to pump out the paste, the weight of the pressure plate is light, and the separation and lifting operation is easier than the technical proposal with the authorized bulletin number of CN 204005164U;

2. the utility model realizes the axial up-and-down movement of the central shaft 5 by rotating the handle 6 to drive the central shaft 5 to rotate, realizes the conduction or blocking switching of the gas circuit between the central shaft 5T-shaped air passage 12 and the horizontal air holes 11 of the guide sleeve 10, relieves the vacuum adsorption between the pressure plate and the paste body, and saves the pipe arrangement in the barrel under the combined action of air blowing and separation; the structure is compact, and the separation operation is reliable and efficient;

3. the utility model judges whether the T-shaped air passage 12 is communicated with the horizontal air holes 11 or not by the axial upward limit of the lower limit piece 13 to the central shaft 5, and the handle 6 is rotated until the handle 6 can not rotate to stop the central shaft 5 from moving upwards, namely, the upper end surface of the uppermost gasket 13-1 is clung to the axial lower end surface of the guide sleeve 10; the T-shaped air passage 12 is communicated with the horizontal air holes 11; on the contrary, the central shaft 5 moves downwards, the T-shaped air passage 12 is blocked and communicated with the horizontal air holes 11 to close the air passage, and when the air passage is closed, the pressure scraping effect of the pressure plate is ensured;

4. the utility model has simple structure and easy assembly; the utility model discloses the simple structure of each component member among the overall structure, the assembly process degree of difficulty is low, economical and practical realizes easily.

Drawings

FIG. 1 is a schematic view of the three-dimensional partially exploded structure of the present invention;

fig. 2 is a schematic longitudinal sectional three-dimensional exploded structure view of the platen, the guide sleeve, the central shaft and the lower limiting member in fig. 1 according to the present invention;

fig. 3 is a schematic view of a longitudinal assembled three-dimensional structure of the center shaft and the barrel cover in fig. 1 according to the present invention;

FIG. 4 is a schematic view of the use state of the T-shaped air passage of the central shaft of the present invention when it is communicated with the horizontal air holes of the guiding sleeve;

fig. 5 is a schematic view of the usage state of the central shaft T-shaped air passage and the guide sleeve horizontal air hole of the present invention when the conduction state of fig. 4 is switched to the blocking state;

FIG. 6 is a schematic view of the application state of the present invention after the coating board assembly is connected;

fig. 7 is a cross-sectional view of the dynamic sealing structure of the pressure plate of the present invention.

Detailed Description

Specific embodiments of the present invention will be described below with reference to fig. 1 to 7. It is to be understood that the following description of the embodiments is merely exemplary and not intended to limit the invention in any way.

The following examples are provided to facilitate a better understanding of the present invention, but are not intended to limit the present invention. The pumping methods of the plunger pump devices in the following examples are conventional methods unless otherwise specified. The members and the member materials used in the following examples are commercially available unless otherwise specified. In the following embodiments, the control circuit of the pumping device and the control circuit of the high-pressure blowing system related to the solenoid valve are implemented in a conventional control manner, unless otherwise specified.

In the present invention, without the contrary explanation, it is understood that: the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in fig. 1 for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "disposed," and "provided" are to be construed broadly and may include, for example, either a fixed connection or a detachable connection. For example, the connection may be direct mechanical connection or indirect connection via other intermediate members. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Take downdraft rail antifriction film forming paste coating equipment of pressure disk, including antifriction film forming paste staving 1, plunger pump device 2, coating plate subassembly 14, hasp 3, bung 4, center pin 5, pressure disk 7, sealing washer subassembly 8 and compression spring 9: (see fig. 1) is characterized in that: plunger pump device 2 fixed mounting has effectively to prevent contaminated advantage of plunger pump device in the updraft type structure of linkage simultaneously along with pressure disk 7 in 1 bottoms of staving.

With regard to the downdraft plunger pump, it should be noted that: the pumping principle of the plunger pump device 2 is the same as that of the plunger pump device 2 in the prior art. And a pump suction port of the plunger pump device 2 is positioned at the bottom of the inner side of the barrel body 1 to pump the film forming paste; the paste outlet 21 of the plunger pump device 2 is located below the outside of the barrel 1 and is connected to the coating plate assembly 14 as shown in fig. 6 through a paste outlet pipe. With regard to the cooperation of the catch 3 with the lid 4, it should be understood that: the lock catch 3 is a lock catch with a primary-secondary structure; the son is buckled and is installed in bung 4, and the box is installed in staving 1 to realize the solid connection of bung 4 relative staving 1.

Further in the above embodiment, for realizing that the central shaft 5 is rotatably connected with the barrel cover 4 in a clearance fit supporting manner with simple and reliable structure: (see fig. 3) a U-shaped supporting member 4-1 is fixed at the center of the barrel cover 4; the centers of the U-shaped supporting piece 4-1 and the barrel cover 4 are respectively provided with an upper jack 4-2 and a lower jack 4-2 coaxially; the upper and lower jacks 4-2 support the central shaft 5 to be vertically arranged and can be in sliding friction fit with the outer circumferential side wall of the central shaft 5 by reserving a gap of 2 mm; the top end of the central shaft 5 extends out of the upper part of the barrel cover 4 and is provided with a boss inserted bar 5-1 (see figure 3) with reduced diameter; the boss inserted link 5-1 and the handle fixing piece 6-1 are coaxially matched and spliced and are coaxially and fixedly connected into a whole by a horizontal pin 6-2; the horizontal pin 6-2 is preferably a tapered pin to facilitate wedging. The top of the handle fixing piece 6-1 is provided with a horizontal through hole 6-3; the handle 6 is a rod-shaped piece which is matched with and inserted into the horizontal through hole 6-3; and two ends of the handle 6 horizontally extend out from the left outer side and the right outer side of the handle fixing piece 6-1, and the handle 6 is vertically fastened and fixedly connected with the handle fixing piece 6-1 into a whole through an axially fastened screw 6-4, so that the lower end face of the axially fastened screw 6 is fastened and tightly abutted against the upper end face of the outer circumferential side wall of the handle 6, and the handle 6 is vertically fastened and fixedly connected with the handle fixing piece 6-1 into a whole. Furthermore, the utility model discloses a biplate support and with biplate through-hole clearance fit's mode, realize that 5 tops of center pin realize the rotation support installation of 5 relative bung 4 of center pin through rotating handle 6. By adopting the structure, the structure is simple, the processing is easy, the realization is easy, and the matching process precision of the central shaft 5 and the upper and lower jacks 42, especially the processing precision has no higher requirement, so the processing is relatively simple and easy, the realization is easy, and the device is economical and practical.

In addition, as utility model's institutional advancement still lies in: the central shaft 5 vertically penetrates through the center of the barrel cover 4 and is rotatably connected with the center of the barrel cover 4. The upper end of the central shaft 5 extends out of the barrel cover 4 and is fixedly connected with a handle 6 for rotating the central shaft 5; the handle 6 is fixedly connected with the central shaft 5 into a whole, the handle 6 drives the central shaft 5 to rotate, and the pulling and pulling separation of the pressure plate 7 and the film forming paste body can be realized by pulling the handle 6. Regarding the fixed connection of the handle to the central shaft 5: the top end of the central shaft 5 extends out of the upper part of the barrel cover 4 and is provided with a boss inserted bar 5-1 with the diameter reduced; the boss inserted link 5-1 and the handle fixing piece 6-1 are coaxially matched and spliced and are coaxially and fixedly connected into a whole by a horizontal pin 6-2; the top of the handle fixing piece 6-1 is provided with a horizontal through hole 6-3; the handle 6 is a rod-shaped piece which is matched with and inserted into the horizontal through hole 6-3; and two ends of the handle 6 horizontally extend out of the left outer side and the right outer side of the handle fixing piece 6-1, and the handle 6 is vertically and fixedly connected with the handle fixing piece 6-1 into a whole through an axially fastened screw 6-4.

About the utility model discloses the improvement of structure still lies in: the lower end of the central shaft 5 extends into the barrel body 1, and a guide sleeve 10 is mounted on the bottom of the barrel body in an axially sliding and displacing manner; the longitudinal section of the sleeve body of the guide sleeve 10 is of an inverted T-shaped structure, and the sleeve body of the guide sleeve 10 penetrates through the central through hole of the pressure plate 7 and is coaxially and fixedly connected with the pressure plate 7 into a whole; a compression spring 9 is pressed between the pressure plate 7 and the barrel cover 4; namely, the compression spring 9 is disposed coaxially with the center shaft 5 so as to be fitted around the center shaft 5. The central shaft 5 penetrates through the guide sleeve 10 and extends out of the bottom of the pressure plate, an external thread is formed on the outer circumference of the bottom of a rod body of the extended central shaft 5, a change nut 16 with an internal thread is screwed and matched through the external thread, a positioning lug 17 which is axially protruded upwards and is of a cylindrical structure is fixedly arranged on the upper end face of a nut body of the change nut 16, and the positioning lug 17 is in convex-concave matching and limiting clamping connection with a limiting clamping groove 18 formed at the axial bottom end of a sleeve body of the guide; the lower limiting piece 13 is sleeved on the shaft body of the central shaft 5 below the variable nut 16; the lower limiting piece 13 consists of a plurality of gaskets 13-1 sleeved outside the bottom end of the rod body of the central shaft 5 and a bayonet I13-2 horizontally and fixedly arranged below the gaskets 13-1 and horizontally penetrating through the bottom end of the rod body of the central shaft 5; an upper limiting piece 19 is fixedly arranged below the barrel cover 4 on the upper rod body of the central shaft 5; the upper limiting piece 19 is a clamping pin II 19-1; the axial bottom end of the central shaft 5 is provided with a T-shaped air passage 12; the sleeve body of the guide sleeve 10 is provided with axisymmetric horizontal air holes 11 by taking the central shaft of the sleeve body as a symmetry axis; the T-shaped air passage 12 is communicated or blocked with the horizontal air holes 11 through the axial displacement of the central shaft 5.

On the basis of the above embodiment, after the T-shaped air passage 12 and the horizontal air holes 11 of the guide sleeve 10 are communicated, the vacuum adsorption force between the pressure plate 7 and the paste body under atmospheric pressure is released, and on the basis that the separation between the pressure plate 7 and the film forming paste at the barrel bottom 1 is further assisted by adopting an air blowing mode, so that the easier and labor-saving separation is realized on the basis of the pulling separation, and further: the bottom of the barrel body 1 is also provided with a one-way valve 1-1 for blowing air below the pressure plate 7; the one-way valve 1-1 is connected with an air source 1-4 through an air transmission pipeline 1-2; and the gas transmission pipeline 1-2 is provided with an electromagnetic valve 1-3. With respect to the gas source 1-4, it should be understood that means including, but not limited to, gas cylinders, electric air pumps, etc., and not limited to, providing a booster pump, pressure gauge, etc., on the gas delivery line 1-2.

On the basis of the above embodiment, in order to facilitate the rotation of the central shaft, the switching between the conduction or the closing of the horizontal air holes 11 and the T-shaped air passage 12 is realized through the axial displacement of the central shaft; the handle 6 is particularly convenient to sense whether the air passage is communicated or not in a non-perspective way: the bottom end of the central shaft 5 is provided with a pin hole 13-3 vertical to the central line of the central shaft 5; the bayonet 13-2 is tightly matched and inserted into the pin hole 13-3, and a plurality of gaskets 13-1 are coaxially sleeved and filled between the upper part of the bayonet 13-2 and the guide sleeve 10; and when the central shaft 5 axially moves to the horizontal air holes 11 to be communicated with the T-shaped air passage 12, the upper end surface of the uppermost gasket 13-1 is closely attached to the axial lower end surface of the guide sleeve 10.

On the basis of the above embodiment, for saving the materials, the utility model discloses another characteristics lie in: in order to reduce the difficulty of dynamic seal matching after the sealing ring assembly 8 and the barrel body 1 change paste each time; simultaneously, the machining precision requirements of all component parts of the dynamic sealing structure are reduced, and further: (see fig. 7) the seal ring assembly 8 comprises a pressure ring 8-1, a rubber gasket 8-2 and a fastening assembly 8-3; the fastening component 8-3 consists of a hexagonal head bolt with a hole 8-31 and a nut 8-32 matched with the thread of the hexagonal head bolt with the hole; the outer diameter of the rubber gasket 8-2 is larger than the inner diameter of the barrel body 1, and the outer diameter of the rubber gasket 8-2 is larger than the outer diameters of the pressure plate 7 and the pressure ring 8-1; a plurality of coaxial through holes 8-4 which correspond up and down are formed outside the ring body of the pressure plate 7, the pressure ring 8-1 and the rubber gasket 8-2; the pressing ring 8-1 is arranged above the pressing plate 7, and the rubber gasket 8-2 is clamped and fixedly installed between the pressing ring 8-1 and the pressing plate 7 through a hexagonal head bolt 8-31 with a hole, which penetrates through the through hole 8-4, and 8-32 oppositely.

Specifically, in order to prevent the compression spring 9 from being extruded when the pressure plate 7 is initially installed, the paste overflows from the periphery of the rubber gasket 8-2 in the seal ring assembly 8 due to the paste reaction force, and the phenomenon can be avoided by reducing the diameter difference (for example, the diameter difference is controlled to be 8-15mm) between the outer diameter of the rubber gasket 8-2 and the outer diameter of the pressure ring 8-1; and the overflow of the paste around the sealing ring component 8 can be prevented by improving the folding strength and the rigidity of the rubber ring 8-2 material.

On the basis of the above embodiment, to limit the axial swing of the compression spring, further: the center of the bottom of the barrel cover 4 is provided with a U-shaped supporting piece 4-1, and the outer side of the U-shaped supporting piece 4-1 is tightly matched and sleeved with an inner ring at the top of the compression spring 9 to form a whole.

In any of the preceding embodiments, further: the paste outlet 21 of the plunger pump device 2 is connected with the coating plate component 14 through a pipeline; the coated panel assembly 14 is secured to the inside of the rail 15 by a coated panel securing means. The working principle of the lubricant coating of the coating plate assembly 14 on the inner side surface of the steel rail 15 needs to be explained as follows: referring to the technical solution of dc intelligent coating equipment for track under the grant publication No. CN105644583A, the working principle and the structural composition of the coating plate assembly 14 communicating with the pumping paste outlet 21 of the plunger pump device 2 to perform the coating and lubricating operation on the steel rail 15 are the same as the pumping coating working principle of the technical solution of dc intelligent coating equipment for track under the grant publication No. CN105644583A, and are not described herein again. The difference lies in that: the utility model discloses technical scheme replaces the grease bin that the notice number is CN105644583A technical scheme with the staving 1 of cylindrical structure to the dynamic seal evacuation of the downdraft plunger pump device of solving the grease bin prevents the air suction technical problem. Furthermore, it should be understood that the utility model discloses a coating board subassembly 14 can realize the intelligent coating operation of coating board subassembly with the help of green clean energy equally with the help of photovoltaic energy storage subassembly, control box, charge and discharge controller, automatic control system, battery, electromagnetic sensor, photovoltaic energy storage subassembly.

The utility model discloses a theory of operation: firstly, the working principle of preventing air suction is as follows; the release of pressure disk 7 through the 9 elastic potential energy of compressed compression spring guarantees that pressure disk 7 closely laminates antifriction cream lotion upper surface all the time to constantly scrape down and press antifriction cream, prevent that the air-suction from appearing in the downdraft plunger pump device.

The working principle of the vacuum adsorption force relief between the pressing plate and the paste body is as follows: the central shaft 5 is driven to rotate by rotating the handle 6, the rotating central shaft 5 drives the variable nut 16 which is screwed and matched with the bottom end of the central shaft 5 to rotate until the positioning lug 17 on the upper end surface of the variable nut 16 rotates and is brought into the limiting block 18, and the variable nut 16 and the guide sleeve 10 are temporarily and fixedly connected into a whole to limit the continuous rotation of the variable nut 16 through the limiting block function of convex-concave matching of the positioning lug 17 and the limiting block groove 18; at this time, the handle 6 is continuously rotated, and the central shaft 5 moves up and down along the axial direction of the guide sleeve 10 until the handle 6 cannot drive the central shaft 5 to rotate and move up continuously, the upper end face of the topmost washer 13-1 abuts against the lower limiting piece 13 on the lower end face of the variable nut 16 to limit the central shaft 5 to move up continuously, and then the vacuum state between the pressure plate 7 and the paste body is prompted to be broken. At this time, the lock catch 3 of the barrel cover 4 is firstly loosened, the handle 6 is easily pulled out, and the central shaft 5 can be lifted and pulled out together with the pressure plate 7 and the handle 6 under the blocking and limiting effects of the limiting piece 19 on the central shaft 5, so that the paste is continuously replenished into the barrel body.

The working principle of the pressure plate 7 and the paste vacuum adsorption force recovery is as follows: a T-shaped air passage 12 and a horizontal air hole 11 which are originally in a conducting state are arranged; the central shaft 5 is driven to rotate reversely by rotating the handle 6 in the direction opposite to the rotating direction of the front communicated air passage; after the central shaft 5 goes down for a certain distance, the handle 6 and the central shaft 5 are pushed downwards, and the separation and resetting of the change nut 16 and the guide sleeve 10 are realized.

The working principle of the assembly of the pressure plate sealing ring component and the barrel body is as follows: after four fifths of paste is filled in the barrel body, a sealing ring component 8 with the diameter larger than that of the barrel body is pressed aiming at the barrel opening, and the barrel cover 4 and the barrel body 1 are buckled through a lock catch 3; the compression spring 9 is compressed by the reaction force of the paste to the bottom of the pressure plate 7; the compressed compression spring 9 has a scraping effect on the paste body, and the suction of the downdraft plunger pump device 2 is prevented.

In practical application, it is explained that: in order to prevent the resistance to removal of the separation platen 7 from increasing due to a small amount of paste entering the bottom end of the T-shaped air passage 12, the effect of the increase in the resistance to removal due to the paste clogging can be prevented by reducing the diameter of the bottom end of the T-shaped air passage 12. Preferably: the diameter of the T-shaped air passage 12 is between 5mm and 8 mm.

From the above description it can be found that: firstly, the utility model discloses a fixed position's downdraft plunger pump device pump suction cream, the pressure disk counter weight is light, and the operation is lifted to the separation more authorizes the technical scheme that bulletin number is CN204005164U, and is lighter. Secondly, the utility model realizes the axial up-and-down movement of the central shaft 5 by rotating the handle 6 to drive the central shaft 5 to rotate, realizes the conduction or blocking switching of the gas circuit between the central shaft 5T-shaped air passage 12 and the horizontal air holes 11 of the guide sleeve 10, relieves the vacuum adsorption between the pressure plate and the paste body, and saves the pipe arrangement in the barrel under the combined action of air blowing and separation; compact structure, reliable and efficient separation operation. Furthermore, the utility model judges whether the T-shaped air passage 12 is communicated with the horizontal air holes 11 or not by the axial upward limit of the lower limit piece 13 to the central shaft 5, and the handle 6 is rotated until the handle 6 can not rotate to stop the central shaft 5 from moving upwards, namely, the upper end surface of the uppermost gasket 13-1 is clung to the axial lower end surface of the guide sleeve 10; the T-shaped air passage 12 is communicated with the horizontal air holes 11; on the contrary, the central shaft 5 moves downwards, the T-shaped air passage 12 is communicated with the horizontal air holes 11 in a blocking mode, the air passage is closed, and when the air passage is closed, the pressure scraping effect of the pressure plate 7 is guaranteed. Moreover, the utility model has simple structure and easy assembly; the utility model discloses the simple structure of each component member among the overall structure, the assembly process degree of difficulty is low, economical and practical realizes easily.

Moreover, the utility model judges whether the T-shaped air passage 12 is communicated with the horizontal air holes 11, the upward movement of the central shaft 5 is realized by the rotation of the handle 6 until the lower end surface of the guide sleeve 10 abuts against the lower end surface of the gasket 131 at the top to stop, so as to play the role of limiting the continuous upward movement of the central shaft 5 and stop the central shaft 5 when the central shaft 5 can not move upward any more; the touch feeling of the manual handle 6 indicates that the T-shaped air passage 12 and the horizontal air holes 11 are communicated with each other in the state shown in figure 4; whether the air flue is communicated or not is indicated by adopting touch, and the design is ingenious.

In conclusion, the pressure plate of the utility model has light weight, and the lifting can be manually completed; the pressing plate is realized through the release of compression spring by compression elastic potential energy and is scraped the pressure effect downwards to the nothing of lotion, has effectively solved the air-suction prevention technical problem of downdraft plunger pump device, and adopts simple mechanical structure, through simple rotating handle operation, has solved the light technical problem of pulling out and pulling out of pressure disk 7 and lotion. Therefore, the utility model has simple structure and easy assembly; the structure of each component member in the whole structure is simple, the difficulty of the assembly processing technology is low, and the method belongs to the technical scheme of being economical, practical and easy to realize.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that all equivalent changes made by the contents of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. Downdraft rail antifriction film forming paste coating equipment, including antifriction film forming paste staving (1), plunger pump device (2), coating plate subassembly (14), hasp (3), bung (4), center pin (5), pressure disk (7), sealing washer subassembly (8) and compression spring (9): the method is characterized in that: the plunger pump device (2) is fixedly arranged at the bottom of the barrel body (1); a central shaft (5) vertically penetrates through the center of the barrel cover (4) and is rotatably connected with the center of the barrel cover (4); the upper end of the central shaft (5) extends out of the barrel cover (4) and is fixedly connected with a handle (6) used for rotating the central shaft (5); the lower end of the central shaft (5) extends into the barrel body (1), and a guide sleeve (10) is mounted on the bottom of the central shaft in an axially sliding and shifting manner; the longitudinal section of the sleeve body of the guide sleeve (10) is of an inverted T-shaped structure, and the sleeve body of the guide sleeve (10) penetrates through a central through hole of the pressure plate (7) and is coaxially and fixedly connected with the pressure plate (7) into a whole; a compression spring (9) is pressed between the pressure plate (7) and the barrel cover (4); the central shaft (5) penetrates through the guide sleeve (10) and extends out of the bottom of the pressure plate, an external thread is formed on the outer circumference of the bottom of a rod body of the extending central shaft (5), an internal thread changing nut (16) is matched and matched with the external thread in a screwing mode, a positioning lug (17) which protrudes axially and is of a cylindrical structure is fixedly arranged on the upper end face of a nut body of the changing nut (16), and the positioning lug (17) is in convex-concave fit with a limiting clamping groove (18) formed in the axial bottom end of a sleeve body of the guide sleeve (10) to limit the rotation of the changing nut; a lower limiting piece (13) is sleeved on the shaft body of the central shaft (5) below the variable nut (16); the lower limiting piece (13) consists of a plurality of gaskets (13-1) sleeved outside the bottom end of the rod body of the central shaft (5) and a clamping pin I (13-2) horizontally and fixedly arranged below the gaskets (13-1) and horizontally penetrating through the bottom end of the rod body of the central shaft (5); an upper limiting piece (19) is fixedly arranged on the upper rod body of the central shaft (5) below the barrel cover (4); the upper limiting piece (19) is a clamping pin II (19-1); the axial bottom end of the central shaft (5) is provided with a T-shaped air passage (12); the sleeve body of the guide sleeve (10) is provided with axisymmetric horizontal air holes (11) by taking the central shaft of the sleeve body as a symmetry axis; the T-shaped air passage (12) is communicated or blocked with the horizontal air holes (11) through the axial displacement of the central shaft (5).

2. The downdraft steel rail friction reducing film forming paste coating apparatus according to claim 1, wherein: the bottom of the barrel body (1) is also provided with a one-way valve (1-1) blowing air towards the lower part of the pressure plate (7); the one-way valve (1-1) is connected with an air source (1-4) through an air transmission pipeline (1-2); and the gas transmission pipeline (1-2) is provided with an electromagnetic valve (1-3).

3. The downdraft steel rail friction reducing film forming paste coating apparatus according to claim 1, wherein: the bottom end of the central shaft (5) is provided with a pin hole (13-3) vertical to the central line of the central shaft (5); the bayonet I (13-2) is tightly matched and inserted into the pin hole (13-3), and a plurality of gaskets (13-1) are coaxially sleeved and filled between the upper part of the bayonet I (13-2) and the guide sleeve (10); and when the central shaft (5) axially moves to the horizontal air holes (11) to be communicated with the T-shaped air passage (12), the upper end surface of the uppermost gasket (13-1) is closely attached to the axial lower end surface of the guide sleeve (10).

4. The downdraft steel rail friction reducing film forming paste coating apparatus according to claim 1, wherein: the sealing ring assembly (8) comprises a pressing ring (8-1), a rubber gasket (8-2) and a fastening assembly (8-3); the fastening component (8-3) consists of a hexagonal head bolt with a hole (8-31) and a nut (8-32) matched with the thread of the hexagonal head bolt with the hole; the outer diameter of the rubber gasket (8-2) is larger than the inner diameter of the barrel body (1), and the outer diameter of the rubber gasket (8-2) is larger than the outer diameters of the pressure plate (7) and the pressure ring (8-1); a plurality of coaxial through holes (8-4) which correspond up and down are formed outside the ring body of the pressure plate (7), the pressure ring (8-1) and the rubber gasket (8-2); the pressing ring (8-1) is arranged above the pressing plate (7), and the rubber gasket (8-2) is clamped and fixedly installed between the pressing ring (8-1) and the pressing plate (7) through a hexagonal head bolt (8-31) with a hole, which penetrates through the through hole (8-4), and a nut (8-32) is screwed.

5. The downdraft steel rail friction reducing film forming paste coating apparatus according to claim 1, wherein: a U-shaped supporting piece (4-1) is fixed at the center of the barrel cover (4); the centers of the U-shaped supporting piece (4-1) and the barrel cover (4) are respectively provided with an upper jack and a lower jack (4-2) coaxially; the upper and lower jacks (4-2) support the central shaft (5) to be vertically arranged and are in sliding friction fit with the side wall of the outer circumference of the central shaft (5); the top end of the central shaft (5) extends out of the barrel cover (4) and is provided with a boss inserted rod (5-1) with the diameter reduced; the boss inserted link (5-1) is coaxially matched and inserted with the handle fixing piece (6-1) and is coaxially and fixedly connected into a whole by a horizontal pin (6-2); the top of the handle fixing piece (6-1) is provided with a horizontal through hole (6-3); the handle (6) is a rod-shaped piece which is matched with and inserted into the horizontal through hole (6-3); and two ends of the handle (6) horizontally extend out of the left outer side and the right outer side of the handle fixing piece (6-1), and the handle (6) is vertically and fixedly connected with the handle fixing piece (6-1) into a whole through an axially fastened screw (6-4).

6. The downdraft steel rail friction reducing film forming paste coating apparatus according to claim 1 or 4, wherein: the center of the bottom of the barrel cover (4) is provided with a U-shaped supporting piece (4-1), and the outer side of the U-shaped supporting piece (4-1) is tightly matched with an inner ring at the top of the compression spring (9) in a sleeved mode to be connected into a whole.

7. The downdraft steel rail friction reducing film forming paste coating apparatus according to any one of claims 1, 2, 3, 4, or 5, wherein: the paste outlet (21) of the plunger pump device (2) is connected with the coating plate component (14) through a pipeline; the coating plate assembly (14) is fixed on the inner side of the steel rail (15) through a coating plate fixing device.