CN217898325U

CN217898325U - Stability gland of proportional servo valve installation usefulness

Info

Publication number: CN217898325U
Application number: CN202220072733.6U
Authority: CN
Inventors: 刘常芝; 吴广怀
Original assignee: Jinan Bohua Hydraulic Co ltd
Current assignee: Jinan Bohua Hydraulic Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-11-25
Anticipated expiration: 2032-01-12

Abstract

The utility model discloses a stability gland of proportional servo valve installation usefulness belongs to servo valve technical field, the one end of valve body has the gland through connecting bolt fastening, the inner wall joint of gland has the cardboard, the fixed surface of cardboard is connected with the piston bush of symmetry, the one end of piston bush is equipped with the piston rod, buffer spring has been cup jointed in the outside of piston rod and piston bush, the one end fixedly connected with bracing piece that the piston should, the surface sliding connection of bracing piece has the buffer board of symmetry, the one end fixedly connected with connecting block of buffer board, this stability gland of proportional servo valve installation usefulness is through piston rod and the buffer spring who sets up, can carry out dual buffering to the extrusion force of feedback rod, and the buffer board of setting can carry out the buffering relief force on the horizontal direction with the vertical extrusion force of feedback rod, thereby make the great reduction of the extrusion force of feedback rod to the extrusion of gland, and then great improvement the installation stability of gland.

Description

Stability gland of proportional servo valve installation usefulness

Technical Field

The utility model relates to a servovalve technical field, more specifically say, relate to a stable gland of proportional servo valve installation usefulness.

Background

Electro-hydraulic proportional servo valves (also called servo proportional valves, which are more commonly called servo proportional valves) are the products of the combination of proportional technology and servo technology.

At present, along with the progress of science and technology, an electro-hydraulic proportional servo valve is applied to a plurality of fields, for example, an electro-proportional servo control valve disclosed in the publication No. CN214330862U, but a gland arranged in a general servo valve is easy to be loosened by long-time extrusion of a feedback rod, so that a gap is generated between the gland and a valve body, and the installation stability of the gland is greatly reduced.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a stability gland of proportional servo valve installation usefulness, the piston rod and the buffer spring of this stability gland of proportional servo valve installation usefulness can carry out dual buffering to the extrusion force of feedback pole through setting up to the buffer board of setting can carry out the buffering of feedback pole with the vertical extrusion force of feedback pole and let out the power in the horizontal direction, thereby make the great reduction of extrusion force of feedback pole to the extrusion of gland, and then great improvement the installation stability of gland.

In order to solve the problem, the utility model adopts the following technical proposal.

The utility model provides a stability gland of proportional servo valve installation usefulness, includes the valve body, the one end of valve body has the gland through connecting bolt fastening, the inner wall joint of gland has the cardboard, the fixed surface of cardboard is connected with the piston cover of symmetry, the one end of piston cover is equipped with the piston rod, buffer spring has been cup jointed in the outside of piston rod and piston cover, the one end fixedly connected with bracing piece that the piston should, the sliding surface of bracing piece is connected with the buffer board of symmetry, the one end fixedly connected with connecting block of buffer board, the one end fixedly connected with feedback rod of connecting block, a side contact of buffer board is connected with supporting spring, another side contact of buffer board is connected with extrusion spring, extrusion spring's one end contact is connected with the spacing ring, and this stability gland of proportional servo valve installation usefulness can carry out dual buffering through the piston rod and the buffer spring that set up to the extrusion force of feedback rod can carry out the buffering power of horizontal direction with the perpendicular extrusion force of feedback rod to the buffer board that sets up to make the great reduction of feedback rod to the extrusion of gland, and then improved the installation stability of gland.

Further, the fixed cover of side fixedly connected with of valve body, the side fixedly connected with adapter sleeve of gland, the inner wall and the surface contact of connecting bolt of adapter sleeve are connected, the inner wall of fixed cover and connecting bolt's surface threaded connection, connecting bolt's one end threaded connection has the anticreep nut, through the mounted position of the fixed gland that can be quick with connecting bolt threaded connection's fixed cover, through the internal thread of anticreep nut and fixed cover moreover, improvement connecting bolt's that can be great locking pine performance of taking off.

Further, the terminal surface contact of gland is connected with outer sealing pad and interior sealed pad, a surface contact of interior sealed pad is connected with the boss, the side contact of gland is connected with the side pad, through the outer sealing pad, interior sealed pad and the side pad that set up, can seal through the three different sealed faces to gland and valve body contact, great improvement the sealed effect of gland.

Further, the inside of gland is equipped with T type draw-in groove, the inner wall of draw-in groove is connected with the surface contact of cardboard, the cardboard adopts elastic metal material to make, and the draw-in groove that sets up and the cardboard that elastic material made for the cardboard can be quick carry out the partition combination with the gland.

Further, the buffer board adopts spring steel plate to make, and two buffer boards of symmetry are the splayed, and the splayed buffer board that sets up can change the pressure direction of feedback pole to increase the buffering and form, improve buffering effect.

Compared with the prior art, the utility model has the advantages of:

(1) This scheme can carry out dual buffering through the piston rod and the buffer spring that set up to the extrusion force of feedback pole to the buffer board that sets up can carry out the buffering of feedback pole with the vertical extrusion force on the horizontal direction and let out the power, thereby makes the great reduction of extrusion force of feedback pole to the extrusion of gland, and then great improvement the installation stability of gland.

(2) The fixed cover of side fixedly connected with of valve body, the side fixedly connected with adapter sleeve of gland, the inner wall of adapter sleeve is connected with connecting bolt's surface contact, the inner wall of fixed cover and connecting bolt's surperficial threaded connection, connecting bolt's one end threaded connection has the anticreep nut, the mounted position of fixed gland that can be quick through the fixed cover with connecting bolt threaded connection, through the internal thread of anticreep nut and fixed cover, improvement connecting bolt's that can be great locking performance of taking off moreover.

(3) The end face contact of gland is connected with outer sealing pad and interior sealed pad, and the surface contact of interior sealed pad is connected with the boss, and the side contact of gland is connected with the side pad, fills up through the outer sealing pad that sets up, interior sealed pad and side pad, can seal through the three different sealed faces to gland and valve body contact, great improvement the sealed effect of gland.

(4) The inside of gland is equipped with T type draw-in groove, and the inner wall of draw-in groove is connected with the surface contact of cardboard, and the cardboard adopts elastic metal material to make, and the draw-in groove of setting and the cardboard that elastic material made for the cardboard can be quick carry out the partition combination with the gland.

(5) The buffer board adopts spring steel plate to make, and two buffer boards of symmetry are the splayed, and the splayed buffer board that sets up can change the pressure direction of feedback pole to increase the buffering and form, improve buffering effect.

Drawings

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

FIG. 2 is an enlarged view of the portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a side view of the baffle structure of FIG. 2;

fig. 5 is a top view of the gland structure of the present invention.

The reference numbers in the figures illustrate:

the hydraulic buffer valve comprises a valve body 1, a fixed sleeve 11, a connecting bolt 12, an anti-falling nut 13, a boss 14, a feedback rod 2, a connecting block 21, a gland 3, a connecting sleeve 31, a clamping groove 32, an outer sealing gasket 33, an inner sealing gasket 34, a side gasket 35, a clamping plate 4, a piston sleeve 41, a piston rod 42, a buffer spring 43, a buffer plate 5, a connecting hole 51, a supporting rod 52, an extrusion spring 53, a supporting spring 54 and a limiting ring 55.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a stable gland for installing a proportional servo valve comprises a valve body 1, referring to fig. 1-5, one end of the valve body 1 is fastened with a gland 3 through a connecting bolt 12, the inner wall of the gland 3 is clamped with a clamping plate 4, a T-shaped clamping groove 32 is arranged inside the gland 3, the inner wall of the clamping groove 32 is in contact connection with the surface of the clamping plate 4, the clamping plate 4 is made of an elastic metal material, the clamping groove 32 is arranged, and the clamping plate 4 is made of an elastic material, so that the clamping plate 4 can be quickly disassembled and assembled with the gland 3, the surface of the clamping plate 4 is fixedly connected with a symmetrical piston sleeve 41, one end of the piston sleeve 41 is provided with a piston rod 42, the outer sides of the piston rod 42 and the piston sleeve 41 are sleeved with a buffer spring 43, one end of the piston 42 is fixedly connected with a support rod 52, the surface of the support rod 52 is slidably connected with a symmetrical buffer plate 5, the buffer plate 5 is made of a spring steel plate, the two symmetrical buffer plates 5 are splayed, the splayed buffer plates 5 can change the pressure direction of the feedback rod 2, thereby increasing the buffer formation and improving the buffer effect, one end of the buffer plate 5 is fixedly connected with the connecting block 21, one end of the connecting block 21 is fixedly connected with the feedback rod 2, one side surface of the buffer plate 5 is in contact connection with the supporting spring 54, the supporting spring 54 is positioned between the symmetrical buffer plates 5 and is sleeved on the surface of the supporting rod 52, one end of the symmetrical buffer plate 5 can be prevented from moving inwards, the other side surface of the buffer plate 5 is in contact connection with an extrusion spring 53, the extrusion spring 53 is sleeved on the surface of the support rod 52, can cushion buffer plate 5 lateral shifting's extrusion force, the one end contact of extrusion spring 53 is connected with spacing ring 55, and spacing ring 55 is fixed to be cup jointed on the surface of bracing piece 52 for the one end position of restriction extrusion spring 53.

Referring to the drawings, a fixed sleeve 11 is fixedly connected to the side of a valve body 1, a connecting sleeve 31 is fixedly connected to the side of a gland 3, the inner wall of the connecting sleeve 31 is in contact connection with the surface of a connecting bolt 12, the inner wall of the fixed sleeve 11 is in threaded connection with the surface of the connecting bolt 12, one end of the connecting bolt 12 is in threaded connection with an anti-loosening nut 13, the mounting position of the gland 3 can be quickly fixed through the fixed sleeve 11 in threaded connection with the connecting bolt 12, and the anti-loosening performance of the connecting bolt 12 can be greatly improved through the anti-loosening nut 13 and the internal thread of the fixed sleeve 11.

Referring to the drawing, the end surface of the gland 3 is connected with the outer sealing gasket 33 and the inner sealing gasket 34 in a contact manner, one surface of the inner sealing gasket 34 is connected with the boss 14 in a contact manner, the side surface of the gland 3 is connected with the side gasket 35 in a contact manner, and by the arrangement of the outer sealing gasket 33, the inner sealing gasket 34 and the side gasket 35, three different sealing surfaces of the gland 3 in contact with the valve body 1 can be sealed, so that the sealing effect of the gland 3 is greatly improved.

This stability gland of proportional servo valve installation usefulness is in the servo valve working process, feedback rod 2 receives external force and extrudees to gland 3 position department, bracing piece 52 atress extrusion piston rod 42 this moment, piston rod 42 is in indentation piston sleeve 41 and carry out the first buffering to the extrusion force, when treating the certain length of piston rod 42 shrink, buffer spring 43 carries out the second buffering to the extrusion force, simultaneously when feedback rod 2 continues to extrude, make the buffer plate 5 of symmetry receive pressure and carry out horizontal migration to both sides, buffer plate 5 carries out the third buffering through extrusion spring 53 to both sides removal, through piston rod 42 and buffer spring 43 that set up, can carry out double buffering to the extrusion force of feedback rod 2, and the buffer plate 5 that sets up can carry out the buffering power of horizontal direction with the perpendicular extrusion force of feedback rod 2, thereby make the great reduction of the extrusion force of feedback rod 2 to the extrusion of gland 3, and then great improvement the installation stability of gland 3.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a stability gland that proportional servo valve installation was used, includes valve body (1), its characterized in that: the one end of valve body (1) is fastened with gland (3) through connecting bolt (12), the inner wall joint of gland (3) has cardboard (4), the fixed surface of cardboard (4) is connected with piston sleeve (41) of symmetry, the one end of piston sleeve (41) is equipped with piston rod (42), buffer spring (43) have been cup jointed in the outside of piston rod (42) and piston sleeve (41), the one end fixedly connected with bracing piece (52) of piston rod (42), the sliding surface of bracing piece (52) is connected with buffer board (5) of symmetry, the one end fixedly connected with connecting block (21) of buffer board (5), the one end fixedly connected with feedback rod (2) of connecting block (21), a side contact of buffer board (5) is connected with supporting spring (54), the another side contact of buffer board (5) is connected with extrusion spring (53), the one end contact of extrusion spring (53) is connected with spacing ring (55).

2. A stability gland for installation of a proportional servo valve according to claim 1, wherein: the fixed cover (11) of side fixedly connected with of valve body (1), the side fixedly connected with adapter sleeve (31) of gland (3), the inner wall of adapter sleeve (31) is connected with the surface contact of connecting bolt (12), the inner wall of fixed cover (11) and the surperficial threaded connection of connecting bolt (12), the one end threaded connection of connecting bolt (12) has anticreep nut (13).

3. A stability gland for installation of a proportional servo valve according to claim 1, wherein: the end face contact of gland (3) is connected with outer packing pad (33) and interior packing pad (34), the surface contact of interior packing pad (34) is connected with boss (14), the side contact of gland (3) is connected with side pad (35).

4. A stability gland for installation of a proportional servo valve according to claim 1, wherein: the novel clamping structure is characterized in that a T-shaped clamping groove (32) is formed in the pressing cover (3), the inner wall of the clamping groove (32) is in contact connection with the surface of the clamping plate (4), and the clamping plate (4) is made of an elastic metal material.

5. A stability gland for installation of a proportional servo valve according to claim 1, wherein: the buffer plates (5) are made of spring steel plates, and the two symmetrical buffer plates (5) are splayed.