Lubricating device with better durability for movable iron core

Abstract

The utility model belongs to the technical field of electromagnetic valves, and relates to a better-durability lubricating device for a movable iron core, which comprises an iron core main body and a shell sleeved outside the iron core main body, a connecting groove is arranged on the shell, a lubricating device is arranged in the connecting groove, and the lubricating device comprises a first semicircular plate and a second semicircular plate. Cavities are formed in the first semicircular plate and the second semicircular plate, slotted holes communicated with the cavities are formed in the inner wall of the first semicircular plate and the inner wall of the second semicircular plate, balls are rotationally connected into the slotted holes, positioning blocks are arranged on the side wall of the first semicircular plate, positioning holes are formed in the two ends of the first semicircular plate, and positioning pieces clamped with the positioning blocks are arranged on the second semicircular plate. The positioning piece is hinged to the second semicircular plate, and a pin column used for stretching into the positioning hole is arranged at the end of the second semicircular plate. Compared with the prior art, the internal part of the lubricating channel is convenient to overhaul, and meanwhile, the connecting strength of the lubricating device and the plate body is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, and more specifically, to a lubricating device for a moving iron core with better durability. Background Art

[0002] The moving iron core is inserted in the middle of the static iron core, providing a variable magnetic circuit in the middle of the U-shaped iron core. The movement of the moving iron core can adjust the output current, that is, the welding current.

[0003] For example, the authorization announcement number CN220770287U discloses a moving iron core with an ultra-long life. By setting a card plate, an oil storage tank, a lubrication tank, glass beads and an annular baffle, a lubrication channel is set in the friction contact part of the moving iron core, and lubrication oil is filled in the lubrication channel, thereby reducing the friction of the moving iron core and increasing its life. In specific use, when power is turned on, the coil surrounding the moving iron core will generate a magnetic field, and this magnetic field will generate an interaction force with the main iron core, thereby pushing the main iron core to move. During the movement, the main iron core will rub against the inner wall of the card plate, wherein the oil storage tank is filled with lubrication oil. During the friction of the main iron core, it will contact with the glass beads, driving the glass beads to rotate in the lubrication tank, driving the internal lubrication oil to flow out, lubricating the friction part of the outer surface of the main iron core, and increasing the service life of the moving iron core.

[0004] In the above scheme, dust will enter the lubrication channel during long-term use, and the dust will get stuck in the lubrication groove, causing the glass beads to get stuck in the lubrication groove, affecting the lubrication effect. However, since the card plate is fixedly connected to the core shell, it is inconvenient to inspect the lubrication channel in the card plate. If a problem occurs, the entire shell can only be replaced, which is costly. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a lubricating device for a moving iron core with better durability, in which a lubrication channel can be removed separately for maintenance.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lubricating device for a moving iron core with better durability comprises an iron core body and a shell sleeved outside the iron core body, a connecting groove is provided on the shell, a lubricating device is provided in the connecting groove, the lubricating device comprises a first semicircular plate and a second semicircular plate, the first semicircular plate and the second semicircular plate both have cavities inside, the first semicircular plate and the second semicircular plate are both provided with slots connected to the cavities on their inner walls, and balls are rotatably connected in the slots,

[0008] The first semicircular plate and the second semicircular plate are both provided with oil filling holes connected to the cavity.

[0009] The side wall of the first semicircular plate is provided with a positioning block, and both ends of the first semicircular plate are provided with positioning holes.

[0010] The second semicircular plate is provided with a positioning piece engaged with the positioning block, and the positioning piece is hingedly connected to the second semicircular plate.

[0011] A pin column for extending into the positioning hole is arranged at the end of the second semicircular plate.

[0012] The utility model is further configured as follows: the positioning member includes a main body and a protrusion connected to the main body, a mounting hole is opened on the side wall of the main body, the mounting hole and the positioning block are interference fit, and resistance blocks are provided on both sides of the inner wall of the mounting hole, and the resistance blocks are made of rubber material.

[0013] The utility model is further configured as follows: a first magnetic sheet is arranged in the positioning hole, a second magnetic sheet is arranged on the end surface of the pin, and the first magnetic sheet and the second magnetic sheet are magnetically attracted.

[0014] The utility model is further configured as follows: an anti-slip sheet is adhered to the inner wall of the mounting hole.

[0015] The utility model is further configured as follows: a pull ring is provided on the outer wall of the second semicircular plate.

[0016] Compared with the shortcomings of the prior art, the beneficial effects of the utility model are:

[0017] By providing two detachable semicircular plates, the two semicircular plates can be disassembled to inspect and repair the lubrication device, and the lubrication device can also be replaced at the same time, thereby further extending the service life of the moving iron core. Furthermore, the first semicircular plate and the second semicircular plate are connected by magnetic attraction, thereby increasing the connection strength between the first semicircular plate and the second semicircular plate, facilitating the inspection of the lubrication channel while also improving the connection strength between the lubrication device and the plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0019] Figure 2 This is a schematic diagram of the connection between the first semicircular plate and the second semicircular plate of an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the first semicircular plate and the second semicircular plate of an embodiment of the utility model.

[0021] The core body 1, the shell 2, the connecting groove 3, the lubrication device 4, the first semicircular plate 5, the second semicircular plate 6, the slot 7, the ball 8, the oil filling hole 9, the positioning block 10, the positioning hole 11, the positioning member 12, the pin 13, the body 14, the protrusion 15, the mounting hole 16, the resistance block 17, the first magnetic sheet 18, the second magnetic sheet 19, and the pull ring 20. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] like Figures 1 to 3 As shown,

[0025] A lubricating device for a moving iron core with better durability comprises an iron core body 1 and a shell 2 sleeved outside the iron core body 1, a connecting groove 3 is provided on the shell 2, and a lubricating device 4 is provided in the connecting groove 3 for lubricating the surface of the moving iron core to reduce the friction generated by the moving iron core when it moves.

[0026] The lubricating device 4 comprises a first semicircular plate 5 and a second semicircular plate 6 . The first semicircular plate 5 and the second semicircular plate 6 both have cavities inside. The first semicircular plate 5 and the second semicircular plate 6 are both provided with oil injection holes 9 communicating with the cavities.

[0027] The inner walls of the first semicircular plate 5 and the second semicircular plate 6 are both provided with slots 7 connected to the cavity, and a ball 8 is rotatably connected in the slot 7. Lubricating oil is injected into the cavity and then applied to the surface of the moving iron core by the rotation of the ball 8 rotatably connected to the slot 7.

[0028] A pull ring 20 is provided on the outer wall of the second semicircular plate 6 for applying force to the second semicircular plate 6 to separate the first semicircular plate 5 from the second semicircular plate 6 .

[0029] A positioning block 10 is provided on the side wall of the first semicircular plate 5, and positioning holes 11 are opened at both ends of the first semicircular plate 5. A positioning piece 12 engaged with the positioning block 10 is provided on the second semicircular plate 6, and the positioning piece 12 is hingedly connected to the second semicircular plate 6. The connection between the first semicircular plate 5 and the second semicircular plate 6 is achieved by engaging the positioning piece 12 with the positioning block 10, and the positioning piece 12 hingedly connected to the second semicircular plate 6 can be opened and closed with the action of the operator.

[0030] The positioning member 12 includes a main body 14 and a protrusion 15 connected to the main body 14. A mounting hole 16 is opened on the side wall of the main body 14. The mounting hole 16 and the positioning block 10 are interference fit. Resistance blocks 17 are provided on both sides of the inner wall of the mounting hole 16. The resistance blocks 17 are made of rubber material to increase the friction between the mounting hole 16 and the positioning block 10, making the connection between the two more stable. At the same time, the resistance block 17 made of rubber material can further clamp the positioning block 10.

[0031] A pin 13 for extending into the positioning hole 11 is provided at the end of the second semicircular plate 6, a first magnetic sheet 18 is provided in the positioning hole 11, a second magnetic sheet 19 is provided on the end face of the pin 13, the first magnetic sheet 18 and the second magnetic sheet 19 are magnetically attracted, and by inserting the pin 13 into the positioning hole 11 and the first magnetic sheet 18 and the second magnetic sheet 19 are magnetically attracted, the second semicircular plate 6 is further connected to the first semicircular plate 5 by magnetic attraction.

[0032] Working principle: When in use, the first semicircular plate 5 and the second semicircular plate 6 are respectively covered on the connecting groove 3, and the pin 13 is aligned with the positioning hole 11, and the pin 13 is inserted into the positioning hole 11. At this time, the first magnetic sheet 18 and the second magnetic sheet 19 are magnetically attracted to connect the first semicircular plate 5 with the second semicircular plate 6, and then the main body 14 is folded up to make the mounting hole 16 engage with the positioning block 10. At the same time, the resistance block 17 firmly fixes the positioning hole 11 in the mounting hole 16 to realize the connection between the first semicircular plate 5 and the second semicircular plate 6. When disassembling, you only need to fold the main body 14 through the protrusion 15, and then pull the pin 13 out of the positioning hole 11 through the pull ring 20.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A lubricating device for a moving iron core with better durability, comprising an iron core body (1) and a shell (2) sleeved outside the iron core body (1), the shell (2) being provided with a connecting groove (3), and a lubricating device (4) being provided in the connecting groove (3), characterized in that: The lubricating device (4) comprises a first semicircular plate (5) and a second semicircular plate (6), each of the first semicircular plate (5) and the second semicircular plate (6) having a cavity therein, and the inner walls of the first semicircular plate (5) and the second semicircular plate (6) are provided with a slot (7) connected to the cavity, and a ball (8) is rotatably connected in the slot (7). The first semicircular plate (5) and the second semicircular plate (6) are both provided with oil injection holes (9) communicating with the cavity. A positioning block (10) is provided on the side wall of the first semicircular plate (5), and positioning holes (11) are provided at both ends of the first semicircular plate (5). The second semicircular plate (6) is provided with a positioning piece (12) engaged with the positioning block (10), and the positioning piece (12) is hingedly connected to the second semicircular plate (6). A pin (13) for extending into the positioning hole (11) is provided at the end of the second semicircular plate (6).

2. A lubricating device for a moving iron core with better durability according to claim 1, characterized in that: The positioning member (12) comprises a main body (14) and a protrusion (15) connected to the main body (14); a mounting hole (16) is provided on a side wall of the main body (14); the mounting hole (16) and the positioning block (10) are interference fit; and abutment blocks (17) are provided on both sides of the inner wall of the mounting hole (16); the abutment blocks (17) are made of rubber material.

3. A lubricating device for a moving iron core with better durability according to claim 2, characterized in that: A first magnetic sheet (18) is provided in the positioning hole (11), a second magnetic sheet (19) is provided on the end surface of the pin (13), and the first magnetic sheet (18) and the second magnetic sheet (19) are magnetically attracted to each other.

4. A lubricating device for a moving iron core with better durability according to claim 3, characterized in that: An anti-slip sheet is adhered to the inner wall of the mounting hole (16).

5. A lubricating device for a moving iron core with better durability according to claim 4, characterized in that: A pull ring (20) is provided on the outer wall of the second semicircular plate (6).

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