阅读说明：本技术 一种摆式行程开关 (Pendulum travel switch ) 是由 唐万春 张双虎 乔晓革 于 2020-12-11 设计创作，主要内容包括：一种摆式行程开关,在一个金属盒体的内部,固定着一段由绝缘材料制作的弧形弯管,在弧形弯管的两端及中部的最低点,每处分别固定着两条导电金属片,位于弯管内部的导电金属片都向外弯折一个角度,位于弯管外部的导电金属片上都焊有一条引出导线,在弯管的内部放置有一个可以滚动的金属珠,弧形弯管用发泡剂密封材料固定在金属盒体的内部,各金属片上的引出导线由金属盒体上部侧面的开孔引出；在金属盒体的顶部焊接有一个挂钩,用于将金属盒体挂在外部的一个销轴上。金属珠和导电金属片形成了一个开点和一个闭点,金属盒体被碰撞以后可以围绕挂钩处的销轴进行摆动。本发明的有益效果是：元件具有较高的防护等级和防碰撞能力。(A pendulum type travel switch is characterized in that a section of arc-shaped bent pipe made of insulating materials is fixed inside a metal box body, two conductive metal sheets are respectively fixed at each position of the two ends and the lowest point of the middle part of the arc-shaped bent pipe, the conductive metal sheets positioned inside the bent pipe are outwards bent for an angle, a lead-out lead is welded on the conductive metal sheets positioned outside the bent pipe, a metal bead capable of rolling is placed inside the bent pipe, the arc-shaped bent pipe is fixed inside the metal box body through foaming agent sealing materials, and the lead-out lead on each metal sheet is led out from an opening on the side surface of the upper part of the metal box body; the top of the metal box body is welded with a hook which is used for hanging the metal box body on an external pin shaft. The metal beads and the conductive metal sheet form an open point and a closed point, and the metal box body can swing around the pin shaft at the hook after being collided. The invention has the beneficial effects that: the element has higher protection grade and anti-collision capability.)

1. A pendulum type travel switch is characterized in that a section of arc-shaped bent pipe made of insulating materials is fixed below the inside of a metal box body, two ends of the arc-shaped bent pipe are respectively packaged with two circular insulating plates, the insulating plates are provided with two gaps, a conductive metal pole piece is inserted into each gap and is fixed on the insulating plates by using an adhesive, each metal pole piece positioned on the inner side of the insulating plates is bent for an angle, and a lead-out wire is welded on each metal pole piece positioned on the outer side of the insulating plates; two longitudinal gaps are formed in the lowest position of the center of the interior of the arc-shaped bent pipe, a conductive metal pole piece is inserted into each gap and is fixed by an adhesive, each metal pole piece located in the interior of the arc-shaped bent pipe is bent outwards at an angle and is attached to the inner surface of the arc-shaped bent pipe, and a lead-out wire is welded on each metal pole piece located outside the arc-shaped bent pipe; a metal bead is arranged in the arc-shaped bent pipe and can roll in the arc-shaped bent pipe; the arc-shaped bent tube is fixed in the metal box body by a foaming agent sealing material, and the lead-out wires on each conductive metal pole piece are led out from the opening on the side surface of the upper part of the metal box body; the top of the metal box body is welded with a hanging plate, and the hanging plate is provided with a hanging hole for hanging the metal box body on an external pin shaft.

2. The pendulum-type travel switch according to claim 1, wherein the metal case is a flat rectangular body or a flat trapezoidal body composed of a case cover and a case bottom.

3. The pendulum travel switch of claim 1, wherein the curved elbow has a cross-section that is one of a round tubular cross-section and a square tubular cross-section.

4. The pendulum type position switch according to claim 1, wherein the curved elbow is fixed to the inside of the metal case by means of a clip and a screw at a position near both ends of the curved elbow, or an arc groove is formed on the inside of the metal case, and the curved elbow is fitted into the arc groove.

5. The pendulum travel switch of claim 1, wherein the metal bead and the conductive metal pole pieces at the two ends of the arc-shaped bent tube form an open point of the switch when the metal case is in a vertical state, and the metal bead and the conductive metal pole pieces at the middle of the arc-shaped bent tube form a closed point of the switch.

6. The pendulum-type travel switch according to claim 1, wherein the collision portion of the metal case is a middle-lower portion of the narrow side of the case, the metal case can rotate around the pin at the hanging hole 6 after collision, and the closed point inside the metal case becomes an open point and the open point becomes a closed point.

Technical Field

The invention relates to a travel switch, in particular to a pendulum travel switch.

Background

At present, proximity switches, micro-switches and common travel switches used for traveling limit protection of various moving machines of metallurgical enterprises are frequently damaged due to large dust and water vapor on site and scraping and touching of equipment and materials in the using process, so that the overhauling workload of maintainers is increased, spare parts are more in consumption, efficient automatic production cannot be realized, and the operating efficiency of the equipment is influenced.

Disclosure of Invention

The invention aims to provide a pendulum type travel switch, which is used for prolonging the online service life of elements, improving the operation reliability of the elements, reducing operation faults and reducing the workload of maintenance personnel; reduce the consumption level of spare parts and improve the production efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pendulum type travel switch is characterized in that a section of arc-shaped bent pipe made of insulating materials is fixed below the inner part of a metal box body, two circular insulating plates are respectively packaged at two ends of the arc-shaped bent pipe, two gaps are formed in the insulating plates, a conductive metal pole piece is inserted into each gap and is fixed on the insulating plates by using an adhesive, each metal pole piece positioned on the inner side of each insulating plate is bent by an angle, and a lead-out wire is welded on each metal pole piece positioned on the outer part of each insulating plate; two longitudinal gaps are formed in the lowest position of the center of the interior of the arc-shaped bent pipe, a conductive metal pole piece is inserted into each gap and is fixed by an adhesive, each metal pole piece located in the interior of the arc-shaped bent pipe is bent outwards at an angle and is attached to the inner surface of the arc-shaped bent pipe, and a lead-out wire is welded on each metal pole piece located outside the arc-shaped bent pipe; a metal bead is arranged in the arc-shaped bent pipe and can roll in the arc-shaped bent pipe; the arc-shaped bent tube is fixed in the metal box body by a foaming agent sealing material, and the lead-out wires on each conductive metal pole piece are led out from the opening on the side surface of the upper part of the metal box body; the top of the metal box body is welded with a hanging plate, and the hanging plate is provided with a hanging hole for hanging the metal box body on an external pin shaft.

The metal box body is a flat rectangular body or a flat trapezoid body and consists of a box cover and a box bottom.

The section of the arc-shaped bent pipe is a circular pipe-shaped section or a square pipe-shaped section.

The fixing mode of the arc-shaped bent pipe is that the arc-shaped bent pipe is fixed on the inner side of the metal box body by a hoop and a screw at the position close to the two end parts, or an arc-shaped groove is processed on the inner side of the metal box body, and the arc-shaped bent pipe is embedded in the arc-shaped groove.

When the metal box body is in a vertical state, the metal bead and the conductive metal pole pieces at the two ends of the arc-shaped bent pipe form an opening point of the switch, and the metal bead and the conductive metal pole pieces in the middle of the arc-shaped bent pipe form a closing point of the switch.

The collision part of the metal box body is the middle lower part of the narrow surface of the box body, the metal box body can rotate around the pin shaft at the position of the hanging hole 6 after collision, the closed point inside the metal box body becomes an open point, and the open point becomes a closed point.

Compared with the prior art, the invention has the beneficial effects that:

the pendulum travel switch adopts the iron shell and the flexible filling material, so that the element has higher protection level, the anti-collision capacity and the anti-damage performance of the pendulum travel switch are greatly improved, the use of the pendulum travel switch cannot be influenced when the card is scraped, and meanwhile, the pendulum hook design is adopted, so that the pendulum travel switch is more convenient and simpler in equipment replacement, has lower requirement on installation precision and shortens the maintenance processing time. Therefore, the pendulum travel switch can greatly save spare part cost, reduce production cost and greatly reduce the influence of the fault of a switching device on production.

Drawings

Fig. 1 is a schematic view of the overall structure of the pendulum type travel switch of the present invention.

Fig. 2 is a schematic diagram of the use of a pendulum travel switch.

In the figure: 1-arc bent pipe, 2-conductive metal pole piece, 3-insulating board, 4-metal box, 5-hanging board, 6-hanging hole, 7-outlet hole, 8-lead and 9-metal bead.

Detailed Description

The specific structure of the pendulum type position switch of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the pendulum type travel switch of the invention is characterized in that a section of arc-shaped bent pipe 1 made of an insulating material is fixed at the lower part inside a metal box body 4, two ends of the arc-shaped bent pipe 1 are respectively packaged with two round insulating plates 3, two gaps are arranged on the insulating plates 3, a conductive metal pole piece 2 is inserted into each gap and fixed on the insulating plates 3 by using an adhesive, each metal pole piece 2 positioned at the inner side of the insulating plates 3 is bent at an angle, and a lead-out wire 8 is welded on each metal pole piece 2 positioned outside the insulating plates 3 (in fig. 1 and 2, for the purpose of clear expression, only two conductive metal pole pieces are painted with a wire, and the rest are not shown); two longitudinal gaps are formed in the lowest position of the center of the interior of the arc-shaped bent pipe 1, a conductive metal pole piece 2 is inserted into each gap and is fixed well by using an adhesive, each metal pole piece 2 located in the interior of the arc-shaped bent pipe 1 is bent outwards at an angle to be attached to the inner surface of the arc-shaped bent pipe 1, and a lead-out wire 8 is welded on each metal pole piece 2 located outside the arc-shaped bent pipe 1; a metal bead 9 is arranged in the arc-shaped bent pipe 1, and the metal bead 9 can roll in the arc-shaped bent pipe 1; the arc-shaped bent pipe 1 is fixed inside the metal box body 4 by a foaming agent sealing material, and the lead-out wires 8 on each conductive metal pole piece 2 are led out from the openings 7 on the side surface of the upper part of the metal box body 4; the top of the metal box body 4 is welded with a hanging plate 5, and the hanging plate 5 is provided with a hanging hole 6 for hanging the metal box body 4 on an external pin shaft.

The metal box body 4 is a flat rectangular body or a flat trapezoid body and consists of a box cover and a box bottom.

The section of the arc-shaped bent pipe 1 is a circular pipe-shaped section or a square pipe-shaped section.

The fixing mode of the arc-shaped bent pipe 1 is that the arc-shaped bent pipe 1 is fixed on the inner side of the metal box body 4 by a hoop and a screw at the position close to the two end parts, or an arc-shaped groove is processed on the inner side of the metal box body 4, and the arc-shaped bent pipe 1 is embedded in the arc-shaped groove.

When the metal box body 4 is in a vertical state, the metal bead 9 and the conductive metal pole pieces 2 at the two ends of the arc-shaped bent pipe 1 form an opening point of a switch, and the metal bead 9 and the conductive metal pole pieces 2 in the middle of the arc-shaped bent pipe 1 form a closing point of the switch.

The collision part of the metal box body 4 is the middle-lower part of the narrow surface of the box body, after collision, the metal box body 4 can rotate around the pin shaft at the hanging hole 6, the closed point inside the metal box body becomes the open point, and the open point becomes the closed point.

The pendulum type travel switch controls the metal beads 9 in the arc-shaped bent pipe 1 to roll through gravity, the metal beads respectively contact the conductive metal pole pieces 2 at the two ends of the arc-shaped bent pipe 1 and the lowest point in the middle of the arc-shaped bent pipe 1, the on-off function of contacts is realized, and lead-out wires 8 are respectively supplied to an external circuit for connection according to the use modes of normally-open contacts and normally-closed contacts. And the pendulum type travel switch is hung on an external pin shaft by utilizing a hanging hole 6 at the top to form a state capable of swinging. When the moving machine impacts the travel switch, the travel switch cannot be damaged, and when the moving machine leaves, the travel switch stops after a plurality of swings with decreasing amplitudes to wait for the next limit control. The normally open or normally closed contact signal of the pendulum type travel switch is transmitted to the control relay or the PLC to control the running contactor to be disconnected, so that the running equipment can be controlled to stop.

Compared with the prior art, the invention has the beneficial effects that:

the pendulum travel switch adopts the iron shell and the flexible filling material, so that the element has higher protection level, the anti-collision capacity and the anti-damage performance of the pendulum travel switch are greatly improved, the use of the pendulum travel switch cannot be influenced when the card is scraped, and meanwhile, the pendulum hook design is adopted, so that the pendulum travel switch is more convenient and simpler in equipment replacement, has lower requirement on installation precision and shortens the maintenance processing time. Therefore, the pendulum travel switch can greatly save spare part cost, reduce production cost and greatly reduce the influence of the fault of a switching device on production.