CN219553458U - Travel limit switch of explosion-proof electric control door - Google Patents

Abstract

The utility model discloses a travel limit switch of an explosion-proof electric control door, which comprises a switch shell, wherein a built-in switch is arranged in the switch shell, a sealing cover is arranged on the front end surface of the switch shell, a nameplate is arranged on the front end surface of the sealing cover, first bolts are connected at four corners of the sealing cover in a threaded manner, first thread grooves are formed at four corners of the switch shell, the top of the switch shell is fixedly connected with a mounting seat, the top of the mounting seat is provided with a head, a driving rod is arranged on the head, two sides of the top of the switch shell are connected with second bolts in a threaded manner, second thread grooves are formed in two sides of the top of the mounting seat, a conduit opening is formed in the bottom of the switch shell, a sealing plug is connected with inner threads of the conduit opening, a rotating block is fixedly connected at the bottom of the sealing plug, and a threading hole is formed in the center of the rotating block and the sealing plug. The utility model has good sealing performance, dust or moisture is not easy to enter, and wires such as a connecting wire and the like can be limited and fixed, so that the normal work of the travel limit switch is prevented from being influenced by winding and bending of the connecting wire.

Description

Travel limit switch of explosion-proof electric control door

Technical Field

The utility model belongs to the technical field of travel limit switches, and particularly relates to a travel limit switch of an explosion-proof electric control door.

Background

The explosion-proof electric control door is an explosion-proof door which is opened and closed by an electromagnetic lock, the explosion-proof travel limit switch is a travel limit switch, can be used in an environment with explosive gas, has the functions of controlling the travel of the explosion-proof electric control door equipment and limiting protection, and is an important component of the explosion-proof electric control door.

At present, some travel limit switches exist on the market, for example, an explosion-proof travel switch is disclosed on the Chinese patent network, the publication number of which is CN204695996U, and the travel limit switch can be used on an explosion-proof electric control door, but the existing travel limit switch has some defects: (1) Poor tightness, and gaps are easily generated between the shell and the sealing cover of the travel limit switch due to disassembly, so that dust or moisture and the like enter the travel limit switch, and the service life of related elements is influenced; (2) Wire rods such as connecting wires are difficult to limit and fix, and the connecting wires are easy to wind and bend in the using process, so that the normal work of the travel limit switch is affected. Therefore, aiming at the problems, the travel limit switch of the explosion-proof electric control door provided by the utility model has important significance.

Disclosure of Invention

The utility model provides a travel limit switch of an explosion-proof electric control door, which solves the problems.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model discloses a travel limit switch of an explosion-proof electric control door, which comprises a switch shell, wherein a built-in switch is arranged in the switch shell, a sealing cover is arranged on the front end surface of the switch shell, a nameplate is arranged on the front end surface of the sealing cover, first bolts are connected to the four corners of the sealing cover in a threaded manner, first thread grooves matched with the first bolts are formed in the four corners of the switch shell, an installation seat is fixedly connected to the top of the switch shell, a head is arranged at the top of the installation seat, a driving rod is arranged on the head, second bolts are connected to the two sides of the top of the installation seat in a threaded manner, second thread grooves matched with the second bolts are formed in the two sides of the top of the installation seat, a conduit opening is formed in the bottom of the switch shell, a sealing plug is connected to the inner threads of the conduit opening, a rotating block is fixedly connected to the bottom of the sealing plug, and a threading hole is formed in the center of the rotating block and the sealing plug.

Further, the rear end face of the sealing cover is fixedly connected with a lug, the cross section of the lug is rectangular, the length and the width of the lug are respectively equal to the length and the width of the inner wall of the switch shell, and the surface of the side wall of the lug is fixedly connected with a layer of sealing gasket.

Further, a wire harness tube is arranged above the sealing plug, the wire harness tube and the center of the threading hole are located on the same straight line, connecting blocks are fixedly connected to the outer walls of the two sides of the wire harness tube, and the bottoms of the connecting blocks are fixedly connected to the sealing plug.

Further, the top and bottom front end surfaces of the switch shell are fixedly connected with positioning columns, positioning holes are formed in the top and bottom surfaces of the nameplate, the diameter of each positioning hole is equal to that of each positioning column, and the positioning holes and the centers of the corresponding positioning columns are located on the same straight line.

Further, the front end face of the switch shell is fixedly connected with a pair of limiting blocks, the limiting blocks are attached to two sides of the nameplate, the front face of the limiting blocks is C-shaped, and the length of the inner wall of each limiting block is equal to that of the nameplate.

Further, the bottom fixedly connected with fixture block of head, the draw-in groove has been seted up to the top surface of mount pad, the cross section of draw-in groove and fixture block is the rectangle, just the length of the groove of draw-in groove and groove width correspond equally with the length and the width of fixture block respectively.

Further, the side wall of the rotary block is arc-shaped and inwards concave, and the surface of the rotary block is carved with herringbone anti-skid patterns.

Compared with the prior art, the utility model has the following beneficial effects:

(1) When the travel limit switch is used, the interior of the switch shell and the conduit opening can be respectively sealed through the sealing cover and the sealing plug, and gaps between the sealing cover and the switch shell can be filled through the sealing gasket on the side wall of the convex block, so that gaps between the switch shell and the sealing cover caused by disassembly are effectively prevented, and dust or moisture is prevented from entering the switch shell to affect the service life of related elements;

(2) When the travel limit switch is used, the connecting wire can be limited and fixed through the wire harness tube, so that the connecting wire is effectively prevented from being wound and bent to influence the normal operation of the travel limit switch;

(3) When the travel limit switch is used, the related parameters such as manufacturers, models and the like of the travel limit switch can be marked by the nameplate, the nameplate can be fixedly arranged on the front end surface of the sealing cover through the mutual matching between the positioning column and the positioning hole, and the nameplate can be limited by the limiting blocks on the two sides, so that the stability of the nameplate after being arranged is effectively improved, and the loosening and the deviation of the nameplate are prevented;

(4) When the travel limit switch is used, the sealing cover can be detached from the switch shell by screwing down the first bolt so as to overhaul related elements in the switch shell when faults occur, and the head part and the driving rod can be detached from the switch shell together by screwing down the second bolt so as to be replaced according to the needs, so that the travel limit switch is suitable for explosion-proof electric control doors of different types.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a three-dimensional structure of a travel limit switch of an explosion-proof electric control door of the present utility model;

fig. 2 is a schematic diagram of a front structure of a travel limit switch of an explosion-proof electric control door according to the present utility model;

FIG. 3 is a front cross-sectional view of the switch housing of the present utility model;

fig. 4 is a side structural cross-sectional view of the switch housing and seal cover of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a switch housing; 2. a built-in switch; 3. sealing cover; 4. a nameplate; 5. a first bolt; 6. a first thread groove; 7. a mounting base; 8. a head; 9. a driving rod; 10. a second bolt; 11. a second thread groove; 12. a conduit opening; 13. a sealing plug; 14. rotating the block; 15. a threading hole; 16. a bump; 17. a sealing gasket; 18. a wire harness tube; 19. a connecting block; 20. positioning columns; 21. positioning holes; 22. a limiting block; 23. a clamping block; 24. a clamping groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "opposite," "one end," "interior," "transverse," "end," "both ends," "two sides," "front," "one end face," "the other end face," and the like indicate orientations or positional relationships, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the components or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-4, the utility model discloses a travel limit switch of an explosion-proof electric control door, which comprises a switch shell 1, wherein a built-in switch 2 is arranged in the switch shell 1, the built-in switch 2 adopts a quick-action mechanism, the type of the built-in switch 2 is the built-in switch 2 which is the same as an LX5-211 explosion-proof travel switch in the prior art and can be directly purchased in the market, the switch shell 1 is made of metal or resin, the mechanical strength is excellent, the built-in switch 2 can be sealed and protected, a sealing cover 3 is arranged on the front end surface of the switch shell 1, a nameplate 4 is arranged on the front end surface of the sealing cover 3, the nameplate 4 is used for marking manufacturer, model and other parameters of the travel limit switch, the four corners of the sealing cover 3 are connected with first bolts 5 in a threaded manner, first thread grooves 6 matched with the first bolts 5 are arranged at the four corners of the switch shell 1, the tail end of each first bolt 5 can be screwed into the corresponding first thread groove 6 respectively, the sealing cover 3 can be fixedly arranged on the switch shell 1 through the mutual matching between the first bolt 5 and the first thread groove 6 so as to seal the inside of the switch shell 1, the top of the switch shell 1 is fixedly connected with the mounting seat 7, the top of the mounting seat 7 is provided with the head 8, the head 8 is provided with the driving rod 9, the two sides of the top of the head 8 are respectively connected with the second bolt 10 in a threaded manner, the two sides of the top of the mounting seat 7 are respectively provided with the second thread groove 11 matched with the second bolt 10, the tail end of the second bolt 10 can be screwed into the corresponding second thread groove 11, the head 8 and the driving rod 9 can be fixedly arranged on the switch shell 1 together through the mutual matching between the second bolt 10 and the second thread groove 11, the driving rod 9 and the head 8 jointly form a driving mechanism, the internal switch 2 can be sealed by a movable part connecting an external driving mechanism and an internal mechanism through a ring or a sealing piece by transmitting force or action from outside to the internal switch 2 through an internal plunger, the internal switch 2 is sealed in the internal switch 2, the head 8 and the driving rod 9 are of the prior art which can be purchased directly in the market, the type of the internal switch is the same as that of an LX5-211 explosion-proof travel switch, the head 8 and the driving rod 9 can be detached from the switch shell 1 together with the driving rod 9 through screwing down a second bolt 10 so as to be replaced according to the requirement, a conduit port 12 is formed at the bottom of the switch shell 1, the conduit port 12 is used for fixing an external connecting wire and sealing and protecting the internal mechanism, a sealing plug 13 is connected in an internal thread mode, the conduit port 12 can be sealed through the sealing plug 13 so as to effectively prevent dust, moisture and the like from entering the switch shell 1 through the conduit port 12 and affecting the service life of related elements such as the internal switch 2, the bottom of the sealing plug 13 is fixedly connected with a rotary block 14, a threading hole 15 is formed in the center of the rotary block 14 and the sealing plug 13, and the connecting wire can penetrate through the threading hole 15 and be electrically connected with the pin on the switch 2.

The rear end face of the sealing cover 3 is fixedly connected with a protruding block 16, the cross section of the protruding block 16 is rectangular, the length and the width of the protruding block are respectively equal to the length and the width of the inner wall of the switch shell 1, a layer of sealing gasket 17 is fixedly connected to the surface of the side wall of the protruding block 16, the sealing gasket 17 is made of rubber and is elastic, when the sealing cover 3 is fixedly installed on the switch shell 1, the protruding block 16 can be attached to the inner wall of the switch shell 1, at the moment, gaps generated by detachment between the sealing cover 3 and the switch shell 1 can be filled through the sealing gasket 17, and therefore dust or moisture can be effectively prevented from entering the switch shell 1 through the gaps to affect the service life of related elements.

Wherein, the top of sealing plug 13 is provided with beam tube 18, and beam tube 18 is located same straight line with the center of through wires hole 15, and the equal fixedly connected with connecting block 19 of its both sides outer wall, the bottom fixed connection of connecting block 19 is on sealing plug 13, when the connecting wire pass through wires hole 15 and with the pin electric connection on the built-in switch 2, can carry out spacing and fixed to the connecting wire through beam tube 18 to effectively prevent that the connecting wire from taking place winding and crooked and influencing this travel limit switch's normal work.

Wherein, terminal surface all fixedly connected with reference column 20 before the top of switch shell 1 and the bottom, the locating hole 21 has all been seted up to the top and the bottom surface of data plate 4, and the aperture of locating hole 21 equals with the diameter of reference column 20, and locating hole 21 and the reference column 20 center that corresponds lie in same straight line, and reference column 20 can align and pass corresponding locating hole 21, through the cooperation between reference column 20 and the locating hole 21 can be with data plate 4 fixed mounting at sealed terminal surface before lid 3.

Wherein, the preceding terminal surface fixedly connected with of switch shell 1 is a pair of stopper 22, and stopper 22 laminating is in the both sides of data plate 4, and the positive C font that is of stopper 22, and the inner wall length of stopper 22 equals with the length of data plate 4, when data plate 4 fixed mounting is at the preceding terminal surface of sealed lid 3, can carry out spacingly to data plate 4 through the stopper 22 of both sides to effectively improve the stability after the data plate 4 is installed, thereby prevent that it from producing not hard up and skew.

Wherein, clamping block 23 is fixedly connected with the bottom of head 8, draw-in groove 24 has been seted up to the top surface of mount pad 7, the cross section of draw-in groove 24 and clamping block 23 is the rectangle, and the length and the width of draw-in groove 24 correspond equally with the length and the width of clamping block 23 respectively, when head 8 fixed mounting is at the top of switch shell 1, clamping block 23 can align and insert to in the draw-in groove 24, can carry out spacing to head 8 through the mutually supporting between clamping block 23 and the draw-in groove 24, so that the stability after the head 8 is installed is effectively improved, thereby prevent that it from producing not hard up and skew.

The side wall of the rotary block 14 is arc-shaped and is concave inwards, the surface of the rotary block 14 is carved with herringbone anti-skid patterns, the sealing plug 13 can be screwed by holding the rotary block 14 so as to be convenient for installing and detaching the sealing plug 13, when a person holds the rotary block 14 by hands, fingers can be attached to the arc-shaped side wall of the rotary block 14, friction force between the fingers and the rotary block 14 can be effectively increased by the anti-skid patterns, so that the rotary block 14 is convenient to hold, and slipping are prevented.

The built-in switch 2, the head 8, the driving rod 9 and other circuits, electronic components and chip modules related to the utility model are all in the prior art, and can be completely realized by a person skilled in the art, and needless to say, the utility model does not relate to the improvement of software and methods.

The working principle of the utility model is as follows:

when the utility model is used, the built-in switch 2 can be sealed and protected through the switch shell 1, the built-in switch 2 adopts a quick-action mechanism, the type of the built-in switch 2 can be selected from the built-in switch 2 which is the same as that of an LX5-211 explosion-proof travel switch, first bolts 5 at four corners of the sealing cover 3 are screwed, so that the tail ends of the first bolts 5 are screwed into corresponding first thread grooves 6 respectively, the sealing cover 3 can be fixedly arranged on the switch shell 1 through the mutual matching between the first bolts 5 and the first thread grooves 6 so as to seal the inside of the switch shell 1, when the sealing cover 3 is fixedly arranged on the switch shell 1, a lug 16 can be attached to the inner wall of the switch shell 1, and at the moment, gaps generated by disassembly between the sealing cover 3 and the switch shell 1 can be filled through a sealing gasket 17, so as to effectively prevent dust or moisture from entering the switch housing 1 through the gap to affect the service life of related elements, the top of the mounting seat 7 is provided with a head 8, the head 8 is provided with a driving rod 9, the head 8 and the driving rod 9 can be fixedly mounted on the switch housing 1 through the mutual cooperation between the second bolt 10 and the second thread groove 11, the driving rod 9 and the head 8 jointly form a driving mechanism, the force or action from the outside can be transmitted to the built-in switch 2 through an internal plunger, a movable part connecting the external driving mechanism and the internal mechanism is sealed by a ring or a sealing piece, the built-in switch 2 is sealed in, the head 8 and the driving rod 9 are in the prior art which can be directly purchased in the market, the types of the head 8 and the driving rod 9 can be the same as those of the LX5-211 explosion-proof travel switch, the head 8 and the driving rod 9 can be detached from the switch shell 1 together through screwing down the second bolt 10 so as to be replaced according to the requirement, the front end face of the sealing cover 3 is provided with the nameplate 4, the nameplate 4 is used for marking relevant parameters such as manufacturers and models of the travel limit switch, the nameplate 4 can be fixedly arranged on the front end face of the sealing cover 3 through the mutual matching between the positioning column 20 and the positioning hole 21, when the nameplate 4 is fixedly arranged on the front end face of the sealing cover 3, the nameplate 4 can be limited through limiting blocks 22 on two sides so as to effectively improve the stability of the nameplate 4 after being installed, thereby preventing loosening and deviation of the nameplate 4, the bottom of the switch shell 1 is provided with the conduit opening 12, the conduit opening 12 is used for fixing an external connecting wire and protecting an internal mechanism, the conduit opening 12 is internally connected with the sealing plug 13, the conduit opening 12 can be sealed through the sealing plug 13 so as to effectively prevent dust or moisture and the like from entering the switch shell 1 through the conduit opening 12 to influence the service life of related elements such as the built-in switch 2, the connecting wire can be internally provided with the threading hole 15 and be electrically connected with pins on the switch 2, and the threading connecting wire can be electrically connected with the pin on the switch 2 through the threading hole 15 and the pin through the wiring harness 18 to be electrically connected with the built-in the switch 2 to the wiring harness 18 when the wiring harness is electrically connected with the wiring harness and the wiring harness is normally and prevented from being wound and normally.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. The utility model provides a travel limit switch of explosion-proof automatically controlled door, its characterized in that, including the switch shell, the internally mounted of switch shell has built-in switch, and sealed lid is installed to its preceding terminal surface, the preceding terminal surface of sealed lid is provided with the nameplate, and the equal threaded connection in four angles department of its is provided with the first screw thread groove with first bolt matched with, its top fixedly connected with mount pad, the top of mount pad is provided with the head, be provided with the actuating lever on the head, the equal threaded connection in its top both sides has the second bolt, the conduit mouth has all been seted up with second bolt matched with second screw thread groove in the top both sides of mount pad, conduit mouth is seted up to the bottom of switch shell, conduit mouth internal thread connection has the sealing plug, the bottom fixedly connected with of sealing plug revolves the piece, the threading hole has been seted up with the center of sealing plug to revolve the piece.

2. The travel limit switch of an explosion-proof electric control door according to claim 1, wherein a lug is fixedly connected to the rear end face of the sealing cover, the cross section of the lug is rectangular, the length and the width of the lug are respectively equal to the length and the width of the inner wall of the switch shell correspondingly, and a layer of sealing gasket is fixedly connected to the surface of the side wall of the lug.

3. The travel limit switch of an explosion-proof electric control door according to claim 1, wherein a wire-restraining tube is arranged above the sealing plug, the wire-restraining tube and the center of the wire-restraining hole are positioned on the same straight line, connecting blocks are fixedly connected to the outer walls of two sides of the wire-restraining tube, and the bottoms of the connecting blocks are fixedly connected to the sealing plug.

4. The travel limit switch of an explosion-proof electric control door according to claim 1, wherein the front end surfaces of the top and the bottom of the switch shell are fixedly connected with positioning columns, positioning holes are formed in the top and the bottom surfaces of the nameplate, the diameter of each positioning hole is equal to that of each positioning column, and the positioning holes and the centers of the corresponding positioning columns are located on the same straight line.

5. The travel limit switch of an explosion-proof electric control door according to claim 1, wherein a pair of limiting blocks are fixedly connected to the front end face of the switch shell, the limiting blocks are attached to two sides of a nameplate, the front face of the limiting blocks is C-shaped, and the length of the inner wall of each limiting block is equal to that of the nameplate.

6. The travel limit switch of an explosion-proof electric control door according to claim 1, wherein a clamping block is fixedly connected to the bottom of the head, a clamping groove is formed in the top surface of the mounting seat, the cross sections of the clamping groove and the clamping block are rectangular, and the groove length and the groove width of the clamping groove are respectively equal to the length and the width of the clamping block correspondingly.

7. The travel limit switch of an explosion-proof electronic control door according to claim 1, wherein the side wall of the rotary block is arc-shaped and is concave inwards, and the surface of the rotary block is carved with herringbone anti-skid patterns.