Self-weight type photoelectric switch limiting device

Abstract

The utility model discloses provide a self-weight formula photoelectric switch stop device, including base, sliding assembly, connecting assembly and photoelectric switch subassembly, and the stationary part of base is opposite fixed with target equipment, and sliding assembly includes fixed installation on the slide bar base of base, and two slide bars of parallel connection on the slide bar base and two sliding blocks of respectively slidablely cover in two slide bars, and connecting assembly includes the counterweight of connecting between two sliding blocks, the pulley of rotatable connection in counterweight and connecting rope, and the one end of connecting rope is opposite fixed with slide bar and is used for and the movable part of target equipment is connected in the other end, and photoelectric switch subassembly is installed in base, and photoelectric switch subassembly is used for detecting the height position of counterweight. The application scheme of the utility model, avoided the displacement of the movable part of target equipment when target equipment was impacted, improved the stability of the height position measurement of the movable part of target equipment.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and in particular to a self-weight photoelectric switch limit device. Background Technology

[0002] In automated production, proximity switches are key components for controlling the movement and position of equipment and facilities. Typically, a proximity switch is fixed to a stationary part of the equipment. When a moving part of the equipment enters the effective sensing distance range of the proximity switch, the switch generates a feedback signal.

[0003] However, in actual production, moving parts of the equipment may be impacted, causing them to shift position when approaching the proximity switch. This makes the moving parts highly susceptible to colliding with the proximity switch, leading to damage and signal failure. Conversely, if the shifted moving parts are relatively far from the proximity switch, signal failure will also occur. Utility Model Content

[0004] To address the aforementioned issues, this application provides a self-weight photoelectric switch limit device.

[0005] This application provides a self-weight photoelectric switch limiting device, including a base, a sliding assembly, a connecting assembly, and a photoelectric switch assembly. The base is fixed relative to the stationary part of the target device. The sliding assembly includes a slide rod base fixedly installed on the base, two slide rods connected in parallel to the slide rod base, and two sliders slidably sleeved on the two slide rods. The connecting assembly includes a counterweight block connected between the two sliders, a pulley rotatably connected to the counterweight block, and a connecting rope. The connecting rope is wound around the pulley, with one end fixed relative to the slide rod and the other end used to connect to the moving part of the target device. The photoelectric switch assembly is installed on the base and is used to detect the height position of the counterweight block.

[0006] In some embodiments, the sliding assembly further includes a connecting cover plate, which is connected between at least two sliding rods. The connecting cover plate is located at the bottom end of the sliding rods and is relatively far from the bottom end of the sliding rods. The connecting cover plate has a through hole, and one end of a connecting rope is fixedly connected to the connecting cover plate and passes through the through hole.

[0007] In some implementations, the connecting cover is connected to the top of both slide bars.

[0008] In some embodiments, the counterweight has a slot, which forms an opening on the top side of the counterweight. A pulley is rotatably mounted in the slot via a pin, which is connected to the counterweight.

[0009] In some implementations, the slot extends through the top and bottom sides of the counterweight.

[0010] In some embodiments, the photoelectric switch assembly includes:

[0011] The reflector is mounted on the base;

[0012] The first bracket is mounted on the base and is positioned on opposite sides of the counterweight, along with the reflector; and

[0013] At least one photoelectric switch is mounted on the first bracket.

[0014] In some embodiments, the photoelectric switch assembly includes at least two photoelectric switches, which are mounted at a distance from each other along the height direction on the first bracket.

[0015] In some embodiments, the photoelectric switch assembly includes a second bracket fixedly mounted on a base, and a reflector detachably inserted into the second bracket.

[0016] In some implementations, the base has screw holes for use with bolts to connect the base to the stationary part of the target device.

[0017] In some embodiments, the self-weight photoelectric switch limiting device includes an external component, which includes a base and a housing. The housing is connected to the base and forms an inner cavity between the base and the housing. A sliding component and a photoelectric switch component are disposed in the inner cavity, and a connecting rope passes through the housing.

[0018] The beneficial effects of this application are as follows: It provides a self-weight photoelectric switch limiting device, including a base, a sliding assembly, a connecting assembly, and a photoelectric switch assembly. The sliding rod of the sliding assembly limits the movement trajectory of the counterweight. A connecting rope establishes a connection constraint between the counterweight and the moving part of the target equipment. The connecting rope has the characteristic of constant length, allowing the height position of the counterweight to reflect the height position of the moving part of the target equipment. The photoelectric switch assembly detects the height position of the counterweight. When the counterweight blocks the photoelectric switch of the photoelectric switch assembly, a position signal feedback is generated, thereby realizing the measurement and determination of the height position of the moving part of the target equipment. Applying this application's solution, the connecting rope achieves a flexible connection between the moving part of the target equipment and the counterweight. The relative position of the photoelectric switch assembly and the sliding rod remains unchanged, avoiding the adverse effects of displacement of the moving part of the target equipment when impacted, thus improving the stability of the height position measurement of the moving part of the target equipment. Furthermore, the movable pulley structure, which combines the pulley and the connecting rope, achieves the beneficial effect of measuring a large stroke with a small stroke. The flexible installation position of the base on site makes this application's solution highly adaptable to different environments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0020] Figure 1 A schematic diagram of the external structure of a self-weight photoelectric switch limit device provided in this application;

[0021] Figure 2 A schematic diagram of the internal structure of a self-weight photoelectric switch limit device provided in this application;

[0022] Figure 3 This is a partial structural diagram of the connection component of a self-weight photoelectric switch limit device provided in this application.

[0023] Attached diagram labels: 101-base, 102-outer shell, 201-slide bar base, 202-first slide bar, 203-second slide bar, 204-first slider, 205-second slider, 206-connecting cover plate, 301-counterweight, 302-pin, 303-pulley, 304-connecting rope, 401-first bracket, 402-second bracket, 403-reflector, 404-first photoelectric switch, 405-second photoelectric switch. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] Please refer to Figures 1 to 3 This application provides a self-weight photoelectric switch limiting device, including a base 101, a sliding assembly, a connecting assembly, and a photoelectric switch assembly. This application is used to detect the height position of a moving part of a target device to determine the height position of that moving part.

[0027] The target equipment includes a stationary part and a moving part. The stationary part is relatively fixed, while the moving part is movable relative to the stationary part. In actual production, for example, to determine the position of a slab on the conveyor rollers, an angle steel that can be raised and lowered between two adjacent conveyor rollers is needed to determine whether the slab is in a preset position. In this application, the base 101 is fixed relative to the stationary part of the target equipment, and the connecting assembly is connected to the moving part of the target equipment.

[0028] Please refer to Figure 2 The sliding assembly includes a slide base 201, two slide rods, and two sliders. Figure 2 The two sliders are labeled as slider 202 and slider 203 respectively. Figure 2 The two sliders are labeled as the first slider 204 and the second slider 205, respectively. The slider base 201 is fixedly installed on the base 101. The first slider 202 and the second slider 203 are both connected to the slider base 201 and are distributed side by side. The first slider 204 and the second slider 205 are slidably sleeved on the first slider 202 and the second slider 203, respectively.

[0029] Please refer to the reference. Figures 1 to 3 The connecting assembly includes a counterweight 301, a pulley 303, and a connecting rope 304. The counterweight 301 is connected between the first slider 204 and the second slider 205. The pulley 303 is rotatably connected to the counterweight 301. One end of the connecting rope 304 is fixed relative to the sliding rod, and the rope body of the connecting rope 304 is wound around the pulley 303. The other end of the connecting rope 304 is connected to the moving part of the target device. The height position of the counterweight 301 is detected by a photoelectric switch assembly installed on the base 101.

[0030] This application defines the movement trajectory of the counterweight 301 by using the sliding rod of the sliding component. The counterweight 301 is connected to the moving part of the target device by the connecting rope 304. The connecting rope 304 has the characteristic of constant length, so that the height position of the counterweight 301 can reflect the height position of the moving part of the target device. The height position of the counterweight 301 is detected by the photoelectric switch component. When the counterweight 301 blocks the photoelectric switch of the photoelectric switch component, a position signal feedback is generated, thereby realizing the measurement and determination of the height position of the moving part of the target device.

[0031] By applying the solution of this application, the moving parts of the target equipment and the counterweight 301 are flexibly connected by the connecting rope 304. The relative position of the photoelectric switch assembly and the slide bar remains unchanged, avoiding the adverse effects of the displacement of the moving parts of the target equipment when the target equipment is hit on the measurement, and improving the stability of the height position measurement of the moving parts of the target equipment.

[0032] Furthermore, the movable pulley 303 structure, which cooperates with the connecting rope 304, achieves the beneficial effect of measuring a large stroke with a small stroke. The base 101 can be flexibly installed on site, making the solution of this application highly adaptable to the site.

[0033] In some embodiments, the sliding assembly further includes a connecting cover plate 206, which is connected between at least two sliding rods. The connecting cover plate 206 is located relatively away from the bottom end of the sliding rods. One end of the connecting rope 304 is fixedly connected to the connecting cover plate 206, thereby achieving the aforementioned functional limitation of fixing one end of the connecting rope 304 to the sliding rod. The other end of the connecting rope 304 is connected to the moving part of the target device. The connecting cover plate 206 has a through hole through which the connecting rope 304 passes. This installation method of the pulley 303 and the connecting rope 304 enables the measurement of a large stroke with a small stroke, which helps to reduce the longitudinal dimensions of the present application, making the present application more compact and more suitable for on-site installation.

[0034] In some implementation methods, please refer to Figure 2 The connecting cover plate 206 is connected to the top of both slide rods. The connecting cover plate 206 is located at the top of the slide rods, and the connecting cover plate 206 can prevent the slider from falling off the slide rods.

[0035] Regarding the installation method of pulley 303 on counterweight 301, please refer to the following in some implementation methods: Figure 3 The counterweight 301 has a slot, which forms an opening on the top side of the counterweight 301. A pin 302 is installed in the slot wall formed by the slot in the counterweight 301. The pin 302 is connected to the counterweight 301. The pulley 303 is rotatably installed in the slot through the pin 302, thereby realizing the installation of the pulley 303 inside the counterweight 301. This makes the outer surface of the counterweight 301 flat and regular. In particular, the side of the counterweight 301 facing the photoelectric switch of the photoelectric switch assembly is a plane, which makes the measurement results more accurate.

[0036] In some implementations, the slot is a through-slot design, see details below. Figure 3 The slots extend through the top and bottom sides of the counterweight 301, which is beneficial for the assembly of the pulley 303.

[0037] In some implementation methods, please refer to Figure 2The photoelectric switch assembly includes a reflector 403, a first bracket 401, and at least one photoelectric switch. The reflector 403 is mounted on a base 101, and the first bracket 401 is also mounted on the base 101. The first bracket 401 and the reflector 403 are respectively located on opposite sides of a counterweight 301. At least one photoelectric switch is mounted on the first bracket 401. The photoelectric switch utilizes the blocking or reflection of the light beam by the object being detected to activate the circuit via a synchronization circuit, thereby detecting the presence or absence of the object.

[0038] When there is only one photoelectric switch, the height position of the photoelectric switch needs to be specifically designed. When the photoelectric switch detects that the counterweight 301 is blocking, the height position of the counterweight 301 reflects the height position of the moving part of the target device. At this time, the moving part of the target device is at the lowest high position.

[0039] In conjunction with the above explanation that "in order to determine the position of the slab on the conveyor roller, an angle steel that can be raised and lowered between two adjacent conveyor rollers is needed to determine whether the slab is in the preset position," when the moving part of the target equipment is lower than the lowest high position, it means that the moving part of the target equipment will not affect the passage of the slab.

[0040] In some implementation methods, please refer to Figure 2 The photoelectric switch assembly includes at least two photoelectric switches, which are mounted at intervals along the height direction on the first bracket 401. For example... Figure 2 The first photoelectric switch 404 and the second photoelectric switch 405 shown are mounted on the first bracket 401 at intervals along the height direction. The height position of the second photoelectric switch 405 represents that the active part of the target device is at a high position, and the height position of the first photoelectric switch 404 represents that the active part of the target device is at a low position. The high and low positions of the active parts of the target device can be determined by the solution of this application.

[0041] In more feasible implementations, there can be three or more photoelectric switches to detect and determine whether the photoelectric switch is in a high, middle, or low position.

[0042] In some implementation methods, please refer to Figure 2 The photoelectric switch assembly includes a second bracket 402, which is fixedly mounted on the base 101. The reflector 403 is detachably inserted into the second bracket 402, making it easy to replace the reflector 403.

[0043] In some embodiments, the base 101 has a screw hole, which is used to cooperate with a bolt to connect the base 101 to the stationary part of the target device.

[0044] In some embodiments, the self-weight photoelectric switch limiting device includes an external component, which includes a base 101 and a housing 102. The housing 102 is connected to the base 101 and forms an inner cavity between the housing and the base 101. The sliding component and the photoelectric switch component are disposed in the inner cavity, and the connecting rope 304 passes through the housing 102. In this case, the housing 102 acts as a protective shell, which can mitigate the adverse effects of the environment on the present application.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A self-weight photoelectric switch limit device, characterized in that, include: The base is used to fix the target device relative to its stationary parts. The sliding assembly includes a slide rod base fixedly mounted on the base, two slide rods connected in parallel to the slide rod base, and two sliders slidably sleeved on the two slide rods respectively; The connecting assembly includes a counterweight connected between the two sliders, a pulley rotatably connected to the counterweight, and a connecting rope. The connecting rope is wound around the pulley, with one end fixed relative to the sliding rod and the other end used to connect to a moving part of the target device. A photoelectric switch assembly is mounted on the base, and the photoelectric switch assembly is used to detect the height position of the counterweight.

2. The self-weight photoelectric switch limit device as described in claim 1, characterized in that, The sliding component also includes: A connecting cover plate is connected between at least two of the slide rods. The connecting cover plate is located away from the bottom end of the slide rod. One end of the connecting rope is fixedly connected to the connecting cover plate. The connecting cover plate has a through hole through which the connecting rope passes.

3. The self-weight photoelectric switch limit device as described in claim 2, characterized in that, The connecting cover plate is connected to the top of both slide rods.

4. The self-weight photoelectric switch limit device as described in claim 1, characterized in that, The counterweight has a slot, which forms an opening on the top side of the counterweight. The pulley is rotatably mounted in the slot via a pin, which is connected to the counterweight.

5. The self-weight photoelectric switch limit device as described in claim 4, characterized in that, The slot extends through the top and bottom sides of the counterweight.

6. The self-weight photoelectric switch limit device as described in any one of claims 1-5, characterized in that, The photoelectric switch assembly includes: A reflector is mounted on the base; The first bracket is mounted on the base and is positioned on opposite sides of the counterweight, respectively, along with the reflector. At least one photoelectric switch is mounted on the first bracket.

7. The self-weight photoelectric switch limit device as described in claim 6, characterized in that, The photoelectric switch assembly includes at least two photoelectric switches, which are mounted at intervals along the height direction on the first bracket.

8. The self-weight photoelectric switch limit device as described in claim 6, characterized in that, The photoelectric switch assembly includes a second bracket, which is fixedly mounted on the base, and the reflector is detachably inserted into the second bracket.

9. The self-weight photoelectric switch limit device as described in claim 1, characterized in that, The base has a screw hole, which is used to connect the base to the stationary part of the target device in conjunction with a bolt.

10. The self-weight photoelectric switch limit device as described in any one of claims 1-5, characterized in that, The self-weight photoelectric switch limiting device includes an external component, which includes the base and the outer shell. The outer shell is connected to the base and forms an inner cavity with the base. The sliding component and the photoelectric switch component are disposed in the inner cavity, and the connecting rope passes through the outer shell.

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