A safety detection device for explosion-proof elevators

Abstract

The present invention relates to the field of special equipment detection technology, and specifically to a safety detection device used in explosion-proof elevators, comprising an upper guide rail and a lower guide rail, and a detection assembly, the detection assembly comprising a protective frame, on which an ejection device is provided; and two sets of triggering members elastically mounted at the bottom of the protective frame and extending toward a workpiece to be detected, the triggering member comprising a guide block movably mounted on the protective frame, and a slider provided at one end of the guide block, a return spring provided between the slider and the protective frame, a switch for controlling the activation of the ejection device provided on the triggering member away from the workpiece entry end, and the ejection device is activated when the triggering member away from the workpiece entry end is squeezed into the protective frame. The present invention cancels the restriction on the top plate by retracting the triggering member, and the top plate squeezes the limiting slider to restrict the relative movement of the protective frame and the workpiece, while activating the ejection device to eject the impactor onto the workpiece, thereby optimizing the inspection steps, reducing the inspection cycle, improving the inspection efficiency, and improving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of special equipment detection, and in particular to a safety detection device applied to explosion-proof elevators. Background Art

[0002] An explosion-proof elevator (Exelevato) is an elevator with explosion-proof performance, used in industries such as petrochemicals, delayed coking units, and fertilizer plants. After production and before being put into use, explosion-proof elevators must undergo strict testing and acceptance to ensure that they comply with explosion-proof safety standards and conventional elevator safety requirements. The safety detection device used in explosion-proof elevators is a device specifically used to detect the performance of explosion-proof elevators.

[0003] Since explosion-proof elevator cars are usually assembled, the maintenance cost of assembled cars is lower than that of one-piece molded cars because maintenance personnel can more easily access and replace damaged parts. Therefore, when inspecting elevator cars, the individual elevator car surfaces are generally fixedly mounted on a bracket. Then a heavy object hits the elevator body to be inspected. The impact object hits the elevator car surface to be inspected and is compared with the standard after the impact, or the grooves after the impact are analyzed to determine whether the inspection car surface meets the requirements.

[0004] In the above technical solution, when the impact object is operated to impact the workpiece, during the repeated impact operation, the technician is required to repeatedly hook and release the heavy object with a spring buckle near the heavy object, and the coordinated operation of various groups of adjustment mechanisms in different parts is required, which has poor safety, increases the inspection cycle, is inconvenient to operate, and reduces the detection efficiency. Summary of the Invention

[0005] In view of the above shortcomings of the prior art, the present invention provides a safety detection device for explosion-proof elevators. To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a safety detection device for an explosion-proof elevator, comprising an upper guide rail and a lower guide rail, and further comprising:

[0007] A detection assembly, the detection assembly comprising a protective frame movably mounted on the upper guide rail and the lower guide rail, the protective frame being provided with an ejection device for launching an impactor toward a workpiece to be detected;

[0008] And two groups of trigger members are elastically installed at the bottom of the protective frame and extend toward the workpiece to be inspected, the trigger member includes a guide block movably installed on the protective frame, and a slider is provided at the end of the guide block away from the workpiece to be inspected, and a return spring is provided between the slider and the protective frame for always squeezing the guide block out of the protective frame, and a switch for controlling the start of the ejection device is provided on the trigger member away from the workpiece entry end, and the ejection device is started when the trigger member away from the workpiece entry end is squeezed into the protective frame.

[0009] According to some embodiments of the present invention, a reset buffer is provided on the upper guide rail, and an elastic band is provided between the reset buffer and the protective frame.

[0010] According to some embodiments of the present invention, a top plate is further included, which is slidably connected to the protective frame through a guide rod, and a slide is provided on the top plate, a guide column is provided on the guide rod, and a limiting groove is provided on the slider. When the slider follows the guide block to retract the protective frame, the limiting groove disengages from the bottom of the guide rod and cancels the support of the top plate.

[0011] According to some embodiments of the present invention, a limiting slider is provided on the side of the protective frame away from the entry end of the workpiece, and an inclined guide groove is provided on the limiting slider. The height of the inclined guide groove close to the guide rail to be mounted is higher than the other side, and the guide column extends into the inclined guide groove.

[0012] According to some embodiments of the present invention, a rotating plate is rotatably installed at the bottom of the protective frame, and a reset member is provided between the rotating shaft of the rotating plate and the protective frame. A gear is coaxially installed on the rotating shaft of the rotating plate, and a rack meshing with the gear is slidably installed on the protective frame. The rack is located below the skateboard and can push the skateboard.

[0013] According to some embodiments of the present invention, the rotating plates are provided in two groups and are symmetrically distributed along the center of the protective frame, and the two groups of rotating plates rotate on a common rotating shaft, and reset members are provided on both sides of the rotating shaft.

[0014] According to some embodiments of the present invention, the switch includes an electrode plate 2 provided on the protective frame and an electrode plate 1 provided on the slider. When the slider is compressed back, the electrode plate 1 in the protective frame contacts the electrode plate 2 and the ejection device is activated.

[0015] According to some embodiments of the present invention, a deceleration assembly is further included, which includes a deceleration column rotatably arranged on electrode plate 2, and a spring-shaped guide groove is provided on the outer peripheral surface of the deceleration column. Electrode plate 1 is connected to the slider through reset spring 2, and electrode plate 1 is slidably connected to the deceleration column. Electrode plate 1 is provided with a fixed column extending into the spring-shaped guide groove.

[0016] According to some embodiments of the present invention, a gap between the deceleration column and the slider is larger than a gap when the slider is fully retracted and moves into the protective frame.

[0017] According to some embodiments of the present invention, the ejection device is provided with an adjustment gear, and the ejection hole on the ejection device is inclined, and the bottom of the slide is provided with a one-way claw for unidirectionally shifting the adjustment gear when rising.

[0018] Beneficial effects

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. The workpiece moves on the upper and lower guide rails and squeezes the two sets of trigger members. As the trigger members retract, the restriction on the top plate is lifted. The top plate drops due to gravity and squeezes the limit slider to move toward the workpiece, thereby limiting the relative movement of the protective frame and the workpiece. As the protective frame moves with the workpiece, the two sets of trigger members are pressed back and trigger the switch, starting the ejection device to eject the impactor onto the workpiece. The subsequent comparison results are used to obtain the test results, which optimizes the inspection steps, reduces the test cycle, improves the test efficiency, and improves safety.

[0021] Second, by setting two sets of rotating and resetting rotating plates at the bottom of the protective frame, when the rotating plates are turned, the driving gear rotates and cooperates with the rack to squeeze and lift the top plate, thereby automatically retracting the limit slider, automatically canceling the restriction between the protective frame and the workpiece, and realizing automatic separation of the protective frame and the workpiece after detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the detection component of the present invention;

[0025] Figure 3 This is a schematic diagram of the explosion structure of the detection assembly of the present invention;

[0026] Figure 4 Schematic diagram of the structure of the guide rail 1 and the guide rail 2 of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection between the rotating plate and the rack of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the deceleration assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the connection between the ejection device and the top plate of the present invention.

[0030] Figure numerals: 1. Upper guide rail; 11. Reset buffer; 2. Lower guide rail; 3. Detection assembly; 31. Protective frame; 32. Trigger; 321. Guide block; 322. Slider; 3221. Limiting groove; 323. Reset spring 1; 33. Top plate; 331. Guide rod; 3311. Guide column; 332. Slide plate; 3321. One-way claw; 34. Ejection device; 341. Electrode plate 1; 342. Electrode plate 2; 343. Adjusting gear; 35. Limiting slider; 351. Oblique guide groove; 36. Rotating plate; 361. Reset member; 362. Gear; 363. Rack; 4. Deceleration assembly; 41. Deceleration column; 411. Spring-shaped guide groove; 412. Fixed column; 42. Reset spring 2. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Refer to the attached Figure 1-7 A safety detection device for explosion-proof elevators includes an upper guide rail 1 and a lower guide rail 2. The upper guide rail 1 and the lower guide rail 2 are fixed by an external bracket, and the lower guide rail 2 is located directly below the upper guide rail 1. The elevator door panel to be inspected (hereinafter referred to as the workpiece) has its upper side extended into the upper guide rail 1 and its lower side extended into the lower guide rail 2. The workpiece is pushed between the upper guide rail 1 and the lower guide rail 2 by an external device, so that the workpiece can be automatically inspected by the inspection equipment. In order to improve the smoothness of the movement of the workpiece between the upper guide rail 1 and the lower guide rail 2, multiple sets of conveyor rollers (not shown in the drawings) are installed on the side of the upper guide rail 1 and the lower guide rail 2 that contacts the workpiece to reduce friction when the workpiece moves. The device also includes:

[0034] A detection component 3 for detecting the strength of a workpiece includes a protective frame 31 movably mounted on the upper guide rail 1 and the lower guide rail 2. Rollers are provided at the top and bottom ends of the protective frame 31, and the rollers extend into the upper guide rail 1 and the lower guide rail 2. The rollers on both sides of the protective frame 31 are respectively located above the upper guide rail 1 and below the lower guide rail 2 to maintain the stability of the detection component 3 and the upper guide rail 1 and the lower guide rail 2 during movement. The protective frame 31 is provided with an ejection device 34 for launching an impact object toward the workpiece to be tested. The ejection device 34 actively ejects the impact object toward the workpiece, and the concave portion formed by the impact force on the workpiece is compared with the specified standard to determine whether the workpiece is qualified.

[0035] And two sets of trigger members 32 elastically mounted at the bottom of the protective frame 31 and extending toward the workpiece to be inspected, the two sets of trigger members 32 are symmetrical along the center of the protective frame 31, and the trigger member 32 close to the workpiece input end will preferentially be squeezed with the workpiece, the trigger member 32 includes a guide block 321 movably mounted on the protective frame 31, and a slider 322 is provided at the end of the guide block 321 away from the workpiece to be inspected. When the guide block 321 is compressed back into the protective frame 31, the slider 322 will move toward the side away from the workpiece accordingly, and a device is provided between the slider 322 and the protective frame 31 for always squeezing the guide block 321 out of the protective frame The reset spring 323 of 31, in the initial state, that is, when the workpiece does not squeeze the guide block 321, the reset spring 323 will pull the slider 322 and push the guide block 321 toward between the upper guide rail 1 and the lower guide rail 2. A switch for controlling the start of the ejection device 34 is provided on the trigger member 32 away from the workpiece entry end. When the trigger member 32 away from the workpiece entry end is squeezed into the protective frame 31, the ejection device 34 is started to work, and then the impactor is ejected toward the workpiece. The ejection device 34 is provided with a feeding pipe located on the opposite side of the injection hole, which is used to add the impactor into the ejection device 34 to realize the detection of subsequent workpieces.

[0036] Specifically, the switch includes an electrode plate 2 342 provided on the protective frame 31 and an electrode plate 1 341 provided on the slider 322. When the slider 322 is compressed back, the electrode plate 1 341 in the protective frame 31 contacts the electrode plate 2 342 and starts the ejection device 34 to work.

[0037] Furthermore, it also includes a top plate 33, which is slidably connected to the protective frame 31 through a guide rod 331, and a slide plate 332 is provided on the top plate 33, a guide column 3311 is provided on the guide rod 331, and a limiting groove 3221 is provided on the slider 322. When the slider 322 follows the guide block 321 to retract into the protective frame 31, the limiting groove 3221 is disengaged from the bottom of the guide rod 331 and the support for the top plate 33 is cancelled. After the guide block 321 near the entry end of the workpiece is squeezed back into the protective frame 31, the slider 322 moves and The restriction on the guide rod 331 is cancelled. However, at this time, since the guide block 321 on the other side is not squeezed into the protective frame 31, the corresponding slider 322 will restrict the descent of the guide rod 331 and the top plate 33. Only after both sets of guide blocks 321 are squeezed into the protective frame 31 can the restriction on the guide rod 331 be completely cancelled. At this time, the top plate 33 descends. At the same time, the workpiece completely overlaps with the protective frame 31. The protective frame 31 can prevent the impactor ejected from the ejection device 34 from splashing, thereby protecting the staff and making it safer.

[0038] Furthermore, the ejection device 34 is provided with an adjusting gear 343, and the injection hole on the ejection device 34 is set at an angle. When the ejection device 34 rotates, the injection hole will be directed to different positions, thereby preventing the defect caused by only being able to spray in a fixed direction during the detection process, making the detection reliability higher. A one-way claw 3321 is provided at the bottom of the slide plate 332 for unidirectionally shifting the adjusting gear 343 when rising. The one-way claw 3321 rotates the adjusting gear 343 as the top plate 33 rises, so that after each detection is completed, the ejection device 34 can be rotated when the top plate 33 is reset, so that the detection position changes each time, and the strength of the workpiece at different positions is more fully detected during the detection process.

[0039] Among them, a limit slider 35 is provided on the side of the protective frame 31 away from the entry end of the workpiece, and an inclined guide groove 351 is provided on the limit slider 35. The height of the inclined guide groove 351 on the side close to the guide rail 1 to be mounted is higher than the other side, and the guide column 3311 extends into the inclined guide groove 351. When the guide rod 331 slides on the protective frame 31 and moves vertically downward, it will drive the guide column 3311 to squeeze the limit slider 35. At this time, under the special setting of the inclined guide groove 351, the limit slider 35 will be guided to slide toward the workpiece, thereby limiting the relative movement of the workpiece and the protective frame 31. That is, after the two sets of trigger parts 32 of the workpiece and the protective frame 31 are squeezed, they will cooperate with the limit slider 35 to drive the protective frame 31 to move. It can not only simulate the scene during the collision, but also prevent the impact object from splashing out in the gap between the misalignment of the protective frame 31 and the workpiece, thereby further improving safety.

[0040] In addition, a reset buffer 11 is provided on the upper guide rail 1, and the reset buffer 11 is elastically mounted on the upper guide rail 1, and the reset buffer 11 is lower than the protective frame 31, and an elastic band is provided between the reset buffer 11 and the protective frame 31. When the limit slider 35 and the workpiece are released from the limit, the protective frame 31 is reset by the elastic band, and at the same time, the reset buffer 11 elastically mounted on the upper guide rail 1 is used to reset the protective frame 31, thereby reducing the collision force between the protective frame 31 and the reset buffer 11. The ejection device 34 is a single-shot launching device, that is, according to Press the switch once, and the ejection device 34 will eject an impact object once. The number of times the switch is activated is the same as the number of times it is fired, so as to avoid continuous ejection of objects and hitting the staff when the workpiece and the protective frame 31 are misaligned. After the impact detection is completed, the limit slider 35 is moved in the direction away from the workpiece to cancel the restriction between the protective frame 31 and the workpiece. At this time, under the action of the reset buffer 11, the protective frame 31 is reset and prepared for the next detection. The reset of the limit slider 35 can be achieved by the cooperation of a cylinder or a motor screw, which is not limited here.

[0041] In the above technical solution, when the workpiece moves to the protective frame 31 on the upper guide rail 1 and the lower guide rail 2, the two sets of trigger members 32 are squeezed in turn. At this time, the guide block 321 and the slider 322 move and cancel the restriction on the guide rod 331. At this time, the top plate 33 drops due to gravity, and cooperates with the inclined guide groove 351 to move the limit slider 35 toward the workpiece to limit the relative movement of the protective frame 31 and the workpiece. At this time, the protective frame 31 moves with the workpiece. At the same time, the two sets of trigger members 32 are crushed and the switch is triggered, and the ejection device 34 is started to eject the impactor onto the workpiece. The groove on the workpiece is then compared with the detection standard to obtain the result. When the detection is completed, the limit slider 35 actively resets and cancels the restriction on the protective frame 31 and the workpiece. Under the action of the reset buffer 11, the protective frame 31 resets and the subsequent workpiece is detected again.

[0042] In addition, a rotating plate 36 is rotatably mounted at the bottom of the protective frame 31, and a reset member 361 is provided between the rotating shaft of the rotating plate 36 and the protective frame 31. The reset member 361 is used to reset the rotating plate 36. When the impact object falls onto the rotating plate 36 after detection, the rotating plate 36 will be squeezed to rotate. When the impact object falls, the rotating plate 36 is reset by the reset member 361. A gear 362 is coaxially mounted on the rotating shaft of the rotating plate 36, and a rack 363 meshing with the gear 362 is slidably mounted on the protective frame 31. The rack 363 is provided with two groups and is symmetrically arranged on both sides of the gear 362. The rack 363 is provided with a plurality of gears 363. 3 is located below the slide 332 and can push the slide 332. When the rotating plate 36 rotates, it will drive the gear 362 to rotate, and then lift one set of racks 363, thereby pushing the slide 332 and the top plate 33 up, and finally realizing the automatic retraction of the limit slider 35 and canceling the restriction on the protective frame 31 and the workpiece. There are two sets of rotating plates 36 and they are symmetrically distributed along the center of the protective frame 31. The two sets of rotating plates 36 rotate on the same rotating shaft. Both sides of the rotating shaft are provided with reset members 361. No matter which set of rotating plates 36 rotates, it can drive the gear 362 to rotate, thereby pushing the rack 363 to rise.

[0043] In the above technical solution, two sets of rotating turn plates 36 are provided at the bottom of the protective frame 31, and automatic resetting is achieved by cooperating with the reset members 361 on both sides of the turn plates 36. When the turn plates 36 are turned, the driving gear 362 rotates and cooperates with the rack 363 to squeeze and lift the top plate 33, thereby automatically retracting the limit slider 35, automatically canceling the restriction between the protective frame 31 and the workpiece, and realizing automatic separation of the protective frame 31 and the workpiece after detection.

[0044] It is worth noting that it also includes a deceleration component 4, which includes a deceleration column 41 rotatably arranged on the electrode plate 2 342, and a spring-shaped guide groove 411 is provided on the outer peripheral surface of the deceleration column 41. The electrode plate 1 341 is connected to the slider 322 through the reset spring 2 42, and the electrode plate 1 341 is slidably connected to the deceleration column 41. After the slider 322 is squeezed into the protective frame 31, the reset spring 2 42 is compressed, and then the electrode plate 1 341 is pushed by the reset spring 2 42 and contacts the electrode plate 2 342. A fixed column 412 extending into the spring-shaped guide groove 411 is provided on the deceleration column 41. The spring-shaped guide groove 411 on the deceleration column 41 cooperates with the fixed column 412 to reduce the contact speed between the electrode plate 1 341 and the electrode plate 2 342. That is, the electrode plate 1 341 will contact the electrode plate 2 342 only after the protective frame 31 moves synchronously with the workpiece. The gap size between the deceleration column 41 and the slider 322 is larger than the size of the slider 322 when it is fully retracted into the protective frame 31 to prevent the deceleration column 41 from limiting the retraction of the slider 322.

[0045] Working principle: Push the workpiece between the upper guide rail 1 and the lower guide rail 2. When the workpiece moves to the protective frame 31, the workpiece will squeeze the two sets of trigger members 32 in turn. When the guide blocks 321 on the two sets of trigger members 32 are squeezed back into the protective frame 31 by the workpiece, the slider 322 moves and cancels the restriction on the guide rod 331. At this time, the top plate 33 drops due to gravity, and cooperates with the inclined guide groove 351 to push the limit slider 35 toward the workpiece, thereby limiting the relative movement of the protective frame 31 and the workpiece, so that the protective frame 31 moves with the workpiece. At the same time, the two sets of trigger members 32 are pressed back and the switch is triggered, which starts the ejection device 34 to eject the impactor onto the workpiece. The grooves on the workpiece are then compared with the detection standards to obtain the results. When the inspection is completed, the impactor will drop due to gravity and fall onto any set of rotating plates 36. Since the two sets of rotating plates 36 are rotatably connected to the protective frame 31, the reset members 361 arranged on both sides of the rotating plates 36 can realize the automatic reset of the rotating plates 36 after the pressure is released. When the rotating plates 36 are toggled by the impactor, the driving gear 362 rotates and at the same time drives one set of racks 363 to rise, to squeeze and lift the top plate 33, and cooperate with the guide column 3311 and the inclined guide groove 351 to automatically retract the limit slider 35, automatically cancel the restriction between the protective frame 31 and the workpiece, and realize the automatic separation of the protective frame 31 and the workpiece after the inspection. Under the action of the reset buffer 11, the protective frame 31 is reset and the subsequent workpiece is inspected again.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A safety detection device for an explosion-proof elevator, comprising an upper guide rail (1) and a lower guide rail (2), characterized in that: Also includes: A detection assembly (3), the detection assembly (3) comprising a protective frame (31) movably mounted on the upper guide rail (1) and the lower guide rail (2), the protective frame (31) being provided with an ejection device (34) for launching an impact object toward a workpiece to be detected; and two sets of trigger members (32) elastically mounted on the bottom of the protective frame (31) and extending toward the workpiece to be detected, wherein the trigger member (32) comprises a guide block (321) movably mounted on the protective frame (31), and a slider (322) is provided at one end of the guide block (321) away from the workpiece to be detected, a return spring (323) is provided between the slider (322) and the protective frame (31) for always squeezing the guide block (321) out of the protective frame (31), and a switch for controlling the activation of the ejection device (34) is provided on the trigger member (32) away from the workpiece entry end. When the trigger member (32) away from the entry end of the workpiece is squeezed into the protective frame (31), the ejection device (34) is started to work. A rotating plate (36) is rotatably installed at the bottom of the protective frame (31), and a reset member (361) is provided between the rotating shaft of the rotating plate (36) and the protective frame (31). A gear (362) is coaxially installed on the rotating shaft of the rotating plate (36), and a rack (363) meshing with the gear (362) is slidably installed on the protective frame (31). The rack (363) is located below the slide (332) and can push the slide (332).

2. A safety detection device for explosion-proof elevators according to claim 1, characterized in that: A reset buffer (11) is provided on the upper guide rail (1), and an elastic band is provided between the reset buffer (11) and the protective frame (31).

3. A safety detection device for explosion-proof elevators according to claim 1, characterized in that: The device further comprises a top plate (33), wherein the top plate (33) is slidably connected to the protective frame (31) via a guide rod (331), a slide plate (332) is provided on the top plate (33), a guide column (3311) is provided on the guide rod (331), and a limiting groove (3221) is provided on the slider (322). When the slider (322) follows the guide block (321) to retract into the protective frame (31), the limiting groove (3221) is disengaged from the bottom of the guide rod (331) and the support for the top plate (33) is canceled.

4. A safety detection device for explosion-proof elevators according to claim 3, characterized in that: A limiting slide block (35) is provided on the side of the protective frame (31) away from the workpiece entry end, and an oblique guide groove (351) is provided on the limiting slide block (35). The side of the oblique guide groove (351) close to the guide rail (1) to be mounted is higher than the other side, and the guide column (3311) extends into the oblique guide groove (351).

5. The safety detection device for explosion-proof elevators according to claim 1, characterized in that: The rotating plates (36) are provided in two groups and are symmetrically distributed along the center of the protective frame (31), and the two groups of rotating plates (36) rotate on a common rotating shaft, and reset members (361) are provided on both sides of the rotating shaft.

6. The safety detection device for explosion-proof elevators according to claim 1, characterized in that: The switch comprises an electrode plate 2 (342) arranged on the protective frame (31) and an electrode plate 1 (341) arranged on the slider (322). When the slider (322) is compressed back, the electrode plate 1 (341) in the protective frame (31) contacts the electrode plate 2 (342) and starts the ejection device (34) to work.

7. A safety detection device for explosion-proof elevators according to claim 6, characterized in that: The invention also includes a deceleration component (4), wherein the deceleration component (4) includes a deceleration column (41) rotatably arranged on the second electrode plate (342), and the outer peripheral surface of the deceleration column (41) is provided with a spring-shaped guide groove (411), the first electrode plate (341) is connected to the slider (322) through the second return spring (42), and the first electrode plate (341) is slidably connected to the deceleration column (41), and the first electrode plate (341) is provided with a fixed column (412) extending into the spring-shaped guide groove (411).

8. The safety detection device for explosion-proof elevators according to claim 7, characterized in that: The gap between the deceleration column (41) and the slider (322) is larger than the size of the slider (322) when it is fully retracted into the protective frame (31).

9. The safety detection device for explosion-proof elevators according to claim 3, characterized in that: The ejection device (34) is provided with an adjustment gear (343), and the ejection hole on the ejection device (34) is arranged obliquely. The bottom of the slide plate (332) is provided with a one-way claw (3321) for one-way shifting of the adjustment gear (343) when ascending.

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