Safety detection device applied to anti-explosion elevator

Abstract

The invention relates to the technical field of special equipment detection, in particular to a safety detection device applied to an anti-explosion elevator, which comprises an upper guide rail and a lower guide rail, and further comprises a detection assembly, the detection assembly comprises a protection frame, and ejection equipment is arranged on the protection frame; the two triggering pieces are elastically installed at the bottom of the protection frame and extend to the workpiece to be detected, each triggering piece comprises a guide block movably installed on the protection frame, a sliding block is arranged at one end of each guide block, a first reset spring is arranged between each sliding block and the protection frame, and a switch used for controlling the ejection equipment to start is arranged on the triggering piece away from the workpiece inlet end. And when the triggering piece far away from the workpiece inlet end is squeezed into the protection frame, the ejection equipment is started to work. The limitation on the top plate is canceled by retracting the trigger piece, the top plate extrudes the limiting sliding block to limit the relative movement of the protection frame and the workpiece, and meanwhile, the ejection equipment is started to eject an impactor onto the workpiece, so that the inspection steps are optimized, the detection period is shortened, the detection efficiency is improved, and the safety is good.

Description

Technical Field

[0001] The present invention relates to the technical field of special equipment detection, and particularly 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, which is applied to industries such as oil chemical industry, delayed coking unit, and fertilizer plant. After production and before being put into use, the explosion-proof elevator must undergo strict inspection and acceptance to ensure that it meets the explosion-proof safety standards and the safety requirements of conventional elevators. The safety detection device applied to the explosion-proof elevator is a device specifically used to detect the performance of the explosion-proof elevator.

[0003] Since the car of the explosion-proof elevator is usually assembled, compared with the integrally formed car, the maintenance cost of the assembled car is lower because the maintenance personnel can more easily access and replace the damaged parts. Therefore, when detecting the elevator car, a separate elevator box surface is generally fixedly installed on the bracket, and then a heavy object impacts the elevator main body to be detected. By comparing the impact object with the elevator box surface to be detected and comparing with the standard after the impact, or analyzing the groove after the impact, it is judged whether the detected box surface meets the requirements.

[0004] In the above technical solution, when operating the impact object to impact the workpiece, during the repeated impact operation, it is necessary for technicians to repeatedly hook and release the heavy object near the heavy object with a spring buckle, and the coordinated operation of the adjustment mechanisms of each group in different parts is required. There are problems such as poor safety, increased inspection cycle, inconvenient operation, and reduced detection efficiency. Summary of the Invention

[0005] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a safety detection device applied to explosion-proof elevators. To achieve the above purposes, the present invention is realized through the following technical solutions: The present invention provides a safety detection device applied to explosion-proof elevators, including an upper guide rail and a lower guide rail, and further including: A detection component, the detection component includes a protective frame movably installed on the upper guide rail and the lower guide rail, and an ejection device for launching an impact object towards the workpiece to be detected is provided on the protective frame; And two groups of trigger members elastically installed at the bottom of the protective frame and extending towards the workpiece to be detected. The trigger member includes a guide block movably installed on the protective frame, and a slider is provided at one end of the guide block away from the workpiece to be detected. A first return spring for always extruding the guide block out of the protective frame is provided between the slider and the protective frame. A switch for controlling the start of the ejection device is provided on the trigger member away from the workpiece entry end. When the trigger member away from the workpiece entry end is squeezed into the protective frame, the ejection device is started to work.

[0006] 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.

[0007] According to some embodiments of the present invention, it also includes a top plate, which is slidably connected to the protective frame through a guide rod, and a slide plate 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.

[0008] 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.

[0009] 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, and the rack is located below the skateboard and can push the skateboard.

[0010] 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 parts are provided on both sides of the rotating shaft.

[0011] According to some embodiments of the present invention, the switch includes an electrode plate 2 arranged on the protective frame and an electrode plate 1 arranged 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 started.

[0012] 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. A fixed column extending into the spring-shaped guide groove is provided on electrode plate 1.

[0013] According to some embodiments of the present invention, the gap size between the deceleration column and the slider is larger than the size of the slider when it is fully retracted and moved in the protective frame.

[0014] According to some embodiments of the present invention, the ejection device is provided with an adjusting gear, and the ejection hole on the ejection device is inclined, and the bottom of the slide plate is provided with a one-way claw for one-way shifting of the adjusting gear when rising.

[0015] Beneficial Effects Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. By moving the workpiece on the upper guide rail and the lower guide rail and squeezing two sets of trigger parts, as the trigger parts retract, the restriction on the top plate is cancelled. The top plate drops due to gravity and squeezes the limit slider to move towards the workpiece, thereby restricting the relative movement between the protective frame and the workpiece. While the protective frame and the workpiece move together, the two sets of trigger parts are pressed back to trigger the switch, starting the ejection device to eject the impact object onto the workpiece. Subsequently, the detection result is obtained through comparison, optimizing the inspection steps, reducing the detection cycle, improving the detection efficiency, and having good safety. 2. By providing two sets of rotatable and resetable rotating plates at the bottom of the protective frame, when the rotating plates are toggled, the driving gear rotates and cooperates with the rack to squeeze and lift the top plate, thereby automatically retracting the limit slider and automatically cancelling the restriction between the protective frame and the workpiece, realizing the automatic separation between the protective frame and the workpiece after detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the detection component of the present invention; Figure 3 It is an exploded schematic diagram of the structure of the detection component of the present invention; Figure 4 It is a schematic diagram of the structures of the first guide rail and the second guide rail of the present invention; Figure 5 It is a connection schematic diagram of the rotating plate and the rack of the present invention; Figure 6 It is a schematic diagram of the structure of the deceleration component of the present invention; Figure 7 It is a connection schematic diagram of the ejection device and the top plate of the present invention.

[0018] Reference Signs: 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, first reset spring; 33, top plate; 331, guide rod; 3311, guide post; 332, sliding plate; 3321, one-way claw; 34, ejection device; 341, first electrode plate; 342, second electrode plate; 343, adjusting gear; 35, limiting slider; 351, inclined 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, second reset spring. Detailed Embodiment

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Referring to Figure 1-7 , a safety detection device applied to an explosion-proof elevator, comprising 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 detected (hereinafter referred to as the workpiece), the upper side of the workpiece extends into the upper guide rail 1, and the lower side of the workpiece extends into the lower guide rail 2. The workpiece is pushed by an external device to move between the upper guide rail 1 and the lower guide rail 2, so that the workpiece can pass through the detection device for automatic detection. To improve the smoothness of the workpiece moving between the upper guide rail 1 and the lower guide rail 2, a plurality of conveying rollers (not shown in the drawings) are installed on the sides of the upper guide rail 1 and the lower guide rail 2 in contact with the workpiece to reduce the friction when the workpiece moves. It further includes: A detection assembly 3 for detecting the strength of the workpiece. The detection assembly 3 includes a protective frame 31 movably installed on the upper guide rail 1 and the lower guide rail 2. Rollers are provided at both the top and bottom of the protective frame 31, and the rollers extend into the upper guide rail 1 and the lower guide rail 2. The two rollers provided on the protective frame 31 are respectively located above the upper guide rail 1 and below the lower guide rail 2 to keep the detection assembly 3 stable with the upper guide rail 1 and the lower guide rail 2 during the movement. An ejection device 34 for ejecting an impact object towards the workpiece to be detected is provided on the protective frame 31. The ejection device 34 actively sprays the impact object towards the workpiece, and by comparing the depression formed by the impact force of the workpiece with the specified standard, it is determined whether the workpiece is qualified; And two sets of trigger members 32 that are elastically mounted at the bottom of the protective frame 31 and extend towards the workpiece to be detected. The two sets of trigger members 32 are centrosymmetric along the center of the protective frame 31, and the trigger member 32 closer to the input end of the workpiece will be preferentially squeezed by 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 one end of the guide block 321 away from the workpiece to be detected. When the guide block 321 is compressed and retracted into the protective frame 31, the slider 322 will displace towards the side away from the workpiece. A first return spring 323 is provided between the slider 322 and the protective frame 31 for always extruding the guide block 321 out of the protective frame 31. In the initial state, that is, when the workpiece does not squeeze the guide block 321, the first return spring 323 will pull the slider 322 and push the guide block 321 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 an impact object is sprayed towards the workpiece. The ejection device 34 is provided with a feed pipe on the opposite side of the spray hole for adding the impact object into the ejection device 34 to realize the detection of subsequent workpieces.

[0022] Specifically, the switch includes an electrode plate two 342 provided on the protective frame 31 and an electrode plate one 341 provided on the slider 322. When the slider 322 is compressed and retracted, the electrode plate one 341 in the protective frame 31 contacts the electrode plate two 342 and starts the ejection device 34 to work.

[0023] Furthermore, it further includes a top plate 33. The top plate 33 is slidably connected to the protective frame 31 through a guide rod 331, and a sliding plate 332 is provided on the top plate 33. A guide post 3311 is provided on the guide rod 331, and a limit groove 3221 is provided on the slider 322. When the slider 322 retracts into the protective frame 31 following the guide block 321, the limit groove 3221 disengages from the bottom of the guide rod 331 and cancels the support for the top plate 33. After the guide block 321 closer to the workpiece entry end is squeezed and retracted into the protective frame 31, the slider 322 moves and cancels the restriction on the guide rod 331. However, at this time, since the other guide block 321 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 coincides with the protective frame 31, and the protective frame 31 can prevent the impact object ejected from the ejection device 34 from splashing out, protecting the staff and being safer.

[0024] Furthermore, the ejection device 34 is provided with an adjusting gear 343, and the injection hole on the ejection device 34 is inclined. When the ejection device 34 rotates, the injection hole will be directed to different positions, thereby preventing the defect that it can only spray in a fixed direction during the detection process, so that the detection reliability is 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 is used to rotate the adjusting gear 343 when following the rise of the top plate 33. 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 different positions of the workpiece can be more fully detected during the detection process.

[0025] 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 side of the inclined 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 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 groups of trigger members 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, which 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.

[0026] 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 through 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 to reduce the collision force between the protective frame 31 and the reset buffer 11. The ejection device 34 is a single-shot ejection device, that is, according to When the switch is pressed once, the ejection device 34 ejects 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 prevent the workpiece and the protective frame 31 from being continuously ejected and hitting the staff. After the impact detection is completed, the limit slider 35 is moved in a 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.

[0027] In the above technical scheme, when the workpiece moves to the protective frame 31 on the upper guide rail 1 and the lower guide rail 2, the two groups 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 groups of trigger members 32 are crushed and the switch is triggered, and the ejection device 34 is started to spray the impactor onto the workpiece. The groove on the workpiece is subsequently compared with the detection standard to obtain the result. When the detection is completed, the limit slider 35 is actively reset and cancels the restriction on the protective frame 31 and the workpiece. Under the action of the reset buffer 11, the protective frame 31 is reset and the subsequent workpiece is detected again.

[0028] In addition, a rotating plate 36 is rotatably mounted at the bottom of the protection frame 31, and a reset member 361 is provided between the rotating shaft of the rotating plate 36 and the protection 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. After 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 protection frame 31. The rack 363 is provided with two groups and is symmetrically disposed on both sides of the gear 362. 3 is located below the slide plate 332 and can push the slide plate 332. When the rotating plate 36 rotates, the gear 362 is driven to rotate, and then one set of racks 363 is lifted, thereby pushing the slide plate 332 and the top plate 33 up, and finally realizing the automatic retraction of the limit slider 35 and canceling the restriction on the protection frame 31 and the workpiece. The rotating plates 36 are provided with two sets and are symmetrically distributed along the center of the protection frame 31. The two sets of rotating plates 36 rotate on a common shaft. Both sides of the 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 up.

[0029] In the above technical solution, two sets of rotating plates 36 are provided at the bottom of the protective frame 31, and automatic resetting is realized by cooperating with the resetting members 361 on both sides of the rotating plates 36. When the rotating 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 the automatic separation of the protective frame 31 and the workpiece after detection.

[0030] It is worth noting that the deceleration assembly 4 is also included, and the deceleration assembly 4 includes a deceleration column 41 rotatably arranged on the electrode plate 2 342, and the outer peripheral surface of the deceleration column 41 is provided with a spring-shaped guide groove 411, 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 and contacted with the electrode plate 2 342 through the reset spring 2 42. A fixed column 412 extending into the spring-shaped guide groove 411 is provided on the deceleration column 41, and the contact speed between the electrode plate 1 341 and the electrode plate 2 342 is reduced by cooperating with the spring-shaped guide groove 411 on the deceleration column 41 and the fixed column 412, 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, thereby preventing the deceleration column 41 from limiting the retraction of the slider 322.

[0031] 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, starting the ejection device 34 to eject the impactor onto the workpiece. The grooves on the workpiece are subsequently compared with the detection standard to obtain the results. When the detection 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 cancelled. When the rotating plates 36 are turned 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 detection. Under the action of the reset buffer 11, the protective frame 31 is reset and the subsequent workpiece is detected again.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. 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 embodiments of the present invention.

Claims

1. A safety detection device applied to an explosion-proof elevator, comprising an upper guide rail (1) and a lower guide rail (2), characterized in that, Further included are: a detection component (3), the detection component (3) includes a protective frame (31) movably mounted on the upper guide rail (1) and the lower guide rail (2), and an ejection device (34) for launching an impact object towards the workpiece to be detected is provided on the protective frame (31); and two groups of trigger members (32) elastically mounted at the bottom of the protective frame (31) and extending towards the workpiece to be detected. The trigger members (32) include guide blocks (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 first return spring (323) for always extruding the guide block (321) out of the protective frame (31) is provided between the slider (322) and the protective frame (31). A switch for controlling the start of the ejection device (34) is provided on the trigger member (32) far from the workpiece inlet end. When the trigger member (32) far from the workpiece inlet end is squeezed into the protective frame (31), the ejection device (34) is started to work.

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

3. The safety detection device for an explosion-proof elevator according to claim 1, characterized in that, Further included is a top plate (33), the top plate (33) is slidably connected to the protective frame (31) through a guide rod (331), and a sliding plate (332) is provided on the top plate (33). A guide post (3311) is provided on the guide rod (331), and a limit groove (3221) is provided on the slider (322). When the slider (322) retracts into the protective frame (31) following the guide block (321), the limit groove (3221) disengages from the bottom of the guide rod (331) and cancels the lifting of the top plate (33).

4. The safety detection device for an explosion-proof elevator according to claim 3, characterized in that, A limit slider (35) is provided on one side of the protective frame (31) away from the workpiece inlet end, 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 upper guide rail (1) is higher than that on the other side, and the guide post (3311) extends into the inclined guide groove (351).

5. The safety detection device for an explosion-proof elevator according to claim 4, characterized in that, 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). 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 located below the sliding plate (332) and can push the sliding plate (332).

6. The safety detection device for an explosion-proof elevator according to claim 5, characterized in that, There are two groups of the rotating plates (36) and they are symmetrically distributed along the center of the protective frame (31), and the two groups of rotating plates (36) share a rotating shaft for rotation. Reset members (361) are provided on both sides of the rotating shaft.

7. The safety detection device for an explosion-proof elevator according to claim 1, characterized in that, The switch includes a second electrode plate (342) provided on the protective frame (31) and a first electrode plate (341) provided on the slider (322). When the slider (322) is compressed and retracted, the first electrode plate (341) in the protective frame (31) is brought into contact with the second electrode plate (342) to start the ejection device (34) to work.

8. The safety detection device applied to an explosion-proof elevator according to claim 7, characterized in that, The invention also includes a deceleration assembly (4), the deceleration assembly (4) including a deceleration column (41) rotatably arranged on the second electrode plate (342), and a spring-shaped guide groove (411) is provided on the outer peripheral surface of the deceleration column (41), the first electrode plate (341) is connected to the slider (322) via 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 fixing column (412) extending into the spring-shaped guide groove (411).

9. The safety detection device for an explosion-proof elevator according to claim 8, characterized in that, 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 and moved into the protection frame (31).

10. The safety detection device for an explosion-proof elevator 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, and 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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