Locking device and elevator shaft maintenance support platform

Abstract

The utility model discloses a locking device and elevator shaft overhauls support platform, locking device is configured in the connection support plate and bearing beam, and support plate can rotate relative to bearing beam, including first connecting body, second connecting body and elastic joint piece, first connecting body is configured as being connected in bearing beam, and second connecting body is configured as being connected in support plate, and the relative first connecting body is provided with the clamping slot, and elastic joint piece includes the joint block and the elastic part, and the joint block is located relative to the clamping slot and is movably connected in the first connecting body, and the elastic part is connected in the joint block and the first connecting body, is used for promoting the joint block to slide close to the clamping slot, and after the joint block slides into the clamping slot, has the first state of being engaged with the clamping slot or the second state of being disengaged with the clamping slot. The utility model can effectively solve the problem that the abnormal recovery folding state of support platform will be caused by the structural failure of first support component or second support component, resulting in the problem of hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance technology, specifically to a locking device and an elevator shaft maintenance support platform. Background Technology

[0002] When a car elevator has been in operation for a period of time or malfunctions, it needs to be inspected. To facilitate this, a maintenance safety platform is usually used to prevent the elevator from moving unexpectedly (i.e., "runaway"), which can create a safe working space for construction workers without the risk of falling.

[0003] For example, Chinese invention patent CN112141859B, entitled "A Foldable Car Top Maintenance Platform and Its Usage Method," is characterized by supporting plates installed on two load-bearing beams, with the opening and folding of the supporting plates achieved through the supporting structure. This invention achieves the opening and closing of the supporting plates by pre-installing multiple sets of supporting structures on the load-bearing beams. When not in use, the supporting plates can be retracted without affecting elevator operation. When maintenance is required, the supporting plates can be unfolded, providing more standing space for maintenance personnel, facilitating maintenance operations and solving the safety hazards caused by insufficient standing space during maintenance.

[0004] However, after the support plates on both sides support the rotation and unfolding of the load-bearing beam, they are fixed only by the first or second support member between the support plate and the load-bearing beam. If the first or second support member fails, the support platform will abnormally return to the folded state, resulting in a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a locking device and an elevator shaft maintenance support platform to solve the technical problem in the prior art that the support platform will abnormally return to a folded state due to structural failure of the first support component or the second support component, which leads to safety hazards.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a locking device disposed on a connecting support plate and a load-bearing beam, wherein the support plate is rotatable relative to the load-bearing beam, comprising: The first connector is configured to be connected to the load-bearing beam; The second connector is configured to connect to the support plate and has a slot relative to the first connector; and The elastic snap-fit ​​component includes a snap-fit ​​block and an elastic part. The snap-fit ​​block is disposed opposite to the slot and is movably connected to the first connecting body. The elastic part is connected to the snap-fit ​​block and the first connecting body and is used to push the snap-fit ​​block closer to the slot and slide. After the snap-fit ​​block slides into the slot, it has a first state of engaging with the slot or a second state of disengaging from the slot.

[0007] In some embodiments, the latching block is a magnetically conductive structure, and the locking device further includes an electromagnet, which is placed inside the latching slot and connected to the second connector. The electromagnet is capable of generating a magnetic attraction force to magnetically attract the latching block or releasing the magnetic attraction force.

[0008] In some embodiments, the first connector has a receiving groove relative to the slot, the elastic part is built into the receiving groove, and one end of the elastic part is connected to the bottom inner wall of the receiving groove and the other end is connected to the snap-fit ​​block.

[0009] In some embodiments, the bottom inner wall of the receiving groove is further provided with at least one guide hole, and the elastic snap-fit ​​member further includes at least one guide rod, one end of which is connected to the snap-fit ​​block and the other end is slidably inserted into the guide hole.

[0010] In some embodiments, the top of the card slot is provided with an abutment surface, the abutment surface causing the opening direction of the card slot to gradually increase along the direction close to the first connector, and the abutment surface can movably abut against the card block to push the card block back into the receiving groove.

[0011] In some embodiments, the snap-fit ​​block has an arc-shaped abutment end relative to the abutment surface, and the arc-shaped abutment end is capable of sliding along the surface of the abutment surface.

[0012] In some embodiments, the snap-fit ​​block has a groove relative to the abutment surface, and the arc-shaped abutment end is rotatably embedded in the groove and can abut against the abutment surface.

[0013] In some embodiments, both the first connector and the second connector are non-magnetic structures.

[0014] Secondly, this utility model also provides an elevator shaft maintenance support platform, characterized in that it includes: a load-bearing beam, at least one support plate, at least one linear drive component, and at least one locking device as described above. The support plate is disposed on one side of the load-bearing beam. The fixed end of the linear drive component is hinged to the load-bearing beam, and the movable end is hinged to the support plate, for driving the support plate to rotate relative to the load-bearing beam. The first connecting body is connected to the load-bearing beam, and the second connecting body is disposed opposite to the first connecting body and connected to the support plate. The locking block is slidably connected to the first connecting body and can lock with the second connecting body.

[0015] In some embodiments, there are two support plates, which are rotatably connected to both sides of the load-bearing beam. Two locking devices correspond to one support plate, and two second connecting bodies are spaced apart from each other and are both connected to the support plates.

[0016] Compared with the prior art, the advantages of the locking device and elevator shaft maintenance support platform provided by this utility model include: the first connecting body is connected to the load-bearing beam, the second connecting body is connected to the support plate, and a slot is provided relative to the first connecting body; the locking block can slide close to the slot under the drive of the elastic part and slide into the slot; after sliding into the slot, the locking block has a first state of engaging with the slot or a second state of disengaging from the slot. Compared to existing technologies, after the support plate unfolds relative to the load-bearing beam, the elastic part can push the locking block into the locking slot. When the locking block is in the first state after sliding into the locking slot, it cannot be separated from the locking slot, that is, the first connecting body and the second connecting body form a whole, and the support plate cannot rotate relative to the load-bearing beam, which can prevent accidental restoration to the folded state. At the same time, when the locking block is in the second state after sliding into the locking slot, the first connecting body and the second connecting body do not form a whole, and the support plate can rotate relative to the load-bearing beam. After rotation, the support plate can push the locking block out of the locking slot, completing the normal restoration of the support platform to the folded state. This can improve the stability and safety of the support platform and solve the technical problem in the existing technology where structural failure of the first or second support component can cause the support platform to abnormally restore to the folded state, resulting in safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a locking device connected to a support plate and a load-bearing beam according to an embodiment of the present invention; Figure 2 This is a schematic diagram from another perspective of a locking device connected to a support plate and a load-bearing beam according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of a locking device connected to a support plate and a load-bearing beam according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a locking device and an elevator shaft maintenance support platform provided in an embodiment of the present invention.

[0018] Support plate 100; load-bearing beam 200; first connecting body 300; second connecting body 400; elastic snap-fit ​​component 500; snap-fit ​​block 510; elastic part 520; guide rod 530; electromagnet 600; abutment surface 700; arc-shaped abutment end 800; linear drive component 900; Explanation of reference numerals in the attached figures: Detailed Implementation To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To address the technical problem of safety hazards caused by structural failures in the first or second supporting component leading to an abnormal return of the support platform to a folded state, this invention provides a locking device and an elevator shaft maintenance support platform. After the support plate 100 unfolds relative to the load-bearing beam 200, the elastic part 520 pushes the locking block 510 into the slot. In the first state after sliding into the slot, the locking block 510 cannot separate from the slot, meaning the first connecting body 300 and the second connecting body 400 form a whole, and the support plate 100 cannot rotate relative to the load-bearing beam 200, thus preventing accidental return to a folded state. Simultaneously, in the second state after sliding into the slot, the first connecting body 300 and the second connecting body 400 are not a whole, and the support plate 100 can rotate relative to the load-bearing beam 200. The rotated support plate 100 can push the locking block 510 out of the slot, completing the normal return of the support platform to a folded state, thus improving the stability and safety of the support platform.

[0020] Please see Figures 1 to 3This is a schematic diagram of a locking device and an elevator shaft maintenance support platform according to an embodiment of the present invention. The locking device is configured on a connecting support plate 100 and a load-bearing beam 200. The support plate 100 is rotatable relative to the load-bearing beam 200 and includes: a first connecting body 300, a second connecting body 400, and an elastic snap-fit ​​member 500. The first connecting body 300 is connected to the load-bearing beam 200, and the second connecting body 400 is connected to the support plate 100 and has a slot relative to the first connecting body 300. The elastic snap-fit ​​member 500 includes a snap-fit ​​block 510 and an elastic part 520. The snap-fit ​​block 510 is disposed relative to the slot and is movably connected to the first connecting body 300. The elastic part 520 is connected to the snap-fit ​​block 510 and the first connecting body 300 and is used to push the snap-fit ​​block 510 closer to the slot and slide it. After the snap-fit ​​block 510 slides into the slot, it has a first state of engaging with the slot or a second state of disengaging from the slot.

[0021] In this device, after the support plate 100 unfolds relative to the load-bearing beam 200, the elastic part 520 can push the locking block 510 into the slot. When the locking block 510 is in the first state after sliding into the slot, it cannot be separated from the slot, that is, the first connecting body 300 and the second connecting body 400 form a whole, and the support plate 100 cannot rotate relative to the load-bearing beam 200, thus avoiding accidental restoration to the folded state. At the same time, when the locking block 510 is in the second state after sliding into the slot, the first connecting body 300 and the second connecting body 400 do not form a whole, and the support plate 100 can rotate relative to the load-bearing beam 200. After rotation, the support plate 100 can push the locking block 510 out of the slot, completing the normal restoration of the support platform to the folded state. This can improve the stability and safety of the support platform and solve the technical problem in the prior art where structural failure of the first or second support component can cause the support platform to abnormally restore to the folded state, resulting in safety hazards.

[0022] Furthermore, in this device, to avoid the time-consuming process of laying and fixing the platform panels one by one, which can be very time-consuming for short-term, small-scale maintenance tasks, the installation time of the platform may far exceed the actual working time, reducing work efficiency. Therefore, the use of a foldable support platform can effectively improve work efficiency. Here, please refer to the Chinese invention patent with publication number CN112141859B, entitled: A foldable car roof maintenance platform and its usage method. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0023] In some embodiments, the elastic part 520 is a spring, elastic block or elastic sheet that is commonly available and readily procurable in the market. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0024] In some embodiments, the elastic part 520 is a linear drive structure. The fixed end of the linear drive structure is connected to the first connector 300, and the telescopic end is disposed relative to the snap-fit ​​block 510. The telescopic end of the linear drive structure extends relative to its fixed end, which can push the snap-fit ​​block 510 into the slot and make the snap-fit ​​block 510 snap into the slot. This will not be described in detail here.

[0025] In this embodiment, as Figure 3 As shown, the latching block 510 has a magnetic structure, and the locking device also includes an electromagnet 600. The electromagnet 600 is built into the slot and connected to the second connector 400. The electromagnet 600 can generate a magnetic attraction force to the latching block 510 or release the magnetic attraction force.

[0026] The magnetic attraction force generated by the electromagnet 600 after it is energized can attract and fix the magnetic structure (clamping block 510) in the slot, thus forming the first state of engagement.

[0027] Furthermore, when the electromagnet 600 is de-energized, the magnetic attraction force disappears, the latching block 510 is in the second state, and the latching block 510 can slide out along the opening of the slot under the action of external force.

[0028] In some embodiments, the device also includes wires, switches, and power supplies. The wires, switches, and power supplies are electrically connected to the electromagnet 600. After the support plate 100 is unfolded relative to the load-bearing beam 200, the user can manually trigger the switch or use an automatic contact switch to make the electromagnet 600 magnetic or demagnetize. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0029] In some embodiments, the snap-fit ​​block 510 is made of common and readily available magnetic materials such as iron, cobalt, and nickel. This is a conventional setting known to those skilled in the art and will not be described further here.

[0030] In this embodiment, as Figure 3 As shown, the first connector 300 has a receiving groove relative to the slot, the elastic part 520 is built into the receiving groove, and one end of the elastic part 520 is connected to the bottom inner wall of the receiving groove and the other end is connected to the snap block 510.

[0031] A receiving groove is provided relative to the card slot to accommodate the elastic part 520 and to provide clearance space for the sliding of the card block 510.

[0032] Furthermore, the overall aesthetics of the device can be improved by setting up a receiving cavity.

[0033] In one embodiment, such as Figure 3As shown, the bottom inner wall of the receiving groove is also provided with at least one guide hole, and the elastic snap-fit ​​component 500 also includes at least one guide rod 530, one end of which is connected to the snap-fit ​​block 510 and the other end is slidably inserted into the guide hole.

[0034] By setting a guide structure that cooperates with the guide hole and the guide rod 530, the locking block 510 can play a connecting and guiding role in sliding relative to the receiving groove.

[0035] Furthermore, the number of guide rods 530 here can be set according to specific needs, which will not be elaborated here.

[0036] In one embodiment, such as Figure 3 As shown, the top of the card slot has an abutment surface 700. The abutment surface 700 causes the opening direction of the card slot to gradually increase along the direction close to the first connector 300, and the abutment surface 700 can move to abut against the card block 510 to push the card block 510 back into the receiving groove.

[0037] By setting the abutment surface 700, when the support plate 100 is retracted relative to the load-bearing beam 200, the abutment surface 700 and the locking block 510 cooperate to better push the locking block 510 in the second state to separate from the slot, which can facilitate the folding of the support platform.

[0038] In one embodiment, such as Figure 3 As shown, the snap-fit ​​block 510 has an arc-shaped abutment end 800 formed relative to the abutment surface 700, and the arc-shaped abutment end 800 can slide along the surface of the abutment surface 700.

[0039] By setting the arc-shaped abutment end 800, the friction between the abutment surface 700 and the snap-fit ​​block 510 can be reduced, and the snap-fit ​​block 510 can slide into the receiving groove more smoothly.

[0040] In one embodiment, such as Figure 3 As shown, the snap-fit ​​block 510 has a groove on the abutment surface 700, and the arc-shaped abutment end 800 is rotatably embedded in the groove and can abut against the abutment surface 700.

[0041] By setting an arc-shaped abutment end 800 that is rotatably embedded in the groove, the sliding friction can be effectively reduced, making the folding or retraction of the support platform smoother.

[0042] Furthermore, the arc-shaped contact end 800 here is a ball bearing or steel ball that is common and readily available on the market. The ball bearing or steel ball rotates within the groove, which will not be described in detail here.

[0043] In some embodiments, the snap-fit ​​block 510 is provided with an arc-shaped abutment end relative to the abutment surface 700, and the sliding friction is reduced by the contact between the arc surface and the abutment surface 700.

[0044] In one embodiment, both the first connector 300 and the second connector 400 are non-magnetic structures.

[0045] By setting the first connector 300 and the second connector 400 as non-magnetic structures, interference with the sliding of the snap block 510 relative to the first connector 300 and the second connector 400 can be reduced, thereby improving the stability and safety of the device during operation.

[0046] Furthermore, the first connector 300 and the second connector 400 can be made of aluminum alloy or stainless steel, which are commonly available and readily procurable on the market, and will not be elaborated further here.

[0047] like Figure 4 As shown, this application also provides an elevator shaft maintenance support platform, including: a load-bearing beam 200, at least one support plate 100, at least one linear drive member 900 and at least one locking device. The support plate 100 is disposed on one side of the load-bearing beam 200. The fixed end of the linear drive member 900 is hinged to the load-bearing beam 200 and the movable end is hinged to the support plate 100, for driving the support plate 100 to rotate relative to the load-bearing beam 200. A first connecting body 300 is connected to the load-bearing beam 200. A second connecting body 400 is disposed relative to the first connecting body 300 and connected to the support plate 100. A snap-fit ​​block 510 is slidably connected to the first connecting body 300 and can snap-fit ​​with the second connecting body 400.

[0048] The first connector 300, the second connector 400, the elastic snap-fit ​​component 500, and the electromagnet 600 can form a secondary support for the support plate 100, thereby improving the safety of the support platform.

[0049] Furthermore, the load-bearing beam 200 and the support plate 100 are rotatably connected by multiple hinges or articulated joints. Under the drive of the linear drive component 900, they can be unfolded or folded. This can be referred to in Chinese invention patent with publication number CN112141859B, entitled "A Foldable Car Top Inspection Platform and Its Usage Method". This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0050] In one embodiment, such as Figure 4 As shown, there are two support plates 100, which are rotatably connected to both sides of the load-bearing beam 200. Two locking devices correspond to one support plate 100. Two second connecting bodies 400 are spaced apart from each other and are both connected to the support plates 100.

[0051] By setting support plates 100 on both sides of the load-bearing beam 200, the overall volume of the support platform can be effectively reduced, making the support platform small in size and lightweight, which is convenient for carrying and safe maintenance in case of emergencies. This will not be elaborated further here.

[0052] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below: The first connecting body 300 is connected to the load-bearing beam 200, and the second connecting body 400 is connected to the support plate 100. A slot is provided relative to the first connecting body 300. The locking block 510 can slide close to the slot under the action of the elastic part 520 and slide into the slot. After sliding into the slot, the locking block 510 has a first state of engaging with the slot or a second state of disengaging from the slot. Compared to existing technologies, after the support plate 100 unfolds relative to the load-bearing beam 200, the elastic part 520 can push the locking block 510 into the slot. When the locking block 510 is in the first state after sliding into the slot, it cannot be separated from the slot, that is, the first connecting body 300 and the second connecting body 400 form a whole, and the support plate 100 cannot rotate relative to the load-bearing beam 200, which can prevent accidental restoration to the folded state. At the same time, when the locking block 510 is in the second state after sliding into the slot, the first connecting body 300 and the second connecting body 400 do not form a whole, and the support plate 100 can rotate relative to the load-bearing beam 200. After rotation, the support plate 100 can push the locking block 510 out of the slot, completing the normal restoration of the support platform to the folded state.

[0053] In the specific working process of this utility model, if the user needs to unfold the support platform, the linear drive component 900 is first used to drive the support plate 100 to rotate relative to the load-bearing beam 200. When the locking block 510 is opposite to the slot, under the elastic force of the elastic part 520, the locking block 510 slides into the slot. At this time, the electromagnet 600 is energized and becomes magnetic, and the locking block 510 is magnetically attracted to the electromagnet 600. Here, the support plate 100 cannot rotate relative to the load-bearing beam 200, which can prevent accidental restoration to the folded state.

[0054] Furthermore, if the user needs to fold the support platform, firstly, the electromagnet 600 is de-energized. When the latching block 510, after sliding into the slot, is in the second state, the first connector 300 and the second connector 400 are not integrated, and the support plate 100 can rotate relative to the load-bearing beam 200. After rotation, the support plate 100 can push the latching block 510 out of the slot, completing the normal restoration of the folded state of the support platform. Finally, the linear drive component 900 is used to drive the support plate 100 to rotate relative to the load-bearing beam 200, completing the retraction and folding. The operation is convenient and highly safe.

[0055] This application, through the aforementioned structure, can improve the stability and safety of the support platform, and can solve the technical problem in the prior art where structural failure of the first or second support component causes the support platform to abnormally return to a folded state, resulting in safety hazards.

[0056] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A locking device disposed on a connecting support plate and a load-bearing beam, the support plate being rotatable relative to the load-bearing beam, characterized in that, include: The first connector is configured to be connected to the load-bearing beam; The second connector is configured to connect to the support plate and has a slot relative to the first connector; and The elastic snap-fit ​​component includes a snap-fit ​​block and an elastic part. The snap-fit ​​block is disposed opposite to the slot and is movably connected to the first connecting body. The elastic part is connected to the snap-fit ​​block and the first connecting body and is used to push the snap-fit ​​block closer to the slot and slide. After the snap-fit ​​block slides into the slot, it has a first state of engaging with the slot or a second state of disengaging from the slot.

2. The locking device according to claim 1, characterized in that, The latching block has a magnetically conductive structure, and the locking device further includes an electromagnet. The electromagnet is placed inside the latching slot and connected to the second connector. The electromagnet can generate a magnetic attraction force to attract the latching block or release the magnetic attraction force.

3. The locking device according to claim 1, characterized in that, The first connector has a receiving groove relative to the slot, the elastic part is built into the receiving groove, and one end of the elastic part is connected to the bottom inner wall of the receiving groove and the other end is connected to the snap-fit ​​block.

4. The locking device according to claim 3, characterized in that, The bottom inner wall of the receiving groove is also provided with at least one guide hole, and the elastic snap-fit ​​component also includes at least one guide rod, one end of which is connected to the snap-fit ​​block and the other end is slidably inserted into the guide hole.

5. The locking device according to claim 3, characterized in that, The top of the card slot has an abutment surface, which causes the opening of the card slot to gradually increase in the direction close to the first connector, and the abutment surface can move to abut against the card block to push the card block back into the receiving groove.

6. The locking device according to claim 5, characterized in that, The snap-fit ​​block has an arc-shaped abutment end relative to the abutment surface, and the arc-shaped abutment end can slide along the surface of the abutment surface.

7. The locking device according to claim 6, characterized in that, The snap-fit ​​block has a groove relative to the abutment surface, and the arc-shaped abutment end is rotatably embedded in the groove and can abut against the abutment surface.

8. The locking device according to claim 2, characterized in that, Both the first connector and the second connector are non-magnetic structures.

9. A support platform for elevator shaft maintenance, characterized in that, include: The device comprises a load-bearing beam, at least one support plate, at least one linear drive member, and at least one locking device as described in any one of claims 1-8. The support plate is disposed on one side of the load-bearing beam. The fixed end of the linear drive member is hinged to the load-bearing beam, and the movable end is hinged to the support plate. The drive member is used to drive the support plate to rotate relative to the load-bearing beam. The first connecting body is connected to the load-bearing beam. The second connecting body is disposed opposite to the first connecting body and connected to the support plate. The locking block is slidably connected to the first connecting body and can lock into the second connecting body.

10. The elevator shaft maintenance support platform according to claim 9, characterized in that, There are two support plates, which are rotatably connected to both sides of the load-bearing beam. Two locking devices are provided for each support plate. Two second connecting bodies are spaced apart from each other and are both connected to the support plates.

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