Monitoring and protecting device for elevator maintenance

Abstract

The utility model relates to a monitoring protection device for elevator maintenance, which comprises a positioning plate, support plates are arranged on two sides of the upper end of the positioning plate, a sliding cavity is arranged in the positioning plate, and extension plates penetrating through the positioning plate are arranged at two ends of the sliding cavity. The utility model relates to the technical field of elevator maintenance equipment. According to the monitoring and protecting device for elevator maintenance, an extension plate is inserted into the bottom side of an elevator car, then a positioning plate is arranged at a doorsill of an elevator landing door, the two sides of the positioning plate correspond to the side walls of the elevator landing door, a two-way screw rod is rotated to fix the positioning plate, and then an ejector rod is lifted upwards through the arrangement of an adjusting connecting rod; the top end of the ejector rod makes contact with the top end frame of the elevator landing door, the elevator car is lowered to make contact with the supporting plate, the elevator car is supported through the device, and when a maintainer moves in the elevator car, good supporting performance can be provided for an elevator, so that the purpose of improving the safety of elevator maintenance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator maintenance equipment, in particular to a monitoring and protection device for elevator maintenance. Background Art

[0002] Elevators are used frequently. In order to reduce the probability of elevator accidents, staff are required to regularly perform maintenance on elevators, eliminate safety hazards, and increase the service life of elevators. General maintenance requires inspection of the elevator room, car, track, elevator doors on each floor, and pit. Among them, pit inspection is the most dangerous. Generally, inspectors can control the operation of the elevator in the car, track, and elevator door. When inspecting the pit, the elevator is at the top. The elevator may start due to other factors, causing harm to the inspectors below, posing a greater safety hazard.

[0003] Chinese patent publication number CN219839323U discloses a monitoring and protection device for elevator maintenance, including a bottom bar, a telescopic rod is slidably connected to the inner wall of one end of the bottom bar, a fixed rod is fixedly connected to the side of the telescopic rod away from the bottom bar, a fixing device is connected to the side of the bottom bar away from the telescopic rod, and the fixing device includes a station column, the station column is fixedly connected to the end of the bottom bar away from the fixed rod, a slide groove is provided on the side of the bottom bar close to the station column, an inner clamp is slidably connected in the slide groove, and an outer clamp is rotatably connected to the end of the station column away from the bottom bar. The utility model is fixed to the wall of the elevator entrance by the inner clamp and the outer clamp, and then the fixed rod is close to the inner wall, and the bottom bar and the telescopic rod are mounted in the middle of the elevator shaft to prevent the elevator from falling and causing harm to the detection personnel. The telescopic rod is provided to adapt to elevator shafts of different widths and improve the adaptability of the device.

[0004] In the above patent, the device is installed at the bottom of the pit to support the elevator car when the elevator falls, so as to prevent the elevator from hitting the maintenance personnel. However, the impact force generated when the elevator falls is large, and a loud noise will be generated when it collides with the device. At this time, the space formed by the bottom of the elevator and the elevator shaft is relatively cramped. The loud noise can easily affect the health of the maintenance personnel and may also cause great psychological damage to the maintenance personnel. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a monitoring and protection device for elevator maintenance, so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A monitoring and protection device for elevator maintenance comprises a positioning plate, support plates are arranged on both sides of the upper end of the positioning plate, a sliding cavity is arranged inside the positioning plate, extension plates passing through the positioning plate are arranged at both ends of the sliding cavity, and a bidirectional screw is commonly arranged in the middle of the two extension plates;

[0008] A fixing platform is provided at the top of the support plate and at a position corresponding to the positioning plate. Adjustment connecting rods are provided on both sides of the fixing platform. The upper ends of the adjustment connecting rods are commonly connected to the support platform. A top rod is provided at the top of the support platform.

[0009] Furthermore, the adjusting link includes a mounting plate, and support arms are rotatably connected to both sides of the mounting plate via a first shaft, and ends of the two support arms away from the mounting plate are rotatably connected to a fixed platform and a support platform respectively via a second shaft.

[0010] Furthermore, a connecting screw is rotatably arranged on the inner side of the mounting plate, one end of the connecting screw passes through the other mounting plate and extends to the top near the middle of the positioning plate, and the adjacent ends of the two connecting screws are fixedly connected to a hexagonal rotating shaft.

[0011] Furthermore, a mounting ring is sleeved on the outer wall of the hexagonal rotating shaft, a warning cross bar is provided on the outer wall of the mounting ring, and the warning cross bar is fixedly connected to the mounting ring via two locking pins.

[0012] Furthermore, a reinforcing rib is provided on the bottom side of the support plate, and positioning holes are provided on both sides of the reinforcing rib at the upper end of the support plate, and latches are provided inside the positioning holes.

[0013] Furthermore, the top end of the push rod is threadedly connected to an extension rod, and the circumferential side of the top end of the extension rod is provided with a plurality of side ribs arranged in a ring array.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] 1. The monitoring and protection device for elevator maintenance is to insert the extension plate into the bottom side of the elevator car, and then place the positioning plate at the threshold of the elevator hall door, so that the two sides of the positioning plate correspond to the side walls of the elevator hall door, and rotate the bidirectional screw to fix the positioning plate, and then lift the top rod upward by adjusting the setting of the connecting rod, so that the top of the top rod contacts the top frame of the elevator hall door. At this time, the positioning plate is fixed at the elevator hall door, and the support plate is located at the bottom end of the elevator car. When the elevator car is lowered to contact the support plate, the elevator car is supported by the device. When the elevator is maintained, the maintenance personnel can provide good support when they move in the elevator car, so as to achieve the purpose of improving the safety of elevator maintenance;

[0016] 2. This kind of monitoring and protection device for elevator maintenance can push the two mounting plates closer to each other when the connecting screw is rotated, thereby making the distance between the fixed platform and the supporting platform farther away from each other, thereby pushing the top rod installed on the top of the supporting platform upward, making the top rod contact with the top frame of the elevator hall door to achieve the purpose of fixing the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of a monitoring and protection device for elevator maintenance.

[0019] Figure 2 The utility model is a schematic diagram of the internal structure of a positioning plate of a monitoring and protection device for elevator maintenance.

[0020] Figure 3 The utility model is a structural schematic diagram of a support plate of a monitoring and protection device for elevator maintenance.

[0021] Figure 4 The utility model is a structural schematic diagram of an adjusting connecting rod of a monitoring and protecting device for elevator maintenance.

[0022] Figure 5 The utility model is a schematic structural diagram of a top rod of a monitoring and protection device for elevator maintenance.

[0023] Figure 6 The utility model is a three-dimensional structural schematic diagram of a monitoring and protection device for elevator maintenance installed at an elevator hall door.

[0024] Figure 7 The utility model is a schematic diagram of the planar structure of a monitoring and protection device for elevator maintenance installed at an elevator hall door.

[0025] In the figure, 1. positioning plate; 2. support plate; 3. sliding cavity; 4. extension plate; 5. bidirectional screw; 6. fixing platform; 7. adjusting connecting rod; 71. mounting plate; 72. first shaft rod; 73. support arm; 74. second shaft rod; 8. support platform; 9. push rod; 10. connecting screw; 11. hexagonal shaft; 12. mounting ring; 13. warning cross bar; 14. reinforcing rib; 15. positioning hole; 16. latch; 17. extension rod; 18. side rib plate. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Example:

[0028] Reference Figure 1 - Figure 7 The utility model discloses a monitoring and protection device for elevator maintenance, comprising a positioning plate 1, support plates 2 are arranged on both sides of the upper end of the positioning plate 1, a sliding cavity 3 is arranged inside the positioning plate 1, and extension plates 4 passing through the positioning plate 1 are arranged at both ends of the sliding cavity 3, and a bidirectional screw 5 is arranged in the middle of the two extension plates 4. The positions corresponding to the extension plates 4 and the bidirectional screw 5 are provided with threaded holes, and the bidirectional screw 5 includes a screw shaft, and both ends of the outer surface of the screw shaft are provided with external threads, and the pitch of the external threads on both sides is the same but in opposite directions, so that the bidirectional screw 5 can cooperate with the threaded holes to push the extension plates 4 on both sides to make synchronous movements in opposite directions when rotating;

[0029] A fixing platform 6 is provided at the top of the support plate 2 and at a position corresponding to the positioning plate 1 , and adjusting connecting rods 7 are provided on both sides of the fixing platform 6 . The upper ends of the adjusting connecting rods 7 are commonly connected to a support platform 8 , and a top rod 9 is provided at the top of the support platform 8 .

[0030] In this embodiment, when performing maintenance on the elevator, the elevator car is lifted up so that the bottom wall of the elevator car is higher than the ground. Figure 7 As shown in the figure, reference numeral A is the floor plate of the house near the elevator hall door, reference numeral B is the top frame of the elevator hall door, and reference numeral C is the elevator car. At this time, the extension plate 4 is inserted into the bottom side of the elevator car, and the positioning plate 1 is placed at the threshold of the elevator hall door, and the two sides of the positioning plate 1 correspond to the side walls of the elevator hall door, and the bidirectional screw 5 is rotated to extend the extension plates 4 on both sides outward along the sliding cavity 3 until the extension plates 4 contact the frame wall of the hall door, as shown in FIG. Figure 6 As shown, the purpose of fixing the position of the positioning plate 1 is achieved;

[0031] Then, by adjusting the setting of the connecting rod 7, the top rod 9 is lifted upward, so that the top end of the top rod 9 contacts the top frame B of the elevator hall door. At this time, the positioning plate 1 is fixed at the elevator hall door, and the support plate 2 is located at the bottom of the elevator car. Then, the elevator car is lowered to contact the support plate 2, and the elevator car is supported by the device. When the elevator is maintained, the maintenance personnel can provide good support when moving in the elevator car, so as to achieve the purpose of improving the safety of elevator maintenance;

[0032] Compared with the prior art, the present invention can directly limit the position of the elevator car to prevent the elevator car from falling during maintenance, thereby achieving the purpose of improving the safety of the maintenance personnel.

[0033] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the adjusting link 7 includes a mounting plate 71, and the two sides of the mounting plate 71 are rotatably connected to support arms 73 through a first shaft rod 72, and the ends of the two support arms 73 away from the mounting plate 71 are rotatably connected to the fixed platform 6 and the support platform 8 respectively through a second shaft rod 74.

[0034] In this embodiment, the mounting plate 71 and the first shaft 72 are used to mount two support arms 73, and the ends of the support arms 73 on both sides away from the mounting plate 71 are rotatably provided with second shafts 74, and the second shafts 74 are rotatably connected to the fixed platform 6 and the support platform 8 respectively, and two sets of adjustment connecting rods 7 are provided on the upper end of the same fixed platform 6, so that the fixed platform 6, the mounting plate 71, the support arms 73 and the support platform 8 together form a rhombus frame whose connection can rotate, such as Figure 4 shown.

[0035] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a connecting screw 10 is rotatably arranged on the inner side of the mounting plate 71, one end of the connecting screw 10 passes through the other mounting plate 71 and extends to the upper part near the middle of the positioning plate 1, and the adjacent ends of the two connecting screws 10 are fixedly connected with a hexagonal rotating shaft 11.

[0036] In this embodiment, in the two mounting plates 71 at the top of the same fixed platform 6, one of them is rotatably installed with a connecting screw 10, and the other end of the connecting screw 10 passes through the other mounting plate 71 and is threadedly matched with the mounting plate 71. When the connecting screw 10 is rotated, the two mounting plates 71 can be pushed closer to each other, thereby making the distance between the fixed platform 6 and the support platform 8 farther away from each other, thereby pushing the top rod 9 installed on the top of the support platform 8 upward, so that the top rod 9 contacts with the top frame B of the elevator hall door to achieve the purpose of fixing the device, and controlling the thread directions of the two connecting screws 10 of the diamond frames on both sides to be opposite, and fixedly connected by the hexagonal shaft 11, so that the hexagonal shaft 11 can be rotated by a wrench to achieve the purpose of pushing the top rods 9 on both sides upward at the same time, so as to achieve the purpose of fixing the equipment.

[0037] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the outer wall of the hexagonal shaft 11 is sleeved with a mounting ring 12, and the outer wall of the mounting ring 12 is provided with a warning cross bar 13, and the warning cross bar 13 is fixedly connected to the mounting ring 12 through two locking pins.

[0038] In this embodiment, the warning cross bar 13 is installed by installing the mounting ring 12 and the locking pin, and a warning flag is provided at the bottom end of the warning cross bar 13 to warn elevator passengers not to approach the elevator under maintenance.

[0039] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a reinforcing rib 14 is provided on the bottom side of the support plate 2 , and positioning holes 15 are provided on both sides of the reinforcing rib 14 at the upper end of the support plate 2 , and a latch 16 is provided inside the positioning hole 15 .

[0040] In this embodiment, the reinforcement ribs 14 are provided to improve the strength of the support plate 2, and the positioning holes 15 are used to install the latch pins 16. Figure 3 As shown, when installing the positioning plate 1, the side wall of the positioning hole 15 is aligned with the floor plate A near the elevator hall door, and when the latch 16 is inserted into the positioning hole 15, the side wall of the latch 16 is in contact with the floor plate A at the elevator hall door, as shown in FIG. Figure 7 As shown, the effect of improving the stability of the equipment is further achieved.

[0041] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the top end of the push rod 9 is threadedly connected with an extension rod 17, and the top circumferential side of the extension rod 17 is provided with a plurality of side ribs 18 arranged in a circular array.

[0042] In this embodiment, the length of the top rod 9 is increased by setting a threaded extension rod 17 so that the top rod 9 can contact with the top frame of the hall door, and the side ribs 18 are set to increase the contact area with the top frame of the hall door, thereby further improving the stability of the equipment.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A monitoring and protection device for elevator maintenance, characterized in that: It comprises a positioning plate (1), support plates (2) are arranged on both sides of the upper end of the positioning plate (1), a sliding cavity (3) is arranged inside the positioning plate (1), extension plates (4) passing through the positioning plate (1) are arranged at both ends of the sliding cavity (3), and a bidirectional screw (5) is commonly arranged in the middle of the two extension plates (4); A fixing platform (6) is provided at the top of the support plate (2) and at a position corresponding to the positioning plate (1), and adjustment connecting rods (7) are provided on both sides of the fixing platform (6). The upper ends of the adjustment connecting rods (7) are connected to a support platform (8), and a top rod (9) is provided at the top of the support platform (8).

2. The elevator maintenance monitoring and protection device according to claim 1, characterized in that: The adjusting link (7) comprises a mounting plate (71), and the two sides of the mounting plate (71) are rotatably connected to support arms (73) via a first shaft (72); the ends of the two support arms (73) away from the mounting plate (71) are rotatably connected to the fixing platform (6) and the support platform (8) respectively via a second shaft (74).

3. The elevator maintenance monitoring and protection device according to claim 2, characterized in that: A connecting screw (10) is rotatably arranged on the inner side of the mounting plate (71), one end of the connecting screw (10) passes through the other mounting plate (71) and extends to the upper part close to the middle of the positioning plate (1), and the adjacent ends of the two connecting screws (10) are fixedly connected with a hexagonal rotating shaft (11).

4. The elevator maintenance monitoring and protection device according to claim 3, characterized in that: The outer wall of the hexagonal rotating shaft (11) is sleeved with a mounting ring (12), the outer wall of the mounting ring (12) is provided with a warning cross bar (13), and the warning cross bar (13) is fixedly connected to the mounting ring (12) via two locking pins.

5. The elevator maintenance monitoring and protection device according to claim 4, characterized in that: The bottom side of the support plate (2) is provided with a reinforcing rib (14), and the upper end of the support plate (2) is provided with positioning holes (15) on both sides of the reinforcing rib (14), and the interior of the positioning hole (15) is provided with a latch (16).

6. The elevator maintenance monitoring and protection device according to claim 5, characterized in that: The top end of the push rod (9) is threadedly connected to an extension rod (17), and a plurality of side ribs (18) arranged in a ring array are arranged on the circumferential side of the top end of the extension rod (17).

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