Safety device for elevator maintenance

Abstract

The utility model discloses a safety device for elevator maintenance, which comprises a shell, an elevator shaft and an elevator car, a driving component is arranged on the shell and is driven to move along a first slide way by abutting against a moving rod, the moving rod is connected with a supporting component, and when the moving rod moves, the supporting component extends along with the moving rod to provide support for the bottom surface of the elevator shaft. A transmission assembly in the shell is in transmission connection with a driving assembly, a lifting component arranged on the transmission assembly penetrates through the shell and is in sliding connection with the shell, the driving assembly can drive the transmission assembly to drive the lifting component to ascend or descend, a jacking assembly is further arranged on the upper surface of the shell, and when the lifting component ascends, the jacking assembly can be driven to be lifted upwards. The bottom of the elevator car is stably supported, the safety of the elevator in the maintenance process is ensured through the synergistic effect of all the assemblies, and reliable protection is provided for maintenance personnel.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator maintenance field, concretely relates to a safety device of elevator maintenance. BACKGROUND

[0002] The elevator is the object that modern city people need to contact every day in daily life, along with the application of elevator more and more widely, the maintenance and repair of elevator more and more become a common service behavior, in the daily elevator maintenance process, operating personnel often need to enter the pit of elevator shaft from bottom to top to the bottom of elevator car maintenance, most of the pit of elevator shaft still has a distance from the ground, operating personnel when entering the pit is prone to danger.

[0003] In prior art, elevator maintenance safety device is usually complex frame support structure, the support frame volume is larger, in the maintenance of elevator, the support frame whole is not convenient to move into the pit of elevator shaft, and it is inconvenient to use, and it occupies larger use space and is complex to operate, in addition, the support frame needs additional operation when supporting the bottom of elevator car in the process of use, which increases the operation difficulty of operating personnel. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiency in the above-mentioned technology, and provides a safety device for elevator maintenance, to solve the above-mentioned technical problem.

[0005] The utility model provides a safety device for elevator maintenance, including the casing, elevator shaft and elevator car installed in the elevator shaft, still includes:

[0006] Driving assembly, driving assembly is set up on the casing, and the first slide is seted up on the both sides of casing, and the moving rod is slidably installed in the first slide, and driving assembly is connected with moving rod and drives moving rod to move along the first slide;

[0007] Support assembly, support assembly is set up on the casing, and support assembly is connected with moving rod, and moving rod drives support assembly to move to drive support assembly to stretch to support the bottom surface of elevator shaft;

[0008] Transmission assembly, transmission assembly is set up in the casing and is transmission connection with driving assembly, and the lifting member is still seted up on transmission assembly, and the lifting member is slidably connected in the casing, and driving assembly is used to drive transmission assembly to drive the lifting member to ascend or descend;

[0009] Jacking assembly, jacking assembly is set up on the upper surface of casing, and the lifting member drives jacking assembly to lift upward to form the support part of triangle for supporting the bottom of elevator car.

[0010] Preferably, the driving assembly comprises a screw rod penetrating through the two opposite side walls of the shell and being rotationally connected to the shell, the screw rod penetrates through the moving rod, two moving blocks are threadedly connected to the screw rod, and the two moving blocks are located on the two sides of the moving rod and abut against each other.

[0011] Preferably, a guide rod is fixedly installed in the shell and located above the screw rod, two guide blocks are slidingly installed on the guide rod, and the two guide blocks are fixedly connected to the two moving blocks, respectively.

[0012] Preferably, the supporting assembly comprises two supporting arms and two connecting arms, one end of the supporting arm is hingedly installed to one end of the connecting arm, the other end of the supporting arm is hingedly installed to the side wall of the shell, and the other end of the connecting arm is hingedly installed to the end of the moving rod.

[0013] Preferably, the transmission assembly comprises four belt pulleys, two of which are fixedly installed on the outer side of the screw rod, two mounting racks are fixedly installed on the inside of the shell and located on the two sides of the screw rod, a rotating shaft is rotationally installed on the mounting rack, the other two belt pulleys are fixedly connected to the two rotating shafts, the belt pulleys on the screw rod and the belt pulleys on the mounting rack are drivingly connected through a belt, and a gear is fixedly installed on the outer side of the rotating shaft.

[0014] Preferably, the jacking assembly comprises four jacking rods, the jacking rods are hingedly installed on the two sides of the upper surface of the shell in pairs, one of the jacking rods of one pair is provided with a second sliding groove on one surface, the other jacking rod is fixedly installed with a sliding column, a sliding groove is formed on the two sides of the inner wall of the shell, a rack is slidingly installed in the sliding groove, the rack penetrates through the upper surface of the shell, the rack and the gear are in meshing engagement, and the gear drives the rack to displace in the vertical direction to jack up the jacking rod.

[0015] Preferably, a jacking block is fixedly installed at the top end of the rack and located below the jacking rod, and the jacking block abuts against the jacking rod.

[0016] Preferably, an abutting block is hingedly installed at one end of the jacking rod, and the abutting block abuts against the bottom of the elevator car to support the elevator car.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The utility model provides a kind of safety device of elevator maintenance, by the shell of safety device is inserted along ground level into elevator shaft, then by driving assembly drives support assembly to stretch to make support assembly and the bottom surface of elevator shaft pit are supported, so that the upper surface of safety device shell becomes a maintenance platform for maintenance personnel to stand, without the support frame body of bulk is inserted into elevator shaft, the difficulty of manpower operation is saved, and the efficiency of maintenance work is improved, simultaneously driving assembly is synchronous with transmission assembly movement when moving, transmission assembly drives the lifting member connected therewith to rise, lifting member drives the support assembly to gradually lift to form the support to elevator car bottom, prevent the falling of upper elevator car in the process of elevator maintenance to hurt event, create a more safe maintenance space for elevator maintenance personnel.

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be simply introduced below, and obviously, the drawings in the following description are only preferred embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the schematic diagram of the safety device of elevator maintenance of the utility model;

[0021] Figure 2 It is the internal structure schematic diagram of the shell of the safety device of elevator maintenance of the utility model;

[0022] Figure 3 It is the schematic diagram of driving assembly and transmission assembly of the safety device of elevator maintenance of the utility model;

[0023] Figure 4 It is the schematic diagram of the support assembly of the safety device of elevator maintenance of the utility model;

[0024] Figure 5 It is the schematic diagram of elevator shaft and elevator car of the safety device of elevator maintenance of the utility model.

[0025] In the drawing, 1, shell;2, first slide;3, moving rod;4, screw;5, moving block;6, guide rod;7, guide block;8, support arm;9, connecting arm;10, pulley;11, mounting bracket;12, rotating shaft;13, gear;14, jacking rod;15, second slide;16, slide column;17, sliding slot;18, rack;19, jacking block;20, abutment block. DETAILED DESCRIPTION

[0026] The detailed embodiments of the utility model will be described in detail in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the application, but it cannot be understood as a limitation on the protection scope of the application.

[0027] Embodiment 1:

[0028] As Figures 1 to 5 shown, the utility model provides a kind of safety device of elevator maintenance, including shell 1, elevator shaft and elevator car installed in elevator shaft, still include:

[0029] Drive assembly, drive assembly is set on shell 1, first slide 2 is opened in the both sides of shell 1, moving rod 3 is slidably installed in first slide 2, drive assembly is mutually connected with moving rod 3 and drives moving rod 3 to move along first slide 2;

[0030] Supporting assembly, supporting assembly is set on shell 1, supporting assembly is connected with moving rod 3, moving rod 3 drives supporting assembly to move to drive supporting assembly to extend to support the bottom surface of elevator shaft;

[0031] Transmission assembly, transmission assembly is set in shell 1 and is transmission connection with drive assembly, transmission assembly is also provided with lifting member, lifting member is penetrated in shell 1 and is slidably connected in shell 1, drive assembly is used to drive transmission assembly to drive lifting member to ascend or descend;

[0032] Jacking assembly, jacking assembly is set on the upper surface of shell 1, lifting member drives jacking assembly to lift upward to form the support part of triangle for supporting the bottom of elevator car.

[0033] When using, the shell 1 of safety device is inserted into elevator shaft along ground level, then drive assembly is started, and the bottom surface of the bottom pit of elevator shaft is contacted by using drive assembly to drive supporting assembly to open to form the support of one side of shell 1, the other side of shell 1 is directly contacted with ground, and ground gives support force to shell 1, so that shell 1 of safety device forms a platform for maintenance personnel to stand, drive assembly will drive transmission assembly to move simultaneously, and lifting member connected with transmission assembly gradually rises, and jacking assembly is lifted by lifting member when rising, and finally the support of the bottom of elevator car is completed, safe maintenance space is provided, and the safety of maintenance personnel is ensured.

[0034] Embodiment 2:

[0035] As Figures 1 to 5As shown, in combination with the technical solutions of embodiment 1, in the technical solutions, the driving assembly comprises a screw rod 4, the screw rod 4 penetrates through the two opposite side walls of the shell 1 and is rotationally connected to the shell 1, the screw rod 4 penetrates through the moving rod 3, two moving blocks 5 are threadedly connected to the screw rod 4, and the two moving blocks 5 are located on the two sides of the moving rod 3 and abut against the moving rod 3. Rotating the screw rod 4 drives the two moving blocks 5 on the screw rod 4 to simultaneously displace in the horizontal direction, and the two moving blocks 5 abut against the two sides of the moving rod 3, so that when the screw rod 4 is rotated counterclockwise or clockwise, the moving rod 3 is driven to move back and forth along the first slide 2.

[0036] Further, a guide rod 6 is fixedly installed in the shell 1, the guide rod 6 is located above the screw rod 4, two guide blocks 7 are slidingly installed on the guide rod 6, and the two guide blocks 7 are fixedly connected to the two moving blocks 5. In order to prevent the guide blocks 7 on the screw rod 4 from synchronously rotating with the screw rod 4, the guide rod 6 is arranged above the screw rod 4, and the guide blocks 7 are fixedly installed on the two moving blocks 5. The guide blocks 7 can only move in the length direction of the guide rod 6, so that the self-rotation of the guide blocks 7 on the screw rod 4 is prevented.

[0037] Further, the supporting assembly comprises two supporting arms 8 and two connecting arms 9, one end of the supporting arm 8 is hingedly installed with one end of the connecting arm 9, the other end of the supporting arm 8 is hingedly installed with the side wall of the shell 1, and the other end of the connecting arm 9 is hingedly installed with the end of the moving rod 3. The connecting arm 9 drives the supporting arm 8 to move when the connecting arm 9 moves, and the other end of the supporting arm 8 is hingedly installed with the shell 1, which facilitates the movement of the supporting arm 8. The hinged installation facilitates the stretching of the supporting arm 8 and prevents the supporting arm 8 from being stuck.

[0038] Further, the transmission assembly comprises four belt pulleys 10, two of which are fixedly installed on the outer side of the screw rod 4, mounting racks 11 are fixedly installed on the inside of the shell 1 on both sides, the mounting racks 11 are located on the two sides of the screw rod 4, rotating shafts 12 are rotationally installed on the mounting racks 11, the other two belt pulleys 10 are fixedly connected to the two rotating shafts 12, the belt pulleys 10 on the screw rod 4 are drivingly connected to the belt pulleys 10 on the mounting racks 11 through belts, and gears 13 are fixedly installed on the outer side of the rotating shafts 12. When the belt pulleys 10 on the screw rod 4 rotate, the belt pulleys 10 on the rotating shafts 12 are driven to rotate through belt transmission, the rotating shafts 12 are driven to rotate when the belt pulleys 10 on the rotating shafts 12 rotate, and the gears 13 fixedly installed on the outer side of the rotating shafts 12 are driven to rotate when the rotating shafts 12 rotate.

[0039] Further, the top support assembly comprises four top support rods 14, which are installed in pairs on the two sides of the upper surface of the shell 1 and are hingedly connected, one of the top support rods 14 of each pair is provided with a second sliding groove 15, and the other top support rod 14 is fixedly provided with a sliding column 16, and the two sides of the inner wall of the shell 1 are provided with sliding grooves 17, the sliding grooves 17 are slidably provided with racks 18, the racks 18 penetrate through the upper surface of the shell 1, the racks 18 are meshed with the gear wheels 13, and the gear wheels 13 drive the racks 18 to displace in the vertical direction to lift the top support rods 14. The gear wheels 13 on the rotating shaft 12 drive the racks 18 meshed therewith to displace in the vertical direction along the sliding grooves 17 on the shell 1 in the rotating process, the racks 18 gradually push the top support rods 14 in the lifting process, the top support rods 14 are gradually lifted, and the top support rod 14 provided with the sliding column 16 moves along the second sliding movement of the other top support rod 14 connected therewith in the lifting process, until the sliding column 16 moves from one end to the other end of the second sliding groove 15, and finally the top support rods 14 installed in pairs form a triangular support part to support the bottom of the elevator car and ensure the safety of the maintenance personnel.

[0040] Further, the top end of the rack 18 is fixedly provided with a jacking block 19, the jacking block 19 is located below the top support rod 14 and abuts against the top support rod 14. The jacking block 19 is a square block, which has a larger area than the rack 18 and can more fully abut against the top support rod 14 to better complete the jacking action, and the jacking block 19 is located at the center position of the top support rod 14 to better support the top support rod 14.

[0041] Further, one end of the top support rod 14 is hingedly provided with an abutting block 20, which abuts against the bottom of the elevator car to support the elevator car. The abutting block 20 is only installed on the top support rod 14 provided with the second sliding groove 15, and when the top support rod 14 is lifted, the abutting block 20 can smoothly contact the bottom of the elevator car and will not be stuck, the abutting block 20 has a horizontal abutting surface, which abuts against the bottom of the elevator car to have better support and reduce the pressure of the top support rod 14 on the bottom of the elevator car, thereby preventing damage to the bottom of the elevator car during the jacking process.

[0042] The working principle of the safety device for elevator maintenance is as follows:

[0043] In use, the shell 1 of the safety device is inserted into the elevator shaft horizontally along the ground, the two moving blocks 5 on the screw rod 4 are driven to clamp and move the moving rod 3 along the first slide 2 by rotating the screw rod 4, the moving rod 3 drives the connecting arm 9 to move when moving, the connecting arm 9 drives the support arm 8 hinged thereto to move when moving, the support arm 8 abuts against the bottom surface of the pit of the elevator shaft, the belt pulley 10 on the screw rod 4 is driven to rotate at the same time, the belt pulley 10 on the rotating shaft 12 is driven to rotate by the belt, the gear 13 on the rotating shaft 12 is driven to rotate at the same time, the gear 13 drives the rack 18 engaged therewith to displace when rotating, the jacking block 19 on the rack 18 abuts against the jacking rod 14 during the rising of the rack 18, the pair of jacking rods 14 are driven to gradually lift to support the bottom of the elevator car, a safe working space is provided for the maintenance personnel, and the safety of the maintenance personnel is ensured.

[0044] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art can make many possible changes and modifications to the technical scheme of the present application or modify equivalent embodiments without departing from the scope of the technical scheme of the present application. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical scheme of the present application, which does not depart from the content of the technical scheme of the present application, belongs to the protection scope of the technical scheme of the present application.

Claims

1. A safety device for elevator maintenance, comprising a housing (1), an elevator shaft and an elevator car installed in the elevator shaft, characterized in that Also include: The driving assembly is arranged on the shell (1), and the two sides of the shell (1) are provided with first sliding channel (2), the first sliding channel (2) is slidably installed with the moving rod (3), the driving assembly is connected with the moving rod (3) and drives the moving rod (3) to move along the first sliding channel (2); Support assembly, the support assembly is arranged on the shell (1), the support assembly is connected with the moving rod (3), the moving rod (3) drives the support assembly to move to drive the support assembly to stretch to support the bottom surface of the elevator shaft; The transmission assembly is arranged in the shell (1) and is in transmission connection with the driving assembly, and the lifting member is further arranged on the transmission assembly, the lifting member penetrates the shell (1) and is in sliding connection with the shell (1), and the driving assembly is used for driving the transmission assembly to drive the lifting member to ascend or descend; The top support assembly is arranged on the upper surface of the shell (1), and the lifting member drives the top support assembly to be lifted upward to form a triangular support part for supporting the bottom of the elevator car.

2. A safety device for elevator maintenance according to claim 1, characterized in that The driving assembly includes a screw rod (4), the screw rod (4) penetrates the opposite two side walls of the shell (1) and is rotatably connected with the shell (1), the screw rod (4) penetrates the moving rod (3), the screw rod (4) is threadedly connected with two moving blocks (5), and the two moving blocks (5) are located on the two sides of the moving rod (3) and abut against each other with the moving rod (3).

3. A safety device for elevator maintenance according to claim 2, characterized in that The guiding rod (6) is located above the screw rod (4), the guiding rod (6) is slidably installed with two guiding blocks (7), and the two guiding blocks (7) are fixedly connected with the two moving blocks (5) respectively.

4. A safety device for elevator maintenance according to claim 1, characterized in that The support assembly includes two support arms (8) and two connecting arms (9), one end of the support arm (8) and one end of the connecting arm (9) are hingedly installed with each other, the other end of the support arm (8) is hingedly installed with the side wall of the shell (1), and the other end of the connecting arm (9) is hingedly installed with the end of the moving rod (3).

5. A safety device for elevator maintenance according to claim 2, characterized in that The transmission assembly includes four belt pulleys (10), two of which are fixedly installed on the outer side of the screw rod (4), the inside of the shell (1) is fixedly installed with a mounting bracket (11) on both sides, the mounting bracket (11) is located on the two sides of the screw rod (4), the mounting bracket (11) is rotatably installed with a rotating shaft (12), and the other two belt pulleys (10) are fixedly connected with the two rotating shafts (12), the belt pulleys (10) on the screw rod (4) and the belt pulleys (10) on the mounting bracket (11) are in transmission connection through the belt, and the outer side of the rotating shaft (12) is fixedly installed with a gear (13).

6. A safety device for elevator maintenance according to claim 5, characterized in that The top support assembly comprises four top support rods (14) which are hingedly installed on two sides of the upper surface of the shell (1) in pairs, one of the top support rods (14) of one pair is provided with a second sliding groove (15) on one surface, the other top support rod (14) is fixedly provided with a sliding column (16), both sides of the inner wall of the shell (1) are provided with sliding grooves (17), the sliding grooves (17) are slidably provided with racks (18), the racks (18) penetrate through the upper surface of the shell (1), the racks (18) are in mesh with the gear wheels (13), the gear wheels (13) drive the racks (18) to displace in the vertical direction to lift the top support rods (14).

7. A safety device for elevator maintenance according to claim 6, characterized in that The top end of the rack (18) is fixedly provided with a jacking block (19), the jacking block (19) is located below the top support rod (14), and the jacking block (19) abuts against the top support rod (14).

8. A safety device for elevator maintenance according to claim 6, characterized in that One end of the top support rod (14) is hingedly provided with an abutting block (20), the abutting block (20) abuts against the bottom of the elevator car to support the elevator car.

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