Elevator compensation chain extension alarm device

Abstract

The utility model relates to the technical field of elevator equipment, and particularly discloses an elevator compensation chain extension alarm device which comprises a mounting frame, a bidirectional threaded rod, two moving plates, a disc, a holding rod, a grating emitter, a grating receiver, a controller, a steel wire rope extension detection switch, a lifting assembly and a sliding assembly. The two-way threaded rod penetrates through the two moving plates and the disc and is fixedly connected with the two-way threaded rod, the holding rod is fixedly connected with the disc, the grating emitter and the grating receiver are fixedly connected with the corresponding moving plates respectively, the controller is electrically connected with the grating emitter and the grating receiver respectively, and the steel wire rope extension detection switch is electrically connected with the controller. Through the arrangement, the extension condition of the elevator compensation chain can be detected in time, and the elevator can be stopped in time, so that the compensation chain is prevented from being abraded or wound on pit components such as a buffer.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator compensation chain elongation alarm device. Background Art

[0002] During the operation of high-rise and large-capacity elevators, due to changes in the weight of the elevator itself, the number of passengers, etc., additional weight pressure will be generated, which will affect the stability of the elevator. In order to keep the elevator running smoothly, a compensation chain is usually installed to balance the weight of the elevator and avoid safety problems such as shaking and breaking of the elevator due to unbalanced weight.

[0003] However, in the above-mentioned prior art, due to thermal expansion and contraction, the compensation chain has a risk of elongation and hanging on the bottom. If not discovered in time, it will cause wear of the compensation chain and even entangle the bottom pit components such as buffers, resulting in potential hazards of elevator damage and entrapment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an elevator compensation chain elongation alarm device, aiming to solve the technical problem that in the prior art, due to thermal expansion and contraction, the compensation chain has a risk of elongation and hanging on the bottom. If not discovered in time, it will cause wear of the compensation chain and even entangle the bottom pit components such as buffers, resulting in potential hazards of elevator damage and entrapment.

[0005] To achieve the above purpose, an elevator compensation chain elongation alarm device adopted by the utility model includes an installation frame, a bidirectional threaded rod, two moving plates, a disc, a grip rod, a grating emitter, a grating receiver, a controller, a wire rope elongation detection switch, a lifting component, and a sliding component. The installation frame is fixedly connected to the lifting component. The bidirectional threaded rod passes through the two moving plates respectively and is in threaded cooperation with the two moving plates. The two ends of the bidirectional threaded rod are rotatably connected to the installation frame respectively. The disc is fixedly connected to the bidirectional threaded rod and is located at one end of the bidirectional threaded rod. The grip rod is fixedly connected to the disc and is located on one side of the disc. The grating emitter and the grating receiver are fixedly connected to the corresponding moving plates respectively. The sliding component is arranged above the installation frame. The controller is electrically connected to the grating emitter and the grating receiver respectively. The wire rope elongation detection switch is electrically connected to the controller.

[0006] Wherein, the sliding component includes two sliding plates, two fixing plates, and a sliding rod. The two fixing plates are fixedly connected to the installation frame respectively. The two sliding plates are fixedly connected to the two moving plates respectively. The sliding rod passes through the two sliding plates respectively and is in sliding connection with the two sliding plates respectively. The two ends of the sliding rod are fixedly connected to the two fixing plates respectively.

[0007] Among them, the lifting assembly includes a support frame, a lifting plate, two guiding blocks, a driving member and a mounting member. One end of the lifting plate is fixedly connected to the mounting frame, and the other end of the lifting plate penetrates through the support frame. The support frame has two rectangular grooves. One ends of the two guiding blocks are respectively fixedly connected to the lifting plate, and the other ends of the two guiding blocks are respectively inserted into the corresponding rectangular grooves. The driving member is in threaded cooperation with the lifting plate, and the mounting member is arranged at the bottom of the support frame.

[0008] Among them, the driving member includes a motor and a lead screw. The lead screw penetrates through the lifting plate and is in threaded cooperation with the lifting plate. Two ends of the lead screw are respectively rotatably connected to the support frame. The motor is arranged at the upper end of the support frame, and an output end of the motor is fixedly connected to one end of the lead screw.

[0009] Among them, the mounting member includes a bottom plate and a plurality of bolts. The bottom plate is fixedly connected to the support frame and is located at the bottom surface of the support frame. The plurality of bolts respectively penetrate through the bottom plate.

[0010] When a compensation chain elongation alarm device of the present utility model is specifically used, the lifting assembly is installed on the ground of an elevator shaft. The lifting assembly drives the mounting frame to move up and down, so as to adjust the heights of the grating emitter and the grating receiver, such that the grating emitter and the grating receiver are located at the lowest end in the free suspension state of the compensation chain. Then rotate the grip rod, the grip rod drives the disc to rotate, the disc drives the bidirectional threaded rod to rotate, so that the two moving plates move relatively, thereby adjusting the distance between the grating emitter and the grating receiver. Then connect the wire rope elongation detection switch to the elevator safety circuit. When the compensation chain elongates, it will block the signal between the grating emitter and the grating receiver. At this time, the controller controls the wire rope elongation detection switch to disconnect, so that the elevator safety circuit is disconnected and the elevator stops. After on-site inspection by maintenance personnel, the length of the compensation chain is adjusted. By this method, it can effectively solve the problem in the prior art that due to the reason of thermal expansion and contraction, the compensation chain has a risk of elongation and hanging on the bottom. If it fails to be discovered in time, it will cause wear of the compensation chain, and even entangle with bottom pit components such as buffers, resulting in potential hazards of elevator damage and entrapment of people. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model 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 drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 is the structural schematic diagram of the present utility model.

[0013] Figure 2 is the perspective view of the present utility model.

[0014] Figure 3 is the circuit diagram of the present utility model for controlling the wire rope elongation detection switch.

[0015] Figure 4 is the circuit diagram of the wire rope elongation detection switch of the present utility model connected to the elevator safety circuit.

[0016] 101 - mounting frame, 102 - bidirectional threaded rod, 103 - moving plate, 104 - disc, 105 - grip rod, 106 - grating emitter, 107 - grating receiver, 108 - controller, 109 - wire rope elongation detection switch, 110 - sliding plate, 111 - fixing plate, 112 - sliding rod, 113 - support frame, 114 - rectangular groove, 115 - lifting plate, 116 - guiding block, 117 - motor, 118 - lead screw, 119 - bottom plate, 120 - bolt. Detailed implementation manners

[0017] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0018] Please refer to Figures 1 to 4 where Figure 1 is the structural schematic diagram of the present utility model, Figure 2 is the perspective view of the present utility model, Figure 3 is the circuit diagram of the present utility model for controlling the wire rope elongation detection switch, Figure 4 is the circuit diagram of the wire rope elongation detection switch of the present utility model connected to the elevator safety circuit.

[0019] The present utility model provides an elevator compensation chain elongation alarm device, which includes a mounting frame 101, a bidirectional threaded rod 102, two moving plates 103, a disc 104, a grip rod 105, a grating emitter 106, a grating receiver 107, a controller 108, a wire rope elongation detection switch 109, a lifting assembly and a sliding assembly. The mounting frame 101 is fixedly connected to the lifting assembly. The bidirectional threaded rod 102 passes through the two moving plates 103 respectively and is in threaded cooperation with the two moving plates 103 respectively. The two ends of the bidirectional threaded rod 102 are rotatably connected to the mounting frame 101. The disc 104 is fixedly connected to the bidirectional threaded rod 102 and is located at one end of the bidirectional threaded rod 102. The grip rod 105 is fixedly connected to the disc 104 and is located on one side of the disc 104. The grating emitter 106 and the grating receiver 107 are respectively fixedly connected to the corresponding moving plates 103. The sliding assembly is arranged above the mounting frame 101. The controller 108 is electrically connected to the grating emitter 106 and the grating receiver 107 respectively. The wire rope elongation detection switch 109 is electrically connected to the controller 108.

[0020] In this embodiment, the lifting assembly is installed on the ground of the elevator shaft. The lifting assembly drives the mounting frame 101 to move up and down, so as to adjust the heights of the grating emitter 106 and the grating receiver 107, so that the grating emitter 106 and the grating receiver 107 are located at the lowest end in the free hanging state of the compensation chain. Then rotate the grip rod 105. The grip rod 105 drives the disc 104 to rotate. The disc 104 drives the bidirectional threaded rod 102 to rotate, so that the two moving plates 103 move relatively, so as to adjust the distance between the grating emitter 106 and the grating receiver 107. Then connect the wire rope elongation detection switch 109 to the elevator safety circuit. When the compensation chain elongates, it will block the signal between the grating emitter 106 and the grating receiver 107. At this time, the controller 108 controls the wire rope elongation detection switch 109 to disconnect, so that the elevator safety circuit is disconnected and the elevator stops. After on-site inspection by maintenance personnel, the length of the compensation chain is adjusted.

[0021] Further, the sliding assembly includes two sliding plates 110, two fixing plates 111 and a sliding rod 112. The two fixing plates 111 are both fixedly connected to the mounting frame 101. The two sliding plates 110 are respectively fixedly connected to the two moving plates 103. The sliding rod 112 passes through the two sliding plates 110 respectively and is slidably connected to the two sliding plates 110 respectively. The two ends of the sliding rod 112 are fixedly connected to the two fixing plates 111 respectively.

[0022] In this embodiment, the two moving plates 103 move respectively to drive the two sliding plates 110 to slide on the sliding rods 112, thereby guiding the two moving plates 103.

[0023] Furthermore, the lifting assembly includes a support frame 113, a lifting plate 115, two guiding blocks 116, a driving member and a mounting member. One end of the lifting plate 115 is fixedly connected to the mounting frame 101, and the other end of the lifting plate 115 penetrates through the support frame 113. The support frame 113 has two rectangular slots 114. One ends of the two guiding blocks 116 are respectively fixedly connected to the lifting plate 115, and the other ends of the two guiding blocks 116 are respectively inserted into the corresponding rectangular slots 114. The driving member is in threaded cooperation with the lifting plate 115, and the mounting member is arranged at the bottom of the support frame 113.

[0024] In this embodiment, the support frame 113 is fixed to the ground of the elevator shaft through the mounting member. By rotating the driving member, the lifting plate 115 moves up and down, and the lifting plate 115 drives the mounting frame 101 to move up and down.

[0025] Furthermore, the driving member includes a motor 117 and a lead screw 118. The lead screw 118 penetrates through the lifting plate 115 and is in threaded cooperation with the lifting plate 115. Two ends of the lead screw 118 are respectively rotatably connected to the support frame 113. The motor 117 is arranged at the upper end of the support frame 113, and the output end of the motor 117 is fixedly connected to one end of the lead screw 118.

[0026] In this embodiment, when the motor 117 is started, the output end of the motor 117 drives the lead screw 118 to rotate, so that the lifting plate 115 moves up and down.

[0027] Furthermore, the mounting member includes a bottom plate 119 and a plurality of bolts 120. The bottom plate 119 is fixedly connected to the support frame 113 and is located at the bottom surface of the support frame 113. The plurality of bolts 120 respectively penetrate through the bottom plate 119.

[0028] In this embodiment, the bottom plate 119 is fixed to the ground of the elevator shaft by using the plurality of bolts 120, thereby installing the support frame 113.

[0029] Advantages of the present utility model: Multiple bolts 120 are used to fix the bottom plate 119 to the ground of the elevator shaft, thereby installing the support frame 113. The motor 117 is started, and the output end of the motor 117 drives the lead screw 118 to rotate, causing the lifting plate 115 to move up and down. The lifting plate 115 drives the installation frame 101 to move up and down, thereby adjusting the heights of the grating emitter 106 and the grating receiver 107, so that the grating emitter 106 and the grating receiver 107 are located at the lowest end in the free hanging state of the compensation chain. Then, the grip rod 105 is rotated. The grip rod 105 drives the disc 104 to rotate, and the disc 104 drives the bidirectional threaded rod 102 to rotate, thereby causing the two moving plates 103 to move relatively, so as to adjust the distance between the grating emitter 106 and the grating receiver 107. Then, the wire rope elongation detection switch 109 is connected to the elevator safety circuit. When the compensation chain elongates, the signal between the grating emitter 106 and the grating receiver 107 will be blocked. At this time, the controller 108 controls the wire rope elongation detection switch 109 to disconnect, causing the elevator safety circuit to disconnect and the elevator to stop. After on-site inspection by maintenance personnel, the length of the compensation chain is adjusted. This method can effectively solve the problem in the prior art that due to thermal expansion and contraction, the compensation chain has a risk of elongation and hanging on the bottom. If not discovered in time, it will cause wear of the compensation chain and even entangle with bottom pit components such as buffers, resulting in potential problems of elevator damage and entrapment of passengers.

[0030] The above disclosure is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An elevator compensation chain elongation alarm device, characterized in that it includes an installation frame, a bidirectional threaded rod, two moving plates, a disc, a grip rod, a grating emitter, a grating receiver, a controller, a wire rope elongation detection switch, a lifting component and a sliding component. The installation frame is fixedly connected to the lifting component. The bidirectional threaded rod passes through the two moving plates respectively and is in threaded cooperation with the two moving plates. The two ends of the bidirectional threaded rod are rotatably connected to the installation frame respectively. The disc is fixedly connected to the bidirectional threaded rod and is located at one end of the bidirectional threaded rod. The grip rod is fixedly connected to the disc and is located on one side of the disc. The grating emitter and the grating receiver are fixedly connected to the corresponding moving plates respectively. The sliding component is arranged above the installation frame. The controller is electrically connected to the grating emitter and the grating receiver respectively. The wire rope elongation detection switch is electrically connected to the controller.

2. The elevator compensation chain elongation alarm device according to claim 1, characterized in that the sliding component includes two sliding plates, two fixing plates and a sliding rod. The two fixing plates are both fixedly connected to the installation frame. The two sliding plates are fixedly connected to the two moving plates respectively. The sliding rod passes through the two sliding plates respectively and is slidably connected to the two sliding plates. The two ends of the sliding rod are fixedly connected to the two fixing plates respectively.

3. The elevator compensation chain elongation alarm device according to claim 2, characterized in that the lifting component includes a support frame, a lifting plate, two guiding blocks, a driving member and a mounting member. One end of the lifting plate is fixedly connected to the installation frame. The other end of the lifting plate passes through the support frame. The support frame has two rectangular slots. One ends of the two guiding blocks are fixedly connected to the lifting plate respectively. The other ends of the two guiding blocks are respectively inserted into the corresponding rectangular slots. The driving member is in threaded cooperation with the lifting plate. The mounting member is arranged at the bottom of the support frame.

4. The elevator compensation chain elongation alarm device according to claim 3, characterized in that the driving member includes a motor and a lead screw. The lead screw passes through the lifting plate and is in threaded cooperation with the lifting plate. The two ends of the lead screw are rotatably connected to the support frame respectively. The motor is arranged at the upper end of the support frame. The output end of the motor is fixedly connected to one end of the lead screw.

5. The elevator compensation chain elongation alarm device according to claim 4, characterized in that the mounting member includes a bottom plate and a plurality of bolts. The bottom plate is fixedly connected to the support frame and is located at the bottom surface of the support frame. The plurality of bolts pass through the bottom plate respectively.

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