Closed-loop automatic door opening transmission control device of construction hoist

Abstract

The utility model discloses a closed loop type automatic door opening transmission control device of a construction hoist, which comprises a chain wheel arranged on a carriage body of the construction hoist and connected with a speed reducer and a chain arranged on the chain wheel, one end of the chain is connected with a counter weight, and the other end of the chain is connected on a connecting plate arranged on an access door of the construction hoist; the guide wheel is arranged on the carriage body, the steel wire rope is wound on the guide wheel, one end of the steel wire rope is connected to the connecting plate, the other end of the steel wire rope is connected to the counter weight, and the chain, the connecting plate, the steel wire rope and the counter weight form a closed-loop structure. According to the utility model, the safety of automatic opening and closing of the construction hoist can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a closed-loop automatic door opening transmission control device for a construction hoist. Background Art

[0002] The door opening transmission control device of the intelligent construction elevator includes a gear rack type and a chain type. The existing chain-type door opening transmission control device needs to ensure high precision in the elevator production process. If the slide is too large, the counterweight is easy to hit back and forth inside, causing a large abnormal noise; if the slide is small, the counterweight is easy to get stuck in the slide when the door moves upward, or the counterweight suddenly falls rapidly at a certain moment, causing a safety hazard. If the counterweight does not fall, and the motor is still rotating, the chain will accumulate in the slide. If the door needs to be closed at this time, the motor rotates in the opposite direction, the door moves downward, and the counterweight moves upward, because the chain has been accumulated before, the counterweight and the chain of the sprocket section are in a loose state, which is easy to cause the chain to be off, causing the door to fall rapidly, causing a safety hazard, and because of the occurrence of failures, the maintenance cost and time are greatly increased. Utility Model Content

[0003] The purpose of the utility model is to provide a closed-loop automatic door opening transmission control device for a construction elevator to solve the problem of safe opening and closing of the entrance and exit door of the construction elevator and avoid the above-mentioned safety hazards of counterweights and chains.

[0004] In order to solve the above-mentioned technical problems, the utility model provides a closed-loop automatic door opening transmission control device for a construction elevator, including a sprocket connected to a reducer and a chain thereon arranged on the body of the construction elevator, one end of the chain is connected to a counterweight, and the other end of the chain is connected to a connecting plate arranged on the access door of the construction elevator; it also includes a guide wheel arranged on the body and a steel wire rope wound thereon, one end of the steel wire rope is connected to the connecting plate, and the other end of the steel wire rope is connected to the counterweight, and the chain, connecting plate, steel wire rope and counterweight form a closed-loop structure.

[0005] Furthermore, in the closed-loop automatic door opening transmission control device for the construction elevator provided by the utility model, the chain is connected to the upper end of the counterweight, and the wire rope is arranged at the lower end of the counterweight through an adjusting bolt or an anchor.

[0006] Furthermore, in the closed-loop automatic door opening transmission control device for the construction elevator provided by the utility model, the guide wheel is a nylon wheel.

[0007] Furthermore, in the closed-loop automatic door opening transmission control device for the construction elevator provided by the utility model, the counterweight slides in a slideway in the compartment.

[0008] Furthermore, in the closed-loop automatic door opening transmission control device for the construction elevator provided by the utility model, the counterweight is a concrete block or an iron block.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The closed-loop automatic door opening transmission control device for the construction elevator provided by the utility model is connected to the connecting plate and the counterweight of the entrance and exit door of the construction elevator respectively through the steel wire rope wound on the guide wheel, so that the chain, the connecting plate, the steel wire rope and the counterweight form a closed-loop structure. When the construction elevator drives the sprocket to rotate through the reducer, the counterweight is pulled in a two-way cycle through the chain, the connecting plate and the steel wire rope, and the connecting plate and the entrance and exit door are raised and lowered synchronously to realize the opening and closing of the entrance and exit door of the construction elevator. Compared with the open-loop structure composed of the chain, the connecting plate and the counterweight of the traditional automatic door opening transmission control device, the counterweight can be pulled in two directions, the counterweight will not be stuck, and will not be affected by the size of the slide slot, and the chain will not be piled up, and the chain will not be decoupled, thereby improving the safety of the automatic opening and closing of the construction elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structure diagram of a closed-loop automatic door opening transmission control device for a construction hoist;

[0012] Figure 2 It is the control principle diagram of the opening of the access door of the construction hoist;

[0013] Figure 3 It is the control principle diagram of the closing of the access door of the construction hoist;

[0014] As shown in the figure:

[0015] 100. Closed-loop automatic door opening transmission control device;

[0016] 110, reducer, 120, sprocket, 130, chain, 140, connecting plate, 150, guide wheel, 160, wire rope, 170, counterweight, 180, adjusting bolt;

[0017] 200, compartment body, 201, upper limit plate, 202, lower limit plate, 203, limiter, 204, slide, 205, entry and exit door. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings: According to the following description, the advantages and features of the utility model will be more clearly understood. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0019] Please refer to Figure 1 The embodiment of the utility model provides a closed-loop automatic door opening transmission control device 100 for a construction elevator, including a sprocket 120 and a chain 130 thereon, which is arranged on a body 200 of the construction elevator and connected to a reducer 110, one end of the chain 130 is connected to a counterweight 170, and the other end of the chain 130 is connected to a connecting plate 140 arranged on an entry and exit door 205 of the construction elevator; it also includes a guide wheel 150 arranged on the body 200 and a steel wire rope 160 wound thereon, one end of the steel wire rope 160 is connected to the connecting plate 140, and the other end of the steel wire rope 160 is connected to the counterweight 170, and the chain 130, the connecting plate 140, the steel wire rope 160 and the counterweight 170 form a closed-loop structure.

[0020] The closed-loop automatic door opening transmission control device 100 of the construction elevator provided by the embodiment of the utility model is connected to the connecting plate 140 and the counterweight 170 of the entrance and exit door 205 of the construction elevator respectively through the wire rope 160 wound on the guide wheel 150, so that the chain 130, the connecting plate 140, the wire rope 160 and the counterweight 170 form a closed-loop structure. When the construction elevator drives the sprocket 120 to rotate through the reducer 110, the counterweight 170 is pulled in a two-way cycle through the chain 130, the connecting plate 140 and the wire rope 160, and the connecting plate 140 and the entrance and exit door 205 are raised and lowered synchronously to realize the opening and closing of the entrance and exit door 205 of the construction elevator. Compared with the open-loop structure of the conventional automatic door opening transmission control device consisting of the chain 130, the connecting plate 140 and the counterweight 170, the counterweight 170 can achieve pulling in two directions, the counterweight 170 will not get stuck, and will not be affected by the size of the chute. The chain 130 will not pile up, and the chain will not be decoupled, thereby improving the safety of the automatic opening and closing of the construction elevator. The motor damage caused by the motor getting stuck during the movement is reduced, and a closer relationship is established between the door and the counterweight. At the same time, when the door is opened or closed, due to its closed-loop characteristics, the worker cannot open and close it by himself, preventing the door from accidentally falling and injuring the staff.

[0021] Please refer to Figure 1 In order to balance the bidirectional pulling force of the counterweight 170, the closed-loop automatic door opening transmission control device 100 of the construction hoist provided by the embodiment of the utility model has the chain 130 connected to the upper end of the counterweight 170, and the wire rope 160 is arranged at the lower end of the counterweight 170. Thus, the counterweight 170 can be pulled stably in both directions. In order to adjust the preload force of the wire rope 160 during installation, the wire rope 160 can be connected to the counterweight 170 by adjusting the bolt 180. Of course, the preload force of the wire rope 160 can also be adjusted by the anchor in combination with the basket bolt.

[0022] Please refer to Figure 1In order to avoid the fire hazard caused by static electricity generated by the friction of the wire rope 160 guiding on the guide wheel 150, the closed-loop automatic door opening transmission control device 100 of the construction elevator provided by the embodiment of the utility model, the guide wheel 150 is a non-metallic wheel such as a nylon wheel.

[0023] Please refer to Figure 1 In order to balance the lifting of the counterweight 170, the closed-loop automatic door opening transmission control device 100 of the construction hoist provided by the embodiment of the utility model is that the counterweight 170 slides in the slideway 204 in the compartment 200. The counterweight 170 is restricted to slide in the slideway 204 to avoid the failure of separation.

[0024] Please refer to Figure 1 In the closed-loop automatic door opening transmission control device 100 for a construction elevator provided by an embodiment of the utility model, the counterweight 170 can be a concrete block or an iron block.

[0025] Please refer to Figure 2 The control principle of the closed-loop automatic door opening transmission control device 100 of the construction elevator provided by the embodiment of the utility model for opening the access door 205 is as follows:

[0026] After the construction elevator is automatically leveled, the encoder will transmit a signal to the frequency converter of the construction elevator (not shown in the figure). After receiving the command, the frequency converter will send a signal to the motor (not shown in the figure). The motor starts, and the motor drives the reducer 110 to drive the sprocket 120 to rotate. In the closed-loop transmission: the inner side is connected to the access door 205, and the rotation of the sprocket 120 drives the chain 130 to rise. The chain 130 pulls the access door 205 up through the connecting plate 140. At the same time, the access door 205 rises, pulling the wire rope 160 to rise. At the connecting part of the outer slideway 204 with the counterweight 170, after the wire rope 160 is subjected to the upward pulling force of the entry and exit door 205 (the wire rope 160 is always in a tensioned state under the action of the adjusting bolt), it rotates around the bottom guide wheel 150, and the wire rope 160 on the entry and exit door 205 side rises, and the counterweight 170 side drops. The counterweight 170 drops under the dual forces of the downward pulling force of the wire rope 160 and its own gravity. When the counterweight 170 is continuously subjected to the pulling force, it avoids the accumulation of the chain 130 stuck in the slideway 204. At the same time, the stability is enhanced, avoiding the collision of the counterweight 170 on the slideway 204 and reducing the occurrence of abnormal noise. When the lower limit plate 202 of the entry and exit door 205 hits the limiter 203, the frequency converter sends a stop signal to the motor, the motor receives the command to stop, and the entry and exit door 205 stops rising.

[0027] Please refer to Figure 3 The control principle of the closed-loop automatic door opening transmission control device 100 for the construction hoist provided by the embodiment of the utility model for closing the door is as follows:

[0028] After a call is made to go to a designated floor in the compartment 200, the encoder transmits a signal to the frequency converter. After receiving the command, the frequency converter sends a signal to the motor, and the motor starts, and the motor drives the reducer 110 to drive the sprocket 120 to rotate. When the access door 205 is closed and opened, the motor rotates in opposite directions. In the closed-loop transmission: in the outer slideway 204, at the part connected to the counterweight 170, the sprocket 120 rotates to drive the chain 130 to rise, and the chain 130 pulls the counterweight 170 and rises. After being pulled lateral to the counterweight 170, the wire rope 160 rotates around the bottom guide wheel 150, and the wire rope 160 descends on the side of the access door 205. At the inner part connected to the access door 205, the access door 205 descends under the dual forces of the downward pulling force of the wire rope 160 and its own gravity. When it reaches the bottom, the upper limit plate 201 of the access door 205 hits the limiter 203, and the inverter sends a stop signal to the motor. The motor receives the command to stop, and the access door 205 stops descending.

[0029] It should be noted that the closed-loop automatic door opening transmission control device 100 for a construction elevator provided in the embodiment of the utility model, the frequency converter and the motor are all existing structures in the field and shall not be used as limitations of the utility model.

[0030] The closed-loop automatic door opening transmission control device 100 for a construction hoist provided by the embodiment of the utility model has the advantage of low noise when the door is opened and closed through the transmission mode of chains and wire ropes and the bidirectional pulling of counterweights. The assembly difficulty of chains and wire ropes is low, and compared with the transmission mode of gear rack structure, it effectively solves the safety hazards of counterweights and slideways, reduces the risk of failure, improves the overall safety factor, and has the advantage of low failure rate.

[0031] The present utility model is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the described embodiments of the present utility model belong to the scope of protection of the present utility model. Those skilled in the art can make other levels of modifications and changes to the present utility model. In this way, if these modifications and changes of the present utility model fall within the scope of the claims of the present utility model, the present utility model is also intended to include these changes and changes.

Claims

1. A closed-loop automatic door opening transmission control device for a construction hoist, characterized in that: It includes a sprocket connected to a reducer and a chain on the sprocket, one end of the chain is connected to a counterweight, and the other end of the chain is connected to a connecting plate provided on an access door of the construction elevator; it also includes a guide wheel provided on the car body and a steel wire rope wound thereon, one end of the steel wire rope is connected to the connecting plate, and the other end of the steel wire rope is connected to the counterweight, and the chain, connecting plate, steel wire rope and counterweight form a closed loop structure.

2. The closed-loop automatic door opening transmission control device for a construction hoist according to claim 1 is characterized in that: The chain is connected to the upper end of the counterweight, and the steel wire rope is arranged at the lower end of the counterweight through an adjusting bolt or an anchor.

3. The closed-loop automatic door opening transmission control device for a construction hoist according to claim 1, characterized in that: The guide wheel is a nylon wheel.

4. The closed-loop automatic door opening transmission control device for a construction hoist according to claim 1, characterized in that: The counterweight slides in a slideway in the body.

5. The closed-loop automatic door opening transmission control device for a construction hoist according to claim 1, characterized in that: The counterweight is a concrete block or an iron block.

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