A rear-mounted household elevator

Abstract

The present invention discloses a rear-mounted household elevator, which relates to the field of elevators. To achieve the above-mentioned purpose, the technical solution of the present invention includes an elevator body and a buffer device, which is characterized in that the buffer device includes an outer cylinder, an inner cylinder and a trigger assembly; the outer cylinder is sleeved with an inner cylinder, the upper end of the inner cylinder extends upward from the upper cylinder mouth of the outer cylinder, a first spring is provided in the outer cylinder, and the upper and lower ends of the first spring respectively abut against the lower end of the inner cylinder and the lower end of the outer cylinder; the trigger assembly includes a support plate, a second spring, a sliding pin, a contact plate and an isolation layer; the support plate is horizontally arranged on the inner upper part of the outer cylinder, the support plate is provided with a sliding hole and an air outlet hole communicating with the inside and the outside, the sliding pin is vertically slidably matched in the sliding hole, and can take into account the use scenarios of routine maintenance and buffering.

Description

Technical Field

[0001] The invention relates to a rear-mounted household elevator, and mainly relates to the field of elevators. Background Art

[0002] The elevator itself is a complete transportation equipment. It adopts a variety of safety measures to eliminate safety hazards such as falling and hitting the top. As long as the elevator is used correctly and regularly maintained and inspected, there will be no safety accidents. The main safety protection devices are speed limiters, safety clamps, and buffers. The buffer is set at the bottom of the elevator shaft. When the elevator goes down and contacts the buffer, it can prevent the elevator from contacting the ground. The existing elevator buffer uses springs for buffering. This method uses springs because the elastic coefficient of the spring is theoretically unchanged. During normal maintenance, it is necessary for it to provide sufficient supporting force. When it plays a buffering role, its supporting force needs to be appropriately weakened so that there is enough compression stroke to reduce the impact on the elevator body. Therefore, it is difficult for a simple spring to take into account the above two usage scenarios. Summary of the invention

[0003] In view of the deficiencies of the above-mentioned prior art, the present invention proposes a rear-mounted home elevator, so that when the internal contact plate is subjected to a sufficiently large impact, the sliding pin will pierce the isolation layer, thereby allowing the internal air to communicate with the outside. Therefore, the inner cylinder and the outer cylinder will obtain a larger contraction distance, reducing the impulse received by the elevator body, thereby achieving a buffering effect, and being able to take into account both routine maintenance and buffering usage scenarios.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present invention is: comprising an elevator body and a buffer device, characterized in that the buffer device comprises an outer tube, an inner tube and a trigger assembly; the inner tube is sleeved in the outer tube, the upper end of the inner tube extends upward from the upper tube opening of the outer tube, a first spring is arranged in the outer tube, and the upper and lower ends of the first spring respectively abut against the lower end of the inner tube and the lower end of the outer tube; the trigger assembly comprises a support plate, a second spring, a sliding pin, a contact plate and an isolation layer; the support plate is horizontally arranged at the upper inner part of the outer tube, and the support plate is provided with a connecting The sliding hole and the air outlet hole are connected inside and outside, the sliding pin is vertically slidably fitted in the sliding hole, the upper end of the sliding pin extends out of the upper tube mouth of the inner tube, and the contact plate is fixed to the upper end of the sliding pin above the inner tube, the isolation layer is located below the support plate, the second spring is sleeved on the sliding pin, the upper and lower ends of the second spring respectively abut against the upper surface of the support plate and the lower surface of the contact plate, and the isolation layer isolates the inner tube from top to bottom; when the pressure above the contact plate is greater than the set value, the lower end of the sliding pin will slide down and pierce the isolation layer.

[0005] The technical principles and beneficial effects of the present invention are as follows:

[0006] In this solution, the outer tube and the inner tube are slidably matched, and a first spring is arranged in the outer tube. Here, the first spring and the gas inside the outer tube and the inner tube can play a certain buffering role when the upper end of the inner tube receives impact.

[0007] The contact plate set at the upper end of the inner tube will drive the sliding pin to slide downward when it is subjected to downward pressure. When the elevator body is operating normally and in contact with the contact plate, the pressure applied by the elevator body to the contact plate is not enough to drive the sliding pin downward to puncture the isolation layer. The pressure on the contact plate is below the set value. The space inside the inner tube and the outer tube is independent. The outer tube and the inner tube shrink to compress the air. However, since the internal gas remains unchanged, if the internal gas does not flow to the outside, it is difficult to continue to compress when the shrinkage distance of the outer tube and the inner tube reaches a certain range; however, if the elevator loses control and slides down too fast, the pressure drop applied by the elevator body to the contact plate at this time is greater than the safety set value, and the contact plate will drive the sliding pin downward to puncture the isolation layer. Once the isolation layer is punctured, the closed space formed by the inner tube and the outer tube will be connected to the outside, the internal gas can be released to the outside, the distance the inner tube slides downward can be increased, and the reverse impulse of the relative contact plate to the elevator body will be reduced, thereby achieving protection of the elevator body.

[0008] Due to the existence of the isolation layer, when the elevator body falls too fast and hits the contact plate, causing the internal contact plate to be impacted sufficiently, the sliding pin will pierce the isolation layer, thereby allowing the internal air to communicate with the outside. Therefore, the inner tube and the outer tube will obtain a larger contraction distance, reducing the impulse received by the elevator body, thereby achieving a buffering effect.

[0009] During maintenance, the isolation layer is not punctured, and the first spring and air inside the inner and outer tubes provide support at the same time, so the support force will be greater. During buffering, the isolation layer is punctured, and the internal air can flow out slowly, providing less support force. Therefore, it can take into account both routine maintenance and buffering usage scenarios.

[0010] Preferably, a spacing is left between the isolation layer and the support plate, and a limit plate for controlling the deformation amount of the isolation layer protruding upward is provided above the isolation layer. The limit plate prevents the isolation layer from being damaged due to deformation before the contact plate reaches a set value. A window is provided at the lower end of the limit plate corresponding to the sliding pin. When the elevator collides with the contact plate normally, the internal air will also be compressed to a certain extent. The existence of the limit plate can prevent the isolation layer from being damaged when the internal air is compressed.

[0011] Preferably, a slide cylinder is provided on the upper surface of the support plate, the lower end of the slide cylinder is docked with the window, the upper end of the slide cylinder is located below the upper tube mouth of the inner tube, the slide pin is slidably fitted in the slide cylinder, and the microphone can provide guidance for the slide pin to slide up and down.

[0012] Preferably, a limit platform is provided inwardly at the upper tube opening of the outer tube, a piston plate is slidably fitted inside the outer tube, the lower end of the inner tube is fixed to the piston plate, and the piston plate is provided with a connecting hole connecting the outer tube and the inner tube. The cooperation between the limit platform and the piston plate can prevent the inner tube from slipping relative to the outer tube.

[0013] Preferably, the outer cylinder is located below the ground, and after the inner cylinder completely slides into the outer cylinder, the ground is in contact with the elevator body. Since the contact area is large enough and the inner cylinder has sufficiently dissipated the impulse of the elevator body in the early stage, the downward sliding movement of the elevator body can be smoothly stopped by the ground, thereby preventing the outer cylinder from being located on the ground and generating excessive pressure on the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A partial enlarged view of .

[0017] Among them, the outer tube 1, the inner tube 2, the first spring 3, the piston plate 4, the sliding pin 5, the contact plate 6, the second spring 7, the sliding tube 8, the support plate 9, the sliding hole 10, the air outlet 11, the limit plate 12, and the isolation layer 13. DETAILED DESCRIPTION

[0018] The technical solutions in the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] like Figure 1 As shown, the embodiment of the present invention includes an elevator body and a buffer device.

[0020] The buffer device comprises an outer tube 1, an inner tube 2 and a trigger assembly.

[0021] The inner cylinder 2 is sleeved in the outer cylinder 1, and the upper end of the inner cylinder 2 extends upward from the upper cylinder opening of the outer cylinder 1. A first spring 3 is arranged in the outer cylinder 1, and the upper and lower ends of the first spring 3 respectively abut against the lower ends of the inner cylinder 2 and the outer cylinder 1.

[0022] The trigger assembly includes a support plate 9, a second spring 7, a sliding pin 5, a contact plate 6 and an isolation layer 13; the support plate 9 is horizontally arranged at the upper part of the outer tube 1, and the support plate 9 is provided with a sliding hole 10 and an air outlet 11 connecting the inside and the outside, the sliding pin 5 is vertically slidably fitted in the sliding hole 10, the upper end of the sliding pin 5 extends out of the upper tube opening of the inner tube 2, and the contact plate 6 is fixed to the upper end of the sliding pin 5 above the inner tube 2, the isolation layer 13 is located below the support plate 9, the second spring 7 is sheathed on the sliding pin 5, and the upper and lower ends of the second spring 7 are respectively against the upper surface of the support plate 9 and the lower surface of the contact plate 6, and the isolation layer 13 isolates the inner tube 2 from top to bottom; when the pressure on the contact plate 6 is greater than the set value, the lower end of the sliding pin 5 will slide down and puncture the isolation layer 13. The isolation layer is made of a material that is easy to puncture and has a certain sealing property, such as rubber.

[0023] There is a gap between the isolation layer 13 and the support plate 9. A limit plate 12 is provided above the isolation layer 13 to control the deformation of the isolation layer 13 protruding upward. The limit plate 12 prevents the isolation layer 13 from being damaged due to deformation before the contact plate 6 reaches a set value. A window is provided at the lower end of the limit plate 12 corresponding to the sliding pin 5. When the elevator collides with the contact plate 6 normally, the internal air will be compressed to a certain extent. The existence of the limit plate 12 can prevent the isolation layer 13 from being damaged when the internal air is compressed.

[0024] A slide cylinder 8 is provided on the upper surface of the support plate 9, the lower end of the slide cylinder 8 is connected to the window, the upper end of the slide cylinder 8 is located below the upper tube mouth of the inner tube 2, the slide pin 5 is slidably fitted in the slide cylinder 8, and the microphone can provide a guide for the slide pin 5 to slide up and down.

[0025] A limit platform is provided inwardly at the upper tube opening of the outer tube 1, and a piston plate 4 is slidably fitted inside the outer tube 1. The lower end of the inner tube 2 is fixed to the piston plate 4, and the piston plate 4 is provided with a connecting hole connecting the outer tube 1 and the inner tube 2. The cooperation between the limit platform and the piston plate 4 can prevent the inner tube 2 from slipping relative to the outer tube 1.

[0026] The outer tube 1 is located below the ground. After the inner tube 2 completely slides into the outer tube 1, the ground is in contact with the elevator body. Since the contact area is large enough and the inner tube 2 has sufficiently dissipated the impulse of the elevator body in the early stage, the downward sliding movement of the elevator body can be smoothly stopped by the ground, thereby preventing the outer tube 1 from being located on the ground and generating excessive pressure on the elevator.

[0027] The contact plate 6 is arranged at the upper end of the inner tube 2. When the contact plate 6 is subjected to downward pressure, it will drive the sliding pin 5 to slide downward. When the elevator body is running normally and in contact with the contact plate 6, the pressure applied by the elevator body to the contact plate 6 is not enough to drive the sliding pin 5 downward to pierce the isolation layer 13. The pressure applied to the contact plate 6 is below the set value. The space inside the inner tube 2 and the outer tube 1 is independent. The outer tube 1 and the inner tube 2 shrink to compress the air. However, since the internal gas does not change, if the internal gas does not flow to the outside, it is difficult to continue to compress when the shrinkage distance of the outer tube 1 and the inner tube 2 reaches a certain range; however, if the elevator loses control and slides downward too fast, the pressure drop applied by the elevator body to the contact plate 6 at this time is greater than the safety set value, and the contact plate 6 will drive the sliding pin 5 downward to pierce the isolation layer 13. Once the isolation layer 13 is pierced, the closed space formed by the inner tube 2 and the outer tube 1 will be connected to the outside, the internal gas can be released to the outside, the downward sliding distance of the inner tube 2 can be increased, and the reverse impulse of the relative contact plate 6 to the elevator body will be reduced, thereby achieving protection of the elevator body.

[0028] Due to the existence of the isolation layer 13, when the elevator body falls too fast and hits the contact plate 6, causing the internal contact plate 6 to be subjected to a sufficiently large impact, the sliding pin 5 will pierce the isolation layer 13, thereby allowing the internal air to communicate with the outside. Therefore, the inner tube 2 and the outer tube 1 will obtain a larger contraction distance, reducing the impulse received by the elevator body, thereby achieving a buffering effect.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rear-mounted household elevator, comprising an elevator body and a buffer device, characterized in that: The buffer device comprises an outer cylinder (1), an inner cylinder (2) and a trigger assembly; The inner cylinder (2) is sleeved inside the outer cylinder (1), the upper end of the inner cylinder (2) extends upward from the upper cylinder opening of the outer cylinder (1), a first spring (3) is arranged inside the outer cylinder (1), and the upper and lower ends of the first spring (3) respectively abut against the lower end of the inner cylinder (2) and the lower end of the outer cylinder (1); The trigger assembly comprises a support plate (9), a second spring (7), a sliding pin (5), a contact plate (6) and an isolation layer (13); the support plate (9) is horizontally arranged on the upper inner part of the outer tube (1); the support plate (9) is provided with a sliding hole (10) and an air outlet hole (11) communicating the inside and the outside; the sliding pin (5) is vertically slidably fitted in the sliding hole (10); the upper end of the sliding pin (5) extends out of the upper tube opening of the inner tube (2); and the contact plate (6) is fixed to the upper end of the sliding pin (5) above the inner tube (2); the isolation layer (13) is located below the support plate (9); the second spring (7) is sheathed on the sliding pin (5); the upper and lower ends of the second spring (7) respectively abut against the upper surface of the support plate (9) and the lower surface of the contact plate (6); and the isolation layer (13) isolates the inner tube (2) from top to bottom; When the pressure on the contact plate (6) is greater than a set value, the lower end of the sliding pin (5) will slide down and pierce the isolation layer (13); The isolation layer (13) and the support plate (9) are spaced apart from each other, and a limit plate (12) is provided above the isolation layer (13) to control the deformation amount of the isolation layer (13) protruding upwards, and the limit plate (12) prevents the isolation layer (13) from being damaged due to deformation before the contact plate (6) reaches a set value, and a window is provided at the lower end of the limit plate (12) corresponding to the sliding pin (5); A limit platform is provided inwardly at the upper tube opening of the outer tube (1), a piston plate (4) is slidably fitted inside the outer tube (1), the lower end of the inner tube (2) is fixed to the piston plate (4), and the piston plate (4) is provided with a connecting hole connecting the outer tube (1) and the inner tube (2).

2. A rear-mounted home elevator according to claim 1, characterized in that: A slide cylinder (8) is provided on the upper surface of the support plate (9), the lower end of the slide cylinder (8) is butted against the window, the upper end of the slide cylinder (8) is located below the upper tube opening of the inner tube (2), and the slide pin (5) is slidably fitted in the slide cylinder (8).

3. A rear-mounted home elevator according to claim 1, characterized in that: The outer cylinder (1) is located below the ground.

Images