Buffer protection device for elevator maintenance

Abstract

The utility model discloses a buffer protection device for elevator maintenance, which comprises an elevator car and a protection box, limiting grooves are arranged on four sides of the inner wall of the protection box, a limiting block is arranged at the bottom end of the elevator car, a support spring and a buffer pad are arranged in the protection box, and a damping piece is arranged on the support spring. A plurality of connectors are formed in the top of the buffer pad and penetrate through the bottom, a buffer assembly is arranged at the bottom of the inner wall of the protection box, a cavity is formed between the inner wall and the outer wall of the buffer pad, an air bag is arranged in the cavity, and the two ends of the bottom of the supporting rod are rotationally installed on the two sliding rods respectively. According to the utility model, the buffer assembly, the buffer pad, the cavity and the air bag are arranged, the support spring is combined with the buffer assembly to form a main buffer structure, and the buffer assembly can still buffer most impact force when the support spring cannot buffer in time, so that the buffer protection effect of equipment can be further improved; and the structure can further improve the buffering durability of the equipment buffering cushion.

Description

Technical Field

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

[0002] An elevator is a permanent transport device that serves specific floors within a building, with its car running on at least two rows of rigid tracks perpendicular to the horizontal plane or inclined at an angle of less than 15° to the vertical. Elevator maintenance often requires the use of buffer devices, which are critical for passenger safety. These devices are typically installed at the bottom of an elevator to prevent the elevator car from impacting the ground in extreme situations (such as descent at excessive speed).

[0003] The prior art has the following deficiencies: the prior art application number 201822018863.8 states that “a buffer protection device for elevator maintenance” “comprises an elevator car, an elevator car frame, and a buffer protection device body, wherein the buffer protection device body is arranged at the inner bottom of the elevator car frame, and the elevator car frame is arranged in the elevator car frame through the buffer support of the buffer protection device body, and the buffer protection device body includes a buffer groove, a plurality of vertical support springs are fixed to the inner groove bottom of the buffer groove, and a buffer pad is laid on the inner groove bottom of the buffer groove”;

[0004] The above-mentioned equipment can provide good buffering protection for the elevator car by setting buffer grooves, vertical support springs, buffer pads, etc., thereby improving the comfort of elevator riding. However, the above-mentioned equipment mainly uses support springs for buffering, and the buffer pads only provide secondary buffering for the remaining force after the support springs buffer. The buffering structure is relatively simple. If the support springs cannot buffer most of the impact force in time, the buffering effect of relying solely on the buffer pads is poor. The buffering protection effect of the equipment can be further improved. The buffer pads of the above-mentioned equipment mainly rely on their own elasticity for secondary buffering. As the material of the buffer pads themselves ages, the elasticity will gradually decrease, thereby affecting the buffering effect of the buffer pads. The buffering durability of the equipment buffer pads can be further improved. Utility Model Content

[0005] The purpose of the present utility model is to provide a buffer protection device for elevator maintenance to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a buffer protection device for elevator maintenance, comprising an elevator car and a protection box, wherein limit grooves are provided on all four sides of the inner wall of the protection box, a limit block is provided at the bottom end of the elevator car, a support spring and a buffer pad are provided in the protection box, a damping member is provided on the support spring, a plurality of connection ports are provided on the top of the buffer pad and pass through the bottom, a buffer assembly is provided at the bottom of the inner wall of the protection box, a cavity is provided between the inner wall and the outer wall of the buffer pad, and an airbag is provided in the cavity;

[0007] The buffer assembly includes a first slide groove, a second slide groove, a pulley, a slide rod and a support rod. The first slide groove is opened at the bottom of the inner wall of the protection box, and second slide grooves are opened on both sides of the inner wall of the first slide groove. A pulley is arranged in the first slide groove, a slide rod is arranged at one end of the pulley, and a support rod is arranged on the pulley.

[0008] As an optimal technical solution of the present invention, limit blocks are fixedly installed on the four sides of the bottom end of the elevator car, the four groups of limit grooves are respectively adapted to the four groups of limit blocks, and the four groups of limit blocks are respectively slidably installed in the four groups of limit grooves.

[0009] As a preferred technical solution of the present invention, the bottom of the buffer pad is fixedly installed on the bottom of the inner wall of the protection box and the specific material of the buffer pad is soft silicone, and damping parts are fixedly installed at both ends of the support spring.

[0010] As an optimal technical solution of the present invention, there are several groups of support springs and the number is consistent with the connecting ports. The connecting ports are adapted to the support springs. The damping members at the bottom ends of several groups of support springs are fixedly installed on the bottom of the inner wall of the protection box. The top ends of several groups of support springs pass through the corresponding connecting ports and the damping members at the top ends of the support springs are fixedly installed on the bottom of the elevator car.

[0011] As a preferred technical solution of the present invention, the cavity is opened to avoid the positions of several groups of connecting ports, and several groups of airbags are fixedly installed in the cavity and the airbags are elliptical.

[0012] As an optimal technical solution of the present invention, slide rods are fixedly installed at both ends of the pulley, the bottom end of the support rod is provided with an opening adapted to the pulley, and the bottom ends of the support rod are rotatably installed on two sets of slide rods respectively.

[0013] As a preferred technical solution of the present invention, the first slide groove is adapted to the pulley, and the two groups of the second slide grooves are adapted to the two groups of sliding rods respectively. The pulley is slidably installed in the first slide groove and the two groups of sliding rods are slidably installed in the two groups of second slide grooves respectively. Two groups of support rods are symmetrically arranged in the first slide groove and the top ends of the two groups of support rods are rotatably installed at the bottom of the elevator car. There are four groups of first slide grooves in total and the structures on the four groups of first slide grooves are the same.

[0014] Compared with the prior art, the present invention provides a buffer protection device for elevator maintenance, which has the following beneficial effects:

[0015] 1. This buffer protection device for elevator maintenance is provided with a buffer assembly. When the elevator car descends at an excessive speed and impacts the ground, the support spring combined with the damping member can play a good buffering protection effect. At the same time, the elevator car exerts an impact force downward on the support rod, and the slide rod moves slowly along the second slide groove, thereby pushing the pulley to slide slowly toward the two ends of the first slide groove, thereby effectively buffering the impact force of the elevator car descending. The buffer pad can further buffer the remaining small impact force after the support spring and the buffer assembly buffer most of the impact force. This structure uses the support spring combined with the buffer assembly as the main buffer structure. When the support spring cannot buffer in time, the buffer assembly can still buffer most of the impact force, thereby further improving the buffering protection effect of the equipment.

[0016] 2. This buffering protection device for elevator maintenance is equipped with a buffer pad, a cavity, and an airbag. Since the airbag itself has a good buffering effect and is made of a soft material, it can provide elastic support for the buffer pad. After the buffer pad's own material ages, the airbag combined with the cavity can still enable the buffer pad to maintain its original buffering effect as a whole, which can further improve the buffering durability of the equipment buffer pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the protection box of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the elevator car of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the protection box after the support spring and buffer pad are removed;

[0021] Figure 5 This is a schematic diagram of the support rod structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the buffer pad of the present utility model.

[0023] In the figure: 1. Elevator car; 2. Protection box; 3. Limit groove; 4. Limit block; 5. Support spring; 6. Damping member; 7. Buffer pad; 8. Connecting port; 9. Buffer assembly; 901. First slide groove; 902. Second slide groove; 903. Pulley; 904. Slide rod; 905. Support rod; 10. Cavity; 11. Airbag. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-6 In this embodiment: a buffer protection device for elevator maintenance includes an elevator car 1 and a protection box 2. Limit grooves 3 are provided on all four sides of the inner wall of the protection box 2. A limit block 4 is provided at the bottom end of the elevator car 1. A support spring 5 and a buffer pad 7 are provided in the protection box 2. The buffer pad 7 itself has a certain elastic buffering effect. A damping member 6 is provided on the support spring 5. Several groups of connecting ports 8 are provided on the top of the buffer pad 7 and pass through the bottom. A buffer component 9 is provided at the bottom of the inner wall of the protection box 2. A cavity 10 is provided between the inner wall and the outer wall of the buffer pad 7. The cavity 10 can facilitate the installation of an airbag 11. The airbag 11 is provided in the cavity 10.

[0026] The buffer assembly 9 includes a first slide groove 901, a second slide groove 902, a pulley 903, a slide rod 904 and a support rod 905. The bottom of the inner wall of the protection box 2 is provided with a first slide groove 901, and the first slide groove 901 can facilitate the sliding of the pulley 903. Second slide grooves 902 are provided on both sides of the inner wall of the first slide groove 901. A pulley 903 is arranged in the first slide groove 901, and a slide rod 904 is arranged at one end of the pulley 903. The slide rod 904 can facilitate the connection between the support rod 905 and the pulley 903, and a support rod 905 is arranged on the pulley 903.

[0027] In this embodiment, the four sides of the bottom end of the elevator car 1 are fixedly installed with limit blocks 4, the four groups of limit grooves 3 are respectively adapted to the four groups of limit blocks 4, and the four groups of limit blocks 4 are respectively slidably installed in the four groups of limit grooves 3;

[0028] Specifically, the limiting block 4 in combination with the limiting groove 3 can prevent the elevator car 1 and the protection box 2 from separating;

[0029] In this embodiment, the bottom of the buffer pad 7 is fixedly mounted on the bottom of the inner wall of the protection box 2 and the specific material of the buffer pad 7 is soft silicone. The two ends of the support spring 5 are fixedly mounted with damping members 6;

[0030] Specifically, the support spring 5 combined with the damping element 6 can provide a good buffering and protective effect;

[0031] In this embodiment, there are several groups of support springs 5 ​​and the number is the same as the number of connection ports 8. The connection ports 8 are adapted to the support springs 5. The damping members 6 at the bottom ends of the several groups of support springs 5 ​​are fixedly mounted on the bottom of the inner wall of the protection box 2. The top ends of the several groups of support springs 5 ​​pass through the corresponding connection ports 8 and the damping members 6 at the top ends of the support springs 5 ​​are fixedly mounted on the bottom of the elevator car 1.

[0032] Specifically, the connection port 8 can prevent the installation of the support spring 5 from affecting the use of the buffer pad 7;

[0033] In this embodiment, the cavity 10 is opened to avoid the positions of the plurality of connection ports 8. A plurality of airbags 11 are fixedly installed in the cavity 10 and the airbags 11 are elliptical in shape.

[0034] Specifically, the airbag 11 can improve the overall elastic durability of the cushion 7;

[0035] In this embodiment, slide bars 904 are fixedly mounted on both ends of the pulley 903, and an opening adapted to fit the pulley 903 is provided at the bottom end of the support bar 905. The bottom ends of the support bar 905 are rotatably mounted on two sets of slide bars 904 respectively.

[0036] Specifically, the support rod 905 can provide support for the elevator car 1;

[0037] In this embodiment, the first chute 901 is adapted to the pulley 903, the two sets of second chute 902 are respectively adapted to the two sets of slide bars 904, the pulley 903 is slidably mounted in the first chute 901, and the two sets of slide bars 904 are respectively slidably mounted in the two sets of second chute 902, two sets of support rods 905 are symmetrically arranged in the first chute 901, and the top ends of the two sets of support rods 905 are rotatably mounted on the bottom of the elevator car 1. There are four sets of first chute 901, and the structures of the four sets of first chute 901 are the same;

[0038] Specifically, the second sliding groove 902 can facilitate the sliding installation of the sliding rod 904 .

[0039] The working principle and use process of the present invention are as follows: the operator first checks whether the relevant components are installed in the correct position. When the elevator car 1 falls at an overspeed and hits the ground, the support spring 5 combined with the damping member 6 can play a good buffering and protective effect. At the same time, the elevator car 1 exerts an impact force downward on each group of support rods 905. Since the end face of the slide bar 904 is a horizontal end face, there will be a large friction force when the end face of the slide bar 904 contacts the bottom of the second slide groove 902, so that the slide bar 904 will not slide too quickly. The slide bars 904 corresponding to the two groups of support rods 905 in each group of the first slide groove 901 will slide along the second slide groove 90 2 moves slowly, thereby pushing the corresponding pulley 903 to slide (move) slowly toward the two ends of the first slide groove 901, thereby better buffering the impact force of the elevator car 1 descending. The buffer pad 7 can further buffer the small part of the impact force remaining after the support spring 5 and the buffer component 9 buffer most of the impact force, thereby playing a good buffering and protective role for the elevator car 1. This structure uses the support spring 5 combined with the buffer component 9 as the main buffering structure. When the support spring 5 cannot buffer in time, the buffer component 9 can still buffer most of the impact force, thereby further improving the buffering and protective effect of the equipment;

[0040] Moreover, the material of the buffer pad 7 itself has a certain buffering effect. Since the airbag 11 itself has a good buffering effect and the material is relatively soft, it can provide elastic support for the buffer pad 7. After the material of the buffer pad 7 itself ages, the airbag 11 combined with the cavity 10 can still enable the buffer pad 7 as a whole to maintain its original buffering effect, which can further improve the buffering durability of the equipment buffer pad 7.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A buffer protection device for elevator maintenance, comprising an elevator car (1) and a protection box (2), wherein the inner wall of the protection box (2) is provided with limit grooves (3) on all four sides, a limit block (4) is provided at the bottom end of the elevator car (1), a support spring (5) and a buffer pad (7) are provided in the protection box (2), a damping member (6) is provided on the support spring (5), and a plurality of connection ports (8) are provided on the top of the buffer pad (7) and pass through the bottom, characterized in that: A buffer assembly (9) is provided at the bottom of the inner wall of the protection box (2); a cavity (10) is provided between the inner wall and the outer wall of the buffer pad (7); and an air bag (11) is provided in the cavity (10); The buffer assembly (9) includes a first slide groove (901), a second slide groove (902), a pulley (903), a slide rod (904) and a support rod (905). The bottom of the inner wall of the protection box (2) is provided with a first slide groove (901), and second slide grooves (902) are provided on both sides of the inner wall of the first slide groove (901). A pulley (903) is provided in the first slide groove (901), a slide rod (904) is provided at one end of the pulley (903), and a support rod (905) is provided on the pulley (903).

2. The buffer protection device for elevator maintenance according to claim 1, characterized in that: Limit blocks (4) are fixedly installed on the four sides of the bottom end of the elevator car (1), the four groups of limit slots (3) are respectively matched with the four groups of limit blocks (4), and the four groups of limit blocks (4) are respectively slidably installed in the four groups of limit slots (3).

3. The buffer protection device for elevator maintenance according to claim 1, characterized in that: The bottom of the buffer pad (7) is fixedly mounted on the bottom of the inner wall of the protection box (2) and the specific material of the buffer pad (7) is soft silica gel. Damping parts (6) are fixedly mounted on both ends of the support spring (5).

4. The buffer protection device for elevator maintenance according to claim 1, characterized in that: There are several groups of the support springs (5) and the number is the same as the number of the connecting ports (8). The connecting ports (8) are adapted to the support springs (5). The damping members (6) at the bottom ends of the several groups of the support springs (5) are fixedly mounted on the bottom of the inner wall of the protection box (2). The top ends of the several groups of the support springs (5) pass through the corresponding connecting ports (8), and the damping members (6) at the top ends of the support springs (5) are fixedly mounted on the bottom of the elevator car (1).

5. The buffer protection device for elevator maintenance according to claim 1, characterized in that: The cavity (10) is opened to avoid the positions of several groups of connection ports (8), and several groups of air bags (11) are fixedly installed in the cavity (10), and the air bags (11) are elliptical.

6. The buffer protection device for elevator maintenance according to claim 1, characterized in that: Both ends of the pulley (903) are fixedly mounted with slide bars (904), the bottom end of the support bar (905) is provided with an opening adapted to the pulley (903), and the bottom ends of the support bar (905) are rotatably mounted on two sets of slide bars (904) respectively.

7. The buffer protection device for elevator maintenance according to claim 1, characterized in that: The first chute (901) is adapted to the pulley (903), and the two groups of the second chute (902) are adapted to the two groups of slide bars (904) respectively. The pulley (903) is slidably installed in the first chute (901) and the two groups of slide bars (904) are slidably installed in the two groups of second chute (902) respectively. Two groups of support rods (905) are symmetrically arranged in the first chute (901) and the top ends of the two groups of support rods (905) are rotatably installed at the bottom of the elevator car (1). There are four groups of the first chute (901) in total and the structures on the four groups of the first chute (901) are the same.

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