Elevator foundation pit multi-stage buffer structure

Abstract

The utility model discloses an elevator foundation pit multistage buffer structure which comprises a bottom plate (2) arranged at the upper end of a foundation pit through expansion screws (1), rubber shock pads (3) are arranged on the two sides of the upper end of the bottom plate (2), a buffer beam (4) is arranged on the upper sides of the rubber shock pads (3), a through hole (5) is formed in the middle of the buffer beam (4), and a hydraulic buffer structure is arranged in the through hole (5). The hydraulic buffer structure comprises a guide sleeve (6) arranged in the middle of the upper end of the bottom plate (2), a mounting seat (7) capable of vertically moving along the guide sleeve (6) is arranged in the guide sleeve (6), a hydraulic buffer (8) located on the upper side of the buffer beam (4) is arranged at the upper end of the mounting seat (7), and a connecting seat (9) with the area larger than that of the through hole (5) is arranged on the outer side of the lower end of the hydraulic buffer (8). The buffering device has a good buffering effect, and the ground is prevented from being seriously damaged.

Description

Technical Field

[0001] This utility model relates to an elevator pit buffer structure, and more particularly to a multi-stage elevator pit buffer structure. Background Technology

[0002] Elevator pit buffer devices are a key component of elevator safety systems, primarily used to protect equipment and personnel by absorbing and dissipating energy when the elevator falls uncontrollably or when the counterweight impacts the pit. Existing elevator pit buffer devices are generally hydraulic or spring buffers installed in the pit. These buffers connect to a top plate located under the car or counterweight to absorb energy, thus buffering the elevator. However, during use, the buffers are in direct contact with the ground, causing significant damage to the floor. Utility Model Content

[0003] The purpose of this invention is to provide a multi-stage buffer structure for elevator pits. It has a good buffering effect and avoids severe damage to the ground.

[0004] The technical solution of this utility model is as follows: A multi-stage buffer structure for elevator pits includes a base plate installed at the upper end of the pit by expansion bolts. Rubber shock-absorbing pads are provided on both sides of the upper end of the base plate. A buffer beam is provided on the upper side of the rubber shock-absorbing pads. A through hole is provided in the middle of the buffer beam. A hydraulic buffer structure is provided in the through hole. The hydraulic buffer structure includes a guide sleeve provided in the middle of the upper end of the base plate. A mounting seat that can move vertically along the guide sleeve is provided in the guide sleeve. A hydraulic buffer is provided on the upper end of the mounting seat and located on the upper side of the buffer beam. A connecting seat with an area and shape larger than the through hole is provided on the outer side of the lower end of the hydraulic buffer.

[0005] In the aforementioned multi-stage buffer structure for elevator pits, the height of the guide sleeve is less than the inner distance between the buffer beam and the bottom plate, and a limiting groove is provided inside the guide sleeve.

[0006] In the aforementioned multi-stage buffer structure for elevator pits, the mounting base includes a connecting plate fixedly connected to the hydraulic buffer. The lower edge of the connecting plate is provided with a stepped groove, and the middle of the lower side of the connecting plate is provided with a connecting block. A limiting block corresponding to the limiting groove is provided outside the connecting block.

[0007] In the aforementioned multi-stage buffer structure for elevator pits, the connecting seat has a cavity corresponding to the mounting seat, and the upper end of the connecting seat has a protrusion corresponding to the stepped groove.

[0008] In the aforementioned multi-stage buffer structure for elevator pits, the buffer beam is a channel steel with an opening facing downwards.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] This application forms a multi-stage damping structure by combining rubber damping pads, buffer beams, and hydraulic buffers. The guide sleeve can guide the mounting base of the hydraulic buffer, preventing the hydraulic buffer from tilting or shifting when the buffer beam deforms, thus ensuring high reliability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model without the hydraulic buffer structure installed.

[0013] The markings in the attached diagram are as follows: 1-expansion bolt, 2-base plate, 3-rubber shock absorber pad, 4-buffer beam, 5-through hole, 6-guide sleeve, 7-mounting seat, 8-hydraulic buffer, 9-connecting seat, 10-limiting groove, 11-protrusion, 7.1-connecting plate, 7.2-stepped groove, 7.3-connecting block, 7.4-limiting block. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0015] Example. A multi-stage buffer structure for elevator pits, comprising the following... Figure 1-2 As shown, the base plate 2 is mounted on the upper end of the pit by expansion bolts 1. Rubber shock-absorbing pads 3 are provided on both sides of the upper end of the base plate 2. A buffer beam 4 is provided on the upper side of the rubber shock-absorbing pads 3. A through hole 5 is provided in the middle of the buffer beam 4. A hydraulic buffer structure is provided in the through hole 5. The hydraulic buffer structure includes a guide sleeve 6 located in the middle of the upper end of the base plate 2. A mounting seat 7 that can move vertically along the guide sleeve 6 is provided in the guide sleeve 6. A hydraulic buffer 8 located on the upper side of the buffer beam 4 is provided on the upper end of the mounting seat 7. A connecting seat 9 with an area and shape larger than the through hole 5 is provided on the outer side of the lower end of the hydraulic buffer 8.

[0016] The height of the guide sleeve 6 is less than the inner distance between the buffer beam 4 and the bottom plate 2, and the guide sleeve 6 is provided with a limiting groove 10.

[0017] The mounting base 7 includes a connecting plate 7.1 fixedly connected to the hydraulic buffer 8. The lower edge of the connecting plate 7.1 is provided with a stepped groove 7.2. The middle of the lower side of the connecting plate 7.1 is provided with a connecting block 7.3. The connecting block 7.3 is provided with a limiting block 7.4 corresponding to the limiting groove 10.

[0018] The connecting seat 9 has a cavity corresponding to the mounting seat 7, and the upper end of the connecting seat 9 has a protrusion 11 corresponding to the stepped groove 7.2.

[0019] The buffer beam 4 is a channel steel with an opening facing downwards.

[0020] The principle of this utility model: In use, the base plate 2 is fixed to the shaft floor using expansion screws 1. Rubber shock-absorbing pads 3 are then installed on the upper sides of both ends of the base plate 2, and a buffer beam 4 is installed on the upper side of the rubber shock-absorbing pads 3. A hydraulic buffer structure is installed in the middle of the buffer beam 4, and the position of the hydraulic buffer structure corresponds to the position of the impact plate on the lower side of the car or counterweight. The buffer beam 4 can deform to a certain extent, absorbing a certain amount of impact. Thus, the rubber shock-absorbing pads 3, the buffer beam 4, and the hydraulic buffer structure constitute a multi-stage buffer. However, because the buffer beam 4 will deform to a certain extent, it will affect the cooperation with the hydraulic buffer. If the hydraulic buffer is directly mounted on the surface of the buffer beam 4, there is a possibility that the hydraulic buffer may shift when impacted, resulting in poor reliability. This application provides a through hole 5 in the middle of the buffer beam 4 for installing the hydraulic buffer structure. A guide sleeve 6 is fixed to the upper middle part of the base plate, and the height of the guide sleeve 6 is less than the distance from the base plate 2 to the buffer beam 4, meaning that the upper end face of the guide sleeve 6 does not contact the buffer beam 4, thus avoiding the buffer beam 4 deforming under impact and directly exerting large pressure on the guide sleeve 6. A connecting plate 7.1 is provided on the lower side of the hydraulic buffer 8, and a connecting block 7.3 is provided in the middle of the lower end of the connecting plate 7.1. The connecting block 7.3 cooperates with the guide sleeve 6 to guide the hydraulic buffer 8. When subjected to impact, the hydraulic buffer 8 first absorbs part of the impact. At this time, the hydraulic buffer will exert pressure on the buffer beam 4 through the connecting seat 9, causing the buffer beam 4 to deform and continue to absorb the impact. Rubber shock-absorbing pads 3 are provided on the lower sides of both ends of the buffer beam 4, which can further absorb the impact, thus forming a multi-stage buffer structure. Furthermore, the guide sleeve 6, through cooperation with the connecting block 7.3, guides the hydraulic buffer 8, preventing the hydraulic buffer 8 from deviating during its downward movement, thus ensuring high reliability.

Claims

1. An elevator pit multi-stage buffer structure, characterized by, The utility model discloses a base plate (2) is arranged on the upper end of foundation pit through expansion screw (1), and the both sides of the upper end of base plate (2) are equipped with rubber shock pad (3), and the upper side of rubber shock pad (3) is equipped with buffer beam (4), and the middle part of buffer beam (4) is equipped with through -hole (5), and the through -hole (5) is equipped with hydraulic buffer structure, and the utility model discloses a base plate (2) is arranged on the upper end of foundation pit through expansion screw (1), and the both sides of the upper end of base plate (2) are equipped with rubber shock pad (3), and the upper side of rubber shock pad (3) is equipped with buffer beam (4), and the middle part of buffer beam (4) is equipped with through -hole (5), and the through -hole (5) is equipped with hydraulic buffer structure, and the hydraulic buffer structure includes the guide sleeve (6) of being arranged on the upper end of base plate (2) middle part, and the guide sleeve (6) is equipped with the mounting seat (7) of being movable vertically along guide sleeve (6) in, and the upper end of mounting seat (7) is equipped with the hydraulic buffer (8) of being located buffer beam (4) upper side, and the lower end outside of hydraulic buffer (8) is equipped with the connecting seat (9) of the area shape greater than through -hole (5).

2. The multi-stage buffer structure of an elevator foundation pit according to claim 1, characterized in that: The height of the guide sleeve (6) is less than the distance between the inner side of the buffer beam (4) and the base plate (2), and the guide sleeve (6) is provided with a limiting groove (10) inside.

3. The multi-stage buffer structure of an elevator foundation pit according to claim 1, characterized in that: The mounting seat (7) includes a connecting plate (7.1) fixedly connected with the hydraulic buffer (8), a stepped groove (7.2) is arranged on the lower side edge of the connecting plate (7.1), a connecting block (7.3) is arranged on the lower side middle part of the connecting plate (7.1), and a limiting block (7.4) corresponding to the limiting groove (10) is arranged outside the connecting block (7.3).

4. The multi-stage buffer structure of an elevator foundation pit according to claim 1, characterized in that: The connecting seat (9) is provided with a cavity corresponding to the mounting seat (7) inside, and a convex strip (11) corresponding to the stepped groove (7.2) is arranged on the upper end of the connecting seat (9).

5. The multi-stage buffer structure of an elevator foundation pit according to claim 1, characterized in that: The buffer beam (4) is a groove steel with an opening downward.

Images