Safety buffer device for elevator shaft

By designing a safety buffer device with fixed components and an inflatable protective sleeve in the elevator shaft, the corrosion problem of the buffer device in a humid environment is solved, the life of the spring is extended, and the buffering efficiency is improved.

CN224185650UActive Publication Date: 2026-05-01CHENGDU JINYE TIANCHENG INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU JINYE TIANCHENG INTELLIGENT TECH CO LTD
Filing Date
2025-06-17
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing elevator shaft safety buffer devices are prone to electrochemical corrosion because the hydraulic rods and springs are exposed to the dark and humid environment at the bottom of the shaft. This leads to a decrease in spring stiffness, a shortened elastic fatigue life, and affects buffer performance and working efficiency.

Method used

A safety buffer device including a fixing component and a protective component is designed. The fixing component is used to install the buffer rod body to the bottom of the wellbore and fix it. The protective component wraps the buffer rod body with an inflatable protective sleeve to prevent it from directly contacting the humid environment.

Benefits of technology

It effectively protects the buffer device from moisture, extends the service life of the spring, and improves the buffering performance and working efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a safety buffer device for an elevator shaft, which belongs to the technical field of elevator shaft protection equipment, and is characterized by comprising a shaft buffer rod body, a protection mechanism is arranged on the outer side of the shaft buffer rod body, and the protection mechanism comprises a fixing assembly and a protection assembly. The fixing assembly is arranged at the bottom of the hoistway buffer rod body, the protection assembly is arranged on the outer side of the hoistway buffer rod body, and by arranging the fixing assembly and the protection assembly, the fixing assembly can be installed at the bottom of an elevator shaft, so that the fixing assembly can receive and fix the hoistway buffer rod body and the protection assembly; the shaft buffer rod body can work at a proper position conveniently, meanwhile, the protection assembly can wrap the shaft buffer rod body, and due to the fact that the protection assembly is of an inflatable structure, if an elevator falls to the surface of the shaft buffer rod body to make contact with the surface of the shaft buffer rod body, the protection assembly cannot affect the buffering work of the shaft buffer rod body.
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Description

A safety buffer device for elevator shafts Technical Field

[0001] This utility model relates to the technical field of elevator shaft protection equipment, and in particular to a safety buffer device for elevator shafts. Background Technology

[0002] The elevator shaft safety buffer device is a key safety component installed at the bottom of the shaft. When the elevator falls at excessive speed due to loss of control, it absorbs the kinetic energy of the car and reduces the impact to protect the safety of passengers and equipment.

[0003] Existing elevator shaft safety buffer devices are generally installed at the bottom of the shaft to protect the elevator. However, because the hydraulic rods and springs are exposed to the outside, and the bottom of the shaft is dark and damp, the safety buffer device is prone to electrochemical corrosion. This leads to a decrease in spring stiffness and a shortened elastic fatigue life, which directly affects the buffer's buffering performance and reduces its working efficiency, making it unsuitable for users.

[0004] Therefore, a safety buffer device for elevator shafts is proposed. Summary of the Invention

[0005] The purpose of this utility model is to provide a safety buffer device for elevator shafts, which aims to solve the problem that existing elevator shaft safety buffer devices are generally installed at the bottom of the shaft to protect the elevator. However, because the hydraulic rods and springs are exposed to the outside, and the bottom of the shaft is dark and damp, the safety buffer device is prone to electrochemical corrosion, which leads to a decrease in spring stiffness and a shortened elastic fatigue life. This directly affects the buffer performance of the buffer and reduces its working efficiency, thus making it unsuitable for users.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety buffer device for elevator shafts, comprising a shaft buffer rod body, wherein a protective mechanism is provided on the outer side of the shaft buffer rod body, the protective mechanism comprising a fixing component and a protective component, wherein the fixing component is provided at the bottom of the shaft buffer rod body, and the protective component is provided on the outer side of the shaft buffer rod body;

[0007] The fixing assembly includes a fixing bracket, a supporting base plate, a protective shell, and a storage ring. The fixing bracket is located at the bottom of the shaft buffer rod body, the supporting base plate is bolted to the top of the fixing bracket, the protective shell is bolted to the top of the supporting base plate, and the storage ring is fixedly connected to the top of the protective shell.

[0008] Preferably, the protective assembly includes a fixed ring plate movably connected to the inner side of the storage ring, the top of the inner side of the fixed ring plate having an annular groove, a pressure plate being inserted into the top of the fixed ring plate, and the bottom of the pressure plate being threadedly connected to the top of the storage ring.

[0009] Preferably, an inflatable protective sleeve is fixedly connected to the top of the inner side of the fixed ring plate, an inflation channel is connected to the top of the right side of the inflatable protective sleeve, and a sealing gasket is movably connected to the bottom of the lower pressure plate.

[0010] Preferably, the inner side of the lower pressure plate is provided with a threaded hole, and the inner side of the sealing gasket is provided with a through hole.

[0011] Preferably, the top of the wellbore buffer rod body is provided with an auxiliary component, the auxiliary component including a protective ball movably connected to the right side of the inflatable protective sleeve, the inner side of the protective ball having a storage cavity, and the top of the protective ball being threadedly connected to a clamping block.

[0012] Preferably, a protective pad is adhered to the surface of the clamping block, and the surface of the protective pad is provided with anti-slip texture.

[0013] Preferably, the inner side of the fixed bracket is provided with a threaded fixing channel, and the supporting base plate is in the shape of a disc.

[0014] Preferably, the bottom of the inner side of the protective shell is bolted to the bottom of the wellbore buffer rod body, and the inner side of the storage ring is provided with a circular channel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting a fixing component, when using the safety buffer device for elevator shafts, the user can install the fixing component at the bottom of the elevator shaft so that it can receive and fix the shaft buffer rod body and the protective component, so that the shaft buffer rod body is in a suitable position for operation.

[0017] 2. By setting up a protective component, when using the safety buffer device for elevator shafts, the user can combine the protective component with the fixing component so that the protective component can wrap the shaft buffer rod body inside. At the same time, since it is an inflatable structure, if the elevator falls and comes into contact with the surface of the shaft buffer rod body, the protective component will not affect the buffering work of the shaft buffer rod body. Attached Figure Description

[0018] Figure 1 is an overall structural diagram of a safety buffer device for elevator shafts according to this utility model;

[0019] Figure 2 is a schematic diagram of the protective mechanism in this utility model;

[0020] Figure 3 is a schematic diagram of the protective component in this utility model;

[0021] Figure 4 is a schematic diagram of the protective component in this utility model;

[0022] Figure 5 is a schematic diagram of the auxiliary components in this utility model.

[0023] In the diagram, 1. Hoistway buffer rod body; 2. Protective mechanism; 201. Fixing component; 201a. Fixing bracket; 201b. Support base plate; 201c. Protective shell; 201d. Storage ring; 202. Protective component; 202a. Fixing ring plate; 202b. Lower pressure plate; 202c. Inflatable protective sleeve; 202d. Sealing gasket; 3. Auxiliary component; 301. Protective ball; 302. Clamping block; 303. Protective pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to Figures 1-5. A safety buffer device for elevator shafts includes a shaft buffer rod body 1. A protective mechanism 2 is provided on the outside of the shaft buffer rod body 1. The protective mechanism 2 includes a fixing component 201 and a protective component 202. The fixing component 201 is provided at the bottom of the shaft buffer rod body 1, and the protective component 202 is provided on the outside of the shaft buffer rod body 1.

[0026] The fixing component 201 includes a fixing bracket 201a, a supporting base plate 201b, a protective shell 201c, and a storage ring 201d. The fixing bracket 201a is located at the bottom of the shaft buffer rod body 1, the supporting base plate 201b is bolted to the top of the fixing bracket 201a, the protective shell 201c is bolted to the top of the supporting base plate 201b, and the storage ring 201d is fixedly connected to the top of the protective shell 201c.

[0027] In this embodiment: by setting a fixed bracket 201a, a supporting base plate 201b, a protective shell 201c, and a storage ring 201d, when using this safety buffer device for elevator shafts, the user can combine and install the fixed bracket 201a and the supporting base plate 201b at the bottom of the elevator shaft. At this time, the supporting base plate 201b can receive the shaft buffer rod body 1, and the user can put the protective shell 201c on the top of the shaft buffer rod body 1. After the bottom of the protective shell 201c contacts the bottom of the shaft buffer rod body 1, it can be fixed with bolts, so that the protective shell 201c and the storage ring 201d are outside the shaft buffer rod body 1 for protection.

[0028] Specifically, as shown in Figures 2 and 4, the protective component 202 includes a fixed ring plate 202a movably connected to the inner side of the storage ring 201d. The top of the inner side of the fixed ring plate 202a has a circular groove. A lower pressure plate 202b is inserted into the top of the fixed ring plate 202a. The bottom of the lower pressure plate 202b is threadedly connected to the top of the storage ring 201d.

[0029] Specifically, as shown in Figures 2 and 4, an inflatable protective sleeve 202c is fixedly connected to the top of the inner side of the fixed ring plate 202a, and an inflation channel is connected to the top of the right side of the inflatable protective sleeve 202c. A sealing gasket 202d is movably connected to the bottom of the lower pressure plate 202b.

[0030] Specifically, as shown in Figures 2 and 4, the inner side of the lower pressure plate 202b is provided with threaded holes, and the inner side of the sealing gasket 202d is provided with through holes.

[0031] In this embodiment: by setting a fixed ring plate 202a, a lower pressure plate 202b, an inflatable protective sleeve 202c, and a sealing gasket 202d, when protecting the exposed top structure of the shaft buffer rod body 1, the user can place the fixed ring plate 202a inside the storage ring 201d. At this time, the fixed ring plate 202a can cover the inflatable protective sleeve 202c on the top of the shaft buffer rod body 1. Then, the user can install the lower pressure plate 202b on the top of the storage ring 201d, so that the lower pressure plate 202b can reinforce the fixed ring plate 202a. At the same time, a sealing gasket 202d is set between the lower pressure plate 202b and the fixed ring plate 202a to prevent the lower pressure plate 202b from damaging the surface of the fixed ring plate 202a. Thus, the inflatable protective sleeve 202c can wrap and protect the exposed top structure of the shaft buffer rod body 1, such as springs and hydraulic rods, and prevent them from being directly affected by the dark and humid environment at the bottom of the elevator shaft.

[0032] Specifically, as shown in Figures 1 and 5, an auxiliary component 3 is provided on the top of the wellbore buffer rod body 1. The auxiliary component 3 includes a protective ball 301 movably connected to the right side of the inflatable protective sleeve 202c. A storage cavity is opened on the inner side of the protective ball 301, and a clamping block 302 is threadedly connected to the top of the protective ball 301.

[0033] Specifically, as shown in Figures 1 and 5, a protective pad 303 is adhered to the surface of the clamping block 302, and the surface of the protective pad 303 is provided with anti-slip texture.

[0034] In this embodiment: by setting up a protective ball 301, a clamping block 302 and a protective pad 303, the protective ball 301, the clamping block 302 and the protective pad 303 cooperate with each other to protect the inflatable structure of the inflatable protective sleeve 202c. At the same time, liquid can be stored inside the protective ball 301 to test whether the inflatable protective sleeve 202c has any air leakage.

[0035] Specifically, as shown in Figure 3, the inner side of the fixed bracket 201a is provided with a threaded fixing channel, and the supporting base plate 201b is in the shape of a disc.

[0036] Specifically, as shown in Figure 3, the bottom of the inner side of the protective shell 201c is bolted to the bottom of the wellbore buffer rod body 1, and a circular channel is opened on the inner side of the storage ring 201d.

[0037] In this embodiment: by setting a fixed bracket 201a, a supporting base plate 201b, a protective shell 201c, and a receiving ring 201d, the fixed bracket 201a, the supporting base plate 201b, the protective shell 201c, and the receiving ring 201d cooperate with each other to receive and fix the wellhead buffer rod body 1 and the protective component 202.

[0038] Working principle: First, when protecting the shaft buffer rod body 1, the user can assemble and install the fixed bracket 201a and the support base plate 201b at the bottom of the elevator shaft. The support base plate 201b can then receive the shaft buffer rod body 1. Simultaneously, the user can slip the protective outer shell 201c over the top of the shaft buffer rod body 1. After the bottom of the protective outer shell 201c contacts the bottom of the shaft buffer rod body 1, it can be fixed with bolts, ensuring that the protective outer shell 201c and the storage ring 201d are positioned outside the shaft buffer rod body 1 for protection. When protecting the exposed top structure of the shaft buffer rod body 1, the user can... The ring plate 202a is placed inside the storage ring 201d. At this time, the fixed ring plate 202a can put the inflatable protective sleeve 202c on the top of the shaft buffer rod body 1. Then, the user can install the lower pressure plate 202b on the top of the storage ring 201d, so that the lower pressure plate 202b can reinforce the fixed ring plate 202a. At the same time, a sealing gasket 202d is set between the lower pressure plate 202b and the fixed ring plate 202a to prevent the lower pressure plate 202b from damaging the surface of the fixed ring plate 202a. Thus, the inflatable protective sleeve 202c can wrap around the exposed structure at the top of the shaft buffer rod body 1, such as springs and hydraulic rods, to prevent them from being directly affected by the dark and humid environment at the bottom of the elevator shaft.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the scope of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety buffer device for elevator shafts, comprising a shaft buffer rod body (1), characterized in that: A protective mechanism (2) is provided on the outside of the shaft buffer rod body (1). The protective mechanism (2) includes a fixing component (201) and a protective component (202). The fixing component (201) is located at the bottom of the shaft buffer rod body (1), and the protective component (202) is located on the outside of the shaft buffer rod body (1). The fixing component (201) includes a fixing bracket (201a), a supporting base plate (201b), a protective shell (201c), and a storage ring (201d). The fixing bracket (201a) is located at the bottom of the shaft buffer rod body (1), the supporting base plate (201b) is bolted to the top of the fixing bracket (201a), the protective shell (201c) is bolted to the top of the supporting base plate (201b), and the storage ring (201d) is fixedly connected to the top of the protective shell (201c).

2. A safety buffer device for elevator shafts according to claim 1, characterized in that: The protective assembly (202) includes a fixed ring plate (202a) movably connected to the inside of the storage ring (201d). The top of the inner side of the fixed ring plate (202a) is provided with a circular groove. A lower pressure plate (202b) is inserted into the top of the fixed ring plate (202a). The bottom of the lower pressure plate (202b) is threadedly connected to the top of the storage ring (201d).

3. A safety buffer device for elevator shafts according to claim 2, characterized in that: An inflatable protective sleeve (202c) is fixedly connected to the top of the inner side of the fixed ring plate (202a), and an inflation channel is connected to the top of the right side of the inflatable protective sleeve (202c). A sealing gasket (202d) is movably connected to the bottom of the lower pressure plate (202b).

4. A safety buffer device for elevator shafts according to claim 3, characterized in that: The inner side of the lower pressure plate (202b) is provided with a threaded hole, and the inner side of the sealing gasket (202d) is provided with a through hole.

5. A safety buffer device for elevator shafts according to claim 3, characterized in that: The top of the wellbore buffer rod body (1) is provided with an auxiliary component (3). The auxiliary component (3) includes a protective ball (301) movably connected to the right side of the inflatable protective sleeve (202c). The inner side of the protective ball (301) is provided with a storage cavity. The top of the protective ball (301) is threadedly connected with a clamping block (302).

6. A safety buffer device for elevator shafts according to claim 5, characterized in that: The surface of the clamping block (302) is bonded with a protective pad (303), and the surface of the protective pad (303) is provided with anti-slip texture.

7. A safety buffer device for elevator shafts according to claim 1, characterized in that: The inner side of the fixed bracket (201a) is provided with a threaded fixing channel, and the supporting base plate (201b) is in the shape of a disc.

8. A safety buffer device for elevator shafts according to claim 1, characterized in that: The bottom of the inner side of the protective shell (201c) is bolted to the bottom of the wellbore buffer rod body (1), and the inner side of the storage ring (201d) is provided with a circular channel.