A car anti-collision mechanism

Abstract

This utility model relates to the technical field of elevator car anti-collision mechanisms and discloses an elevator car anti-collision mechanism. This utility model includes a limiting blocking device, a wedge-shaped lifting device, and a fixing mechanism. The wedge-shaped lifting device includes a reciprocating linear electric cylinder, a translational wedge, a lifting wedge, and a fixing frame. The wedge-shaped lifting device is driven by the electric cylinder to extend and form a barrier inside the elevator car. In this way, the wheels or frame of the vehicle will be blocked and restricted to a designated position, preventing the vehicle from colliding with the inner wall of the car.

Description

Technical Field

[0001] This utility model relates to the technical field of car anti-collision mechanisms, and in particular to a car anti-collision mechanism. Background Technology

[0002] As an indispensable vertical transportation tool in modern buildings, the safety of elevators directly affects the operational safety of passengers and equipment. With the increasing prevalence of high-rise buildings and the growing frequency of elevator use, the issue of collision avoidance within the elevator car has gradually become a key focus of the industry. Collision avoidance technology within the elevator car is of great significance. First, it can effectively reduce structural damage to the car caused by collisions with goods, extending the elevator's lifespan and reducing maintenance costs. Second, optimized collision avoidance systems can enhance the sense of security for passengers and operators, especially in special scenarios such as car elevators and freight elevators, where collision avoidance technology is directly related to the safe transport of vehicles or goods. Finally, with increasingly stringent national safety standards for elevators, innovation in collision avoidance technology has become a crucial element for elevator manufacturers to enhance their product competitiveness.

[0003] Traditional elevator car anti-collision measures mostly use fixed protective panels or wooden veneers, but these solutions have many limitations: First, the protective materials are easily removed during renovations and lose their protective function; second, fixed structures cannot adapt to the dynamic impact requirements of goods of different sizes; third, some anti-collision devices have design flaws (such as gaps between the mounting plate and the bottom of the car), making it difficult to clean up fallen items, thus limiting their practicality. Furthermore, for freight elevators, which are usually accompanied by trolleys entering and exiting the elevator, the car's inner walls may be scraped or accidentally collided with by goods due to the trolley's inertia and the blind spots of the person pushing the trolley. This not only shortens the elevator's lifespan but may also create safety hazards.

[0004] This proposal is put forward in order to improve and optimize the above-mentioned problems or shortcomings. Utility Model Content

[0005] An elevator car anti-collision mechanism includes a limiting blocking device, a wedge-shaped lifting device, and a fixing mechanism. The wedge-shaped lifting device includes a reciprocating linear electric cylinder, a translational wedge, a lifting wedge, and a fixing frame. The wedge-shaped lifting device is driven by the electric cylinder to extend and form a barrier inside the elevator car. In this way, the wheels or frame of a vehicle will be blocked and restricted to a designated position, preventing the vehicle from colliding with the inner wall of the car.

[0006] The advantages and positive effects of this utility model are:

[0007] This mechanism can block and limit the movement of the trolley when it enters the elevator, while the lifting control does not affect the movement of the trolley out of the elevator.

[0008] The mechanism is simple to implement, is installed at the bottom of the car, occupies little space, and will not collide or interfere with the buffer, thus possessing good engineering application value.

[0009] The electric cylinder of this device is horizontally positioned. This arrangement lowers the overall center of gravity and reduces the spatial volume of the mechanism. The overall longitudinal height does not exceed the lower beam of the car frame, avoiding interference and collision with the buffer at the bottom of the car. The lifting device uses a wedge mechanism, with the inclined plane angle μ greater than the self-locking angle θ (θ > arctanμ) to ensure no self-locking during movement. The translation wedge is designed with a separate dovetail groove structure to limit the working displacement of the lifting wedge.

[0010] The electric cylinder vibrates during operation, which affects the overall stability and service life of the mechanism. A wedge-shaped lifting device fixing mechanism is designed, with bolts used to fix the electric cylinder side and the translation wedge side of the wedge-shaped lifting device. The fixing channel steel is connected to the channel steel at the bottom of the car, ensuring structural stability and safety, and facilitating manufacturing and installation. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a structural schematic diagram of the present invention in the car configuration position;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 This is an exploded structural diagram of the present invention;

[0015] Figure 4 This is a schematic diagram of the structure of this utility model;

[0016] Figure 5 yes Figure 4 Schematic diagram of the structure;

[0017] Figure 6 yes Figure 2 A side view of the fixed mechanism device 3. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance. The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0020] like Figure 1-6 As shown, this utility model describes a car anti-collision mechanism.

[0021] See Figure 1 The elevator car overview diagram is as follows: The mechanism is installed at the bottom of the car 0, and the blocking block 11 is controlled to move up and down by the electric cylinder 21.

[0022] See Figure 2 , Figure 3 The overall assembly drawing of the car anti-collision mechanism is as follows: limit blocking device 1, wedge lifting device 2, and fixing mechanism device 3.

[0023] See Figure 4 The wedge-shaped lifting device consists of a reciprocating linear electric cylinder 21, a translational wedge 23, a lifting wedge 22, and a fixed frame 24. The wedge-shaped lifting device 2 converts the linear motion of the electric cylinder 21 into lifting motion, ultimately transmitting the force to the blocking block 11, which in turn blocks the moving trolley inside the car, thus achieving collision protection against the car wall. The translational wedge has a dovetail groove 231 at its head, limiting the displacement of the lifting wedge 22 and ensuring it does not deviate from the inclined plane during movement. The fixed frame 24 provides a moving plane for the translational wedge 23 and has a positioning groove 241 milled on top to ensure the accuracy and smoothness of the lifting wedge 22's vertical movement. The limiting and blocking device 1 consists of a blocking block 11, a support rod 12, and a support frame 13. The support rod 12 transmits the upward force of the lifting wedge 22 to the support frame 13, thereby driving the blocking block 11 to move upward. The support rod 12 has pre-threaded ends and is fixed to the support frame 13 with double nuts 14 to prevent displacement during long-term operation, which could lead to equipment failure and safety hazards. The limit blocking device 1 raises the blocking block 11 after the elevator door opens to restrict the movement of the transport trolley in advance, and automatically lowers after the elevator door closes.

[0024] See Figure 5The fixing mechanism 3 consists of a fixing channel steel 31 and a fixing bracket 32. The upper part of the fixing bracket 32 ​​has a 3mm deep groove 321 for placing the fixing bracket 24 and limiting the displacement of the fixing bracket 24 during the up-and-down movement of the wedge. Holes are left on both sides of the lower part of the fixing bracket 32 ​​to connect to the fixing channel steel 31 and fix the wedge-shaped lifting device 2, ensuring the overall stability of the lifting movement. A hole 311 is drilled in the upper part of the fixing channel steel 31 to connect with the bottom of the car, and a hole is drilled on the rear side of the fixing channel steel 31 to fix the rear electric cylinder 21 using a double-nut screw.

[0025] The lifting device adopts a wedge mechanism, and the inclined plane angle μ is selected to be greater than the self-locking angle θ (θ>arctanμ) to ensure that there is no self-locking during the movement process.

[0026] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A car anti-collision mechanism comprising an elevator car comprising a car floor (0), characterized by: A through groove is provided on the bottom (0) of the car to accommodate anti-collision components, and also includes; The limiting and blocking device (1) has a strip-shaped structure. After it extends out of the through slot reserved at the bottom of the car (0), it forms a blocking structure in the car to block the car from entering the car. The wedge-shaped lifting device (2) includes two components with mutually fitting inclined surfaces and a linear drive source. One of the components with inclined surfaces has only the degree of freedom to move up and down, and the other component with inclined surfaces has only the degree of freedom to move left and right. After being driven by the linear drive source, the components that move up and down are adjusted up and down by pushing through the inclined surfaces. The limiting and blocking device (1) is installed on the upper end of the components that move up and down. The fixing mechanism (3) fixes the non-moving part of the wedge lifting device (2) to the bottom of the elevator car by bolts.

2. A car anti-collision mechanism according to claim 1, characterized in that: The wedge lifting device includes a reciprocating linear electric cylinder (21), a translation wedge (23), a lifting wedge (22), and a fixed frame (24). The translation wedge (23) can only move left and right within the fixed frame (24). The lifting wedge (22) is inserted into the fixed frame (24). The lifting wedge (22) slides up and down relative to the fixed frame (24), and the contact surface between the lower end face of the lifting wedge (22) and the translation wedge (23) is an inclined surface. The left and right movement of the translation wedge (23) drives the lifting wedge (22) to move up and down.

3. A car anti-collision mechanism according to claim 1 or 2, characterized in that: The head of the translation wedge is designed as a dovetail groove (231).

4. A car collision prevention mechanism according to claim 1 or 2, characterized in that: The (24) is provided with a square positioning groove (241), wherein the part of the lifting wedge (22) inserted into the positioning groove (241) is a square shaft that matches it.

5. A car collision prevention mechanism according to claim 1, characterized in that: The limiting blocking device (1) includes a blocking block (11), a support rod (12) and a support frame (13). The support rod (12) is fixed on the upper end of the lifting wedge block (22). The blocking block (11) and the support rod (12) are fixedly connected by a double nut (14) and a fixed support frame (13).

6. A car collision prevention mechanism according to claim 1, characterized in that: The fixing mechanism device (3) includes a fixing channel steel (31) and a fixing bracket (32). The fixing bracket (32) has holes on both sides of its lower part for connecting the fixing channel steel (31) and fixing the wedge-shaped lifting device (2). The fixing channel steel (31) has a hole (311) drilled on its upper part to connect with the bottom of the car. The fixing channel steel (31) has a hole drilled on its rear side to fix the rear electric cylinder (21) using a double nut screw.

7. A car crash prevention mechanism according to claim 1 or 5 or 6, characterized in that: The lifting device employs a wedge mechanism, wherein the inclined plane angle μ is selected to be greater than the self-locking angle θ (θ > arctanμ).

Images