A fixed hook for evacuation platform

Abstract

The utility model discloses a kind of fixed lifting hooks for evacuation platform plate, including fixed base and platform plate, the platform plate is set in the upper end surface of fixed base, the lower end surface of platform plate is equipped with pin at fixed base, the axis direction of pin is parallel with the axis direction of fixed base, pin is adapted with several lifting hooks, one end of several lifting hooks is adapted with pin and is engaged, other end is connected steel lining plate, the upper end surface of steel lining plate and the lower end surface of fixed base abut. The utility model platform plate and fixed base are fixedly connected by lifting hook and steel lining plate between it, its connection mode is simple, only need to be removed from lifting hook when disassembling, it is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of subway equipment technology, and in particular to a fixed hook for evacuation platform panels. Background Technology

[0002] Composite material evacuation platform panels are widely used in evacuation passages of underground projects such as subways and tunnels, offering advantages such as light weight, high strength, and corrosion resistance. Currently, the traditional installation method for evacuation platform panels involves directly fixing them to the base with bolts. While bolt fixing prevents platform panel displacement, this traditional method is inefficient, and after prolonged use, the bolt connections can deform under stress, making disassembly between the platform panel and the base difficult and hindering future maintenance. Utility Model Content

[0003] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0004] A fixing hook for an evacuation platform includes a fixed base and a platform. The platform is disposed on the upper end face of the fixed base, and a pin is provided on the lower end face of the platform corresponding to the fixed base. The axis of the pin is parallel to the axis of the fixed base. The pin is fitted with a plurality of hooks, one end of which is fitted and engaged with the pin, and the other end is connected to a steel liner. The upper end face of the steel liner abuts against the lower end face of the fixed base.

[0005] Furthermore, the lower end face of the platform plate is provided with several grooves, and the pin passes through the grooves in sequence.

[0006] Furthermore, one end of the hook that is fitted with the pin is located in the groove, and the side of that end abuts against the side wall of the groove.

[0007] Furthermore, one end of the hook that connects to the steel liner is provided with an external thread, and this end passes through the steel liner and is threadedly connected with a lock nut.

[0008] Furthermore, a gap is left between the upper end of the pin and the bottom of the groove, and this gap is greater than the sum of the radius of the pin and the radius of the hook.

[0009] The beneficial effects of this utility model are:

[0010] 1. Compared to direct bolt connection, the platform plate and the fixed base are fixedly connected by hooks and steel lining plates. The connection method is simple, and disassembly can be done by simply removing the lock nut from the hook, which is convenient and quick.

[0011] 2. The threaded connection between the pin and the threaded hole prevents the pin from moving left or right. The threaded connection of the pin to the nut prevents the pin from rotating axially, thus ensuring the stability of the pin.

[0012] 3. By tightening the lock nut, a preload is applied to the steel liner plate, which presses the steel liner plate tightly, allowing the hook to firmly hold the pin bar and ensuring the stability of the platform plate. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of the invention.

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a top sectional view;

[0016] Figure 2 for Figure 1 AA view;

[0017] Figure 3 for Figure 2 BB view;

[0018] Figure 4 This is a structural schematic diagram of the steel liner plate;

[0019] In the picture

[0020] 1. Fixed base; 2. Platform plate; 3. Pin; 4. Hook; 5. Steel lining plate; 6. Groove; 7. Locking nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0023] refer to Figures 1-4 As shown, one embodiment of this utility model is as follows:

[0024] A fixing hook for an evacuation platform includes a fixing base 1 and a platform 2. The platform 2 is disposed on the upper end face of the fixing base 1. A pin 3 is provided on the lower end face of the platform 2 corresponding to the fixing base 1. The axis of the pin 3 is parallel to the axis of the fixing base 1. The pin 3 is fitted with a plurality of hooks 4. One end of each hook 4 is fitted and engaged with the pin 3, and the other end is connected to a steel liner 5. The upper end face of the steel liner 5 abuts against the lower end face of the fixing base 1.

[0025] In this utility model, the fixed base 1 is long and narrow. One end of the fixed base 1 is fixedly connected to the tunnel wall by anchor bolts, and the other end extends outward to place the platform plate 2. The platform plate 2 is placed on the upper surface of the fixed base 1 at that end.

[0026] The fixed base 1 has an I-shaped cross-section, consisting of upper and lower flanges and a central web. The I-shaped cross-section allows it to concentrate most of the stress on the flanges when subjected to bending loads. According to the bending stress formula σ=My / I (where σ is the bending stress, M is the bending moment, y is the distance from the point to the neutral axis, and I is the moment of inertia of the section), the flanges are far from the neutral axis, so they can withstand the large tensile and compressive stresses generated by bending, ensuring the safety of the platform plate 2.

[0027] In this invention, the pin 3 is a solid cylindrical shape to ensure that it has sufficient strength to withstand radial tensile force. The pin 3 can be installed on the lower end face of the platform plate 2 by welding, threaded connection, or interference fit. In this invention, threaded connection is preferred for installation on the platform plate 2. Figure 3As shown, the pin 3 has external threads at both ends. The left end of the lower surface of the platform plate 2 has a through hole with a diameter slightly larger than that of the pin 3, and the right end of the lower surface of the platform plate 2 has a threaded hole adapted to the pin 3. When installing the pin 3, one end of the pin 3 is passed through the through hole from left to right along the platform plate 2 and threaded into the threaded hole. The other end of the pin 3 extends out of the platform plate 2 and is threaded with a nut at that end. The threaded connection between the pin 3 and the threaded hole prevents the pin 3 from moving left or right, and the threaded connection of the nut to the pin 3 prevents axial rotation of the pin 3, ensuring its stability. Furthermore, the threaded connection of the pin 3 facilitates disassembly and replacement.

[0028] In this invention, the hook 4 includes an upper hook portion and a lower connecting portion. The hook portion is semi-circular, and the connecting portion is straight. The bending radius of the hook portion is slightly larger than the radius of the pin 3, allowing the hook portion to fit and engage with the pin 3. The connecting portion is used to connect the steel liner plate 5, thereby fixing the hook 4. Specifically, the connecting portion has external threads, the steel liner plate 5 is a rectangular plate, and there are round holes at the four corners of the steel liner plate 5 that fit the connecting portion. The connecting portion passes through the round holes and is threaded with a locking nut 7. The locking nut 7 provides preload to the steel liner plate 5, pressing it tightly, thereby allowing the hook 4 to firmly hold the pin 3 and ensure the stability of the platform plate 2.

[0029] In this utility model, in order to ensure that the hook 4 can be easily hung on the pin 3, the lower end face of the platform plate 2 shown is provided with a groove 6, the pin 3 is set in the groove 6, and there is a gap between the upper end of the pin 3 and the bottom of the groove 6. This gap is greater than the sum of the radius of the pin 3 and the radius of the hook 4. That is to say, the hook part of the hook 4 can move back and forth in this gap, which facilitates the installation of the hook 4.

[0030] In this invention, in order to ensure that the pin 3 is subjected to uniform force, the groove 6 is provided with at least five grooves and is evenly arranged. The pin 3 passes through the five grooves 6 in sequence, and there are six contact surfaces between the pin 3 and the five grooves 6. When the pin 3 is subjected to force, there are six support points for the force, so that the pin 3 is subjected to uniform force, avoiding problems such as bending and breakage caused by uneven force on the pin 3, and improving the service life of the pin 3.

[0031] In this utility model, such as Figure 3 As shown, the side of the hook 4 abuts against the side wall of the groove 6, which can play a limiting role and prevent the hook 4 from sliding left and right.

[0032] In this utility model, such as Figure 2As shown, the fixed base 1 is set at the junction of the two platform plates 2. The left platform plate 2 and the right platform plate 2 share a steel liner 5 and the fixed base 1. That is, the two platform plates 2 are connected to the fixed base 1 by a steel liner 5, and the two ends of the platform plate 2 are placed on the two fixed bases 1 respectively, which not only enhances the overall stability, but also takes into account the convenience of maintenance.

[0033] The following points need to be explained:

[0034] (1) Unless otherwise defined, the same reference numerals in the embodiments and drawings of this disclosure have the same meaning.

[0035] (2) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0036] (3) For clarity, components or areas are enlarged in the drawings used to describe embodiments of the present disclosure. It will be understood that when an element is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element, or there may be an intermediate element.

[0037] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A fixing hook for an evacuation platform, characterized in that: The system includes a fixed base (1) and a platform plate (2). The platform plate (2) is located on the upper surface of the fixed base (1). The lower surface of the platform plate (2) is provided with a pin (3) corresponding to the fixed base (1). The axial direction of the pin (3) is parallel to the axial direction of the fixed base (1). The pin (3) is fitted with a plurality of hooks (4). One end of each hook (4) is fitted and engaged with the pin (3), and the other end is connected to a steel liner plate (5). The upper surface of the steel liner plate (5) abuts against the lower surface of the fixed base (1).

2. A fixing hook for an evacuation platform as described in claim 1, characterized in that: The lower end face of the platform plate (2) is provided with a plurality of grooves (6), and the pin (3) passes through the grooves (6) in sequence.

3. A fixing hook for an evacuation platform as described in claim 2, characterized in that: The end of the hook (4) that is adapted to engage with the pin (3) is located in the groove (6), and the side of the end abuts against the side wall of the groove (6).

4. A fixing hook for an evacuation platform as described in claim 3, characterized in that: The hook (4) is connected to the steel liner (5) at one end with an external thread, and this end passes through the steel liner (5) and is threaded with a lock nut (7).

5. A fixing hook for an evacuation platform as described in claim 3, characterized in that: There is a gap between the upper end of the pin (3) and the bottom of the groove (6), which is greater than the sum of the radius of the pin (3) and the radius of the hook (4).

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