Installation structure of safety door

Abstract

The utility model discloses an installation structure of a safety door, which relates to the technical field of safety doors, and comprises a safety door, a left fence and a right fence which are arranged side by side, and the left side of the safety door is horizontally and detachably hinged to the right side of the left fence and is provided with a pressure spring type switch positioning mechanism which is used for limiting the opening and closing of the safety door. A spring type locking mechanism with a pulling plate is arranged on the right side of the safety door, and the safety door can be limited to the left side of the right side fence through the spring type locking mechanism. According to the safety door, the stability of the closing state of the safety door can be guaranteed, effective control over the opening degree of the safety door is achieved, excessive opening and accidental closing of the safety door are prevented, and therefore the overall practicability is greatly improved while the overall use safety and reliability are greatly improved; in addition, the safety door can be conveniently and rapidly opened, and therefore the overall use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety doors, and in particular to an installation structure of a safety door. Background Art

[0002] At present, in places where aerial work is often required, such as chemical companies and construction sites, workers generally climb onto the work platform through an open straight ladder. In order to reduce the risk of aerial work for workers, this type of aerial work platform is usually equipped with fences around it, and a safety door that matches the fence is installed at the entrance and exit of the straight ladder, that is, between the fences on both sides. Traditional safety doors not only have a cumbersome installation structure with the fence, and are inconvenient to install and disassemble, but are also mostly fully manual safety doors, and the opening and closing operations are extremely cumbersome.

[0003] The related research on safety doors in the prior art, such as the self-closing safety door used in a nuclear power plant in patent application CN217233374U, can be detachably matched with the safety door by installing self-locking components such as automatic closing hinges equipped with torsion springs or hydraulic self-closers, which simplifies the installation structure of the safety door to a certain extent, facilitates the disassembly of the safety door, and realizes the self-closing of the safety door. However, most of the prior art only relies on self-locking components to ensure the closing of the door. In the case that the self-locking components are easily damaged due to long-term use, the overall safety and reliability of use are average. At the same time, most of the prior art cannot ensure the control of the opening of the safety door, nor can it ensure that the safety door can be kept in the open position as needed to prevent the accidental closing of the safety door. The overall practicality is also average. In addition, most of the prior art considers the convenience of closing the safety door, and cannot ensure the quick opening of the safety door. Its convenience of use is lacking.

[0004] Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide an installation structure for a safety door to solve the technical problems that most of the existing technologies proposed in the above background technology only rely on self-locking components to ensure the closing of the door, and the overall safety and reliability of use are average. At the same time, most of the existing technologies cannot ensure the control of the opening of the safety door and prevent the accidental closing of the safety door, and the overall practicality is also average. In addition, most of the existing technologies cannot ensure the quick opening of the safety door and lack the convenience of use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A safety door installation structure comprises a safety door and two fences arranged side by side on the left and right. Two hinges are provided at upper and lower intervals between the safety door and the left fence at a position below a compression spring type switch positioning mechanism. The left side of the safety door is horizontally detachably hinged to the right side of the left fence through a hinge and is provided with a compression spring type switch positioning mechanism for limiting the opening and closing of the safety door. The right side of the safety door is provided with a spring type locking mechanism with a pull plate and can be limited to the left side of the right fence through the spring type locking mechanism.

[0008] Furthermore, the compression spring type switch positioning mechanism includes a vertically arranged column pin and a guide tube I, the middle and lower parts of the column pin are both shaft-shaped, a compression spring is sleeved on the middle part of the column pin and is coaxially penetrated into the interior of the guide tube I together with the compression spring, a column pin flange is formed on the upper part of the column pin to stop the upper part of the compression spring, and the upper end of the column pin half extends out of the guide tube I, and a limit plate is horizontally welded to the top of the right side wall of the fence on the left, and the lower surface of the limit plate cooperates with the safety door Two positioning holes are provided at the opening and closing positions. The upper end of the pin is hemispherical and is respectively engaged with the two positioning holes through a compression spring. The lower end of the guide tube I is welded to a baffle I with a stopper function at the lower part of a pair of compression springs. The baffle I is horizontally welded to the left side wall of the safety door and is provided with a through hole I. The lower part of the pin passes through the baffle I through the through hole I and is threadedly connected to two adjusting nuts that abut against each other at adjacent positions of the baffle I. The spring-type locking mechanism includes a vertically arranged The retaining pin is a semi-frame structure welded on the right side wall of the safety door, and the opening of the semi-frame structure is arranged toward the safety door. The lock tongue is arranged inside a guide tube II and includes a connecting rod and a wedge-shaped tongue body integrally connected to the left side of the connecting rod. The guide tube II is welded on the left side wall of the right fence. The left part of the wedge-shaped tongue body semi-extends out of the guide tube II and is formed with a bayonet matched with the retaining pin. The left part of the wedge-shaped tongue body is engaged with the retaining pin through the bayonet. The right part of the connecting rod extends out of the guide tube II and is then covered with a pull plate. The part of the connecting rod located in the guide tube II is covered with a spring. The right end of the guide tube II is coaxially welded with a baffle II. The left and right end parts of the spring are respectively abutted with the wedge-shaped tongue and the baffle II. The baffle II is provided with a through hole II for the connecting rod to pass through. After the connecting rod passes through the through hole II and passes through the baffle II, two locking nuts are threadedly connected at adjacent positions of the baffle II, and the pull plate abuts between the two locking nuts.

[0009] Furthermore, each of the hinges includes a hinge shaft, a sleeve for the hinge shaft to coaxially pass through, and a connecting plate I and a connecting plate II respectively matched with the hinge shaft and the sleeve, the hinge shaft is vertically arranged and the lower end is welded to the connecting plate I, the connecting plate I is horizontally welded to the right side wall of the left fence, the sleeve is vertically welded to the left side of the connecting plate II, and the connecting plate II is vertically welded to the left side wall of the safety door.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model has a left side of the safety door horizontally detachably hinged to the right side of the left fence, so as to realize the detachable connection between the safety door and the left fence, which is convenient for the installation and disassembly of the safety door. In addition, a spring-type locking mechanism is provided on the right side of the safety door and can be limited to the left side of the right fence by the spring-type locking mechanism, so as to realize the self-locking of the safety door relative to the fence. By coordinating the setting of a compression spring type switch positioning mechanism for limiting the opening and closing of the safety door, the elastic effect of the compression spring type switch positioning mechanism is utilized, so that even if the spring-type locking mechanism of the safety door is damaged due to long-term use or suddenly fails due to other unexpected circumstances, the safety door can still maintain a closed state, and effective control of the opening of the safety door is realized, so as to prevent the safety door from being over-opened and accidentally closed, and finally greatly improve the overall safety and reliability of use, while greatly improving the overall practicality; in addition, the setting of the pull plate with the spring-type locking mechanism of the utility model facilitates the quick opening of the safety door, thereby greatly improving the overall convenience of use.

[0012] 2. The compression spring type switch positioning mechanism in the utility model includes a column pin, a column pin flange, a guide tube I, a compression spring, and a baffle I. In the utility model, a limit plate is horizontally welded to the top of the right side wall of the left fence. The lower surface of the limit plate is provided with two positioning holes to match the opening and closing positions of the safety door. In the utility model, the column pin and the two positioning holes are matched under the action of the guide tube I, the compression spring and the baffle I, which fully ensures the realization of the limit when the safety door is opened and closed. That is, the two positioning holes in the utility model respectively limit the two positions of the safety door when it is closed and fully opened. The positioning holes determine the opening angle of the safety door. When the safety door is closed, the column pin is pressed at the position limited by the compression spring. When the safety door is opened by applying a thrust, the safety door rotates, and the pin leaves the previous positioning hole under the action of the thrust, and reaches the positioning hole that defines the position of the safety door when it is fully opened, and under the action of the elastic force of the compression spring, the pressure is supplemented in the positioning hole, and the safety door stays in this position, and can only be pushed out by applying a thrust again, which further improves the overall safety, reliability and practicality of use; and on this basis, the cooperation setting of two adjusting nuts that abut against each other realizes the tightening of double nuts while facilitating the adjustment of the elastic force of the compression spring, thereby further ensuring the overall safety, reliability and practicality of use.

[0013] 3. The spring-type locking mechanism in the utility model includes a stop pin, a spring, a baffle plate II, a pull plate, a guide tube II, and a lock tongue composed of a connecting rod and a wedge-shaped tongue body. The utility model ensures the realization of quick opening and closing of the safety door on the basis of further ensuring the stability and reliability of the safety door in the closed state through the coordinated arrangement of the lock tongue and the stop pin under the action of the spring, the baffle plate II, the pull plate, and the guide tube II. That is, when the safety door is closed and the stop pin presses onto the inclined surface of the wedge-shaped tongue body, the wedge-shaped tongue body will retract into the guide tube II. Once the stop pin slides over the inclined surface, the wedge-shaped tongue body will automatically pop out from the guide tube II under the elastic force of the spring, engage with the stop pin, lock the safety door, and prevent the safety door from rotating again. Only when the staff pulls the pull plate to retract the wedge-shaped tongue body into the guide tube II again, the stop pin can pop out and the safety door can be opened, thereby playing a safety protection role. This further ensures the overall safety and reliability of use while further improving the overall convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a main schematic diagram of the utility model;

[0015] Figure 2 It is a top view schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the main view of the positioning mechanism of the spring-loaded switch of the utility model;

[0017] Figure 4 It is a top view schematic diagram of the spring-loaded switch positioning mechanism of the utility model;

[0018] Figure 5 This is a schematic diagram of the working principle of the spring-loaded switch positioning mechanism of the utility model;

[0019] Figure 6 The schematic diagram of the working process of the spring-loaded switch positioning mechanism of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 7 The schematic diagram of the working process of the spring-loaded switch positioning mechanism of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 8 This is a structural schematic diagram of the spring-type locking mechanism of the utility model;

[0022] Fig. 9 This is a schematic diagram of the working principle of the spring-type locking mechanism of the utility model;

[0023] Fig.10 The working process of the spring type locking mechanism of the utility model is shown in FIG. Figure 1 ;

[0024] Fig.11 The working process of the spring type locking mechanism of the utility model is shown in FIG. Figure 2 ;

[0025] In the figure: 1, safety door, 2, fence I, 3, fence II, 4, hinge, 41, hinge shaft, 42, bushing, 43, connecting plate I, 44, connecting plate II, 5, pin, 51, pin flange, 6, guide tube I, 7, compression spring, 8, baffle I, 81, through hole I, 9, adjusting nut, 10, limit plate, 101, positioning hole I, 102, positioning hole II, 11, stop pin, 12, lock tongue, 121, connecting rod, 122, wedge-shaped tongue, 123, bayonet, 13, guide tube II, 14, pull plate, 15, baffle II, 151, through hole II, 16, spring, 17, set nut. DETAILED DESCRIPTION

[0026] The following examples are used to further illustrate the content of the utility model, but do not limit the application of the utility model.

[0027] See also Figures 1 to 11, which shows an installation structure of a safety door, including a fence Ⅰ2 and a fence Ⅱ3 arranged side by side on the left and right, a safety door 1 located between the fence Ⅰ2 and the fence Ⅱ3, and two hinges 4 arranged at intervals up and down for hingedly connecting the safety door 1 and the fence Ⅰ2 (in this example, the safety door 1 is set as a rectangular frame structure, and the bottom is not in contact with the ground). Each hinge 4 is composed of a hinge shaft 41, a sleeve 42 for the hinge shaft 41 to pass from bottom to top, a connecting plate Ⅰ43 and a connecting plate Ⅱ44. The connecting plate Ⅰ43 is horizontally welded to the right side wall of the fence Ⅰ2, the hinge shaft 41 is vertically welded to the upper surface of the corresponding connecting plate Ⅰ43, the connecting plate Ⅱ44 is vertically welded to the left side wall of the safety door 1, and the sleeve 42 is vertically welded to the left side of the corresponding connecting plate Ⅱ44.

[0028] Furthermore, a baffle plate Ⅰ8 is horizontally welded to the left side wall of the safety door 1, and a through hole Ⅰ81 is opened on the baffle plate Ⅰ8. A pin 5 vertically passes through the through hole Ⅰ81. A guide tube Ⅰ6 is also vertically welded to the upper surface of the baffle plate Ⅰ8 (in this embodiment, the cross-section of the guide tube Ⅰ6 is circular). The middle and lower parts of the pin 5 are both shaft-shaped. A compression spring 7 is sleeved on the middle part of the pin 5 and is coaxially penetrated through the interior of the guide tube Ⅰ6 together with the compression spring 7. A pin flange 51 is formed on the upper part of the pin 5, and the upper and lower ends of the compression spring 7 are respectively abutted against the pin flange 51 and the baffle plate Ⅰ8. After the lower part of the pin 5 passes through the baffle plate Ⅰ8 through the through hole Ⅰ81, it is threadedly connected to two adjusting screws that abut against each other at adjacent positions of the baffle plate Ⅰ8. Nut 9, the more the previous adjusting nut 9 is screwed, the greater the compression deformation of the compression spring 7 is, and the elastic force is greater. By screwing the next adjusting nut 9, it can be tightened with the previous adjusting nut 9 to prevent loosening during rotation. The upper end of the pin 5 is hemispherical and half extends out of the guide tube Ⅰ6. A limiting plate 10 is horizontally welded to the top of the right side wall of the fence Ⅰ2. The limiting plate 10 is located above the pin 5. A positioning hole Ⅰ101 is provided on the lower surface of the limiting plate 10 corresponding to the position of the pin 5 when the safety door 1 is closed. A positioning hole Ⅱ102 is provided on the lower surface of the limiting plate 10 corresponding to the position of the pin 5 when the safety door 1 is fully opened. The upper end of the pin 5 is respectively engaged with the positioning hole Ⅰ101 and the positioning hole Ⅱ102 through the compression spring 7.

[0029] Furthermore, a stop pin 11 is vertically welded on the right side wall of the safety door 1. The stop pin 11 is a semi-frame structure and the opening of the semi-frame structure is arranged toward the safety door 1. The stop pin 11 is also equipped with a lock tongue 12. The lock tongue 12 is inserted into a guide tube Ⅱ 13 and is formed by a connecting rod 121 and a wedge-shaped tongue body 122 located on the left side of the connecting rod 121 in an integrally coaxial manner (in this embodiment, the cross-section of the guide tube Ⅱ 13 is rectangular). The guide tube Ⅱ 13 is welded to the left side wall of the fence Ⅱ 3. A bayonet 123 is formed on the left portion of the wedge-shaped tongue body 122. The left portion of the wedge-shaped tongue body 122 is semi-extended out of the guide tube Ⅱ 13 and is connected to the fence Ⅱ 3 through the bayonet 123. The frame edge of the stop pin 11 of the semi-frame structure is snap-fitted, and the right end of the guide tube Ⅱ13 is coaxially welded with a baffle Ⅱ15, and a through hole Ⅱ151 is opened on the baffle Ⅱ15. The right part of the connecting rod 121 extends out of the guide tube Ⅱ13 and passes through the baffle Ⅱ15 through the through hole Ⅱ151, and then a pull plate 14 is installed on it. The pull plate 14 abuts between two fixing nuts 17, and the two fixing nuts 17 are threadedly connected to the adjacent positions on the right side of the baffle Ⅱ15 on the connecting rod 121 in sequence. The part of the connecting rod 121 located in the guide tube Ⅱ13 is installed with a spring 16, and the left and right ends of the spring 16 are respectively abutted against the wedge-shaped tongue 122 and the baffle Ⅱ15.

[0030] The working principle and workflow of the utility model are as follows:

[0031] When applying thrust to the safety door 1 to close the safety door 1, when the stop pin 11 hits the inclined surface of the wedge-shaped tongue 122, the wedge-shaped tongue 122 will retract into the guide tube Ⅱ 13. Once the stop pin 11 slides over the inclined surface of the wedge-shaped tongue 122, the wedge-shaped tongue 122 will automatically pop out from the guide tube Ⅱ 13 under the elastic force of the spring 16 and engage with the stop pin 11 to close the safety door 1 and prevent the safety door 1 from rotating again. Only when the staff pulls the pull plate 14 to retract the wedge-shaped tongue 122 into the guide tube Ⅱ 13 again, the stop pin 11 will separate from the lock tongue 12 and the safety door 1 can be opened.

[0032] During the whole process, when the safety door 1 is in the closed state, the pin 5 is pressed into the positioning hole Ⅰ101 of the limit plate 10 under the elastic force of the compression spring 7; when a thrust is applied to the safety door 1 in the closed state, the safety door 1 rotates horizontally around the fence Ⅰ2 through the hinge 4, so that the pin 5 also leaves the positioning hole Ⅰ101 and reaches the positioning hole Ⅱ102, and is pressed into the positioning hole Ⅱ102 of the limit plate 10 under the elastic force of the compression spring 7, and the safety door 1 also stays in this position and can only be pushed out unless a thrust is applied again.

Claims

1. A safety door installation structure, comprising a safety door and two fences arranged side by side, characterized in that: The left side of the safety door is horizontally detachably hinged to the right side of the left fence and is provided with a compression spring switch positioning mechanism for limiting the opening and closing of the safety door. The right side of the safety door is provided with a spring-type locking mechanism with a pull plate and can be limited to the left side of the right fence by the spring-type locking mechanism. The spring-type locking mechanism includes a vertically arranged stop pin and a horizontally arranged lock tongue. The stop pin is welded to the right side wall of the safety door. The lock tongue is passed through the interior of a guide tube II and includes a connecting rod and a wedge-shaped tongue body integrally connected to the left side of the connecting rod. The guide tube II is welded to the left side wall of the right fence. The left part of the wedge-shaped tongue body half extends out of the guide tube II and is engaged with the stop pin. The right part of the connecting rod extends out of the guide tube II and is covered with a pull plate. The part of the connecting rod located in the guide tube II is covered with a spring. The right end of the guide tube II is coaxially welded with a baffle II, and the left and right end ends of the spring are respectively in contact with the wedge-shaped tongue body and the baffle II.

2. The installation structure of a safety door according to claim 1, characterized in that: Two hinges are provided at intervals above and below the position between the safety door and the left fence below the compression spring type switch positioning mechanism. Each hinge includes a hinge shaft, a sleeve for the hinge shaft to pass coaxially, and a connecting plate I and a connecting plate II respectively matched with the hinge shaft and the sleeve.

3. A safety door installation structure according to claim 2, characterized in that: The hinge shaft is vertically arranged and the lower end is welded to the connecting plate I, the connecting plate I is horizontally welded to the right side wall of the left fence, the sleeve is vertically welded to the left side of the connecting plate II, and the connecting plate II is vertically welded to the left side wall of the safety door.

4. The installation structure of a safety door according to claim 1, characterized in that: The compression spring type switch positioning mechanism includes a vertically arranged pin and a guide tube I. The middle and lower parts of the pin are both shaft-shaped. A compression spring is sleeved on the middle part of the pin and is coaxially penetrated through the interior of the guide tube I together with the compression spring. A pin flange is formed on the upper part of the pin to stop the upper part of the compression spring. The upper end of the pin half extends out of the guide tube I. The lower end of the guide tube I is welded to a pair of baffles I that stop the lower part of the compression spring. The baffle I is horizontally arranged. After the lower part of the pin passes through the baffle I, two adjusting nuts that abut against each other are threadedly connected at adjacent positions of the baffle I.

5. The installation structure of a safety door according to claim 4, characterized in that: The baffle plate I is provided with a through hole I for the pin to pass through.

6. The installation structure of a safety door according to claim 4, characterized in that: The baffle plate I is welded to the left side wall of the safety door, and a limit plate is horizontally welded to the top of the right side wall of the left fence. The lower surface of the limit plate is provided with two positioning holes to match the opening and closing positions of the safety door. The upper end of the pin is hemispherical and is respectively engaged with the two positioning holes through a compression spring.

7. The installation structure of a safety door according to claim 1, characterized in that: After the connecting rod passes through the baffle plate II, two fixing nuts are threadedly connected at adjacent positions of the baffle plate II, and the pull plate abuts between the two fixing nuts.

8. The installation structure of a safety door according to claim 7, characterized in that: The baffle plate II is provided with a through hole II for the connecting rod to pass through.

9. The installation structure of a safety door according to claim 1, characterized in that: A bayonet adapted to the stop pin is formed on the left portion of the wedge-shaped tongue body, and the stop pin is a semi-frame structure with an opening of the semi-frame structure arranged toward the safety door.

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