A tube clamp device, a moving mechanism and an emergency evacuation door handrail rod clamping device

Abstract

The present application relates to pipe fixing technology field, especially to a kind of pipe clamp device, movable mechanism and emergency evacuation door handrail rod clamping device, including mounting seat, connecting rod assembly, clamping plate assembly, tightening drive assembly, connecting rod assembly folding realizes stretching and folding, clamping plate assembly is set on mounting seat, clamping plate assembly includes oppositely arranged clamping plate, clamping plate rotates relative to mounting seat, clamping plate has open channel between, connecting rod assembly enters open channel after folding folding, when connecting rod assembly is against tightening drive assembly, tightening drive assembly drives the clamping plate on both sides to contract and clamps at least one rod of connecting rod assembly, the pipe clamp device of the present application is linked with connecting rod assembly, when rod is folded, it can promote pipe clamp device to clamp rod, no additional pipe clamp operation is needed, easy to operate.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting limiting and fixing technology, and in particular to a pipe clamping device, a movable mechanism, and an emergency evacuation door handrail clamping device. Background Technology

[0002] Emergency evacuation doors are often installed at the ends of subway trains. Normally, these doors are locked. In an emergency, the door panels open, and the handrails open along with them, creating an escape route. After the emergency is resolved, the door panels need to be closed, and the handrails retracted and secured. A common method of securing the handrails is to install bent steel plates (such as...) onto the door frame. Figure 1 (as shown) or nylon composite plywood (such as Figure 2 (As shown). The former, due to its fixed opening size, has a larger opening to allow the handrail tubes to move freely in and out, which prevents the handrail clamps from being tightened; the latter can only clamp the two handrail tubes with bolts and is not connected to the door frame. Neither of these methods can properly secure the handrail tubes. The handrail tube assembly is actually only connected to the vehicle body at four hinge points (two on the door leaf and two on the door frame), causing the handrail to sway and make abnormal noises when the vehicle is running. Summary of the Invention

[0003] To address the problems of swaying and rattling after the linkage assembly is retracted in existing technologies, this invention provides a pipe clamp device, a movable mechanism, and an emergency evacuation door handrail clamping device for limiting the position of the linkage.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A pipe clamp device, characterized in that it comprises:

[0006] Mounting base,

[0007] The linkage assembly folds to extend and retract.

[0008] A clamping plate assembly is mounted on a mounting base. The clamping plate assembly includes clamping plates that are disposed opposite each other and can rotate relative to the mounting base. An opening channel is provided between the clamping plates.

[0009] The tightening drive assembly is used to retract the connecting rod assembly after it is folded up and enters the opening channel. When the connecting rod assembly abuts against the tightening drive assembly, the tightening drive assembly drives the clamping plates on both sides to retract and clamp onto at least one member of the connecting rod assembly.

[0010] Furthermore, the mounting base is provided with a groove, and the clamping plate assembly includes a first rotating shaft disposed on the clamping plate, the first rotating shaft being limited in the groove. The clamping plate assembly also includes an elastic component connected between the two clamping plates to realize the reset of the clamping plate.

[0011] Furthermore, the tightening drive assembly includes a pressure head, which is slidably mounted on the mounting base. The pressure head slides along the length of the clamping plate. The pressure head has a contact surface that contacts the clamping plate. The contact point between the contact surface and the clamping plate is located between the first rotating shaft and the elastic component to prevent the clamping plate from dislodging from the groove and failing. The rod pushes the pressure head to move, and the contact surface of the pressure head presses against the root of the clamping plate, causing the clamping plate in contact with the connecting rod assembly to tighten.

[0012] Furthermore, the tightening drive assembly also includes a pressure plate, which contacts the rod, and the pressure head is connected to the pressure plate. Using a pressure plate to contact the rod results in a large contact area and stable operation.

[0013] Furthermore, the pressure head is hinged to the pressure plate. This hinge allows the pressure plate to rotate relative to the pressure head, adapting to changes in the applied force position of the rod, while simultaneously transmitting force to the pressure head and preventing jamming.

[0014] Furthermore, the mounting base is provided with a guide groove, and the two ends of the pressure head are provided with guide heads that slide along the guide groove. There is a surface contact between the guide head and the groove surface of the guide groove, thereby preventing the pressure head from rotating around the guide head. The pressure head end faces at both ends of the pressure head slide with the inner surface of the mounting base to prevent the pressure head from deflecting within the mounting base.

[0015] Furthermore, the entrance of the opening channel is extended outward to facilitate the entry and exit of the rods.

[0016] An active mechanism includes the aforementioned pipe clamp device, comprising a fixed member and a movable member, the fixed member and the movable member being connected by a linkage assembly, and the pipe clamp device being disposed at least on the fixed member.

[0017] Furthermore, the moving part is also equipped with a pipe clamping device, and the opening direction of the pipe clamping device on the moving part is opposite to that of the pipe clamping device on the fixed part. This is equivalent to having pipe clamping devices on both sides of the connecting rod assembly, which improves stability.

[0018] An emergency evacuation door handrail clamping device, employing the aforementioned movable mechanism, is characterized in that: the emergency evacuation door includes a door frame and a door leaf, the door frame being the fixed component, the door leaf being the movable component, the door leaf moving relative to the door frame, and a connecting rod assembly connecting the door frame and the door leaf; when the door leaf is closed, the connecting rod assembly folds up.

[0019] Beneficial effects:

[0020] (1) The pipe clamping device of the present invention is linked with the connecting rod assembly. When the rod is retracted, the pipe clamping device can clamp the rod, without the need for additional pipe clamping operation, which is convenient to operate.

[0021] (2) The clamping device can be achieved by driving the pressure head through the rod and pressing the clamping plate. This can be achieved through a mechanical structure, which is convenient for production and has low cost.

[0022] (3) The handrail tube clamp is fixed to the door frame or door leaf so that the handrail tube assembly is clamped and fixed to the vehicle body when it is retracted, thus solving the problems of handrail tube assembly shaking and collision noise.

[0023] (4) Corresponding pipe clamp devices are provided on both the door frame and the door leaf. The two work together to achieve a pipe clamp effect with good overall performance.

[0024] (5) The handrail tube assembly of the emergency evacuation door can easily and automatically enter and exit the handrail tube clamp as the door is opened and closed, without the need for human operation, thus saving manpower. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a steel plate sandwich panel in the prior art;

[0027] Figure 2 This is a schematic diagram of the structure of a nylon composite splice in the prior art;

[0028] Figure 3 This is a three-dimensional structural diagram of the emergency evacuation door of the present invention;

[0029] Figure 4 This is a side view of the emergency evacuation door of the present invention;

[0030] Figure 5 This is a top view of the door frame pipe clamp device in Embodiment 1;

[0031] Figure 6 This is a top view of the first mounting base in Embodiment 1;

[0032] Figure 7 This is a front view of the first mounting base in Embodiment 1.

[0033] Figure 8 This is a top view of the first clamping plate in Embodiment 1;

[0034] Figure 9 This is a front view structural diagram of the first clamping plate in Embodiment 1;

[0035] Figure 10This is a schematic diagram of the front structure of the first pressure head in Example 1;

[0036] Figure 11 This is a side view of the first pressure head in Example 1;

[0037] Figure 12 This is a schematic diagram of the front structure of the first pressure plate in Example 1;

[0038] Figure 13 This is a schematic diagram of the side structure of the first pressure plate in Example 1;

[0039] Figure 14 This is a top view of the door frame tube clamping device for holding the handrail tube in Example 1.

[0040] Figure 15 This is a front structural diagram of the door frame tube clamping device in Embodiment 1 clamping the handrail tube;

[0041] Figure 16 This is a top view of the door frame tube clamping device and door leaf tube clamping device in Embodiment 2, showing their clamping of the handrail tube.

[0042] Figure 17 This is a front structural diagram of the door frame tube clamping device in Embodiment 2, which clamps the handrail tube.

[0043] Figure 18 This is a top view of the door leaf clamp device in Embodiment 2;

[0044] Figure 19 This is a front structural diagram of the door leaf clamp device in Embodiment 2;

[0045] Figure 20 This is a schematic diagram of the structure of the preset connecting seat in Embodiment 2;

[0046] Figure 21 This is a front view of the second mounting base in Embodiment 2;

[0047] Figure 22 This is a schematic diagram of the left side structure of the second mounting base in Embodiment 2;

[0048] Figure 23 This is a schematic diagram of the right side structure of the second mounting base in Embodiment 2;

[0049] Figure 24 This is a top view of the second clamping plate in Example 2;

[0050] Figure 25 This is a schematic diagram of the front structure of the second clamping plate in Example 2;

[0051] Figure 26 This is a schematic diagram of the front structure of the second pressure head in Example 2;

[0052] Figure 27 This is a side view of the second pressure head in Example 2;

[0053] Figure 28 This is a schematic diagram of the front structure of the second pressure plate in Example 2;

[0054] Figure 29 This is a side view of the second pressure plate in Example 2;

[0055] Figure 30 This is a top view of the door frame tube clamping device and door leaf tube clamping device in Embodiment 3, showing how they clamp the handrail tube.

[0056] Figure 31 This is a front view of the door frame tube clamping device in Embodiment 3 clamping the handrail tube;

[0057] Figure 32 This is a front view of the door leaf tube clamping device in Embodiment 3 clamping the handrail tube.

[0058] 1. Door frame; 11. First mounting base; 111. First guide groove; 112. First recess; 113. First baffle; 12. First clamping plate; 121. First pivot; 122. Root of first clamping plate; 13. First pressure head; 131. First guide head; 132. Side of first pressure head; 133. End face of first pressure head; 14. First pressure plate; 15. First elastic component; 2. Door leaf; 21. Second mounting base; 211. Second guide groove; 212. Second pivot recess; 213. Second baffle. 22. Second clamping plate; 221. Second rotating shaft; 222. Root of second clamping plate; 261. Third rotating shaft; 23. Second pressure head; 231. Second guide head; 232. Side of second pressure head; 233. End face of second pressure head; 24. Second pressure plate; 25. Second elastic component; 26. Preset connecting seat; 262. Groove of first rotating shaft; 01. First pipe fitting; 02. Second pipe fitting; 03. Third pipe fitting; 04. Fourth pipe fitting; 05. Fifth pipe fitting; 06. Sixth pipe fitting; 07. Seventh pipe fitting. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0062] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0065] This invention provides a pipe clamping device, including a mounting base, a connecting rod assembly, a clamping plate assembly, and a tightening drive assembly. The connecting rod assembly is folded to extend and retract. The clamping plate assembly is disposed on the mounting base and includes clamping plates disposed opposite each other. The clamping plates rotate relative to the mounting base and have an opening channel between them. When the connecting rod assembly is folded and retracted, it enters the opening channel. When the connecting rod assembly abuts against the tightening drive assembly, the tightening drive assembly drives the clamping plates on both sides to retract and clamp onto at least one member of the connecting rod assembly.

[0066] The mounting base has a groove, and the clamping plate assembly includes a first rotating shaft disposed on the clamping plate. The first rotating shaft is limited in the groove. The clamping plate assembly also includes an elastic component connected between the two clamping plates to realize the reset of the clamping plate.

[0067] The tightening drive assembly can be an active drive component. For example, a contact switch can be set at the position of the contact rod of the tightening drive assembly, and then a drive mechanism such as a cylinder for clamping the driver can be connected to the clamping plate. However, this method is costly. As a preferred embodiment of the present invention, the tightening drive assembly includes a pressure head, which is slidably disposed on the mounting base. The pressure head slides along the length direction of the clamping plate. The pressure head has a contact surface that contacts the clamping plate. The contact point between the contact surface and the pressure plate is located between the first rotating shaft and the elastic component. The rod pushes the pressure head to move, and the contact surface of the pressure head presses the root of the clamping plate, causing the clamping plate in contact with the connecting rod assembly to tighten.

[0068] The tightening drive assembly also includes a pressure plate that contacts the rod, and a pressure head connected to the pressure plate. The pressure head is hinged to the pressure plate.

[0069] The mounting base is provided with a guide groove, and the two ends of the pressure head are provided with guide heads that slide along the guide groove. There is surface contact between the guide head and the groove surface of the guide groove. The guide head can be selected, but is not limited to, square, polygonal, racetrack-shaped, etc., so as to prevent the pressure head from rotating around the guide head. The pressure head end faces at both ends of the pressure head slide with the inner surface of the mounting base to prevent the pressure head from deflecting within the mounting base.

[0070] The entrance to the opening is extended outwards to facilitate the entry and exit of the rods. Specifically, the ends of the clamps can be bent.

[0071] A movable mechanism includes the aforementioned pipe clamp device, comprising a fixed member and a movable member connected by a linkage assembly. The pipe clamp device is at least disposed on the fixed member. The movable member can be a door, cover, or other mechanism requiring opening and closing actions. Preferably, the movable member is also provided with a pipe clamp device, and the opening direction of the opening channel of the pipe clamp device on the movable member is opposite to that of the opening channel of the pipe clamp device on the fixed member.

[0072] An emergency evacuation door handrail clamping device employs the aforementioned movable mechanism. The emergency evacuation door includes a door frame 1 and a door leaf 2. The door frame 1 is a fixed component, and the door leaf 2 is a movable component. The door leaf 2 moves relative to the door frame 1. A linkage assembly connects the door frame 1 and the door leaf 2. When the door leaf 2 is closed, the linkage assembly folds up. Figure 3 and Figure 4 In this invention, the linkage assembly is a handrail tube assembly, which includes a first tube 01, a second tube 02, a third tube 03, a fourth tube 04, a fifth tube 05, a sixth tube 06, and a seventh tube 07.

[0073] Example 1:

[0074] like Figures 5-15 The door frame 1 is provided with a door frame tube clamp device, which includes a first mounting base 11, a first clamping plate 12, a first pressure head 13, a first pressure plate 14, and a first elastic component 15. Figure 8 The first mounting base 11 is optional, but not limited to, a welded stainless steel plate component. It has four mounting holes on one side for fixing to the door frame 1, and a first guide groove 111 at each end of the other side and a first groove 112 on each side. A first baffle 113 is provided at both ends to limit the movement distance of the first pressure head 13. Figure 8 and Figure 9 The first clamping plate 12 has a first rotating shaft 121 on its right side. Half of the first rotating shaft 121 is pressed into the first groove 112 and rotatably connected thereto. The right end has a first clamping plate root 122. The inner side of the first clamping plate 12 is covered with a thin felt or rubber foam material in contact with the handrail tube. Figure 10 and Figure 11The first pressure head 13 has a hinge hole in its middle, which is hinged to the first pressure plate 14. First guide heads 131 are provided at both ends of the first pressure head, inserted into the first guide groove 111 and slidably connected to it. The side surface 132 of the first pressure head is the contact surface of the pressure head, preferably a smooth arc surface, and is slidably connected to the first clamping plate 12. The end face 133 of the first pressure head is a smooth plane, which is slidably connected to the end wall of the first mounting base 11, restricting the rotation of the first pressure head 13. Figure 12 and Figure 13 The first pressure plate 14 is hinged to the first pressure head 13, and the flat plate receives the handrail tube and transmits pressure vertically to the first pressure head 13. The first elastic component 15 is connected to the root 122 of the first clamping plate, providing opening force to the first clamping plate 12. When the door is closed, the handrail tube assembly retracts. When the first tube 01 located on the outermost side of the assembly presses against the first pressure plate 14, it drives the first pressure head 13 to move inward. The first guide head 131 slides along the first guide groove 111, and its first pressure head side 132 presses against the first clamping plate 12. The first pressure head end face 133 is pressed against the end wall of the first mounting base 11, squeezing the root 122 of the first clamping plate to open to both sides. The first clamping plate 12 rotates along the first rotating shaft 121, and its head tightens accordingly, pressing the handrail tube from both sides. When the door is opened, the handrail tube assembly extends, the first tube 01 leaves the first pressure plate 14, and under the spring force of the first elastic component 15, the root 122 of the first clamping plate tightens, squeezing the first pressure head 13 to move outward, and the head of the first clamping plate 12 opens, allowing the handrail tube to easily leave the handrail tube clamp.

[0075] Example 2:

[0076] like Figures 16-29 The door frame 1 is equipped with a door frame tube clamping device, and the door leaf 2 is equipped with a door leaf tube clamping device. The door frame tube clamping device is the same as that in Embodiment 1, including a first mounting base 11, a first clamping plate 12, a first pressure head 13, a first pressure plate 14, and a first elastic component 15, except that the length of the first clamping plate 12 is shortened, and the number of handrail tubes clamped is reduced. The door leaf tube clamping device includes a second mounting base 21, a second clamping plate 22, a second pressure head 23, a second pressure plate 24, a second elastic component 25, and a preset connecting base 26. Figure 20 It is a pre-set connecting seat 26, with a first rotating shaft groove 262 in the middle and mounting screw holes on both sides for installing a second mounting seat 21. Figures 21-23 The second mounting base 21 has a second rotating shaft groove 212 in the middle of its inner side, and four mounting holes on the outer connecting plates at both ends for fixed connection to the preset connecting base 26. Each of the inner upright plates at both ends has a second guide groove 211, and a second baffle 213 is installed on the second guide groove 211 to limit the movement distance of the second pressure head 23. Figure 24 and Figure 25The second clamping plate 22 has a second rotating shaft 221 and a third rotating shaft 261 respectively on its right side. Each shaft has half of its portion pressed into the second rotating shaft groove 212 and the first rotating shaft groove 262, and is rotatably connected to them. The right end has a second clamping plate root 222. The inner side of the second clamping plate is covered with a thin felt or rubber foam material in contact with the handrail tube. Figure 26 and Figure 27 The second pressure head 23 has a hinge hole in its middle, which is hinged to the second pressure plate 24. Second guide heads 231 are provided at both ends, inserted into the second guide grooves 211, and slidably connected to the second guide grooves 211. The side surface 232 of the second pressure head 23 of the door leaf clamp device is a contact curved surface, preferably a smooth arc surface, which is slidably connected to the left and right pressure plates. The end face 233 of the second pressure head is a smooth flat surface, which is slidably connected to the inner wall of the second mounting base 21 and the preset connecting base 26, restricting the rotation of the second pressure head 23. Figure 28 and Figure 29 The second pressure plate 24 is hinged to the second pressure head 23, and the flat plate receives the handrail tube and transmits pressure vertically to the second pressure head 23. The second elastic component 25 is connected to the root 222 of the second clamping plate, providing opening force for the second clamping plate 22. When the door is closed, the handrail tube assembly retracts. When the outermost seventh tube 07 presses against the second pressure plate 24, it drives the second pressure head 23 to move inward. The second guide head 231 slides along the second guide groove 211, and its second pressure head side 232 presses against the second clamping plate 22. The second pressure head end face 233 is pressed against the inner wall of the second mounting base 21, squeezing the root 222 of the second clamping plate to open to both sides. The second clamping plate 22 rotates along the second rotating shaft 221, and its head tightens accordingly, pressing the handrail tube from both sides. When the door is opened, the handrail tube assembly extends, the seventh tube 07 leaves the second pressure plate 24, and under the action of the spring force, the root 222 of the second clamping plate tightens, squeezing the second pressure head 23 to move outward, and the head of the second clamping plate 22 opens, allowing the handrail tube to easily leave the handrail tube clamp.

[0077] Example 3

[0078] like Figures 30-32 The door frame tube clamping device includes a first mounting base 11, a first clamping plate 12, a first pressure head 13, a first pressure plate 14, and a first elastic component 15. The door leaf tube clamping device includes a second mounting base 21, a second clamping plate 22, a second pressure head 23, a second pressure plate 24, a second elastic component 25, and a preset connecting base 26. The door leaf tube clamping device and the door frame tube clamping device are the same as in Embodiment 2, except that the length of the first clamping plate 12 is shortened, and the number of clamped handrail tubes is reduced by one. Since one end of the fifth handrail tube 05 is hinged to the door leaf, the handrail tube assembly can be stably clamped even without clamping this tube. This shortens the length of the first clamping plate 12, and the opening range of the corresponding clamping plate is also reduced, making it easier to process, reducing the reserved space, and achieving the tube clamping function while saving costs.

[0079] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An emergency exit door handrail clamp device employing a movable mechanism, characterized in that: The emergency evacuation door includes a door frame (1) and a door leaf (2). The moving mechanism includes a fixed part and a moving part. The door frame (1) is the fixed part, and the door leaf (2) is the moving part. The door leaf (2) moves relative to the door frame (1). A linkage assembly is connected between the door frame (1) and the door leaf (2). The linkage assembly folds to extend and retract. When the door leaf (2) is closed, the linkage assembly folds and retracts. It also includes pipe clamping devices, which include: mounting bases, A clamping plate assembly is mounted on a mounting base. The clamping plate assembly includes clamping plates that are disposed opposite each other and can rotate relative to the mounting base. An opening channel is provided between the clamping plates. The tightening drive assembly, after the connecting rod assembly is folded up, enters the opening channel. When the connecting rod assembly abuts against the tightening drive assembly, the tightening drive assembly drives the clamping plates on both sides to retract and clamp onto at least one member of the connecting rod assembly. The tightening drive assembly includes a pressure head that slides along the length direction of the clamping plate. The pressure head has a contact surface that contacts the clamping plate. The member pushes the pressure head to move, and the contact surface of the pressure head presses against the root of the clamping plate, causing the clamping plate in contact with the connecting rod assembly to tighten.

2. The emergency evacuation door handrail clamping device according to claim 1, characterized in that: The mounting base is provided with a groove, and the clamping plate assembly includes a first rotating shaft disposed on the clamping plate. The first rotating shaft is limited in the groove. The clamping plate assembly also includes an elastic component connected between the two clamping plates to realize the reset of the clamping plate.

3. The emergency evacuation door handrail clamping device according to claim 2, characterized in that: The pressure head is slidably mounted on the mounting base, and the contact point between the contact surface and the clamping plate is located between the first rotating shaft and the elastic component.

4. An emergency escape door handrail clamp device according to claim 3, characterised in that: The tightening drive assembly also includes a pressure plate, which contacts the rod, and the pressure head is connected to the pressure plate.

5. An emergency escape door handrail clamp device according to claim 4, characterised in that: The pressure head is hinged to the pressure plate.

6. The emergency evacuation door handrail clamping device according to claim 3, characterized in that: The mounting base is provided with a guide groove, and the two ends of the pressure head are provided with guide heads that slide along the guide groove. There is a surface contact between the guide head and the groove surface of the guide groove, thereby preventing the pressure head from rotating around the guide head. The end faces of the pressure head at both ends of the pressure head slide with the inner surface of the mounting base to prevent the pressure head from deflecting within the mounting base.

7. An emergency escape door handrail clamp device according to claim 3, characterized in that: The opening at the entrance of the passage extends outward to facilitate the entry and exit of the rods.

8. An emergency escape door handrail clamp apparatus as claimed in claim 1, wherein: The fixed component and the movable component are connected by a linkage assembly, and the pipe clamp device is at least provided on the fixed component.

9. An emergency escape door handrail clamp device according to claim 8, characterised in that: The movable part is also provided with the aforementioned pipe clamp device, and the opening direction of the pipe clamp device on the movable part is opposite to that of the opening channel of the pipe clamp device on the fixed part.

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