A clamping mechanism for a building window wind pressure detection device

Abstract

The utility model provides a kind of clamping mechanism for building window wind pressure detection equipment, including mounting plate frame and two side clamping devices;Two side clamping devices are symmetrically arranged on the left and right sides of mounting plate frame, and the bottom of side clamping device is used to clamp the window to be measured;Side clamping device includes side positioning assembly, linkage type clamping mechanism, multiple electric push rods, multiple push plates and multiple buffer assemblies, multiple electric push rods are arranged below mounting plate frame, the fixed end of electric push rod is connected with the lower end surface of mounting plate frame, the output end of electric push rod is connected with push plate, and the lower end surface of each push plate is correspondingly provided with a buffer assembly, and the bottom of buffer assembly is connected with side positioning assembly.The clamping mechanism for building window wind pressure detection equipment of the utility model solves the problem of insufficient local locking force during multi-point clamping of the clamping mechanism in related technology, which can easily cause micro-displacement or stress concentration deformation of the test piece.

Description

Technical Field

[0001] This utility model belongs to the field of building window testing technology, and in particular relates to a clamping mechanism for a building window wind pressure testing device. Background Technology

[0002] The wind pressure testing equipment for building windows is mainly used to evaluate the deformation resistance, air tightness, and water tightness of doors and windows under wind loads to ensure they meet safety standards. The testing equipment simulates static or dynamic wind pressure environments through a pressure chamber, air supply device, water spray system, and measuring unit. During testing, a pressure difference of ±5000Pa or more is applied to the specimen, and data such as deformation and air permeation are collected in real time.

[0003] The clamping mechanism is the core component for fixing door and window test specimens. It adjusts the clamping distance using screws or limiting devices to ensure the edges of the door and window fit tightly against the installation frame, preventing air leakage or displacement during testing. However, in related technologies, the clamping mechanism often suffers from insufficient localized locking force when clamping at multiple points, which can easily lead to micro-displacement or stress concentration deformation of the specimen. Utility Model Content

[0004] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A clamping mechanism for a wind pressure testing device for building windows includes a mounting frame and two side clamping devices;

[0007] The two side clamping devices are symmetrically arranged on the left and right sides of the mounting plate frame, and the bottom of the side clamping devices is used to clamp the window to be tested.

[0008] The side clamping device includes a side positioning component, a linkage clamping mechanism, multiple electric push rods, multiple push plates, and multiple buffer components. The multiple electric push rods are arranged below the mounting plate frame. The fixed end of the electric push rod is connected to the lower end face of the mounting plate frame, and the output end of the electric push rod is connected to the push plate. Each push plate has a corresponding buffer component on its lower end face. The bottom of the buffer component is connected to the side positioning component.

[0009] The linkage end of the linkage clamping mechanism is fixedly connected to the plurality of push plates, and the clamping end of the linkage clamping mechanism is disposed on the side positioning component.

[0010] Furthermore, the linkage clamping mechanism includes a linkage plate, multiple linkage structures, and multiple clamping plate structures. The linkage plate is fixedly connected to multiple push plates. The multiple linkage structures are arranged below the linkage plate. The top of the linkage structure is hinged to the linkage plate, and the bottom of the linkage structure is hinged to the clamping plate structure. One side of the clamping plate structure is hinged to a side positioning component, and the other end of the clamping plate structure is used to clamp the side of the window to be tested.

[0011] Furthermore, the linkage structure includes a connecting rod, a first hinge seat, and a second hinge seat. The top of the connecting rod is connected to the linkage plate through the first hinge seat, and the bottom of the connecting rod is connected to the clamping plate structure through the second hinge seat.

[0012] Furthermore, the clamping structure includes a fixed plate, an elastic fixing component, and a fixed clamping plate. One end of the fixed plate is connected to the side positioning component via a third hinge seat, and the other end of the fixed plate is connected to the fixed clamping plate via the elastic fixing component. The second hinge seat is disposed on the upper end surface of the fixed plate, and the contact surface between the fixed clamping plate and the window to be tested is provided with a polyurethane pad.

[0013] Furthermore, the elastic fixing component includes a locking bolt and a disc spring. The locking bolt passes through the fixing plate, and the bottom of the locking bolt is fixedly connected to the fixing clamp. The disc spring is disposed between the fixing plate and the fixing clamp.

[0014] Furthermore, the buffer assembly includes a telescopic rod and a buffer spring. The top of the telescopic rod is connected to the push plate, the bottom of the telescopic rod is connected to the side positioning assembly, and the buffer spring is sleeved on the outside of the telescopic rod.

[0015] Furthermore, the mounting plate frame includes two mounting plates and two fixed horizontal plates. The two mounting plates are arranged side by side, and the two fixed horizontal plates are symmetrically arranged between the two mounting plates. The first and second ends of each fixed horizontal plate are fixedly connected to one of the mounting plates, and the lower end face of the mounting plate is hinged to the fixed end of the electric push rod.

[0016] Furthermore, the side positioning assembly includes a pressure plate and a sealing gasket, the sealing gasket being disposed on the lower end face of the pressure plate, and the upper end face of the pressure plate being connected to the telescopic end of the telescopic rod.

[0017] Compared with existing technologies, the clamping mechanism for a building window wind pressure testing device described in this utility model has the following advantages:

[0018] 1. The linkage clamping mechanism integrates the dispersed electric push rod driving force into a unified clamping motion through the coordinated action of a rigid linkage plate and multiple sets of hinged connecting rods. This ensures that all clamping points are synchronously displaced and the force is balanced, completely eliminating window frame distortion or local stress concentration caused by differences in force applied at a single point. During the clamping process, the clamping plate angle is adaptively adjusted so that the polyurethane gasket is always perpendicularly pressed against the side edge of the window frame. Even if there are slight unevenness in the window frame or installation tilt deviation, it can still maintain a full edge line contact and sealing state, greatly improving clamping stability and sealing reliability.

[0019] 2. The buffer assembly uses a composite structure of telescopic rod guide combined with sleeve spring. While transmitting clamping force, it actively absorbs the impact of electric push rod start-stop and high-frequency vibration energy during wind pressure testing, avoiding rigid impact that could cause window frame glass breakage or instantaneous detachment of the sealing interface. Its spring pre-compression design provides compliant contact buffer in the initial stage of clamping, and transforms into rigid support after the window frame is stably fitted. This protects the weak structure of the specimen and ensures the overall rigidity of the clamping system during testing, ultimately achieving precise displacement control and durable sealing under high loads. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of a clamping mechanism for a wind pressure testing device for building windows, as described in an embodiment of this utility model.

[0022] Figure 2 This is a schematic diagram of the buffer component described in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the linkage clamping mechanism described in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the connecting rod structure described in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the clamping plate structure described in an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Mounting frame; 200. Electric push rod; 210. Push plate; 300. Linkage plate; 400. Buffer assembly; 500. Side positioning assembly; 510. Pressure plate; 520. Sealing gasket; 600. Linkage structure; 610. First hinge seat; 620. Second hinge seat; 700. Clamping plate structure; 710. Fixing plate; 720. Disc spring; 730. Fixing clamping plate; 740. Polyurethane gasket. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] A clamping mechanism for a building window wind pressure testing device, such as Figure 1 As shown, it includes a mounting frame 100 and two side clamping devices; the two side clamping devices are symmetrically arranged on the left and right sides of the mounting frame 100, and the bottom of the side clamping devices is used to clamp the window to be tested.

[0033] The side clamping device includes a side positioning component 500, a linkage clamping mechanism, multiple electric push rods 200, multiple push plates 210, and multiple buffer components 400. The multiple electric push rods 200 are arranged below the mounting frame 100. The fixed end of the electric push rod 200 is connected to the lower end face of the mounting frame 100, and the output end of the electric push rod 200 is connected to the push plate 210. Each push plate 210 has a corresponding buffer component 400 on its lower end face. The bottom of the buffer component 400 is connected to the side positioning component 500.

[0034] The linkage end of the linkage clamping mechanism is fixedly connected to multiple push plates 210, and the clamping end of the linkage clamping mechanism is set on the side positioning component 500. The linkage clamping mechanism includes a linkage plate 300, multiple linkage structures 600 and multiple clamping plate structures 700. The linkage plate 300 is fixedly connected to multiple push plates 210. Multiple linkage structures 600 are arranged below the linkage plate 300. The top of the linkage structure 600 is hinged to the linkage plate 300, the bottom of the linkage structure 600 is hinged to the clamping plate structure 700, one side of the clamping plate structure 700 is hinged to the side positioning component 500, and the other end of the clamping plate structure 700 is used to clamp the side of the window to be tested. The linkage clamping mechanism integrates the driving force of the dispersed electric push rods 200 into a unified clamping motion through the coordinated action of the rigid linkage plate 300 and multiple sets of hinged connecting rods. This ensures that all clamping points are synchronously displaced and the force is balanced, completely eliminating window frame distortion or local stress concentration caused by differences in force applied at a single point. During the clamping process, the clamping plate angle is adaptively adjusted so that the polyurethane gasket 740 is always perpendicularly pressed against the side edge of the window frame. Even if there are slight unevenness in the window frame or installation tilt deviation, it can still maintain a full edge line contact and sealing state, greatly improving clamping stability and sealing reliability.

[0035] The linkage structure 600 includes a linkage, a first hinge seat 610 and a second hinge seat 620. The top of the linkage is connected to the linkage plate 300 through the first hinge seat 610, and the bottom of the linkage is connected to the clamping plate structure 700 through the second hinge seat 620.

[0036] The clamping structure 700 includes a fixed plate 710, an elastic fixing component, and a fixed clamping plate 730. One end of the fixed plate 710 is connected to the side positioning component 500 via a third hinge seat, and the other end of the fixed plate 710 is connected to the fixed clamping plate 730 via the elastic fixing component. A second hinge seat 620 is disposed on the upper end face of the fixed plate 710, and a polyurethane gasket 740 is provided on the contact surface between the fixed clamping plate 730 and the window to be tested. The elastic fixing component includes a locking bolt and a disc spring 720. The locking bolt passes through the fixed plate 710, and its bottom is fixedly connected to the fixed clamping plate 730. The disc spring 720 is disposed between the fixed plate 710 and the fixed clamping plate 730.

[0037] like Figure 1As shown, the buffer assembly 400 includes a telescopic rod and a buffer spring. The top of the telescopic rod is connected to the push plate 210, and the bottom of the telescopic rod is connected to the side positioning assembly 500. The buffer spring is sleeved on the outside of the telescopic rod. The buffer assembly 400 uses a composite structure of telescopic rod guidance combined with sleeve spring to actively absorb the high-frequency vibration energy during the start-stop impact of the electric push rod 200 and the wind pressure test while transmitting the clamping force, thus avoiding rigid impact that could cause the window frame glass to break or the sealing interface to detach instantly. Its spring pre-compression design provides compliant contact buffering in the initial stage of clamping, and transforms into rigid support after the window frame is stably fitted. This protects the weak structure of the specimen and ensures the overall rigidity of the clamping system during the test, ultimately achieving precise displacement control and durable sealing under high loads.

[0038] The mounting plate frame 100 includes two mounting plates and two fixed horizontal plates. The two mounting plates are arranged side by side, and the two fixed horizontal plates are symmetrically arranged between the two mounting plates. The first and second ends of the fixed horizontal plates are fixedly connected to one mounting plate, and the lower end face of the mounting plate is hinged to the fixed end of the electric push rod 200.

[0039] The side positioning assembly 500 includes a pressure plate 510 and a sealing gasket 520. The sealing gasket 520 is disposed on the lower end face of the pressure plate 510, and the upper end face of the pressure plate 510 is connected to the telescopic end of the telescopic rod. A baffle is provided on the outer end face of the pressure plate 510.

[0040] 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, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A clamping mechanism for a building window wind pressure testing device, characterized in that: Includes mounting plate frame (100) and two side clamping devices; Two of the side clamping devices are symmetrically arranged on the left and right sides of the mounting plate frame (100), and the bottom of the side clamping devices is used to clamp the window to be tested. The side clamping device includes a side positioning component (500), a linkage clamping mechanism, multiple electric push rods (200), multiple push plates (210), and multiple buffer components (400). The multiple electric push rods (200) are arranged below the mounting frame (100). The fixed end of the electric push rod (200) is connected to the lower end face of the mounting frame (100), and the output end of the electric push rod (200) is connected to the push plate (210). Each push plate (210) has a corresponding buffer component (400) on its lower end face. The bottom of the buffer component (400) is connected to the side positioning component (500). The linkage end of the linkage clamping mechanism is fixedly connected to the plurality of push plates (210), and the clamping end of the linkage clamping mechanism is disposed on the side positioning component (500).

2. The clamping mechanism for a building window wind pressure testing device according to claim 1, characterized in that: The linkage clamping mechanism includes a linkage plate (300), multiple linkage structures (600), and multiple clamping plate structures (700). The linkage plate (300) is fixedly connected to multiple push plates (210). The multiple linkage structures (600) are arranged below the linkage plate (300). The top of the linkage structure (600) is hinged to the linkage plate (300), and the bottom of the linkage structure (600) is hinged to the clamping plate structure (700). One side of the clamping plate structure (700) is hinged to the side positioning component (500), and the other end of the clamping plate structure (700) is used to clamp the side of the window to be tested.

3. The clamping mechanism for a building window wind pressure testing device according to claim 2, characterized in that: The linkage structure (600) includes a connecting rod, a first hinge seat (610) and a second hinge seat (620). The top of the connecting rod is connected to the linkage plate (300) through the first hinge seat (610), and the bottom of the connecting rod is connected to the clamping plate structure (700) through the second hinge seat (620).

4. The clamping mechanism for a building window wind pressure testing device according to claim 3, characterized in that: The clamping structure (700) includes a fixing plate (710), an elastic fixing component, and a fixing clamping plate (730). One end of the fixing plate (710) is connected to the side positioning component (500) through a third hinge seat, and the other end of the fixing plate (710) is connected to the fixing clamping plate (730) through the elastic fixing component. The second hinge seat (620) is disposed on the upper surface of the fixing plate (710), and the contact surface between the fixing clamping plate (730) and the window to be tested is provided with a polyurethane gasket (740).

5. The clamping mechanism for a building window wind pressure testing device according to claim 4, characterized in that: The elastic fixing component includes a locking bolt and a disc spring (720). The locking bolt passes through the fixing plate (710), and the bottom of the locking bolt is fixed to the fixing clamp (730). The disc spring (720) is disposed between the fixing plate (710) and the fixing clamp (730).

6. A clamping mechanism for a building window wind pressure testing device according to any one of claims 1-5, characterized in that: The buffer assembly (400) includes a telescopic rod and a buffer spring. The top of the telescopic rod is connected to the push plate (210), the bottom of the telescopic rod is connected to the side positioning assembly (500), and the buffer spring is sleeved on the outside of the telescopic rod.

7. A clamping mechanism for a building window wind pressure testing device according to claim 6, characterized in that: The mounting plate frame (100) includes two mounting plates and two fixed horizontal plates. The two mounting plates are arranged side by side, and the two fixed horizontal plates are symmetrically arranged between the two mounting plates. The first and second ends of the fixed horizontal plates are fixedly connected to one of the mounting plates. The lower end face of the mounting plate is hinged to the fixed end of the electric push rod (200).

8. A clamping mechanism for a building window wind pressure testing device according to claim 6, characterized in that: The side positioning assembly (500) includes a pressure plate (510) and a sealing gasket (520). The sealing gasket (520) is disposed on the lower end face of the pressure plate (510), and the upper end face of the pressure plate (510) is connected to the telescopic end of the telescopic rod.

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