A pressure testing mechanism and a pressure testing method

Abstract

This invention provides a pressure detection mechanism and method, including a mounting frame, a slide rail, a linkage assembly, and a driving component. The mounting frame is mounted on a pressure detection device. The slide rail is slidably connected to the mounting frame in a vertical direction, and a pressure sensor is provided on the upper end surface of the slide rail. The linkage assembly includes an upper connecting rod hinged to the slide rail and a lower connecting rod hinged to the mounting frame, with the outer ends of the upper and lower connecting rods hinged together. The fixed end of the driving component is hinged to the mounting frame, and the extended end of the driving component is hinged to the inner end of the lower connecting rod. The driving component can drive the lower connecting rod to swing upward and move the slide rail upward until the pressure sensor presses against the bottom of the load. The pressure detection mechanism of this invention has a simple structure, is safe and reliable, and can achieve pressure detection over a large travel range of the slide rail through a small travel distance of the driving component, greatly improving the applicability of the pressure detection device and possessing high market application value.

Description

Technical Field

[0001] This invention belongs to the technical field of load pressure detection, specifically relating to a pressure detection mechanism and a pressure detection method. Background Technology

[0002] Load pressure testing, which measures the load pressure a system can withstand under certain constraints, is an important method for testing equipment performance. In automated parking systems for electric bicycles, it is often necessary to monitor the load pressure value of a specific conveying stroke of the load-bearing component in real time. Current technology typically uses cylinders or electric cylinders to perform linear motion, bringing the system into contact with the load and applying a pushing force, while pressure sensors detect the pressure at different stroke positions. However, the maximum linear stroke of these cylinders is often limited by the length of the linear guide. When a larger stroke is required, the length of the linear guide must be increased accordingly, necessitating a larger overall size of the pressure detection mechanism. This makes it difficult to apply in confined spaces and increases manufacturing costs. Summary of the Invention

[0003] This invention provides a pressure detection mechanism and a pressure detection method, which enables the driving component to control the detection of pressure values ​​within a large stroke range with a small extension distance, thereby improving the applicability of the pressure detection mechanism.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: Firstly, a pressure detection mechanism is provided, suitable for installation on a pressure detection device, comprising a mounting frame, a slide rail, a connecting rod assembly, and a driving component. The mounting frame is fixedly mounted on the pressure detection device. The slide rail is slidably connected to the mounting frame in a vertical direction, and a pressure sensor is provided on the upper end surface of the slide rail. The connecting rod assembly includes an upper connecting rod hinged to the slide rail and a lower connecting rod hinged to the mounting frame. The lower connecting rod is located below the upper connecting rod, and the outer end of the upper connecting rod is hinged to the outer end of the lower connecting rod. The driving component is located below the connecting rod assembly, with its fixed end hinged to the mounting frame and its extended end hinged to the inner end of the lower connecting rod. The driving component can drive the lower connecting rod to swing upwards to increase the angle between the upper and lower connecting rods and to move the slide rail upwards until the pressure sensor presses against the bottom of the load.

[0005] In another embodiment of the present invention, a slide rail fixing block is connected to the mounting frame, and the slide rail fixing block is provided with a slide groove that extends in the vertical direction and slides with the slide rail.

[0006] In another embodiment of the present invention, guide posts that protrude outward and extend along the direction of the slide rail are respectively embedded on the left and right side walls of the slide rail, and guide arc grooves that correspond one-to-one with the guide posts and slide in cooperation are respectively provided on the groove side walls of the slide groove.

[0007] In another embodiment of the present invention, a plurality of outwardly protruding guide rollers are rotatably connected to the left and right side walls of the slide rail and are spaced apart along the direction of the slide rail. The side walls of the slide groove are respectively provided with guide grooves that roll in cooperation with the guide rollers.

[0008] In another embodiment of the present invention, a reinforcing plate is connected to the front side of the slide rail. The reinforcing plate is provided with two hinge holes arranged vertically and vertically for mounting the reinforcing plate. The inner end of the upper connecting rod is hinged to one of the hinge holes.

[0009] In another embodiment of the present invention, the mounting frame includes a fixed square tube, a fixed bracket, a U-shaped mounting block, and a fixed seat. The fixed square tube is horizontally connected to the pressure testing equipment. The fixed bracket is connected to the front side of the fixed square tube and extends downward. The slide rail fixing block is connected to the front side of the fixed bracket. The U-shaped mounting block is connected to the fixed bracket and extends to the front side of the slide rail fixing block. The inner end of the lower connecting rod is hinged to the U-shaped mounting block. The fixed seat is connected to the fixed bracket. The fixed end of the driving member is hinged to the fixed seat, and there is an angle between the axis of the driving member and the axis of the slide rail.

[0010] In another embodiment of the present invention, the outer end of the lower connecting rod is hinged to a hinge block that is hinged to the outer end of the upper connecting rod.

[0011] In another embodiment of the present invention, the lower connecting rod and the hinge block are hinged by a horizontally extending hinge slide rod. The inner end of the hinge slide rod is connected to a hinge slider. The mounting frame is provided with an arc-shaped guide rail that slides with the hinge slider and guides the hinge block to slide in an arc.

[0012] In another embodiment of the present invention, a damping buffer is hinged between the middle part of the lower connecting rod and the middle part of the upper connecting rod.

[0013] The beneficial effects of the pressure detection mechanism provided by this invention are as follows: Compared with the prior art, in the pressure detection mechanism of this invention, the inner end of the lower connecting rod is hinged to the mounting frame, the inner end of the upper connecting rod is hinged to the slide rail, and the outer end of the driving member is hinged to the lower part of the lower connecting rod. The outer end of the driving member extends out and drives the lower connecting rod to swing upward around the hinge point with the mounting frame, thereby driving the upper connecting rod to move upward. Due to the hinge relationship between the upper connecting rod and the slide rail and the sliding fit limitation between the mounting frame and the slide rail, the inner end of the upper connecting rod pushes the slide rail to slide upward. The pressure sensor located on the upper end surface of the slide rail contacts the load above and generates a pressure value, realizing real-time monitoring of the load pressure value at different stroke positions. The pressure detection mechanism provided in this embodiment has a simple structure, is safe and reliable, and can realize pressure detection within a large stroke range of the slide rail through a small stroke of the driving member, greatly improving the applicability of the pressure detection equipment and having high market promotion and application value.

[0014] Secondly, embodiments of the present invention also provide a method for pressure detection using a pressure detection mechanism, the pressure detection method comprising the following steps:

[0015] S1. Start the drive unit so that the extended end of the drive unit extends outward and lifts the connecting rod assembly upward, thereby driving the slide rail to slide upward until the pressure sensor contacts the load above;

[0016] S2. The extended end of the drive component continues to extend, and the pressure sensor monitors the load pressure value at different stroke positions in real time;

[0017] S3. The drive unit stops moving, keeping the slide rail in the preset position, and the pressure sensor monitors the load pressure value at the preset position in real time;

[0018] S4. Reverse start drive retracts the extended end of the drive and pulls the connecting rod assembly downward, thereby driving the slide rail to reset. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of the pressure detection mechanism provided in an embodiment of the present invention;

[0020] Figure 2 This is a structural schematic diagram of the minimum stroke position state of the pressure detection mechanism provided in an embodiment of the present invention;

[0021] Figure 3 This is a structural schematic diagram of the pressure detection mechanism at its maximum stroke position according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of one embodiment of the slide rail provided in this invention;

[0023] Figure 5 This is a schematic diagram of one embodiment of the slide rail fixing block provided in this invention.

[0024] Figure 6 A schematic diagram of another embodiment of the slide rail provided in this invention;

[0025] Figure 7 A schematic diagram of another embodiment of the slide rail fixing block provided in this invention;

[0026] Figure 8 A schematic diagram of another embodiment of the linkage assembly provided in this invention;

[0027] Figure 9 This is a schematic diagram of another embodiment of the pressure detection mechanism provided in this invention;

[0028] Figure 10This is a schematic diagram of another embodiment of the pressure detection mechanism provided in this invention.

[0029] In the picture:

[0030] 1. Mounting frame; 11. Fixed square tube; 12. Fixed bracket; 13. U-shaped mounting block; 14. Fixed seat; 15. Arc-shaped guide rail; 2. Slide rail; 21. Guide column; 22. Guide roller; 23. Reinforcing plate; 231. Hinge hole; 3. Pressure sensor; 4. Linkage assembly; 41. Upper connecting rod; 42. Lower connecting rod; 43. Hinge block; 44. Hinge slide rod; 45. Hinge slider; 46. Damping buffer; 5. Driving component; 6. Slide rail fixing block; 61. Slide groove; 611. Guide arc groove; 612. Guide flat groove; 10. Load. Detailed Implementation

[0031] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "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 the invention 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 the invention. The terms "first" and "second" 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0033] Please refer to the following: Figures 1 to 3The present invention provides a pressure detection mechanism. The pressure detection mechanism, suitable for installation on a pressure detection device, includes a mounting frame 1, a slide rail 2, a connecting rod assembly 4, and a driving component 5. The mounting frame 1 is fixedly mounted on the pressure detection device. The slide rail 2 is slidably connected to the mounting frame 1 in a vertical direction, and a pressure sensor 3 is provided on the upper end surface of the slide rail 2. The connecting rod assembly 4 includes an upper connecting rod 41 hinged to the slide rail 2 and a lower connecting rod 42 hinged to the mounting frame 1. The lower connecting rod 42 is located below the upper connecting rod 41, and the outer end of the upper connecting rod 41 is hinged to the outer end of the lower connecting rod 42. The driving component 5 is located below the connecting rod assembly 4. The fixed end of the driving component 5 is hinged to the mounting frame 1, and the extended end of the driving component 5 is hinged to the inner end of the lower connecting rod 42. The driving component 5 can drive the lower connecting rod 42 to swing upwards to increase the angle between the upper connecting rod 41 and the lower connecting rod 42, and cause the slide rail 2 to move upwards until the pressure sensor 3 presses against the bottom of the load 10.

[0034] Compared with the prior art, the pressure detection mechanism provided in this embodiment has the following characteristics: the inner end of the lower connecting rod 42 is hinged to the mounting frame 1, the inner end of the upper connecting rod 41 is hinged to the upper slide rail 2, and the outer end of the driving member 5 is hinged to the lower part of the lower connecting rod 42. The outer end of the driving member 5 extends out and drives the lower connecting rod 42 to swing upward around the hinge point with the mounting frame 1, thereby driving the upper connecting rod 41 to move upward. Due to the hinge relationship between the upper connecting rod 41 and the slide rail 2 and the sliding fit restriction between the mounting frame 1 and the slide rail 2, the inner end of the upper connecting rod 41 pushes the slide rail 2 to slide upward. The pressure sensor 3 located on the upper surface of the slide rail 2 contacts the load 10 above and generates a pressure value, realizing real-time monitoring of the load pressure value at different stroke positions. The pressure detection mechanism provided in this embodiment has a simple structure, is safe and reliable, and can realize pressure detection within a large stroke range of the slide rail 2 through the small stroke of the driving member 5, greatly improving the applicability of the pressure detection equipment and having high market promotion and application value.

[0035] In this embodiment, the pressure detection mechanism is also equipped with a controller and a remote controller. The controller is electrically connected to the remote controller, the pressure sensor 3 and the drive component 5 respectively. The drive component 5 adopts an electric push rod or an electric cylinder structure, which facilitates the formation of an electrical connection with the controller and the remote controller to realize intelligent pressure detection.

[0036] The propulsion stroke of the drive component 5 can be controlled within 50mm, enabling the slide rail 2 to achieve lifting and lowering within a large stroke range of 0-450mm, with a stroke ratio of up to 1:9. Furthermore, by selecting different specifications of the drive component 5, the thrust of the slide rail 2 can reach 0.1-0.5 times the thrust of the drive component 5. Different specifications of the drive component 5 can be selected based on the actual load 10.

[0037] Furthermore, the drive component 5 has a self-locking function, which can lock at a certain preset stroke position so that the slide rail 2 is stably maintained at the corresponding pressure detection position, thereby improving the reliability and safety of the pressure detection mechanism.

[0038] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to the following: Figure 1 , Figures 4 to 7 The mounting frame 1 is connected to a slide rail fixing block 6, and the slide rail fixing block 6 is provided with a slide groove 61 that extends in the vertical direction and slides with the slide rail 2.

[0039] In this embodiment, the slide rail fixing block 6 is disposed on the front side of the mounting frame 1, and the slide rail fixing block 6 is provided with a slide groove 61 that opens forward and runs vertically through the frame. The slide rail 2 can adopt a T-shaped or V-shaped cross-sectional structure, and correspondingly, the slide groove 61 also adopts a T-shaped or V-shaped cross-sectional structure to slide and cooperate with the slide rail 2, thereby improving the stability of the slide rail 2 during the up and down sliding process.

[0040] A slide rail fixing block 6 is set on the mounting frame 1. During the processing, only the groove wall of the slide groove 61 on the slide rail fixing block 6 needs to be finely processed, which reduces the processing difficulty of the mounting frame 1 and saves processing costs.

[0041] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to the following: Figure 4 and Figure 5 The left and right side walls of the slide rail 2 are respectively fitted with guide posts 21 that protrude outward and extend along the direction of the slide rail 2. The side wall of the slide groove 61 is respectively provided with guide arc grooves 611 that correspond one-to-one with the guide posts 21 and slide together.

[0042] In this embodiment, mounting grooves extending vertically are formed on the left and right side walls of the slide rail 2. Guide posts 21 are connected to these mounting grooves and protrude outwards from the side walls of the slide rail 2. Guide arc grooves 611 extending vertically are formed on the side wall of the slide groove 61 of the slide rail fixing block 6. The portion of the guide post 21 protruding from the side wall of the slide rail 2 engages with the guide arc groove 611 and slides vertically along it. This sliding engagement between the guide post 21 and the guide arc groove 611 provides positioning and guidance for the vertical sliding of the slide rail 2, improving the stability of the slide rail 2 during its movement.

[0043] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to the following: Figure 6 and Figure 7 Several outwardly protruding guide rollers 22 are rotatably connected to the left and right side walls of the slide rail 2 and are spaced apart along the direction of the slide rail 2. The side wall of the slide groove 61 is provided with guide flat grooves 612 that roll with the guide rollers 22.

[0044] In this embodiment, an installation groove is formed on the side wall of the slide rail 2, and several guide rollers 22 are rotatably connected in the installation groove at intervals in the vertical direction, with the axis of the guide rollers 22 arranged in the front-back direction. A guide groove 612 extending vertically is formed on the side wall of the slide groove 61 of the slide rail fixing block 6. The width of the guide groove 612 is adapted to the length of the guide rollers 22, so that while the guide rollers 22 roll within the guide groove 612, they also limit the movement of the slide rail 2 in the front-back direction. The rolling contact between the guide rollers 22 and the guide groove 612 reduces the frictional resistance during the vertical sliding of the slide rail 2, making the sliding process of the slide rail 2 smoother.

[0045] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to the following: Figure 1 and Figure 3 A reinforcing plate 23 is connected to the upper side of the front side of the slide rail 2. The reinforcing plate 23 has two hinge holes 231 arranged vertically and vertically for mounting the reinforcing plate 23. The inner end of the upper connecting rod 41 is hinged to one of the hinge holes 231.

[0046] In this embodiment, the front side of the slide rail 2 is provided with a number of evenly arranged positioning holes along the vertical direction. The distance between the two hinge holes 231 on the reinforcing plate 23 is equal to the distance between the two adjacent positioning holes on the slide rail 2, so as to facilitate the installation of the reinforcing plate 23 and to facilitate the adjustment of the connection position of the reinforcing plate 23 on the slide rail 2 to meet the requirements of different initial positions of the slide rail 2.

[0047] The hinge position of the upper connecting rod 41 and the reinforcing plate 23 is different, and the swing angle of the connecting rod assembly 4 is also different. The hinge position of the upper connecting rod 41 and the reinforcing plate 23 can be selected according to the actual stroke requirements, which further improves the applicability of the pressure detection mechanism.

[0048] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to [link / reference]. Figure 1 The mounting frame 1 includes a fixed square tube 11, a fixed bracket 12, a U-shaped mounting block 13, and a fixed seat 14. The fixed square tube 11 is horizontally connected to the pressure testing equipment. The fixed bracket 12 is connected to the front side of the fixed square tube 11 and extends downward. The slide rail fixing block 6 is connected to the front side of the fixed bracket 12. The U-shaped mounting block 13 is connected to the fixed bracket 12 and extends to the front side of the slide rail fixing block 6. The inner end of the lower connecting rod 42 is hinged to the U-shaped mounting block 13. The fixed seat 14 is connected to the fixed bracket 12. The fixed end of the driving member 5 is hinged to the fixed seat 14, and there is an angle between the axis of the driving member 5 and the axis of the slide rail 2.

[0049] In this embodiment, the fixed square tube 11 is horizontally positioned for easy connection to the pressure testing equipment. The fixed bracket 12 is an L-shaped steel component, bolted to the top surface of the fixed square tube 11. The fixed bracket 12 can be adjusted along the direction of the fixed square tube 11 to adapt to different pressure testing positions. The slide rail fixing block 6 is connected to the front side of the fixed bracket 12. The opening of the U-shaped mounting block 13 faces the slide rail fixing block 6, and the inner end of the lower connecting rod 42 is hinged to the inner sidewall of the opening of the U-shaped mounting block 13.

[0050] The fixed base 14 is formed by welding two channel steels into an L-shape, which facilitates the installation of the drive component 5. The fixed base 14 is welded to the fixed bracket 12 at a certain angle, so that the axis of the drive component 5 forms an angle with the slide rail 2. The hinge position of the extended end of the drive component 5 and the lower connecting rod 42 is close to the hinge position of the lower connecting rod 42 and the U-shaped mounting block 13. In this way, the inclined drive component 5 can achieve a large range of swing of the linkage assembly 4 with a smaller pushing stroke, thereby further increasing the lifting stroke of the slide rail 2.

[0051] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to [link / reference]. Figure 8 The outer end of the lower connecting rod 42 is hinged to a hinge block 43 that is hinged to the outer end of the upper connecting rod 41.

[0052] In this embodiment, the hinge block 43 is hinged to the outer ends of the upper connecting rod 41 and the lower connecting rod 42 respectively. The hinge block 43 is equivalent to another connecting rod in the connecting rod assembly 4, so that the connecting rod assembly 4 forms a three-bar hinge structure, which further increases the swing range of the connecting rod assembly 4.

[0053] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to the following: Figure 8 and Figure 9 The lower connecting rod 42 and the hinge block 43 are hinged together by a horizontally extending hinge slide rod 44. The inner end of the hinge slide rod 44 is connected to a hinge slider 45. The mounting frame 1 is provided with an arc-shaped guide rail 15 that slides with the hinge slider 45 and is used to guide the hinge block 43 to slide in an arc.

[0054] In this embodiment, the lower connecting rod 42 and the hinge block 43 are hinged by the hinge slide rod 44. During the swinging process of the connecting rod assembly 4, the hinge slide rod 44 moves in a circular motion around the hinge point between the lower connecting rod 42 and the mounting frame 1. In order to further improve the stability of the swinging process of the connecting rod assembly 4, an arc-shaped guide rail 15 is provided to guide the circular motion of the hinge slide rod 44 and prevent the hinge block 43 in the free state from vibrating during the swinging process.

[0055] Specifically, the arc-shaped guide rail 15 connects the fixed bracket 12 and the fixed base 14. The inner end of the hinged slide rod 44 is connected to the hinged slider 45, which can be cylindrical or spherical. Correspondingly, an arc-shaped guide groove is formed on the arc-shaped guide rail 15 to slide and engage with the hinged slider 45. By guiding the hinged slider 45 through the arc-shaped guide rail 15, the stability of the linkage assembly 4 during the swing process is improved, thereby improving the stability of the slide rail 2 during the lifting process.

[0056] As one specific embodiment of the pressure detection mechanism provided by this invention, please refer to [link / reference]. Figure 10 A damping buffer 46 is hinged between the middle part of the lower connecting rod 42 and the middle part of the upper connecting rod 41.

[0057] In this embodiment, the damping buffer 46 can be a damping cylinder or an elastic element such as a spring. Since the angle between the upper connecting rod 41 and the lower connecting rod 42 changes with the swing of the connecting rod assembly 4, both ends of the damping buffer 46 need to be hinged to the upper connecting rod 41 and the lower connecting rod 42 respectively. The damping buffer 46 can prevent the connecting rod assembly 4 from vibrating during the swing, thereby causing errors in pressure measurement.

[0058] Based on the same inventive concept, embodiments of the present invention also provide a method for pressure detection using a pressure detection mechanism, the pressure detection method comprising the following steps:

[0059] S1. Start the drive unit 5 so that the extended end of the drive unit 5 extends outward and lifts the connecting rod assembly 4 upward, thereby driving the slide rail 2 to slide upward until the pressure sensor 3 contacts the load 10 above;

[0060] S2. The extended end of the drive component 5 continues to extend, and the pressure sensor 3 monitors the load pressure value at different stroke positions in real time;

[0061] S3. The drive unit 5 stops moving, so that the slide rail 2 is held in the preset position, and the pressure sensor 3 monitors the load pressure value at the preset position in real time.

[0062] S4. Reverse start drive 5 retracts the extended end of drive 5 and pulls down the connecting rod assembly 4, thereby driving slide rail 2 to reset.

[0063] In this embodiment, the remote controller can display the travel value and load pressure value of the slide rail 2, and is equipped with control buttons for "Extend", "Stop", "Retract", and "Reset". First, pressing the "Extend" button causes the extended end of the drive component 5 to extend outward, driving the lower connecting rod 42 to rotate around the hinge point with the mounting frame 1. The lower connecting rod 42 causes the upper connecting rod 41 to swing, simultaneously lifting the upper connecting rod 41 upward, thereby pushing the slide rail 2 upward along the slide rail fixing block 6. The pressure sensor 3 on the upper surface of the slide rail 2 contacts the load 10 above and generates a pressure value. The extended end of the drive component 5 continues to extend outward, allowing the pressure sensor 3 to monitor the load pressure value at different travel positions in real time and transmit the detection data to the controller. When the preset travel position is reached, pressing the "Stop" button activates the self-locking function of the drive component 5, keeping the slide rail 2 in the preset position, and the pressure sensor 3 detects the pressure at that preset position. After detection, pressing the "Retract" button retracts the extended end of the drive component 5, causing the slide rail 2 to slide downward to the initial position. During the entire testing process, if any special circumstances arise, the "Reset" button can be pressed at any time to reset and unload slide rail 2.

[0064] The pressure detection method provided in this embodiment can achieve intelligent pressure detection over a large stroke range with a small stroke of the drive component 5. It is simple to operate and the pressure detection data is accurate and reliable. It can be widely used in equipment such as intelligent engraving machines, intelligent testing platforms, and intelligent multi-level parking lots.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure detection mechanism, suitable for installation on pressure detection equipment, characterized in that, include: The mounting frame is fixedly installed on the pressure testing equipment; A slide rail is slidably connected to the mounting frame in the vertical direction, and a pressure sensor is provided on the upper end surface of the slide rail; The linkage assembly includes an upper connecting rod hinged to the slide rail and a lower connecting rod hinged to the mounting frame. The lower connecting rod is located below the upper connecting rod, and the outer end of the upper connecting rod is hinged to the outer end of the lower connecting rod. A driving component is disposed below the connecting rod assembly. The fixed end of the driving component is hinged to the mounting frame, and the extended end of the driving component is hinged to the inner end of the lower connecting rod. The driving component can drive the lower connecting rod to swing upward to increase the angle between the upper connecting rod and the lower connecting rod, and cause the slide rail to move upward until the pressure sensor presses against the bottom of the load.

2. The pressure detection mechanism as described in claim 1, characterized in that, The mounting frame is connected to a slide rail fixing block, and the slide rail fixing block is provided with a slide groove that extends in the vertical direction and slides with the slide rail.

3. The pressure detection mechanism as described in claim 2, characterized in that, The left and right side walls of the slide rail are respectively fitted with outwardly protruding guide posts that extend along the direction of the slide rail. The side walls of the slide groove are respectively provided with guide arc grooves that correspond one-to-one with the guide posts and slide in cooperation.

4. The pressure detection mechanism as described in claim 2, characterized in that, Several outwardly protruding guide rollers are rotatably connected to the left and right side walls of the slide rail and are spaced apart along the direction of the slide rail. The side wall of the slide groove is provided with guide grooves that roll in cooperation with the guide rollers.

5. A pressure detection mechanism as described in claim 1, characterized in that, A reinforcing plate is connected to the front side of the slide rail. The reinforcing plate has two hinge holes spaced apart vertically for mounting the reinforcing plate. The inner end of the upper connecting rod is hinged to one of the hinge holes.

6. A pressure detection mechanism as described in claim 5, characterized in that, The mounting frame includes: A fixed square tube is horizontally connected to the pressure testing equipment; A fixed bracket is connected to the front side of the fixed square tube and extends downward; the slide rail fixing block is connected to the front side of the fixed bracket. The U-shaped mounting block is connected to the fixed bracket and extends to the front side of the slide rail fixing block; the inner end of the lower connecting rod is hinged to the U-shaped mounting block. A fixed base is connected to the fixed bracket, the fixed end of the driving member is hinged to the fixed base, and there is an angle between the axis of the driving member and the axis of the slide rail.

7. A pressure detection mechanism as described in claim 1, characterized in that, The outer end of the lower connecting rod is hinged to a hinge block that is hinged to the outer end of the upper connecting rod.

8. A pressure detection mechanism as described in claim 7, characterized in that, The lower connecting rod and the hinge block are hinged by a horizontally extending hinge slide rod. The inner end of the hinge slide rod is connected to a hinge slider. The mounting frame is provided with an arc-shaped guide rail that slides with the hinge slider and guides the hinge block to slide in an arc.

9. A pressure detection mechanism as described in claim 1, characterized in that, A damping buffer is hinged between the middle part of the lower connecting rod and the middle part of the upper connecting rod.

10. A pressure detection method, characterized in that, Pressure testing is performed using the pressure testing mechanism as described in any one of claims 1-9, and the pressure testing method includes the following steps: S1. Activate the drive unit to extend the outward end of the drive unit and lift the connecting rod assembly upward, thereby driving the slide rail to slide upward until the pressure sensor contacts the load above; S2. The extended end of the drive component continues to extend, and the pressure sensor monitors the load pressure value at different stroke positions in real time; S3. The driving component stops operating, keeping the slide rail in a preset position, and the pressure sensor monitors the load pressure value at the preset position in real time; S4. Reverse the start of the drive unit to retract the extended end of the drive unit and pull the connecting rod assembly downward, thereby driving the slide rail to reset.

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