Pressure measuring device capable of bearing radial load
By designing a pressure measuring device including a lifting mechanism, a guide rod and a sliding sleeve, the problem of radial load affecting the pressure sensor in the prior art is solved, and high-precision pressure load measurement and sensor stability are achieved.
Patent Information
- Application Number
- CN202411649417.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-03-04
AI Technical Summary
When existing pressure measuring devices bear radial loads, it is difficult to avoid the impact of radial loads on the pressure sensor, resulting in reduced data accuracy and even damage to the sensor.
A pressure measuring device including an organic base, an upper beam, a lower beam and a pressure sensor is designed. The upper beam is lifted and lowered through the lifting mechanism to provide stable pressure. The upper beam and the lower beam are separately designed, combined with the guide rod and the sliding sleeve, and the pressure load is diverted to avoid the pressure sensor from bearing radial load.
It effectively avoids the impact of radial load on the pressure sensor, improves the measurement accuracy of the compressive load, and ensures the stability and reliability of the sensor.
Smart Images
Figure CN119555584A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pressure measurement, and in particular to a pressure measuring device capable of bearing radial loads. Background Art
[0002] The friction coefficient is an important material performance parameter. It is involved in any mechanical design that can achieve relative sliding. According to the calculation formula of the friction coefficient, friction coefficient = compressive load / tensile load. If the data accuracy of the friction coefficient is to be improved, the data collection accuracy of the compressive load and the tensile load must be improved. The tensile force can be accurately measured by a horizontally placed tensile sensor, but regarding the measurement and acquisition of the compressive load, since the pressure sensor is in direct contact with the surface of the measured material, a radial load will be formed under the action of the tensile force, and the radial load will affect the data accuracy of the pressure sensor. With further data collection, it may even damage the pressure sensor. How to accurately measure the compressive load when subjected to a radial load has become a technical problem that needs to be solved urgently. Summary of the invention
[0003] The object of the present invention is to provide a pressure measuring device capable of bearing radial loads, which can effectively avoid being affected by radial loads and obtain high-precision compressive load measurement data.
[0004] In order to achieve the above object, the present invention adopts the following technical solution: A pressure measuring device capable of withstanding radial loads comprises a machine base and an upper crossbeam, the machine base being provided with a lifting mechanism for driving the upper crossbeam to rise and fall, the upper surface of the machine base being provided with two vertically arranged guide rods, the lower crossbeam being slidably sleeved on the two guide rods, the lower crossbeam being connected to the upper crossbeam via a pressure sensor, the lower surface of the lower crossbeam being provided with a first pressure mould, the upper surface of the machine base being provided with a second pressure mould, the second mould corresponding upwardly to the first pressure mould.
[0005] Furthermore, the lifting mechanism includes two screw rods and a motor for driving the screw rods to rotate, the two screw rods are vertically arranged on the upper surface of the machine base, and the upper crossbeam is screwed to the two screw rods.
[0006] Furthermore, the upper cross beam is screwed onto the screw rod through an internal thread sleeve.
[0007] Furthermore, the tops of the two guide rods and the tops of the two screw rods are connected together via a limiting plate.
[0008] Furthermore, the lower cross beam is mounted on the guide rod via a sliding sleeve.
[0009] Furthermore, the sliding sleeve is made of copper alloy material.
[0010] Furthermore, the bottom of the pressure sensor is connected to the middle position of the lower beam, the top of the pressure sensor is connected to the middle position of the upper beam, and the first pressure mold is located at the middle position of the lower surface of the lower beam.
[0011] Beneficial effects of the present invention: 1. The present invention drives the upper crossbeam to rise and fall through a lifting mechanism, stably provides pressure, and accurately controls the size of the compressive load.
[0012] 2. The upper beam used to apply pressure and the lower beam used for guidance are designed separately, and the pressure sensor is installed between the upper beam and the lower beam to achieve the diversion effect of the compressive load and the radial load. While avoiding the pressure sensor from being subjected to the radial load, the compressive load can be directly measured, thereby improving the measurement accuracy of the compressive load. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front view of a pressure measuring device capable of bearing radial loads according to the present invention.
[0014] Figure 2 It is a left side view of a pressure measuring device capable of bearing radial loads according to the present invention.
[0015] Figure 3 The invention discloses a top view of a pressure measuring device capable of bearing radial loads with a limit plate removed. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0017] like Figure 1 , Figure 2 and Figure 3 As shown, a pressure measuring device capable of withstanding radial loads comprises a base 1 and an upper crossbeam 2, the base 1 being provided with a lifting mechanism 3 for driving the upper crossbeam 2 to rise and fall, the upper surface of the base 1 being provided with two vertically arranged guide rods 4, a lower crossbeam 5 being slidably sleeved on the two guide rods 4, the lower crossbeam 5 being connected to the upper crossbeam 2 via a pressure sensor 6, a first pressure mold 10 being provided on the lower surface of the lower crossbeam 5, a second pressure mold 11 being provided on the upper surface of the base 1, and the second mold 11 corresponding upwardly to the first pressure mold 10.
[0018] The working process of the present invention is as follows: first, the sample plate 12 is placed on the upper surface of the second pressure mold 11, and the lifting mechanism 3 drives the upper beam 2 to descend, and the lower beam 5 descends as the upper beam 2 descends, so that the first pressure mold 11 applies pressure to the sample plate 12, and then provides a horizontal pulling force to the sample plate 12. The sample plate 12 will overcome the horizontal friction force and move forward. The pressure data can be collected and obtained by the pressure sensor 6. Combined with the horizontal friction force obtained by the tension sensor, the friction coefficient of the first pressure mold 11 and the second pressure mold 10 can be calculated.
[0019] It should be noted that when the friction force transfers the radial load to the lower beam 5 through the first pressure mold 11, the lower beam 5 will apply the radial load to the guide rod 4. Finally, the pressure sensor 6 will only be subjected to the compressive load but not the radial load, thereby achieving the diversion effect of the compressive load and the radial load and improving the measurement accuracy of the compressive load.
[0020] The lifting mechanism 3 includes two screw rods 3a and a motor 3b for driving the screw rods 3a to rotate. The two screw rods 3a are vertically arranged on the upper surface of the base 1, and the upper crossbeam 2 is screwed on the two screw rods 3a. The upper crossbeam 2 is screwed on the screw rods 3a through an internal thread sleeve 7.
[0021] The tops of the two guide rods 4 and the tops of the two screw rods 3a are connected together by a limit plate 8. The limit plate 8 uses the two guide rods 4 as fixed points to limit the upper and lower relative positions of the screw rods 3a, ensure the vertical setting of the screw rods 3a, and achieve the purpose of stable pressure application.
[0022] The lower cross beam 5 is sleeved on the guide rod 4 through a sleeve 9. The sleeve 9 is made of copper alloy. When the lower cross beam 5 moves up and down through the guide rod 4, the sleeve 9 made of copper alloy can reduce the friction between the lower cross beam 5 and the guide rod 4, thereby improving the measurement accuracy of the compressive load.
[0023] The bottom of the pressure sensor 6 is connected to the middle position of the lower beam 5, the top of the pressure sensor 6 is connected to the middle position of the upper beam 2, and the first pressure mold 10 is located in the middle position of the lower surface of the lower beam 5. By adjusting the relative positions of the pressure sensor 6, the upper beam 2, and the lower beam 5, the pressure can be applied more concentratedly and stably.
Claims
1. A pressure measuring device capable of withstanding radial loads, comprising a base (1), characterized in that: The machine base (1) further comprises an upper crossbeam (2), a lifting mechanism (3) for driving the upper crossbeam (2) to rise and fall is provided on the machine base (1), two vertically arranged guide rods (4) are provided on the upper surface of the machine base (1), a lower crossbeam (5) is slidably sleeved on the two guide rods (4), the lower crossbeam (5) is connected to the upper crossbeam (2) via a pressure sensor (6), a first pressure mold (10) is provided on the lower surface of the lower crossbeam (5), and a second pressure mold (11) is provided on the upper surface of the machine base (1), and the second mold (11) corresponds to the first pressure mold (10) upward.
2. The pressure measuring device capable of withstanding radial load according to claim 1, characterized in that: The lifting mechanism (3) comprises two screw rods (3a) and a motor (3b) for driving the screw rods (3a) to rotate. The two screw rods (3a) are vertically arranged on the upper surface of the machine base (1), and the upper crossbeam (2) is screwed onto the two screw rods (3a).
3. The pressure measuring device capable of withstanding radial loads according to claim 2, characterized in that: The upper cross beam (2) is screwed onto the screw rod (3a) via an internal thread sleeve (7).
4. The pressure measuring device capable of bearing radial loads according to claim 2 or 3, characterized in that: The tops of the two guide rods (4) and the tops of the two screw rods (3a) are connected together via a limiting plate (8).
5. The pressure measuring device capable of withstanding radial loads according to any one of claims 1 to 4, characterized in that: The lower cross beam (5) is sleeved on the guide rod (4) via a sliding sleeve (9).
6. The pressure measuring device capable of withstanding radial loads according to claim 5, characterized in that: The sliding sleeve (9) is made of copper alloy material.
7. The pressure measuring device capable of withstanding radial loads according to any one of claims 1 to 6, characterized in that: The bottom of the pressure sensor (6) is connected to the middle position of the lower crossbeam (5), the top of the pressure sensor (6) is connected to the middle position of the upper crossbeam (2), and the first pressure mold (10) is located at the middle position of the lower surface of the lower crossbeam (5).