Lifting mechanism of thermal conductivity tester

Abstract

The utility model relates to the technical field of detection instrument for building, specifically is a kind of heat conductivity coefficient measuring instrument's lifting mechanism, including rack and hoisting steel wire rope, the rack inside is equipped with the electric cylinder for adjusting by bolt, and rack top end surface is equipped with the roof beam for supporting by bolt, the roof beam bottom end surface is provided with pulley assembly, and the rack inside is provided with heat plate part;In the process of using the lifting mechanism of heat conductivity coefficient measuring instrument, electric cylinder can be operated and hoisting steel wire rope is pulled to drive lifting frame, and heat plate part inside the rack is driven to lift displacement, so that the test piece is conveniently clamped and loosened, linear bearing is arranged on the both sides of lifting frame, linear bearing does linear motion along the guide shaft fixed on the both sides of the outer periphery of rack, so that the condition that heat plate part shakes left and right during hoisting is avoided, so that heat conductivity coefficient measuring instrument can be more stably used.

Description

Technical Field

[0001] This utility model relates to the field of building testing instruments, specifically to a lifting mechanism for a thermal conductivity measuring instrument. Background Technology

[0002] A thermal conductivity meter is used to measure the thermal conductivity and insulation performance of heat-resistant materials. The performance of heat-resistant and heat-insulating materials is determined by their thermal conductivity. The thermal conductivity of a material depends on many factors, such as its composition, porosity, water absorption, water content, internal structure, and the environment and temperature during heat conduction. Accurate measurement of thermal conductivity is of great significance for environmental engineering, building engineering, industrial engineering, scientific research, and energy conservation.

[0003] Most existing thermal conductivity meters use a cylinder to clamp the specimen in a vertical plane using a cold plate assembly (or hot plate assembly). The cylinder's operation requires not only an air pump but also auxiliary components such as a pressure regulating valve, solenoid valve, buffer, air pipe, and air pipe connectors. The numerous auxiliary components increase the probability of equipment failure and complicate maintenance. Regular inspection and replacement of components throughout the air circuit are necessary (to address issues such as loose air pipe connectors, stuck solenoid valve cores, and worn cylinder seals), resulting in high maintenance costs. However, cylinders also suffer from cumbersome operation. Each time the equipment starts working, the air pump must be turned on first, and after the air pressure gradually rises and stabilizes, the pressure regulating valve must be checked to ensure it meets requirements. Only after confirming everything is correct can the cylinder be activated via a switch or control system. When finishing work, the air pump must be turned off first, and after the system pressure is completely released, the pressure regulating valve knob must be turned counterclockwise to the relaxed state (to prevent the spring from deforming due to prolonged pressure). Furthermore, cylinders have poor environmental adaptability, are significantly affected by low-temperature condensation or high-temperature aging, and are easily clogged by dust and particulate matter, or their internal parts may wear down. Therefore, we propose a lifting mechanism for a thermal conductivity meter. This lifting mechanism is an internal component of the thermal conductivity meter, used to raise and lower the hot plate assembly above the specimen. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a lifting mechanism for a thermal conductivity measuring instrument.

[0005] The technical solution adopted by this utility model to solve its technical problem is a lifting mechanism for a thermal conductivity measuring instrument, including a frame and a lifting wire rope. An electric cylinder for adjustment is bolted to the inner side of the frame, and a top beam for support is bolted to the top surface of the frame. A pulley assembly is provided on the bottom surface of the top beam, and a hot plate assembly is provided on the inner side of the frame. A lifting frame for hoisting is bolted to the top surface of the hot plate assembly, and the lifting wire rope passes through the cable trays of the top clamping blocks A and B of the lifting frame and is connected to the power output end of the electric cylinder.

[0006] By adopting the above technical solution, during the use of the lifting mechanism of the thermal conductivity meter, the electric cylinder can operate and the lifting frame can be easily pulled by the lifting wire rope. The lifting frame can then drive the hot plate assembly inside the frame to move up and down, thus facilitating the clamping and loosening of the specimen. Linear bearings are installed on both sides of the lifting frame. The linear bearings move linearly along the guide shafts fixed on the left and right sides of the outer periphery of the frame, thereby avoiding left and right swaying during the lifting of the hot plate assembly and enabling the thermal conductivity meter to be used more stably.

[0007] Specifically, the outer side walls of the frame are equipped with crossbeams for auxiliary support, and there are two sets of crossbeams. The outer wall surfaces of the crossbeams are equipped with lugs, and there are two sets of lugs. A guide shaft for limiting is installed between the two sets of lugs. The outer surface of the lifting frame is equipped with linear bearings that fit with the guide shaft, and there are multiple sets of linear bearings.

[0008] By adopting the above technical solution, the crossbeam on the frame can easily support the guide shaft, and when the lifting frame drives the hot plate assembly to move up and down, it can drive multiple sets of linear bearings to slide along the guide shaft, thereby improving the stability of the hot plate assembly during the up and down movement, so that the hot plate assembly can clamp and release the specimen more stably, which is convenient for testing the specimen.

[0009] Specifically, the lifting wire rope is wound around the pulley assembly.

[0010] By adopting the above technical solution, the lifting wire rope passes through the pulley assembly on the top beam and matches the track on the pulley assembly, so that the electric cylinder can adjust the height of the lifting frame by pulling the lifting wire rope. In addition, the pulleys in the pulley assembly can rotate easily, which helps to reduce the damage caused by friction between the lifting wire rope and the pulley when pulling.

[0011] Specifically, the multiple sets of linear bearings are evenly distributed on the outer periphery of the lifting frame.

[0012] By adopting the above technical solution, the linear bearings evenly distributed on the outer periphery of the lifting frame can mesh with multiple sets of guide shafts on the frame, thereby providing auxiliary limit for the lifting of the lifting frame and enabling the lifting frame to perform lifting displacement movements more smoothly.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The technical solution of this application, through the design of an electric cylinder, pulley assembly, lifting wire rope, lifting frame, top beam, and hot plate assembly, enables the electric cylinder to operate and conveniently pull the lifting frame via the lifting wire rope during the use of the lifting mechanism of the thermal conductivity meter. This allows the lifting frame to drive the hot plate assembly inside the frame to move up and down, facilitating the clamping and loosening of the specimen. Linear bearings are installed on both sides of the lifting frame, and the linear bearings move linearly along the guide shafts fixed on the left and right sides of the outer periphery of the frame, thereby avoiding left and right swaying during the lifting of the hot plate assembly and enabling the thermal conductivity meter to be used more stably.

[0015] 2. The technical solution of this application, through the design of crossbeam, lug, guide shaft and linear bearing, the crossbeam on the frame can easily support the guide shaft, and when the lifting frame drives the hot plate assembly to move up and down, it can drive multiple sets of linear bearings to slide along the guide shaft, thereby improving the stability of the hot plate assembly during the up and down movement, so that the hot plate assembly can clamp and release the specimen more stably, which is convenient for testing the specimen.

[0016] 3. The technical solution of this application has lower maintenance costs, no risk of air leakage in the electric cylinder, low maintenance frequency, and simple maintenance content (mainly lubrication of the motor and transmission components), and a longer lifespan compared to the pneumatic cylinder; it is easy to operate; during operation, only parameters such as position, speed, and thrust need to be set in the controller, and the parameter adjustment can be completed digitally through electrical signal control, without the need for manual adjustment of mechanical parts; it has stronger environmental adaptability, the electric cylinder is adaptable to a variety of environments, and has relatively high stability. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is an isometric view of the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure between the linear bearing and the guide shaft of this utility model;

[0020] Figure 3 This is a schematic diagram of the frame structure of this utility model;

[0021] In the diagram: 1. Electric cylinder; 2. Pulley assembly; 3. Lifting wire rope; 4. Lifting frame; 5. Hot plate assembly; 6. Linear bearing; 7. Guide shaft; 8. Frame; 9. Crossbeam; 10. Ear seat; 11. Top beam. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a lifting mechanism for a thermal conductivity measuring instrument, including a frame 8 and a lifting wire rope 3. An electric cylinder 1 for adjustment is bolted to the inner side of the frame 8, and a top beam 11 for support is bolted to the top surface of the frame 8. A pulley assembly 2 is provided on the bottom surface of the top beam 11, and a hot plate assembly 5 is provided on the inner side of the frame 8. A lifting frame 4 for hoisting is bolted to the top surface of the hot plate assembly 5, and the lifting wire rope 3 passes through the cable groove of the top clamping block A and clamping block B of the lifting frame 4 and is connected to the power output end of the electric cylinder 1.

[0024] During use, the lifting device for the thermal conductivity meter allows the electric cylinder 1 to operate and easily pull the lifting frame 4 via the lifting wire rope 3. This causes the lifting frame 4 to move the hot plate assembly 5 inside the frame 8 up and down, facilitating the clamping and loosening of the specimen. Linear bearings 6 are installed on both sides of the lifting frame 4. The linear bearings 6 move linearly along the guide shafts 7 fixed on the left and right sides of the outer periphery of the frame 4, thus preventing the hot plate assembly 5 from swaying left and right during lifting and allowing the thermal conductivity meter to be used more stably.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the outer side walls of the frame 8 are equipped with crossbeams 9 for auxiliary support, and there are two sets of crossbeams 9. The outer wall surface of the crossbeams 9 is equipped with lugs 10, and there are two sets of lugs 10. A guide shaft 7 for limiting is installed between the two sets of lugs 10. The outer surface of the lifting frame 4 is equipped with linear bearings 6 that fit with the guide shafts 7, and there are multiple sets of linear bearings 6.

[0026] During use, the crossbeam 9 on the frame 8 provides convenient support for the guide shaft 7. When the lifting frame 4 moves the hot plate assembly 5 up and down, it can drive multiple sets of linear bearings 6 to slide along the guide shaft 7, thereby improving the stability of the hot plate assembly 5 during up and down movement. This allows the hot plate assembly 5 to clamp and release the specimen more stably, facilitating the testing of the specimen.

[0027] like Figure 1 As shown, the lifting wire rope 3 is wound around the pulley assembly 2.

[0028] When in use, the lifting wire rope 3 passes through the pulley assembly 2 on the top beam 11 and engages with the track on the pulley assembly 2, so that the electric cylinder 1 can adjust the height of the lifting frame 4 by pulling the lifting wire rope 3. The pulley in the pulley assembly 2 is easy to rotate, which helps to reduce the damage caused by friction between the lifting wire rope 3 and the pulley when it is pulled.

[0029] like Figure 1As shown, multiple sets of linear bearings 6 are evenly distributed around the outer periphery of the lifting frame 4.

[0030] During use, the linear bearings 6, which are evenly distributed around the outer periphery of the lifting frame 4, can engage with the multiple sets of guide shafts 7 on the frame 8, thereby providing auxiliary limit for the lifting of the lifting frame 4 and enabling the lifting frame 4 to perform lifting displacement movements more smoothly.

[0031] The working principle and usage process of this utility model are as follows: In use, first, install the corresponding structural components in suitable positions. During the use of the lifting mechanism of the thermal conductivity meter, the controller can operate the electric cylinder 1 and conveniently pull the lifting frame 4 via the lifting wire rope 3. This causes the lifting frame 4 to move the hot plate assembly 5 inside the frame 8 up and down, facilitating the clamping and loosening of the specimen. Linear bearings 6 are installed on both sides of the lifting frame 4. The linear bearings 6 move linearly along the guide shafts 7 fixed on the left and right sides of the outer periphery of the frame 4, thus preventing the hot plate assembly 5 from swaying left and right during lifting, allowing the thermal conductivity meter to be used more stably. The crossbeam 9 on the frame 8 provides support for the guide shafts 7. When the lifting frame 4 moves the hot plate assembly 5 up and down, it can drive multiple sets of linear bearings 6 to slide along the guide shafts 7, thereby improving the stability of the hot plate assembly 5 during up and down movement. This allows the hot plate assembly 5 to clamp and loosen the specimen more stably, facilitating specimen testing.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting mechanism for a thermal conductivity measuring instrument, characterized in that, The device includes a frame (8) and a lifting wire rope (3). An electric cylinder (1) for adjustment is bolted to the inside of the frame (8), and a top beam (11) for support is bolted to the top surface of the frame (8). A pulley assembly (2) is provided on the bottom surface of the top beam (11), and a hot plate assembly (5) is provided on the inside of the frame (8). A lifting frame (4) for hoisting is bolted to the top surface of the hot plate assembly (5), and the lifting wire rope (3) passes through the cable groove of the top clamping block A and clamping block B of the lifting frame (4) and is connected to the power output end of the electric cylinder (1).

2. The lifting mechanism of the thermal conductivity measuring instrument according to claim 1, characterized in that, The outer side walls of the frame (8) are equipped with crossbeams (9) for auxiliary support, and there are two sets of crossbeams (9). The outer wall surface of the crossbeams (9) is equipped with lugs (10), and there are two sets of lugs (10). A guide shaft (7) for limiting is installed between the two sets of lugs (10). The outer surface of the lifting frame (4) is equipped with linear bearings (6) that match the guide shafts (7), and there are multiple sets of linear bearings (6).

3. The lifting mechanism of the thermal conductivity measuring instrument according to claim 1, characterized in that, The lifting wire rope (3) is wound around the pulley assembly (2).

4. The lifting mechanism of a thermal conductivity measuring instrument according to claim 2, characterized in that, Multiple sets of linear bearings (6) are evenly distributed on the outer periphery of the lifting frame (4).

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