A thermomechanical analyzer test fixture

Abstract

The utility model relates to thermal analysis testing technical field, concretely relates to a thermal mechanical analyzer test fixture, including base, vertical column body and adjusting assembly, vertical column body passes through adjusting assembly and installs on the base, adjusting assembly includes guide sleeve, guide rod, lifting plate and lifting component, guide sleeve is fixedly connected with the base, and is located the side of base close to vertical column body, guide rod is fixedly connected with vertical column body, and is connected with guide sleeve slidingly, lifting plate extends into the base, and is connected with base slidingly, and with vertical column body fixedly connected, lifting component drives lifting plate to lift, solved the prior art because the different types banded sample's tensile capacity is different, and the left and right vertical column height of prior art is fixed, cannot adjust, difficult to satisfy the different types banded sample and carry out the tensile measurement, the applicability is poor problem.

Description

Technical Field

[0001] This utility model relates to the field of thermal analysis testing technology, and in particular to a test fixture for a thermomechanical analyzer. Background Technology

[0002] A thermomechanical analyzer (TMA) is an instrument used to measure the changes in the physical properties of materials under programmed temperature control. During TMA analysis, test fixtures are used to fix and support the sample, ensuring its stability during testing and accurate measurement of its thermomechanical properties. Commercial TMAs are equipped with different probes and stages to adapt to different testing scenarios. Specifically, the probes and stages for measuring sample tension and compression are different, requiring a separate set to complete both tests, and these sets need to be changed during testing. More importantly, a set of probes and stages is very expensive.

[0003] Existing technology CN221100275U discloses a fixture for a thermomechanical analyzer, including a base, a pressure block, and two clamping blocks. The upper ends of the left and right vertical columns of the U-shaped base are arc surfaces of the same diameter; the axis of the arc surface is in the front-back direction; the curvature of the arc surface is greater than 180°; W≤D, where D is the diameter of the arc surface and W is the left and right widths at the lower ends of the left and right vertical columns; the pressure block is semi-cylindrical; 0.8S≤d≤S, where d is the diameter of the semi-cylindrical shape and S is the minimum distance between the two arc surfaces at the upper ends of the left and right vertical columns; the two clamping blocks are used to install and fix the two ends of the strip sample to the left and right ends of the bottom horizontal column, respectively. This utility model enables the probe and sample stage of the thermomechanical analyzer to measure the compression of strip samples, thereby reducing equipment costs and replacement frequency, and improving the accuracy of measurement results.

[0004] Regarding the aforementioned fixtures for thermomechanical analyzers, since different types of strip samples have different tensile strengths, and the heights of the left and right vertical columns in the existing technology are fixed and cannot be adjusted, it is difficult to meet the tensile measurement requirements of different types of strip samples, resulting in poor applicability. Utility Model Content

[0005] The purpose of this invention is to provide a test fixture for a thermomechanical analyzer, which solves the problem that the existing technology has poor applicability because the tensile strength of different types of strip samples varies, and the height of the left and right vertical columns in the existing technology is fixed and cannot be adjusted, making it difficult to meet the tensile measurement needs of different types of strip samples.

[0006] To achieve the above objectives, this utility model provides a test fixture for a thermomechanical analyzer, including a base, a vertical column body, and an adjustment assembly. The vertical column body is mounted on the base via the adjustment assembly. The adjustment assembly includes a guide sleeve, a guide rod, a lifting plate, and a lifting component. The guide sleeve is fixedly connected to the base and located on the side of the base near the vertical column body. The guide rod is fixedly connected to the vertical column body and slidably connected to the guide sleeve. The lifting plate extends into the base and is slidably connected to the base, and is fixedly connected to the vertical column body. The lifting component drives the lifting plate to move up and down.

[0007] The lifting component includes a toothed plate, a gear, and a control unit. The toothed plate is fixedly connected to the lifting plate and is located on one side of the lifting plate. The gear is installed in the base through the control unit and meshes with the toothed plate. The control unit is installed on the base and controls the rotation of the gear.

[0008] The control unit includes a linkage rod and a driving component. The linkage rod is rotatably connected to the base and fixedly connected to the gear. The driving component drives the linkage rod to rotate.

[0009] The driving component includes a worm gear, a worm, and a handwheel. The worm gear is sleeved on the outside of the linkage rod and is fixedly connected to the linkage rod. The worm is rotatably connected to the base and meshes with the worm gear. The handwheel is fixedly connected to the worm and is located at the end of the worm.

[0010] The base has a sliding groove located on the side of the base near the lifting plate; the lifting plate has a protrusion that engages with the sliding groove.

[0011] This utility model discloses a test fixture for a thermomechanical analyzer, comprising a base, a vertical column body, and an adjustment assembly. The vertical column body is mounted on the base via the adjustment assembly. The adjustment assembly includes a guide sleeve, a guide rod, a lifting plate, and a lifting component. The guide sleeve is fixedly connected to the base and located on the side of the base closest to the vertical column body. The guide rod is fixedly connected to the vertical column body and slidably connected to the guide sleeve. The lifting plate extends into the base and slidably connects to the base, while being fixedly connected to the vertical column body. The lifting component drives the lifting plate to rise and fall. This invention solves the problem in existing technologies where the left and right vertical column heights are fixed and cannot be adjusted due to the different tensile strengths of different types of strip samples, making it difficult to meet the tensile measurement needs of different types of strip samples and resulting in poor applicability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the thermomechanical analyzer test fixture of this utility model.

[0014] Figure 2 This is a structural schematic diagram of the lifting component of this utility model.

[0015] Figure 3 This is a schematic diagram of the toothed plate and gear of this utility model.

[0016] Figure 4 This is a structural schematic diagram of the driving component of this utility model.

[0017] Figure 5 This is a structural schematic diagram of the base and lifting plate of this utility model.

[0018] In the diagram: 101-base, 102-vertical column body, 103-guide sleeve, 104-guide rod, 105-through hole, 106-lifting plate, 107-tooth plate, 108-mounting cavity, 109-gear, 110-linkage rod, 111-worm gear, 112-worm, 113-handwheel, 114-sliding groove, 115-protrusion. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] The embodiment of this application is as follows:

[0021] Please see Figures 1-5 , Figure 1 This is a schematic diagram of the overall structure of the thermomechanical analyzer test fixture of this utility model. Figure 2 This is a structural schematic diagram of the lifting component of this utility model. Figure 3 This is a schematic diagram of the toothed plate 107 and gear 109 of this utility model. Figure 4 This is a structural schematic diagram of the driving component of this utility model. Figure 5 This is a structural schematic diagram of the base 101 and the lifting plate 106 of this utility model.

[0022] This utility model's thermomechanical analyzer test fixture includes a base 101, a vertical column body 102, a guide sleeve 103, a guide rod 104, a through hole 105, a lifting plate 106, a toothed plate 107, a mounting cavity 108, a gear 109, a linkage rod 110, a worm gear 111, a worm 112, a handwheel 113, a sliding groove 114, and a protrusion 115. It solves the problem of poor applicability in existing technologies where the left and right vertical column heights are fixed and cannot be adjusted due to the varying tensile strengths of different types of strip samples. It is understood that the aforementioned solution can also be used to improve flexibility.

[0023] In this embodiment, the base 101 is U-shaped, with clamps on the left and right sides for fixing the strip sample. The vertical column body 102 is a prior art, and there are two of them, located at both ends of the base 101. The specific structure refers to the prior art CN221100275U, a fixture for testing a thermomechanical analyzer. Through the adjustment component, the position and height of the vertical column body 102 can be flexibly adjusted, which solves the problem that the height of the left and right vertical columns in the prior art is fixed and cannot be adjusted due to the different tensile amounts of different types of strip samples, making it difficult to meet the tensile measurement needs of different types of strip samples and resulting in poor applicability.

[0024] The guide sleeve 103 is fixedly connected to the base 101 and located on the side of the base 101 near the vertical column body 102. The guide rod 104 is fixedly connected to the vertical column body 102 and slidably connected to the guide sleeve 103. The lifting plate 106 extends into the base 101 and is slidably connected to the base 101 and fixedly connected to the vertical column body 102. The lifting component drives the lifting plate 106 to rise and fall. There are eight guide rods 104, divided into two groups, which are vertically arranged around the two vertical column bodies 102. The number of guide sleeves 103 is the same as the number of guide rods 104, and they are correspondingly arranged on the base 101. The guide rods 104 pass through the guide sleeves 103 and are slidably connected to the guide sleeves 103. The guide rod 104 allows the two vertical column bodies 102 to move vertically on the base 101. Two lifting plates 106 are vertically installed at the bottom of the two vertical column bodies 102. Through holes 105 are provided at corresponding positions on the base 101 and the two lifting plates 106, allowing the lifting plates 106 to slide within the through holes 105. The lifting component drives the two lifting plates 106 to rise and fall synchronously. The rising and falling of the lifting plates 106, in turn, drives the vertical column bodies 102 to rise and fall, thus achieving height adjustment of the vertical column bodies 102. This solves the problem in the prior art where the left and right vertical column heights are fixed and cannot be adjusted due to the different tensile strengths of different types of strip samples, making it difficult to meet the tensile measurement needs of different types of strip samples and resulting in poor applicability.

[0025] Secondly, the toothed plate 107 is fixedly connected to the lifting plate 106 and is located on one side of the lifting plate 106; the gear 109 is installed in the base 101 through the control unit and meshes with the toothed plate 107. The control unit is installed on the base 101 and controls the rotation of the gear 109. There are two toothed plates 107, which are respectively installed on the two lifting plates 106. The base 101 has an installation cavity 108. There are two gears 109. The two gears 109 are installed in the installation cavity 108 of the base 101 through the control unit. The two gears 109 mesh with the two toothed plates 107 respectively. The control unit can control the two gears 109 to rotate synchronously. By driving the two gears 109 to rotate synchronously through the control unit, the two lifting plates 106 are driven to rise and fall synchronously, thereby realizing the height adjustment of the vertical column body 102.

[0026] Meanwhile, the linkage rod 110 is rotatably connected to the base 101 and fixedly connected to the gear 109; the driving component drives the linkage rod 110 to rotate, and the linkage rod 110 is horizontally installed in the base 101 through bearings. The two gears 109 are respectively sleeved at both ends of the linkage rod 110. The driving component can drive the linkage rod 110 to rotate, and at the same time, the linkage rod 110 has a self-locking function. Through the rotation of the linkage rod 110, the two gears 109 are driven to rotate synchronously.

[0027] In addition, the worm gear 111 is sleeved on the outside of the linkage rod 110 and fixedly connected to the linkage rod 110; the worm 112 is rotatably connected to the base 101 and meshes with the worm gear 111; the handwheel 113 is fixedly connected to the worm 112 and located at the end of the worm 112; the worm gear 111 is sleeved on the middle of the linkage rod 110; the worm 112 extends into the base 101 and is connected to the base 101 through a bearing; the handwheel 113 facilitates the rotation of the worm 112; by rotating the handwheel 113, the linkage rod 110 is driven to rotate under the transmission of the worm 112 and the worm gear 111. Through the transmission method of the worm 112 and the worm gear 111, self-locking can be achieved, improving stability.

[0028] Finally, the base 101 has a sliding groove 114, which is located on the side of the base 101 near the lifting plate 106; the lifting plate 106 has a protrusion 115, which cooperates with the sliding groove 114. The sliding groove 114 is opened along the length direction of the through hole 105 in the base 101, and the protrusion 115 is located on both sides of the lifting plate 106. Through the cooperation of the protrusion 115 and the sliding groove 114, the lifting plate 106 can slide within the base 101.

[0029] In this embodiment, when performing tensile measurements on strip samples with large stretching amounts, the positions of the two vertical column bodies 102 can be raised to provide a larger displacement space for the strip samples. When raising the vertical column bodies 102, the handwheel 113 is rotated clockwise. Under the transmission of the worm gear 112 and the worm wheel 111, the linkage rod 110 rotates. When the linkage rod 110 rotates, it drives the two gears 109 to rotate synchronously. The two toothed plates 107 mesh with the two gears 109, causing the two toothed plates 107 to move upward, thereby driving the two vertical column bodies 102 to rise. This achieves the adjustment of the position and height of the vertical column bodies 102, solving the problem that in the prior art, the left and right vertical column heights are fixed and cannot be adjusted due to the different stretching amounts of different types of strip samples, making it difficult to meet the tensile measurement needs of different types of strip samples and resulting in poor applicability.

[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A test fixture for a thermomechanical analyzer, comprising a base, characterized in that, It also includes an adjustment assembly and a vertical column body, the vertical column body being mounted on the base via the adjustment assembly; The adjustment assembly includes a guide sleeve, a guide rod, a lifting plate, and a lifting component. The guide sleeve is fixedly connected to the base and located on the side of the base near the vertical column body. The guide rod is fixedly connected to the vertical column body and slidably connected to the guide sleeve. The lifting plate extends into the base and is slidably connected to the base and fixedly connected to the vertical column body. The lifting component drives the lifting plate to rise and fall.

2. The thermomechanical analyzer test fixture as described in claim 1, characterized in that, The lifting component includes a toothed plate, a gear, and a control unit. The toothed plate is fixedly connected to the lifting plate and is located on one side of the lifting plate. The gear is installed in the base through the control unit and meshes with the toothed plate. The control unit is installed on the base and controls the rotation of the gear.

3. The thermomechanical analyzer test fixture as described in claim 2, characterized in that, The control unit includes a linkage rod and a driving component. The linkage rod is rotatably connected to the base and fixedly connected to the gear. The driving component drives the linkage rod to rotate.

4. The thermomechanical analyzer test fixture as described in claim 3, characterized in that, The driving component includes a worm gear, a worm, and a handwheel. The worm gear is sleeved on the outside of the linkage rod and is fixedly connected to the linkage rod. The worm is rotatably connected to the base and meshes with the worm gear. The handwheel is fixedly connected to the worm and is located at the end of the worm.

5. The thermomechanical analyzer test fixture as described in claim 1, characterized in that, The base has a sliding groove located on the side of the base near the lifting plate; the lifting plate has a protrusion that engages with the sliding groove.

Images