Heat-resistant clamp suitable for high-temperature environment
By using the workbench assembly and clamping assembly in a high-temperature environment, combined with the electric telescopic rod and resistance wire current detection, precise clamping of the workpiece is achieved, solving the problems of unstable clamping and damage, and improving the applicability and reliability of the fixture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-17
AI Technical Summary
In high-temperature environments, the expansion of the workpiece is difficult to control through material selection, making it difficult to accurately control the clamping force, which may lead to unstable clamping or workpiece damage.
It employs a worktable assembly, a moving assembly, and a clamping assembly, including a high-temperature alloy clamping plate, an electric telescopic rod, a resistance wire, and an integrated controller. It detects the clamping force through changes in current and controls the temperature with a cooler to achieve precise clamping.
It achieves precise clamping of high-temperature workpieces, prevents damage from over-clamping, and improves the stability and versatility of the fixture, making it suitable for workpieces of various materials and expansion characteristics.
Smart Images
Figure CN223998236U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, specifically a heat-resistant clamp suitable for high-temperature environments. Background Technology
[0002] Heat-resistant fixtures suitable for high-temperature environments are devices specifically designed to fix and support samples or workpieces under high-temperature conditions. They can maintain structural stability and mechanical properties at extreme temperatures, while preventing oxidation or deformation of the sample during high-temperature testing. These fixtures are widely used in material mechanical property testing, high-temperature experiments, and high-temperature process operations in industrial production, such as high-temperature creep tests and high-temperature shear tests.
[0003] In high-temperature environments, both the fixture and the workpiece undergo thermal expansion. To ensure the stability and reliability of the fixture under high-temperature conditions, existing technologies achieve anti-expansion effects by changing the material of the fixture. For example, high-temperature alloys and ceramics are used. High-temperature alloys such as GH4169 and GH4049 have low coefficients of thermal expansion and good mechanical properties. Taking GH5605 high-temperature alloy as an example, its coefficient of linear expansion in the range of 20℃ to 800℃ is approximately 0.0 × 10⁻⁻⁻⁶. 6 / ℃, while ceramic materials have a lower coefficient of thermal expansion and excellent high-temperature resistance. For example, when a 1600℃ high-temperature ceramic fixture is used in a high-temperature environment, it has very little thermal expansion and does not oxidize, and its performance is stable.
[0004] However, the expansion of a workpiece is difficult to control through material selection like that of a fixture. The material of a workpiece is usually determined by its usage requirements, and the thermal expansion is more complex. If an expanded workpiece is clamped in a high-temperature environment, the clamping force is difficult to control precisely, which can lead to unstable clamping or even damage to the workpiece. Therefore, a heat-resistant fixture suitable for high-temperature environments is proposed to address the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a heat-resistant clamp suitable for high-temperature environments, so as to solve the problem that if an expanded workpiece is clamped in a high-temperature environment, it is difficult to accurately control the clamping force, which will lead to unstable clamping or even damage to the workpiece.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A heat-resistant clamp suitable for high-temperature environments includes a worktable assembly. A moving component is mounted on the upper end of the worktable assembly, and a clamping component is mounted inside the moving component. The moving component includes a work box, a dovetail rail is fixedly connected to the bottom end of the work box, and a push plate is fixedly connected to the bottom end of the dovetail rail. A slide rail is provided inside the work box, and a resistance wire is fixedly connected inside the work box. The clamping component includes a high-temperature alloy clamping plate, a high-temperature alloy slider is fixedly connected to one side of the high-temperature alloy clamping plate, a high-temperature alloy connecting block is fixedly connected to the side of the high-temperature alloy slider away from the high-temperature alloy clamping plate, a flexible wire is fixedly connected inside the high-temperature alloy connecting block, an electrical contact is fixedly connected to the bottom end of the high-temperature alloy connecting block, and a spring is fixedly connected to the end of the high-temperature alloy connecting block away from the high-temperature alloy slider. One end of the spring is fixedly connected to the inside of the slide rail.
[0008] As a further optimization of this utility model, the workbench assembly includes a work shell with a hollow inner side. An electric telescopic rod, an integrated controller, and a cooler are fixedly connected to the inner side of the work shell, and the electric telescopic rod is electrically connected to the integrated controller.
[0009] As a further optimization of this utility model, the upper end of the working shell is provided with a guide rail groove, the dovetail rail is slidably connected to the inner side of the guide rail groove, and the push plate is fixedly connected to the piston rod end of the electric telescopic rod by bolts.
[0010] As a further optimization of this utility model, the working shell is provided with a wire-passing hole near the resistance wire and the flexible wire, and the flexible wire and the resistance wire are electrically connected to the integrated controller through the wire-passing hole of the working shell.
[0011] As a further optimization of this utility model, the following features are provided: a shaft is fixedly connected to the inner side of the working box; the shaft of the working box is fixedly connected to the inner side of the ball bearing; and the outer side of the ball bearing is in contact with the outer side of the high-temperature alloy slider.
[0012] As a further optimization of this utility model, the slide rail extends through one end of the work box, the high-temperature alloy slider is embedded inside the slide rail, and the high-temperature alloy clamping plate is located on the outside of the work box.
[0013] As a further optimization of this utility model, the flexible wire is electrically connected to the electrical contact head, the electrical contact head and the flexible wire are located at the upper end of the resistance wire, the bottom end of the electrical contact head is in contact with the top end of the resistance wire, the electrical contact head is electrically connected to the resistance wire, and both the flexible wire and the resistance wire are fixedly connected inside the working box.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this invention, the device can precisely control the clamping force of workpieces that are expanded by high temperature by setting up a worktable assembly, a moving assembly, and a clamping assembly, effectively preventing damage to the workpieces due to over-clamping, while ensuring the stability of clamping. This clamping method can adapt to workpieces of various materials and expansion characteristics, greatly improving the versatility and applicability of the device, and is especially suitable for fixing and supporting complex workpieces in high temperature environments. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the working shell of this utility model;
[0018] Figure 3 This is a schematic diagram of the electric telescopic pole structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the push plate structure of this utility model;
[0020] Figure 5 This is a cross-sectional structural diagram of the working box of this utility model;
[0021] Figure 6 This is a schematic diagram of the clamping component structure of this utility model;
[0022] Figure 7 This is a cross-sectional structural diagram of the high-temperature alloy connecting block of this utility model;
[0023] Figure 8 This is a schematic diagram of the structure of the refrigerator of this utility model.
[0024] In the diagram: 1. Workbench assembly; 11. Work housing; 12. Electric telescopic rod; 13. Integrated controller; 14. Cooler; 15. Guide rail groove;
[0025] 2. Moving component; 21. Working box; 22. Dovetail rail; 23. Push plate; 24. Slide rail; 25. Resistance wire; 26. Ball bearing;
[0026] 3. Clamping assembly; 31. High-temperature alloy clamping plate; 32. High-temperature alloy slider; 33. High-temperature alloy connecting block; 34. Flexible wire; 35. Electrical contact head; 36. Spring. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0029] Please see Figure 1-8 This utility model provides a technical solution:
[0030] A heat-resistant clamp suitable for high-temperature environments includes a workbench assembly 1, a moving assembly 2 mounted on the upper end of the workbench assembly 1, and a clamping assembly 3 mounted inside the moving assembly 2. The moving assembly 2 includes a work box 21, a dovetail rail 22 fixedly connected to the bottom end of the work box 21, a push plate 23 fixedly connected to the bottom end of the dovetail rail 22, a slide rail 24 opened inside the work box 21, and a resistance wire 25 fixedly connected inside the work box 21. The clamping assembly 3 includes a high-temperature alloy clamping plate 31, a high-temperature alloy slider 32 fixedly connected to one side of the high-temperature alloy clamping plate 31, a high-temperature alloy connecting block 33 fixedly connected to the side of the high-temperature alloy slider 32 away from the high-temperature alloy clamping plate 31, a flexible wire 34 fixedly connected inside the high-temperature alloy connecting block 33, an electrical contact head 35 fixedly connected to the bottom end of the high-temperature alloy connecting block 33, and a spring 36 fixedly connected to the end of the high-temperature alloy connecting block 33 away from the high-temperature alloy slider 32. One end of the spring 36 is fixedly connected to the inside of the slide rail 24.
[0031] As a further implementation of this solution, the workbench assembly 1 includes a work shell 11. The inner side of the work shell 11 is a hollow structure. An electric telescopic rod 12, an integrated controller 13, and a cooler 14 are fixedly connected to the inner side of the work shell 11. The electric telescopic rod 12 is electrically connected to the integrated controller 13. Through the above arrangement, the cooler 14 can control the working environment inside the work shell 11 and improve the safety of using the electric telescopic rod 12 and the integrated controller 13.
[0032] As a further implementation of this solution, the upper end of the working shell 11 is provided with a guide rail groove 15, and the dovetail rail 22 is slidably connected to the inner side of the guide rail groove 15. The push plate 23 is fixedly connected to the end of the piston rod of the electric telescopic rod 12 by bolts. Through the above settings, a stable track is provided to ensure that it will not deviate during movement. The bolt connection between the push plate 23 and the piston rod of the electric telescopic rod 12 is convenient for installation and disassembly, which improves the maintenance convenience of the fixture.
[0033] As a further implementation of this solution, the working shell 11 is provided with wire holes near the resistance wire 25 and the flexible wire 34. The flexible wire 34 and the resistance wire 25 are electrically connected to the integrated controller 13 through the wire holes of the working shell 11. Through the above settings, the stability and reliability of signal transmission are ensured. The integrated controller 13 can receive the workpiece clamping force in a timely manner, thereby controlling the start and stop of the electric telescopic rod 12.
[0034] As a further implementation of this solution, a shaft column is fixedly connected to the inner side of the work box 21. The shaft column of the work box 21 is fixedly connected to the inner side of the ball bearing 26. The outer side of the ball bearing 26 is in contact with the outer side of the high-temperature alloy slider 32. Through the above settings, it is ensured that it can run smoothly when rotating, reducing friction, improving the mechanical performance and service life of the fixture, and also ensuring the smoothness of the clamping process.
[0035] As a further implementation of this solution, the slide 24 passes through one end of the work box 21, the high-temperature alloy slider 32 is embedded inside the slide 24, the high-temperature alloy clamping plate 31 is located on the outside of the work box 21, the flexible wire 34 is electrically connected to the electrical contact head 35, the electrical contact head 35 and the flexible wire 34 are located at the upper end of the resistance wire 25, the bottom end of the electrical contact head 35 is in contact with the top end of the resistance wire 25, and the electrical contact head 35 is electrically connected to the resistance wire 25. The flexible wire 34 and the resistance wire 25 are both fixedly connected inside the work box 21. Through the above settings, this electrical connection method and structural layout make a stable electrical circuit formed between the flexible wire 34, the electrical contact head 35 and the resistance wire 25. By detecting the change in current or resistance, the clamping force can be precisely controlled, realizing the precise clamping of the workpiece and improving the applicability and reliability of the fixture.
[0036] Workflow: When clamping the workpiece, place the workpiece between the two clamping components 3. Activate the electric telescopic rod 12 to move the push plate 23 towards the workpiece. The push plate 23 moves the work box 21 via the dovetail rail 22. The dovetail rail 22 is slidably connected inside the guide rail groove 15. Both the dovetail rail 22 and the guide rail groove 15 are dovetail-shaped to prevent the dovetail rail 22 from detaching from the guide rail groove 15. Simultaneously, a sealing plate is fixed to the bottom of the guide rail groove 15. The length of the sealing plate is half that of the guide rail groove 15, so it does not obstruct the push plate 23. The movement of the workbox 21 causes the flexible wire 34 and resistance wire 25 to stretch to a certain extent. Both the flexible wire 34 and resistance wire 25 are flexible wires. The movement of the workbox 21 causes the clamping assembly 3 to move as a whole. When the high-temperature alloy clamping plate 31 contacts the workpiece, under the action of the reaction force, the high-temperature alloy slider 32 and the high-temperature alloy connecting block 33 move inwards towards the interior of the workbox 21. When the high-temperature alloy slider 32 moves, the ball bearing 26 rotates. The ball bearing 26 reduces the frictional force during the movement of the high-temperature alloy slider 32. The high-temperature alloy connecting block 33... 36. Under compression, the flexible wire 34 inside the working box 21 undergoes a certain deformation. After the spring 36 is compressed, the clamping force of the high-temperature alloy clamping plate 31 on the workpiece gradually increases. According to Hooke's Law, the length of the spring 36's contraction is proportional to the clamping force on the workpiece. When the high-temperature alloy connecting block 33 moves, it drives the electrical contact head 35 to move. The position of the electrical contact head 35 at the upper end of the resistance wire 25 changes continuously. An electrical circuit is formed between the integrated controller 13, the flexible wire 34, the electrical contact head 35, and the resistance wire 25. Under constant voltage, the electrical contact head 35... As the position of the moving resistance wire 25 changes, the current in this circuit will change. By detecting the current or resistance value of this circuit, the distance the high-temperature alloy clamping plate 31 moves can be determined, thereby controlling the clamping force on the workpiece. The cooler 14 cools the inside of the working shell 11. Based on the above principles, the device can accurately control the clamping force of the workpiece that is expanding due to high temperature, thereby preventing over-clamping from damaging the workpiece and ensuring the stability of the fixed clamping. This clamping method can adapt to the clamping control of various workpieces, improving the application range of the device.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A heat-resistant fixture suitable for high temperature environment comprising a worktable assembly (1), characterized in that: The workbench assembly (1) is provided with a moving assembly (2) at the upper end, and the moving assembly (2) is provided with a clamping assembly (3) at the inner side. The moving assembly (2) comprises a working box (21), the bottom end of the working box (21) is fixedly connected with a dovetail rail (22), the bottom end of the dovetail rail (22) is fixedly connected with a push plate (23), the inner side of the working box (21) is provided with a slide (24), and the inner side of the working box (21) is fixedly connected with a resistance wire (25). The clamping assembly (3) comprises a high-temperature alloy clamping plate (31), one side of the high-temperature alloy clamping plate (31) is fixedly connected with a high-temperature alloy sliding block (32), the side, away from the high-temperature alloy clamping plate (31), of the high-temperature alloy sliding block (32) is fixedly connected with a high-temperature alloy connecting block (33), the inner side of the high-temperature alloy connecting block (33) is fixedly connected with a flexible wire (34), the bottom end of the high-temperature alloy connecting block (33) is fixedly connected with an electric contact head (35), and the end, away from the high-temperature alloy sliding block (32), of the high-temperature alloy connecting block (33) is fixedly connected with a spring (36). One end of the spring (36) is fixedly connected to the inner side of the slide (24).
2. The heat-resistant clamp for use in a high-temperature environment according to claim 1, characterized by: The workbench assembly (1) comprises a working shell (11), the inner side of the working shell (11) is a hollow structure, the inner side of the working shell (11) is fixedly connected with an electric telescopic rod (12), an integrated controller (13) and a refrigerator (14), and the electric telescopic rod (12) is electrically connected with the integrated controller (13).
3. The heat-resistant clamp for use in a high-temperature environment according to claim 2, characterized by: The upper end of the working shell (11) is provided with a guide rail groove (15), the dovetail rail (22) is slidably connected to the inner side of the guide rail groove (15), and the push plate (23) is fixedly connected with the piston rod end of the electric telescopic rod (12) through bolts.
4. The heat-resistant clamp for use in a high-temperature environment according to claim 2, characterized by: The working shell (11) is provided with a threading hole near the resistance wire (25) and the flexible wire (34), and the flexible wire (34) and the resistance wire (25) are electrically connected with the integrated controller (13) through the threading hole of the working shell (11).
5. The heat-resistant clamp for use in a high-temperature environment according to claim 1, characterized by: The inner side of the working box (21) is fixedly connected with a shaft column, the shaft column of the working box (21) is fixedly connected with the inner side of a ball bearing (26), and the outer side of the ball bearing (26) is attached to the outer side of the high-temperature alloy sliding block (32).
6. The heat-resistant clamp for use in a high-temperature environment according to claim 1, characterized by: The slide (24) penetrates one end of the working box (21), the high-temperature alloy sliding block (32) is embeddedly installed in the inner side of the slide (24), and the high-temperature alloy clamping plate (31) is located at the outer side of the working box (21).
7. The heat-resistant clamp for use in a high-temperature environment according to claim 1, characterized by: The flexible wire (34) is electrically connected with the electric contact head (35), the electric contact head (35) and the flexible wire (34) are located at the upper end of the resistance wire (25), the bottom end of the electric contact head (35) is attached to the top end of the resistance wire (25), the electric contact head (35) is electrically connected with the resistance wire (25), and the flexible wire (34) and the resistance wire (25) are fixedly connected in the inner side of the working box (21).