Clamp for replacing sleeve at high temperature

Abstract

A clamp for replacing a lower sleeve at a high temperature comprises a main rod, an adjusting sleeve rod and a clamp part, the adjusting sleeve rod is arranged on the main rod in a sleeving mode and can be adjusted up and down along the main rod, the clamp part is connected to the adjusting sleeve rod, and the clamp part comprises an upper installation base, a clamp upper arm, a clamp lower arm and a lower installation base which are sequentially hinged. Clamp plates used for abutting against the inner wall of a sleeve are hinged to the hinged positions of the clamp upper arms and the clamp lower arms at the same time, and at least two clamp upper arms, at least two clamp lower arms and at least two clamp plates are hinged one to one; the upper mounting base is connected to the lower end of the adjusting sleeve rod so as to move up and down along with the adjusting sleeve rod, and then the clamping pipe diameter of the clamp part can be adjusted. According to the clamp for replacing the sleeve at the high temperature, the clamp part is of a structure of which the opening degree can be dynamically adjusted, so that the sleeve can be conveniently mounted and dismounted, the sleeve can be quickly and conveniently replaced in a high-temperature environment, the production stagnation time is shortened, the working risk of operators is reduced, and the working efficiency and the safety are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of glass substrate production, and particularly relates to a fixture for replacing a sleeve at high temperature. Background Art

[0002] In the current glass substrate production industry, muffle furnaces are very commonly used. During the operation of a muffle furnace, a silicon carbide sleeve is generally sleeved outside a top heat source silicon carbide rod to achieve a heat equalization effect. However, due to reasons such as high temperature and erosion, these silicon carbide sleeves occasionally get damaged and need to be replaced. In the prior art, there is no special fixture for replacing silicon carbide sleeves in high-temperature industrial equipment. Usually, workers use common mechanical tools such as hand-held pliers for replacement. Such operations are not only time-consuming but also dangerous, hindering the improvement of production efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a fixture for replacing a sleeve at high temperature to safely and quickly disassemble and assemble the sleeve in a high-temperature environment.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] The utility model provides a fixture for replacing a sleeve at high temperature, which includes a main rod, an adjusting sleeve rod sleeved on the main rod and adjustable up and down along the main rod, and a fixture part connected to the adjusting sleeve rod. The fixture part includes an upper mounting seat, a fixture upper arm, a fixture lower arm, and a lower mounting seat that are sequentially hinged. And a fixture plate for tightly pressing against the inner wall of the sleeve is simultaneously hinged at the hinged part of the fixture upper arm and the fixture lower arm. There are at least two of the fixture upper arm, the fixture lower arm, and the fixture plate that are hinged one by one. The upper mounting seat is connected to the lower end of the adjusting sleeve rod to move up and down with the adjusting sleeve rod, thereby adjusting the clamping pipe diameter of the fixture part.

[0006] In one embodiment, an external thread is provided on the outer surface of the main rod, and an internal thread corresponding to the external thread is provided on the inner surface of the adjusting sleeve rod. The adjusting sleeve rod is threadedly connected to the main rod to adjust up and down along the main rod.

[0007] In one embodiment, the lower mounting seat of the fixture part is fixedly connected to the lower end of the main rod, and the upper mounting seat is rotatably sleeved on the lower end of the adjusting sleeve rod to rotate relative to the adjusting sleeve rod when the adjusting sleeve rod rotates and adjusts.

[0008] In one embodiment, the upper mounting seat of the fixture part is fixedly connected to the lower end of the adjusting sleeve rod, and the lower mounting seat is rotatably sleeved on the main rod and is immovable along the length direction of the main rod, so as to keep the lower mounting seat rotating relative to the main rod when the upper mounting seat rotates and adjusts along with the adjusting sleeve rod.

[0009] In one embodiment, an inverted tooth structure for increasing the static friction force is convexly provided on the surface of the fixture plate facing the inner wall of the sleeve.

[0010] In one embodiment, an arc chamfer is formed on the circumference of the bottom of the main rod relative to the inner wall of the sleeve.

[0011] In one embodiment, the fixture part includes three fixture upper arms, three fixture lower arms and three fixture plates, and the fixture upper arms, the fixture lower arms and the fixture plates are hinged one by one.

[0012] In one embodiment, the three fixture upper arms are evenly spaced and hinged to the upper mounting seat, and the three fixture lower arms are evenly spaced and hinged to the lower mounting seat.

[0013] In one embodiment, a heat insulation handle is provided on the main rod above the external thread.

[0014] In one embodiment, the main rod, the adjusting sleeve rod and the fixture part are all made of high-temperature resistant metal materials.

[0015] Compared with the prior art, the fixture for replacing the sleeve at high temperature of the present utility model includes a main rod, an adjusting sleeve rod that can be adjusted up and down along the main rod, and a fixture part connected to the adjusting sleeve rod. The fixture part includes an upper mounting seat, a fixture upper arm, a fixture lower arm and a lower mounting seat that are sequentially hinged, and a fixture plate is simultaneously hinged at the hinge joint of the fixture upper arm and the fixture lower arm. By adjusting the up and down movement of the adjusting sleeve rod to adjust the up and down movement of the upper mounting seat, the hinge angle between the fixture upper arm and the fixture lower arm can be adjusted, and further the opening and closing degree of the fixture part can be adjusted, so that the clamping diameter of each fixture plate matches the inner diameter size of the sleeve. The fixture part is a clamping structure with a dynamically adjustable opening and closing degree, which is convenient for the installation and disassembly of the sleeve. In a high-temperature environment, the sleeve can be quickly and conveniently replaced, the production stagnation time is reduced, the working risk of the operator is reduced, and the working efficiency and safety are improved. Moreover, the inverted tooth structure on the surface of the fixture plate can generate static friction force with the inner wall of the sleeve to achieve stable clamping, meeting the clamping requirements of the sleeve in a high-temperature environment and with a specific shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a fixture for replacing a sleeve at high temperature according to an embodiment of the present utility model;

[0017] Figure 2 isFigure 1 Perspective structure diagram of clamping a casing with a fixture for casing replacement at high temperatures shown

[0018] Figure 3 is Figure 2 Structure schematic diagram of the shown structure from the front view angle

[0019] Figure 4 is Figure 2 Structure schematic diagram of the shown structure from the top view angle

[0020] Figure 5 is Figure 3 Structural sectional view in the A - A direction in

[0021] Figure 6 is Figure 5 Enlarged structure diagram at position B in

[0022] Figure 7 is Figure 5 Enlarged structure diagram at position C in

[0023] Figure 8 is Figure 1 Structure schematic diagram of the fixture for casing replacement at high temperatures shown when used on the muffle furnace body

[0024] Explanation of reference numerals: 1 main rod, 11 external thread, 12 arc chamfer, 13 heat - insulating handle, 2 adjusting sleeve rod, 21 internal thread, 22 adjusting nut, 3 fixture part, 31 upper mounting seat, 32 upper fixture arm, 33 lower fixture arm, 34 lower mounting seat, 35 fixture plate, 36 reverse - tooth structure, 4 silicon carbide casing, 5 muffle furnace body Detailed implementation manners

[0025] With reference to Figures 1-8, this embodiment provides a fixture for replacing a sleeve at high temperature, which is used for replacing the silicon carbide sleeve on the muffle furnace body. The overall design is made of high-temperature resistant metal materials, including a main rod 1, an adjusting sleeve rod 2 sleeved on the main rod 1 and capable of adjusting up and down along the main rod 1, and a fixture part 3 connected to the adjusting sleeve rod 2. An arc chamfer 12 is formed on the circumference of the bottom of the main rod 1 relative to the inner wall of the sleeve. The end of the lower end of the main rod 1 is made into an arc chamfer 12, which can avoid secondary damage to the sleeve caused by the sharp bottom end. An insulating handle 13 for easy hand operation is provided above the external thread 11 on the main rod 1. The screw rod section of the main rod 1 is provided with an external thread 11, and the inner surface of the adjusting sleeve rod 2 is correspondingly provided with an internal thread 21 corresponding to the external thread 11. The adjusting sleeve rod 2 is threadedly connected to the main rod 1 to adjust up and down along the main rod 1. To facilitate the rotation of the adjusting sleeve rod 2, a adjusting nut 22 protrudes from the top of the adjusting sleeve rod 2, and the internal thread 21 is correspondingly arranged on the inner surface of the adjusting nut 22. The adjusting nut 22 is threadedly connected to the screw rod section of the main rod 1. The fixture part 3 includes an upper mounting seat 31, a fixture upper arm 32, a fixture lower arm 33, and a lower mounting seat 34 that are sequentially hinged. And a fixture plate 35 for pressing against the inner wall of the sleeve is simultaneously hinged at the hinge joint of the fixture upper arm 32 and the fixture lower arm 33. A reverse tooth structure 36 for increasing the static friction force protrudes from the surface of the fixture plate 35 facing the inner wall of the sleeve. The fixture upper arm 32, the fixture lower arm 33, and the fixture plate 35 are hinged one by one through a hinge shaft. The movement of the fixture plate 35 is controlled by the movement of the fixture upper arm 33 and the fixture lower arm 34. As Figure 6 shown, the upper mounting seat 31 is rotatably sleeved on the lower end of the adjusting sleeve rod 2 to keep rotating relative to the adjusting sleeve rod 2 when the adjusting sleeve rod 2 rotates and adjusts. The lower mounting seat 34 of the fixture part 3 is fixedly connected to the lower end of the main rod 1. The fixture part 3 is a clamping structure that can be dynamically adjusted. The upper mounting seat 31 moves up and down with the adjusting sleeve rod 2, and then the opening and closing degree of the fixture part 3 can be adjusted to make the clamping diameter of each fixture plate 35 match the inner diameter size of the sleeve. Then, static friction is generated between the reverse tooth structure 36 on the surface of the fixture plate 35 and the inner wall of the sleeve to achieve stable clamping, so as to facilitate the installation and disassembly of the sleeve.

[0026] In this embodiment, the fixture part 3 includes three fixture upper arms 32, three fixture lower arms 33, and three fixture plates 35. The fixture upper arms 32, the fixture lower arms 33, and the fixture plates 35 are hinged one by one. The three fixture upper arms 32 are evenly spaced and hinged to the upper mounting seat 31, and the three fixture lower arms 33 are evenly spaced and hinged to the lower mounting seat 34. When replacing the silicon carbide sleeve 4 using the fixture of this embodiment, first rotate the adjusting nut 22 upward so that the diameter of the circle formed by the three fixture plates 35 is smaller than the inner diameter of the silicon carbide sleeve 4. Place the fixture part 3 into the inner cavity of the silicon carbide sleeve 4, and then rotate the adjusting nut 22 downward to expand the three fixture plates 35 outward until the fixture plates 35 contact the inner wall of the silicon carbide sleeve 4 and transmit pressure. A static friction force is generated between the inverted tooth structure 36 and the inner wall of the silicon carbide sleeve 4. Lift it through the heat-insulating handle 13 of the fixture, and the silicon carbide sleeve 4 can be smoothly taken out from the muffle furnace body 5, and then a new silicon carbide sleeve 4 is replaced.

[0027] In other embodiments, it can also be that the upper mounting seat 31 of the fixture part 3 is fixedly connected to the lower end of the adjusting sleeve rod 2, and the lower mounting seat 34 is rotatably sleeved on the main rod 1 and cannot move along the length direction of the main rod 1, so as to keep the lower mounting seat 34 rotating relative to the main rod 1 when the upper mounting seat 31 rotates and adjusts with the adjusting sleeve rod 2.

[0028] The fixture for replacing the sleeve at high temperature of the present utility model includes a main rod, an adjusting sleeve rod that can be adjusted up and down along the main rod, and a fixture part connected to the adjusting sleeve rod. The fixture part includes an upper mounting seat, a fixture upper arm, a fixture lower arm, and a lower mounting seat that are sequentially hinged. And a fixture plate is simultaneously hinged at the hinged part of the fixture upper arm and the fixture lower arm. By moving the adjusting sleeve rod up and down to adjust the up and down movement of the upper mounting seat, the hinged angle between the fixture upper arm and the fixture lower arm can be adjusted, and then the opening and closing degree of the fixture part can be adjusted, so that the clamping diameter of each fixture plate matches the inner diameter size of the sleeve. The fixture part is a clamping structure with a dynamically adjustable opening and closing degree, which is convenient for the installation and disassembly of the sleeve. In a high-temperature environment, the sleeve can be replaced quickly and conveniently, reducing the production downtime, reducing the working risk of the operator, and improving the work efficiency and safety. Moreover, the inverted tooth structure on the surface of the fixture plate can generate a static friction force with the inner wall of the sleeve to achieve stable clamping, meeting the clamping requirements of the sleeve in a high-temperature environment and a specific shape.

[0029] Those of ordinary skill in the art should understand that: The discussion of any above embodiment is only exemplary, and is not intended to imply that the protection scope of the present application is limited to these examples; Under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of one or more embodiments of the present application as described above, and they are not provided in detail for the sake of brevity.

[0030] One or more embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application shall be included within the protection scope of the present application.

Claims

1. A clamp for replacing casing at high temperature, characterized in that: The invention comprises a main rod (1), an adjusting sleeve rod (2) sleeved on the main rod (1) and adjustable up and down along the main rod (1), and a clamp part (3) connected to the adjusting sleeve rod (2); the clamp part (3) comprises an upper mounting seat (31), a clamp upper arm (32), a clamp lower arm (33), and a lower mounting seat (34) which are hinged in sequence; a clamp plate (35) for pressing against the inner wall of a sleeve is hinged at the hinged joint of the clamp upper arm (32) and the clamp lower arm (33); the clamp upper arm (32), the clamp lower arm (33), and the clamp plate (35) are hinged one-to-one and each has at least two clamp plates; the upper mounting seat (31) is connected to the lower end of the adjusting sleeve rod (2) so as to move up and down with the adjusting sleeve rod (2) so as to adjust the clamping diameter of the pipe by the clamp part (3).

2. The high temperature casing replacement fixture according to claim 1, characterized in that: The outer surface of the main rod (1) is provided with an external thread (11), and the inner surface of the adjustment sleeve rod (2) is provided with an internal thread (21) corresponding to the external thread (11). The adjustment sleeve rod (2) is threadedly connected to the main rod (1) so as to be adjusted up and down along the main rod (1).

3. The high temperature casing replacement fixture according to claim 2, characterized in that: The lower mounting seat (34) of the clamp portion (3) is fixedly connected to the lower end of the main rod (1), and the upper mounting seat (31) is rotatably sleeved on the lower end of the adjustment sleeve rod (2) so as to maintain rotation relative to the adjustment sleeve rod (2) when the adjustment sleeve rod (2) is rotated for adjustment.

4. The high temperature casing replacement fixture according to claim 2, characterized in that: The upper mounting seat (31) of the clamp portion (3) is fixedly connected to the lower end of the adjustment sleeve rod (2), and the lower mounting seat (34) is rotatably sleeved on the main rod (1) and cannot be moved along the length direction of the main rod (1), so as to keep the lower mounting seat (34) rotating relative to the main rod (1) when the upper mounting seat (31) rotates and adjusts with the adjustment sleeve rod (2).

5. The high temperature casing replacement fixture according to any one of claims 1 to 4, characterized in that: An inverted tooth structure (36) for increasing static friction is convexly provided on the surface of the clamp plate (35) facing the inner wall of the sleeve.

6. The high temperature casing replacement fixture according to any one of claims 1 to 4, characterized in that: The bottom of the main rod (1) forms an arc-shaped chamfer (12) relative to the inner wall of the sleeve.

7. The high temperature casing replacement fixture according to any one of claims 1 to 4, characterized in that: The clamp portion (3) comprises three clamp upper arms (32), three clamp lower arms (33) and three clamp plates (35), and the clamp upper arms (32), the clamp lower arms (33) and the clamp plates (35) are hinged one to one.

8. The high temperature casing replacement fixture according to claim 7, characterized in that: The three clamp upper arms (32) are evenly spaced and hinged to the upper mounting seat (31), and the three clamp lower arms (33) are evenly spaced and hinged to the lower mounting seat (34).

9. The high temperature casing replacement fixture according to any one of claims 2 to 4, characterized in that: A heat-insulating handle (13) is provided on the main rod (1) above the external thread (11).

10. The high temperature casing replacement fixture according to any one of claims 1 to 4, characterized in that: The main rod (1), the adjustment sleeve rod (2) and the clamp portion (3) are all made of high temperature resistant metal material.

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