A glass tube incubator

Abstract

The utility model relates to glass tube production technical field especially relates to a glass tube heat preservation box, aims at solving the technical problem of in related art in part area opening heat dissipation, fixed structure sheltering leads to air circulation path is limited, thereby makes glass tube both sides heat dissipation uneven forms temperature difference and uneven temperature field, and then influences product consistency technical problem. The glass tube heat preservation box supports hollow frame, drives the protection board to cover or away from the frame through drive link set to switch heat preservation state or heat dissipation state. There is no fixed panel sheltering under the heat dissipation state, thereby provides the completely open air circulation path for glass tube, and then avoids the generation of uneven temperature field and glass tube temperature difference. Overcome the existing glass tube heat preservation box in part area opening heat dissipation, fixed structure sheltering leads to air circulation path is limited, thereby makes glass tube both sides heat dissipation uneven forms temperature difference and uneven temperature field, and then influences product consistency technical problem.

Description

Technical Field

[0001] This utility model relates to the field of glass tube production technology, and in particular to a glass tube insulation box. Background Technology

[0002] In the production of glass tube drawing raceways, insulated boxes are used to maintain the forming temperature of the glass tubes under normal production conditions. However, in special circumstances such as summer or when the ambient temperature is high, the surrounding temperature may be sufficient to meet production needs, eliminating the need for additional insulation. In these cases, operators will open the insulated box to regulate the internal temperature. The fixed structure of existing insulated boxes creates a large area of ​​obstruction in non-open areas, resulting in poor air circulation. This structure causes the glass tubes closer to the open areas to cool down faster, while the areas away from the open areas remain cooler due to poor heat dissipation, creating a significant temperature gradient. This disrupts the uniform thermal field required for glass tube production, thereby posing a risk to the consistency of glass tube forming quality and performance.

[0003] Existing glass tube insulation boxes have a technical problem: when some areas are opened for heat dissipation, the fixed structure blocks the airflow path, which restricts the airflow path. This results in uneven heat dissipation on both sides of the glass tube, creating temperature differences and an uneven temperature field, which in turn affects product consistency. Utility Model Content

[0004] The purpose of this utility model is to provide a glass tube insulation box to solve the technical problem in related technologies where, when heat dissipation is activated in some areas, the fixed structure blocks the airflow path, resulting in uneven heat dissipation on both sides of the glass tube, forming temperature differences and an uneven temperature field, which in turn affects product consistency.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] The glass tube insulated box provided by this utility model includes:

[0007] The system comprises a frame, multiple protective plates, and a drive linkage assembly. The frame is configured as a perforated frame, with a glass tube located inside the frame. The protective plates are mounted to the frame via the drive linkage assembly and can switch between a heat preservation state and a heat dissipation state. In the heat preservation state, the protective plates are evenly distributed around the frame and cover its outer perimeter, creating a closed, heat-preserving environment within the frame. In the heat dissipation state, the protective plates are flipped and moved away from the frame by the drive linkage assembly, completely opening the frame.

[0008] Specifically, the frame includes end plates and an inner support unit. The inner support unit includes a support beam and graphite wheels. The end plates are configured with a hollow structure. Each end of the support beam is connected to one of the end plates. At least two graphite wheels are evenly distributed along the length of the support beam and rotatably mounted on the support beam to support the glass tube.

[0009] Specifically, the end plate has a stepped annular groove. In the heat preservation state, the protective plate abuts against and fits into the stepped annular groove to achieve limiting support for the protective plate.

[0010] Specifically, the drive linkage assembly includes a first link and a second link. The two ends of the first link and the second link are respectively hinged to the end plate and the protective plate, forming a four-bar linkage. The second link is longer than the first link. The four-bar linkage changes the relative position of the protective plate and the end plate by the swinging of the first link and the second link, thereby causing the protective plate to move closer to or away from the frame, thus closing or opening the frame.

[0011] Specifically, the first connecting rod is configured as a folding arm connecting rod composed of a first member and a second member. In the heat-insulating state, the first member is flush with the stepped annular groove. The hinge point between the first connecting rod and the protective plate is located at a non-end position of the protective plate. The surface of the protective plate hinged to the first connecting rod is divided into a first limiting surface and a second limiting surface, with the hinge point as the boundary. In both the heat dissipation and heat-insulating states, the first member limits the travel of the protective plate by abutting against the first and second limiting surfaces, respectively.

[0012] Specifically, the drive linkage assembly further includes a synchronization unit, which comprises an internal gear ring rotatably connected to the end plate and a plurality of pinions. The pinions mesh with the internal gear ring and are connected to one end of the first connecting rod hinged to the end plate. The meshing transmission of the internal gear ring and each of the pinions drives each of the first connecting rods to swing synchronously, thereby causing each of the protective plates to switch between a heat dissipation state and a heat preservation state.

[0013] Specifically, it also includes a locking assembly, which includes a movable pawl with an extension rod rotatably connected to the end plate. The movable pawl can engage with the tooth groove of the internal toothed ring to lock the rotation of the internal toothed ring, thereby securing all the protective plates. The swinging of the movable pawl is used to lock or unlock the rotation of the internal toothed ring.

[0014] Specifically, a sliding rail is provided on the side of the movable claw away from the extension rod. The locking assembly also includes a reversing slider and a control handle. The end plate has a clearance groove, and the control handle is inserted into and seals the clearance groove. The reversing slider is slidably connected to the sliding rail and rotatably connected to the control handle. The sliding of the control handle along the clearance groove is used to drive the movable claw to swing through the reversing slider, thereby locking or unlocking the rotation of the internal gear ring.

[0015] Specifically, the frame further includes an external support unit, which comprises a support base, guide posts, a sliding sleeve, and a height adjustment screw. The guide posts and the sliding sleeve are respectively connected to the end plate and the support base. The guide posts are inserted into the sliding sleeve, and the height adjustment screw abuts against the end plate and is threadedly connected to the sliding sleeve. Rotation of the height adjustment screw around its own axis drives the end plate to move along the length of the sliding sleeve, thereby adjusting the height of the frame.

[0016] Specifically, an insulation layer is provided on the side of the protective plate connected to the drive linkage assembly to improve the insulation effect during insulation. A handle is also provided on the side of the protective plate away from the insulation layer for easy operation of the protective plate from the outside.

[0017] Based on the above technical solutions, the beneficial effects of this utility model are analyzed as follows:

[0018] This utility model provides a glass tube insulated box, comprising:

[0019] The system comprises a frame, multiple protective plates, and a drive linkage assembly. The frame is configured as a perforated frame, with a glass tube located inside the frame. The protective plates are mounted to the frame via the drive linkage assembly and can switch between a heat preservation state and a heat dissipation state. In the heat preservation state, the protective plates are evenly distributed around the frame and cover its outer perimeter, creating a closed, heat-preserving environment within the frame. In the heat dissipation state, the protective plates are flipped and moved away from the frame by the drive linkage assembly, completely opening the frame.

[0020] In practical applications, under heat preservation conditions, each of the protective plates covers the outer perimeter of the frame, forming a sealed heat preservation environment within the frame to insulate the glass tube. When the ambient temperature is high and heat preservation is no longer required, each of the protective plates flips and moves away from the frame under the action of the drive linkage assembly. Because the frame adopts a hollow frame structure and has no fixed panels obstructing it, it provides a completely open airflow path for the glass tube, thereby avoiding the generation of uneven temperature fields and temperature differences in the glass tube.

[0021] As can be seen, compared to existing technologies, this glass tube insulation box uses a perforated frame for support. The drive linkage group moves the protective plate to cover or move away from the frame to switch between insulation and heat dissipation states. In heat dissipation mode, there is no fixed panel obstructing the airflow, providing a completely open airflow path for the glass tube and thus avoiding uneven temperature fields and temperature differences within the glass tube. This overcomes the technical problem of existing glass tube insulation boxes where, when heat dissipation is activated in certain areas, the fixed structure obstructs the airflow path, leading to uneven heat dissipation on both sides of the glass tube, resulting in temperature differences and uneven temperature fields, which in turn affects product consistency. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the combined structure of the glass tube insulation box provided in multiple embodiments of this utility model under insulation conditions;

[0024] Figure 2 A schematic diagram of the combined structure of multiple glass tube insulation boxes in the heat dissipation state;

[0025] Figure 3 This is a schematic diagram of the glass tube insulation box under insulation conditions;

[0026] Figure 4 This is a schematic diagram of the glass tube insulation box in the heat dissipation state;

[0027] Figure 5 This is a partially enlarged structural diagram of the inner support unit under heat dissipation conditions;

[0028] Figure 6 for Figure 5 A partially enlarged structural diagram of the first connecting rod in the middle section;

[0029] Figure 7 This is a schematic diagram of the end plate structure under heat preservation conditions;

[0030] Figure 8 A schematic diagram of the structure when the locking component locks the internal gear ring;

[0031] Figure 9 A schematic diagram of the structure when the internal gear ring is unlocked for the locking component.

[0032] icon:

[0033] 001. Glass tube;

[0034] 100. Frame; 110. End plate; 101. Stepped annular groove; 120. Inner support unit; 121. Support beam; 122. Graphite wheel; 130. Outer support unit; 131. Support base; 132. Guide post; 133. Sliding sleeve; 134. Height adjustment screw;

[0035] 200. Protective panel; 201. Insulation layer; 202. Handle;

[0036] 300. Drive linkage assembly; 310. First linkage; 311. First member; 312. Second member; 320. Second linkage; 330. Synchronizing unit; 331. Internal gear ring; 332. Pinion;

[0037] 400 Locking assembly; 410 Movable pawl; 401 Extension rod; 402 Slide rail; 420 Reversing slider; 430 Operating handle. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Existing glass tube insulation boxes have a technical problem: when some areas are opened for heat dissipation, the fixed structure blocks the airflow path, which restricts the airflow path. This results in uneven heat dissipation on both sides of the glass tube, creating temperature differences and an uneven temperature field, which in turn affects product consistency.

[0042] In view of this, the present invention provides a glass tube insulated box, comprising:

[0043] The system comprises a frame 100, multiple protective plates 200, and a drive linkage assembly 300. The frame 100 is configured as a perforated frame, with a glass tube 001 located inside the frame 100. The protective plates 200 are mounted on the frame 100 via the drive linkage assembly 300 and can switch between heat preservation and heat dissipation states. In the heat preservation state, the protective plates 200 are evenly distributed around the frame 100 and cover its outer perimeter, creating a closed, heat-preserving environment within the frame 100. In the heat dissipation state, the protective plates 200 are flipped and moved away from the frame 100 by the drive linkage assembly 300, completely opening the frame 100.

[0044] Based on the above technical solutions, the glass tube insulated box provided by this utility model can achieve the following technical effects:

[0045] This glass tube insulation box is supported by a perforated frame 100. A drive linkage 300 moves a protective plate 200 to cover or move away from the frame 100, switching between insulation and heat dissipation modes. In heat dissipation mode, there is no fixed panel obstructing the airflow, providing a completely open airflow path for the glass tube 001, thus avoiding uneven temperature fields and temperature differences within the glass tube. This overcomes the technical problem of existing glass tube insulation boxes where, when heat dissipation is activated in certain areas, the fixed structure obstructs the airflow path, leading to uneven heat dissipation on both sides of the glass tube, resulting in temperature differences and an uneven temperature field, which in turn affects product consistency.

[0046] The following combination Figures 1 to 9 The structure and shape of the glass tube insulation box provided in this embodiment are described in detail below:

[0047] Regarding the structural composition of rack 100, specifically:

[0048] The frame 100 includes an end plate 110 and an inner support unit 120. The inner support unit 120 includes a support beam 121 and graphite wheels 122. The end plate 110 is configured with a hollow structure. The two ends of the support beam 121 are respectively connected to an end plate 110. At least two graphite wheels 122 are evenly distributed along the length of the support beam 121 and rotatably mounted on the support beam 121 to support the glass tube 001.

[0049] In order to improve the stability of the insulation structure composed of the protective plates 200 under the insulation state, in this embodiment, the end plate 110 is provided with a stepped annular groove 101. Under the insulation state, the protective plate 200 abuts against and fits into the stepped annular groove 101 to achieve limiting support for the protective plate 200.

[0050] Regarding the structural composition of the drive linkage assembly 300, specifically:

[0051] The drive linkage assembly 300 includes a first link 310 and a second link 320. The two ends of the first link 310 and the second link 320 are respectively hinged to the end plate 110 and the protective plate 200, forming a four-bar linkage. The second link 320 is longer than the first link 310. The four-bar linkage changes the relative position of the protective plate 200 and the end plate 110 by the swinging motion of the first link 310 and the second link 320, thereby causing the protective plate 200 to move closer to or further away from the frame 100, thus closing or opening the frame 100.

[0052] To limit the travel of the protective plate 200 under both heat preservation and heat dissipation conditions, and to improve the support stability of the protective plate 200, in this embodiment, the first connecting rod 310 is configured as a folding arm connecting rod composed of a first rod 311 and a second rod 312. In the heat preservation condition, the first rod 311 is flush with the stepped annular groove 101. The hinge point between the first connecting rod 310 and the protective plate 200 is located at a non-end position of the protective plate 200. The surface of the protective plate 200 hinged to the first connecting rod 310 is divided into a first limiting surface and a second limiting surface, with the hinge point as the boundary. In both heat dissipation and heat preservation conditions, the first rod 311 limits the travel of the protective plate 200 by abutting against the first and second limiting surfaces, respectively. The second connecting rod 320 is also configured as a folding arm connecting rod to avoid the internal toothed ring 331 in the heat preservation condition, while reducing the occupation of the central space of the frame 100 and avoiding interference with the transport of the glass tube 001. In the heat preservation state, the second connecting rod 320 abuts against the protective plate 200. The first connecting rod 310 and the second connecting rod 320 overlap with the protective plate 200 along the length of the frame 100.

[0053] To improve the operational efficiency of the protective plate 200, in this embodiment, the drive linkage assembly 300 further includes a synchronization unit 330. The synchronization unit 330 includes an internal gear ring 331 rotatably connected to the end plate 110 and a plurality of pinions 332. The pinions 332 mesh with the internal gear ring 331 and are hinged to one end of the first connecting rod 310 connected to the end plate 110. The meshing transmission of the internal gear ring 331 and each pinion 332 is used to drive each first connecting rod 310 to swing synchronously, thereby driving each protective plate 200 to switch between a heat dissipation state and a heat preservation state.

[0054] Regarding how the protective plate 200 avoids displacement under its own weight and remains in either an insulation or heat dissipation state, specifically:

[0055] The glass tube insulation box also includes a locking assembly 400, which includes a movable claw 410. The movable claw 410 is provided with an extension rod 401 rotatably connected to the end plate 110. The movable claw 410 can lock the rotation of the inner gear ring 331 by engaging with the tooth groove of the inner gear ring 331, thereby fixing all the protective plates 200. The swinging of the movable claw 410 is used to lock or unlock the rotation of the inner gear ring 331.

[0056] Regarding how the operator drives the movable jaw 410 to swing while avoiding damage to the airtight seal under the insulation condition, specifically:

[0057] A sliding rail 402 is also provided on the side of the movable jaw 410 away from the extension rod 401. The locking assembly 400 also includes a reversing slider 420 and an operating handle 430. The end plate 110 has a clearance groove, and the operating handle 430 is inserted into and seals the clearance groove. The reversing slider 420 is slidably connected to the sliding rail 402 and rotatably connected to the operating handle 430. The sliding of the operating handle 430 along the clearance groove is used to drive the movable jaw 410 to swing through the reversing slider 420, thereby locking or unlocking the rotation of the internal gear ring 331. The operating handle 430 achieves swing control of the movable jaw 410 by sliding, which is different from the traditional swing design. It avoids the need for additional clearance space for the swing structure, ensures that the operating handle 430 fits tightly with the clearance groove, achieves reliable sealing of the clearance groove, and maintains the integrity of the closed structure. The end of the operating handle 430 away from the reversing slider 420 can be provided as a button or handle for easy push and pull operation.

[0058] To adjust the height of the frame 100 to adapt to different production conditions, in this embodiment, the frame 100 further includes an external support unit 130. The external support unit 130 includes a support base 131, a guide post 132, a sliding sleeve 133, and a height adjustment screw 134. The guide post 132 and the sliding sleeve 133 are respectively connected to the end plate 110 and the support base 131. The guide post 132 is inserted into the sliding sleeve 133, and the height adjustment screw 134 abuts against the end plate 110 and is threadedly connected to the sliding sleeve 133. The rotation of the height adjustment screw 134 around its own axis drives the end plate 110 to move along the length of the sliding sleeve 133, thereby adjusting the height of the frame 100.

[0059] In this embodiment, an insulation layer 201 is provided on the side of the protective plate 200 connected to the drive linkage assembly 300 to improve the insulation effect under insulation conditions. A handle 202 is also provided on the side of the protective plate 200 away from the insulation layer 201 to facilitate operation of the protective plate 200 from the outside.

[0060] In this embodiment, multiple glass tube insulation boxes are sequentially joined together by end plates 110 along the length of the glass tube 001 to form a conveyor track surrounding the glass tube 001.

[0061] In summary, the specific working process of the glass tube insulation box provided in this embodiment is as follows:

[0062] Taking the initial state of the protective plate 200 being in a heat-insulating state and the movable claw 410 engaging with the tooth groove of the internal tooth ring 331 as an example.

[0063] Multiple glass tube insulation boxes are spliced ​​together in sequence and adjusted to the required height by adjusting screw 134, so that graphite wheel 122 is aligned with the discharge mold of glass tube 001.

[0064] In the heat preservation state, each protective plate 200 covers the outer periphery of the frame 100 and fits into the stepped annular groove 101, forming a sealed heat preservation environment to insulate the glass tube 001. At this time, the first connecting rod 310 and the second connecting rod 320 both abut against the inner side of the protective plate 200 for auxiliary support.

[0065] When the ambient temperature is high and insulation is not required, push the operating handle 430 along the clearance groove to cause the movable pawl 410 to swing and disengage from the internal gear ring 331, thus disengaging the internal gear ring 331 from its locked state. Pull the handle 202 of one of the protective plates 200, and the hinged first link 310 and second link 320 swing accordingly, forcing the protective plate 200 to flip and move away from the frame 100. The pinion 332 connected to the first link 310 rotates, and through meshing with the internal gear ring 331, it drives the other pinions 332 to rotate synchronously. The other first links 310 and the corresponding protective plates 200 also synchronously complete the flipping and moving away action, and the protective plates 200 switch to the heat dissipation state.

[0066] Pulling the control handle 430 along the clearance groove causes the movable pawl 410 to swing and engage with the tooth groove of the internal gear ring 331, thereby locking the rotation of the internal gear ring 331 and simultaneously fixing the position of all protective plates 200. Because the frame 100 adopts a hollow frame structure and has no fixed panels obstructing it, it provides a completely open airflow path for the glass tube 001, thus avoiding the generation of uneven temperature fields and temperature differences in the glass tube.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A glass tube insulated box, characterized in that, include: The frame (100), multiple protective plates (200) and drive linkage assembly (300) are provided, wherein the frame (100) is configured as a hollow frame and the glass tube (001) is located inside the frame (100); The protective plate (200) is mounted on the frame (100) via the drive linkage assembly (300) and can switch between heat preservation and heat dissipation states; Under the heat preservation condition, each of the protective plates (200) is evenly distributed around the frame (100) and covers the outer periphery of the frame (100) so that a closed heat preservation environment is formed inside the frame (100); In the heat dissipation state, each of the protective plates (200) is flipped and moved away from the frame (100) by the drive linkage group (300) so that the frame (100) is fully open.

2. The glass tube insulated box according to claim 1, characterized in that: The frame (100) includes an end plate (110) and an inner support unit (120), the inner support unit (120) includes a support beam (121) and a graphite wheel (122), and the end plate (110) is configured as a hollow structure; The support beam (121) is connected to an end plate (110) at both ends, and at least two graphite wheels (122) are evenly distributed and rotatably mounted on the support beam (121) along the length of the support beam (121) to support the glass tube (001).

3. The glass tube insulated box according to claim 2, characterized in that: The end plate (110) has a stepped annular groove (101). Under the heat preservation state, the protective plate (200) abuts against and fits against the stepped annular groove (101) to achieve limiting support for the protective plate (200).

4. The glass tube insulated box according to claim 3, characterized in that: The drive linkage assembly (300) includes a first link (310) and a second link (320); The two ends of the first link (310) and the second link (320) are respectively hinged to the end plate (110) and the protective plate (200) to form a four-bar linkage mechanism; The second link (320) is longer than the first link (310). The four-bar linkage changes the relative position of the protective plate (200) and the end plate (110) by swinging the first link (310) and the second link (320), thereby driving the protective plate (200) to move closer to or away from the frame (100), and thus closing or opening the frame (100).

5. The glass tube insulated box according to claim 4, characterized in that: The first connecting rod (310) is configured as a folding arm connecting rod composed of a first rod (311) and a second rod (312), wherein the first rod (311) is flush with the stepped annular groove (101) in the heat preservation state; The hinge point between the first connecting rod (310) and the protective plate (200) is located at the non-end position of the protective plate (200). The surface of the protective plate (200) hinged to the first connecting rod (310) is divided into a first limiting surface and a second limiting surface with the hinge point as the boundary. In both heat dissipation and heat preservation states, the first rod (311) limits the travel of the protective plate (200) by abutting against the first limiting surface and the second limiting surface, respectively.

6. The glass tube insulated box according to claim 4, characterized in that: The drive linkage assembly (300) further includes a synchronization unit (330), which includes an internal gear ring (331) rotatably connected to the end plate (110) and a plurality of pinions (332); The pinion (332) meshes with the internal gear ring (331) and is connected to one end of the first connecting rod (310) hinged to the end plate (110); The meshing transmission of the internal gear ring (331) and each of the pinions (332) is used to drive each of the first connecting rods (310) to swing synchronously, thereby driving each of the protective plates (200) to switch between heat dissipation state and heat preservation state.

7. The glass tube insulated box according to claim 6, characterized in that: It also includes a locking assembly (400), which includes a movable claw (410) and an extension rod (401) rotatably connected to the end plate (110). The movable claw (410) can lock the rotation of the internal gear ring (331) by engaging with the tooth groove of the internal gear ring (331), thereby fixing all the protective plates (200); The swinging of the movable jaw (410) is used to lock or unlock the rotation of the internal gear ring (331).

8. The glass tube insulated box according to claim 7, characterized in that: The movable claw (410) is also provided with a sliding rail (402) on the side away from the extension rod (401); The locking assembly (400) also includes a reversing slider (420) and a control handle (430). The end plate (110) has a clearance groove, and the control handle (430) is inserted into and blocks the clearance groove. The reversing slider (420) is slidably connected to the sliding rail (402) and rotatably connected to the operating handle (430); The control handle (430) slides along the clearance groove to drive the movable pawl (410) to swing via the reversing slider (420), thereby locking or unlocking the rotation of the internal gear ring (331).

9. The glass tube insulated box according to claim 2, characterized in that: The frame (100) also includes an external support unit (130), which includes a support base (131), a guide post (132), a sliding sleeve (133), and a height adjustment screw (134). The guide post (132) and the sliding sleeve (133) are respectively connected to the end plate (110) and the support base (131). The guide post (132) is inserted into the sliding sleeve (133). The height adjustment screw (134) abuts against the end plate (110) and is threadedly connected to the sliding sleeve (133). The rotation of the height adjustment screw (134) around its own axis is used to drive the end plate (110) to move along the length direction of the sliding sleeve (133), thereby adjusting the height of the frame (100).

10. The glass tube insulated box according to claim 1, characterized in that: The protective plate (200) is provided with a heat insulation layer (201) on the side connected to the drive linkage assembly (300) to improve the heat insulation effect under heat insulation conditions; A handle (202) is also provided on the side of the protective plate (200) away from the insulation layer (201) to facilitate operation of the protective plate (200) from the outside.

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