Gas Analysis Cabin Internal Component Fixing Connectors

Abstract

This invention relates to the field of connector technology, specifically to a fixing connector for internal components of a gas analysis cabin. The fixing connector assembly includes a cabin shell, an internal sliding groove, a built-in locking rod, a lateral sliding groove, a support sliding rod, a housing placement rod, a rear baffle, a tension sliding groove, an adjustable support rod, and a front baffle. The first rotating shaft reverses to rewind the control cable. Subsequently, the control cable pulls the lower hook upwards via the upper hook, allowing the support sliding rod to move upwards along the lateral sliding groove, carrying the housing placement rod. This adjusts the instrument's installation height, saving time and effort. The height can be adjusted at any time according to the required installation height. Furthermore, adjusting the instrument's height facilitates later inspection and maintenance. The fixing clamp locks the position of the instrument housing, quickly achieving instrument positioning and facilitating installation.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to internal component fixing connectors for gas analysis cabins. Background Technology

[0002] Connectors are used to securely mount devices; in gas analysis cabins, connectors are used to securely connect analytical instruments.

[0003] Gas analysis cabins are a relatively new technology that has gained popularity internationally in recent years. They integrate the combination, assembly, installation, and application of online industrial gas analysis instruments, initially finding widespread use in oil refining and chemical enterprises. The standardized and professional design of gas analysis cabins facilitates on-site installation and maintenance of gas analysis instruments and provides a favorable operating environment, leading to their increasing application in process plants. Our company's gas analysis cabins employ a forced ventilation positive pressure explosion-proof method to prevent explosion hazards caused by the release of flammable gases internally or external explosive environments. The cabins utilize a steel structure with steel plates for both inner and outer walls and an insulation layer in between. These cabins are suitable for explosive environments in Zone 1 or Zone 2 locations within the petroleum and chemical industries.

[0004] Currently, when connecting the instrument to the cabin shell using connectors inside the gas analysis cabin, the instrument's height cannot be adjusted vertically. This means that the instrument cannot be moved up or down after installation. If the height of the instrument needs to be adjusted at this point, it requires cumbersome disassembly and reassembly, and the position of the connectors also needs to be rearranged, causing great inconvenience to the instrument installation. Summary of the Invention

[0005] The purpose of this invention is to provide a fixing connector for internal components of a gas analysis cabin, in order to solve the problems mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an internal component fixing connector for a gas analysis cabin. The component fixing connector includes a cabin shell, an internal sliding groove, an internal locking rod, a lateral sliding groove, a support sliding rod, a housing placement rod, a rear baffle, a tension sliding groove, an adjustable support rod, and a front baffle. The internal sliding groove is located inside the cabin shell, and the internal locking rod is placed inside the cabin shell. The lateral sliding groove extends through the internal locking rod on the side away from the internal sliding groove. The support sliding rod is inserted into the lateral sliding groove. The housing placement rod is fixed to the side of the support sliding rod outside the lateral sliding groove. The rear baffle is mounted on the housing placement rod. The tension sliding groove is located on the upper side of the housing placement rod. The adjustable support rod is embedded in the tension sliding groove. The front baffle is mounted on the upper side of the adjustable support rod. A two-way locking component is provided on one side of the internal locking rod.

[0007] Preferably, a fixedly connected mounting bracket is provided on the upper inner side of the cabin shell, wherein a first rotating shaft is provided through the mounting bracket, a control steel cable is wound on the first rotating shaft, a distance hanging rod is sleeved on the control steel cable, the distance hanging rod is installed on the cabin shell, and a fixedly connected upper hook is provided on the side of the control steel cable that is not connected to the first rotating shaft.

[0008] Preferably, the built-in locking rod has lifting slots evenly and symmetrically arranged on one side facing the rear baffle. An external extension block is provided on one side of the built-in locking rod. An anti-detachment inner block is fixedly connected to the external extension block. The anti-detachment inner block is located inside the lateral sliding groove. A linkage rod is provided through the external extension block. The lower side of the linkage rod is fixed to the support sliding rod. A lower hook is fixedly connected to the upper side of the linkage rod.

[0009] Preferably, a rectangular groove is provided through the support slide rod, and a guide rod is placed in the middle of the rectangular groove. The guide rod is fixed to the support slide rod and a pushing spring is sleeved on the guide rod. A protruding plate is provided through the guide rod and is provided through the rectangular groove. The protruding plate is engaged in the two symmetrical lifting slots.

[0010] Preferably, a bottom limiting frame is fixedly connected to the lower middle position of the box placement rod, wherein a synchronous drive gear is placed in the middle of the bottom limiting frame, and a second rotating shaft is fixedly connected to the lower side of the synchronous drive gear. The second rotating shaft is movably connected to the bottom limiting frame. Adjusting tooth plates are symmetrically arranged on both sides of the bottom limiting frame, wherein a side wing support plate is fixedly connected to the adjusting tooth plate, and a fixed clamping plate is fixedly connected to the upper side of the side wing support plate. A transverse guide plate is passed through the middle of the fixed clamping plate and is fixed to the box placement rod.

[0011] Preferably, the adjustable support rod has an expansion groove in the middle, and an internal pull rod is placed inside the expansion groove. The internal pull rod is fixed to the box placement rod, and an internal tension spring is sleeved on the internal pull rod. A partition ring is sleeved on the internal pull rod, and the partition ring is fixedly connected to the adjustable support rod.

[0012] Preferably, the bidirectional locking assembly includes a bidirectional pushing cylinder, an anti-slip outer shell, a locking rod, a reverse thrust screw, a vertical moving rod, a sleeve frame, and an insertion top block. The anti-slip outer shell is fitted onto the middle of the bidirectional pushing cylinder, the locking rod is fitted onto the upper part of the bidirectional pushing cylinder, the reverse thrust screw is symmetrically inserted on the upper and lower sides of the bidirectional pushing cylinder, the vertical moving rod is fixed on the side of the reverse thrust screw away from the bidirectional pushing cylinder, the sleeve frame is fitted onto the vertical moving rod, and the insertion top block is fixed on the side of the vertical moving rod away from the reverse thrust screw.

[0013] Preferably, the locking rod is movably connected to the bidirectional pushing cylinder, wherein the locking rod is fixed on the built-in locking rod, the reverse thrust screw is screwed to the bidirectional pushing cylinder, and the sleeve frame is fixedly connected to the built-in locking rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Compared with existing fixed connectors, this fixed connector allows for vertical adjustment of the instrument's position, as follows: The first rotating shaft reverses to rewind the control cable. Subsequently, the control cable pulls the lower hook upward via the upper hook, and the support slide rod moves upward along the sliding groove, carrying the housing placement rod. This allows for adjustment of the instrument's installation height. This height adjustment is time-saving and labor-saving, and can be adjusted at any time according to the required installation height of the instrument. At the same time, the height adjustment of the instrument also helps staff to inspect and maintain the instrument later.

[0016] Synchronous drive gears drive the control gear plate, causing the two side wing support plates to approach the housing placement rod. When the side wing support plates are a certain distance away from the housing placement rod, the fixing clamp can lock the position of the instrument housing, thereby quickly achieving the purpose of locking the instrument position and facilitating the installation of the instrument. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic front view of a partial section of the cabin shell of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of the built-in locking lever of the present invention.

[0020] Figure 4 This is a three-dimensional half-section diagram of the built-in locking rod of the present invention.

[0021] Figure 5 This is a three-dimensional schematic diagram of the box placement rod of the present invention.

[0022] Figure 6 This is a right-side half-section schematic diagram of the box placement rod of the present invention.

[0023] Figure 7 This is a three-dimensional schematic diagram of the bidirectional pushing cylinder of the present invention.

[0024] Figure 8 For the present invention Figure 2 Enlarged diagram of point A in the diagram.

[0025] Figure 9 For the present invention Figure 4 Enlarged diagram of point B in the image.

[0026] Figure 10 For the present invention Figure 6 Enlarged diagram of point C in the image.

[0027] In the diagram: 1. Cabin shell; 101. Mounting bracket; 102. First rotating shaft; 103. Control cable; 104. Distance hanging rod; 105. Upper hook; 11. Inner sliding groove; 12. Internal locking rod; 1201. Lifting slot; 1202. External extension block; 1203. Anti-detachment inner block; 1204. Linkage rod; 1205. Lower hook; 13. Along-direction sliding groove; 14. Supporting sliding rod; 1401. Rectangular receiving groove; 1402. Guide rod; 1403. Pushing spring; 1404. Protruding locking plate; 15. Box placement rod; 1501. Bottom limit 1502. Frame; 1503. Synchronous drive gear; 1504. Second rotating shaft; 1505. Adjusting gear plate; 1506. Side wing support plate; 1507. Fixed clamping plate; 1508. Transverse guide plate; 16. Rear baffle; 17. Pull distance slide groove; 18. Adjustable support rod; 1801. Expansion groove; 1802. Built-in pull rod; 1803. Internal tension spring; 1804. Spacing ring; 19. Front baffle; 2. Bidirectional pushing cylinder; 21. Anti-slip shell; 22. Locking rod; 23. Reverse push screw; 24. Up and down moving rod; 25. Sleeve frame; 26. Insertion top block. Detailed Implementation

[0028] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific configurations and algorithms presented below, but covers any modifications, substitutions, and improvements to elements, components, and algorithms without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description in order to avoid unnecessarily obscuring the invention.

[0029] Please see Figures 1 to 10This invention provides a technical solution including a device fixing connection assembly. The assembly includes a cabin shell 1, an inner sliding groove 11, an internal locking rod 12, a lateral sliding groove 13, a supporting sliding rod 14, a box placement rod 15, a rear baffle 16, a tension sliding groove 17, an adjustable support rod 18, and a front baffle 19. The inner sliding groove 11 is located inside the cabin shell 1, and the internal locking rod 12 is placed inside the cabin shell 1, covering the inner sliding groove 11. The lateral sliding groove 13 extends through the internal locking rod 12 on the side away from the inner sliding groove 11. The supporting sliding rod 14 is inserted into the lateral sliding groove 13. The box placement rod 15 is fixed to the side of the supporting sliding rod 14 outside the lateral sliding groove 13. The rear baffle 16 is mounted on the box placement rod 15, positioned close to the supporting sliding rod 14, and is detachably mounted on the box placement rod 15. For example, the rear baffle 16 and the housing placement rod 15 are connected by a snap fastener, which facilitates the disassembly of the rear baffle 16. The instrument housing can be placed on the housing placement rod 15 so that the back of the instrument housing is against the rear baffle 16. The lateral sliding groove 13 can be a convex groove, and the part of the support sliding rod 14 inside the lateral sliding groove 13 can be a convex block. The tension sliding groove 17 is opened on the upper side of the housing placement rod 15, and the adjustable support rod 18 is embedded in the tension sliding groove 17. The front baffle 19 is installed on the upper side of the adjustable support rod 18. The front baffle 19 can also be installed on the adjustable support rod 18 by a snap fastener to facilitate the disassembly of the front baffle 19. The height of the front baffle 19 can be adjusted according to actual use to avoid obstructing the cabinet door on the instrument housing. The small house shell 1 adopts a steel structure, with steel plates for both the inner and outer walls and a heat insulation layer in the middle. A two-way locking component is provided on one side of the built-in locking rod 12.

[0030] An installation bracket 101 is fixedly connected to the upper side of the interior of the cabin shell 1. A first rotating shaft 102 is installed through the installation bracket 101. The first rotating shaft 102 is connected to the installation bracket 101 via a pivot. The first rotating shaft 102 is driven to rotate by a motor. A control steel cable 103 is wound around the first rotating shaft 102. One side of the control steel cable 103 wound around the first rotating shaft 102 is fixed to the first rotating shaft 102. The rotation of the first rotating shaft 102 can realize the raising and lowering of the control steel cable 103. A distance hanging rod 104 is sleeved on the control steel cable 103. The distance hanging rod 104 is installed on the cabin shell 1. A fixed upper hook 105 is provided on the side of the control steel cable 103 that is not connected to the first rotating shaft 102.

[0031] The built-in locking rod 12 has symmetrically spaced lifting slots 1201 on one side facing the rear baffle 16. An external extension block 1202 is provided on one side of the built-in locking rod 12, and a fixedly connected anti-detachment inner block 1203 is provided on the external extension block 1202. The anti-detachment inner block 1203 is located inside the lateral sliding groove 13. A linkage rod 1204 is threaded through the external extension block 1202, with its lower side fixed to the support sliding rod 14 and its upper side fixedly connected to a lower hook 1205. The linkage rod 1204 can be made of steel cable, and the anti-detachment inner block 1203 has a convex shape.

[0032] By rotating the first rotating shaft 102, the control cable 103 is unwinding. Then, the upper hook 105 moves downward. When the upper hook 105 moves to a certain position, it can be hooked onto the lower hook 1205. Further, the first rotating shaft 102 reverses to wind up the control cable 103. Then, the control cable 103 will pull the lower hook 1205 upward with the help of the upper hook 105. Then, the support slide rod 14 can move upward along the lateral slide groove 13 with the box placement rod 15, thereby adjusting the installation height of the instrument. This height adjustment is time-saving and labor-saving, and can be adjusted at any time according to the required installation height of the instrument. At the same time, the height adjustment of the instrument also helps the staff to inspect and maintain the instrument later. During the upward movement of the support slide rod 14, the anti-detachment inner block 1203 will also move upward inside the lateral slide groove 13.

[0033] A rectangular groove 1401 is provided through the support slide rod 14. A guide rod 1402 is placed in the middle of the rectangular groove 1401. The guide rod 1402 is fixed to the support slide rod 14 and can be installed on the support slide rod 14 by snap-fit. The guide rod 1402 can be a cylindrical rod or a rectangular rod. A push spring 1403 is sleeved on the guide rod 1402. A protruding plate 1404 is provided through the guide rod 1402 and is provided through the rectangular groove 1401. The protruding plate 1404 is engaged in the interior of two symmetrical lifting slots 1201.

[0034] Before the support slide rod 14 needs to be moved up or down, the protruding plate 1404 is first pulled, so that the protruding plate 1404 moves on the support slide rod 14. The push spring 1403 is deformed by stored force, and the protruding plate 1404 leaves the current lifting slot 1201. Then the support slide rod 14 can move up and down. After the protruding plate 1404 has finished moving, it is released and re-engaged into the other lifting slot 1201, thereby locking the position of the support slide rod 14.

[0035] A bottom limiting frame 1501 is fixedly connected to the lower middle position of the box placement rod 15. A synchronous drive gear 1502 is placed in the middle of the bottom limiting frame 1501. A second rotating shaft 1503 is fixedly connected to the lower side of the synchronous drive gear 1502. The second rotating shaft 1503 is movably connected to the bottom limiting frame 1501 via a pivot, and is driven to rotate by a motor. 1. A regulating gear plate 1504 is symmetrically arranged on both sides of the synchronous drive gear 1502. The regulating gear plate 1504 and the synchronous drive gear 1502 are meshed. A side wing support plate 1505 is fixedly connected on the regulating gear plate 1504. A fixing clamp plate 1506 is fixedly connected on the upper side of the side wing support plate 1505. A transverse guide plate 1507 is provided through the middle of the fixing clamp plate 1506. The transverse guide plate 1507 is fixed on the box placement rod 15. The transverse guide plate 1507 guides the movement of the side wing support plates 1505. When the instrument is placed on the housing placement rod 15, the second rotating shaft 1503 drives the synchronous drive gear 1502 to rotate. Subsequently, the synchronous drive gear 1502 drives the adjustment gear plate 1504, causing the two side wing support plates 1505 to approach the housing placement rod 15. After the side wing support plates 1505 approach the housing placement rod 15 by a certain distance, the fixing clamp 1506 can lock the position of the instrument housing, thereby quickly achieving the purpose of locking the instrument position and facilitating the installation of the instrument.

[0036] An expansion slot 1801 is provided in the middle of the interior of the adjustable support rod 18. An internal pull rod 1802 is placed inside the expansion slot 1801. The internal pull rod 1802 is fixed to the box placement rod 15. The internal pull rod 1802 is a T-shaped rod. An internal tension spring 1803 is sleeved on the internal pull rod 1802. A partition ring 1804 is sleeved on the internal pull rod 1802. The partition ring 1804 is fixedly connected to the adjustable support rod 18. Before the instrument housing is placed on the housing placement rod 15, the front baffle 19 can be pulled, causing the adjustable support rod 18 to slide within the tension groove 17. Subsequently, the partition ring 1804 slides on the built-in pull rod 1802, and the inner tension spring 1803 undergoes a stored deformation. After the instrument housing is placed on the housing placement rod 15, the front baffle 19 is released, and then the inner tension spring 1803 pushes the partition ring 1804, causing the front baffle 19 to fit against the instrument housing and restrict it from the front position.

[0037] The bidirectional locking assembly includes a bidirectional pushing cylinder 2, an anti-slip outer shell 21, a locking rod 22, a reverse thrust screw 23, a vertical moving rod 24, a sleeve frame 25, and an insertion top block 26. The anti-slip outer shell 21 is fitted onto the middle of the bidirectional pushing cylinder 2, and the locking rod 22 is fitted onto the upper part of the bidirectional pushing cylinder 2. The reverse thrust screw 23 is symmetrically inserted on the upper and lower sides of the bidirectional pushing cylinder 2. The vertical moving rod 24 is fixed to the side of the reverse thrust screw 23 away from the bidirectional pushing cylinder 2. The sleeve frame 25 is fitted onto the vertical moving rod 24, and the insertion top block 26 is fixed to the side of the vertical moving rod 24 away from the reverse thrust screw 23. The anti-slip outer shell 21 is hexagonal in shape.

[0038] The locking rod 22 is movably connected to the bidirectional pushing cylinder 2. The locking rod 22 is connected to the bidirectional pushing cylinder 2 via a rotating shaft. The sleeve frame 25 guides the movement of the up and down moving rod 24. The locking rod 22 is fixed on the built-in locking rod 12. The reverse push screw 23 is screwed to the bidirectional pushing cylinder 2. The sleeve frame 25 is fixedly connected to the built-in locking rod 12.

[0039] After the built-in locking lever 12 covers the inner slide groove 11, the bidirectional pushing cylinder 2 is first rotated by the anti-slip outer shell 21. Then, the reverse push screw 23 extends out from the inside of the bidirectional pushing cylinder 2, the up and down moving rod 24 is pushed, and the insertion top block 26 is inserted into the inner slide groove 11 to achieve quick locking of the built-in locking lever 12.

[0040] Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art, based on a study of the drawings, specification, and claims, should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to identify names rather than to indicate any particular order. No reference numerals in the claims should be construed as limiting the scope of protection. The functionality of multiple parts appearing in the claims can be implemented by a single hardware or software module. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A device fixing connector for an internal component of a gas analysis cabin, comprising a device fixing connector assembly, characterized in that: The fixed connection assembly of the device includes a cabin shell (1), an inner sliding groove (11), an internal locking rod (12), a lateral sliding groove (13), a support sliding rod (14), a box placement rod (15), a rear baffle (16), a tension sliding groove (17), an adjustable support rod (18), and a front baffle (19). The inner sliding groove (11) is opened inside the cabin shell (1), and the internal locking rod (12) is placed inside the cabin shell (1). The lateral sliding groove (13) is opened through the internal locking rod (12) on the side away from the inner sliding groove (11). The support slide rod (14) is inserted into the interior of the lateral slide groove (13), wherein the box placement rod (15) is fixed on the side of the support slide rod (14) outside the lateral slide groove (13), the rear baffle (16) is installed on the box placement rod (15), wherein the tension slide groove (17) is opened on the upper side of the box placement rod (15), the adjustable support rod (18) is embedded in the interior of the tension slide groove (17), wherein the front baffle (19) is installed on the upper side of the adjustable support rod (18), and a two-way locking assembly is provided on one side of the built-in locking rod (12); The bidirectional locking assembly includes a bidirectional pushing cylinder (2), an anti-slip shell (21), a locking rod (22), a reverse thrust screw (23), an up-and-down moving rod (24), a sleeve frame (25), and an insertion top block (26). The anti-slip shell (21) is fitted around the middle of the bidirectional pushing cylinder (2), the locking rod (22) is fitted around the upper part of the bidirectional pushing cylinder (2), the reverse thrust screw (23) is symmetrically inserted on the upper and lower sides of the bidirectional pushing cylinder (2), the up-and-down moving rod (24) is fixed on the side of the reverse thrust screw (23) away from the bidirectional pushing cylinder (2), the sleeve frame (25) is fitted around the up-and-down moving rod (24), and the insertion top block (26) is fixed on the side of the up-and-down moving rod (24) away from the reverse thrust screw (23). The locking rod (22) is movably connected to the bidirectional pushing cylinder (2), wherein the locking rod (22) is fixed on the built-in locking rod (12), the reverse push screw (23) is screwed to the bidirectional pushing cylinder (2), and the sleeve frame (25) is fixedly connected to the built-in locking rod (12).

2. The internal component fixing connector for the gas analysis cabin according to claim 1, characterized in that: The upper interior of the cabin shell (1) is provided with a fixedly connected mounting bracket (101), wherein a first rotating shaft (102) is provided through the mounting bracket (101), and a control steel cable (103) is wound on the first rotating shaft (102). A distance hanging rod (104) is sleeved on the control steel cable (103), and the distance hanging rod (104) is installed on the cabin shell (1). A fixedly connected upper hook (105) is provided on the side of the control steel cable (103) that is not connected to the first rotating shaft (102).

3. The internal component fixing connector for the gas analysis cabin according to claim 1, characterized in that: The built-in locking rod (12) has a lifting slot (1201) evenly and symmetrically opened on the side facing the rear baffle (16). An external extension block (1202) is provided on one side of the built-in locking rod (12). An anti-detachment inner block (1203) is fixedly connected on the external extension block (1202). The anti-detachment inner block (1203) is located inside the lateral sliding groove (13). A linkage rod (1204) is provided through the external extension block (1202). The lower side of the linkage rod (1204) is fixed on the support sliding rod (14). A lower hook (1205) is fixedly connected on the upper side of the linkage rod (1204).

4. The internal component fixing connector for the gas analysis cabin according to claim 3, characterized in that: A rectangular groove (1401) is provided through the support slide rod (14). A guide rod (1402) is placed in the middle of the rectangular groove (1401). The guide rod (1402) is fixed on the support slide rod (14). A push spring (1403) is sleeved on the guide rod (1402). A protruding plate (1404) is provided through the guide rod (1402). The protruding plate (1404) is provided through the rectangular groove (1401). The protruding plate (1404) is inserted into the two symmetrical lifting slots (1201).

5. The internal component fixing connector for the gas analysis cabin according to claim 1, characterized in that: A bottom limiting frame (1501) is fixedly connected to the middle position of the lower side of the box placement rod (15). A synchronous drive gear (1502) is placed in the middle of the bottom limiting frame (1501). A second rotating shaft (1503) is fixedly connected to the lower side of the synchronous drive gear (1502). The second rotating shaft (1503) is movably connected to the bottom limiting frame (1501). Adjustment tooth plates (1504) are symmetrically arranged on both sides of the bottom limiting frame (1501). A side wing support plate (1505) is fixedly connected to the adjustment tooth plate (1504). A fixed clamping plate (1506) is fixedly connected to the upper side of the side wing support plate (1505). A transverse guide plate (1507) is provided through the middle of the fixed clamping plate (1506). The transverse guide plate (1507) is fixed to the box placement rod (15).

6. The internal component fixing connector for the gas analysis cabin according to claim 4, characterized in that: An expansion groove (1801) is provided in the middle of the interior of the adjustable support rod (18). An internal pull rod (1802) is placed inside the expansion groove (1801). The internal pull rod (1802) is fixed on the box placement rod (15). An internal tension spring (1803) is sleeved on the internal pull rod (1802). A partition ring (1804) is sleeved on the internal pull rod (1802). The partition ring (1804) is fixedly connected to the adjustable support rod (18).

Images