Guide wheel and gas tank

Abstract

The utility model provides a guide wheel and a gas tank, and relates to the technical field of supporting guide components. The guide wheel of the utility model is located between the piston of the gas tank and the track plate of the column. The guide wheel includes a wheel body, a first bracket, a second bracket, a pressure sensor and a pressure display. The wheel body is rotatably mounted on the first bracket and is used to run along the track plate; the pressure sensor is mounted on the second bracket and is against the first bracket; the second bracket is connected to the first bracket and is used to connect with the piston; the pressure display is electrically connected to the pressure sensor. The guide wheel can obtain the pressure change of the guide wheel through the pressure sensor and the pressure display while realizing the up and down movement of the piston, so that it can be judged whether the guide wheel needs to be adjusted according to the pressure value and the guide wheel can be adjusted accordingly. While effectively improving the convenience of adjusting the guide wheel of the gas tank, the balance of the piston after the guide wheel is adjusted can also be ensured through the feedback of the pressure value.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting guide components, in particular to a guide wheel and a gas cabinet. Background Art

[0002] In industrial production fields such as steel smelting, the supply of smelting energy is crucial. The energy supply system is usually centered on a gas tank such as a MAN gas tank. The gas tank can adjust the pressure of the main network to achieve the operation throughput function. During the operation throughput of the gas tank, the piston in the gas tank body needs to move up and down to achieve pressure regulation. The up and down movement of the piston is generally achieved by moving the guide wheel connected to it along the track plate of the gas tank column.

[0003] During the manufacturing and assembly process of the gas tank, due to processing or installation errors, the column is not completely perpendicular to the bottom of the gas tank. As a result, the gap between the column and the guide wheel will change during the up and down movement of the piston, and the pressure applied to the piston by the track plate on the column through the guide wheel will also change, affecting the balance of the piston and even causing the column to be subjected to excessive pressure from the guide wheel, resulting in oil leakage.

[0004] At present, the guide wheel is generally adjusted by measuring and estimating the gap between the column and the guide wheel to avoid the above situation. However, the above method of adjusting the guide wheel is relatively inconvenient and difficult, and it is not easy to keep the balance of the piston after adjustment, which affects the working stability of the gas tank. Utility Model Content

[0005] The problem solved by the utility model is how to improve the convenience of adjusting the guide wheel of the gas tank and ensure the balance of the piston after adjustment.

[0006] In order to solve the above problems, the utility model provides a guide wheel and a gas cabinet.

[0007] In the first aspect, the utility model provides a guide wheel, which is located between the piston of the gas tank and the track plate of the column, and the guide wheel includes a wheel body, a first bracket, a second bracket, a pressure sensor and a pressure display. The wheel body is rotatably mounted on the first bracket and is used to run along the track plate; the pressure sensor is mounted on the second bracket and is against the first bracket; the second bracket is movably connected to the first bracket and is used to be connected to the piston; the pressure display is electrically connected to the pressure sensor.

[0008] Optionally, one end of the first bracket is rotatably connected to the second bracket around a first direction, the pressure sensor abuts against the other end of the first bracket, and the first direction is parallel to the rotation axis of the wheel body.

[0009] Optionally, a storage groove with an opening facing the second bracket is provided on the first bracket, and the pressure sensor is installed on the end surface of the second bracket facing the first bracket and is correspondingly placed in the storage groove.

[0010] Optionally, a threaded fastener is installed on the first bracket, the threaded fastener is located in the storage groove, and the threaded fastener is used to rotate relative to the first bracket to adjust the distance between the pressure sensor and the threaded fastener.

[0011] Optionally, the pressure sensor includes a pressure box and an elastic structure, the pressure box is mounted on the second bracket and abuts against one end of the elastic structure, the pressure box is electrically connected to the pressure display, and the other end of the elastic structure extends into the storage groove and abuts against the threaded fastener.

[0012] Optionally, the elastic structure includes a spring and a spring clamping cap, the spring is installed on the second bracket through the spring clamping cap and abuts against the pressure box, and the spring clamping cap abuts against the threaded fastener.

[0013] Optionally, the pressure box is a hollow structure and is used for deformation under pressure. Liquid and a hydraulic pressure sensing element are arranged in the pressure box, and the pressure display element is electrically connected to the hydraulic pressure sensing element.

[0014] Optionally, the pressure sensor further comprises a mounting shell, wherein the mounting shell is mounted on an end face of the second bracket facing away from the first bracket, the pressure box is mounted in the mounting shell, and the mounting shell is arranged toward the opening of the first bracket so that one end of the elastic structure can extend into the mounting shell.

[0015] Optionally, the mounting shell is provided with a through hole for the cable to pass through, and two ends of the cable are respectively connected to the pressure box and the pressure display element.

[0016] In a second aspect, the utility model provides a gas cabinet, comprising a piston, a column and the guide wheel as described above.

[0017] The beneficial effect of the guide wheel of the utility model is as follows: a wheel body, a first bracket, a second bracket, a pressure sensor and a pressure display are arranged to form the guide wheel, wherein the wheel body is rotatably mounted on the first bracket and can travel along the track plate, and the pressure sensor is mounted on the second bracket and abuts against the first bracket, the second bracket is movably connected to the first bracket and can be connected to the piston, at the same time, the pressure display is connected to the pressure sensor and can display the pressure borne by the pressure sensor, with such an arrangement, the piston can move up and down along the track plate through the second bracket, the first bracket and the wheel body, thereby ensuring the stability of the up and down movement of the piston, and in the process of the up and down movement of the piston, as the gap between the column and the guide wheel changes , the pressure applied by the column to the wheel body through the track plate also changes accordingly, and the wheel body can transmit the pressure to the first bracket, and the first bracket transmits the pressure to the pressure sensor against it, and the pressure value of the pressure sensor can be displayed by the pressure display, so that the pressure change of the guide wheel in the process of the piston moving up and down can be obtained by the change of the pressure value displayed by the pressure display, and then the pressure applied by the guide wheel to the column can be fed back according to the relativity of force, so that it can be judged whether the guide wheel needs to be adjusted according to the pressure value and the guide wheel can be adjusted accordingly. While effectively improving the convenience of adjusting the guide wheel of the gas tank, the pressure value feedback can also be used to ensure the balance of the piston after the guide wheel is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly of the guide wheel in the gas cabinet in the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the guide wheel in the first embodiment of the utility model;

[0020] Figure 3 This is a schematic structural diagram of a viewing angle guide wheel in the second embodiment of the utility model;

[0021] Figure 4 This is a schematic structural diagram of another viewing angle guide wheel in the second embodiment of the utility model;

[0022] Figure 5 for Figure 4 The cross-sectional structure diagram of AA is shown in FIG.

[0023] Description of reference numerals:

[0024] 1. Wheel body; 2. First bracket; 21. Storage slot; 22. Threaded fastener; 3. Second bracket; 4. Pressure sensor; 41. Pressure box; 42. Elastic structure; 421. Spring; 422. Spring clamping cap; 43. Mounting shell; 431. Through hole; 5. Pressure display; 51. Cable; 6. Piston; 7. Column. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Although some embodiments of the utility model are shown in the accompanying drawings, it should be understood that the utility model can be implemented in various forms and should not be interpreted as being limited to the embodiments described here. On the contrary, these embodiments are provided to more thoroughly and completely understand the utility model. It should be understood that the drawings and embodiments of the utility model are only for exemplary purposes and are not used to limit the scope of protection of the utility model.

[0026] The Z axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the accompanying drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the accompanying drawings represents the left and right position, and the positive direction of the Y axis represents the right side, and the reverse direction of the Y axis represents the left side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The term "including" and its variations used in this article are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0028] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0029] The embodiments of the utility model provide a guide wheel and a gas cabinet.

[0030] like Figure 1 and Figure 2As shown, a guide wheel provided by the first embodiment of the utility model is located between the piston 6 of the gas tank and the track plate of the column 7. The guide wheel includes a wheel body 1, a first bracket 2, a second bracket 3, a pressure sensor 4 and a pressure display 5. The wheel body 1 is rotatably mounted on the first bracket 2 and is used to run along the track plate; the pressure sensor 4 is mounted on the second bracket 3 and is against the first bracket 2; the second bracket 3 is connected to the first bracket 2 and is used to be connected to the piston 6; the pressure display 5 is electrically connected to the pressure sensor 4.

[0031] Specifically, the guide wheel is a fixed guide wheel or a spring guide wheel; the pressure display component 5 is located outside the gas tank and is electrically connected to the pressure sensor 4. The pressure sensor 4 can generate an electrical signal when subjected to pressure, and transmit the electrical signal to the pressure display component 5, so that the pressure display component 5 displays the pressure value. By way of example, the pressure display component 5 is a pressure display instrument.

[0032] In this embodiment, Figure 1 and Figure 2 As shown, a wheel body 1, a first bracket 2, a second bracket 3, a pressure sensor 4 and a pressure display element 5 are arranged to form a guide wheel, wherein the wheel body 1 is rotatably mounted on the first bracket 2 and can travel along the track plate, and the pressure sensor 4 is mounted on the second bracket 3 and abuts against the first bracket 2, the second bracket 3 is movably connected to the first bracket 2 and can be connected to the piston 6, and at the same time, the pressure display element 5 is electrically connected to the pressure sensor 4. In this way, the piston 6 can move up and down along the track plate through the second bracket 3, the first bracket 2 and the wheel body 1, ensuring the stability of the up and down movement of the piston 6, and in the process of the up and down movement of the piston 6, as the gap between the column 7 and the guide wheel changes, the column 7 passes through the track The pressure applied by the track plate to the wheel body 1 also changes accordingly, and the wheel body 1 can transmit the pressure to the first bracket 2, and the first bracket 2 transmits the pressure to the pressure sensor 4 which is against it, and the pressure value of the pressure sensor 4 can be displayed by the pressure display 5, so that the pressure change of the guide wheel during the up and down movement of the piston 6 can be obtained by the change of the pressure value displayed by the pressure display 5, and then the pressure applied by the guide wheel to the column 7 can be fed back according to the relativity of force, so that it can be judged whether the guide wheel needs to be adjusted according to the pressure value and the guide wheel can be adjusted accordingly. While effectively improving the convenience of adjusting the guide wheel of the gas tank, the balance of the piston after the guide wheel is adjusted can also be guaranteed by the feedback of the pressure value.

[0033] like Figure 2 As shown, optionally, one end of the first bracket 2 is rotatably connected to the second bracket 3 around a first direction, the pressure sensor 4 abuts against the other end of the first bracket 2, and the first direction is parallel to the rotation axis of the wheel body 1.

[0034] Specifically, Figure 2As shown, the first direction is the X-axis direction, and one end of the first bracket 2 is connected to the second bracket 3 for rotation around the first direction via a rotation axis.

[0035] In this optional embodiment, one end of the first bracket 2 is connected to the second bracket 3 for rotation around the first direction, and the pressure sensor 4 is against the other end of the first bracket 2, and the first direction is parallel to the rotation axis of the wheel body 1. In this arrangement, when the wheel body 1 moves along the track plate, the wheel body 1 can transfer the pressure of the column 7 to the first bracket 2, and the first bracket 2 can transfer the pressure to the rotation connection between the first bracket 2 and the second bracket 3. Since the first bracket 2 and the second bracket 3 are rotationally connected and the rotation axis is parallel to the rotation axis of the wheel body 1, the first bracket 2 can rotate relative to the second bracket 3 when under pressure, so that the first bracket 2 squeezes the pressure sensor 4, and the pressure carried by the pressure sensor 4 can feed back the pressure given by the column 7 to the guide wheel, that is, the pressure given by the guide wheel to the column 7 can be fed back according to the corresponding relationship between the pressure value displayed by the pressure display 5 and the pressure given by the column 7 to the guide wheel, thereby ensuring the accuracy of the guide wheel adjustment.

[0036] like Figure 2 As shown, optionally, a storage slot 21 with an opening toward the second bracket 3 is provided on the first bracket 2 , and the pressure sensor 4 is installed on the end surface of the second bracket 3 facing the first bracket 2 and is correspondingly placed in the storage slot 21 .

[0037] Specifically, Figure 2 As shown, the pressure sensor 4 abuts against the bottom wall of the storage groove 21 , and the storage groove 21 penetrates the first bracket 2 along the rotation connection away from the first bracket 2 and the second bracket 3 .

[0038] In this optional embodiment, if Figure 2 As shown, a storage groove 21 with an opening toward the second bracket 3 is provided on the first bracket 2, and the pressure sensor 4 is installed on the end face of the second bracket 3 facing the first bracket 2, and is correspondingly placed in the storage groove 21, so that a yield structure can be formed by the storage groove 21. On the basis of stable fit between the first bracket 2 and the second bracket 3, the space required for installing the guide wheel due to the provision of the pressure sensor 4 is avoided, and it is convenient to structurally improve the existing guide wheel and add the pressure sensor 4, thereby effectively improving the application scope and convenience of the pressure sensor 4; on this basis, the pressure sensor 4 is abutted against the bottom wall of the storage groove 21, thereby ensuring that the first bracket 2 can stably transmit the pressure to the pressure sensor 4.

[0039] like Figure 2 As shown, optionally, a threaded fastener 22 is installed on the first bracket 2 , and the threaded fastener 22 is located in the storage groove 21 . The threaded fastener 22 is used to rotate relative to the first bracket 2 to adjust the distance between the pressure sensor 4 and the threaded fastener 22 .

[0040] Specifically, the threaded fastener 22 is a screw, a bolt or a stud.

[0041] In this optional embodiment, if Figure 2 As shown, a threaded fastener 22 is installed on the first bracket 2, the threaded fastener 22 is located in the storage groove 21 and is against the pressure sensor 4, and the threaded fastener 22 can rotate relative to the first bracket 2 to adjust the distance between the pressure sensor 4 and the threaded fastener 22. In this way, a threaded fastener 22 is screwed in the storage groove 21, and the threaded fastener 22 can adjust its length in the storage groove 21 by rotation, and the threaded fastener 22 can be against the pressure sensor 4. Therefore, on the basis of the first bracket 2 stably transmitting the pressure to the pressure sensor 4 through the threaded fastener 22, the distance between the threaded fastener 22 and the pressure sensor 4 can be adjusted by adjusting the length of the threaded fastener 22 in the storage groove 21, and then the angle at which the first bracket 2 can rotate relative to the second bracket 3 can be adjusted, thereby increasing the pressure that the pressure sensor 4 can withstand, facilitating the increase of the range of pressure given to the guide wheel by the feedback column 7, and effectively improving the application range of the guide wheel adjustment scheme.

[0042] like Figures 3 to 5 As shown, compared with the first embodiment, in the second embodiment of the utility model, the pressure sensor 4 includes a pressure box 41 and an elastic structure 42, the pressure box 41 is installed on the second bracket 3, and is against one end of the elastic structure 42, the pressure box 41 is electrically connected to the pressure display element 5, and the other end of the elastic structure 42 extends into the storage groove 21 and is against the threaded fastener 22.

[0043] Specifically, the pressure box 41 itself can be a pressure sensing element, which is used to generate an electrical signal when it is deformed under pressure, or a pressure sensing element is provided on the pressure box 41, which can generate an electrical signal according to the pressure exerted on the pressure box 41 and transmit the electrical signal to the pressure display 5; the elastic structure 42, the first bracket 2, the wheel body 1 and the second bracket 3 constitute a spring guide wheel.

[0044] In this embodiment, Figures 3 to 5As shown, a pressure box 41 and an elastic structure 42 are provided to form a pressure sensor 4, wherein the pressure box 41 is mounted on the second bracket 3 and abuts against one end of the elastic structure 42, and the pressure box 41 is electrically connected to the pressure display element 5, and the other end of the elastic structure 42 extends into the storage slot 21 and abuts against the threaded fastener 22. In this arrangement, when the wheel body 1 transmits pressure to the first bracket 2, the first bracket 2 can transmit the pressure to the elastic structure 42 through the threaded fastener 22, and the elastic structure 42 is extended and retracted, realizing the elastic adjustment function of the spring guide wheel, and avoiding excessive pressure on the column 7 by the guide wheel; on this basis, the elastic structure 42 can transmit pressure to the pressure box 41, and the pressure box 41 is mounted on the second bracket 3, and while bearing pressure so that the pressure display element 5 can display pressure changes, it can transmit pressure to the second bracket 3.

[0045] like Figure 4 and Figure 5 As shown, optionally, the elastic structure 42 includes a spring 421 and a spring clamping cap 422 , the spring 421 is installed on the second bracket 3 through the spring clamping cap 422 and abuts against the pressure box 41 , and the spring clamping cap 422 abuts against the threaded fastener 22 .

[0046] Specifically, the existing spring guide wheel can be improved, and the pressure box 41 can be directly installed on the second bracket 3 of the existing spring guide wheel.

[0047] In this optional embodiment, if Figure 4 and Figure 5 As shown, a spring 421 and a spring clamping cap 422 are provided to form an elastic structure 42, wherein the spring 421 is mounted on the second bracket 3 through the spring clamping cap 422 and abuts against the pressure box 41, and the spring clamping cap 422 abuts against the threaded fastener 22. With such a configuration, when the wheel body 1 transmits pressure to the first bracket 2, the first bracket 2 can transmit the pressure to the spring 421 through the threaded fastener 22 and the spring clamping cap 422, and the spring 421 is extended and retracted, so as to realize the elastic adjustment function of the spring guide wheel and prevent the guide wheel from applying excessive pressure to the column 7; on this basis, the spring 421 can transmit the pressure to the pressure box 41, and the pressure box 41 is mounted on the second bracket 3, and can transmit the pressure to the second bracket 3 while bearing the pressure so that the pressure display element 5 can display the pressure change.

[0048] like Figure 5 As shown, optionally, the pressure box 41 is a hollow structure and is used for deformation under pressure. Liquid and a hydraulic pressure sensing element are arranged in the pressure box 41, and the pressure display element 5 is electrically connected to the hydraulic pressure sensing element.

[0049] Specifically, the hydraulic sensing element is used to generate an electrical signal according to the change of the liquid pressure in the pressure box 41, and transmit the electrical signal to the pressure display element 5; the liquid set in the pressure box 41 is water or oil.

[0050] In this optional embodiment, if Figure 5 As shown, the pressure box 41 is set to a hollow structure, which can be deformed by force, and liquid is set in the pressure box 41. In this way, when the pressure box 41 is deformed by pressure, the volume inside the pressure box 41 changes, and the hydraulic pressure value in the pressure box 41 changes. A hydraulic sensing element is provided in the pressure box 41, and the hydraulic sensing element can generate a hydraulic signal according to the change of liquid pressure in the pressure box 41. The pressure display part 5 is electrically connected to the hydraulic sensing element, so that it can receive the hydraulic signal and display the value. The value displayed by the pressure display part 5 is the hydraulic pressure value in the pressure box 41, and the pressure change of the pressure box 41 can be fed back through the change of the hydraulic pressure value in the pressure box 41.

[0051] like Figure 3 and Figure 5 As shown, optionally, the pressure sensor 4 also includes a mounting shell 43, which is mounted on the end face of the second bracket 3 facing away from the first bracket 2, and the pressure box 41 is mounted in the mounting shell 43, and the mounting shell 43 is set to open toward the first bracket 2 so that one end of the elastic structure 42 can extend into the mounting shell 43.

[0052] Specifically, the mounting shell 43 is a hollow structure with one end open, and may also be a U-shaped structure.

[0053] In this optional embodiment, if Figure 3 and Figure 5 As shown, in order to ensure the working stability of the pressure box 41, a mounting shell 43 is further provided on the end face of the second bracket 3 facing away from the first bracket 2, wherein the pressure box 41 is installed in the mounting shell 43, thereby protecting the pressure box 41 and ensuring the working stability of the pressure box 41; on this basis, the mounting shell 43 is opened toward the first bracket 2, so that one end of the elastic structure 42 can extend into the mounting shell 43 and abut against the pressure box 41, and at the same time, the other end of the elastic structure 42 can also be allowed to abut against the threaded fastener 22, thereby ensuring the performance of the spring guide wheel while allowing the pressure to be transmitted to the pressure box 41.

[0054] like Figure 5 As shown, optionally, the mounting shell 43 is provided with a through hole 431 for the cable 51 to pass through, and both ends of the cable 51 are connected to the pressure box 41 and the pressure display element 5 respectively.

[0055] Specifically, the cable 51 is introduced from the outside of the gas cabinet into the inside of the gas cabinet, and penetrates into the installation shell 43 .

[0056] In this optional embodiment, if Figure 5As shown, in order to ensure stable transmission of the pressure signal, a through hole 431 for the cable 51 to pass through is provided on the mounting shell 43, and the two ends of the cable 51 are respectively connected to the pressure box 41 and the pressure display element 5. With this arrangement, when the pressure box 41 is under pressure, the pressure signal can be transmitted to the pressure display element 5 through the cable 51, thereby ensuring stable transmission of the signal.

[0057] A gas cabinet provided in an embodiment of the utility model comprises the above-mentioned guide wheel.

[0058] like Figure 1 As shown, the gas cabinet in this embodiment further includes a piston 6 and a column 7. The guide wheel is mounted on the piston 6. The column 7 is provided with a track plate, and the guide wheel can move along the track plate.

[0059] The beneficial effects of the gas cabinet of this embodiment relative to the prior art are the same as those of the guide wheel described above, and will not be described in detail here.

[0060] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A guide wheel, characterized in that: Located between the piston (6) of the gas tank and the track plate of the column (7), the guide wheel includes a wheel body (1), a first bracket (2), a second bracket (3), a pressure sensor (4) and a pressure display (5); the wheel body (1) is rotatably mounted on the first bracket (2) and is used to run along the track plate; the pressure sensor (4) is mounted on the second bracket (3) and is abutted against the first bracket (2); the second bracket (3) is movably connected to the first bracket (2) and is used to be connected to the piston (6); the pressure display (5) is electrically connected to the pressure sensor (4).

2. The guide wheel according to claim 1, characterized in that: One end of the first bracket (2) is connected to the second bracket (3) for rotation about a first direction, the pressure sensor (4) abuts against the other end of the first bracket (2), and the first direction is parallel to the rotation axis of the wheel body (1).

3. The guide wheel according to claim 2, characterized in that: The first bracket (2) is provided with a storage groove (21) opening toward the second bracket (3); the pressure sensor (4) is mounted on the end surface of the second bracket (3) facing the first bracket (2) and is correspondingly placed in the storage groove (21).

4. The guide wheel according to claim 3, characterized in that: A threaded fastener (22) is installed on the first bracket (2), the threaded fastener (22) is located in the storage groove (21), and the threaded fastener (22) is used to rotate relative to the first bracket (2) to adjust the distance between the pressure sensor (4) and the threaded fastener (22).

5. The guide wheel according to claim 4, characterized in that: The pressure sensor (4) comprises a pressure box (41) and an elastic structure (42); the pressure box (41) is mounted on the second bracket (3) and abuts against one end of the elastic structure (42); the pressure box (41) is electrically connected to the pressure display element (5); the other end of the elastic structure (42) extends into the storage groove (21) and abuts against the threaded fastener (22).

6. The guide wheel according to claim 5, characterized in that: The elastic structure (42) comprises a spring (421) and a spring clamping cap (422); the spring (421) is mounted on the second bracket (3) via the spring clamping cap (422) and abuts against the pressure box (41); and the spring clamping cap (422) abuts against the threaded fastener (22).

7. The guide wheel according to claim 5, characterized in that: The pressure box (41) is a hollow structure and is used for deformation under pressure. Liquid and a hydraulic pressure sensing element are arranged in the pressure box (41), and the pressure display element (5) is electrically connected to the hydraulic pressure sensing element.

8. The guide wheel according to claim 5, characterized in that: The pressure sensor (4) further comprises a mounting shell (43), wherein the mounting shell (43) is mounted on the end face of the second bracket (3) facing away from the first bracket (2), the pressure box (41) is mounted in the mounting shell (43), and the mounting shell (43) is arranged with an opening toward the first bracket (2) so that one end of the elastic structure (42) can extend into the mounting shell (43).

9. The guide wheel according to claim 8, characterized in that: The mounting shell (43) is provided with a through hole (431) for the cable (51) to pass through, and two ends of the cable (51) are respectively connected to the pressure box (41) and the pressure display element (5).

10. A gas cabinet, characterized in that: It comprises a piston (6), a column (7) and a guide wheel as claimed in any one of claims 1 to 9.

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