A heat-insulating photovoltaic building facade

Abstract

The present invention relates to the field of building insulation structures, and more particularly to a heat-insulating photovoltaic building facade, comprising: a photovoltaic panel; a mounting frame; a support block mounted on the mounting frame; a limiting shaft mounted on the support block; a hanging plate fixedly connected to the rear of the photovoltaic panel; a functional panel mounted on the rear of the photovoltaic panel; a cover plate A rotatably mounted on the bottom of the photovoltaic panel; and a cover plate B rotatably connected to the top of the photovoltaic panel. By providing a functional panel, cover plate A, and cover plate B that can change state, the present invention enables the functional panel to dissipate heat in the summer while retaining heat to insulate the building in the winter. In other words, the present invention can switch between different seasons, rationally and without negative impacts utilizing the heat generated by the operation of the photovoltaic panel, thereby achieving efficient and comfortable energy utilization.

Description

Technical Field

[0001] The present invention relates to the field of building thermal insulation structures, and in particular to a heat-insulating photovoltaic building facade. Background Art

[0002] Photovoltaic buildings have emerged as a multifunctional architectural form in recent years, particularly in high-rise buildings. By integrating photovoltaic panels into the building structure and strategically placing them on the building's facade, they effectively utilize the building's façade for solar power generation. This design not only optimizes the use of building space but is also particularly suitable for medium- and large-scale cities, which often have densely populated areas and demanding electricity.

[0003] When using photovoltaic panels, we've discovered that the conversion of electricity into electricity generates a certain amount of heat. This heat is transferred to building surfaces, affecting the building's temperature. Specifically, in winter, this heat provides additional insulation, which is a positive impact on the building. However, in summer, the building absorbs this heat, causing it to heat up, potentially raising indoor temperatures. This can hinder social activities and increase the operating burden on cooling equipment like air conditioners, resulting in a negative impact on the building.

[0004] Therefore, in response to the above situation, we propose a photovoltaic building facade design that can control whether the heat generated during photovoltaic power generation is transferred to the building to achieve more efficient and comfortable energy utilization. Summary of the Invention

[0005] Based on the phenomena and problems raised in the background technology, the present invention proposes a heat-insulating photovoltaic building facade. The technical solution includes: photovoltaic panels;

[0006] Mounting frame, the mounting frame is fixed on the wall;

[0007] A support block is provided on the mounting frame, and at least two support blocks are provided;

[0008] The limiting shaft is arranged on the support block, and the size of the end of the front portion of the limiting shaft is larger than the diameter of the limiting shaft;

[0009] The hanging plate is fixedly connected to the rear of the photovoltaic panel, the limiting shaft can hook the hanging plate, and the support block can support the hanging plate;

[0010] The functional panels are set at the rear of the photovoltaic panels. Two functional panels form a functional panel group. There are at least four functional panel groups at the rear of the photovoltaic panels. Each functional panel group can be controlled to change the strength of its own heat dissipation capacity.

[0011] Rotate the sealing plate A provided at the bottom of the photovoltaic panel;

[0012] Rotate the sealing plate B connected to the top of the photovoltaic panel. The rotation of sealing plates A and B can control the opening and closing of the space between the photovoltaic panel and the wall. When sealing plates A and B close the space, they will cooperate with the functional panel group in the weak heat dissipation state to retain heat. When sealing plates A and B open the space, they will cooperate with the functional panel group in the strong heat dissipation state to dissipate heat.

[0013] A further technical solution is that each functional board is provided with a through slot. When the through slots on two functional boards in each functional board group are aligned, the heat dissipation capacity of the functional board group will be weakened. When the functional boards in each group are staggered and the through slots are closed, the heat dissipation capacity of the functional board group will be strengthened. One functional board in each group of functional boards is fixedly connected to the photovoltaic panel.

[0014] Also included: a mounting ring fixedly connected to one of the function boards in each group of function boards;

[0015] A guide shaft fixedly connected to another function board in each set of function boards, the guide shaft being slidably connected to the mounting ring;

[0016] A spring A is sleeved on the guide shaft, one end of the spring A is fixedly connected to the mounting ring, and the other end is fixedly connected to the guide shaft. The spring A enables a movable functional board in each group of functional boards to contact the wall.

[0017] A further technical solution is to further include: a fixing frame fixedly connected to the bottom of the photovoltaic panel, and the sealing plate A is rotatably connected to the fixing frame;

[0018] Rotate the connecting plate A connected to the sealing plate A;

[0019] The connecting plate B connected to the connecting plate A is rotated. The movement of the connecting plate B can control the rotation of the connecting plate A and the closing plate A. The end of the connecting plate B can contact the wall.

[0020] A further technical solution is to further include: a spring B fixedly connected between the sealing plate B and the photovoltaic panel;

[0021] A top frame is arranged on the top of the mounting frame, and an inclined surface is provided on the top frame, and the sealing plate B can contact the inclined surface of the top frame.

[0022] A further technical solution is that the front side of the support block is provided with an arcuate contact surface inclined downward, the bottom of the hanging plate is provided with an arcuate bottom surface, the limiting shaft is threadedly connected to the support block, and the rotation of the limiting shaft will move forward and backward relative to the support block;

[0023] Also included: a drive fixedly connected within the support block;

[0024] The slotted shaft is fixedly connected to the drive output end and is slidably connected in the limiting shaft.

[0025] A further technical solution is that it further comprises: a roller rotatably connected to the support block, the roller being arranged on the arc-shaped contact surface of the support block;

[0026] Rotate the ball connected to the rear side of the limit shaft end;

[0027] Rotate the roller connected to the end of connecting plate B.

[0028] A further technical solution is that a slide groove is opened on the front side of the mounting frame, the support block is slidably connected to the slide groove, and the top frame is slidably connected to the mounting frame;

[0029] It also includes: a fixing bolt A provided on the support block;

[0030] The fixing bolts B are provided on the mounting bracket.

[0031] A further technical solution is to further include: a level meter fixedly connected to the mounting frame.

[0032] The beneficial effects that can be achieved by the present invention are as follows: by providing functional panels, sealing panels A and sealing panels B that can change their states, the present invention can use the functional panels to dissipate heat in summer, while retaining heat to keep the building warm in winter. That is, the present invention can switch according to the season and utilize the heat generated by the operation of the photovoltaic panels reasonably and without negative impact, thereby achieving efficient and comfortable energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention when it is installed on a building wall.

[0034] Figure 2 This is a separation diagram of the connection structure when the present invention is unfolded.

[0035] Figure 3 This is a separation diagram of the connection structure of the photovoltaic panel in the present invention.

[0036] Figure 4 It is a side view of the connection structure of the support block, the limiting shaft and the hanging plate in the present invention.

[0037] Figure 5 This is a schematic diagram of the position structure of the functional panel on the photovoltaic panel in the present invention.

[0038] Figure 6 Schematic diagram of the structure of the three states of the functional board in the present invention.

[0039] Figure 7 for Figure 5 A local enlarged schematic diagram of point A in the middle.

[0040] Figure 8 Schematic diagram of the position structure of the sealing plate A in the present invention.

[0041] Figure 9 Schematic diagram of the connection structure after the sealing plate A is unfolded in the present invention.

[0042] Figure 10 Schematic diagram of the connection structure of the sealing plate B in the present invention.

[0043] Figure 11 This is a schematic diagram of the position structure of the support block, the limiting shaft and the hanging plate in the present invention.

[0044] Figure 12 This is a separation diagram of the connection structure between the support block and the limiting shaft in the present invention.

[0045] Figure 13 This is a schematic diagram of the position structure of the level meter in the present invention.

[0046] The marks in the accompanying drawings are: 0-wall, 1-photovoltaic panel, 101-mounting frame, 102-support block, 103-limiting shaft, 104-hanging plate, 105-roller, 106-drive, 107-slotted shaft, 108-rolling ball, 109-slide, 1010-fixing bolt A, 1011-mounting hole, 2-function board, 201-through slot, 202-mounting ring, 203-guide shaft, 204-spring A, 3-closing plate A, 301-fixing frame, 302-connecting plate A, 303-connecting plate B, 304-roller, 4-closing plate B, 401-spring B, 402-top frame, 403-fixing bolt B, 5-level meter. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0048] Example: A thermal insulation photovoltaic building facade, see Figures 1-4, including: a photovoltaic panel 1, which is used to convert solar energy into electrical energy for use; a mounting frame 101, with mounting holes 1011 provided at the four corners of the mounting frame 101, and the mounting frame 101 is fixed to the wall 0 at the mounting holes 1011 using expansion screws; a slide groove 109 is provided on the front side of the mounting frame 101; a support block 102 is slidably installed on the mounting frame 101 through the slide groove 109, and the support block 102 is provided with four, which are respectively provided at the four corners of the front side of the mounting frame 101, and the front side of the support block 102 is provided with an arc-shaped contact surface inclined downward; a fixing bolt A1010 installed at the bottom of the support block 102 is rotatably connected to the mounting frame 101, and the fixing bolt A1010 is threadedly connected to the mounting frame 101 to fix the support block 102 to the mounting frame 101; a support block 102 is provided on the support block 101 The limiting shaft 103 on 02, the end size of the front part of the limiting shaft 103 is larger than the diameter size of the limiting shaft 103; the hanging plate 104 is fixedly installed on the photovoltaic panel 1, and the bottom of the hanging plate 104 is provided with an arc-shaped bottom surface, and the middle part of the hanging plate 104 is provided with a slot. The slot of the hanging plate 104 is inserted into the limiting shaft 103, so that the limiting shaft 103 can hook the hanging plate 104, and the support block 102 can support the hanging plate 104, and its arc-shaped contact surface will make the hanging plate 104 have a tendency to move forward, and the end of the limiting shaft 103 limits the position of the hanging plate 104 from the front part of the hanging plate 104. Therefore, the support block 102 cooperates with the limiting shaft 103 to stably fix the photovoltaic panel 1 on the mounting frame 101. This method can be easily disassembled to facilitate the inspection and maintenance of the photovoltaic panel 1.

[0049] See Figure 5-Figure 7 , also includes: a functional board 2 arranged at the rear of the photovoltaic panel 1, two functional boards 2 form a functional board group, and there are ten functional board groups arranged at the rear of the photovoltaic panel 1. One functional board 2 in each functional board group will be fixed to the photovoltaic panel 1, and each functional board 2 is provided with a through groove 201, especially, except for the two groups of functional boards 2 on the left and right sides, these two groups of functional boards 2 will close the left and right sides of the space between the photovoltaic panel 1 and the wall 0. When the two functional boards 2 in each group of functional boards 2 slide relative to each other, the relative position between the through grooves 201 on the two functional boards 2 in the functional board group will be controlled to change. Specifically, when the through grooves 201 are aligned, the heat dissipation capacity of the functional board group will be increased. Weak, when two function boards 2 in the function board group are staggered and the through groove 201 is blocked, the heat dissipation capacity of the function board group will be strong; a mounting ring 202 is fixedly mounted on one function board 2 in each group of function boards 2; a guide shaft 203 is fixedly mounted on the other function board 2 in each group of function boards 2, and the guide shaft 203 and the mounting ring 202 are slidably mounted, so that the two function boards 2 in each group of function boards 2 are slidably mounted; a spring A204 is sleeved on the guide shaft 203, one end of the spring A204 is fixedly mounted on the guide shaft 203, and the other end is fixedly mounted on the mounting ring 202. The action of the spring A204 will make the movable function board 2 in each group of function boards 2 press against the wall 0.

[0050] See Figure 6 (1) The through slots 201 of the two functional panels 2 in each set of functional panels 2 are aligned. At this time, the spring A204 is compressed, and the space between the photovoltaic panel 1 and the wall 0 is penetrated by the through slots 201. The heat emitted by the photovoltaic panel 1 can be concentrated in this part of the space. (2) The through slots 201 of the two functional panels 2 in each set of functional panels 2 are staggered. The spring A204 returns to its natural state, and the space between the photovoltaic panel 1 and the wall 0 increases. At this time, the functional panel group will separate the space. When the photovoltaic panel 1 moves backward, the distance and space between the photovoltaic panel 1 and the wall 0 decrease. At this time, the two functional panels 2 in each set of functional panels 2 will slide relative to each other, so that the through slots 201 of the two functional panels 2 in each set of functional panels 2 are aligned, and the spring A204 is compressed. When the photovoltaic panel 1 moves forward, the spring A204 will slide the two functional panels 2 in each set of functional panels 2 back to the original position, so that the through slots 201 of the two functional panels 2 in each set of functional panels 2 are blocked.

[0051] See Figure 8-Figure 9 , and also includes: a fixing frame 301 fixedly installed at the bottom of the photovoltaic panel 1; a closing plate A3 rotatably installed on the fixing frame 301, the rotation of the closing plate A3 will control the opening and closing of the space between the photovoltaic panel 1 and the wall 0 from the bottom, and a total of three closing plates A3 are provided on the fixing frame 301; a connecting plate A302 rotatably installed on each closing plate A3; a connecting plate B303 rotatably installed between each connecting plate A302, the movement of the connecting plate B303 will control the synchronous rotation of the three closing plates A3 through the connecting plate A302, and the end of the connecting plate B303 can contact the wall 0; a roller 304 installed at the end of the connecting plate B303 is rotated, and the connecting plate B303 is in rolling contact with the wall 0 through the roller 304. When the photovoltaic panel 1 moves forward, the sealing plate A3 will rotate downward under the action of gravity, opening the space between the photovoltaic panel 1 and the wall 0, and the connecting plate A302 will be rotated, causing the connecting plate B303 to move backward; conversely, when the photovoltaic panel 1 moves backward, the connecting plate B303 will be pressed against the wall 0 and moved forward, and the connecting plate B303 will rotate the sealing plate A3 through the connecting plate A302, thereby re-closing the space between the photovoltaic panel 1 and the wall 0, and the roller 304 will make the contact between the connecting plate B303 and the wall 0 smoother.

[0052] See Figure 10 and Figure 11The system further includes: a cover plate B4 rotatably mounted on top of the photovoltaic panel 1, the rotation of which controls the opening and closing of the space between the photovoltaic panel 1 and the wall 0 from the top; a spring B401 fixedly mounted between the cover plate B4 and the photovoltaic panel 1; a top frame 402 slidably mounted on top of the mounting frame 101, the front of the top frame 402 being provided with an inclined surface, with which the cover plate B4 can contact; and fixing bolts B403 threadedly mounted on the mounting frame 101, the fixing bolts B403 abutting against the top frame 402. The fixing bolts B403 secure the top frame 402 to the mounting frame 101 by increasing the pressure between the top frame 402 and the mounting frame 101. When the photovoltaic panel 1 moves forward and downward, the cover plate B4 rotates upward under the obstruction of the top frame 402, opening the space between the photovoltaic panel 1 and the wall 0, and the spring B401 is stretched. Conversely, when the photovoltaic panel 1 moves backward and upward, the spring B401 resets and reverses the cover plate B4, thereby closing the space between the photovoltaic panel 1 and the wall 0.

[0053] See Figure 11-12 The limiting shaft 103 is threadedly mounted on the support block 102, and also includes: a roller 105 rotatably mounted on the support block 102, the roller 105 is set on the arc contact surface of the support block 102, so that the support block 102 and the hanging plate 104 are in rolling contact; a drive 106 fixedly mounted in the support block 102; a straight shaft 107 fixedly mounted on the output end of the drive 106, and the straight shaft 107 is slidably mounted in the limiting shaft 103; a ball 108 rotatably connected to the rear side of the end of the limiting shaft 103; the ball 108 causes the limiting shaft 103 to be in rolling contact with the hanging plate 104. The drive 106 will rotate the limiting shaft 103 through the straight shaft 107, so the limiting shaft 103 will move forward relative to the support block 102 and the straight shaft 107, that is, the front limiting point of the hanging plate 104 of the limiting shaft 103 moves forward, and the hanging plate 104 will drive the photovoltaic panel 1 to move forward and downward under the action of the gravity of the photovoltaic panel 1 and the guidance of the arc-shaped contact surface of the support block 102. Conversely, when the limiting shaft 103 moves backward, the photovoltaic panel 1 will move backward and upward.

[0054] See Figure 13 , further comprising: a level meter 5 fixedly mounted on the mounting frame 101. Through the level meter 5, the installer can quickly observe the installation angle of the mounting frame 101 to prevent the photovoltaic panel 1 from being affected by the installation tilt or the center of gravity shift, which affects its installation stability.

[0055] To install this photovoltaic building facade: Use expansion screws to securely mount the mounting frame 101 to the wall 0. Then, use the hanging plate 104 to stably secure the photovoltaic panel 1 to the mounting frame 101, completing the installation of the photovoltaic panel 1. At this point, the movable functional panel 2 in each group of functional panels 2 will be against the wall 0, so that the through slots 201 between each group of functional panels 2 are aligned. Combined with the interaction between the sealing panels A3, sealing panels B4, and the functional panel groups on both sides without through slots 201, they will jointly seal the four sides of the space between the photovoltaic panel 1 and the wall 0. Therefore, the heat generated during the operation of the photovoltaic panel 1 will be accumulated in this space and transferred to the building, thereby using this heat for building insulation, making this photovoltaic building facade suitable for winter use.

[0056] In summer, the control drive 106 rotates the straight shaft 107 and the limiting shaft 103, so that the limiting shaft 103 moves forward, and cooperates with the support block 102, so that the photovoltaic panel 1 will move forward and downward, and the distance between the photovoltaic panel 1 and the wall 0 increases, and the space increases, then the sealing plate A3 rotates downward, and the sealing plate B4 is rotated upward by the top frame, thereby opening the space, so that the airflow can flow in the space, and the through grooves 201 between each group of functional panels 2 are blocked. At this time, the functional panel group separates the space between the photovoltaic panel 1 and the wall 0, and the functional panel 2 is equivalent to increasing the contact area between the airflow and the photovoltaic panel 1, thereby accelerating the dissipation of the heat generated by the photovoltaic panel 1, that is, the airflow can take away the heat in the space faster, thereby improving the heat dissipation effect and reducing the heat effect on the building, and reducing the negative impact of the photovoltaic panel 1 on the building. Therefore, this photovoltaic building facade can also be applied in summer;

[0057] When it is necessary to adjust the photovoltaic building facade from a state for use in summer to a state for use in winter, the control drive 106 reverses the straight axis 107 and the limiting axis 103. The limiting axis 103 cooperates with the support block 102 to drive the photovoltaic panel 1 backward and upward. The distance between the photovoltaic panel 1 and the wall 0 is reduced, and the space is reduced, so the closing plate A3 and the closing plate B4 will be reversed to close the space, and the through grooves 201 between each group of functional panels 2 are connected. At this time, the photovoltaic building facade is suitable for use in winter.

[0058] When fixing the mounting frame 101, using the level meter 5 can quickly observe whether the mounting frame 101 is installed tilted, thereby improving the installation effect of the photovoltaic building facade and facilitating installation; and after fixing the mounting frame 101, when the height position of the photovoltaic panel 1 needs to be adjusted, it is only necessary to adjust the position of the support block 102 and adjust the top frame 402. In this way, when adjusting the photovoltaic panel 1, there is no need to adjust the mounting frame 101 that has been stably installed, thereby improving the use effect of the photovoltaic building facade.

[0059] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A thermal insulation photovoltaic building facade, characterized in that: include: Photovoltaic panels (1), which convert solar energy into electrical energy for use; A mounting frame (101), the mounting frame (101) is fixed on the wall (0); A support block (102) is provided on the mounting frame (101), and at least two support blocks (102) are provided; A limiting shaft (103) is arranged on the support block (102), wherein the size of the end of the front portion of the limiting shaft (103) is larger than the diameter of the limiting shaft (103); A hanging plate (104) is fixedly connected to the rear of the photovoltaic panel (1), the limiting shaft (103) can hook the hanging plate (104), and the support block (102) can support the hanging plate (104), and the two cooperate to fix the photovoltaic panel (1) on the mounting frame (101); A functional panel (2) is arranged at the rear of the photovoltaic panel (1), with every two functional panels (2) forming a functional panel group. At least four functional panel groups are arranged at the rear of the photovoltaic panel (1), and each functional panel group can be controlled to change the strength of its own heat dissipation capability. Rotating a sealing plate A (3) disposed at the bottom of the photovoltaic panel (1); The sealing plate B (4) connected to the top of the photovoltaic panel (1) is rotated. The sealing plate A (3) and the sealing plate B (4) can control the opening and closing of the space between the photovoltaic panel (1) and the wall (0); Each functional board (2) is provided with a through slot (201). When the through slots (201) on two functional boards (2) in each functional board group are aligned, the heat dissipation capability of the functional board group is weakened. When the two functional boards (2) in each functional board group (2) are staggered and the through slots (201) are closed, the heat dissipation capability of the functional board group is strengthened. One functional board (2) in each functional board group (2) is fixedly connected to the photovoltaic panel (1). It also includes: a mounting ring (202) fixedly connected to one of the functional boards (2) in each group of functional boards (2); A guide shaft (203) fixedly connected to another function board (2) in each group of function boards (2), the guide shaft (203) being slidably connected to the mounting ring (202); A spring A (204) is sleeved on the guide shaft (203), one end of the spring A (204) being fixedly connected to the mounting ring (202), and the other end being fixedly connected to the guide shaft (203). The spring A (204) enables a movable functional board (2) in each group of functional boards (2) to contact the wall surface (0), so that the photovoltaic panel (1) moves forward and backward, thereby controlling the relative sliding between the two functional boards (2) in each group of functional boards (2).

2. The heat-insulating photovoltaic building facade according to claim 1, characterized in that: Also includes: A fixing frame (301) is fixedly connected to the bottom of the photovoltaic panel (1), and the sealing plate A (3) is rotatably connected to the fixing frame (301); Rotating the connecting plate A (302) connected to the sealing plate A (3); The connecting plate B (303) connected to the connecting plate A (302) is rotated. The movement of the connecting plate B (303) can control the rotation of the connecting plate A (302) and the sealing plate A (3). The end of the connecting plate B (303) can contact the wall surface (0), so that the photovoltaic panel (1) moves forward and backward to control the movement of the connecting plate B (303).

3. The heat-insulating photovoltaic building facade according to claim 2, characterized in that: Also includes: A spring B (401) fixedly connected between the sealing plate B (4) and the photovoltaic panel (1); A top frame (402) is arranged on the top of the mounting frame (101), and a slope is provided on the top frame (402). The sealing plate B (4) can contact the slope of the top frame (402), so that the photovoltaic panel (1) can move forward and backward to control the rotation of the sealing plate B (4).

4. The heat-insulating photovoltaic building facade according to claim 3, characterized in that: The front side of the support block (102) is provided with an arc-shaped contact surface inclined downward, and the bottom of the hanging plate (104) is provided with an arc-shaped bottom surface. The limiting shaft (103) is threadedly connected to the support block (102). The limiting shaft (103) rotates to move forward and backward relative to the support block (102), so that the hanging plate (104) and the photovoltaic panel (1) can move forward and backward; Also included: a drive (106) fixedly connected within the support block (102); A straight shaft (107) is fixedly connected to the output end of the driving (106), and the straight shaft (107) is slidably connected in the limiting shaft (103) so that the driving (106) can control the limiting shaft (103) to rotate.

5. The heat-insulating photovoltaic building facade according to claim 4, characterized in that: Also includes: A roller (105) rotatably connected to the support block (102), wherein the roller (105) is arranged on an arc-shaped contact surface of the support block (102); Rotating a rolling ball (108) connected to the rear side of the end of the limiting shaft (103); The roller (304) connected to the end of the connecting plate B (303) is rotated.

6. The heat-insulating photovoltaic building facade according to claim 5, characterized in that: A slide groove (109) is provided on the front side of the mounting frame (101), the support block (102) is slidably connected to the slide groove (109), and the top frame (402) is slidably connected to the mounting frame (101); It also includes: a fixing bolt A (1010) provided on the support block (102) for fixing the position of the support block (102); A fixing bolt B (403) is provided on the mounting frame (101) for fixing the position of the top frame (402).

7. The heat-insulating photovoltaic building facade according to claim 6, characterized in that: Also includes: A level meter (5) is fixedly connected to the mounting frame (101).

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