Building mechanical and electrical installation fixing device

Abstract

The invention relates to the technical field of building mechanical and electrical installation, in particular to a building mechanical and electrical installation fixing device which comprises a bottom plate, an installation body and a positioning body, the bottom of the bottom plate is fixedly connected with a plurality of supporting strips which are longitudinally arranged and transversely and evenly distributed, and the top of the bottom plate is fixedly connected with supporting rods which are evenly distributed. A mounting main body is arranged on the outer side of the supporting rod, through holes which are evenly distributed are formed in the bottom plate, a positioning main body is arranged in the through holes formed in the bottom plate in a penetrating mode, and grid blocking strips are arranged on the left side and the right side of the bottom plate. Through the arrangement of the bottom plate, the supporting strips, the supporting plate, the blocking strips, the supporting rods, the mounting body, the through holes, the positioning body, the inserting strips and the inserting grooves, the mounted electromechanical equipment can be supported under the action of the supporting strips, the bottom plate, the supporting rods and the mounting body, the bottom of the electromechanical equipment does not make contact with the supporting face, air circulation is facilitated, and the service life of the electromechanical equipment is prolonged. And the use of the electromechanical equipment is more stable.

Description

Technical Field

[0001] This application relates to the field of building electromechanical installation technology, specifically to a building electromechanical installation fixing device. Background Technology

[0002] Building electromechanical systems, also known as building electromechanical engineering or MEP, refers to all mechanical and electrical systems installed in a building to provide a comfortable, safe, and efficient environment. Building electromechanical systems include HVAC equipment, electrical equipment, fire protection systems, and water supply and drainage systems. To facilitate the installation of building electromechanical systems, they are usually installed using fixing devices.

[0003] Traditional building electromechanical installation and fixing devices typically involve placing the electromechanical equipment directly on a support surface and then installing it with bolts. In this case, the equipment is in direct contact with the support surface, resulting in poor air circulation at the bottom of the equipment and affecting heat dissipation. Therefore, a new building electromechanical installation and fixing device is proposed to address the above problems. Summary of the Invention

[0004] The purpose of this application is to provide a building electromechanical installation and fixing device to solve the problem of poor air circulation at the bottom affecting heat dissipation when installing upper electromechanical equipment.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A building electromechanical installation and fixing device includes a base plate, an installation body, and a positioning body. The bottom of the base plate is fixedly connected to a plurality of longitudinally arranged and transversely evenly distributed support bars. The top of the base plate is fixedly connected to a uniformly distributed support rod. The installation body is arranged on the outer side of the support rod. The base plate has uniformly distributed through holes. The positioning body is inserted through the through holes of the base plate. The left and right sides of the base plate are provided with grid strips. The bottom of the grid strips is fixedly connected to a support plate. The top side of the support plate is tightly fitted to the base plate.

[0007] Preferably, the bottom left and right sides of the base plate are fixedly connected with evenly distributed inserts, and the top left and right sides of the support plate are provided with evenly distributed slots, with inserts provided in the slots on one side of the support plate.

[0008] Preferably, the mounting body includes a support plate, a housing, and reinforcing strips. The bottom of the support plate is fixedly connected to a housing that is evenly distributed. The housing is disposed on the inner and outer sides of the top of the support rod. The support plate has mounting holes that are evenly distributed laterally. The top front and rear sides of the support plate are fixedly connected to reinforcing strips that are arranged laterally.

[0009] Preferably, the mounting body further includes a mounting frame, a top plate, bolts, a first nut, a limiting plate, a mounting block, and a rubber block. The mounting frame is disposed on the outside of the support plate. A first nut is fixedly connected to the bottom of the mounting frame. A bolt that penetrates the bottom of the mounting frame is internally threaded into the first nut. A limiting plate is rotatably connected to the top of the bolt. The top of the limiting plate is tightly fitted to the support plate. A top plate is mounted on the top of the mounting frame by screws. A mounting block is fixedly connected to the top of the top plate. A rubber block is fixedly connected to one side of the mounting block.

[0010] Preferably, the mounting body further includes a tensioning block, which is fixedly connected to the bottom of the top plate. The bottom of the tensioning block is in contact with the support plate, and the front and rear sides of the tensioning block are respectively in contact with two reinforcing strips.

[0011] Preferably, the mounting body further includes a mounting plate, a sliding plate, an adjusting threaded rod, and a second nut. Two sliding plates, arranged longitudinally and distributed vertically, are fixedly connected to one side of the mounting plate. The sliding plates pass through the mounting block. An adjusting threaded rod is fixedly connected to one side of the mounting plate. Sliding plates are provided on both the upper and lower sides of the adjusting threaded rod. The adjusting threaded rod passes through the mounting block. The end of the adjusting threaded rod away from the mounting plate is threaded with a second nut on both the inner and outer sides. A vertically arranged rubber strip, evenly distributed longitudinally, is fixedly connected to one side of the mounting plate that is fixedly connected to the sliding plate.

[0012] Preferably, the positioning body includes a fixed rod, a fixed threaded rod, a deformation shell, a mounting sleeve, a limiting ring, and a third nut. The fixed threaded rod is fixedly connected to the top of the fixed rod, and a mounting sleeve is provided on the outside of the fixed threaded rod. A limiting ring is fixedly connected to the top of the mounting sleeve, and the limiting ring is located on the outside of the fixed threaded rod. The bottom of the limiting ring is tightly fitted to the base plate. The bottom of the fixed rod is truncated cone-shaped, and a deformation shell is provided on the outside of the fixed rod. The deformation shell has uniformly distributed deformation grooves on the outside of its bottom. The fixed threaded rod and the mounting sleeve are inserted through a through hole in the base plate.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] 1. In this application, the base plate, support strips, support plates, grid strips, support rods, mounting body, through holes, positioning body, inserts, and slots provide support for the installed electromechanical equipment under the action of the support strips, base plate, support rods, and mounting body, ensuring that the bottom of the electromechanical equipment does not contact the support surface, facilitating air circulation, and making the electromechanical equipment more stable in use. The support plates can support the left and right sides of the base plate, and multiple support plates can be connected in a row to facilitate the uniform installation of similar electromechanical equipment. The inserts can prevent the base plate from moving, making the base plate installation neater and more stable. The positioning body can install the base plate on the support surface, at which time the support strips can support the base plate.

[0015] 2. In this application, by using a support plate, casing, mounting holes, reinforcing strips, mounting frame, top plate, bolts, first nut, limit plate, tension block, mounting block, mounting plate, rubber block, rubber strip, sliding plate, adjusting threaded rod, and second nut, the electromechanical equipment can be installed above the reinforcing strip through the mounting holes of the support plate. The reinforcing strip strengthens the support plate with mounting holes, improving its support effect. Simultaneously, the casing and support rod support the support plate and electromechanical equipment. The mounting frame moves the top plate and mounting block. After the rubber block on one side of the mounting block contacts the electromechanical equipment, the bolts and first nut push the limit plate to fit tightly against the support plate, thereby securing the equipment. The mounting frame is installed on the outside of the support plate. At this time, the mounting frame pushes the tension block to fit tightly against the support plate through the top plate. The top plate and the support plate then squeeze the tension block, making the outside of the tension block fit tightly against the reinforcing strip, thereby preventing the top plate from moving. This makes the installation of the top plate and the mounting frame more stable. At the same time, the top plate further limits the electromechanical equipment through the rubber block of the mounting block shell. Turning the second nut can drive the mounting plate to move through the adjusting threaded rod. The sliding plate can make the movement of the second mounting plate more stable. The second mounting plate fits tightly against the electromechanical equipment through the rubber strip, which can further limit the electromechanical equipment, allowing the electromechanical equipment to be installed freely, while making the installation of the electromechanical equipment more stable.

[0016] 3. In this application, through the provided through hole, fixing rod, fixing threaded rod, deformable shell, mounting sleeve, limiting ring, deformable groove, and third nut, the third nut can be directly rotated. The third nut drives the fixing threaded rod to move upward, and the fixing threaded rod drives the fixing rod to move upward. The fixing rod, through the bottom frustum-shaped setting, pushes the deformable shell to deform under the action of the deformable groove. The deformed deformable shell is stuck in the hole opened in the support surface, thereby realizing the installation of the base plate. The base plate, through the opened through hole, allows the bottom frustum setting of the fixing rod to pass through the base plate, which facilitates the installation of the fixing rod. The provided mounting sleeve and limiting ring can limit the top of the deformable shell, which facilitates the fixed rod's frustum setting to push the deformable shell to deform. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application;

[0018] Figure 2 This is a schematic diagram of the installation structure of the main body of the application.

[0019] Figure 3 This is a schematic diagram of the installation structure of the limit plate in this application;

[0020] Figure 4 This is a schematic diagram of the mounting structure of the mounting plate in this application;

[0021] Figure 5 A schematic diagram of the installation structure for the positioning subject of this application;

[0022] Figure 6 For this application Figure 5 A schematic diagram of the structure at point A;

[0023] Figure 7 This is a schematic diagram of the installation structure of the fixing rod in this application.

[0024] In the diagram: 1. Base plate; 2. Support strip; 3. Support plate; 4. Barrier strip; 5. Support rod; 6. Mounting body; 601. Support plate; 602. Sleeve; 603. Mounting hole; 604. Reinforcing strip; 605. Mounting frame; 606. Top plate; 607. Bolt; 608. First nut; 609. Limiting plate; 610. Tensioning block; 611. Mounting block; 612. Mounting plate; 613. Rubber block; 614. Rubber strip; 615. Slide plate; 616. Adjusting threaded rod; 617. Second nut; 7. Through hole; 8. Positioning body; 801. Fixing rod; 802. Fixing threaded rod; 803. Deformation shell; 804. Mounting sleeve; 805. Limiting ring; 806. Deformation groove; 807. Third nut; 9. Insert strip; 10. Slot. Detailed Implementation

[0025] Please see Figure 1-7 This application provides a technical solution:

[0026] A building electromechanical installation and fixing device includes a base plate 1, an installation body 6, and a positioning body 8. Several longitudinally arranged and laterally evenly distributed support bars 2 are fixedly connected to the bottom of the base plate 1. Evenly distributed support rods 5 are fixedly connected to the top of the base plate 1. The installation body 6 is located on the outer side of the support rods 5. Evenly distributed through holes 7 are formed inside the base plate 1, and the positioning body 8 passes through each of the through holes 7. Grid strips 4 are provided on both the left and right sides of the base plate 1. Support plates 3 are fixedly connected to the bottom of the grid strips 4. One side of the top of the support plate 3 is tightly fitted to the base plate 1. Evenly distributed inserts 9 are fixedly connected to the bottom left and right sides of the base plate 1. Evenly distributed slots 10 are formed on the top left and right sides of the support plate 3. A slot 10 is provided in one side of the support plate 3, and a strip 9 is provided in the slot. With this setting, the installed electromechanical equipment can be supported by the support strip 2, the base plate 1, the support rod 5 and the mounting body 6, so that the bottom of the electromechanical equipment does not contact the support surface, which facilitates air circulation and makes the electromechanical equipment more stable. The support plate 3 can support the left and right sides of the base plate 1. At the same time, the base plate 1 can be installed on the top of the support plate 3. Multiple support plates 3 can be connected in a row to facilitate the uniform installation of the same type of electromechanical equipment. The strip 9 can prevent the base plate 1 from moving, so that the base plate 1 is installed more neatly and stably. The positioning body 8 can install the base plate 1 on the support surface. At this time, the support strip 2 can support the base plate 1.

[0027] like Figure 1-4As shown, the mounting body 6 includes a support plate 601, a housing 602, and reinforcing strips 604. The bottom of the support plate 601 is fixedly connected to evenly distributed housings 602, which are located on the inner and outer sides of the top of the support rod 5. The support plate 601 has horizontally evenly distributed mounting holes 603. Horizontally arranged reinforcing strips 604 are fixedly connected to the front and rear sides of the top of the support plate 601. The mounting body 6 also includes a mounting frame 605, a top plate 606, bolts 607, a first nut 608, a limiting plate 609, a mounting block 611, and a rubber block 613. The mounting frame 605 is located on the outer side of the support plate 601. The bottom of the mounting frame 605 is fixedly connected to a first nut 608, and the first nut 608 is internally threaded with a bolt 604 that penetrates the bottom of the mounting frame 605. 07. A limiting plate 609 is rotatably connected to the top of bolt 607. The top of the limiting plate 609 is tightly fitted to the support plate 601. A top plate 606 is installed on the top of the mounting frame 605 by screws. An mounting block 611 is fixedly connected to the top of the top plate 606. A rubber block 613 is fixedly connected to one side of the mounting block 611. The mounting body 6 also includes a tensioning block 610. A tensioning block 610 is fixedly connected to the bottom of the top plate 606. The bottom of the tensioning block 610 is fitted to the support plate 601. The front and rear sides of the tensioning block 610 are respectively fitted to two reinforcing strips 604. The mounting body 6 also includes a mounting plate 612, a sliding plate 615, an adjusting threaded rod 616, and a second nut 617. Two sliding plates arranged longitudinally and distributed vertically are fixedly connected to one side of the mounting plate 612. 615, a sliding plate 615 penetrates the mounting block 611. An adjusting threaded rod 616 is fixedly connected to one side of the mounting plate 612. Sliding plates 615 are provided on both the upper and lower sides of the adjusting threaded rod 616. The adjusting threaded rod 616 penetrates the mounting block 611. A second nut 617 is threaded onto the inner and outer sides of the end of the adjusting threaded rod 616 away from the mounting plate 612. Vertically arranged and evenly distributed rubber strips 614 are fixedly connected to the side of the mounting plate 612 where the sliding plate 615 is fixedly attached. This arrangement allows the electromechanical equipment to be mounted above the reinforcing strips 604 through the mounting holes 603 of the support plate 601. The reinforcing strips 604 reinforce the support plate 601 with the mounting holes 603, improving the support effect of the support plate 601. Simultaneously, the sleeve 6... 02 and support rod 5 can support the pallet 601 and the electromechanical equipment. The mounting frame 605 can drive the top plate 606 and mounting block 611 to move. After the rubber block 613 on one side of the mounting block 611 comes into contact with the electromechanical equipment, the bolt 607 and the first nut 608 can push the limiting plate 609 to fit tightly against the pallet 601, thereby installing the mounting frame 605 on the outside of the pallet 601. At this time, the mounting frame 605 pushes the tensioning block 610 to fit tightly against the pallet 601 through the top plate 606. At this time, the top plate 606 and the pallet 601 squeeze the tensioning block 610, so that the outside of the tensioning block 610 fits tightly against the reinforcing strip 604, thereby preventing the top plate 606 from moving, thus making the installation of the top plate 606 and the mounting frame 605 more stable.Meanwhile, the top plate 606 further limits the movement of the electromechanical equipment via the mounting block 611 and the rubber block 613. Rotating the second nut 617 allows the mounting plate 612 to move via the adjusting threaded rod 616. The sliding plate 615 further stabilizes the movement of the second mounting plate 612. The second mounting plate 612, through the rubber strip 614, fits tightly against the electromechanical equipment, further limiting its movement and allowing for free and stable installation.

[0028] like Figure 1 , 2 As shown in Figures 5, 6, and 7, the positioning body 8 includes a fixed rod 801, a fixed threaded rod 802, a deformation shell 803, a mounting sleeve 804, a limiting ring 805, and a third nut 807. The fixed threaded rod 802 is fixedly connected to the top of the fixed rod 801. A mounting sleeve 804 is provided on the outside of the fixed threaded rod 802. A limiting ring 805 is fixedly connected to the top of the mounting sleeve 804. The limiting ring 805 is located on the outside of the fixed threaded rod 802, and its bottom is tightly fitted to the base plate 1. The bottom of the fixed rod 801 is truncated cone-shaped. A deformation shell 803 is provided on the outside of the fixed rod 801. The deformation shell 803 has evenly distributed deformation grooves 806 on its bottom outer side. The fixed threaded rod 802 and the mounting sleeve 807 pass through a through hole 7 in the base plate 1. 04. With this setting, the third nut 807 can be directly rotated. The third nut 807 drives the fixed threaded rod 802 to move upward. The fixed threaded rod 802 drives the fixed rod 801 to move upward. The fixed rod 801, through its bottom frustum-shaped setting, pushes the deformation shell 803 to deform under the action of the deformation groove 806. The deformed deformation shell 803 is stuck in the hole opened on the support surface, thereby realizing the installation of the base plate 1. The base plate 1, through the through hole 7, allows the bottom frustum setting of the fixed rod 801 to pass through the base plate 1, which facilitates the installation of the fixed rod 801. The installation sleeve 804 and the limiting ring 805 can limit the top of the deformation shell 803, which facilitates the fixed rod 801's frustum setting to push the deformation shell 803 to deform.

[0029] Workflow: When using this building electromechanical installation and fixing device, firstly, drill holes in the support surface according to the through holes 7 opened in the base plate 1. Then, place the base plate 1 in a suitable position on the support surface. At this time, install the support plates 3 on the left and right sides of the bottom of the base plate 1 respectively. The insert strip 9 provided at the bottom of the base plate 1 is placed in the slot 10 opened in the support plate 3. Then, insert the fixing rod 801 through the through hole 7 opened in the base plate 1 into the hole opened in the support surface. At this time, the installation sleeve 804 will be directly fitted on the outside of the fixing threaded rod 802 until the installation sleeve 804 penetrates the through hole 7 opened in the base plate 1. At this time, the bottom of the limiting ring 805 is engaged with the base plate 1. Then, thread the third nut 807 to the fixing threaded rod 802 and turn it with a wrench. When the bottom of the third nut 807 is tightly engaged with the limiting ring 805, continue to rotate the third nut 807. The third nut 807 drives the fixing rod 801 to move upward through the fixing threaded rod 802. The fixing rod 801 pushes the deformation shell 803 upward through the bottom frustoconical setting. After the top of the deformation shell 803 is engaged with the mounting sleeve 804, continue to rotate the third nut 807 with a wrench. At this time, the bottom frustoconical setting of the fixing rod 801 pushes the deformation tube to deform under the action of the deformation groove 806. At this time, the bottom of the deformation shell 803 unfolds and gets stuck in the hole opened in the support surface, thereby limiting the base plate 1. Then, the distribution cabinet, air conditioner outdoor unit and other electromechanical equipment are placed on the reinforcing strip 604. Then, screws are passed through the fixing holes of the electromechanical equipment and the mounting holes 603 opened in the support plate 601. A nut is then threaded onto the outside of the bottom of the screw to position the electromechanical equipment. At this point, the mounting frame 605 is pushed, and the mounting frame 605 moves the mounting block 611 via the top plate 606. After the rubber block 613 on one side of the mounting block 611 contacts the electromechanical equipment, the bolt 607 is rotated. Under the action of the first nut 608, the bolt 607 pushes the limiting plate 609 upward until the top of the limiting plate 609 is tightly fitted with the support plate 601. At this point, the bolt 607 moves the first nut 608 downward, and the first nut 608 moves the top plate 606 downward via the mounting frame 605. 6. The tension block 610 moves downward, deforms, and comes into contact with the support plate 601 and the reinforcing strip 604, thereby limiting the top plate 606 and the mounting frame 605. Then, the second nut 617 is turned by the wrench. After the second nut 617 comes into contact with the mounting block 611, it drives the adjusting threaded rod 616 to continue moving. At this time, the sliding plate 615 slides in the mounting block 611. The adjusting threaded rod 616 drives the mounting plate 612 to move. The mounting plate 612 pushes the rubber strip 614 to move, so that the rubber strip 614 comes into contact with the electromechanical equipment, further limiting the electromechanical equipment. At this time, the electromechanical equipment is suspended in the air, which can facilitate air circulation, facilitate the cooling of the electromechanical equipment, and make the use of the electromechanical equipment more stable.

[0030] This document uses specific examples to illustrate the principles and implementation methods of this application. The examples are merely for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make various improvements, modifications, or variations without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A building electromechanical installation and fixing device, comprising a base plate (1), an installation body (6), and a positioning body (8), characterized in that: The bottom of the base plate (1) is fixedly connected to a number of longitudinally arranged and horizontally evenly distributed support bars (2), the top of the base plate (1) is fixedly connected to a support rod (5) evenly distributed, the outside of the support rod (5) is provided with an installation body (6), the bottom of the base plate (1) is provided with a through hole (7) evenly distributed, the through hole (7) of the base plate (1) is provided with a positioning body (8) through it, the left and right sides of the base plate (1) are provided with a grid strip (4), the bottom of the grid strip (4) is fixedly connected to a support plate (3), the top side of the support plate (3) is tightly fitted to the base plate (1).

2. The building electromechanical installation and fixing device according to claim 1, characterized in that: The bottom plate (1) has evenly distributed inserts (9) fixedly connected to the left and right sides of the bottom, and the top of the support plate (3) has evenly distributed slots (10) on the left and right sides. Inserts (9) are provided in the slots (10) on one side of the support plate (3).

3. The building electromechanical installation and fixing device according to claim 1, characterized in that: The mounting body (6) includes a support plate (601), a housing (602), and reinforcing strips (604). The bottom of the support plate (601) is fixedly connected to the housing (602) which is evenly distributed. The housing (602) is set on the inner and outer sides of the top of the support rod (5). The support plate (601) has mounting holes (603) that are evenly distributed in the horizontal direction. The front and rear sides of the top of the support plate (601) are fixedly connected to the reinforcing strips (604) which are arranged in the horizontal direction.

4. The building electromechanical installation and fixing device according to claim 3, characterized in that: The mounting body (6) also includes a mounting frame (605), a top plate (606), bolts (607), a first nut (608), a limiting plate (609), a mounting block (611), and a rubber block (613). The mounting frame (605) is located on the outside of the support plate (601). The bottom of the mounting frame (605) is fixedly connected to the first nut (608). The first nut (608) is internally threaded with a bolt (607) that passes through the bottom of the mounting frame (605). The top of the bolt (607) is rotatably connected to the limiting plate (609). The top of the limiting plate (609) is tightly fitted to the support plate (601). The top of the mounting frame (605) is mounted with the top plate (606) by screws. The top of the top plate (606) is fixedly connected to the mounting block (611). The side of the mounting block (611) is fixedly connected to the rubber block (613).

5. A building electromechanical installation and fixing device according to claim 4, characterized in that: The installation body (6) also includes a tension block (610). The bottom of the top plate (606) is fixedly connected to the tension block (610). The bottom of the tension block (610) is in contact with the support plate (601). The front and rear sides of the tension block (610) are respectively in contact with two reinforcing strips (604).

6. The building electromechanical installation and fixing device according to claim 4, characterized in that: The mounting body (6) also includes a mounting plate (612), a sliding plate (615), an adjusting threaded rod (616), and a second nut (617). Two sliding plates (615) are fixedly connected to one side of the mounting plate (612) in a longitudinal direction and distributed vertically. The sliding plates (615) pass through the mounting block (611). An adjusting threaded rod (616) is fixedly connected to one side of the mounting plate (612). Sliding plates (615) are provided on both the upper and lower sides of the adjusting threaded rod (616). The adjusting threaded rod (616) passes through the mounting block (611). The end of the adjusting threaded rod (616) away from the mounting plate (612) is threaded with a second nut (617) on the inner and outer sides. A vertically arranged and longitudinally evenly distributed rubber strip (614) is fixedly connected to one side of the mounting plate (612) that is fixedly connected to the sliding plate (615).

7. A building electromechanical installation and fixing device according to claim 1, characterized in that: The positioning body (8) includes a fixed rod (801), a fixed threaded rod (802), a deformation shell (803), a mounting sleeve (804), a limiting ring (805), and a third nut (807). The fixed rod (801) is fixedly connected to the top of the fixed threaded rod (802). The mounting sleeve (804) is provided on the outside of the fixed threaded rod (802). The limiting ring (805) is fixedly connected to the top of the mounting sleeve (804). The limiting ring (805) is provided on the outside of the fixed threaded rod (802). The bottom of the limiting ring (805) is tightly fitted with the base plate (1). The bottom of the fixed rod (801) is shaped like a frustum. The deformation shell (803) is provided on the outside of the fixed rod (801). The deformation shell (803) has uniformly distributed deformation grooves (806) on the outside of the bottom of the deformation shell (803). The fixed threaded rod (802) and the mounting sleeve (804) are inserted through a through hole (7) opened in the base plate (1).

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