An ultrasonic device

Abstract

The application discloses an ultrasonic device, which comprises a main frame and a lifting assembly; the main frame is provided with a positioning member, and the lifting assembly is positioned and installed on the main frame through the positioning member; the main frame comprises a fixed frame and a fixed beam, a limiting space for placing the lifting assembly is formed between the fixed frame and the fixed beam, the fixed position of the fixed beam on the fixed frame is adjustable to adjust the size of the limiting space, the fixed frame is provided with a first assembly hole, and the fixed beam is fixed on the fixed frame through a first fixing member which passes through the first assembly hole and is adjustable in position on the first assembly hole. In the installation process of the lifting assembly, the fixed beam is first fixed on the outer side of the lifting assembly, and then the fixed beam and the frame beam are fixed together through the first fixing member; in the installation process, the first fixing member is allowed to move in the first assembly hole, and the installation mode can not only eliminate the assembly error between the lifting assembly and the main frame, realize reliable installation of the lifting assembly on the main frame, but also is labor-saving and easy to assemble.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to an ultrasound device. Background Technology

[0002] Ultrasonic equipment, especially trolley-type ultrasonic equipment, mainly includes a base, a main unit mounted on the base, a display and keyboard assembly mounted on the main unit, and a lifting assembly connected to the main unit to drive the display and keyboard assembly to move vertically. The fixed end of the lifting assembly is fixed to the main frame of the main unit, and the telescopic end of the lifting assembly is connected to and supported below the display and keyboard assembly. The installation stability of the lifting assembly has a crucial impact on the stability of the entire ultrasonic equipment.

[0003] To ensure the stability of the lifting assembly and the entire ultrasonic equipment, some related technologies employ complex fixing methods for the lifting assembly. For example, an L-shaped adapter sheet metal part is installed around the lifting assembly. The vertical part of the adapter sheet metal part is fixed to the outer wall of the lifting assembly, while the horizontal part is fixed to the crossbeam of the main frame. The crossbeam is welded and fixed to the main frame and cannot be moved. During assembly, because the adapter sheet metal part is a bent workpiece, high dimensional accuracy is required. The adapter sheet metal part is squeezed tightly against the lifting assembly during installation to prevent loosening and to compensate for assembly gaps caused by unavoidable processing errors. This installation process is relatively labor-intensive. Utility Model Content

[0004] Therefore, the technical problem to be solved by this application is to overcome the drawback of the laborious installation process of the lifting components in existing ultrasonic equipment, thereby providing an ultrasonic equipment.

[0005] To solve the above-mentioned technical problems, the technical solution of this application is as follows:

[0006] An ultrasonic device includes a main frame and a lifting assembly; the main frame is provided with a positioning element, and the lifting assembly is positioned and installed on the main frame via the positioning element; the main frame includes a fixed frame and a fixed beam, and a limiting space for placing the lifting assembly is formed between the fixed frame and the fixed beam; the fixed position of the fixed beam on the fixed frame is adjustable to adjust the size of the limiting space; the fixed frame is provided with a first mounting hole, and the fixed beam is fixed to the fixed frame by a first fixing element that passes through the first mounting hole and is positionally adjustable on the first mounting hole.

[0007] Furthermore, the first mounting hole is an oblong hole; or the radial dimension of the first mounting hole is greater than the diameter of the first fastener.

[0008] Furthermore, the fixed frame has one or more layers, each layer of the fixed frame includes two frame beams, the two frame beams are respectively located on opposite sides of the lifting assembly in one direction; two fixed beams are fixedly connected between the two frame beams in the same layer, the two fixed beams are respectively located on opposite sides of the lifting assembly in another direction; both frame beams are provided with the first mounting hole, one end of the fixed beam is fixed to one of the frame beams by a first fastener, and the other end of the fixed beam is fixed to the other frame beam by another first fastener.

[0009] Furthermore, the main frame also includes a pair of vertically arranged side supports, and the fixed frame is arranged in multiple layers along the height direction of the side supports; the fixed beam has multiple layers, and the multiple layers of fixed beams are respectively fixed at different height positions on the outer side wall of the lifting assembly; the fixed beam is fixed to the fixed frame of the corresponding layer by a first fastener.

[0010] Furthermore, both ends of the frame beam are respectively fixed to a pair of side supports by a second fastener, and the two frame beams and the side supports are fixed in different directions.

[0011] Furthermore, the fixed frame has two layers, namely an upper frame and a middle frame; on the upper frame, the connection direction of the frame beam and the fixed beam is arranged in the vertical direction; on the middle frame, the connection direction of the frame beam and the fixed beam is arranged in the horizontal direction.

[0012] Furthermore, the outer wall of the lifting assembly is provided with a connection hole, and the fixed beam is detachably fixed to the lifting assembly through a third fastener connected to the connection hole.

[0013] Furthermore, the connection directions of the fixed beam and the lifting assembly, the connection directions of the frame beam and the fixed beam on the upper frame, and the connection directions of the frame beam and the fixed beam on the middle frame are all perpendicular to each other.

[0014] Furthermore, the main frame also includes a lower frame connected between a pair of side supports and located below the fixed frame. The lower frame includes a pair of lower frame longitudinal beams disposed opposite each other and a pair of lower frame cross beams connected between the pair of lower frame longitudinal beams. The pair of lower frame cross beams are supported at the bottom of the lifting assembly, and the positioning elements are a plurality of positioning pins disposed on the lower frame cross beams.

[0015] Furthermore, the connection directions of the lower frame and the side support, the line connecting one of the lower frame longitudinal beams and the lower frame transverse beam, and the line connecting the other lower frame longitudinal beam and the lower frame transverse beam are all perpendicular to each other.

[0016] The technical solution of this application has the following advantages: By setting a first assembly hole on the fixed frame, the fixed beam is fixed to the fixed frame through a first fixing member that passes through the first assembly hole and is positionally adjustable on the first assembly hole. As the fixed position of the fixed beam on the fixed frame is adjusted, the size of the limiting space formed between the fixed frame and the fixed beam can also be adjusted. During the installation of the lifting assembly, the fixed beam is first placed on the fixed frame, at which time the first fixing member is in the first assembly hole and movable. Then, the fixed beam is moved to form a relatively large limiting space between the fixed beam and the fixed frame. The lifting assembly is then placed into the limiting space, and the lifting assembly is initially positioned by the positioning member. Next, the position of the first fixing member is adjusted so that the fixed beam connected to the first fixing member is close to the outer wall of the lifting assembly. Finally, the fixed beam is fixed to the lifting assembly. The fixed beam and the lifting assembly can be reliably fixed to the fixed frame of the main frame through the first fixing member. This installation method can not only eliminate the assembly error between the lifting assembly and the main frame and realize the reliable installation of the lifting assembly on the main frame, but also the installation process is effortless and easy to perform. Compared with the existing technology that uses screws in four directions to fix the lifting component and the main frame together, this method avoids the problem of unreliable installation caused by misalignment of screws and screw holes in individual installation directions due to assembly errors. Compared with the existing technology that assembles the lifting component and the main frame through L-shaped adapter sheet metal parts, this method reduces the installation effort caused by the need to squeeze the lifting component to eliminate assembly gaps during installation, and also saves the material cost of additional L-shaped adapter sheet metal parts. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the ultrasonic device in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure of the main frame, base, and lifting assembly in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram showing the connection relationship between the main frame, the base, and the lifting assembly in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram showing the connection relationship between the main frame and the lifting assembly in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the overall structure of the mainframe in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the overall structure of the lifting component in the embodiments of this application.

[0024] Explanation of reference numerals in the attached drawings: A, Ultrasonic main unit; B, Display device; C, Operating device; 1, Main unit frame; 2, Lifting assembly; 201, Connecting hole; 3, Base; 11, Side support; 12, Fixed frame; 12a, Upper frame; 12b, Middle frame; 13, Lower frame; 131, Lower frame longitudinal beam; 132, Lower frame transverse beam; 133, Positioning pin; 14, Fixed beam; 121, Frame beam; 1211, First assembly hole; 15, First fixing component; 16, Second fixing component; 17, Third fixing component; 18, Fourth fixing component; 19, Fifth fixing component; 20, Sixth fixing component; 5, Corner fixing block. Detailed Implementation

[0025] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] like Figure 1The image shows an ultrasound device that uses ultrasound signals to detect patients and form images to assist doctors in medical diagnosis and treatment. The ultrasound device mainly includes an ultrasound main unit A, a display device B, and an operating device C.

[0029] The ultrasound main unit A, as a crucial component of the ultrasound equipment, primarily functions as the core controller, processing ultrasound data and generating ultrasound images. The display device B, including a monitor, is mainly used to display ultrasound images and other relevant information. The operating device C mainly includes an operation panel with buttons, knobs, or a touchscreen, allowing users to input commands to control the ultrasound equipment. The ultrasound main unit A is located at the bottom of the entire device, while the display device B and operating device C are supported above it. The bottom of the ultrasound main unit A is equipped with four casters with brake pads for movement and positioning of the ultrasound equipment.

[0030] like Figure 1 and Figure 2 As shown, the ultrasound host A mainly includes a base 3, a main frame 1, a lifting assembly 2, a main control box (not shown), and an outer shell (not shown). The base 3 is connected above four casters, and the main frame 1 is fixed to the base 3. The lifting assembly 2 is installed on the main frame 1, and its telescopic end is connected to the operating device C, used for vertically adjusting the height of the operating device C and the display device B. The main control box is installed on one side or inside the main frame 1, and the outer shell is connected to the base 3 and covers the main frame 1, the main control box, and the lifting assembly 2.

[0031] like Figure 2 As shown, the main frame 1 includes a pair of vertically arranged side supports 11, a fixed frame 12, and a lower frame 13. The bottom of the pair of side supports 11 is fixedly connected to the base 3. The lower frame 13 and the fixed frame 12 are both fixedly connected between the pair of side supports 11, and the fixed frame 12 is located above the lower frame 13. The bottom of the lifting component 2 is positioned and supported on the lower frame 13, and the fixed frame 12 is located on the outside of the middle part of the lifting component 2.

[0032] like Figure 2 and Figure 3As shown, in some embodiments, the fixed frame 12 on the main frame 11 has two layers: an upper frame 12a and a middle frame 12b, which are arranged along the height direction of the lifting assembly 2. The main frame 1 also includes a fixed beam 14 fixedly connected to the outer wall of the lifting assembly 2. The fixed beam 14 also has two layers, which are fixed at different height positions on the outer wall of the lifting assembly 2, and each layer of fixed beam 14 is fixedly connected to the upper frame 12a or the middle frame 12b. In other alternative embodiments, the fixed frame 12 on the main frame 11 may have three or more layers.

[0033] like Figure 3 and Figure 4 As shown, both the upper frame 12a and the middle frame 12b include two opposing frame beams 121, which are located on opposite sides of the lifting assembly 2 in one direction. Each layer has two fixed beams 14, located on opposite sides of the lifting assembly 2 in another direction. The two frame beams 121 and two fixed beams 14 of the same layer are located on four different sides of the lifting assembly 2. A limiting space for placing the lifting assembly 2 is formed between the two frame beams 121 and the two fixed beams 14. The fixed positions of the two fixed beams 14 on the two frame beams 121 are adjustable to adjust the size of the limiting space. Each frame beam 121 has a first mounting hole 1211. The fixed beam 14 is fixed to the fixed frame 12 by a first fastener 15 passing through the first mounting hole 1211 and whose position is adjustable within the first mounting hole 1211. The first fastener 15 is specifically a screw.

[0034] In some embodiments, the first mounting hole 1211 can be an oblong hole; or the first mounting hole 1211 can be a round hole or other irregular hole with a radial dimension larger than that of the first fastener 15; when the first mounting hole 1211 is a round hole, the radial dimension of the first mounting hole 1211 is the diameter of the round hole; when the first mounting hole 1211 is other irregular hole, the radial dimension of the first mounting hole 1211 is the distance between the two farthest points of the irregular hole.

[0035] like Figure 3 and Figure 4 As shown, the two ends of the two frame beams 121 on the same layer are respectively fixed to a pair of side brackets 11 by second fasteners 16. The fixing directions of the two frame beams 121 and the side brackets 11 on the same layer are different. Specifically, the second fastener 16 is a screw; the fixing directions of the two second fasteners 16 on the two frame beams 121 on the same layer are both set in the horizontal direction, and the fixing directions of the two second fasteners 16 are perpendicular to each other. This arrangement, compared with the existing method of fixing the two frame beams 121 on the main frame 1 in the same direction, is beneficial to improving the overall stability of the main frame 1.

[0036] like Figure 3 and Figure 4 As shown, one end of the fixed beam 14 is fixed to one of the frame beams 121 by a first fastener 15, and the other end of the fixed beam 14 is fixed to another frame beam 121 by another first fastener 15. On the upper frame 12a, the connection direction between the frame beam 121 and the fixed beam 14 is set vertically; on the middle frame 12b, the connection direction between the frame beam 121 and the fixed beam 14 is set horizontally. This arrangement facilitates the installation of the two layers of fixed beams 14 on the upper frame 12a and the middle frame 12b, and the multi-directional installation and fixing also makes the overall installation structure of the main frame 1 more stable.

[0037] like Figure 3 and Figure 6 As shown, the outer wall of the lifting assembly 22 is provided with a connection hole 201. The fixed beam 14 is detachably fixed to the lifting assembly 22 through a third fastener 17 connected to the connection hole 201. The third fastener 17 is specifically a screw, and one or more sets of third fasteners 17 can be provided. The fixing direction of the third fastener 17 is horizontal. The connection directions of the fixed beam 14 and the lifting assembly 22, the connection directions of the frame beam 121 on the upper frame 12a and the fixed beam 14, and the connection directions of the frame beam 121 on the middle frame 12b and the fixed beam 14 are all perpendicular to each other. This multi-directional fixed connection assembly method can improve the overall stability of the lifting assembly after it is installed on the main frame 1.

[0038] like Figure 4 and Figure 5 As shown, the lower frame 13 includes a pair of lower frame longitudinal beams 131 and a pair of lower frame transverse beams 132 arranged opposite to each other. The pair of lower frame longitudinal beams 131 are fixedly connected between a pair of side supports 11, and the pair of lower frame transverse beams 132 are fixedly connected between the pair of lower frame longitudinal beams 131. The bottom of the lifting assembly 2 is positioned above the pair of lower frame transverse beams 132 by positioning elements 133. The pair of lower frame longitudinal beams 131 and the pair of lower frame transverse beams 132 are located on four different sides of the lifting assembly 2. The connection directions of the lower frame 13 and the side supports 11, the line connecting one lower frame longitudinal beam 131 and the lower frame transverse beam 132, and the line connecting the other lower frame longitudinal beam 131 and the lower frame transverse beam 132 are all perpendicular to each other. This configuration allows the lower frame 13 to be fixed in three directions. Compared with the existing technology where the lower frame 13 is only fixed in the horizontal direction, the installation stability of the lower frame 13 is higher, which in turn helps to improve the installation stability of the lifting component 2 above the lower frame 13.

[0039] Specifically, the two ends of a pair of lower frame longitudinal beams 131 are respectively fixedly connected to a pair of side supports 11 by fourth fasteners 18; the fourth fastener 18 is specifically a screw, and the fixing direction of the fourth fastener 18 is set along the length extension direction of the lower frame longitudinal beams 131. The pair of lower frame longitudinal beams 131 have a height difference in the vertical direction, and the height of a pair of lower frame transverse beams 132 in the vertical direction is exactly equal to the height difference between the pair of lower frame longitudinal beams 131. One end of a pair of lower frame transverse beams 132 is fixedly connected to one of the lower frame longitudinal beams 131 by a fifth fastener 19; the fifth fastener 19 is specifically a screw, and the fixing direction of the fifth fastener 19 is set along the length extension direction of the lower frame transverse beam 132; the other end of a pair of lower frame transverse beams 132 is fixed to the other lower frame longitudinal beam 131 by a sixth fastener 20; the sixth fastener 20 is specifically a screw, and the fixing direction of the sixth fastener 20 is set in the vertical direction.

[0040] like Figure 5 As shown, in some embodiments, the positioning element 133 specifically comprises multiple positioning pins disposed on a pair of lower frame crossbeams 132. The bottom of the lifting assembly 2 is provided with multiple positioning holes corresponding to the positions of the multiple positioning pins. The lifting assembly 2 is initially positioned and installed on the main frame 1 through the cooperation of the multiple positioning holes and multiple positioning pins, preventing positional displacement during the subsequent installation and fixing process of the lifting assembly 2. In alternative embodiments, the positions of the positioning pins and positioning holes can be interchanged, that is, positioning pins are provided at the bottom of the lifting assembly 2, and positioning holes are provided on the pair of lower frame crossbeams; or the positioning pins and positioning holes are respectively replaced by positioning blocks and positioning grooves.

[0041] like Figure 3 and Figure 5 As shown, a corner fixing block 5 is also fixedly connected at the angle between the top of the side bracket 11 and the upper frame 12a. The setting of the corner fixing block 5 can further increase the stability of the overall structure of the main frame 1.

[0042] In summary, the ultrasonic device provided in this application embodiment, during the installation of the lifting assembly 2, firstly, a pair of fixed beams 14 are placed between a pair of frame beams 121 of the fixed frame 12. At this time, the first fixing member 15 is in the first assembly hole 1211 and is movable. Then, the pair of fixed beams 14 are moved to form a relatively large limiting space between the pair of fixed beams 121 and the pair of frame beams 121. Then, the lifting assembly 2 is placed into the limiting space, and the bottom of the lifting assembly 2 is initially positioned by the positioning member 133. Next, the position of the first fixing member 15 is adjusted so that the fixed beam 121 connected to the first fixing member 15 is close to the outer wall of the lifting assembly 2. Finally, the fixing beam 121 is fixed to the lifting assembly 2 by the third fixing member 17. The fixed beams 14 and the lifting assembly 2 can be reliably fixed to the frame beams 121 of the main frame 1 by the first fixing member 15. This installation method can not only eliminate the unavoidable assembly error between the lifting assembly 2 and the main frame 1 and realize the reliable installation of the lifting assembly 2 on the main frame 1, but also the installation process is effortless and easy to perform. Compared with the existing technology that uses screws in four directions to fix the lifting component 2 and the main frame 1 together, this method avoids the problem of unreliable installation caused by misalignment of screws and screw holes in individual installation directions due to assembly errors. Compared with the existing technology that assembles the lifting component 2 and the main frame through L-shaped adapter sheet metal parts, this method reduces the installation effort caused by the need to squeeze the lifting component 2 to eliminate assembly gaps during installation using L-shaped adapter sheet metal parts, and also saves the material cost of additional processing of L-shaped adapter sheet metal parts.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. An ultrasonic device, characterized in that, The system includes a main frame (1) and a lifting assembly (2); the main frame (1) is provided with a positioning element (133), and the lifting assembly (2) is positioned and installed on the main frame (1) by the positioning element (133); the main frame (1) includes a fixed frame (12) and a fixed beam (14), and a limiting space for placing the lifting assembly (2) is formed between the fixed frame (12) and the fixed beam (14), and the fixed position of the fixed beam (14) on the fixed frame (12) is adjustable to adjust the size of the limiting space; the fixed frame (12) is provided with a first mounting hole (1211), and the fixed beam (14) is fixed on the fixed frame (12) by a first fixing element (15) that passes through the first mounting hole (1211) and is adjustable in position on the first mounting hole (1211).

2. The ultrasonic device according to claim 1, characterized in that, The first mounting hole (1211) is an oblong hole; or the radial dimension of the first mounting hole (1211) is greater than the diameter of the first fastener (15).

3. The ultrasonic device according to claim 1, characterized in that, The fixed frame (12) has one or more layers. Each layer of the fixed frame (12) includes two frame beams (121). The two frame beams (121) are located on opposite sides of the lifting assembly (2) in one direction. Two fixed beams (14) are fixedly connected between the two frame beams (121) in the same layer. The two fixed beams (14) are located on opposite sides of the lifting assembly (2) in another direction. The two frame beams (121) are provided with the first mounting hole (1211). One end of the fixed beam (14) is fixed to one of the frame beams (121) by a first fastener (15). The other end of the fixed beam (14) is fixed to the other frame beam (121) by another first fastener (15).

4. The ultrasonic device according to claim 3, characterized in that, The main frame (1) also includes a pair of vertically arranged side supports (11), and the fixed frame (12) is arranged in multiple layers along the height direction of the side supports (11); the fixed beam (14) has multiple layers, and the multiple layers of the fixed beam (14) are respectively fixed at different height positions on the outer side wall of the lifting assembly (2); the fixed beam (14) is fixed to the fixed frame (12) of the corresponding layer by the first fixing member (15).

5. The ultrasonic device according to claim 4, characterized in that, The two ends of the frame beam (121) are respectively fixed to a pair of side brackets (11) by the second fastener (16), and the two frame beams (121) and the side brackets (11) are fixed in different directions.

6. The ultrasonic device according to claim 3, characterized in that, The fixed frame (12) has two layers, namely an upper frame (12a) and a middle frame (12b); on the upper frame (12a), the connection direction of the frame beam (121) and the fixed beam (14) is arranged in the vertical direction; on the middle frame (12b), the connection direction of the frame beam (121) and the fixed beam (14) is arranged in the horizontal direction.

7. The ultrasonic device according to claim 6, characterized in that, The outer wall of the lifting assembly (2) is provided with a connection hole (201), and the fixed beam (14) is detachably fixed to the lifting assembly (2) by a third fastener (17) connected to the connection hole (201).

8. The ultrasonic device according to claim 7, characterized in that, The connection directions of the fixed beam (14) and the lifting assembly (2), the connection directions of the frame beam (121) and the fixed beam (14) on the upper frame (12a), and the connection directions of the frame beam (121) and the fixed beam (14) on the middle frame (12b) are all perpendicular to each other.

9. The ultrasonic device according to any one of claims 1-8, characterized in that, The main frame (1) further includes a lower frame (13) connected between a pair of side supports (11) and located below the fixed frame (12). The lower frame (13) includes a pair of lower frame longitudinal beams (131) arranged opposite each other and a pair of lower frame cross beams (132) connected between the pair of lower frame longitudinal beams (131). The pair of lower frame cross beams (132) are supported at the bottom of the lifting assembly (2). The positioning element (133) is a plurality of positioning pins provided on the lower frame cross beams (132).

10. The ultrasonic device according to claim 9, characterized in that, The connection directions of the lower frame (13) and the side support (11), the connection direction of one of the lower frame longitudinal beams (131) and the lower frame transverse beam (132), and the connection direction of the other lower frame longitudinal beam (131) and the lower frame transverse beam (132) are perpendicular to each other.

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