Novel PLC control cabinet

Abstract

The invention discloses a novel PLC (Programmable Logic Controller) control cabinet, one side of a PLC is provided with a plurality of digital quantity input terminals, the other side of the PLC is provided with a plurality of digital quantity output terminals, the digital quantity input terminals are electrically connected with an input type electronic component through an input module, and the digital quantity output terminals are electrically connected with an output type electronic component through an output module; two ends of the connecting wire harness are respectively provided with a first connecting plug and a second connecting plug; the plurality of first connecting plugs of the multi-strand connecting wire harnesses can form an integral plug, and the integral plug can be connected with one side, provided with a plurality of digital quantity input / output wiring terminals, of the PLC in an inserted mode, so that the first connecting plugs in the integral plug can be electrically connected with the digital quantity input / output wiring terminals in sequence. The second connecting plug is used for being electrically connected with the input module or the output module; according to the invention, the first connecting plug connected with the PLC can be assembled into an integral plug which can be quickly plugged, so that the wiring process is simplified, and the integral assembly efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of control cabinet assembly, and in particular to a novel PLC control cabinet. Background Art

[0002] In the field of industrial manufacturing, automation and intelligent production are the key to achieving efficiency improvement and quality assurance; the electronic control system plays a core role in this process, and the PLC control cabinet is the basic component of this system. The quality of its design and assembly directly affects the reliability of the entire system.

[0003] At present, PLC control cabinets generally adopt the self-wiring method, which uses AVR1*0.5 specification cables to electrically connect the single digital input / output terminal of each PLC controller to the corresponding input / output module; this practice not only increases the workload of the installation workers, but also makes the work process cumbersome.

[0004] And because of the high possibility of wiring errors, it is often necessary to recheck and correct the lines in the cabinet during on-site commissioning, which in turn prolongs the commissioning cycle. In addition, due to the varying skill levels of the installers, the cable layout is often unsightly. Summary of the invention

[0005] The purpose of the present invention is to provide a novel PLC control cabinet, in which the connection structure of the PLC controller is designed to be an integral pluggable structure, so as to solve the technical problems existing in the prior art.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A novel PLC control cabinet comprises: a cabinet, wherein a plurality of fixed beams are arranged horizontally from top to bottom inside the cabinet, and a mounting assembly is arranged between adjacent fixed beams; a PLC controller, wherein one side has a plurality of digital quantity input terminals and the other side has a plurality of digital quantity output terminals, wherein the digital quantity input terminals are electrically connected to input type electronic components via an input module, and the digital quantity output terminals are electrically connected to output type electronic components via an output module; the PLC controller, the input module, the output module, the input type electronic components and the output type electronic components can be installed on the mounting assembly; a connecting harness, wherein both ends have a first connecting plug and a second connecting plug respectively; wherein the plurality of the first connecting plugs of the plurality of connecting harnesses can form an integral plug, and the integral plug can be plugged with a side of the PLC controller having a plurality of the digital quantity input terminals or a side having a plurality of the digital quantity output terminals, so that the first connecting plug in the integral plug can be electrically connected to the digital quantity input terminals or the digital quantity input terminals in sequence; and the second connecting plug is used to be electrically connected to the input module or the output module.

[0008] Furthermore, a single first connecting plug can be plugged into a single digital input terminal or a single digital output terminal; two parallel sides of the first connecting plug are respectively provided with an insert block and a slot, and a plurality of the first connecting plugs can be sequentially inserted into the slot through the insert block to form the integral plug, and the spacing between two adjacent first connecting plugs is consistent with the spacing between two adjacent digital input terminals and the spacing between two adjacent digital output terminals.

[0009] Furthermore, a plugging direction between the plug block and the slot is perpendicular to a plugging direction between the first connecting plug and the digital quantity input wiring terminal or the digital quantity output wiring terminal.

[0010] Furthermore, the integral plug is wrapped in a shell, and the shell applies a restraining force to the integral plug to prevent the plurality of first connecting plugs constituting the integral plug from loosening relative to each other, so as to achieve synchronous plugging and unplugging of the plurality of first connecting plugs as a whole.

[0011] Furthermore, the first connecting plug has an outer shape of a square cylinder with the plug-in direction of the digital input terminal or the digital output terminal as its axis; the shell is a rectangular plastic part, and the rectangular plastic part is provided with a plurality of folds parallel to the width side at equal intervals in the length direction, and the interval between two adjacent folds is consistent with the width of the first connecting plug; so that the rectangular plastic part can be folded along the folds into a shell that can surround the integral plug according to the number of the first connecting plugs constituting the integral plug; the four side walls of the first connecting plug are provided with card slots at the same position, and the rectangular plastic part is provided with a card block that can be opened in the card slot at the same position in the area between adjacent folds; and the folds overlap with the corners of the first connecting plug.

[0012] Furthermore, slide rails are provided on both sides of the cabinet in the vertical direction, and both ends of the fixed beam are slidably connected relative to the slide rails to adjust the distance between two adjacent fixed beams; and the end of the fixed beam is provided with a fixing component that can fix the fixed beam and the slide rail.

[0013] Furthermore, a slide groove that can be engaged with the slide rail is formed at the end of the fixed beam; the fixed assembly includes: a first rod body, a first cavity that is connected to the slide groove is provided inside the fixed beam in a horizontal direction along the axis of the fixed beam, the first rod body is arranged in the first cavity and can move along the axis in the first cavity; the slide rail is provided with a plurality of positioning holes at equal intervals in the vertical direction, and the end of the first rod body can move toward the positioning hole and be inserted into the positioning hole; a second rod body, a second cavity that is connected to the first cavity is provided inside the fixed beam in a horizontal direction perpendicular to the axis of the fixed beam, the second rod body is arranged in the second cavity and can move along the axis in the second cavity; a stopper is provided on the side wall of the second rod body, so that during the movement of the second rod body, the stopper can contact one end of the first rod body, driving the first rod body to move in the first cavity, so that the other end of the first rod body is inserted into the positioning hole.

[0014] Furthermore, a partition is provided on the side wall of the first rod body in a direction perpendicular to the axis, a spring is hooked on the part of the first rod body facing the slide groove, the end surface of the first cavity facing the slide groove and the partition restrict the two ends of the spring, and the elastic force of the spring makes the end of the first rod body inserted into the positioning hole be located inside the first cavity, and the other end of the first rod body contacts the side wall of the second rod body.

[0015] Furthermore, the stopper is a cylinder coaxially arranged with the second rod body, and both ends of the stopper extend toward the second rod body to form a cone; both ends of the second rod body are provided with threaded portions, and both ends of the second cavity are provided with first threaded holes that can be threadedly connected to the threaded portions, and the threaded portion of the second rod body is threadedly connected to the first threaded hole to prevent the second rod from being displaced in the second cavity, so that the stopper can always be in contact with the end of the first rod body; and the end of the second rod body is provided with a knob to rotate the second rod body.

[0016] Furthermore, the cabinet body is provided with a plurality of second threaded holes in a rectangular matrix on the side surface of the mounting assembly, and through holes are provided at both ends of the mounting assembly. Bolts pass through the through holes and are threadedly connected with the second threaded holes, so that the mounting assembly can be installed in the middle position between two adjacent fixed beams.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The novel PLC control cabinet provided by the present invention has a first connecting plug that connects the wiring harness to the PLC controller and is an integral plug that can be quickly plugged in and out, which simplifies the wiring process, reduces the installation time, and thus improves the overall assembly efficiency.

[0019] Furthermore, the integral plug is composed of a plurality of first connecting plugs, and the number of the first connecting plugs can be selected according to the on-site installation conditions and assembled into an integral plug to achieve quick plugging and unplugging, improve applicability, and be flexibly selected by the installer.

[0020] Furthermore, the fixed beam can be moved in the vertical direction so that the distance between two adjacent fixed beams is matched with the specifications of the components installed therebetween, thereby making the layout inside the entire PLC control cabinet more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 This is a structural diagram of a new PLC control cabinet;

[0023] Figure 2 This is a schematic diagram of the results for a single connected harness;

[0024] Figure 3This is a schematic diagram of the result after the four surfaces of the first connector body are unfolded;

[0025] Figure 4 This is a result diagram of a rectangular plastic part;

[0026] Figure 5 A schematic diagram showing a result of a plurality of first connecting plugs forming an integral plug;

[0027] Figure 6 Schematic diagram of the results between the slide rail and the fixed beam.

[0028] The numbers in the figure represent the following:

[0029] 1-cabinet, 2-fixed beam, 3-installation assembly, 4-PLC controller, 5-input module, 6-output module, 7-connection harness;

[0030] 71-first connecting plug, 72-second connecting plug, 73-integral plug, 74-plug block, 75-slot, 76-housing;

[0031] 761- rectangular plastic part, 762- crease, 763- slot, 764- block, 765- through hole;

[0032] 21-slide rail, 211-positioning hole, 22-slide groove, 23-first rod body, 231-first cavity, 232-partition plate, 233-spring, 24-second rod body, 241-second cavity, 242-stopper, 243-cylinder, 244-cone, 245-threaded portion, 246-first threaded hole;

[0033] 31-second threaded hole, 32-bolt. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] like Figure 1 As shown, the present invention provides an implementation of a novel PLC control cabinet, including a cabinet body 1, components and a connecting harness 7.

[0036] Among them, multiple groups of fixed beams 2 are arranged horizontally from top to bottom inside the cabinet 1, and mounting components 3 are arranged between adjacent fixed beams 2. Components are installed on the mounting components 3, and the components are connected by cables to achieve control.

[0037] The components mainly include a PLC controller 4, an input module 5, and an input module 5; they also include commonly used components such as a power module, an air switch, and a relay.

[0038] The PLC controller 4 itself has multiple digital input terminals on one side and multiple digital output terminals on the other side; the digital input terminals are electrically connected to input electronic components via the input module 5, and the digital output terminals are electrically connected to output electronic components via the output module 6.

[0039] Input electronic components are mainly used to send control electrical signals to PLC modules.

[0040] The input module 5 is used to receive electrical signals from output electronic components such as sensors, buttons, switches, etc., and convert them into digital signals that can be processed by the PLC controller 4.

[0041] The output module 6 converts the signal processed by the PLC controller 4 into a voltage or current signal that can drive output electronic components such as motors, valves, contactors, indicator lights, etc.

[0042] The output type electronic components are mainly used to execute the control commands of the PLC controller 4, thereby driving various mechanical equipment and electrical loads.

[0043] The connection harness 7 is used to electrically connect the PLC control with multiple input modules 5 and multiple output modules 6 respectively; separate cables are still used to electrically connect the input electronic components with the input modules 5 and the output modules 6 with the output electronic components.

[0044] This embodiment provides an example of connecting the wiring harness 7, such as Figure 2 As shown:

[0045] The two ends of the connecting harness 7 are respectively provided with a first connecting plug 71 and a second connecting plug 72, wherein the multiple first connecting plugs 71 of the multi-strand connecting harness 7 can form an integral plug 73, and the integral plug 73 can be plugged into the side of the PLC controller 4 having multiple digital input terminals or the side having multiple digital output terminals, so that the first connecting plug 71 in the integral plug 73 can be electrically connected to the digital input terminal or the digital input terminal in turn; thereby realizing that the integral plug 73 can be integrally plugged in and out relative to the digital input terminal and the digital output terminal.

[0046] The second connecting plug 72 is used to be electrically connected to a terminal of the input module 5 or a terminal of the output module 6 .

[0047] Furthermore, the structure of a single first connecting plug 71 can be plugged into a single digital input terminal or a single digital output terminal to achieve electrical connection.

[0048] In the prior art, the digital input terminals and digital output terminals of the PLC controller 4 are both external terminals, and the terminals and the digital input terminals and the digital output terminals are plug-in structures, and then the cables are electrically connected to the terminals individually; the plug-in structure between the first connecting plug 71 and a single digital input terminal or a single digital output terminal is the same as the plug-in structure of the terminals in the prior art, so it will not be described in detail.

[0049] In this embodiment, an insert block 74 and a slot 75 are respectively provided on both sides of the first connecting plug 71 in the horizontal direction. Multiple first connecting plugs 71 can be inserted into the slot 75 in sequence through the insert block 74 to form an integral plug 73, and the spacing between two adjacent first connecting plugs 71 in the integral plug 73 is consistent with the spacing between two adjacent digital input terminals and the spacing between two adjacent digital output terminals.

[0050] This allows the installer to determine the number of connection harnesses 7 required to assemble the integral plug 73 according to actual needs, thereby improving the applicability of the connection harness 7 .

[0051] In order to prevent the adjacent first connecting plugs 71 from being separated during the plugging and unplugging process, causing the entire integrated plug 73 to fall apart, the present embodiment also provides the following embodiments, such as Figure 2 As shown:

[0052] The plugging direction between the plug block 74 and the slot 75 is perpendicular to the plugging direction between the first connecting plug 71 and the digital input terminal or the digital output terminal; the two plugging directions are in different directions, so that during the plugging and unplugging process, the first connecting plug 71 constituting the integral plug 73 will not be detached.

[0053] Further, such as Figure 5 As shown, the integral plug 73 is wrapped in a shell 76, and the shell 76 applies a binding force to the integral plug 73 to prevent the plurality of first connecting plugs 71 constituting the integral plug 73 from loosening relative to each other, so as to achieve synchronous plugging and unplugging of the plurality of first connecting plugs 71 as a whole.

[0054] This embodiment also provides an embodiment of the housing 76, such as Figure 3 and Figure 4 As shown:

[0055] The first connecting plug 71 has an outer shape of a square column with the plugging direction with the digital input terminal or the digital output terminal as an axis.

[0056] The shell 76 is a rectangular plastic part 761, and the rectangular plastic part 761 is provided with multiple folds 762 parallel to the width side at equal intervals in the length direction, and the distance between two adjacent folds 762 is consistent with the width of the first connecting plug 71; so that the rectangular plastic part 761 can be folded along the folds 762 according to the number of first connecting plugs 71 constituting the integral plug 73 to form a shell 76 that can surround the integral plug 73.

[0057] The four side walls of the first connecting plug 71 are provided with card slots 763 at the same position, and the rectangular plastic part 761 is provided with a card block 764 that can be opened in the card slot 763 at the same position in the area between adjacent folds 762; and the folds 762 overlap with the corners of the first connecting plug 71; and the rectangular plastic part 761 is provided with a through hole 765 in the area between adjacent folds 762, so that when the rectangular plastic part 761 wraps the overall plug 73, the plug block 74 located on the side wall can pass through the through hole 765.

[0058] In a specific operation, the length of the rectangular plastic part 761 can be very long and can be rolled into a roll of plastic parts; after the whole plug 73 is wrapped, the excess plastic parts can be cut off along the fold 762, so there is no waste.

[0059] In this embodiment, in order to make the layout of the electric control cabinet more reasonable and facilitate later maintenance, components with the same function need to be arranged together to facilitate the maintenance of the junction box. Therefore, the spacing between the fixed beams 2 will be different and needs to be set according to actual conditions.

[0060] Therefore, in this embodiment, an embodiment of fixing the beam 2 is provided, such as Figure 6 As shown:

[0061] Slide rails 21 are provided on both sides of the cabinet 1 in the vertical direction, and the ends of the fixed beams 2 are provided with slide grooves 22 that can engage with the slide rails 21. The two ends of the fixed beams 2 are slidably connected relative to the slide rails 21 to adjust the distance between two adjacent fixed beams 2; and the ends of the fixed beams 2 are provided with fixing components that can fix the fixed beams 2 and the slide rails 21.

[0062] Furthermore, this embodiment also provides an embodiment of a fixing component, such as Figure 6 As shown:

[0063] The fixing assembly disposed inside the fixing beam 2 includes a first rod body 23 and a second rod body 24 .

[0064] A first cavity 231 that is connected to the slide groove 22 is provided inside the fixed beam 2 in the horizontal direction along the axis of the fixed beam 2. The first rod body 23 is arranged in the first cavity 231 and can move along the axis in the first cavity 231. The slide rail 21 is provided with a plurality of positioning holes 211 at equal intervals in the vertical direction. The end of the first rod body 23 can move toward the positioning hole 211 and be inserted into the positioning hole 211.

[0065] A second cavity 241 that is in communication with the first cavity 231 is provided inside the fixed beam 2 in the horizontal direction and perpendicular to the axis of the fixed beam 2. The second rod 24 is arranged in the second cavity 241 and can move along the axis in the second cavity 241. A stopper 242 is provided on the side wall of the second rod 24, so that when the second rod 24 moves, the stopper 242 can contact one end of the first rod 23, driving the first rod 23 to move in the first cavity 231, so as to insert the other end of the first rod 23 into the positioning hole 211.

[0066] A partition 232 is provided on the side wall of the first rod body 23 in the direction perpendicular to the axis. A spring 233 is hooked on the part of the first rod body 23 facing the slide groove 22. The end surface of the first cavity 231 facing the slide groove 22 and the partition 232 restrict the two ends of the spring 233. The elastic force of the spring 233 makes the end of the first rod body 23 inserted into the positioning hole 211 be located inside the first cavity 231, and the other end of the first rod body 23 contacts the side wall of the second rod body 24.

[0067] Furthermore, this embodiment also provides an embodiment of the stopper 242, such as Figure 6 As shown:

[0068] The stopper 242 is a cylindrical body 243 coaxially arranged with the second rod body 24 , and both ends of the stopper 242 extend toward the second rod body 24 to form a cone 244 .

[0069] Threaded portions 245 are provided at both ends of the second rod body 24, and first threaded holes 246 that can be threadedly connected to the threaded portions 245 are provided at both ends of the second cavity 241. By threading the threaded portion 245 of the second rod body 24 with the first threaded hole 246, the second rod is prevented from being displaced in the second cavity 241, so that the stopper 242 can always be in contact with the end of the first rod body 23.

[0070] A knob is disposed at the end of the second rod 24 for rotating the second rod 24 .

[0071] Furthermore, a plurality of second threaded holes 31 are respectively provided in a rectangular matrix on the side of the mounting component 3 on the cabinet body 1, and through holes 765 are provided at both ends of the mounting component. Bolts 32 pass through the through holes 765 and are threadedly connected with the second threaded holes 31, so that the mounting component 3 can be installed in the middle position between two adjacent fixed beams 2, and the components on the mounted component 3 are located in the middle position between the two fixed beams 2, which is convenient for wiring the components.

[0072] Among them, the installation component 3 is a DIN rail used in the prior art, which is a standardized metal rail. The components are set on the rail by buckles, which is convenient for installation and removal; it can slide along the rail to facilitate the adjustment of the position of the components.

[0073] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A new type of PLC control cabinet, characterized in that: include: A cabinet (1), wherein a plurality of groups of fixed beams (2) are arranged in a horizontal direction from top to bottom inside the cabinet (1), and mounting components (3) are arranged between adjacent fixed beams (2); A PLC controller (4) having a plurality of digital quantity input terminals on one side and a plurality of digital quantity output terminals on the other side, wherein the digital quantity input terminals are electrically connected to input-type electronic components via an input module (5), and the digital quantity output terminals are electrically connected to output-type electronic components via an output module (6); the PLC controller (4), the input module (5) and the output module (6) can be mounted on a mounting assembly (3); A connecting harness (7) having a first connecting plug (71) and a second connecting plug (72) at both ends; wherein the plurality of the first connecting plugs (71) of the plurality of connecting harnesses (7) can form an integral plug (73), and the integral plug (73) can be plugged into a side of the PLC controller (4) having a plurality of digital quantity input terminals or a side having a plurality of digital quantity output terminals, so that the first connecting plug (71) in the integral plug (73) can be electrically connected to the digital quantity input terminals or the digital quantity output terminals in sequence; and the second connecting plug (72) is used to electrically connect to a terminal of the input module (5) or a terminal of the output module (6).

2. The new PLC control cabinet according to claim 1 is characterized in that: A single first connection plug (71) can be plugged into a single digital quantity input terminal or a single digital quantity output terminal; an insert block (74) and a slot (75) are respectively provided on both sides of the first connection plug (71) in a horizontal direction; a plurality of first connection plugs (71) can be sequentially inserted into the slot (75) through the insert block (74) to form the integral plug (73); and the spacing between two adjacent first connection plugs (71) is consistent with the spacing between two adjacent digital quantity input terminals and the spacing between two adjacent digital quantity output terminals.

3. The new PLC control cabinet according to claim 2 is characterized in that: The plugging direction between the plug block (74) and the slot (75) is perpendicular to the plugging direction between the first connecting plug (71) and the digital quantity input wiring terminal or the digital quantity output wiring terminal.

4. The new PLC control cabinet according to claim 3 is characterized in that: The integral plug (73) is enclosed in a shell (76), and the shell (76) applies a restraining force to the integral plug (73) to prevent the plurality of first connecting plugs (71) constituting the integral plug (73) from loosening relative to each other, so as to achieve synchronous plugging and unplugging of the plurality of first connecting plugs (71) as a whole.

5. The new PLC control cabinet according to claim 4 is characterized in that: The first connection plug (71) has an outer shape of a square column with the plugging direction of the digital quantity input terminal or the digital quantity output terminal as the axis; the shell (76) is a rectangular plastic part (761), and the rectangular plastic part (761) is provided with a plurality of folds (762) parallel to the width side at equal intervals in the length direction, and the interval between two adjacent folds (762) is consistent with the width of the first connection plug (71); so that the rectangular plastic part (761) can be folded along the folds (762) according to the number of the first connection plugs (71) constituting the integral plug (73) to form a shell (76) that can surround the integral plug (73); The four side walls of the first connecting plug (71) are provided with card slots (763) at the same position, and the rectangular plastic part (761) is provided with card blocks (764) that can be opened in the card slots (763) at the same position in the area between adjacent folds (762); and the folds (762) are overlapped with the corners of the first connecting plug (71).

6. The novel PLC control cabinet according to claim 1 or 5, characterized in that: Said Slide rails (21) are provided on both sides of the cabinet (1) in the vertical direction, and the two ends of the fixed beam (2) are slidably connected relative to the slide rails (21) to adjust the distance between two adjacent fixed beams (2); Furthermore, a fixing component capable of fixing the fixing beam (2) and the slide rail (21) is provided at the end of the fixing beam (2).

7. The new PLC control cabinet according to claim 6 is characterized in that: The end of the fixed beam (2) is provided with a slide groove (22) capable of engaging with the slide rail (21); the fixed component comprises: A first rod (23), wherein a first cavity (231) intersecting the slide groove (22) is provided inside the fixed beam (2) in a horizontal direction along the axis of the fixed beam (2), and the first rod (23) is arranged in the first cavity (231) and is movable along the axis in the first cavity (231); the slide rail (21) is provided with a plurality of positioning holes (211) at equal intervals in a vertical direction, and an end of the first rod (23) is movable toward the positioning hole (211) and is inserted into the positioning hole (211); A second rod (24); a second cavity (241) which is in communication with the first cavity (231) is provided inside the fixed beam (2) in a horizontal direction perpendicular to the axis of the fixed beam (2); the second rod (24) is arranged in the second cavity (241) and is movable along the axis in the second cavity (241); a stopper (242) is provided on the side wall of the second rod (24), so that during the movement of the second rod (24), the stopper (242) can contact one end of the first rod (23), thereby driving the first rod (23) to move in the first cavity (231), so that the other end of the first rod (23) is inserted into the positioning hole (211).

8. The new PLC control cabinet according to claim 7 is characterized in that: A partition (232) is provided on the side wall of the first rod body (23) in a direction perpendicular to the axis, a spring (233) is looped on the portion of the first rod body (23) facing the slide groove (22), the end surface of the first cavity (231) facing the slide groove (22) and the partition (232) restrict the two ends of the spring (233), the elastic force of the spring (233) makes the end of the first rod body (23) inserted into the positioning hole (211) be located inside the first cavity (231), and the other end of the first rod body (23) contacts the side wall of the second rod body (24).

9. The new PLC control cabinet according to claim 8 is characterized in that: The stopper (242) is a cylinder (243) coaxially arranged with the second rod (24), and both ends of the stopper (242) extend toward the second rod (24) to form a cone (244); The second rod (24) is provided with threaded portions (245) at both ends, and the second cavity (241) is provided with first threaded holes (246) capable of being threadedly connected to the threaded portions (245). By threading the threaded portions (245) of the second rod (24) and the first threaded holes (246), displacement of the second rod in the second cavity (241) is avoided, so that the stopper (242) can always be in contact with the end of the first rod (23); A knob is provided at the end of the second rod (24) for rotating the second rod (24).

10. The novel PLC control cabinet according to claim 1 or 9, characterized in that: A plurality of second threaded holes (31) are respectively provided in a rectangular matrix on the side surface of the cabinet (1) on which the mounting assembly (3) is arranged, and through holes (765) are provided at both ends of the mounting assembly. Bolts pass through the through holes (765) and are threadedly connected to the second threaded holes (31), so that the mounting assembly (3) can be installed in the middle position between two adjacent fixed beams (2).

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