CN111372414A - Universal power interface layer module for railway signal system - Google Patents
Universal power interface layer module for railway signal system Download PDFInfo
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- CN111372414A CN111372414A CN202010117114.XA CN202010117114A CN111372414A CN 111372414 A CN111372414 A CN 111372414A CN 202010117114 A CN202010117114 A CN 202010117114A CN 111372414 A CN111372414 A CN 111372414A
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- interface layer
- power interface
- signal system
- layer module
- railway signal
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/18—Construction of rack or frame
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
Abstract
The invention discloses a universal power interface layer module of a railway signal system, which comprises a U-shaped groove-shaped structural part, a U-shaped plate and a front cover plate; the opening side of the U-shaped plate is fixedly connected with the front cover plate; one side of the front cover plate is hinged with one side of the opening of the structural part; a first DIN guide rail is arranged on the inner surface of the structural part, a first terminal piece is arranged on the surface of the first DIN guide rail, and the first terminal piece is detachably connected with the first DIN guide rail; the outer surface of the U-shaped plate is provided with a second DIN guide rail, the surface of the second DIN guide rail is provided with a second terminal piece, and the second terminal piece is detachably connected with the second DIN guide rail. According to the invention, when the cable is configured, an operator only needs to connect the cable between the first terminal piece and the second terminal piece, the cable is more reasonably arranged, the arrangement space of the cable is integrated in a structural member, the occupied installation space is small, and the cost is reduced.
Description
Technical Field
The invention belongs to the technical field of railway communication equipment, and particularly relates to a universal power interface layer module for a railway signal system.
Background
In the field of railway communication signal products, the integration and modularization of PCBs are very perfect, but for the level of a whole cabinet system, the power supply design scheme of the system has two types: one is simply to connect power lines to each PCB module; the other type is that the terminal strip is simply installed on a sheet metal installation plate, and an external cable is shunted to each PCB module. The first type is inconvenient for field installation and maintenance, and the lengths of external cables to be provided cannot be uniform due to different module positions; the second kind has solved the problem of external power cord length unification, but power source interface module integrated level is not high, if the complete machine PCB module is many, can not effective configuration, and the quantity that needs the configuration is many, and it is big to occupy the space of installation, has increased the cost.
Disclosure of Invention
Aiming at the problems, the invention provides a universal power interface layer module for a railway signal system, which comprises a U-shaped groove-shaped structural part, a U-shaped plate and a front cover plate;
the opening side of the U-shaped plate is fixedly connected with the front cover plate;
one side of the front cover plate is hinged with one side of the opening of the structural part;
a first DIN guide rail is arranged on the inner surface of the structural part, a first terminal piece is arranged on the surface of the first DIN guide rail, and the first terminal piece is detachably connected with the first DIN guide rail;
a second DIN guide rail is arranged on the outer surface of the U-shaped plate, a second terminal piece is arranged on the surface of the second DIN guide rail, and the second terminal piece is detachably connected with the second DIN guide rail;
the first terminal piece and the second terminal piece are used for configuration of a cable.
Furthermore, a first wire passing hole and a second wire passing hole are formed in the surface of the structural part;
the first wire passing holes are positioned at two sides of the first DIN guide rail;
the second wire passing hole is close to one end of the first DIN rail.
Furthermore, a third wire passing hole is formed in the surface of the U-shaped plate;
the third wire passing holes are located on two sides of the second DIN rail.
Furthermore, the inner edge positions of the first wire passing hole and the third wire passing hole are both provided with wire protecting sleeves.
Further, the outer surface of the structural part is provided with a filter module.
Furthermore, a hinge fixing plate is welded on one side of the opening of the structural member, and a lock closing mechanism is welded on the other side of the opening of the structural member.
Further, the inner surface of the U-shaped plate is provided with a third DIN guide rail, the surface of the third DIN guide rail is provided with an air opening module and a lightning protection module, and the air opening module and the lightning protection module are detachably connected with the third DIN guide rail.
Furthermore, the surface of front shroud is equipped with the observation window, the observation window is used for observing the inside condition of U-shaped board.
Further, the opening side of the U-shaped plate is fixedly connected with the front cover plate through screws.
Furthermore, a lock is arranged on one side of the front cover plate and matched with the locking mechanism.
Furthermore, one side of the front cover plate is hinged with one side of the opening of the structural part through a hinge; wherein,
one end of the hinge is fixedly connected with the hinge fixing plate;
the other end of the hinge is welded with one side of the front cover plate.
Further, the surfaces of the two sides of the structural part are provided with slide rails, and the slide rails are used for being conveniently installed and detached between the structural part and the cabinet.
Further, the inside of structure is equipped with the strengthening rib, the strengthening rib both ends respectively with structure lateral wall fixed connection, the strengthening rib is used for strengthening the steadiness of structure can also be used for the cable winding.
According to the invention, the terminal pieces are conveniently and quickly installed and replaced according to needs through the detachably installed terminal pieces, so that an operator only needs to connect a cable between the first terminal piece and the second terminal piece when configuring the cable, and the cable is more reasonably arranged. The arrangement space of the cable is integrated in one structural member, the occupied installation space is small, and the cost is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows an overall block diagram of an embodiment of the invention;
FIG. 2 shows a combination view of the three-layer mounting structure of FIG. 1;
FIG. 3 shows a power interface layer module installation diagram of an embodiment of the invention;
FIG. 4 shows a schematic view of an embodiment of the present invention after the front cover is opened;
fig. 5 shows a top view of an embodiment of the invention.
In the figure: the structure piece 1, 2U-shaped boards, 3 front shroud, 4 first DIN guide rails, 5 second DIN guide rails, 6 third DIN guide rails, 7 first terminal pieces, 8 second terminal pieces, 9 first line holes, 10 second line holes, 11 third line holes, 12 wire protecting sleeves, 13 filter modules, 14 hinge fixing plates, 15 hinges, 16 air-open modules, 17 lightning protection modules, 18 observation windows, 19 locks, 20 slide rails and 21 reinforcing ribs.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a universal power interface layer module for a railway signal system, which comprises a U-shaped groove-shaped structural part, a U-shaped plate and a front cover plate, wherein the U-shaped plate is arranged on the structural part;
the opening side of the U-shaped plate is fixedly connected with the front cover plate;
one side of the front cover plate is hinged with one side of the opening of the structural part;
a first DIN guide rail is arranged on the inner surface of the structural part, a first terminal piece is arranged on the surface of the first DIN guide rail, and the first terminal piece is detachably connected with the first DIN guide rail;
a second DIN guide rail is arranged on the outer surface of the U-shaped plate, a second terminal piece is arranged on the surface of the second DIN guide rail, and the second terminal piece is detachably connected with the second DIN guide rail;
the first terminal piece and the second terminal piece are used for configuration of a cable.
A first wire passing hole and a second wire passing hole are formed in the surface of the structural part, and the first wire passing holes are located on two sides of the first DIN guide rail; the second wire passing hole is close to one end of the first DIN rail. And the outer surface of the structural part is provided with a filter module. A hinge fixing plate is welded on one side of the opening of the structural member, and a lock closing mechanism is welded on the other side of the opening of the structural member. The surface of both sides of structure is equipped with the slide rail, the slide rail is used for conveniently installing and dismantling between structure and the rack. The inside of structure is equipped with the strengthening rib, the strengthening rib both ends respectively with structure lateral wall fixed connection, the strengthening rib is used for strengthening the steadiness of structure can also be used for the cable winding.
And a third wire passing hole is formed in the surface of the U-shaped plate and is positioned on two sides of the second DIN guide rail. The internal surface of U-shaped board is equipped with the third DIN guide rail, third DIN guide rail surface is equipped with empty module and the lightning protection module of opening, empty module and the lightning protection module of opening all with the third DIN guide rail can be dismantled and be connected.
The first wire passing hole and the third wire passing hole are respectively provided with a wire protecting sleeve at the inner edge position.
The surface of front shroud is equipped with the observation window, the observation window is used for observing the inside condition of U-shaped board. The opening side of the U-shaped plate is fixedly connected with the front cover plate through screws. And a lock is arranged on one side of the front cover plate and matched with the locking mechanism. One side of the front cover plate is hinged with one side of the opening of the structural part through a hinge; wherein,
one end of the hinge is fixedly connected with the hinge fixing plate;
the other end of the hinge is welded with one side of the front cover plate.
Fig. 1 shows an overall structure diagram of an embodiment of the present invention, and as shown in fig. 1, the power interface layer module mainly includes a three-layer mounting structure, wherein,
the first layer of mounting structure is a main structural member 1, and the structural member 1 is designed into a U-shaped groove shape, and can also be designed into other shapes which are adapted to the internal space structure of the cabinet, but is not limited to this. The structural member 1 is used for the incoming and outgoing lines of the power panel, and the external power cable is led in and led out through the U-shaped groove-shaped structural member 1. Furthermore, a power supply cable is led in from the lower right side of the opening of the U-shaped groove-shaped structural part 1 and is led out from the lower left side of the opening of the U-shaped groove-shaped structural part 1, the power supply lead-in cable and the lead-out cable are separated from each other in the left-right direction, power supply signals are not interfered with each other, and the reliability of power supply signal transmission is ensured.
The second layer of mounting structure is U-shaped board 2, the opening width of U-shaped board 2 is less than the opening width of structure 1, the height of U-shaped board 2 is not more than the height of structure 1.
The third layer of mounting structure is front shroud 3, the length of front shroud 3 with the opening width of structure 1 is the same, the width of front shroud 3 with the height of structure 1 is the same.
In fig. 1, the front surface of the structural member 1 is provided with the first DIN rail 4, the number of the first DIN rails 4 may be set to one or more, and may be increased or decreased as needed, and in the embodiment of the present invention, the number of the first DIN rails 4 is set to one for explanation. Further, a first DIN rail 4 is provided on the rear wall surface of the structural member 1. The rear wall of the structural member 1 is further provided with a plurality of first wire passing holes 9, and the first wire passing holes 9 are uniformly distributed on two sides of the first DIN guide rail 4. The edge position of the inside of the first wire passing hole 9 is provided with a wire protecting sleeve 12, the wire protecting sleeve 12 is used for protecting the cable in the first wire passing hole 9 from being worn, and the wire protecting sleeve 12 is made of rubber materials and can also be made of other soft materials. A second wire passing hole 10 is formed in the right side wall of the structural member 1, the second wire passing hole 10 is close to one end of the first DIN rail 4, and the second wire passing hole 10 is used for passing in and out of an additional cable. It should be noted that, in this embodiment, the left side wall of the structural member 1 is not provided with the wire passing hole, which does not mean that the left side wall cannot be provided with the wire passing hole, and the left side wall of the structural member 1 may be provided with the wire passing hole as needed. The welding of the opening right side of structure 1 has hinge 15 fixed plate, the welding of the opening left side of structure 1 has the lock closing mechanism. It should be noted that the positions of the hinge 15 fixing plate and the lock closing mechanism may be interchanged, and other suitable positions may be adopted.
The rear wall of the U-shaped plate 2 is provided with a plurality of third wire passing holes 11, and the edge positions inside the third wire passing holes 11 are also provided with wire protecting sleeves 12. An empty switch module 16 and a lightning protection module 17 are installed on the front face of the U-shaped plate 2, and the empty switch module 16 and the lightning protection module 17 are used for switching of a system power supply and detection of a lightning protection state.
The surface of front shroud 3 is equipped with observation window 18, and observation window 18 is equipped with two in this embodiment, corresponds empty module 16 and lightning protection module 17 respectively, is convenient for observe the condition of the inside empty module 16 of U-shaped plate 2 and lightning protection module 17. The left side of the front cover plate 3 is provided with a lock 19, and the lock 19 is matched with the locking mechanism. The position of the lock 19 may be set at another position as long as the position of the lock 19 corresponds to the position of the lock closing mechanism.
Fig. 2 shows the combination of fig. 1, and as shown in fig. 2, the open side of the U-shaped plate 2 is fixedly connected to the front cover plate 3 by screws. One side of the front cover plate 3 is hinged with one side of the opening of the structural member 1 through a hinge 15, wherein one end of the hinge 15 is fixedly connected with the hinge 15 fixing plate; the other end of the hinge 15 is welded to one side of the front cover plate 3. The lock 19 is connected with the locking mechanism in a matching way, so that the front cover plate 3 can be conveniently opened and closed.
The two side surfaces of the structural member 1 are provided with slide rails 20, and the slide rails 20 are used for being conveniently mounted and dismounted between the structural member 1 and the cabinet, so that the field configuration and maintenance of the power interface layer module are facilitated, as shown in fig. 3. It should be noted that the slide rail 20 can be installed and configured as required.
Fig. 4 is a schematic view showing the front cover 3 according to the embodiment of the present invention after being opened, and as shown in fig. 4, the front cover 3 can be rotated to open and close through the hinge 15, wherein the rotation angle of the hinge 15 is not less than 90 °. The front cover plate 3 in the embodiment of the invention adopts a hinge 15 structure, so that the installation and maintenance operation are convenient.
The structural member 1 is provided with one or more reinforcing ribs 21 inside, and in the present embodiment, one reinforcing rib 21 is taken as an example for description. The strengthening rib 21 both ends respectively with the left side wall and the right side wall fixed connection of structure 1, strengthening rib 21 is used for strengthening the steadiness of structure 1 can also be used for the cable winding, is convenient for comb the cable.
Fig. 5 shows a top view of an embodiment of the present invention, and as shown in fig. 5, a third DIN rail 6 is disposed on a front surface of the U-shaped plate 2, and the dummy module 16 and the lightning protection module 17 are fixedly clamped on the third DIN rail 6, so that the dummy module 16 and the lightning protection module 17 can be conveniently mounted and dismounted by means of clamping. The back of the structural member 1 is provided with a filter module 13, and the filter module 13 is used for removing an interfering power supply signal.
In the using process of the embodiment of the invention, the whole power interface layer module is firstly installed in the cabinet, as shown in fig. 3. When the cables in the power interface layer module need to be configured, the front cover plate 3 is opened, and the U-shaped plate 2 is opened along with the rotation of the front cover plate 3 because the U-shaped plate 2 is fixed with the front cover plate 3. After front shroud 3 and U-shaped board 2 are opened, outside cable gets into in the structure 1 from the lower right side of structure 1, directly receive external power source cable on first terminal piece 7, then on first terminal piece 7 disposes second terminal piece 8, cross line hole 11 and empty mould piece 16 through the third and be connected, be connected with lightning protection module 17 again, be connected with filter module 13 through first line hole 9 at last, the power supply of overall system is finally accomplished, the cable after the completion power supply is drawn forth from the lower left side of structure 1 again. When the length of the cable in the structural member 1 is long, the cable can be wound on the reinforcing ribs 21, so that the cable can be combed conveniently.
The PCB module power cable of the system may be configured onto the first terminal strip 7 of the structural member 1 before shipment. Therefore, the modularization of the power interface layer is completed, the power interface layer module is formed, the field installation configuration and maintenance operation are facilitated, the power supply of the PCB module of the system is met to the maximum extent, the installation space in the cabinet is reduced, and the maximum configuration requirement in the cabinet of the communication signal system is facilitated.
The power interface layer module can be correspondingly configured aiming at the configuration of PCB modules of different communication signal systems, and the structural member 1, the U-shaped plate 2 and the front cover plate 3 can be selectively configured according to the requirements of the system.
It should be noted that, in the embodiments of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "back", "reverse", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention or simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, cannot be construed as limiting the present invention. Also, the terms "first," "second," and the like are not used to denote a sequential relationship, but rather are used to distinguish one entity or operation from another.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (13)
1. The universal power interface layer module for the railway signal system is characterized by comprising a U-shaped groove-shaped structural part (1), a U-shaped plate (2) and a front cover plate (3);
the opening side of the U-shaped plate (2) is fixedly connected with the front cover plate (3);
one side of the front cover plate (3) is hinged with one side of the opening of the structural part (1);
a first DIN guide rail (4) is arranged on the inner surface of the structural part (1), a first terminal piece (7) is arranged on the surface of the first DIN guide rail (4), and the first terminal piece (7) is detachably connected with the first DIN guide rail (4);
a second DIN guide rail (5) is arranged on the outer surface of the U-shaped plate (2), a second terminal piece (8) is arranged on the surface of the second DIN guide rail (5), and the second terminal piece (8) is detachably connected with the second DIN guide rail (5);
the first terminal piece (7) and the second terminal piece (8) are used for arrangement of a cable.
2. The railway signal system universal power interface layer module as claimed in claim 1, wherein the surface of the structural member (1) is provided with a first wire through hole (9) and a second wire through hole (10);
the first wire through holes (9) are positioned at two sides of the first DIN rail (4);
the second wire through hole (10) is close to one end of the first DIN rail (4).
3. The railway signal system universal power interface layer module as claimed in claim 2, wherein the surface of the U-shaped plate (2) is provided with a third wire through hole (11);
the third wire through holes (11) are located on both sides of the second DIN rail (5).
4. The railway signal system universal power interface layer module as claimed in claim 3, wherein the first wire passing hole (9) and the third wire passing hole (11) are provided with wire protecting sleeves (12) at inner edge positions.
5. Railway signal system universal power interface layer module according to any of claims 1-4, characterized in that the outer surface of the structural part (1) is provided with filter modules (13).
6. Railway signal system universal power interface layer module according to any of the claims 1-4, characterized in that a hinged fixing plate (14) is welded on one side of the opening of the structural member (1) and a locking and closing mechanism is welded on the other side of the opening of the structural member (1).
7. Railway signal system universal power interface layer module according to any of the claims 1-4, characterized in that the inner surface of the U-shaped plate (2) is provided with a third DIN rail (6), the surface of the third DIN rail (6) is provided with an air opening module (16) and a lightning protection module (17), and the air opening module (16) and the lightning protection module (17) are both detachably connected with the third DIN rail (6).
8. Railway signal system universal power interface layer module according to any of claims 1-4, characterized in that the front cover plate (3) is provided with a viewing window (18) on its surface, said viewing window (18) being used to view the inside of said U-shaped plate (2).
9. Railway signal system universal power interface layer module according to any of claims 1-4, characterized in that the open side of the U-shaped plate (2) is fixedly connected to the front cover plate (3) by means of screws.
10. The railway signal system universal power interface layer module as claimed in claim 6, wherein a lock (19) is provided on one side of the front cover plate (3), and the lock (19) is matched with the locking mechanism.
11. The railway signal system universal power interface layer module as claimed in claim 6, wherein one side of the front cover plate (3) is hinged with the open side of the structural member (1) by a hinge (15); wherein,
one end of the hinge (15) is fixedly connected with the hinge fixing plate (14);
the other end of the hinge (15) is welded with one side of the front cover plate (3).
12. Railway signal system universal power interface layer module according to any of claims 1-4, characterized in that the two side surfaces of the structural member (1) are provided with sliding rails (20), and the sliding rails (20) are used for convenient mounting and dismounting between the structural member (1) and the cabinet.
13. The railway signal system universal power interface layer module as claimed in any one of claims 1 to 4, wherein the structural member (1) is provided with a reinforcing rib (21) inside, two ends of the reinforcing rib (21) are respectively and fixedly connected with the side wall of the structural member (1), and the reinforcing rib (21) is used for reinforcing the stability of the structural member (1) and also used for cable winding.
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| CN201674119U (en) * | 2010-04-20 | 2010-12-15 | 程安林 | Novel power distribution box |
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| CN203722065U (en) * | 2014-01-20 | 2014-07-16 | 安徽泰昂电力技术有限公司 | Feeder module device |
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| CN205159799U (en) * | 2015-11-30 | 2016-04-13 | 常州太平通讯科技有限公司 | General block terminal module of compact |
| JP2017203312A (en) * | 2016-05-12 | 2017-11-16 | シロキ工業株式会社 | Window regulator |
| CN207543455U (en) * | 2017-10-17 | 2018-06-26 | 上海悦达塞夫纳节能科技有限公司 | A kind of coil holder sliding rail of smart home centralized control cabinet |
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| CN209692205U (en) * | 2019-05-31 | 2019-11-26 | 施东 | Integrated inlaying grafting assembly formula distribution box |
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| CN110342434A (en) * | 2019-08-16 | 2019-10-18 | 杭叉集团股份有限公司 | A kind of electrical Centralized integrated control box of fork truck |
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| CN111372414B (en) | 2022-05-24 |
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