Linked protective device

Abstract

The present invention provides a linked protective device. Pairs of support columns are provided, with a first and second protective body positioned between them. A drive mechanism drives the first protective body to different openings. While the first and second protective bodies overlap, the first protective body pushes the second protective body via a support member, further expanding the protective device's opening and achieving different openings at different heights of the platform door. Furthermore, the distance between the support columns represents the horizontal opening of the platform door. Adjusting the distance between the support columns allows the platform door opening to be arbitrarily set. This addresses the drawbacks of casement platform doors, which have limited openings and occupy platform space. The device allows for flexible setting of the platform door opening without occupying platform space, effectively increasing the net opening of the platform door. The device can be modularly installed, facilitates construction, reduces costs, and meets the needs of different vehicle models, offering broad application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of platform protection devices, and in particular to a linkage protection device. Background Art

[0002] At present, platform protection structures are installed on subway, intercity, railway and other transportation platforms. The platform protection structure is set between the platform and the vehicle track, which plays the role of isolation and protection to ensure the safety of platform personnel.

[0003] Traditional platform door protection structures are swing-type, consisting of a wall fixed to the platform and a door that moves relative to the wall. However, when the swing-type platform door is open, the door overlaps the wall. Whether the platform door is open or closed, it occupies platform space. Therefore, the platform door's opening is affected by the length of the wall and the door itself, limiting its opening. When subway and intercity trains are of a single type, swing-type doors can still meet usage requirements when installed closely to the platform edge. However, when platform space is limited or when there are many train types, the platform door's clear opening needs to be increased to accommodate different types of trains and the door's opening position. However, swing-type platform doors fall far short of the desired clear opening, and their opening method restricts their applicability. Summary of the Invention

[0004] The present invention provides a linkage protection device for solving the defects of limited net opening and occupied space of the swing platform door in the prior art, realizing arbitrary selection of the platform door opening and saving platform space.

[0005] The present invention provides a linkage protection device, comprising:

[0006] Support columns are arranged in pairs, each of which is provided with a first track and a second track that are parallel to each other;

[0007] a first protective body, wherein both ends of the first protective body are respectively connected to the first rail, and the first protective body is provided with a supporting member;

[0008] a second protective body, wherein both ends of the second protective body are respectively connected to the second rail;

[0009] a driving mechanism, connected to the first protective body, and configured to drive the first protective body to move along the first track;

[0010] The first protective body has a first opening and a second opening;

[0011] At the first opening, the first protective body is staggered with the second protective body;

[0012] At the second opening, the first protective body overlaps with the second protective body, and a thrust is applied to the second protective body through the support to move the second protective body along the second track.

[0013] According to one embodiment of the present invention, the first track and the second track are vertically arranged, the first protective body is arranged in a vertical plane where the first track is located, and the second protective body is arranged in a vertical plane where the second track is located;

[0014] A limit block is provided on the second track, and the limit block is used to support the second protective body at the first opening position and the second opening position.

[0015] According to one embodiment of the present invention, both ends of the first protective body and the second protective body are provided with connecting members, and the connecting members are slidably connected to the first rail and the second rail respectively;

[0016] At the first opening, the connecting piece of the second protective body abuts against the limiting block.

[0017] According to an embodiment of the present invention, one end of the bracket is connected to the first protective body, and the other end extends to the plane where the second protective body is located.

[0018] According to one embodiment of the present invention, the driving mechanism includes a driver, a transmission member, a screw and a threaded sleeve, the driver is connected to one end of the transmission member, the other end of the transmission member is connected to the screw, the screw is parallel to the first track, and the threaded sleeve is connected to the first protective body and is sleeved on the screw.

[0019] According to one embodiment of the present invention, a counterweight guide rail parallel to the first track is provided in the support column, a counterweight block is provided on the counterweight guide rail, and a counterweight support wheel is also provided in the support column. The counterweight block is connected to the first protective body through a counterweight chain rope wound around the counterweight support wheel.

[0020] According to one embodiment of the present invention, the support column includes a bracket and a shell arranged outside the bracket, the first track, the second track and the driving mechanism are respectively arranged on the bracket, and the shell is provided with openings at positions corresponding to the first track and the second track.

[0021] According to one embodiment of the present invention, a wiring trough is further included. The wiring trough is provided on the top of the support column, and the wiring trough extends from one support column to the other support column.

[0022] According to one embodiment of the present invention, the third protective body and a third track provided on the support column are further included, wherein the third track is parallel to the first track, and both ends of the third protective body are connected to the third track;

[0023] The first protective body has a third opening, at which the first protective body, the second protective body and the third protective body overlap, and the first protective body applies a thrust to the second protective body through the support to move the second protective body along the second track, and the first protective body applies a thrust to the third protective body through the support to move the third protective body along the third track.

[0024] According to one embodiment of the present invention, a plurality of support columns are included, and the support columns are arranged in a straight line. The first protective body and the second protective body are respectively provided between adjacent support columns.

[0025] The linkage protection device provided by the present invention is provided with a pair of support columns, and a first track and a second track are respectively provided on opposite sides of the two support columns, a first protection body is provided between the first tracks, and a second protection body is provided between the second tracks, and the first protection body is driven by a driving mechanism to reach different openings; in the first opening, the first protection body and the second protection body are staggered, and the opening of the protection device is smaller; in the second opening, the first protection body and the second protection body overlap, and the second protection body is pushed to move by the support member to expand the opening of the protection device, thereby realizing different openings in the height direction of the platform door, and at the same time, the distance between the support columns is the horizontal opening of the platform door. The platform door opening can be arbitrarily set by setting the distance between the support columns, which solves the disadvantages of the casement platform door having a limited opening and occupying platform space, and realizes the free setting of the platform door opening without occupying platform space, thereby effectively improving the net opening of the platform door. The device can be installed in a modular manner and is suitable for the needs of platform installation modification. It can realize the rapid modification of platform doors, effectively improve construction efficiency, reduce labor costs, save time, and is easy to install and construct, highly practical, and can meet the needs of different vehicle models. It has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of the linkage protection device provided by the present invention;

[0028] Figure 2 It is an exploded view of the linkage protection device provided by the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the support column of the linkage protection device provided by the present invention;

[0030] Figure 4 is a side view of the linkage protection device provided by the present invention at a first opening;

[0031] Figure 5 is a side view of the linkage protection device provided by the present invention between the first and second openings;

[0032] Figure 6 is a side view of the linkage protection device provided by the present invention in the second opening position;

[0033] Figure 7 It is a side view of an embodiment of the linkage protection device provided by the present invention at a third opening;

[0034] Figure 8 It is a structural schematic diagram of another embodiment of the linkage protection device provided by the present invention.

[0035] Reference numerals:

[0036] 100: Support column; 110: First track; 120: Second track; 130: Third track; 210: First protective body; 220: Second protective body; 230: Third protective body; 300: Wire trough; 400: Connector; 501: Driver; 502: Transmission part; 503: Screw; 504: Threaded sleeve; 601: Counterweight; 602: Counterweight guide rail; 603: Counterweight chain; 604: Counterweight support wheel; 700: Support; 800: Limit block. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0040] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0042] The following combination Figures 1-8 Describe the specific embodiment of the present invention:

[0043] like Figure 1 As shown, an embodiment of the present invention provides a linked protective device comprising a support column 100 and a protective door. At least two support columns 100 are provided, and the two support columns 100 are arranged in pairs with a certain distance between them. A first track 110 and a second track 120 are provided on opposing surfaces of the two support columns 100, respectively. The first track 110 and the second track 120 are parallel to each other.

[0044] The protective door includes a first protective body 210 and a second protective body 220. The two ends of the first protective body 210 are respectively connected to the first rail 110, and an outwardly protruding support 700 is provided on the surface of the first protective body 210. The first protective body 210 slides between the two support columns 100 through the first rail 110.

[0045] Both ends of the second protective body 220 are connected to the second rails 120, and the second protective body 220 slides between the two support columns 100 via the second rails 120. The second protective body 220 and the first protective body 210 are parallel to each other and move in different planes.

[0046] This embodiment further includes a driving mechanism connected to the first protective body 210 , configured to drive the first protective body 210 to move along the first track 110 , and to provide power for the movement of the first protective body 210 .

[0047] In this embodiment, the door is installed at the edge of the platform during use. Preferably, the support column 100 of this embodiment is vertically arranged, the first track 110 and the second track 120 are vertically arranged, the first protective body 210 is arranged in the vertical plane of the first track 110, and the second protective body 220 is arranged in the vertical plane of the second track 120. In this way, the first and second protective bodies 210 and 220 can be raised and lowered in the vertical direction to achieve the vertical opening and closing of the platform door.

[0048] Of course, the support column 100 and the protective door of the present invention are not limited to vertical installation, and a certain offset in the vertical direction is also acceptable.

[0049] In this embodiment, the movement of the first protective body 210 and the second protective body 220 has two openings:

[0050] like Figure 4As shown, during the first opening, i.e., the process from closing the first protective body 210 to raising it to be flush with the second protective body 220, the second protective body 220 remains stationary and higher than the first protective body 210. At this point, the first and second protective bodies 210, 220, are staggered. When the first protective body 210 is fully opened, the first and second protective bodies 210, 220, overlap. Therefore, for the first opening, the maximum opening of the first protective body 210 is determined by the height of the bottom of the second protective body 220.

[0051] like Figure 5 and Figure 6 As shown, at the second opening, the first protective body 210 overlaps the second protective body 220; the first protective body 210 applies a thrust to the second protective body 220 via the support 700, causing the second protective body 220 to move along the second track 120. In other words, at the second opening, the first protective body 210 moves while simultaneously moving the second protective body 220, causing the second protective body 220 to rise and fall, further expanding the platform door's opening.

[0052] During this process, the rise of the second protective body 220 is achieved by the thrust of the first protective body 210, and the descent of the second protective body 220 is achieved by its own gravity. When the first protective body 210 is lowered, the second protective body 220 falls freely under gravity and stops at its initial height.

[0053] like Figure 4-Figure 6 As shown, in one embodiment, a limit block 800 is provided on the second track 120 , and the limit block 800 is used to support the second protective body 220 at the first opening. In other words, the height of the limit block 800 determines the lowest position of the second protective body 220 .

[0054] Preferably, the position of the limit block 800 on the second track 120 can be adjusted to facilitate adjustment of the lowest position of the second protective body 220 and to achieve adjustment of the maximum upper limit of the first opening.

[0055] In this embodiment, a pair of support columns 100 are provided, and a first track 110 and a second track 120 are provided on opposite sides of the two support columns 100, respectively. A first protective body 210 is provided between the first track 110, and a second protective body 220 is provided between the second track 120. The first protective body 210 is driven by a driving mechanism to achieve different opening degrees. In the first opening degree, the first protective body 210 and the second protective body 220 are staggered, and the opening degree of the protective device is relatively small. In the second opening degree, the first protective body 210 and the second protective body 220 overlap, and the second protective body 220 is pushed to move by the support member 700 to expand the opening degree of the protective device, thereby achieving different opening degrees of the platform door in the height direction. At the same time, the distance between the support columns 100 is the horizontal opening degree of the platform door. The platform door opening can be arbitrarily set by setting the distance between the support columns 100, thereby solving the disadvantages of the casement platform door having a limited opening degree and occupying platform space. The platform door opening degree can be freely set without occupying platform space, thereby effectively improving the net opening degree of the platform door.

[0056] The linkage protection device provided in this embodiment can also be installed in a modular manner. Since platform renovation is usually done at "window points" ("window points" refer to the time when train lines are not marked in the train timetable or train operations are adjusted or reduced to ensure time for engineering and maintenance work. In the shunting work in the dispatching yard, the gap between the vehicles parked in the tracks in the dispatching yard is called a window), the entire device is used as a standard modular unit. When the platform is renovated, multiple modular units can be directly assembled to achieve rapid renovation of the platform door, which effectively improves construction efficiency, reduces labor costs, saves time, and meets the renovation needs of "window points".

[0057] like Figure 2 and Figure 3 As shown, in one embodiment, connecting members 400 are respectively provided at both ends of the first protective body 210 and the second protective body 220 , and the connecting members 400 are slidably connected to the first rail 110 and the second rail 120 .

[0058] Specifically, two connecting pieces 400 are respectively provided at both ends of the first protective body 210 and the second protective body 220 . In the first opening, a connecting piece 400 located at the bottom of the second protective body 220 abuts against the limit block 800 .

[0059] Furthermore, the first track 110 and the second track 120 are both vertically arranged slide rails, and the connector 400 is sleeved on the slide rails. A drag-reducing universal wheel is provided inside the connector 400, and the connector 400 is slidably connected to the slide rails through the drag-reducing universal wheel.

[0060] like Figure 4-Figure 6As shown, in one embodiment, one end of the bracket 700 is connected to the first protective body 210 and the other end extends to the plane where the second protective body 220 is located, so that the bracket 700 can support the second protective body 220 and provide an upward thrust for the second protective body 220.

[0061] Specifically, the support 700 is a flat plate structure and is disposed at the bottom of the first protective body 210 . At the second opening, the support 700 abuts against the lower end of the second protective body 220 , so that the first protective body 210 and the second protective body 220 overlap.

[0062] Preferably, the support 700 can be provided on the connecting member 400 so that the support 700 is located inside the support column 100 , thereby improving the appearance of the platform door.

[0063] like Figure 3 As shown, in one embodiment, the driving mechanism includes a driver 501, a transmission member 502, a screw rod 503 and a threaded sleeve 504, the driver 501 is connected to one end of the transmission member 502, the other end of the transmission member 502 is connected to the screw rod 503, the screw rod 503 is parallel to the first track 110, and the threaded sleeve 504 is connected to the first protective body 210 and is sleeved on the screw rod 503.

[0064] In this embodiment, the driver 501 may be a motor or other device, and the transmission member 502 may be a transmission mechanism such as a gear assembly, a pulley, or a chain. Of course, the driving mechanism may also be a hydraulic cylinder or other mechanism, as long as it can achieve the raising and lowering of the platform door, and this is not a limitation here.

[0065] like Figure 3 As shown, in one embodiment, the first protective body 210 is further provided with a corresponding counterweight mechanism. Specifically, a counterweight guide rail 602 is provided in the support column 100 and is parallel to the first track 110. A counterweight block 601 is provided on the counterweight guide rail 602. A counterweight support wheel 604 is also provided in the support column 100. The counterweight block 601 is connected to the first protective body 210 via a counterweight chain 603 wound around the counterweight support wheel 604.

[0066] Of course, in this embodiment, not only the first protective body 210 is provided with a counterweight mechanism, but the second protective body 220 can also be provided with a counterweight mechanism. The connection method of the counterweight mechanism of the second protective body 220 is the same as that of the first protective body 210, which will not be repeated here.

[0067] like Figure 3 As shown, the counterweight mechanisms of the first protective body 210 and the second protective body 220 can be arranged in pairs, the counterweight support wheel 604 is provided at the top end inside the support column 100 , and the counterweight chain 603 can be connected to the corresponding connecting piece 400 .

[0068] The counterweight mechanism can reduce the self-weight of the first protective body 210 and the second protective body 220 accordingly, thereby reducing the load of the driving mechanism, and can also ensure the safety of the lifting and lowering of the first protective body 210 and the second protective body 220. At the same time, due to the provision of the counterweight mechanism, when the driving mechanism fails, the first protective body 210 and the second protective body 220 can automatically rise to prevent the platform door from being unable to open.

[0069] In this embodiment, the support column 100 includes a bracket and a housing disposed externally thereto. The first rail 110, second rail 120, drive mechanism, and counterweight mechanism are each disposed on the bracket. The housing has openings corresponding to the positions of the first rail 110 and second rail 120. The first and second protective bodies 210, 220 extend into the housing through the respective openings. The housing isolates the interior and exterior, ensuring safety while also providing aesthetics.

[0070] like Figure 1 and Figure 2 As shown, a wiring trough 300 is provided between the two support columns 100. The wiring trough 300 is provided at the top of the support columns 100 and extends from one support column 100 to the other support column 100. The wiring trough 300 is U-shaped, with the U-shaped opening of the wiring trough 300 facing downward and covering the platform door. Wiring can be arranged in the wiring trough 300 to connect the electronic components inside the two support columns 100, facilitating line management.

[0071] like Figure 7 As shown, in one embodiment, the platform door can also be provided with three layers, including a first protective body 210, a second protective body 220, and a third protective body 230. Correspondingly, the two support columns 100 are further provided with a third track 130. The third track 130 is parallel to the first track 110 and the second track 120, and the third protective body 230 is connected to the third track 130 at both ends. Here, the structure and connection method of the third protective body 230 can be the same as those of the first protective body 210 and the second protective body 220, and will not be repeated here.

[0072] In this embodiment, the initial position of the third protective body 230 is higher than the second protective body 220. Preferably, referring to the stopper 800 of the second protective body 220, another stopper 800 can be provided on the third track 130 at a position higher than the second protective body 220, and the third protective body 230 is supported by the stopper 800. To ensure the range of movement of each platform door, the three tracks are set to the same length.

[0073] Therefore, after reaching the second opening, the first protective body 210 can continue to rise and have a third opening. At the third opening, the first protective body 210, the second protective body 220 and the third protective body 230 overlap, and the first protective body 210 applies an upward thrust to the second protective body 220 through the support 700, and the first protective body 210 also applies an upward thrust to the third protective body 230 through the support 700.

[0074] like Figure 7 As shown, the first protective body 210 simultaneously drives the second protective body 220 and the third protective body 230 to rise through the support 700, further increasing the opening of the platform door in the height direction. When the first protective body 210 descends, the second protective body 220 and the third protective body 230 stop moving when they reach their respective lowest positions. At this time, the first protective body 210 is located at the lowest end, the second protective body 220 is located in the middle, and the third protective body 230 is located at the upper end. The first protective body 210, the second protective body 220 and the third protective body 230 are staggered with each other to jointly realize the closing of the platform door.

[0075] Based on this principle, the present invention is not limited to the first protective body 210, the second protective body 220 and the third protective body 230. In order to increase the opening height of the platform door, the number of platform doors can be set to multiple, and the overlapping and rising action of multiple platform doors can be realized. Therefore, the present invention does not make a sole limitation on the number of platform doors.

[0076] In this embodiment, two support columns 100 and the platform door therebetween form a lifting unit, but the present invention is not limited to two support columns 100. That is, a plurality of lifting units may be provided according to actual requirements of the platform.

[0077] like Figure 8 As shown, in one embodiment, a plurality of support columns 100 may be provided, and the support columns 100 are arranged in a straight line. A first protective body 210, a second protective body 220 or a third protective body 230 is provided between adjacent support columns 100, respectively. Multiple lifting units realize opening and closing of multiple doors to different degrees, thereby improving the practicality of the platform door.

[0078] In one embodiment, when both sides of the support column 100 are connected to the platform door, the support column 100 can be configured as a bilaterally symmetrical structure, such as Figure 3 As shown, tracks are respectively provided on the two opposite surfaces of the support column 100, so that one support column 100 plays the role of two support columns 100, which can reduce the material used for the support column and reduce the space occupied by the platform.

[0079] In this embodiment, the distance between two identical support columns 100 is the horizontal width of the platform door. The distances between different support columns 100 can be set in sequence to achieve the horizontal opening of the platform door. At the same time, since the support columns 100 adopt a vertical column structure, the horizontal width of the support columns 100 is small, thereby reducing the occupation of the platform space, and the horizontal opening of the platform door can be controlled to a larger value, meeting the opening requirements of the platform door for different vehicles.

[0080] Furthermore, the support column 100 platform damage restoration work is small, more suitable for projects with tight construction schedules. The device has a simple structure, convenient installation and construction, strong practicality, can meet the needs of different vehicle models, and has broad application prospects.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A linkage protection device, characterized in that: include: Support columns (100) are arranged in pairs, wherein the support columns (100) are provided with a first track (110) and a second track (120) that are parallel to each other; a first protective body (210), wherein both ends of the first protective body (210) are respectively connected to the first track (110), and the first protective body (210) is provided with a supporting member (700); a second protective body (220), wherein both ends of the second protective body (220) are respectively connected to the second track (120); a driving mechanism connected to the first protective body (210) and used for driving the first protective body (210) to move along the first track (110); The first protective body (210) has a first opening and a second opening; At the first opening, the first protective body (210) and the second protective body (220) are staggered; At the second opening, the first protective body (210) overlaps with the second protective body (220), and a thrust is applied to the second protective body (220) through the support (700) to move the second protective body (220) along the second track (120); The first track (110) and the second track (120) are arranged vertically, the first protective body (210) is arranged in a vertical plane where the first track (110) is located, and the second protective body (220) is arranged in a vertical plane where the second track (120) is located; A limit block (800) is provided on the second track (120), and the limit block (800) is used to support the second protective body (220) at the first opening position and the second opening position; One end of the bracket is connected to the first protective body, and the other end extends to the plane where the second protective body is located.

2. The linkage protection device according to claim 1, characterized in that: Connecting members (400) are respectively provided at both ends of the first protective body (210) and the second protective body (220), and the connecting members (400) are respectively slidably connected to the first track (110) and the second track (120); At the first opening, the connecting piece (400) of the second protective body (220) abuts against the limiting block (800).

3. The linkage protection device according to claim 1, characterized in that: The driving mechanism comprises a driver (501), a transmission member (502), a screw rod (503) and a threaded sleeve (504), wherein the driver (501) is connected to one end of the transmission member (502), and the other end of the transmission member (502) is connected to the screw rod (503), the screw rod (503) is parallel to the first track (110), and the threaded sleeve (504) is connected to the first protective body (210) and is sleeved on the screw rod (503).

4. The linkage protection device according to claim 1, characterized in that: A counterweight guide rail (602) parallel to the first track (110) is provided in the support column (100), a counterweight block (601) is provided on the counterweight guide rail (602), a counterweight support wheel (604) is further provided in the support column (100), and the counterweight block (601) is connected to the first protective body (210) via a counterweight chain (603) wound around the counterweight support wheel (604).

5. The linkage protection device according to claim 1, characterized in that: The support column (100) comprises a bracket and a shell arranged outside the bracket, the first track (110), the second track (120) and the driving mechanism are respectively arranged on the bracket, and the shell is provided with openings at positions corresponding to the first track (110) and the second track (120).

6. The linkage protection device according to claim 1, characterized in that: It also includes a wiring trough (300), wherein the wiring trough (300) is provided on the top of the support column (100), and the wiring trough (300) extends from one support column (100) to the other support column (100).

7. The linkage protection device according to any one of claims 1 to 6, characterized in that: It also includes a third protective body (230) and a third track (130) provided on the support column (100), the third track (130) being parallel to the first track (110), and both ends of the third protective body (230) being connected to the third track (130); The first protective body (210) has a third opening. At the third opening, the first protective body (210), the second protective body (220) and the third protective body (230) overlap. The first protective body (210) applies a thrust to the second protective body (220) through the support (700) to move the second protective body (220) along the second track (120). The first protective body (210) applies a thrust to the third protective body (230) through the support (700) to move the third protective body (230) along the third track (130).

8. The linkage protection device according to any one of claims 1 to 6, characterized in that: It comprises a plurality of support columns (100), wherein the support columns (100) are arranged in a straight line, and the first protective body (210) and the second protective body (220) are respectively provided between adjacent support columns (100).

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