CN218021596U - Train detection caisson - Google Patents

Abstract

The utility model relates to a railway vehicle safety inspection technique especially relates to a train detects caisson. The train detection caisson comprises a box body, a protective cover and a switch assembly, and at least one detection window is formed in the top end of the box body. The switch component comprises a double-rocker mechanism and a driving piece, the double-rocker mechanism comprises a support, a mounting seat, a first connecting rod and a second connecting rod, a protective cover is arranged at the upper end of the support, the mounting seat is arranged in the box body, the two ends of the first connecting rod are respectively in pivot connection with the mounting seat and the support, and the two ends of the second connecting rod are respectively in pivot connection with the mounting seat and the support. The driving piece can drive the double-rocker mechanism so that the bracket drives the protective cover to move in parallel between the opening position and the closing position; the protective cover moving to the closing position is arranged on the detection window, and the protective cover moving to the opening position is positioned on one side of the detection window. The double-rocker mechanism not only simplifies the internal structure of the train detection caisson, but also enables the process of opening and closing the detection window by the protective cover to be more stable and rapid.

Description

Train detects caisson

Technical Field

The utility model relates to a railway vehicle safety inspection technique especially relates to a train detects caisson.

Background

In order to ensure the safe operation of the train, a detection system is required to be installed on the train track main line and the throat of the train entering the garage. Generally, detection modules are installed in multiple directions of a train to realize accurate detection of the train, and the detection modules are generally placed in a box body or a box body in order to protect the safety of the detection modules. Wherein, the detection module that is located the train below and gathers the position adopts the train to detect the caisson protection. When the caisson works, a protective cover of the train detection caisson opens a detection window, and a detection module acquires the running parameters of the train through the detection window; after the collection is finished, the protective cover closes the detection window again to prevent sundries such as railway ballast, stones and the like from entering the train detection caisson so as to protect the detection module.

At present, the switch assembly of the protective cover is complex, so that the switch operation is inconvenient, and the space utilization rate of the interior of the train detection caisson is reduced. Meanwhile, when the protective cover is turned outwards to open the detection window, the protective cover is integrally in an inclined state or a vertical state, the overall height of the train detection caisson is increased, and damage caused by scratch and rubbing of a passing train is easily caused, so that the normal use of the protective cover is influenced.

Therefore, a need exists for a train inspection caisson to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a train detects caisson to simplify the structure, improve the convenience of the switch operation of protective cover, and reduce the whole height that the train after the protective cover is opened detects the caisson, improve the security.

To achieve the purpose, the utility model adopts the technical proposal that:

the utility model provides a train detects caisson, includes box and protective cover, and at least one detection window has been seted up on the top of box, and train detects caisson still includes the switch module, and the switch module includes:

the double-rocker mechanism comprises a support, a mounting seat, a first connecting rod and a second connecting rod, and the protective cover is arranged at the upper end of the support; the mounting seat is arranged in the box body; two ends of the first connecting rod are respectively pivoted on the mounting seat and the bracket, and two ends of the second connecting rod are respectively pivoted on the mounting seat and the bracket; and

the driving piece is configured to drive the double-rocker mechanism so that the bracket drives the protective cover to move in parallel between the opening position and the closing position; the protective cover lid that removes to closed position locates the detection window, and the protective cover that removes to open position is located one side of detection window.

Preferably, the first link includes:

the two ends of the main body rod are respectively connected to the mounting seat and the bracket in a pivot mode; and

one end of the transmission rod is connected with the main body rod, and the driving piece is in transmission connection with the other end of the transmission rod so as to drive the main body rod to rotate between the opening position and the closing position.

Preferably, the switch assembly further comprises:

the output shaft of the driving part is connected with one end of the third connecting rod, and the other end of the third connecting rod and the other end of the fourth connecting rod are sequentially connected with the other end of the transmission rod through a pivot.

Preferably, the switch assembly further comprises:

the other end of the third connecting rod is connected with one end of a fourth connecting rod through a first pin shaft pivot, and the other end of the fourth connecting rod is connected with the other end of the transmission rod through a second pin shaft pivot; and

the first sleeve is sleeved on the second pin shaft and clamped between the fourth connecting rod and the transmission rod.

Preferably, the main body rod comprises a first rod body and a second rod body which are connected in an L shape, one end of the first rod body is pivotally connected to the mounting seat, one end of the second rod body is pivotally connected to the bracket, and one end of the transmission rod is connected with the first rod body;

the second connecting rod comprises a third rod body, a fourth rod body and a fifth rod body which are sequentially connected, and the fourth rod body and the fifth rod body are connected to form an L shape; one end of the third rod body is pivotally connected to the mounting seat, and one end of the fifth rod body is pivotally connected to the bracket;

when the protective cover is positioned at the closed position, the second rod body and the fifth rod body are positioned in the box body, and the lengths of the second rod body and the fifth rod body extend along the vertical direction; when the protective cover was located open position, the second body of rod rotated to the box outside with the fifth body of rod, and both's length all extends along the horizontal direction.

Preferably, the mount includes:

the horizontal plate is arranged on the inner top wall of the box body; and

vertical board, one side downwardly extending of horizontal plate has vertical board, and vertical board encloses into the protection chamber with the horizontal plate, and the driving piece sets up in the protection intracavity.

Preferably, the switch assembly further comprises:

one end of the first connecting rod is connected to the outer side of the vertical plate through a third pin shaft pivot, and one end of the second connecting rod is connected to the outer side of the vertical plate through a fourth pin shaft pivot; the third pin shaft and the fourth pin shaft have the same horizontal height; and

the other end of the first connecting rod is connected to the support through a fifth pin shaft, and the other end of the second connecting rod is connected to the support through a sixth pin shaft; the fifth pin shaft and the sixth pin shaft have the same horizontal height and are higher than the horizontal height of the third pin shaft and the fourth pin shaft.

As a preferred scheme, the switch assembly further comprises a second sleeve, and the second sleeve is sleeved on the fourth pin shaft and clamped between the second connecting rod and the vertical plate;

the support is provided with lug plates in a downward protruding mode, and the first connecting rod and the second connecting rod are located on two sides of the lug plates in the thickness direction respectively.

As preferred scheme, two detection windows are seted up at the top of box, and two protective covers can be followed opposite direction translation to one side of the detection window that corresponds to make two protective covers form the structure of running from opposite directions.

Preferably, the case includes:

the box comprises a box shell and a box cover, wherein a detection window is formed in the box cover and is communicated with the inside of the box shell, and the box shell is rotatably connected with the box cover through a hinge so that the box shell can be opened or closed by the box cover.

The beneficial effects of the utility model are that:

the utility model provides a train detects caisson, support, mount pad, first connecting rod and second connecting rod constitute two rocker mechanism, and the protective cover sets up in the upper end of support to make the protective cover set up in the top of box through two rocker mechanism activity. When the driving piece drives the double-rocker mechanism, the first connecting rod and the second connecting rod rotate so that the support drives the protective cover to move back and forth between the opening position and the closing position. When the protective cover moves to the closed position, the cover is arranged on the detection window, so that the detection window is closed. The protective cover is positioned at one side of the detection window when moved to the open position, thereby opening the detection window. The protective cover realizes parallel translation through two rocker mechanisms, has not only simplified the inner structure that the train detected the caisson, is favorable to improving the inside space utilization of train detection caisson, and the process that the protective cover was opened and was closed the detection window is more steady, swift moreover for the removal process simple accurate of protective cover.

In addition, because the protective cover passes through one side of double rocker mechanism parallel translation to detection window for the protective cover that is located the open position keeps the horizontality, is in slope or vertical state for the protective cover that is located the open position at present, the utility model provides a horizontality's protective cover can reduce the whole height of train detection caisson during operation, makes things convenient for the installation and the use of train detection caisson, has avoided protective cover and the train of process to take place to cut to scratch and lead to the damage, is favorable to improving the security that train detected the caisson.

Drawings

Fig. 1 is a schematic structural view of a train inspection caisson with a protective cover in a closed position according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a train inspection caisson with a protective cover in an open position according to an embodiment of the present invention;

fig. 3 is a first schematic structural diagram of a switch assembly with a protective cover in a closed position according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a switch assembly with a protective cover in a closed position according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of two switch assemblies with the protective cover in the closed and open position according to an embodiment of the present invention.

The component names and designations in the drawings are as follows:

1. a box body; 11. a cabinet housing; 12. a box cover; 121. detecting a window; 13. a hinge; 14. a handle; 2. a protective cover; 10. a drive member;

3. a support; 31. an ear plate; 4. a mounting seat; 41. a horizontal plate; 42. a vertical plate; 5. a first link; 51. a first rod body; 52. a second rod body; 53. a transmission rod; 6. a second link; 61. a third rod body; 62. a fourth rod body; 63. a fifth rod body; 7. a third link; 8. a fourth link;

91. a first pin shaft; 92. a second pin shaft; 93. a first sleeve; 94. a third pin shaft; 95. a fourth pin shaft; 96. a fifth pin shaft; 97. a sixth pin shaft; 98. a second sleeve.

Detailed Description

In order to make the technical problems, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further explained below by means of specific embodiments in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the elements relevant to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present embodiment discloses a train inspection caisson, which is generally installed in a rail to detect an operation parameter of a passing train.

Specifically, train detects caisson includes box 1, protective cover 2 and detection module, and at least one detection window 121 has been seted up on the top of box 1, and every protective cover 2 can open or close corresponding detection window 121. A detection module is installed in the box body 1 and can detect the running parameters of passing trains through the opened detection window 121. It can be understood that the detection module can be selected according to different detection requirements, and the specific structure and the working process are not described any more since the detection module is a mature product in the field.

The box 1 of the embodiment includes a box shell 11 and a box cover 12, a detection window 121 is provided on the box cover 12, the detection window 121 is communicated with the inside of the box shell 11, and the box shell 11 is rotatably connected with the box cover 12 through a hinge 13, so that the box cover 12 can open or close the box shell 11. When the parts inside the box shell 11 need to be installed or replaced (for example, the detection module), the box cover 12 can quickly open the box shell 11 through the hinge 13, so that the installation and the use of the train detection caisson are facilitated.

Before a train to be detected passes through the train detection caisson, the protective cover 2 opens the detection window 121, and the detection module detects the running parameters of the train through the detection window 121. After the train passes through the train detection caisson, the protective cover 2 closes the detection window 121 to prevent impurities such as ballast stones from entering the box body 1, and the protection of the detection module is realized.

In order to facilitate the movement and installation of the train detection caisson, the box body 1 further comprises a handle 14, the handle 14 is U-shaped, and two axial ends of the handle 14 are fixedly installed at the upper end of the box cover 12, so that an operator can conveniently hold the handle 14.

As shown in fig. 2, the edge of the detection window 121 is protruded upward to form a rib, and the cover 12 is covered on the rib. Rubber ring is installed to protective cover 2's interior roof, and when protective cover 2 lid was located detection window 121, the rubber ring clamp was located between flange and the protective cover 2, played the buffering guard action to avoid flange and protective cover 2 to bump.

The structure of the switch assembly of the conventional protective cover is complex, so that the protective cover is inconvenient to switch and operate, and the space utilization rate of the interior of the train detection caisson is reduced. Meanwhile, when the existing protective cover is turned outwards to open the detection window, the protective cover is integrally in an inclined state or a vertical state, the overall height of the train detection caisson is increased, and damage caused by scratch and rubbing of a passing train is easy to occur.

In order to solve the above problems, as shown in fig. 2 to 5, the train detection caisson of this embodiment further includes a switch assembly, the switch assembly includes a double-rocker mechanism and a driving element 10, the double-rocker mechanism includes a support 3, a mounting seat 4, a first connecting rod 5 and a second connecting rod 6, and the protective cover 2 is disposed on the upper end of the support 3. The mounting seat 4 is arranged in the box body 1. Two ends of the first connecting rod 5 are respectively pivoted on the mounting seat 4 and the bracket 3, and two ends of the second connecting rod 6 are respectively pivoted on the mounting seat 4 and the bracket 3. The driving member 10 can drive the double-rocker mechanism to make the bracket 3 drive the protecting cover 2 to move in parallel between the open position and the closed position. The protection cover 2 moved to the closed position covers the detection window 121, and the protection cover 2 moved to the open position is located on one side of the detection window 121.

In this embodiment, support 3, mount pad 4, first connecting rod 5 and second connecting rod 6 constitute double-rocker mechanism, and protective cover 2 sets up in the upper end of support 3 for protective cover 2 and support 3 synchronous motion, thereby make protective cover 2 set up in the top of box 1 through double-rocker mechanism activity. When the driving member 10 drives the double-rocker mechanism, the first link 5 and the second link 6 rotate, so that the support 3 drives the protecting cover 2 to move back and forth between the open position and the closed position. The cover is provided to the detection window 121 when the barrier cover 2 is moved to the closed position, thereby closing the detection window 121. The barrier cover 2 is positioned at one side of the detection window 121 when moved to the open position, thereby opening the detection window 121. The protective cover 2 realizes parallel movement through the double-rocker mechanism, so that the internal structure of the train detection caisson is simplified, the space utilization rate of the train detection caisson is improved, and the process of opening and closing the detection window 121 by the protective cover 2 is more stable and quicker, so that the moving process of the protective cover 2 is simple and easy to implement.

In addition, because the protective cover 2 moves to one side of the detection window 121 in parallel through the double-rocker mechanism, the protective cover 2 keeps a horizontal state, the overall height of the train detection caisson during working can be reduced, the train detection caisson is convenient to install and use, damage caused by scraping and rubbing of the protective cover 2 and a passing train is avoided, and the safety of the train detection caisson is improved.

As shown in fig. 2, two detection windows 121 are opened at the top end of the box body 1 of the present embodiment, and two protection covers 2 can translate to one side of the corresponding detection window 121 along opposite directions, so that the two protection covers 2 form a side-by-side structure, thereby preventing the two protection covers 2 from translating along the same direction, and causing the protection cover 2 to shield the adjacent detection window 121, thereby ensuring the normal use of the train detection caisson. Of course, the number of the detection windows 121 can be flexibly adjusted according to the detection requirement.

As shown in fig. 3 and 4, the bracket 3 is fixedly connected with the protecting cover 2 through bolts, and the rubber ring is arranged around the bracket 3. The bracket 3 is provided with a fabrication hole to reduce the weight of the bracket 3. When the barrier cover 2 is moved to the closed position, the upper end face of the bracket 3 is substantially flush with the upper end face of the rib of the detection window 121.

In this embodiment, a set of mounting seat 4, a first connecting rod 5 and a second connecting rod 6 are all installed at one end of each support 3 along the length direction thereof, so that two sets of double-rocker mechanisms are formed on the supports 3 and are connected through the supports 3, and because the connection relation and the motion process of each part of the two sets of double-rocker mechanisms are the same, the stress of the supports 3 is uniform, and the stability of the protective cover 2 in parallel movement between the opening position and the closing position is improved.

It should be noted that only one driving member 10 is assembled in each set of double-rocker mechanism, so that one set of the two sets of double-rocker mechanisms is a driving double-rocker mechanism, and the other set of the two sets of double-rocker mechanisms is a driven double-rocker mechanism, thereby realizing synchronous rotation of the two sets of double-rocker mechanisms. For a driving piece 10 is assembled separately for each group of double-rocker mechanism, the structure is simplified, the assembly cost is reduced, and the control difficulty of the driving piece 10 is reduced.

As shown in fig. 3, the mounting seat 4 includes a horizontal plate 41 and a vertical plate 42, the horizontal plate 41 is disposed on an inner top wall of the box body 1, the vertical plate 42 extends downward from one side of the horizontal plate 41, the vertical plate 42 and the horizontal plate 41 enclose a protection cavity, and the driving element 10 is disposed in the protection cavity. Not only has realized the compact installation of driving piece 10 with mount pad 4, has avoided driving piece 10 to occupy the inner space of box 1, but also can play the isolation protection effect to driving piece 10.

As shown in fig. 3 and 4, the switch assembly further includes a third pin 94, a fourth pin 95, a fifth pin 96, and a sixth pin 97, one end of the first link 5 is pivotally connected to the outer side of the vertical plate 42 through the third pin 94, and one end of the second link 6 is pivotally connected to the outer side of the vertical plate 42 through the fourth pin 95. The third pin 94 is at the same level as the fourth pin 95. The other end of the first link 5 is pivotally connected to the bracket 3 by a fifth pin 96, and the other end of the second link 6 is pivotally connected to the bracket 3 by a sixth pin 97. The fifth pin 96 and the sixth pin 97 have the same horizontal height, and are higher than the horizontal height of the third pin 94 and the fourth pin 95.

Further, as shown in fig. 5, the bracket 3 is provided with an ear plate 31 protruding downward, and the first link 5 and the second link 6 are respectively located at two sides of the ear plate 31 along the thickness direction thereof. The switch assembly further comprises a second sleeve 98, the second sleeve 98 is sleeved on the fourth pin shaft 95 and clamped between the second connecting rod 6 and the vertical plate 42, so that a sufficient distance is kept between the first connecting rod 5 and the second connecting rod 6, friction between the first connecting rod 5 and the second connecting rod 6 in the rotating process is avoided, and reliable swinging of the double-rocker mechanism is achieved.

Specifically, the two ends of the bracket 3 along the length direction thereof are respectively provided with an ear plate 31, the first connecting rod 5 and the second connecting rod 6 of the driving double-rocker mechanism are respectively in pivot connection with one ear plate 31, and the first connecting rod 5 and the second connecting rod 6 of the driven double-rocker mechanism are respectively in pivot connection with the other ear plate 31.

As shown in fig. 3 and 4, the first link 5 includes a main body rod and a transmission rod 53, and two ends of the main body rod are respectively pivotally connected to the mounting base 4 and the bracket 3. One end of the transmission rod 53 is connected with the main body rod, and the driving member 10 is in transmission connection with the other end of the transmission rod 53 to drive the main body rod to rotate between the opening position and the closing position.

Specifically, as shown in fig. 2 to 5, the main body rod includes a first rod 51 and a second rod 52 connected in an L shape, one end of the first rod 51 is pivotally connected to the mounting base 4, one end of the second rod 52 is pivotally connected to the bracket 3, and one end of the transmission rod 53 is connected to the first rod 51. The second connecting rod 6 comprises a third rod body 61, a fourth rod body 62 and a fifth rod body 63 which are connected in sequence, and the fourth rod body 62 and the fifth rod body 63 are connected in an L shape. One end of the third rod 61 is pivotally connected to the mounting base 4, and one end of the fifth rod 63 is pivotally connected to the bracket 3. When the protecting cover 2 is located at the closed position, the second rod 52 and the fifth rod 63 are located inside the box 1, and both lengths of the second rod and the fifth rod extend in the vertical direction. When the protective cover 2 was located the open position, the second body of rod 52 rotated to the box 1 outside with the fifth body of rod 63, and length between them all extends along the horizontal direction to make protective cover 2 parallel with the up end of case lid 12, protective cover 2 is the horizontality promptly, has reduced the whole height of train detection caisson during operation, has improved the security that the train detected the caisson.

The driving member 10 of the present embodiment is a rotating electrical machine, and has high control precision and is convenient to install and use. Of course, the driving member 10 may be a rotary cylinder or the like, and is not particularly limited thereto.

Specifically, in the active double-rocker mechanism, the driving member 10 drives the main rod to rotate through the transmission rod 53, and the main rod and the second connecting rod 6 rotate synchronously, so as to drive the bracket 3 to move in parallel between the open position and the closed position. Simultaneously, initiative double rocker mechanism passes through support 3 and drives driven double rocker mechanism synchronous rotation to make support 3 atress even, make protective cover 2 realize stable, reliable parallel translation, avoid taking place to deflect or the card is dead.

It should be noted that when the first link 5 rotates, the distance between the transmission rod 53 and the output shaft of the driver 10 is dynamically changed. Specifically, as shown in fig. 3 and 5, when the barrier cover 2 is moved in parallel from the closed position to the open position, the first link 5 rotates from the inside of the housing 11 toward the outside of the housing 11, and the transmission lever 53 is gradually brought close to the output shaft of the driver 10, so that the distance between the transmission lever 53 and the output shaft of the driver 10 becomes gradually smaller. When the protecting cover 2 moves from the open position to the closed position in parallel, the first link 5 rotates from the outside of the housing 11 to the inside of the housing 11, and the transmission rod 53 gradually moves away from the output shaft of the driving member 10, so that the distance between the transmission rod 53 and the output shaft of the driving member 10 gradually increases.

As shown in fig. 3 and 5, the switch assembly further includes a third link 7 and a fourth link 8, an output shaft of the driving member 10 is connected to one end of the third link 7, and the other end of the third link 7, the fourth link 8 and the other end of the transmission rod 53 are sequentially pivotally connected. Because the third connecting rod 7 and the fourth connecting rod 8 are in pivot connection, the size of the included angle between the third connecting rod 7 and the fourth connecting rod 8 can be changed to adapt to the situation that the distance between the transmission rod 53 and the output shaft of the driving part 10 is in dynamic change, and the power transmission between the output shaft of the driving part 10 and the first connecting rod 5 is realized. In addition, a multi-link structure is formed between the third link 7, the fourth link 8 and the transmission rod 53, which not only facilitates power transmission of the driving member 10, but also facilitates flexible arrangement of the driving member 10.

Specifically, the switch assembly further includes a first pin 91, a second pin 92 and a first sleeve 93, the other end of the third link 7 is pivotally connected to one end of the fourth link 8 through the first pin 91, and the other end of the fourth link 8 is pivotally connected to the other end of the transmission rod 53 through the second pin 92. The first sleeve 93 is sleeved on the second pin 92 and clamped between the fourth link 8 and the transmission rod 53.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a train detects caisson, includes box (1) and protective cover (2), at least one detection window (121) have been seted up on the top of box (1), its characterized in that, train detects caisson still includes switch module, switch module includes:

the double-rocker mechanism comprises a support (3), a mounting seat (4), a first connecting rod (5) and a second connecting rod (6), and the protective cover (2) is arranged at the upper end of the support (3); the mounting seat (4) is arranged in the box body (1); two ends of the first connecting rod (5) are respectively connected to the mounting seat (4) and the support (3) in a pivot mode, and two ends of the second connecting rod (6) are respectively connected to the mounting seat (4) and the support (3) in a pivot mode; and

a driving piece (10) configured to drive the double-rocker mechanism so that the bracket (3) drives the protective cover (2) to move in parallel between an open position and a closed position; the protective cover (2) which is moved to the closed position is covered on the detection window (121), and the protective cover (2) which is moved to the open position is positioned on one side of the detection window (121).

2. Train detection caisson according to claim 1, characterized in that said first connection rod (5) comprises:

the two ends of the main body rod are respectively connected to the mounting seat (4) and the bracket (3) in a pivot mode; and

one end of the transmission rod (53) is connected with the main body rod, and the driving piece (10) is in transmission connection with the other end of the transmission rod (53) so as to drive the main body rod to rotate between the opening position and the closing position.

3. The train detection caisson of claim 2, wherein said switch assembly further comprises:

the output shaft of the driving piece (10) is connected with one end of the third connecting rod (7), and the other end of the third connecting rod (7) and the other end of the fourth connecting rod (8) are sequentially in pivot connection with the other end of the transmission rod (53).

4. The train detection caisson of claim 3, wherein said switch assembly further comprises:

the other end of the third connecting rod (7) is pivotally connected with one end of the fourth connecting rod (8) through the first pin shaft (91), and the other end of the fourth connecting rod (8) is pivotally connected with the other end of the transmission rod (53) through the second pin shaft (92); and

and the first sleeve (93) is sleeved on the second pin shaft (92) and clamped between the fourth connecting rod (8) and the transmission rod (53).

5. The train detection caisson according to claim 2, wherein said body rod comprises a first rod (51) and a second rod (52) connected in L-shape, one end of said first rod (51) being pivotally connected to said mounting seat (4), one end of said second rod (52) being pivotally connected to said support (3), one end of said transmission rod (53) being connected to said first rod (51);

the second connecting rod (6) comprises a third rod body (61), a fourth rod body (62) and a fifth rod body (63) which are sequentially connected, and the fourth rod body (62) and the fifth rod body (63) are connected to form an L shape; one end of the third rod body (61) is pivotally connected to the mounting seat (4), and one end of the fifth rod body (63) is pivotally connected to the bracket (3);

when the protective cover (2) is positioned at the closed position, the second rod body (52) and the fifth rod body (63) are positioned inside the box body (1), and the lengths of the second rod body and the fifth rod body extend along the vertical direction; when the protective cover (2) is located at the opening position, the second rod body (52) and the fifth rod body (63) rotate to the outer side of the box body (1), and the lengths of the second rod body and the fifth rod body extend along the horizontal direction.

6. The train detection caisson according to claim 1, characterized in that said mounting seat (4) comprises:

the horizontal plate (41) is arranged on the inner top wall of the box body (1); and

vertical board (42), one side downwardly extending of horizontal plate (41) has vertical board (42), vertical board (42) with horizontal plate (41) enclose into the protection chamber, driving piece (10) set up in the protection chamber.

7. The train detection caisson of claim 6, wherein said switch assembly further comprises:

a third pin shaft (94) and a fourth pin shaft (95), wherein one end of the first connecting rod (5) is pivotally connected to the outer side of the vertical plate (42) through the third pin shaft (94), and one end of the second connecting rod (6) is pivotally connected to the outer side of the vertical plate (42) through the fourth pin shaft (95); the third pin shaft (94) and the fourth pin shaft (95) have the same horizontal height; and

the other end of the first connecting rod (5) is pivotally connected to the support (3) through the fifth pin shaft (96), and the other end of the second connecting rod (6) is pivotally connected to the support (3) through the sixth pin shaft (97); the horizontal heights of the fifth pin shaft (96) and the sixth pin shaft (97) are the same, and are higher than the horizontal heights of the third pin shaft (94) and the fourth pin shaft (95).

8. The train detection caisson of claim 7, wherein the switch assembly further comprises a second sleeve (98), the second sleeve (98) being sleeved on the fourth pin (95) and clamped between the second connecting rod (6) and the vertical plate (42);

support (3) downward protruding be equipped with otic placode (31), first connecting rod (5) with second connecting rod (6) are located respectively otic placode (31) are along the both sides of its thickness direction.

9. The train detection caisson of any one of claims 1 to 8, wherein two detection windows (121) are opened at the top end of the caisson (1), and the two protection covers (2) can be translated to one side of the corresponding detection windows (121) in opposite directions, so that the two protection covers (2) form a split door structure.

10. The train detection caisson according to any of claims 1 to 8, characterised in that said box (1) comprises:

case shell (11) and case lid (12), seted up on case lid (12) detection window (121), detection window (121) with the inside intercommunication of case shell (11), case shell (11) with case lid (12) are through hinge (13) swivelling joint, so that case lid (12) can be opened or close case shell (11).

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