Detection lever seal anti-rotation structure of a switch machine and switch machine

Abstract

The utility model discloses a detection rod seal anti -rotation structure and switch machine of switch machine, and the detection rod seal anti -rotation structure of switch machine sets up in switch machine bottom shell, includes detection rod subassembly, protection pipe end seal anti -rotation subassembly and detection rod extension end seal subassembly, and detection rod subassembly transversely is set up in switch machine bottom shell front end, and switch machine bottom shell left and right sides are corresponded with the position of detection rod subassembly left and right ends, respectively set up protection pipe end seal anti -rotation subassembly and detection rod extension end seal subassembly, and the left end of detection rod subassembly is located in protection pipe end seal anti -rotation subassembly, and detection rod subassembly includes two detection rods that are parallel to each other, and two detection rods have anti -rotation limit position to protection pipe end seal anti -rotation subassembly side, and the anti -rotation limit position has anti -rotation structure on. The utility model can significantly reduce the turning angle of detection rod when bearing external torsional force, alleviate the abrasion caused by turning of detection rod, reduce the maintenance workload of staff on site, and reduce the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of railway turnout switching equipment, and in particular to a detection rod sealing anti-rotation structure for a switch machine and the switch machine itself. Background Technology

[0002] A switch machine is a crucial signaling infrastructure device used to reliably switch the position and direction of railway turnouts, lock the turnout points, and reflect the position and status of the turnouts. It effectively ensures train operation safety, improves transportation efficiency, and reduces the workload of train operators. To extend the service life of switch machines, sealed switch machines have emerged. The sealing performance of a sealed switch machine directly affects the condition of its internal components and its overall lifespan.

[0003] The function of a switch machine is to switch and lock the point rail (spot rail), change the opening direction of the turnout, and reflect the position status of the point rail (spot rail) through contact points. The switch machine is one of the important pieces of equipment ensuring railway transportation safety. If the switch machine fails to switch the turnout properly, it will affect the normal train operation order, and in severe cases, may lead to train collisions or derailments. Therefore, the switch machine is the electric traction equipment for railway turnouts, and its reliability is crucial to the safety of railway transportation.

[0004] For switch machines, the switch machine notch (i.e., the switch machine indicator notch) reflects the tightness and position of the switch's point rail (spot rail) and the stock rail (wing rail). If the point rail and stock rail are not properly fitted, it may cause serious consequences such as train derailment. The internal notch of the switch machine indirectly reflects the tightness of the connection between the switch's point rail and the stock rail; therefore, its working condition directly affects train operation safety. If the point rail and stock rail are not properly fitted, it may cause serious consequences such as train derailment.

[0005] A switch machine includes two parallel indicator rods. One indicator rod has a notch at its top right end, and the other indicator rod has a notch at its top left end. Above each notch is a check post. When the switch is switched into position, one of the check posts inside the switch machine falls into the notch of the indicator rod below it. The notch is the gap between the edge of the notch on the indicator rod and the check post.

[0006] Adjusting the notch on the switch machine indicator lever is a crucial step in ensuring proper turnout switching and guaranteeing safe train operation. The notch value reflects the tightness of the contact between the switch rail and the stock rail, and its size directly affects the turnout's indication function. If the notch value is too large or too small, the indicator lever cannot lock properly, directly affecting the turnout's operation. For example, when the notch value is too large, the indicator lever cannot make close contact with the inspection post, resulting in a no-indication fault for the turnout and affecting train safety.

[0007] In other words, the main reason for adjusting the notch on the switch machine indicator rod is to ensure that the tight fit between the turnout tip rail and the stock rail meets the technical requirements, so as to avoid the switch machine being unable to lock properly due to excessive or insufficient gap, which would affect the turnout operation.

[0008] With the large-scale construction of railways and urban rail transit in my country, the equipment scale of switch machines has spread throughout the country. The number of sealed switch machines used on site is increasing day by day. For the existing sealed switch machines, the electrical staff need to check the gaps of the switch machines regularly and adjust the size of the gaps on site in a timely manner when the gap value is too large or too small.

[0009] Currently, when electrical maintenance workers adjust the notches on the switch machine's indicator rods on-site and tighten the original adjusting bolts on the two indicator rods (one long and one short), the two indicator rods will transmit torsional force to the two original detection rods of the switch machine (based on the original structural design of the switch machine, the two indicator rods will transmit torsional force to the two detection rods). At this time, the two detection rods of the switch machine will flip to a certain extent, resulting in a large gap between the two detection rods and causing the detection rods to wear out more quickly.

[0010] Therefore, there is an urgent need to develop a technology that can solve the above-mentioned technical problems. Utility Model Content

[0011] The purpose of this utility model is to address the technical deficiencies of the existing technology by providing a sealing anti-rotation structure for the detection rod of a switch machine and the switch machine itself.

[0012] Therefore, this utility model provides a detection rod sealing and anti-rotation structure for a switch machine, which is installed on the bottom shell of the switch machine and includes a detection rod assembly, a protective tube end sealing and anti-rotation assembly, and a detection rod protruding end sealing assembly; The detection rod assembly is horizontally installed at the front end of the bottom shell of the switch machine; On the left and right sides of the bottom shell of the switch machine, at positions corresponding to the left and right ends of the detection rod assembly, there are respectively a protective tube end sealing anti-rotation assembly and a detection rod protrusion end sealing assembly; The left end of the detection rod assembly is located inside the protective tube end sealing anti-rotation assembly; The detection rod assembly includes two detection rods arranged in parallel to each other; The two detection rods have anti-rotation limiting parts on the side facing the protective tube end sealing anti-rotation assembly; The anti-rotation limiting part has an anti-rotation structure; The protective tube end sealing anti-rotation assembly is used to seal and protect the left end of the detection rod assembly and to constrain the position of the left end of the detection rod assembly. The right end of the detection rod assembly extends laterally through the sealing assembly at the protruding end of the detection rod; The probe extension sealing assembly is used to seal and protect the right end of the probe assembly.

[0013] In addition, this utility model also provides a switch machine, which includes the detection rod sealing anti-rotation structure of the switch machine as described above, and the device housing of the switch machine; The housing of a switch machine includes the switch machine base and the machine cover; The cover seal is located on the top of the hollow bottom shell of the switch machine, which has an opening at the top.

[0014] As can be seen from the technical solution provided by this utility model above, compared with the prior art, this utility model provides a sealing and anti-rotation structure for the detection rod of a switch machine and a switch machine. The structure is scientifically designed and can significantly reduce the rotation angle of the detection rod when subjected to external torsional force, reduce the accelerated wear of the detection rod caused by rotation, thereby reducing the workload of on-site maintenance and lowering maintenance costs, which has significant practical significance.

[0015] After testing, the technical solution of this utility model can be applied to sealed electric switch machines, ensuring the sealing function of the switch machine and achieving an IP67 protection level. The anti-rotation limiting part of the square structure on the detection rod and the square anti-rotation limiting hole of the detection rod on the sealing anti-rotation sleeve cooperate with each other, which helps to reduce the flipping angle generated when the detection rod of the switch machine is subjected to torsional force. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the detection rod sealing and anti-rotation structure of the switch machine provided by this utility model when applied to a switch machine, that is, a schematic diagram of the structure of a switch machine provided by this utility model. Figure 2 A schematic diagram of the detection rod assembly in the detection rod sealing anti-rotation structure of a switch machine provided by this utility model; Figure 3 A schematic diagram of the structure of the sealing anti-rotation sleeve in the detection rod sealing anti-rotation structure of a switch machine provided by this utility model; Figure 4 A schematic diagram showing the connection state between the protective pipe end sealing anti-rotation component and the bottom shell of a switch machine in a detection rod sealing anti-rotation structure provided by this utility model. Figure 5 A schematic diagram showing the connection state between the sealing assembly at the protruding end of the detection rod and the bottom shell of the switch machine in a sealing and anti-rotation structure for the detection rod of a switch machine provided by this utility model. Figure 6 This is a schematic diagram of the extended end sealing sleeve in the anti-rotation sealing structure of the detection rod of a switch machine provided by this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] See Figures 1 to 6 This utility model provides a detection rod sealing and anti-rotation structure for a switch machine, which is applied to a sealed switch machine (such as a sealed electric switch machine). It is installed on the bottom shell 1 of the switch machine and includes a detection rod assembly 3, a protective tube end sealing and anti-rotation assembly 4, and a detection rod protrusion end sealing assembly 5. The detection rod assembly 3 is horizontally installed at the front end of the bottom shell 1 of the switch machine; On the left and right sides of the bottom shell 1 of the switch machine, at positions corresponding to the left and right ends of the detection rod assembly 3, there are respectively a protective tube end sealing anti-rotation assembly 4 and a detection rod protrusion end sealing assembly 5; The left end of the detection rod assembly 3 is located inside the protective tube end sealing anti-rotation assembly 4; The detection rod assembly 3 includes two detection rods arranged in parallel to each other; The two detection rods have anti-rotation limiting parts 30 on the side facing the protective tube end sealing anti-rotation assembly 4; The anti-rotation limiting part 30 has an anti-rotation structure; The protective tube end sealing anti-rotation component 4 is used to seal and protect the left end of the detection rod assembly 3 and to constrain the position of the left end of the detection rod assembly 3, thereby reducing the flipping angle of the two detection rods. The right end of the detection rod assembly 3 passes laterally through the detection rod extension end sealing assembly 5; The sealing assembly 5 at the protruding end of the detection rod is used to seal and protect the right end of the detection rod assembly 3, ensuring the sealing performance between the bottom shell 1 of the switch machine and the right end of the detection rod assembly 3.

[0022] In this utility model, specifically, the anti-rotation limiting part 30 has an anti-rotation structure, specifically: the shape of the anti-rotation limiting part 30 is a shape with at least two edges; In this utility model, specifically, the radial cross-sectional shape of the anti-rotation limiting part 30 is a non-circular shape; In specific implementation, the radial cross-sectional shape of the anti-rotation limiting part 30 can be a triangle, a regular pentagon, a regular hexagon, a rectangle, etc., or it can be a combination of multiple irregular shapes, such as a combination of a rectangle and an isosceles trapezoid. Figure 2 As shown.

[0023] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 2 As shown, the detection rod assembly 3 includes two detection rods, one end of which has a cylindrical moving part 301 and the other end has a square anti-rotation limiting part 30.

[0024] In this utility model, specifically, the anti-rotation limiting parts 30 of the two detection rods are symmetrically distributed front and back, as shown in the figure. Figure 2 As shown.

[0025] In this invention, specifically, the maximum lateral width of the anti-rotation limiting portion 30 of the two detection rods is greater than its maximum vertical height.

[0026] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 2 As shown, the detection rod assembly 3 (i.e., the locking rod assembly) includes a first detection rod 31 and a second detection rod 32 arranged side by side; The first detection rod 31 and the second detection rod 32 pass laterally through the protective tube end sealing anti-rotation assembly 4 and the detection rod protrusion end sealing assembly 5 on the bottom shell 1 of the switch machine; The protruding ends of the first detection rod 31 and the second detection rod 32 (i.e. the protruding end rods of the detection rods) are one end of the detection rod protruding end sealing assembly 5 near the switch machine. A first notch 310 (i.e., a groove) is provided on the top of the non-extended end side of the first detection rod 31 (i.e., the end near the protective tube end sealing anti-rotation component 4). A second notch 320 (i.e., a groove) is provided on the top of the protruding end side of the second detection rod 32 (i.e., the end near the sealing assembly 5 of the protruding end of the detection rod). It should be noted that above the first gap 310 and the second gap 320, there is an original inspection post of the switch machine. When the turnout is switched to the correct position, one of the inspection posts inside the switch machine will fall into the notch of the locking rod below it.

[0027] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 3 , Figure 4 As shown, the protective pipe end sealing anti-rotation assembly 4 includes a sealing anti-rotation sleeve 400; The sealing anti-rotation sleeve 400 is sealed on the left side wall of the bottom shell 1 of the switch machine; The sealing anti-rotation sleeve 400 has anti-rotation limiting holes 4000 at positions corresponding to the anti-rotation limiting portions 30 of the two detection rods of the detection rod assembly 3 (e.g., Figure 2 (as shown in the square hole) The shape and size of the anti-rotation limiting hole 4000 of the detection rod correspond to and match the shape and size of the anti-rotation limiting part 30 of the detection rod; The end of the sealing anti-rotation sleeve 400 away from the bottom shell 1 of the switch machine is sealed with a hollow detection rod protection tube 401 (the end of the detection rod protection tube 401 facing the sealing anti-rotation sleeve 400 is open, and the rest is sealed).

[0028] It should be noted that traditional detection rods are typically square on the inside and round on the outside, with both ends being round rods. When a traditional detection rod is subjected to a turning force, it will turn to a certain extent, causing wear. This utility model changes one end of the detection rod to a square rod structure (i.e., an anti-rotation limiting part 30 in one form). The square rod end of the detection rod is used in conjunction with a rectangular hole sleeve (i.e., a protective tube end sealing anti-rotation component 4 in one form). The rectangular hole sleeve is fixed to the bottom shell of the switch machine by bolts. The turning angle of the detection rod can be reduced by controlling the dimensional tolerance of the fit.

[0029] It should be noted that, in this utility model, the anti-rotation limiting part 30 on the two detection rods of the detection rod assembly 3 cooperates with the sealing anti-rotation sleeve 400 in the protective tube end sealing anti-rotation assembly 4, which can prevent the detection rod from rotating too much, thereby reducing the angle of the detection rod flipping.

[0030] The present invention employs a sealing and anti-rotation structure for the detection rod of a switch machine. When applied to a sealed electric switch machine, it can reduce the rotation angle of the detection rod when subjected to external torsional force without reducing the overall protection level of the switch machine. This reduces the increased wear caused by the rotation of the detection rod, decreases the workload of on-site maintenance, and lowers maintenance costs.

[0031] In practice, the sealing anti-rotation sleeve 400 is sealed and fixedly connected to the left side wall of the switch machine bottom shell 1 by multiple first bolts 4001; The left side wall of the switch machine base shell 1 has a left detection rod through hole at a position corresponding to the two detection rods of the detection rod assembly 3; The through hole of the left detection rod is located inside the sealing anti-rotation sleeve 400; The sealing anti-rotation sleeve 400 is provided with a first sealing ring receiving groove distributed around the left side wall of the switch machine bottom shell 1. A first sealing ring 4002 is provided in the first sealing ring receiving groove; The detection rod through hole on the left side of the bottom shell 1 of the switch machine is located inside the first sealing ring 4002.

[0032] Furthermore, the first sealing ring 4002 is an O-ring.

[0033] Furthermore, the sealing anti-rotation sleeve 400 is sealed and fixedly connected to the left side wall of the switch machine bottom shell 1 by multiple first bolts 4001, and the specific structural design is as follows: The sealing anti-rotation sleeve 400 has multiple (e.g., four) first through holes on its upper and lower sides respectively; The left side wall of the switch machine base 1 has a first bolt mounting hole (which is an internal thread hole) at the position corresponding to each first through hole. After the first bolt 4001 passes through the first through hole on the sealing anti-rotation sleeve 400, it is threadedly fixed to the first bolt mounting hole on the left side wall of the switch machine bottom shell 1.

[0034] In specific implementation, a hollow detection rod protective tube 401 is sealed at the end of the sealing anti-rotation sleeve 400 away from the bottom shell 1 of the switch machine. The specific structural design is as follows: The protective tube 401 of the detection rod is sealed and fixedly connected to the sealing anti-rotation sleeve 400 by multiple second bolts 4011; The left end of the detection rod assembly 3 is located inside the detection rod protective tube 401; Furthermore, multiple second through holes are provided around the outer edge of the end of the detection rod protective tube 401 facing the sealing anti-rotation sleeve 400; The sealing anti-rotation sleeve 400 is provided with a second bolt mounting hole (which is an internal thread hole) at a position corresponding to each second through hole. After the second bolt 4011 passes through the second through hole on the detection rod protective tube 401, it is threadedly fixed to the second bolt mounting hole on the sealing anti-rotation sleeve 400.

[0035] Furthermore, two rubber gaskets 403 and a cover plate 404 are provided between the protective tube 401 of the detection rod and the opposite side of the sealing anti-rotation sleeve 400. The cover plate 404 is located between the two rubber pads 403; Furthermore, each rubber pad 403 and each cover plate 404 are provided with a third through hole and a fourth through hole at a position corresponding to each second bolt 4011; After the second bolt 4011 passes through the second through hole, the third through hole and the fourth through hole, it is threadedly fixed to the second bolt mounting hole on the sealing anti-rotation sleeve 400.

[0036] Furthermore, the sealing anti-rotation sleeve 400 is provided with a first dustproof felt receiving groove distributed around the side facing the detection rod protective tube 401; A circular first dustproof felt 405 is provided in the first dustproof felt receiving groove. The left side detection rod through hole, the second through hole, the third through hole and the fourth through hole of the bottom shell 1 of the switch machine are all located inside the first dustproof felt 405.

[0037] It should be noted that, for this utility model, the detection rod protective tube 401 and the sealing anti-rotation sleeve 400 adopt an end face sealing structure, which is achieved by using two rubber gaskets 403 and a cover plate 404. At the same time, a first dustproof felt 405 is arranged in the protective tube end sealing anti-rotation assembly 4 to play a dustproof role.

[0038] Furthermore, the center points of the sealing anti-rotation sleeve 400 and the detection rod protective tube 401 are located on the same transverse axis.

[0039] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 5 , Figure 6 As shown, the probe extension end sealing assembly 5 includes an extension end sealing sleeve 500; The protruding end sealing sleeve 500 is sealed on the right side wall of the bottom shell 1 of the switch machine; The protruding end sealing sleeve 500 is provided with a detection rod through hole 5000 at a position corresponding to the cylindrical moving part 301 of each detection rod in the detection rod assembly 3 (e.g., Figure 6 (as shown in the circular hole) The shape and size of the through hole 5000 of the detection rod correspond to and match the shape and size of the cylindrical moving part 301 of the detection rod; In practice, the extended end sealing sleeve 500 is sealed and fixedly connected to the right side wall of the switch machine bottom shell 1 by multiple third bolts 5001; The right side wall of the switch machine base shell 1 has right side detection rod through holes at positions corresponding to the two detection rods of the detection rod assembly 3; The through hole of the right detection rod is located inside the protruding end sealing sleeve 500; The protruding end sealing sleeve 500 is provided with a second sealing ring receiving groove distributed around it on the side facing the right side wall of the switch machine bottom shell 1; A second sealing ring 5002 is provided in the second sealing ring receiving groove; The detection rod through hole on the right side of the bottom shell 1 of the switch machine is located inside the second sealing ring 5002.

[0040] Furthermore, the second sealing ring 5002 is an O-ring.

[0041] Furthermore, the protruding end sealing sleeve 500 is sealed and fixedly connected to the right side wall of the switch machine bottom shell 1 by multiple third bolts 5001, and the specific structural design is as follows: Multiple (e.g., four) fifth through holes are provided on the upper and lower sides of the protruding end sealing sleeve 500; On the right side wall of the switch machine base 1, a fifth bolt mounting hole (which is an internal thread hole) is provided at the position corresponding to each fifth through hole. After the third bolt 5001 passes through the fifth through hole on the protruding end sealing sleeve 500, it is threadedly fixed to the fifth bolt mounting hole on the right side wall of the switch machine bottom shell 1.

[0042] In practice, each detection rod on the protruding end sealing sleeve 500 is surrounded by a second dustproof felt receiving groove, a third sealing ring, and a guide belt receiving groove on the four sides of the through hole 5000. A sealing cover plate 5003 is provided on the right end face of the protruding end sealing sleeve 500; The second dustproof felt receiving groove, the third sealing ring, and the guide belt receiving groove are distributed at intervals, and the distance between them and the sealing cover plate 5003 increases sequentially. The second dustproof felt receiving groove, the third sealing ring, and the guide belt receiving groove are respectively provided with annular second dustproof felt 5004, annular third sealing ring 5005, and annular guide belt 5006. The inner surfaces of the second dustproof felt 5004, the third sealing ring 5005, and the guide belt 5006 are in contact with the circumferential outer wall of the detection rod (e.g., the first detection rod 31 or the second detection rod 32). Furthermore, the sealing cover 5003 is provided with a circular sealing cover through hole at the position corresponding to each detection rod.

[0043] It should be noted that, in this utility model, a sealing ring and felt are provided in the sealing assembly 5 at the protruding end of the detection rod to achieve the dustproof and waterproof function of sealing the rod. At the same time, a guide belt is also provided in the sealing assembly 5 at the protruding end of the detection rod to achieve the guiding function of the rod and ensure the normal operation of the detection rod.

[0044] In this utility model, specifically, the rear end of the bottom shell 1 is also sealed with an actuating rod 6; The actuating lever 6 and the detection lever 3 are set parallel to each other.

[0045] Based on the above-mentioned anti-rotation sealing structure for the detection rod of the switch machine provided by this utility model, this utility model also provides a switch machine, which includes the aforementioned anti-rotation sealing structure for the detection rod of the switch machine, and the device housing of the switch machine. The housing of the switch machine includes the switch machine bottom shell 1 and the machine cover 2; The cover 2 is sealed at the top of the hollow switch machine bottom shell 1 with an opening at the top; In terms of specific implementation, it should be noted that the switch machine of this utility model is basically the same as the ZDJ9 switch machine produced by Tianjin Railway Signal Co., Ltd., the difference being: the addition of a sealing anti-rotation structure for the detection rod of the switch machine, and the improvement of the shape and structure of the detection rod (i.e., the locking rod).

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A sealing and anti-rotation structure for the detection rod of a switch machine, disposed on the bottom shell (1) of the switch machine, characterized in that, It includes a detection rod assembly (3), a protective tube end sealing anti-rotation assembly (4), and a detection rod protrusion end sealing assembly (5). The detection rod assembly (3) is horizontally installed at the front end of the bottom shell (1) of the switch machine; On the left and right sides of the bottom shell (1) of the switch machine, at positions corresponding to the left and right ends of the detection rod assembly (3), there are respectively a protective tube end sealing anti-rotation assembly (4) and a detection rod protrusion end sealing assembly (5). The left end of the detection rod assembly (3) is located inside the protective tube end sealing anti-rotation assembly (4); The detection rod assembly (3) includes two detection rods arranged in parallel to each other; The two detection rods have anti-rotation limiting parts (30) on the side facing the protective tube end sealing anti-rotation assembly (4); The anti-rotation limiting part (30) has an anti-rotation structure; The protective tube end sealing anti-rotation assembly (4) is used to seal and protect the left end of the detection rod assembly (3) and to constrain the position of the left end of the detection rod assembly (3). The right end of the detection rod assembly (3) passes laterally through the detection rod extension end sealing assembly (5). The probe extension sealing assembly (5) is used to seal and protect the right end of the probe assembly (3).

2. The anti-rotation sealing structure for the detection rod of the switch machine as described in claim 1, characterized in that, The anti-rotation limiting part (30) has an anti-rotation structure, specifically: the shape of the anti-rotation limiting part (30) is a shape with at least two edges; and / or The radial cross-sectional shape of the anti-rotation limiting part (30) is a non-circular shape; and / or The radial cross-sectional shape of the anti-rotation limiting part (30) is a triangle, a regular pentagon, a regular hexagon, a rectangle, or a combination of a rectangle and an isosceles trapezoid.

3. The anti-rotation sealing structure for the detection rod of the switch machine as described in claim 1, characterized in that, The detection rod assembly (3) includes a first detection rod (31) and a second detection rod (32) arranged side by side. The first detection rod (31) and the second detection rod (32) pass laterally through the protective tube end sealing anti-rotation assembly (4) and the detection rod protrusion end sealing assembly (5) on the bottom shell (1) of the switch machine. The protruding ends of the first detection rod (31) and the second detection rod (32) are one end of the detection rod protruding end sealing assembly (5) near the switch machine; The top of the non-extended end of the first detection rod (31) is provided with a first notch (310). A second notch (320) is provided on the top of the protruding end side of the second detection rod (32).

4. The anti-rotation sealing structure for the detection rod of the switch machine as described in claim 1, characterized in that, The protective tube end sealing anti-rotation assembly (4) includes a sealing anti-rotation sleeve (400). The sealing anti-rotation sleeve (400) is sealed on the left side wall of the bottom shell (1) of the switch machine; The sealing anti-rotation sleeve (400) has anti-rotation limiting holes (4000) at positions corresponding to the anti-rotation limiting portions (30) of the two detection rods of the detection rod assembly (3). The shape and size of the anti-rotation limiting hole (4000) of the detection rod correspond to and match the shape and size of the anti-rotation limiting part (30) of the detection rod; The end of the sealing anti-rotation sleeve (400) away from the bottom shell (1) of the switch machine is sealed with a hollow detection rod protection tube (401).

5. The anti-rotation sealing structure for the detection rod of the switch machine as described in claim 4, characterized in that, The sealing anti-rotation sleeve (400) is sealed and fixedly connected to the left side wall of the switch machine bottom shell (1) by multiple first bolts (4001); The left side wall of the bottom shell (1) of the switch machine has a left detection rod through hole at the position corresponding to the two detection rods of the detection rod assembly (3); The through hole of the left detection rod is located inside the sealing anti-rotation sleeve (400); The sealing anti-rotation sleeve (400) has a first sealing ring receiving groove distributed around it on the side facing the left side wall of the bottom shell (1) of the switch machine; A first sealing ring (4002) is provided in the first sealing ring receiving groove. The detection rod through hole on the left side of the bottom shell (1) of the switch machine is located inside the first sealing ring (4002).

6. The anti-rotation sealing structure for the detection rod of the switch machine as described in claim 5, characterized in that, The first sealing ring (4002) is an O-ring; The sealing anti-rotation sleeve (400) is sealed and fixedly connected to the left side wall of the switch machine bottom shell (1) by multiple first bolts (4001). The specific structural design is as follows: Multiple first through holes are provided on the upper and lower sides of the sealing anti-rotation sleeve (400); The left side wall of the bottom shell (1) of the switch machine is provided with a first bolt mounting hole at the position corresponding to each first through hole; After the first bolt (4001) passes through the first through hole on the sealing anti-rotation sleeve (400), it is threadedly fixed to the first bolt mounting hole on the left side wall of the switch machine bottom shell (1).

7. The anti-rotation sealing structure for the detection rod of a switch machine as described in any one of claims 4 to 6, characterized in that, The end of the sealing anti-rotation sleeve (400) away from the bottom shell (1) of the switch machine is sealed with a hollow detection rod protection tube (401). The specific structural design is as follows: The protective tube (401) of the detection rod is sealed and fixedly connected to the sealing anti-rotation sleeve (400) by multiple second bolts (4011); The left end of the detection rod assembly (3) is located inside the detection rod protective tube (401); The outer edge of the end of the detection rod protective tube (401) facing the sealing anti-rotation sleeve (400) is provided with multiple second through holes; The sealing anti-rotation sleeve (400) is provided with a second bolt mounting hole at a position corresponding to each second through hole; After the second bolt (4011) passes through the second through hole on the protective tube (401) of the detection rod, it is threadedly fixed to the second bolt mounting hole on the sealing anti-rotation sleeve (400); And / or, Two rubber pads (403) and a cover plate (404) are provided between the protective tube (401) of the detection rod and the opposite side of the sealing anti-rotation sleeve (400). The cover plate (404) is located between the two rubber pads (403); Each rubber gasket (403) and each cover plate (404) is provided with a third through hole and a fourth through hole at a position corresponding to each second bolt (4011); After the second bolt (4011) passes through the second through hole, the third through hole and the fourth through hole, it is threadedly fixed to the second bolt mounting hole on the sealing anti-rotation sleeve (400); The sealing anti-rotation sleeve (400) is provided with a first dustproof felt receiving groove distributed around the side facing the detection rod protective tube (401); A circular first dustproof felt (405) is provided in the first dustproof felt receiving groove. The left side detection rod through hole, the second through hole, the third through hole and the fourth through hole of the bottom shell (1) of the switch machine are all located inside the first dustproof felt (405); And / or, The center points of the sealing anti-rotation sleeve (400) and the detection rod protective tube (401) are located on the same transverse axis.

8. The anti-rotation sealing structure for the detection rod of the switch machine as described in claim 1, characterized in that, The probe extension sealing assembly (5) includes an extension sealing sleeve (500). The protruding end sealing sleeve (500) is sealed on the right side wall of the bottom shell (1) of the switch machine; The protruding end sealing sleeve (500) is provided with a detection rod through hole (5000) at a position corresponding to the cylindrical moving part (301) of each detection rod of the detection rod assembly (3). The shape and size of the through hole (5000) of the detection rod correspond to and match the shape and size of the cylindrical moving part (301) of the detection rod.

9. The anti-rotation sealing structure for the detection rod of a switch machine as described in claim 8, characterized in that, The protruding end sealing sleeve (500) is sealed and fixedly connected to the right side wall of the switch machine bottom shell (1) by multiple third bolts (5001); The right side wall of the bottom shell (1) of the switch machine has a right side detection rod through hole at the position corresponding to the two detection rods of the detection rod assembly (3); The through hole of the right detection rod is located inside the protruding end sealing sleeve (500); The protruding end sealing sleeve (500) is provided with a second sealing ring receiving groove distributed around the side facing the right side wall of the bottom shell (1) of the switch machine; A second sealing ring (5002) is provided in the second sealing ring receiving groove; The right-side detection rod through hole of the bottom shell (1) of the switch machine is located inside the second sealing ring (5002); The second sealing ring (5002) is an O-ring; The protruding end sealing sleeve (500) is sealed and fixedly connected to the right side wall of the switch machine bottom shell (1) by multiple third bolts (5001). The specific structural design is as follows: Multiple fifth through holes are provided on the upper and lower sides of the protruding end sealing sleeve (500); The right side wall of the bottom shell (1) of the switch machine has a fifth bolt mounting hole at the position corresponding to each fifth through hole; After the third bolt (5001) passes through the fifth through hole on the protruding end sealing sleeve (500), it is threadedly fixed to the fifth bolt mounting hole on the right side wall of the switch machine bottom shell (1); And / or, Each detection rod on the protruding end sealing sleeve (500) is surrounded by a second dustproof felt receiving groove, a third sealing ring and a guide belt receiving groove on the four sides of the through hole (5000); A sealing cover plate (5003) is provided on the right end face of the protruding end sealing sleeve (500). The second dustproof felt receiving groove, the third sealing ring and the guide belt receiving groove are distributed at intervals, and the distance between them and the sealing cover plate (5003) increases sequentially. The second dustproof felt receiving groove, the third sealing ring, and the guide belt receiving groove are respectively provided with annular second dustproof felt (5004), annular third sealing ring (5005), and annular guide belt (5006). The inner surfaces of the second dustproof felt (5004), the third sealing ring (5005), and the guide belt (5006) are in contact with the circumferential outer wall of the detection rod.

10. A switch machine, characterized in that, The switch includes a detection rod sealing anti-rotation structure for a switch machine as described in any one of claims 1 to 9, and a device housing for the switch machine; The housing of the switch machine includes the switch machine bottom shell (1) and the machine cover (2). The cover (2) is sealed at the top of the hollow bottom shell (1) of the switch machine, which has an opening at the top.

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