Narrow-space nylon sleeve taking-out device for high-speed motor train unit

Abstract

The utility model discloses a nylon sleeve taking-out device for a narrow space of a high-speed motor train unit. The nylon sleeve taking-out device comprises a tensioning mechanism and a taking-out device, the tensioning mechanism comprises four tensioning split bodies, the ends, extending into the circular cavity of the apron board, of the tensioning split bodies are provided with head portions, and rod portions are connected with the head portions. The heads of the four tensioning split bodies form a petal body which is attached to the end of the nylon sleeve. The rod part extends out of the circular cavity of the apron board; the extractor is provided with a transverse ejection structure matched with the corresponding rod part, the rod part is pushed through the transverse ejection structure, and the nylon sleeve is pushed to move transversely through the petal body. According to the nylon sleeve taking-out device, the tensioning mechanism is embedded into the circular cavity of the apron board, the petal bodies are attached to the end faces of the nylon sleeves, and then the transverse ejection structure is used for pushing the rod parts outside the petal bodies to drive one nylon sleeve to move, so that the problem that later coating protection is difficult due to the fact that the nylon sleeves are not detached is solved; and the possibility of even replacement and necessary replacement of the nylon sleeve in a narrow space is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of high - speed EMU advanced overhaul, in particular to a device for removing nylon sleeves in a narrow space of a high - speed EMU. Background Technique

[0002] The bogie skirt board of some CR400BF EMUs has a nylon sleeve structure. The nylon sleeve is a cylindrical structure with flanges at both ends and is inserted into the circular cavity of the skirt board. Due to years of vehicle operation, dust and other impurities enter between the nylon sleeve and the inner surface of the circular cavity of the skirt board, resulting in difficult disassembly of the nylon sleeve during advanced overhaul. For places with sufficient space, a cylinder with the same diameter as the tail of the nylon sleeve can be used to strike the tail of the nylon sleeve to knock out the nylon sleeve. For places with insufficient space, such as nylon sleeves installed bidirectionally, the method of knocking cannot be used to remove the nylon sleeve. For the skirt board with the nylon sleeve that cannot be disassembled, the current temporary treatment plan is not to disassemble the nylon sleeve, and after the vehicle maintenance is completed, the un - disassembled nylon sleeve leaves the factory with the vehicle.

[0003] Therefore, based on the above - mentioned technical problems, those skilled in the art urgently need to develop a device for removing nylon sleeves in a narrow space of a high - speed EMU. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for removing nylon sleeves in a narrow space of a high - speed EMU. This nylon - sleeve removal device effectively solves the problem of the inability to disassemble nylon sleeves in a narrow space and can avoid the problem of difficult protection in the subsequent skirt - board painting process due to the un - disassembled nylon sleeve.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for removing nylon sleeves in a narrow space of a high - speed EMU according to the utility model, the nylon - sleeve removal device includes:

[0007] A tensioning mechanism capable of extending into the circular cavity of the skirt board with nylon sleeves installed at both ends; and an extractor cooperating with the tensioning mechanism;

[0008] The tensioning mechanism includes four tensioning sub - bodies. One end of the tensioning sub - body extending into the circular cavity of the skirt board has a head, and a rod part is connected to the head;

[0009] The heads of the four tensioning sub - bodies form a petal body, and the petal body abuts against the end of the nylon sleeve;

[0010] The rod part extends to the outside of the circular cavity of the skirt board;

[0011] The extractor has a lateral ejection structure that cooperates with the corresponding rod portion to push the rod portion through the lateral ejection structure and push the nylon sleeve to move laterally through the petal body.

[0012] Furthermore, the head of the tensioning split body is configured as an arc structure;

[0013] One end of the rod portion of the tensioning split body is connected to the head, and the other end extends horizontally. The cross-section of the rod portion is an arc structure, and an arc-shaped groove is formed inside the rod portion;

[0014] The rod portions of two adjacent tensioning split bodies are close to each other and form a semi-circular groove that can accommodate a raised rod or a non-raised rod.

[0015] Furthermore, the heads of two of the tensioning split bodies extend into the inner part of the circular cavity of the skirt plate from one side of one of the nylon sleeves, and the heads of the other two tensioning split bodies extend into the inner part of the circular cavity of the skirt plate from one side of the other nylon sleeve;

[0016] All four heads are located in the gap between the two nylon sleeves and form the petal body.

[0017] Furthermore, the extractor includes:

[0018] An extractor base, the extractor base is a cuboid structure, and the inside is a part-taking space;

[0019] A fixing structure for the circular cavity of the skirt plate located at one end of the extractor base; and the lateral ejection structure integrated at the other end of the extractor base;

[0020] The circular cavity of the skirt plate with two nylon sleeves installed is embedded in the part-taking space and is close to the side of the fixing structure for the circular cavity of the skirt plate. The fixing structure for the circular cavity of the skirt plate fixes and restricts the movement of the circular cavity of the skirt plate;

[0021] The lateral ejection structure contacts the rod portion close to it and drives the internal petal body to move by pushing the rod portion and push the corresponding nylon sleeve out of the circular cavity of the skirt plate along the axial direction of the nylon sleeve.

[0022] Furthermore, the fixing structure for the circular cavity of the skirt plate includes:

[0023] A sliding seat provided on the extractor base, a smooth rod is provided at the upper end of the sliding seat; and two fixing blocks slidably connected to the sliding seat;

[0024] The lower part of the fixed block is a wedge body with a groove, and the grooves of the two wedge bodies are used to clamp and fix the circular cavity of the skirt plate. The end of the extractor base is hollowed out, and the nylon sleeve extends partially to the outside of the extractor base through the hollowed-out position and is clamped and fixed by the two wedge bodies;

[0025] The sliding seat has a chute, and the position where the wedge body cooperates with the chute has a sliding protrusion slidably connected in the chute.

[0026] Furthermore, the upper part of the fixed block is a threaded sleeve, and a sleeve is arranged at one end of the threaded sleeve that cooperates with the optical bar;

[0027] A positive and negative lead screw is threadedly connected in the two threaded sleeves, and the positive and negative lead screw is threadedly connected to the two threaded sleeves through the threads with different spiral directions at its two ends to drive the two threaded sleeves to move in different directions;

[0028] The two sleeves are sleeved on the optical bar.

[0029] Furthermore, the lateral ejection structure includes:

[0030] A lead screw threadedly connected to the extractor base;

[0031] A rolling component arranged at the end of the lead screw; and a first bushing connected to the lead screw through the rolling component and cooperating with the corresponding rod part;

[0032] The rolling component includes:

[0033] A loose disk, a tight disk, and a rolling disk located between the loose disk and the tight disk;

[0034] A second bushing is arranged at one end of the rolling component that cooperates with the lead screw;

[0035] One end of the first bushing is embedded in the rolling component and connected to the second bushing, and the other end of the second bushing abuts against the lead screw.

[0036] Furthermore, two limiting protrusions are arranged in the extractor base;

[0037] One end of the circular cavity of the skirt plate is clamped and fixed through the circular cavity fixing structure of the skirt plate, and the other end of the circular cavity of the skirt plate is limited by the limiting protrusion close to it;

[0038] The second bushing is limited by another limiting protrusion.

[0039] In the above technical solution, a nylon sleeve extraction device for a narrow space of a high-speed EMU provided by the present utility model has the following beneficial effects:

[0040] The nylon sleeve removal device of the present utility model is embedded into the circular cavity of the skirt board through a tensioning mechanism, and the petal body is used to lean against the end face of the nylon sleeve. Then, the extractor is used to push the rod part outside the petal body to drive the movement of one of the nylon sleeves. This device can realize the disassembly of nylon sleeves in narrow spaces, meet the requirements of comprehensive cleaning of the skirt board, avoid the problem of difficult later painting and protection caused by the failure to remove the nylon sleeve, and realize the possibility of occasional and necessary replacement of nylon sleeves in narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a structural schematic diagram of the tensioning and splitting of a nylon sleeve removal device for narrow spaces of high-speed EMUs disclosed in an embodiment of the present utility model;

[0043] Figure 2 It is a structural schematic diagram of the combination of the tensioning mechanism of a nylon sleeve removal device for narrow spaces of high-speed EMUs and its cooperation with the nylon sleeve disclosed in an embodiment of the present utility model;

[0044] Figure 3 It is a structural schematic diagram of the tensioning mechanism of a nylon sleeve removal device for narrow spaces of high-speed EMUs disclosed in an embodiment of the present utility model;

[0045] Figure 4 It is a structural schematic diagram of the raised rod of a nylon sleeve removal device for narrow spaces of high-speed EMUs disclosed in an embodiment of the present utility model;

[0046] Figure 5 It is a structural schematic diagram of the non-raised rod of a nylon sleeve removal device for narrow spaces of high-speed EMUs disclosed in an embodiment of the present utility model;

[0047] Figure 6 It is a structural schematic diagram of the working state of the tensioning mechanism of a nylon sleeve removal device for narrow spaces of high-speed EMUs disclosed in an embodiment of the present utility model;

[0048] Figure 7 It is a schematic diagram of the internal gap of the circular cavity of the skirt board of a nylon sleeve removal device for narrow spaces of high-speed EMUs being divided into three spaces;

[0049] Figure 8 It is a cross-sectional dimension relationship diagram of the head and the rod of a nylon sleeve removal device for narrow spaces of high-speed EMUs disclosed in an embodiment of the present utility model;

[0050] Figure 9 Schematic structural diagram of the extractor of a nylon sleeve extraction device for a narrow space of a high - speed multiple unit disclosed in an embodiment of the present utility model;

[0051] Figure 10 Exploded view of the structure of the extractor of a nylon sleeve extraction device for a narrow space of a high - speed multiple unit disclosed in an embodiment of the present utility model.

[0052] Description of reference numerals:

[0053] 100, nylon sleeve; 200, circular cavity of the skirt board;

[0054] 210, first space; 220, second space; 230, third space;

[0055] 10, tensioning mechanism; 20, extractor;

[0056] 11, petal body;

[0057] 101, head; 102, rod part; 103, protruding rod; 104, non - protruding rod;

[0058] 3, extractor base; 4, fixing structure for the circular cavity of the skirt board; 5, transverse ejection structure;

[0059] 301, limiting protrusion;

[0060] 401, sliding seat; 402, optical bar; 403, positive and negative lead screw; 404, threaded sleeve; 405, sleeve; 406, wedge - shaped body; 407, groove; 408, chute; 409, sliding protrusion;

[0061] 501, lead screw; 502, first bushing; 503, second bushing; 504, tightening disc; 505, loosening disc; 506, rolling disc. Detailed implementation manners

[0062] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0063] See Figures 1 to 10 as shown;

[0064] A nylon sleeve extraction device for a narrow space of a high - speed multiple unit in this embodiment, the nylon sleeve extraction device includes:

[0065] A tensioning mechanism 10 that can extend into the circular cavity 200 of the skirt board where nylon sleeves 100 are installed at both ends; and an extractor 20 that cooperates with the tensioning mechanism 10;

[0066] See Figures 1 to 8As shown, the tensioning mechanism 10 includes four tensioning sub - units 1. One end of the tensioning sub - unit 1 extending into the circular cavity 200 of the skirt plate has a head 101, and a rod portion 102 is connected to the head 101;

[0067] The heads 101 of the four tensioning sub - units 1 form a petal - shaped body 11, and the petal - shaped body 11 abuts against the end of the nylon sleeve 100;

[0068] The rod portion 102 extends to the outside of the circular cavity 200 of the skirt plate;

[0069] The extractor 20 has a lateral ejection structure 5 that cooperates with the corresponding rod portion 102 to push the rod portion 102 through the lateral ejection structure 5 and push the nylon sleeve 100 to move laterally through the petal - shaped body 11.

[0070] Specifically, this embodiment discloses a nylon sleeve extraction device suitable for extracting a nylon sleeve 100 that is bidirectionally installed in the circular cavity of the skirt plate in a narrow space. This extraction device is divided into two mechanisms, namely, a tensioning mechanism 10 and an extractor 20 that cooperates with the tensioning mechanism 10.

[0071] The tensioning mechanism 10 of this embodiment is divided into four tensioning sub - units 1. The head 101 of each tensioning sub - unit 1 can independently extend from the inside of the nylon sleeve 100 and into the circular cavity 200 of the skirt plate. After sequential insertion, the four heads 101 approach each other and combine to form a petal - shaped body 11. The petal - shaped body 11 can abut against the end of the nylon sleeve 100 and is located in the gap between the two nylon sleeves 100. Thus, with the thrust of the external extractor 20, one of the distal nylon sleeves 100 can be pushed out.

[0072] The nylon sleeve extraction device disclosed in this embodiment solves the problem that the nylon sleeve 100 cannot be disassembled in a narrow space. After the nylon sleeve 100 is disassembled, the inner surface of the circular cavity 200 of the skirt plate can be cleaned of dust, the problem of difficult protection in the subsequent skirt plate painting process caused by the non - disassembly of the nylon sleeve 100 can be avoided, the problem that the surface of the non - disassembled nylon sleeve 100 is accidentally damaged and needs to be updated but cannot be disassembled can be avoided, and the problem that the nylon sleeve 100 in the fifth - level repair cannot be disassembled because it must be replaced is solved, improving the maintenance quality.

[0073] Preferably, the head 101 of the tensioning sub - unit 1 of this embodiment is configured as an arc - shaped structure;

[0074] One end of the rod portion 102 of the tensioning sub - unit 1 is connected to the head 101, and the other end extends horizontally. The cross - section of the rod portion 102 is an arc - shaped structure, and an arc - shaped groove is formed inside the rod portion 102;

[0075] The rod portions 102 of two adjacent tensioning sub - units 1 approach each other and form a semi - circular groove that can accommodate a raised rod 103 or a non - raised rod 104.

[0076] The heads 101 of two of the tensioning segments 1 extend from one side of one of the nylon sleeves 100 into the interior of the circular cavity 200 of the skirt plate, and the heads 101 of the other two tensioning segments 1 extend from one side of the other nylon sleeve 100 into the interior of the circular cavity 200 of the skirt plate;

[0077] The four heads 101 are all located within the gap between the two nylon sleeves 100 and form a petal body 11.

[0078] In this embodiment, the heads 101 of the four tensioning segments 1 of the tensioning mechanism 10 need to sequentially extend from inside the corresponding nylon sleeves 100 into the circular cavity 200 of the skirt plate, and are re - combined into a petal body 11 by rotating a certain angle inside, and the petal body 11 is used to abut against the end of the nylon sleeve 100.

[0079] The specific method of placing the petal body 11 inside is as follows: First, the thickness of the head 101 of the tensioning segment 1 in this embodiment is 3 mm. In this application, the gap between the two nylon sleeves 100 (the axial width of the gap is 10 mm) is evenly divided into three parts along the axis, namely the first space 210, the second space 220, and the third space 230. See Figure 5 As shown, that is, the widths of the first space 210, the second space 220, and the third space 230 are all slightly larger than the thickness of the head 101, which enables the head 101 to stay and rotate in the above - mentioned three spaces. The head 101 of the first tensioning segment 1 is inserted from the right - hand nylon sleeve 100. When the head 101 is in the third space 230, the tensioning segment 1 is rotated, and the rod part 102 then clings to the inner surface of the nylon sleeve 100. The head 101 of the second tensioning segment 1 is also inserted from the right - hand nylon sleeve 100. When the head 101 is in the second space 220, the head 101 is rotated and the head 101 of the second tensioning segment 1 is retracted into the third space 230 and abuts against the head 101 of the first tensioning segment 1, and a non - protruding rod 104 is inserted to fix the two heads 101; Subsequently, the other two heads 101 of the tensioning segments 1 are inserted from the left - hand nylon sleeve 100 in the same way using the first space 210 and the second space 220, and a protruding rod 103 is inserted to fix the other two heads 101. Since the head 101 of the petal body 11 and the protruding part of the protruding rod 103 have a fillet with a radius of 1 mm, the four heads 101 can be easily made to abut against the end face of the nylon sleeve 100. After the assembly is completed, the nylon sleeve 100 is removed using the extractor 20.

[0080] See Figure 8 As shown, Figure 8 shows the relationship diagram of the cross - sectional dimensions of the head 101 and the rod part 102 of this application; the inner diameter of the nylon sleeve 100 in this embodiment is 10 mm, and the outer diameter of the nylon sleeve 100 and the inner diameter of the circular cavity 200 of the skirt plate are both 18 mm. According to Figure 8The head 101 and the rod 102 designed with cross-sectional dimensions can ensure that the first tensioning split body can smoothly extend into the nylon sleeve 100 without interfering with the inner surface of the nylon sleeve 100. After the head 101 of the first tensioning split body fits against the end of the nylon sleeve 100 and the rod 102 fits against the inner surface of the nylon sleeve 100, the second tensioning split body is inserted. The second tensioning split body will not interfere with the rod 102 of the first tensioning split body. When the second tensioning split body rotates, its head 101 will not interfere with the inner surface of the circular cavity 200 of the skirt plate, and its rod 102 will not interfere with the rod of the first tensioning split body, and it can rotate freely, thus realizing that the two tensioning split bodies can smoothly extend into the same nylon sleeve 100. In this embodiment, the outer diameter of the petal body 11 is equal to the outer diameter of the nylon sleeve 100, both being 18 mm, realizing that on the premise that the tensioning split body can smoothly extend into the nylon sleeve 100, the contact area between the petal body 11 and the end of the nylon sleeve 100 is maximized. When the pressure is the same, the larger the contact area, the greater the pressure. By increasing the contact area, the pushing effect of the petal body 11 can be maximized.

[0081] See Figures 9 to 10 As shown, preferably, the extractor 20 of this embodiment includes:

[0082] The extractor base 3, the extractor base 3 is a cuboid structure, and the inside is a part-taking space;

[0083] The circular cavity fixing structure 4 of the skirt plate located at one end of the extractor base 3; and the lateral ejection structure 5 integrated at the other end of the extractor base 3;

[0084] The circular cavity 200 of the skirt plate with two nylon sleeves 100 installed is embedded in the part-taking space and close to the side of the circular cavity fixing structure 4 of the skirt plate. The circular cavity fixing structure 4 of the skirt plate fixes and restricts the movement of the circular cavity 200 of the skirt plate;

[0085] The lateral ejection structure 5 contacts the rod 102 close to it and drives the internal petal body 11 to move by pushing the rod 102 and axially pushes the corresponding nylon sleeve 100 out of the circular cavity 200 of the skirt plate along the nylon sleeve 100.

[0086] Among them, the circular cavity fixing structure 4 of the skirt plate of this embodiment includes:

[0087] The sliding seat 401 arranged on the extractor base 3, the upper end of the sliding seat 401 is provided with a smooth rod 402; and two fixing blocks slidably connected to the sliding seat 401;

[0088] The lower part of the fixed block is a wedge-shaped body 406 with a groove. The grooves 407 of the two wedge-shaped bodies 406 are inserted between the flanging of the nylon sleeve 100 and the circular cavity 200 of the skirt plate to clamp and fix the circular cavity 200 of the skirt plate. The end of the extractor base 3 is hollowed out. The nylon sleeve 100 extends partially to the outside of the extractor base 3 through the hollowed-out position and is clamped and fixed by the two wedge-shaped bodies 406;

[0089] The sliding seat 401 has a chute 408, and at the position where the wedge-shaped body 406 cooperates with the chute 408, there is a sliding protrusion 409 slidably connected in the chute 408.

[0090] The upper part of the fixed block in this embodiment is a threaded sleeve 404, and a sleeve 405 is provided at one end where the threaded sleeve 404 cooperates with the optical bar 402;

[0091] A reverse lead screw 403 is threadedly connected inside the two threaded sleeves 404, and the reverse lead screw 403 is threadedly connected to the two threaded sleeves 404 through the threads with different helical directions at its two ends to drive the two threaded sleeves 404 to move in different directions;

[0092] The two sleeves 405 are sleeved on the optical bar 402.

[0093] Preferably, the lateral ejection structure 5 in this embodiment includes:

[0094] A lead screw 501 threadedly connected to the extractor base 3;

[0095] A rolling assembly provided at the end of the lead screw 501; and a first bushing 502 connected to the lead screw 501 through the rolling assembly and cooperating with the corresponding rod part 102;

[0096] The rolling assembly includes:

[0097] A loose disk 505, a tight disk 504, and a rolling disk 506 located between the loose disk 505 and the tight disk 504;

[0098] A second bushing 503 is provided at one end where the rolling assembly cooperates with the lead screw 501;

[0099] One end of the first bushing 502 is embedded in the rolling assembly and connected to the second bushing 503, and the other end of the second bushing 503 abuts against the lead screw 501.

[0100] Two limit protrusions 301 are provided inside the extractor base 3;

[0101] One end of the circular cavity 200 of the skirt plate is clamped and fixed by the skirt plate circular cavity fixing structure 4, and the other end of the circular cavity 200 of the skirt plate is limited by the limit protrusion 301 close to it;

[0102] The second bushing 503 is limited by another limit protrusion 301.

[0103] The present utility model discloses a method for using a nylon sleeve extractor in a narrow space of a high-speed EMU. The method for extracting the nylon sleeve by using the narrow-space nylon sleeve extractor mainly includes the following steps:

[0104] S1. First, sequentially insert the heads 101 of the two tensioning split bodies 1 into the circular cavity 200 of the skirt board from one side of one nylon sleeve 100. Secondly, sequentially insert the heads 101 of the other two tensioning split bodies 1 into the circular cavity 200 of the skirt board from the other side of the other nylon sleeve 100. After rotating a certain angle, form a petal body 11 that can cooperate with the end of the nylon sleeve 100 with the four heads 101, and install the protruding rod 103 and the non-protruding rod 104.

[0105] S2. Use the extractor 20 to extract the nylon sleeve 100.

[0106] Further, the specific steps for the extractor 20 to extract the nylon sleeve 100 are as follows:

[0107] S201. Insert the forward and reverse lead screw 403 into the threaded sleeves 404 of the two fixing blocks, and rotate the forward and reverse lead screw 403 to make the two fixing blocks approach each other.

[0108] S202. Insert the first bushing 502, the second bushing 503 and the rolling component into one end of the rod portion 102.

[0109] S203. Use the forward and reverse lead screw 403 to drive the two fixing blocks to clamp and fix one end of the circular cavity 200 of the skirt board. At this time, the other end of the circular cavity 200 of the skirt board is stuck at the limit protrusion 301.

[0110] S204. Rotate the lead screw 501 and drive the first bushing 502 to push the rod portion 102 and push out one nylon sleeve 100 at a distance, completing the extraction operation of one nylon sleeve 100.

[0111] In the above technical solution, a nylon sleeve extractor for a narrow space of a high-speed EMU provided by the present utility model has the following beneficial effects:

[0112] The nylon sleeve extraction device of the present utility model is embedded into the circular cavity 200 of the skirt board through the tensioning mechanism 10, and the petal body 11 is abutted against the end face of the nylon sleeve 100. Then, the extractor 20 is used to push the rod portion 102 outside the petal body 11 to drive the movement of one nylon sleeve 100. This device can realize the disassembly of the nylon sleeve 100 in a narrow space, meet the requirement of comprehensive cleaning of the skirt board, avoid the problem of difficult later painting and protection caused by the failure to remove the nylon sleeve 100, and realize the possibility of occasional replacement and mandatory replacement of the nylon sleeve 100 in a narrow space.

[0113] The thrust roller bearing used in the nylon sleeve extraction device of the present utility model is suitable for occasions with large axial forces. Since there are gaps between the first bushing 502, the second bushing 503, and the lead screw 501 after assembly, it can be realized that the first bushing 502 and the petal body 11 do not rotate during the pushing process, and only the second bushing 503 and the lead screw 501 rotate, avoiding the wear of the nylon sleeve 100 caused by rotation. Moreover, there are plug-in relationships between the end of the petal body 11, the first bushing 502, and the lead screw 501, avoiding the bending deformation and damage caused by non-concentric axes during the pushing process.

[0114] The limit protrusion 301 in the extractor base 3 of the present utility model can not only hold the edge of the nylon sleeve 100 in place, positioning it for the wedge-shaped body 406 of the left and right fixing blocks to be inserted into the gap between the flanging of the nylon sleeve 100 and the circular cavity 200 of the skirt plate, avoiding damage to the nylon sleeve 100 and the circular cavity 200 of the skirt plate by the wedge-shaped body 406, but also hold the second bushing 503 to ensure the correct installation positions of the bearing tightening disc 504, loosening disc 505, and rolling disc 506, avoiding damage to the rolling disc 506 caused by the rolling disc 506 falling off when the lead screw 501 is rotated.

[0115] Only some exemplary embodiments of the present utility model have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A device for removing nylon sleeves in narrow spaces of high-speed train sets, characterized in that: The nylon sleeve removal device comprises: A tensioning mechanism (10) capable of extending into a circular cavity (200) of a skirt plate with nylon sleeves (100) installed at both ends; and A take-out device (20) cooperating with the tensioning mechanism (10); The tensioning mechanism (10) comprises four tensioning sub-bodies (1), and one end of the tensioning sub-bodies (1) extending into the circular cavity (200) of the skirt plate has a head (101), and a rod (102) is connected to the head (101); The heads (101) of the four tensioning parts (1) form a petal body (11), and the petal body (11) is in contact with the end of the nylon sleeve (100); The rod portion (102) extends to the outside of the circular cavity (200) of the skirt plate; The extractor (20) has a transverse ejection structure (5) that cooperates with the corresponding rod (102) so as to push the rod (102) through the transverse ejection structure (5) and push the nylon sleeve (100) to move laterally through the petal body (11).

2. The device for removing nylon sleeves in narrow spaces of high-speed train sets according to claim 1 is characterized in that: The head (101) of the tensioning split body (1) is configured as an arc-shaped structure; One end of the rod portion (102) of the tensioning split body (1) is connected to the head portion (101), and the other end extends horizontally, and the cross section of the rod portion (102) is an arc-shaped structure, and an arc-shaped groove is formed inside the rod portion (102); The rods (102) of two adjacent tensioning parts (1) are close to each other and form a semicircular groove capable of accommodating a raised rod (103) or a non-raised rod (104).

3. The device for removing nylon sleeves in narrow spaces of high-speed train sets according to claim 2 is characterized in that: The heads (101) of two of the tensioning parts (1) extend from one side of the nylon sleeve (100) into the circular cavity (200) of the skirt plate, and the heads (101) of the other two tensioning parts (1) extend from another side of the nylon sleeve (100) into the circular cavity (200) of the skirt plate; The four heads (101) are all located in the gap between the two nylon sleeves (100) and constitute the petal body (11).

4. A high-speed train narrow space nylon sleeve removal device according to any one of claims 1 to 3, characterized in that: The extractor (20) comprises: The extractor base (3) is a rectangular parallelepiped structure, and the interior of the extractor base (3) is a space for extracting items; a skirt plate circular cavity fixing structure (4) located at one end of the extractor base (3); and a lateral ejection structure (5) integrated at the other end of the extractor base (3); The skirt plate circular cavity (200) equipped with two nylon sleeves (100) is embedded in the pickup space and close to one side of the skirt plate circular cavity fixing structure (4), and the skirt plate circular cavity fixing structure (4) fixes and restricts the movement of the skirt plate circular cavity (200); The lateral ejection structure (5) contacts the rod portion (102) adjacent thereto, and by pushing the rod portion (102), drives the petal body (11) inside to move and pushes the corresponding nylon sleeve (100) axially along the nylon sleeve (100) to move out of the circular cavity (200) of the skirt plate.

5. The device for removing nylon sleeves in narrow spaces of high-speed train sets according to claim 4 is characterized in that: The skirt plate circular cavity fixing structure (4) comprises: A sliding seat (401) is arranged on the extractor base (3), and a light bar (402) is arranged on the upper end of the sliding seat (401); and Two fixed blocks slidably connected to the sliding seat (401); The lower part of the fixing block is a wedge-shaped body (406) having a groove (407), and the grooves (407) of the two wedge-shaped bodies (406) are inserted between the flange of the nylon sleeve (100) and the circular cavity (200) of the skirt plate to clamp and fix the circular cavity (200) of the skirt plate, and the end of the extractor base (3) is hollowed out, and the nylon sleeve (100) extends to the outside of the extractor base (3) through the hollowed-out part, and the circular cavity (200) of the skirt plate is clamped and fixed by the two wedge-shaped bodies (406); The sliding seat (401) has a sliding groove (408), and the position where the wedge-shaped body (406) cooperates with the sliding groove (408) has a sliding protrusion (409) slidably connected to the sliding groove (408).

6. The device for removing nylon sleeves in narrow spaces of high-speed train sets according to claim 5 is characterized in that: The upper part of the fixing block is a threaded sleeve (404), and one end of the threaded sleeve (404) that cooperates with the optical rod (402) is provided with a sleeve (405); The two threaded sleeves (404) are internally threadedly connected to a forward and reverse lead screw (403), and the forward and reverse lead screw (403) is threadedly connected to the two threaded sleeves (404) through threads with different spiral directions at both ends thereof, so as to drive the two threaded sleeves (404) to move in different directions; The two sleeves (405) are sleeved on the optical bar (402).

7. The device for removing nylon sleeves in narrow spaces of high-speed train sets according to claim 5, characterized in that: The lateral ejection structure (5) comprises: A lead screw (501) threadedly connected to the extractor base (3); A rolling assembly disposed at the end of the lead screw (501); and a first bushing (502) connected to the lead screw (501) via the rolling assembly and matched with a corresponding rod portion (102); The rolling assembly comprises: A loose plate (505), a tight plate (504), and a rolling plate (506) located between the loose plate (505) and the tight plate (504); A second bushing (503) is provided at one end of the rolling assembly that cooperates with the lead screw (501); One end of the first bushing (502) is embedded in the rolling assembly and connected to the second bushing (503), and the other end of the second bushing (503) abuts against the lead screw (501).

8. The device for removing nylon sleeves in narrow spaces of high-speed train sets according to claim 7, characterized in that: Two limiting protrusions (301) are arranged inside the extractor base (3); One end of the skirt plate circular cavity (200) is clamped and fixed by the skirt plate circular cavity fixing structure (4), and the other end of the skirt plate circular cavity (200) is limited by the limiting protrusion (301) close thereto; The second bushing (503) is limited by another limiting protrusion (301).

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