Positioning node assembling platform

Abstract

The utility model provides a positioning node assembling platform, which belongs to the technical field of railway vehicles and comprises a working frame, two node supporting seats, two bearing seats, axle box mounting seats and two pressure applying mechanisms, the node supporting seats are mounted on the working frame and detachably connected with the working frame, mounting grooves are formed in the node supporting seats, and the bearing seats are detachably connected with the axle box mounting seats. The node supporting seat is in sliding fit connection with the working frame; the bearing seats are mounted on the working frame, and the two bearing seats are located on the two sides of the two joint supporting seats correspondingly; the arrangement direction of the two bearing seats is perpendicular to the arrangement direction of the two node supporting seats. The axle box installation base is installed on the working frame and located between one bearing base and the joint supporting base. The pressure applying mechanism is mounted on the two bearing seats; and the free ends of the two pressure applying mechanisms respectively act on the axle box and the cover plate. According to the positioning node assembling platform, it is ensured that the cover plate, the positioning node and the axle box are stably and effectively installed, and the axle box can stably work and be used.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail vehicles, and more specifically, relates to a positioning node assembly platform. Background Art

[0002] One end of the swing arm axle box on the rail vehicle is connected to the swing arm seat on the frame through a rubber positioning node, which enables the axle box to achieve lateral, vertical and circumferential buffering and displacement. At present, when installing the positioning node, due to the elasticity of the positioning node itself, the cover plate needs to squeeze the positioning node to deform, and use multiple bolts to fix the cover plate and the axle box; however, under the action of the elastic restoring force of the positioning node, it is difficult to accurately and effectively install the cover plate and the positioning node on the axle box, resulting in failure of the positioning node installation and the axle box cannot be used normally. Utility Model Content

[0003] The utility model aims to provide a positioning node assembly platform to solve the technical problem in the prior art that the cover plate and the positioning node installation are prone to failure, resulting in the axle box being unable to be used normally.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a positioning node assembly platform, including:

[0005] Work rack;

[0006] There are two node support seats, both of which are installed on the work frame and are detachably connected to the work frame; the node support seat is provided with a mounting groove for installing the positioning node; the two node support seats are arranged at intervals, and a squeezing space is formed between the two node support seats; the two node support seats are both connected to the work frame in a sliding manner, and the sliding direction of the node support seat is consistent with the arrangement direction of the two node support seats;

[0007] There are two bearing seats, both of which are installed on the work frame; the two bearing seats are arranged at intervals and are respectively located on both sides of the two node support seats; the arrangement direction of the two bearing seats is perpendicular to the arrangement direction of the two node support seats;

[0008] An axle box mounting seat, mounted on the work frame and located between one of the bearing seats and the node support seat;

[0009] There are two pressure-applying mechanisms, which are respectively installed on the two bearing seats; the free ends of the two pressure-applying mechanisms act on the axle box and the cover plate respectively.

[0010] In a possible implementation, an inner wall of the mounting groove is provided with a positioning inclined surface for mounting the positioning node.

[0011] In a possible implementation manner, a threaded hole for fixing and installing the positioning node is formed on the bottom surface of the installation groove.

[0012] In a possible implementation, the work frame is provided with two groups of mounting holes corresponding to the two node support seats respectively; the node support seat comprises:

[0013] A first bottom plate, used for being mounted on the work frame; the first bottom plate is provided with a long hole corresponding to the mounting hole;

[0014] A vertical plate is fixedly mounted on the first bottom plate; the mounting groove is opened at the upper end of the vertical plate and passes through the vertical plate;

[0015] A fastener is inserted into the elongated hole and the mounting hole and is used for fixing the first base plate on the working frame.

[0016] In a possible implementation, the work frame is provided with two long slide grooves corresponding one to one with the two node support seats; the length direction of the long slide groove is consistent with the arrangement direction of the two node support seats, and the lower end surface of the first base plate is provided with a slider that slides with the corresponding long slide groove.

[0017] In a possible implementation, the pressure mechanism is a hydraulic cylinder, a cylinder rod of the hydraulic cylinder is provided with a cushion block, and the cushion block is provided with a matching surface that matches the outer side surface of the axle box or the cover plate.

[0018] In a possible implementation, the pressure mechanism near the axle box mounting seat is a horizontal fixed rod, one end of which is fixedly connected to the bearing seat, and the other end is used to abut against the axle box; the pressure mechanism near the node support seat is a hydraulic cylinder, and the cylinder rod of the hydraulic cylinder is provided with a pad, and the pad is provided with a mating surface that matches the outer side surface of the cover plate.

[0019] In one possible implementation, a limiting hole is provided on the working frame, and the axle box mounting seat includes a supporting sleeve and a limiting sleeve installed at the lower end of the supporting sleeve, the limiting sleeve is installed in cooperation with the limiting hole, and the outer diameter of the supporting sleeve is larger than the outer diameter of the limiting sleeve; the interior of the supporting sleeve and the limiting sleeve is used to accommodate the protrusion on the axle box.

[0020] In one possible implementation, the positioning node assembly platform also includes a positioning mechanism installed on one side of the node support seat, and the positioning mechanism is located between the axle box mounting seat and the node support seat; the positioning mechanism includes a first support end for supporting the lower end surface of the axle box and two second support ends respectively located on both sides of the axle box and acting horizontally on the outer side surface of the axle box.

[0021] In a possible implementation, the positioning mechanism includes:

[0022] A second bottom plate is fixedly mounted on the work frame; a screw hole is provided on the second bottom plate, and a through hole is provided on the work frame coaxially with the screw hole;

[0023] Side plates, two in number, respectively installed on both sides of the second bottom plate; the two side plates are respectively used to be installed on both sides of the axle box;

[0024] Two linear actuators are installed on adjacent sides of the two side plates respectively; the free ends of the two linear actuators are the two second support ends;

[0025] A locking bolt is inserted into the through hole from bottom to top and is threadedly connected to the screw hole; a support plate is provided at the upper end of the locking bolt, and the upper end surface of the support plate is the first support end;

[0026] The locking nut is located below the working frame and is threadedly connected to the locking bolt.

[0027] The beneficial effects of the positioning node assembly platform provided by the utility model are as follows: compared with the prior art, the positioning node assembly platform of the utility model, when in use, firstly installs two positioning node support frames, a bearing seat and a bearing mounting seat on the mounting frame, and a pressure mechanism is installed on the two bearing seats, and the positions of the two node support frames are slidably adjusted according to the size of the installed positioning node; the axle box is installed above the working frame and fixed on the axle box mounting seat; one end of the axle box is located between the two positioning node support frames; then the positioning node is installed between the two node support seats, and the two ends are respectively installed in the mounting grooves on the two node support seats, and the middle position of the positioning node is located in one end of the axle box; the cover plate is docked on one end of the axle box and corresponds to the positioning node; two pressure mechanisms are started, one pressure mechanism acts on the end face of the axle box away from the positioning node, and the free end of the other pressure mechanism is located in the extrusion space and acts on the cover plate, the axle box is stabilized and does not move by virtue of the mutual force of the two pressure mechanisms, and the other pressure mechanism effectively presses the positioning node to deform and overcomes the elastic restoring force of the positioning node, so that the cover plate and the axle box are tightly fixed together, and are locked and fixed with bolts, etc., to ensure that the cover plate, the positioning node and the axle box are firmly and effectively installed, and the axle box can work and be used stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A cross-sectional view of a positioning node assembly platform provided by an embodiment of the utility model;

[0030] Figure 2 A top view of a positioning node assembly platform provided by an embodiment of the utility model;

[0031] Figure 3 A schematic diagram of the use status of the positioning node assembly platform provided by an embodiment of the utility model;

[0032] Figure 4 A schematic diagram of the structure of a node support seat provided by an embodiment of the utility model;

[0033] Figure 5 A schematic diagram of the structure of the upper end surface of the working frame provided by the embodiment of the utility model;

[0034] Figure 6 A schematic diagram of the structure of a positioning node assembly platform with a positioning mechanism provided in an embodiment of the utility model;

[0035] Figure 7 A schematic diagram of the connection between the positioning mechanism and the workbench provided in the embodiment of the utility model;

[0036] Figure 8 A top view of the positioning mechanism provided in an embodiment of the utility model.

[0037] Among them, the reference numerals in the figure are:

[0038] 1. Work frame; 11. Long slide groove; 12. Limit hole; 13. Through hole; 14. Mounting hole; 2. Node support seat; 21. Mounting groove; 22. Extrusion space; 23. Positioning inclined surface; 24. Threaded hole; 25. First base plate; 26. Long hole; 27. Vertical plate; 28. Fastener; 29. ​​Slider; 3. Bearing seat; 4. Axle box mounting seat; 41. Support sleeve; 42. Limit sleeve; 5. Pressure mechanism; 51. Pad; 52. Matching surface; 6. Positioning mechanism; 61. Second base plate; 62. Screw hole; 63. Side plate; 64. Linear drive; 65. Locking bolt; 66. Support plate; 67. Locking nut; 7. Axle box; 71. Cover plate. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] See also Figures 1 to 5 , the positioning node assembly platform provided by the utility model is now described. A positioning node assembly platform comprises a working frame 1, a node support seat 2, a bearing seat 3, an axle box mounting seat 4 and a pressure mechanism 5, wherein the number of the node support seats 2 is two, both of which are installed on the working frame 1 and are detachably connected to the working frame 1; the node support seats 2 are provided with a mounting groove 21 for installing the positioning node; the two node support seats 2 are arranged at intervals, and an extrusion space 22 is formed between the two node support seats 2; the two node support seats 2 are both connected to the working frame 1 in a sliding manner, and the sliding direction of the node support seats 2 is consistent with the arrangement direction of the two node support seats 2; the number of the bearing seats 3 is two, both of which are installed on the working frame 1; the two bearing seats 3 are arranged at intervals, and are respectively located on both sides of the two node support seats 2; the arrangement direction of the two bearing seats 3 is perpendicular to the arrangement direction of the two node support seats 2; the axle box mounting seat 4 is installed on the working frame 1, and is located between a bearing seat 3 and the node support seat 2; the number of the pressure mechanism 5 is two, which are respectively installed on the two bearing seats 3; the free ends of the two pressure mechanisms 5 act on the axle box 7 and the cover plate 71 respectively.

[0044] Compared with the prior art, the positioning node assembly platform provided by the utility model is as follows: when in use, firstly, two positioning node support frames, a bearing seat 3 and a bearing mounting seat are installed on the mounting frame, and a pressure mechanism 5 is installed on the two bearing seats 3, and the positions of the two node support frames are slidably adjusted according to the size of the installed positioning node; the axle box 7 is installed above the working frame 1 and fixed on the axle box mounting seat 4; one end of the axle box 7 is located between the two positioning node support frames; then, the positioning node is installed between the two node support seats 2, and the two ends are respectively installed in the mounting grooves 21 on the two node support seats 2, and the middle position of the positioning node is located in one end of the axle box 7; the cover plate 71 is docked On one end of the axle box 7 and corresponding to the positioning node; start the two pressure mechanisms 5, one pressure mechanism 5 acts on the end face of the axle box 7 away from the positioning node, and the free end of the other pressure mechanism 5 is located in the extrusion space 22 and acts on the cover plate 71. The axle box 7 is stabilized and does not move by virtue of the mutual force of the two pressure mechanisms 5, and the other pressure mechanism 5 effectively presses the positioning node to deform and overcomes the elastic restoring force of the positioning node, so that the cover plate 71 and the axle box 7 are tightly fixed together, and are locked and fixed with bolts, etc., to ensure that the cover plate 71, the positioning node and the axle box 7 are firmly and effectively installed, and the axle box 7 can work and be used stably.

[0045] See also Figures 1 to 4 As a specific implementation of the positioning node assembly platform provided by the utility model, a positioning inclined surface 23 for installing the positioning node is provided on the inner wall of the installation groove 21; the positioning node installed in the installation groove 21 is accurately installed with the help of the positioning inclined surface 23, thereby ensuring that the positioning node is firmly fixed on the axle box 7 using the cover plate 71.

[0046] See also Figures 1 to 4 As a specific implementation of the positioning node assembly platform provided by the utility model, a threaded hole 24 for fixing the positioning node is opened on the bottom surface of the installation groove 21; after the two ends of the positioning node are respectively installed in the two installation grooves 21, the connecting hole on the positioning node is aligned with the threaded hole 24, and then a screw or the like is used to pass through the connecting hole and connect with the threaded hole 24.

[0047] See also Figures 1 to 5As a specific embodiment of the positioning node assembly platform provided by the utility model, the work frame 1 is provided with two groups of mounting holes 14 corresponding to the two node support seats 2; the node support seat 2 includes a first bottom plate 25, a vertical plate 27 and a fastener 28; the first bottom plate 25 is used to be installed on the work frame 1; the first bottom plate 25 is provided with a long hole 26 corresponding to the mounting hole 14; the vertical plate 27 is fixedly installed on the first bottom plate 25; the mounting groove 21 is opened at the upper end of the vertical plate 27 and passes through the vertical plate 27; the fastener 28 is penetrated through the long strip The hole 26 and the mounting hole 14 are used to fix the first base plate 25 on the work frame 1; when the first base plate 25 is installed on the work frame 1, the lower end surface of the first base plate 25 is connected to the upper end surface of the work frame 1, and the long hole 26 corresponds to the mounting hole 14. When it is necessary to adjust the distance between the two node support seats 2, the first base plate 25 is operated to move the cabinet along the length direction of the long hole 26, and the long hole 26 and the mounting hole 14 are always corresponding while changing the position of the first base plate 25. Then, fasteners 28 are used to pass through the long holes 26 and the mounting holes 14 for fixing. The vertical plate 27 is fixedly installed on the first base plate 25, and the mounting groove 21 is located at the upper end of the vertical plate 27, which is convenient for installation, positioning and power connection. The fasteners 28 are bolts and nuts.

[0048] See also Figures 1 to 5 As a specific implementation of the positioning node assembly platform provided by the utility model, the work frame 1 is provided with two long slide grooves 11 corresponding to the two node support seats 2 one by one; the length direction of the long slide groove 11 is consistent with the arrangement direction of the two node support seats 2, and the lower end surface of the first bottom plate 25 is provided with a slider 29 that slides with the corresponding long slide groove 11; when the first bottom plate 25 is moved to adjust the position of the node support seat 2, the slider 29 is connected with the long slide groove 11 with the help of the matching connection, so that the movement process of the node support seat 2 is more accurate and smooth; ensure that the mounting hole 14 corresponds to the long hole 26.

[0049] See also Figures 1 to 3 As a specific embodiment of the positioning node assembly platform provided by the utility model, the pressure mechanism 5 is a hydraulic cylinder, the cylinder rod of the hydraulic cylinder is provided with a cushion block 51, and the cushion block 51 is provided with a matching surface 52 adapted to the outer side of the axle box 7 or the cover plate 71; the hydraulic cylinder is used as the pressure mechanism 5, the force is large, so that the extrusion limit fixing effect of the axle box 7 is better; the cushion block 51 is installed on the cylinder rod of the hydraulic cylinder, and the contact area between the hydraulic cylinder and the axle box 7 is increased; at the same time, the end of the cushion block 51 close to the axle box 7 is set as a matching surface 52 adapted to the outer side of the axle box 7, so that the axle box 7 and the cover plate 71 are stably and firmly stressed. The matching surface 52 is an arc surface, etc.

[0050] See also Figures 1 to 3As a specific embodiment of the positioning node assembly platform provided by the utility model, the pressure mechanism 5 near the axle box mounting seat 4 is a horizontal fixed rod, one end of which is fixedly connected to the bearing seat 3, and the other end is used to abut against the axle box 7; the pressure mechanism 5 near the node support seat 2 is a hydraulic cylinder, and the cylinder rod of the hydraulic cylinder is provided with a cushion block 51, and the cushion block 51 is provided with a matching surface 52 adapted to the outer side of the cover plate 71; the horizontal fixed rod is fixedly mounted on the bearing seat 3, and one end extends toward the other bearing seat 3; after the axle box 7 is mounted on the axle box mounting seat 4, the side of the axle box 7 away from the positioning node directly abuts against the other end of the horizontal fixed rod, thereby realizing the positioning of the axle box 7 at that position without special adjustment. The other pressure mechanism 5 is a hydraulic cylinder, which stably applies pressure to the cover plate 71 with the help of the hydraulic cylinder and the cushion block 51.

[0051] See also Figures 1 to 3 , Figure 5 As a specific embodiment of the positioning node assembly platform provided by the utility model, a limiting hole 12 is provided on the work frame 1, and the axle box mounting seat 4 includes a support sleeve 41 and a limiting sleeve 42 installed at the lower end of the support sleeve 41. The limiting sleeve 42 is installed in cooperation with the limiting hole 12, and the outer diameter of the support sleeve 41 is larger than the outer diameter of the limiting sleeve 42; the inside of the support sleeve 41 and the limiting sleeve 42 is used to accommodate the protrusion on the axle box 7; the limiting sleeve 42 is installed in cooperation with the limiting hole 12, so that the support sleeve 41 is firmly installed on the work frame 1, and the height of the support sleeve 41 makes the installation of the axle box 7 stable and horizontal. Since the support sleeve 41 and the limiting sleeve 42 are both hollow structures, the protrusion on the outer surface of the axle box 7 enters the hollow structure, and the installation is more stable.

[0052] See also Figures 6 to 8 As a specific embodiment of the positioning node assembly platform provided by the utility model, the positioning node assembly platform also includes a positioning mechanism 6 installed on one side of the node support seat 2, and the positioning mechanism 6 is located between the axle box mounting seat 4 and the node support seat 2; the positioning mechanism 6 includes a first supporting end for supporting the lower end surface of the axle box 7 and two second supporting ends respectively located on both sides of the axle box 7 and acting horizontally on the outer side surface of the axle box 7; that is, one end of the axle box 7 is installed on the axle box mounting seat 4, and the axle box 7 is located above the positioning mechanism 6 as a whole; the lower end surface of the axle box 7 abuts against the first supporting end, and the two second supporting ends are respectively on both sides of the axle box 7 and act horizontally on the two side surfaces of the axle box 7, so that the installation and positioning of the axle box 7 is stable and accurate, ensuring the smooth installation of the positioning node.

[0053] See also Figures 6 to 8As a specific implementation of the positioning node assembly platform provided by the utility model, the positioning mechanism 6 includes a second base plate 61, a side plate 63, a linear drive 64, a locking bolt 65 and a locking nut 67; the second base plate 61 is fixedly installed on the work frame 1; a screw hole 62 is provided on the second base plate 61, and a through hole 13 coaxially arranged with the screw hole 62 is provided on the work frame 1; the number of side plates 63 is two, which are respectively installed on both sides of the second base plate 61; the two side plates 63 are respectively used to be installed on both sides of the axle box 7; the number of linear drives 64 is two, which are respectively installed on the side surfaces close to the two side plates 63; the free ends of the two linear drives 64 are two second support ends; the locking bolt 65 is penetrated from bottom to top in the through hole 13, and is screwed with the screw hole 62 The upper end of the locking bolt 65 is provided with a support plate 66, and the upper end surface of the support plate 66 is the first support end; the locking nut 67 is located below the work frame 1 and is threadedly connected to the locking bolt 65; the second bottom plate 61 is fixedly installed on the work frame 1, and the two side plates 63 are respectively installed on both sides of the first bottom plate 25, and the space between the two side plates 63 is used to accommodate the axle box 7; the locking bolt 65 is screwed to adjust the height position of the support plate 66 at the upper end of the locking bolt 65, so that the axle box 7 is consistent in height direction, and the locking nut 67 is used to fix the locking bolt 65 to the work frame 1; then start the two linear actuators 64, and their free ends are respectively pressed against the outer surface of the axle box 7 on both sides of the axle box 7 to realize the horizontal positioning of the axle box 7. The linear actuator 64 adopts a cylinder or the like.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning node assembly platform, characterized in that: include: Work rack; There are two node support seats, both of which are installed on the work frame and are detachably connected to the work frame; the node support seat is provided with a mounting groove for installing the positioning node; the two node support seats are arranged at intervals, and a squeezing space is formed between the two node support seats; the two node support seats are both connected to the work frame in a sliding manner, and the sliding direction of the node support seat is consistent with the arrangement direction of the two node support seats; Two bearing seats are installed on the working frame; The two bearing seats are arranged at intervals and are respectively located on both sides of the two node support seats; the arrangement direction of the two bearing seats is perpendicular to the arrangement direction of the two node support seats; An axle box mounting seat, mounted on the work frame and located between one of the bearing seats and the node support seat; There are two pressure-applying mechanisms, which are respectively installed on the two bearing seats; the free ends of the two pressure-applying mechanisms act on the axle box and the cover plate respectively.

2. The positioning node assembly platform according to claim 1, characterized in that: The inner wall of the installation groove is provided with a positioning inclined surface for installing the positioning node.

3. The positioning node assembly platform according to claim 2, characterized in that: The bottom surface of the installation groove is provided with a threaded hole for fixing and installing the positioning node.

4. The positioning node assembly platform according to claim 1, characterized in that: The work frame is provided with two groups of mounting holes corresponding to the two node support seats respectively; the node support seat comprises: A first bottom plate, used for being mounted on the work frame; the first bottom plate is provided with a long hole corresponding to the mounting hole; A vertical plate is fixedly mounted on the first bottom plate; the mounting groove is opened at the upper end of the vertical plate and passes through the vertical plate; A fastener is inserted into the elongated hole and the mounting hole and is used for fixing the first base plate on the working frame.

5. The positioning node assembly platform according to claim 4, characterized in that: The work frame is provided with two long slide grooves corresponding to the two node support seats one by one; the length direction of the long slide groove is consistent with the arrangement direction of the two node support seats, and the lower end surface of the first base plate is provided with a sliding block that slides with the corresponding long slide groove.

6. The positioning node assembly platform according to claim 1, characterized in that: The pressure mechanism is a hydraulic cylinder, a cylinder rod of the hydraulic cylinder is provided with a cushion block, and the cushion block is provided with a matching surface that matches the outer side surface of the axle box or the cover plate.

7. The positioning node assembly platform according to claim 1, characterized in that: The pressure mechanism close to the axle box mounting seat is a horizontal fixing rod, one end of which is fixedly connected to the bearing seat, and the other end is used to abut against the axle box; the pressure mechanism close to the node support seat is a hydraulic cylinder, and the cylinder rod of the hydraulic cylinder is provided with a pad, and the pad is provided with a mating surface that matches the outer side surface of the cover plate.

8. The positioning node assembly platform according to claim 1, characterized in that: The working frame is provided with a limiting hole, and the axle box mounting seat includes a supporting sleeve and a limiting sleeve installed at the lower end of the supporting sleeve, the limiting sleeve is installed in cooperation with the limiting hole, and the outer diameter of the supporting sleeve is larger than the outer diameter of the limiting sleeve; the interior of the supporting sleeve and the limiting sleeve is used to accommodate the protrusion on the axle box.

9. The positioning node assembly platform according to any one of claims 1 to 8, characterized in that: The positioning node assembly platform also includes a positioning mechanism installed on one side of the node support seat, and the positioning mechanism is located between the axle box mounting seat and the node support seat; the positioning mechanism includes a first support end for supporting the lower end surface of the axle box and two second support ends respectively located on both sides of the axle box and acting horizontally on the outer side surface of the axle box.

10. The positioning node assembly platform according to claim 9, characterized in that: The positioning mechanism comprises: A second bottom plate is fixedly mounted on the work frame; a screw hole is provided on the second bottom plate, and a through hole is provided on the work frame coaxially with the screw hole; Side plates, two in number, respectively installed on both sides of the second bottom plate; the two side plates are respectively used to be installed on both sides of the axle box; Two linear actuators are installed on adjacent sides of the two side plates respectively; the free ends of the two linear actuators are the two second support ends; A locking bolt is inserted into the through hole from bottom to top and is threadedly connected to the screw hole; a support plate is provided at the upper end of the locking bolt, and the upper end surface of the support plate is the first support end; The locking nut is located below the working frame and is threadedly connected to the locking bolt.

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