Vehicle bogie jacking device

Abstract

The invention relates to the related technical field of railway vehicle overhaul and maintenance, in particular to a vehicle bogie jacking device which comprises a sliding rail arranged on the lower side of a railway vehicle and stretching across a rail, two oppositely-distributed sliding seats are arranged on the sliding rail in a sliding mode, and hydraulic jacks used for being connected with and jacking a bogie are arranged on the sliding seats. And an adjusting unit for increasing the lifting height of the railway vehicle is arranged on the hydraulic jack. The liftable height of the hydraulic jack can be increased, on one hand, the situation that a gap at the bottom of a bogie of a railway vehicle is small, and a large-size hydraulic jack is inconvenient to install is avoided, on the other hand, the problem that the jacking height is limited due to the small-size hydraulic jack is solved, overall operation is convenient, and the cost is low. The bogie of the railway vehicle can be conveniently lifted; the situation that the bogie falls off in the jacking process is effectively avoided, stable connection between the jacking device and the bogie is kept, and the jacking device is suitable for rapidly jacking the railway vehicle bogie.

Description

Technical Field

[0001] The present invention relates to the technical field related to rail vehicle inspection and maintenance, and in particular to a vehicle bogie jacking device. Background Art

[0002] At present, for rail vehicles in use, some traction motor bearings and parts of the shock absorbing system used in rail vehicle operation need to be regularly inspected and maintained, and the inspection and maintenance process of the above-mentioned structure needs to be assisted by raising the height of the bogie with the help of a jacking device.

[0003] However, the jacking devices currently used to increase the height of the bogie have the following problems: most of the existing jacking devices are fixed. When the bogie is placed on the ground, the gap at the bottom of the bogie is small, and it is not convenient for a larger jacking device to be moved to the bottom of the bogie to lift the bogie. Although a small jacking device can be placed at the bottom of the bogie, the jacking height is limited, which makes maintenance inconvenient.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a vehicle bogie jacking device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a vehicle bogie lifting device, comprising a slide rail arranged on the lower side of a rail vehicle and crossing the rail, two relatively distributed slide seats are slidably arranged on the slide rail, a hydraulic jack for connecting and lifting the bogie is arranged on the slide seat, an adjustment unit for increasing the lifting height of the rail vehicle is arranged on the hydraulic jack, and the adjustment unit includes a fixed plate arranged on the hydraulic jack and a top block arranged on the fixed plate;

[0007] A clamping unit, arranged on the top of the top block, for clamping and fixing the bogie;

[0008] One or more cushion blocks are arranged between the fixed plate and the top block, the tops of the fixed plate and the cushion blocks are respectively provided with auxiliary splicing components, and the bottoms of the cushion blocks and the top block are respectively provided with main splicing components adapted to the auxiliary splicing components.

[0009] Furthermore, the secondary splicing assembly includes a connecting groove having an open opening and arranged on the fixing plate and the cushion block, a mounting frame arranged on the inner side wall of the connecting groove, and a slot arranged on both side walls of the connecting groove, a movable plate is arranged on the mounting frame, a first spring fixed to the inner end of the mounting frame is arranged on the inner side of the movable plate, and an inserting rod for inserting the main splicing assembly is arranged on the outer side of the movable plate.

[0010] Furthermore, the main splicing component includes a connecting block for inserting into the connecting groove, and a cavity arranged in the connecting block, a wedge block 1 is movably arranged in the cavity, wedge blocks 2 which are adapted to be connected to the slot are respectively arranged on the wedge surfaces on both sides of the wedge block 1, a second spring connected to the side of the cavity is arranged on one side of the wedge block 2, a socket adapted to the insertion rod is arranged on the inner end of the wedge block 1, and an operating handle extending to the outside is arranged on the outer end of the wedge block 1.

[0011] Furthermore, the clamping unit includes clamping plates symmetrically arranged on both sides of the top block, and a supporting plate arranged on the outside of the clamping plates and horizontally shifted from the top block, and a guide rail frame is horizontally arranged on the outside of the supporting plate.

[0012] Furthermore, screw hole side plates are symmetrically arranged on both sides of the fixing plate, and a transmission unit for driving the guide rail frame to translate is arranged on the screw hole side plates;

[0013] The transmission unit includes a telescopic rod fixed by bolts on the screw hole side plate, a screw rod arranged on the upper part of the telescopic rod and moving vertically with the hydraulic jack, a gear is rotatably arranged on the screw rod, a rack is meshed with a horizontal side of the gear, and the rack is fixed on the inner side of the guide rail frame.

[0014] Furthermore, a bottom plate is provided at the bottom of the hydraulic jack, insert blocks are symmetrically provided on both sides of the bottom plate, and a fixing stud is provided at the bottom center of the bottom plate;

[0015] The fixing stud is adapted to be fixed on the sliding seat.

[0016] Furthermore, the bottom plate is provided with an outer support ring sleeved on the outside of the plurality of cushion blocks, and the outer bottom end of the outer support ring is provided with a side frame adapted to be embedded with the insert block.

[0017] Furthermore, a fixed slot frame is vertically arranged on the outer side of the side frame, a hydraulic push rod for connecting the fixed slot frame on one side is arranged on one end of the slide rail, and a distance rod is also arranged on the slide seat;

[0018] The two ends of the distance rod are respectively fixedly connected to the corresponding fixing slot frames on both sides.

[0019] Furthermore, an opening is provided on one side of the outer support ring for placing a gasket, and a groove is also provided on the outer support ring for vertical movement of the screw hole side plate. The inner wall of the outer support ring is evenly provided with guide rails adapted to guide the movement of the gasket side.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the present invention can increase the lifting height of the hydraulic jack under the plug-in combination of the auxiliary splicing component and the main splicing component by setting the fixing plate, the cushion block and the top block, on the one hand, it can avoid the small gap at the bottom of the bogie of the rail vehicle, which makes it inconvenient to install a large hydraulic jack, and on the other hand, it solves the problem of limited lifting height caused by the small hydraulic jack. The overall operation is convenient, and it is convenient to lift the bogie of the rail vehicle, which is beneficial to the later inspection and maintenance of the bottom structure of the rail vehicle and the resetting operation of the rail vehicle on the track; the clamping unit is also set, and when the top block is lifted to the support point on the bogie, the two symmetrically distributed clamping plates on the clamping unit are used to clamp and fix the support point of the bogie, so as to avoid the bogie falling off during the jacking process, and keep the jacking device and the bogie stably connected, which is suitable for quickly jacking the bogie of the rail vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A three-dimensional structural diagram of an overall perspective of an embodiment of the present invention;

[0023] Figure 2 A three-dimensional structural diagram of a jacking structure according to an embodiment of the present invention from one viewing angle;

[0024] Figure 3 It is an exploded schematic diagram of a jacking structure according to an embodiment of the present invention;

[0025] Figure 4 A three-dimensional structural diagram of a cross section of a jacking structure according to an embodiment of the present invention;

[0026] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 A three-dimensional structural diagram of a hydraulic jack according to an embodiment of the present invention from one perspective;

[0028] Figure 7 It is a structural schematic diagram of a pairing connection between a secondary splicing component and a primary splicing component in one embodiment of the present invention;

[0029] Figure 8 A schematic cross-sectional structure diagram of a main splicing assembly from one perspective according to an embodiment of the present invention;

[0030] Fig. 9 A three-dimensional structural diagram of a hydraulic jack in another perspective of an embodiment of the present invention;

[0031] Fig.10 The figure is a three-dimensional structural diagram of a slide rail according to an embodiment of the present invention from one perspective.

[0032] In the figure: 100, slide rail; 1, slide seat; 2, hydraulic jack; 21, bottom plate; 211, insert block; 212, fixing stud; 3, fixing plate; 31, screw hole side plate; 4, cushion block; 5, top block; 6, secondary splicing assembly; 61, mounting frame; 62, shift plate; 63, first spring; 64, plug rod; 7, main splicing assembly; 71, connecting block; 72, wedge block one; 73, wedge block two; 74, second spring; 75, plug hole; 76, operating handle; 8, outer support ring; 81, side frame; 811, fixed slot frame; 9, clamping unit; 91, clamping plate; 92, support plate; 921, guide rail frame; 10, transmission unit; 101, telescopic rod; 102, gear; 103, rack; 11, hydraulic push rod; 12, distance rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] like Figure 1-10 As shown, a jacking device of the present invention is applied to a rail vehicle bogie, comprising a slide rail 100 arranged at the lower side of the rail vehicle and crossing the rail, two relatively distributed slide seats 1 are slidably arranged on the slide rail 100, a hydraulic jack 2 for connecting and jacking up the bogie is arranged on the slide seat 1, and an adjustment unit for increasing the lifting height of the rail vehicle is arranged on the hydraulic jack 2, and the adjustment unit comprises a fixing plate 3 arranged on the hydraulic jack 2 and a top block 5 arranged on the fixing plate 3;

[0037] A clamping unit 9, arranged on the top of the top block 5, for clamping and fixing the bogie;

[0038] One or more cushion blocks 4 are arranged between the fixed plate 3 and the top block 5, and auxiliary splicing components 6 are respectively arranged on the top of the fixed plate 3 and the cushion blocks 4, and main splicing components 7 adapted to the auxiliary splicing components 6 are respectively arranged on the bottom of the cushion blocks 4 and the top block 5.

[0039] In the specific implementation, firstly, a slide rail 100 is placed across the lower side of the rail vehicle to be repaired, and the corresponding hydraulic jack 2 is rotated and fixed on the two slide seats 1 relatively distributed on the slide rail 100, and then the outer support ring 8 is assembled on the bottom plate 21 welded at the bottom of the hydraulic jack 2, and then the fixing plate 3 is bolted to the end of the movable plunger of the hydraulic jack 2, and then the corresponding number of pads 4 can be stacked in sequence through the auxiliary splicing assembly 6 and the main splicing assembly 7 according to the required increase in lifting height, and the top block 5 is spliced ​​on the end face of the top pad 4, and finally the clamping unit 9 and the transmission unit 10 are assembled on the device by plugging and fixing with bolts and nuts on the top block 5;

[0040] After the two relatively distributed hydraulic jacks 2 are fixed on the slide rail 100, the hydraulic jacks 2 on one side are connected by the hydraulic push rod 11, and the two hydraulic jacks 2 are connected by the distance rod 12 (the distance between the distance rod 12 is equal to the distance between the bogies on both sides of the rail vehicle). After the assembly is completed, it can be selected to perform the inspection of the bottom of the rail vehicle or the reset of the rail vehicle according to the actual needs;

[0041] The fixing plate 3, several cushion blocks 4 and the top block 5 are sequentially stacked and assembled on the hydraulic jack 2, and the lifting height of the hydraulic jack 2 is increased under the assembly of the auxiliary splicing component 6 and the main splicing component 7. On the one hand, it can avoid the small gap at the bottom of the bogie of the rail vehicle, which makes it inconvenient to install the large hydraulic jack 2. On the other hand, it can solve the problem of limited lifting height caused by the small hydraulic jack 2. The overall operation is convenient, and it is easy to lift the bogie of the rail vehicle, which is beneficial to the later inspection and maintenance of the bottom structure of the rail vehicle and the resetting operation of the rail vehicle on the track.

[0042] In one embodiment, the auxiliary splicing assembly 6 includes an open connecting groove arranged on the fixing plate 3 and the cushion block 4, a mounting frame 61 arranged on the inner side wall of the connecting groove, and slots arranged on the two side walls of the connecting groove, a movable plate 62 is arranged on the mounting frame 61, a first spring 63 fixed to the inner end of the mounting frame 61 is arranged on the inner side of the movable plate 62, and an insertion rod 64 for plugging in the main splicing assembly 7 is arranged on the outer side of the movable plate 62. In this design, by turning open connection grooves on the fixed plate 3 and the cushion block 4, respectively, and welding the mounting frame 61 on the inner side of the connection groove, and turning the slide grooves on both sides of the outer end of the mounting frame 61, and the moving plate 62 sliding horizontally in the slide groove and the plug rod 64 welded on the outer side of the moving plate 62, when the main splicing component 7 is plugged in the connection groove, the plug rod 64 will push the structure inside the main splicing component 7 to fix the main splicing component 7 in the groove of the connection groove, thereby realizing the splicing and assembly between the fixed plate 3, the cushion block 4 and two adjacent superimposed cushion blocks 4, and the cushion block 4 and the top block 5;

[0043] Furthermore, by means of the first spring 63 welded on the inner side of the moving plate 62 and fixed to the inner end of the mounting frame 61, when disassembling, the operating handle 76 included on the main splicing component 7 can be operated to drive the insertion rod 64 and the moving plate 62 to translate inward under the elastic support of the first spring 63, so that the main splicing component 7 spliced ​​in the connecting groove is separated, which is convenient for overall installation and disassembly and easy to operate;

[0044] Slots are machined through the two side walls of the connecting groove, providing a channel for the wedge block 73 to be adapted and inserted, thereby achieving a fixing effect.

[0045] In one embodiment, the main splicing component 7 includes a connecting block 71 for inserting into the connecting groove, a cavity arranged in the connecting block 71, a wedge block 72 is movably arranged in the cavity, wedge blocks 73 73 adapted to be connected to the slot are respectively arranged on both sides of the wedge surfaces of the wedge block 72, a second spring 74 connected to the side of the cavity is arranged on one side of the wedge block 73, a socket 75 adapted to the insertion rod 64 is arranged on the inner end of the wedge block 72, and an operating handle 76 extending to the outside is arranged on the outer end of the wedge block 72. In this design, through the cavity left by turning in the connection block 71, the wedge block 1 72 installed horizontally phase-shifted in the cavity, and the wedge block 2 73 with wedge surfaces on both sides of the wedge block 1 72, when the plug hole 75 turned on one side of the wedge block 1 72 is adapted and plugged into the plug rod 64, the horizontal force generated will drive the wedge block 1 72 to move outward. At this time, the structure of the wedge surface can transmit the force to drive the wedge blocks 2 73 on both sides to move in the vertical direction of horizontal outward movement, thereby achieving the fixation of the main splicing component 7 in the connection groove;

[0046] When the operating handle 76 that runs horizontally through the connecting block 71 is operated, the wedge block 1 72 welded on one end of the operating handle 76 will be pushed to restore to its initial position, and under the elastic support force of the second spring 74, the wedge block 2 73 will be translated in the opposite direction to its initial state, effectively completing the splitting of the main splicing component 7 in the connecting groove.

[0047] In one embodiment, the clamping unit 9 includes clamping plates 91 symmetrically arranged on both sides of the top block 5, a supporting plate 92 arranged on the outside of the clamping plates 91 and horizontally shifted from the top block 5, and a guide rail frame 921 is horizontally arranged on the outside of the supporting plate 92. With this design, the two clamping plates 91 installed on the top block 5 and the supporting plate 92 welded on the lower surface of the clamping plates 91 and horizontally shifted from the upper surface of the top block 5 can drive the two clamping plates 91 installed thereon to clamp and fix the supporting points of the bogie under the action of external force, thereby realizing rapid jacking and fixing, avoiding the bogie from falling off during the jacking process, maintaining a stable connection between the jacking device and the bogie, and being suitable for rapid jacking of rail vehicle bogies.

[0048] It should be noted that a protective rubber pad is bonded to the inner end surface of the clamping plate 91 .

[0049] In one embodiment, screw hole side plates 31 are symmetrically arranged on both sides of the fixing plate 3, and a transmission unit 10 for driving the guide rail frame 921 to translate is arranged on the screw hole side plates 31;

[0050] The transmission unit 10 includes a telescopic rod 101 bolted to the screw hole side plate 31, a screw rod arranged on the upper part of the telescopic rod 101 and moving vertically with the hydraulic jack 2, a gear 102 is rotatably arranged on the screw rod, a rack 103 is meshed with a horizontal side of the gear 102, and the rack 103 is fixed to the inner side of the guide rail frame 921. With this design, through the screw hole side plates 31 symmetrically welded on both sides of the fixing plate 3 and the telescopic rod 101 fixed on the screw hole side plates 31 using nuts and screws, the fixing plate 3 fixed on the hydraulic jack 2 and the telescopic rod 101 connected to the fixing plate 3 through the screw hole side plates 31 can be driven to move upward synchronously during the lifting process of the hydraulic jack 2. At this time, the screw rod welded on the top of the telescopic rod 101 and the gear 102 installed on the screw rod for threaded rotation are combined into a similar spiral transmission structure, which realizes that the force is transmitted to drive the gear 102 to rotate while the screw rod moves upward, and under the transmission of the rack 103 fixed to one side of the inner side of the guide frame 921 that meshes with the side of the gear 102, the support plate 92 and the clamping plate 91 connected to the guide frame 921 are driven to move inward synchronously, so as to fix and clamp the support point of the bogie and operate following the upward movement of the hydraulic jack 2.

[0051] It should be noted that the two clamping plates 91 installed on the top block 5 for relative translation will reserve a space with the center point, so as to ensure that the two clamping plates 91 can be accurately and stably clamped and fixed with the center point of the bogie during the lifting process.

[0052] In one embodiment, a bottom plate 21 is provided at the bottom of the hydraulic jack 2, and inserts 211 are symmetrically provided on both sides of the bottom plate 21, and a fixing stud 212 is provided at the bottom center of the bottom plate 21;

[0053] The fixing stud 212 is adapted to be fixed on the slide 1. With this design, a limiting structure of the combined outer support ring 8 is provided through the bottom plate 21 fixed by bolts at the bottom of the hydraulic jack 2 and the inserts 211 symmetrically welded on both sides of the bottom plate 21, which facilitates the installation of the outer support ring 8 on the hydraulic jack 2;

[0054] The combined hydraulic jack 2 can be rotated on the slide seat 1 by using a fixing stud 212 welded at the bottom center of the base plate 21, thereby achieving convenient installation and improving the convenience of assembly.

[0055] In one embodiment, the bottom plate 21 is provided with an outer support ring 8 sleeved on the outside of the plurality of cushion blocks 4, and the outer bottom end of the outer support ring 8 is provided with a side frame 81 adapted to be embedded in the insert block 211. In this design, the plurality of cushion blocks 4 are effectively limited by the outer support ring 8 sleeved on the outside of the plurality of cushion blocks 4 stacked together, and the upward movement of the plurality of cushion blocks 4 is stably supported;

[0056] The two outer support rings 8 symmetrically welded at the bottom outer ends of the outer support rings 8 are adapted to be plugged into the inserts 211 for easy assembly.

[0057] In one embodiment, a fixed slot frame 811 is vertically arranged on the outer side of the side frame 81, a hydraulic push rod 11 is arranged on one end of the slide rail 100 for connecting to the fixed slot frame 811 on one side, and a distance rod 12 is also arranged on the slide seat 1;

[0058] The two ends of the distance rod 12 are respectively fixedly connected to the corresponding fixed slot frames 811 on both sides. With this design, the fixed slot frame 811 vertically welded on the outside of the side frame 81 can be fixedly spliced ​​with the hydraulic push rod 11 installed on one side of the slide rail 100, and the distance rod 12 installed on the slide rail 100 is used to fix and splice the two relatively distributed fixed slot frames 811, so that the fixed assembly of the two hydraulic jacks 2 on the slide rail 100 is realized. When performing lifting and maintenance operations, it is only necessary to connect the hydraulic control unit to the hydraulic jack 2 to work, and when resetting the rail vehicle, the hydraulic push rod 11 is first lifted and then operated, so that the hydraulic jack 2 connected below the rail vehicle bogie is translated on the slide seat 1, and the operation is simple.

[0059] It should be noted that the distance rod 12 adopts a supporting guide rod with a bidirectional telescopic structure.

[0060] In one embodiment, an opening is provided on one side of the outer support ring 8 for placing the cushion block 4, and a slot is also provided on the outer support ring 8 for the vertical movement of the screw hole side plate 31. The inner wall of the outer support ring 8 is evenly provided with guide rails adapted to guide the movement of the side of the cushion block 4. In this design, through the opening machined on one side of the outer support ring 8, the operating positions of the cushion blocks 4 for splicing operations are directly opposite to the opening, so that the cushion blocks 4 can be conveniently stacked and placed in the outer support ring 8;

[0061] The grooves are symmetrically turned on both sides of the outer support ring 8, which match the moving path of the screw hole side plate 31, so that the fixed plate 3 installed at the end of the movable plunger on the hydraulic jack 2 and the multiple pads 4 spliced ​​and stacked on the fixed plate 3 can move vertically smoothly.

[0062] The guide rails are evenly welded on the inner wall of the outer support ring 8, and the guide rail grooves are machined on the outer surface of the pad 4 to adapt to the guide rails. During the process of moving several stacked pads 4, the guide rails and the guide rail grooves are adaptively connected, which can produce an external support guiding effect on several spliced ​​and stacked pads 4, thereby providing a stable rising effect.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A vehicle bogie lifting device, comprising a slide rail (100) arranged on the lower side of a rail vehicle and crossing the track, two slide seats (1) arranged slidably on the slide rail (100) and arranged opposite to each other, and a hydraulic jack (2) for connecting and lifting the bogie is arranged on the slide seat (1), characterized in that: The hydraulic jack (2) is provided with an adjustment unit for increasing the lifting height of the rail vehicle, and the adjustment unit comprises a fixing plate (3) arranged on the hydraulic jack (2) and a top block (5) arranged on the fixing plate (3); A clamping unit (9), arranged on the top of the top block (5), and used for clamping and fixing the bogie; One or more cushion blocks (4) are arranged between the fixed plate (3) and the top block (5); auxiliary splicing components (6) are arranged on the top of the fixed plate (3) and the cushion blocks (4); and main splicing components (7) adapted to the auxiliary splicing components (6) are arranged on the bottom of the cushion blocks (4) and the top block (5).

2. A vehicle bogie lifting device according to claim 1, characterized in that: The secondary splicing assembly (6) comprises an open connection groove arranged on the fixing plate (3) and the cushion block (4), a mounting frame (61) arranged on the inner side wall of the connection groove, and slots arranged on the two side walls of the connection groove, a shift plate (62) is arranged on the mounting frame (61), a first spring (63) fixed to the inner end of the mounting frame (61) is arranged on the inner side of the shift plate (62), and an insertion rod (64) for inserting the primary splicing assembly (7) is arranged on the outer side of the shift plate (62).

3. A vehicle bogie lifting device according to claim 2, characterized in that: The main splicing component (7) includes a connecting block (71) for inserting into the connecting groove, and a cavity arranged in the connecting block (71), wherein a wedge block 1 (72) is movably arranged in the cavity, and wedge blocks 2 (73) are respectively arranged on both sides of the wedge surfaces of the wedge block 1 (72) and are adapted to be connected with the slot, and a second spring (74) connected to the side of the cavity is arranged on one side of the wedge block 2 (73), and a socket (75) adapted to the insertion rod (64) is arranged on the inner end of the wedge block 1 (72), and an operating handle (76) extending to the outside is arranged on the outer end of the wedge block 1 (72).

4. The vehicle bogie lifting device according to claim 1, characterized in that: The clamping unit (9) comprises clamping plates (91) symmetrically arranged on both sides of the top block (5), a supporting plate (92) arranged outside the clamping plates (91) and horizontally displaced from the top block (5), and a guide rail frame (921) is horizontally arranged outside the supporting plate (92).

5. The vehicle bogie lifting device according to claim 4, characterized in that: The fixing plate (3) is symmetrically provided with screw hole side plates (31) on both sides, and the screw hole side plates (31) are provided with a transmission unit (10) for driving the guide rail frame (921) to translate; The transmission unit (10) comprises a telescopic rod (101) fixed by bolts on the screw hole side plate (31), a screw rod arranged on the upper part of the telescopic rod (101) and moving vertically with the hydraulic jack (2), a gear (102) rotatably arranged on the screw rod, a rack (103) meshing on a horizontal side of the gear (102), and the rack (103) fixed on the inner side of the guide rail frame (921).

6. The vehicle bogie lifting device according to claim 5, characterized in that: A bottom plate (21) is provided at the bottom of the hydraulic jack (2), insert blocks (211) are symmetrically provided on both sides of the bottom plate (21), and a fixing stud (212) is provided at the bottom center of the bottom plate (21); The fixing stud (212) is adapted to be fixed on the sliding seat (1).

7. The vehicle bogie lifting device according to claim 6, characterized in that: The bottom plate (21) is provided with an outer support ring (8) sleeved on the outside of the plurality of cushion blocks (4), and the outer bottom end of the outer support ring (8) is provided with a side frame (81) adapted to be embedded in the insert block (211).

8. The vehicle bogie lifting device according to claim 7, characterized in that: A fixed slot frame (811) is vertically arranged on the outer side of the side frame (81), a hydraulic push rod (11) for connecting to the fixed slot frame (811) on one side is arranged on one end of the slide rail (100), and a distance rod (12) is also arranged on the slide seat (1); The two ends of the distance rod (12) are respectively fixedly connected to the corresponding fixed slot frames (811) on both sides.

9. The vehicle bogie lifting device according to claim 7, characterized in that: An opening is provided on one side of the outer support ring (8) for accommodating the cushion block (4), and a slot is also provided on the outer support ring (8) for vertical movement of the screw hole side plate (31). The inner wall of the outer support ring (8) is evenly provided with guide rails adapted to guide the movement of the side of the cushion block (4).

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