Climbing platform for maintenance of head train of motor train unit

Abstract

The elevating platform comprises a base, walking wheels are arranged at the four corners of the bottom of the base, a crawling ladder is vertically arranged at the rear end of the base, and a working platform is arranged at the top of the crawling ladder; the two sides of the middle of the lower portion of the base are each provided with an auxiliary wheel, and the auxiliary wheels are used for assisting the four walking wheels below the base to cross the overhaul ditch. At least one set of first fixing assembly is arranged at the front end above the base, and the first fixing assembly can be lifted and used for being supported and fixed to the bottom of a steel rail. The two walking wheels at the front end of the base are assisted by the two auxiliary wheels to cross a maintenance ditch, so that the climbing platform is prevented from toppling over due to suspension of the two walking wheels at the front end of the base, and the mounting efficiency of the climbing platform is improved; the front end of the base is fixed through the two first fixing assemblies, the tail end of the base is fixed through the second fixing assembly, it is guaranteed that the elevating platform does not move, meanwhile, the shaking amplitude of the work platform is relieved, and maintenance safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor train unit maintenance technical field especially relates to a motor train unit head car maintenance climbing platform. BACKGROUND

[0002] The motor train unit head electric wiper, headlamp, marker light and front window glass are important components of the motor train unit, and the air resistance accounts for more than 80% of all resistance during the running of the motor train unit, so the working performance of the motor train unit head electric wiper, headlamp, marker light and front window glass has high requirements. The motor train unit head accessories are used in high and low temperature and other severe weather conditions all the year round, and especially large objects such as high-speed impact birds can cause irreversible damage to the head accessories, and if the front window glass has cracks or the electric wiper, headlamp and marker light cannot work normally, it will cause serious driving safety hazards. Therefore, the motor train unit head electric wiper, headlamp, marker light and front window glass need to be maintained in combination with first and second level maintenance and spring and autumn season maintenance.

[0003] In order to reduce air resistance, the car head adopts a streamlined arc design, which causes great difficulty in maintaining the motor train unit head components, and the maintenance personnel have difficulty standing, and the operation safety is not high. Moreover, when larger car head components need to be replaced, the motor train unit needs to be dispatched to the temporary maintenance warehouse to complete the maintenance, which affects the maintenance efficiency of the motor train unit.

[0004] In the existing head car maintenance device, a motor train unit head car maintenance platform device is disclosed in Chinese utility model patent No. CN201620775026.8, which comprises a support platform, a lifting mechanism, a climbing ladder and a work platform. The lifting mechanism comprises a first stand, a second stand and a hydraulic mechanism. The lower end of the first stand is fixed on the support platform. The lower end of the second stand is movably connected with the first stand, and the upper end of the second stand is fixed on the bottom of the work platform. The hydraulic mechanism is connected with the second stand and the support platform respectively, and the hydraulic mechanism can drive the second stand to slide up and down relative to the first stand. The upper end of the climbing ladder is rotatably connected to the bottom of the work platform, and the overall length of the climbing ladder is greater than the maximum height formed by the first stand and the second stand. The platform still has the following defects: 1. In order to facilitate the maintenance of the motor train unit, the steel rails of the motor train unit maintenance area are elevated a certain height from the ground by a steel frame, and the ground between the steel rails is designed with a maintenance groove. When the support platform of the device crosses the maintenance groove, the two walking wheels are suspended and not under stress, and a worker needs to manually lift the front end to the other side of the maintenance groove, which is difficult for one worker to operate, and the device is not convenient to move when crossing the groove; 2. The work platform of the device is high, and the support platform is not fixed with the ground or the steel rails, which causes the work platform to easily shake or tilt during use, thereby bringing safety risks to the workers. SUMMARY

[0005] The utility model wants to overcome the prior art's insufficient, provide a kind of easily striding over maintenance ditch, support stable bullet train group head car maintenance climbing platform.

[0006] The utility model discloses the following technical scheme:

[0007] A bullet train group head car maintenance climbing platform, including base 1, base bottom four corner positions are all provided with travelling wheel 11, base 1 rear end is provided with ladder 2 in vertical direction, and ladder 2 top is provided with operation platform 3, further including:

[0008] At least two auxiliary wheels 4 are arranged at the middle positions on the two sides below the base 1, and are used to assist the four travelling wheels 11 below the base 1 to cross the maintenance ditch 8.

[0009] At least one first fixing assembly 5 is arranged at the front end position above the base 1, the first fixing assembly 5 can be lifted in height, and is used to be supported and fixed with the bottom of the steel rail.

[0010] Further, the distance between the two auxiliary wheels 4 and the front end travelling wheel 11 of the base 1 is greater than the width of the maintenance ditch 8.

[0011] Further, the front end of the base 1 is provided with a group of first fixing assemblies 5 on the two sides above the base 1, and the first fixing assembly 5 comprises:

[0012] Mechanism box 51 is fixedly arranged at the front end position above the base 1.

[0013] Lifting screw rod 52 is vertically arranged on the mechanism box 51, and the lifting screw rod 52 is provided with a supporting plate 53 at the top, and the supporting plate 53 is in contact with the bottom surface of the steel rail 9.

[0014] Transmission mechanism 54 is arranged in the mechanism box 51, and the output end is threadedly connected with the lifting screw rod 52, and is used to drive the lifting screw rod 52 to lift.

[0015] Lifting handle 55 is arranged on the outside of the mechanism box 51, and the rotating shaft of the lifting handle 55 is inserted into the mechanism box 51 and connected with the input end of the transmission mechanism 54.

[0016] Further, the transmission mechanism 54 is two bevel gears 541 meshing transmission or two bevel gears meshing transmission or worm gear meshing transmission; when the transmission mechanism 54 is two bevel gears 541 meshing transmission, one of the bevel gears 541 is connected with the rotating shaft of the lifting handle 55, and the other bevel gear 541 is provided with a threaded hole in the middle, and the threaded hole is threadedly connected with the lifting screw rod 52.

[0017] Further, the second fixing assembly 6 is arranged at the middle rear position above the base 1, and the second fixing assembly 6 comprises:

[0018] Support seat 61, fixedly arranged at the middle rear position above the base 1;

[0019] Positioning block 62, arranged at the front end face of the middle part of the support seat 61, the height of the positioning block 62 is same with the height of the waist position of the steel rail 9;

[0020] Rotating plate 63, L-shaped structure, the end of the horizontal plate of the L-shaped structure is hinged at the bottom position of the front end face of the support seat 61, and the middle part of the vertical plate of the L-shaped structure is provided with a threaded hole;

[0021] Positioning screw 64, threadedly arranged in the threaded hole of the middle part of the vertical plate of the rotating plate 63, the front end of the positioning screw 64 is provided with a locking block 641, and the tail end of the positioning screw 64 is provided with a clamping handle 642.

[0022] Further, the back of the support seat 61 is connected with the ladder 2 through the reinforcing rod 21, and the reinforcing rib plate 22 is arranged at the angle between the ladder 2 and the working platform 3.

[0023] Further, the outer side and the front end of the working platform 3 are provided with the fence 31, and the inner side of the working platform 3 is hinged with the extension platform 7.

[0024] Further, the front end of the extension platform 7 is an arc-shaped concave surface, and the concave surface shape is matched with the arc of the EMU head.

[0025] The working principle of the utility model:

[0026] The base 1, the ladder 2 and the working platform 3 are integrally welded to form the climbing platform with C-shaped structure. Four walking wheels 11 are arranged at the four corner positions below the base 1, and two auxiliary wheels 4 are arranged at the middle two side positions, the distance between the two auxiliary wheels 4 and the two walking wheels 11 at the front end of the base 1 is greater than the width of the maintenance ditch 8, so that the two auxiliary wheels 4 can assist the two walking wheels 11 at the front end of the base 1 to cross the maintenance ditch 8, when the two walking wheels 11 at the front end of the base 1 walk above the maintenance ditch 8, the two walking wheels 11 are suspended, and the two walking wheels 11 at the tail end of the base 1 and the two auxiliary wheels 4 serve as the supporting points of the base 1, so that the two walking wheels 11 at the front end of the base 1 are moved to the ground on the other side of the maintenance ditch 8, and the base 1 of the climbing platform stably crosses the maintenance ditch 8.

[0027] The utility model discloses a first fixed component 5 is fixed to the front end of base 1 through two groups, and the end of base 1 is fixed through a second fixed component 6, thereby fixed on two steel rails 9. First fixed component 5 passes through rotating lifting handle 55, and lifting handle 55 passes through the lifting of two helical gears 541 of transmission mechanism 54 and drives lifting screw rod 52, and the top support plate 53 of lifting screw rod 52 is locked and fixed to the front end position of base 1 with the bottom surface of steel rail 9. Second fixed component 6 passes through the waist of steel rail 9 and is contacted with positioning block 62 to determine the transverse position positioning of the platform for climbing, and through lifting rotating plate 63, rotating clamping handle 642 is made, and locking block 641 of positioning screw rod 64 front end moves to the waist of steel rail 9 and is locked and fixed to the end of base 1.

[0028] The utility model discloses the beneficial effects compared with prior art:

[0029] 1, the utility model discloses two auxiliary wheels 4 in the middle part of base 1 help two walking wheels 11 of the front end of base 1 to cross the maintenance ditch 8 stably, prevent the platform for climbing from toppling because of the support point of two walking wheels 11 of the front end, and one staff can operate the platform for climbing base 1 to cross the maintenance ditch 8, improve the installation efficiency of the platform for climbing.

[0030] 2, through two groups of first fixed component 5 fixed base 1 front end, through a second fixed component 6 fixed base 1 end, guarantee that the platform for climbing does not shift, reduce the swing amplitude of operation platform 3 simultaneously, use the maintenance platform for climbing of motor train unit head car, and the maintenance personnel can carry out stable maintenance work on the platform, guarantee maintenance safety.

[0031] 3, the maintenance platform for climbing adopts high-strength steel structure, and convenient maintenance, and one person can complete the transfer and movement, to facilitate the transfer and storage between different maintenance points. ACCURACY OF DRAWINGS

[0032] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0033] Figure 2 It is the structure schematic diagram of the first fixed component of the utility model;

[0034] Figure 3 It is the installation fixed state schematic diagram of the utility model with steel rail;

[0035] Figure 4 It is the use state diagram of the second fixed component of the utility model;

[0036] Figure 5 It is the use state diagram of the utility model.

[0037] Mark in the drawing:

[0038] 1-Base, 11-Wheel;

[0039] 2-Ladder, 21-Reinforcing bar, 22-Reinforcing rib plate;

[0040] 3-Work platform, 31-Fence;

[0041] 4-Auxiliary wheels;

[0042] 5-First fixed component, 51-Mechanism box, 52-Lifting screw, 53-Support plate, 54-Transmission mechanism, 541-Helical gear, 55-Lifting handle;

[0043] 6-Second fixing component, 61-Support base, 62-Positioning block, 63-Rotating plate, 64-Positioning screw, 641-Locking block, 642-Clamping handle;

[0044] 7-Extended platform;

[0045] 8-Inspection trench;

[0046] 9-Rail. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0048] Example 1:

[0049] like Figures 1-5 As shown, a high-altitude maintenance platform for the head car of a high-speed train includes a base 1, a ladder 2, a working platform 3, four traveling wheels 11, two auxiliary wheels 4, two sets of first fixing components 5, one set of second fixing components 6, and an extension platform 7.

[0050] In an embodiment, such as Figure 1 , 3 As shown, the base 1, ladder 2 and working platform 3 form a "C"-shaped climbing platform, allowing the climbing platform base 1 to be inserted into the maintenance trench 8 from the gap under the rail 9. At the same time, the working platform 3 moves to the front of the EMU train head, and a gap is formed between the climbing platform base 1 and the working platform 3 to avoid the obstruction of the EMU train head.

[0051] The second fixing component 6 is connected to the ladder 2 via a reinforcing rod 21 at its back. A reinforcing rib plate 22 is provided at the angle between the ladder 2 and the work platform 3. A fence 31 is provided on the outside and front of the work platform 3. The reinforcing rod 21 and the reinforcing rib plate 22 are used to enhance the stability of the climbing platform, reduce the swaying amplitude of the work platform 3, and improve the safety of the workers.

[0052] In an embodiment, such as Figure 1 , 3As shown, four walking wheels 11 are installed at the four corner positions of the frame of the base 1, two auxiliary wheels 4 are installed at the middle positions on both sides below the base 1, and the distance between the two auxiliary wheels 4 and the two walking wheels 11 at the front end of the base 1 is greater than the width of the maintenance ditch 8. The two auxiliary wheels 4 are used to assist the two walking wheels 11 at the front end of the base 1 to cross the maintenance ditch 8, preventing the elevated platform from tilting due to the suspension of the support point of the two walking wheels 11 at the front end. When the two walking wheels 11 at the front end of the base 1 walk above the maintenance ditch 8, the two walking wheels 11 at the end of the base 1 and the two auxiliary wheels 4 serve as the support points of the base 1, and the two walking wheels 11 at the front end of the base 1 are moved to the ground on the other side of the maintenance ditch 8.

[0053] In an embodiment, as shown in Figure 2 、 3 The first fixing assembly 5 includes a mechanism box 51, a lifting screw 52, a support plate 53, a transmission mechanism 54, and a lifting handle 55. The mechanism box 51 is fixedly arranged at the front end position above the base 1; the lifting screw 52 is vertically arranged in the mechanism box 51, and the top of the lifting screw 52 is provided with the support plate 53; the transmission mechanism 54 is arranged in the mechanism box 51, and the output end is in threaded transmission connection with the lifting screw 52; and the lifting handle 55 is arranged outside the mechanism box 51, and the rotating shaft of the lifting handle 55 extends into the mechanism box 51 and is connected with the input end of the transmission mechanism 54.

[0054] The transmission mechanism 54 is two bevel gears 541 meshing transmission or two bevel gears meshing transmission or worm gear meshing transmission; when the transmission mechanism 54 is two bevel gears 541 or two bevel gears meshing transmission, one of the bevel gears 541 or bevel gears is connected with the rotating shaft of the lifting handle 55, and the other bevel gear 541 or bevel gear is provided with a threaded hole in the middle, which is in threaded connection with the lifting screw 52.

[0055] When the staff rotates the lifting handle 55, the lifting handle 55 drives the two bevel gears 541 to rotate, and the threaded hole in the middle of the second bevel gear 541 drives the lifting screw 52 to lift through the threaded cooperation. When the top support plate 53 of the lifting screw 52 is in contact with the bottom surface of the steel rail 9, the position of the front end of the base 1 is locked, preventing the displacement of the front end of the base 1 during use of the elevated platform, causing the elevated platform to shake, and the staff on the work platform 3 to easily fall down.

[0056] In an embodiment, as shown in Figure 3 、 4As shown, the second fixing assembly 6 comprises a support seat 61, a positioning block 62, a rotating plate 63 and a positioning screw 64. The support seat 61 is fixedly arranged at a middle rear position above the base 1; the positioning block 62 is arranged at a front end face of the middle part of the support seat 61, and the height of the positioning block 62 is the same as the height of the waist position of the steel rail 9; the rotating plate 63 is of an L-shaped structure, the horizontal plate end of the L-shaped structure is hingedly arranged at a bottom position of the front end face of the support seat 61, and a threaded hole is arranged in the middle part of the vertical plate of the L-shaped structure; the positioning screw 64 is threadedly arranged in the threaded hole in the middle part of the vertical plate of the rotating plate 63, and a locking block 641 is arranged at the front end of the positioning screw 64, and a clamping handle 642 is arranged at the tail end of the positioning screw 64.

[0057] When the positioning block 62 is attached to the waist position of the steel rail 9, it indicates that the climbing platform is transversely moved to the position, then the rotating plate 63 is lifted, the clamping handle 642 is rotated, and the locking block 641 at the front end of the positioning screw 64 is moved to the other side of the waist position of the steel rail 9 to lock and fix the tail end of the base 1, so that the tail end of the base 1 is prevented from being displaced during use of the climbing platform.

[0058] In the embodiment, as shown in Figure 3 、 5 As shown, the extension platform 7 is hingedly arranged inside the working platform 3, the front end of the extension platform 7 is an arc-shaped concave surface, and the concave surface shape is matched with the curvature of the head of the EMU; when the gap between the working platform 3 and the head of the EMU is large, the working personnel can turn and open the extension platform 7, so that the front end of the extension platform 7 is rested on the head of the EMU, the working personnel stands on the extension platform 7 to operate, and the working distance is pulled in (close); the arc-shaped concave surface at the front end of the extension platform 7 is covered with a rubber pad layer, so that scratches are prevented from being generated on the head of the EMU when the extension platform 7 is used.

[0059] The working mode of the utility model is as follows:

[0060] Step 1: After the head of the EMU is parked at the maintenance position, the working personnel pushes the device to the head of the EMU, the base 1 of the device is vertically placed on the steel rail 9, and then the device is slowly pushed to pass through the gap below the steel rail 9. When the two walking wheels 11 at the front end of the base 1 are walked above the maintenance ditch 8, the two walking wheels 11 are suspended, at this time, the two walking wheels 11 and the two auxiliary wheels 4 at the tail end of the base 1 serve as the supporting points of the base 1, the device is continuously pushed, and the two walking wheels 11 at the front end of the base 1 are moved to the ground on the other side of the maintenance ditch 8.

[0061] Step 2: When the positioning block 62 of the second fixing assembly 6 is attached to the waist position of the steel rail 9, it indicates that the climbing platform is transversely moved to the position, then the working personnel lifts the rotating plate 63, rotates the clamping handle 642, and moves the locking block 641 at the front end of the positioning screw 64 to the other side of the waist position of the steel rail 9 to lock and fix the tail end of the base 1.

[0062] Step 3: When the staff rotates the lifting handle 55 of the two first fixing assemblies 5 in turn, the lifting handle 55 drives the two bevel gears 541 to rotate, the threaded hole in the middle of the second bevel gear 541 drives the lifting screw 52 to lift through the threaded cooperation, and the top support plate 53 of the lifting screw 52 is in contact with the bottom surface of the steel rail 9 to lock the position of the front end of the base 1.

[0063] Step 4: The staff can climb the work platform 3 through the ladder 2 to perform the maintenance work, when the gap between the work platform 3 and the head of the motor train unit is large, the staff can turn over and open the extension platform 7, so that the front end of the extension platform 7 is lapped on the head of the motor train unit, and the staff can operate on the extension platform 7.

[0064] It should be noted that the technical solutions of the utility model are described in detail, the principles of the utility model are described, and the description of the above working principle is only used to help understand the core idea of the utility model. It should be pointed out that for ordinary skilled personnel in the technical field, the utility model can be improved and modified without departing from the principles of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

[0065] The skilled in the art of the utility model can modify or supplement the described specific embodiments or adopt similar ways to replace, as long as the structure of the utility model is not deviated or beyond the range defined by the claims, which belongs to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A high-speed train head car maintenance climbing platform, comprising a base (1), walking wheels (11) are arranged at the bottom of the four corners of the base, a ladder (2) is vertically arranged at the rear end of the base (1), and a working platform (3) is arranged at the top of the ladder (2), characterized in that, Also include: At least two auxiliary wheels (4) are arranged at the middle of the bottom of the base (1) on both sides of the position, used to help the four walking wheels (11) under the base (1) to cross the maintenance ditch (8); At least one set of first fixed components (5) is arranged at the front end of the top of the base (1), and the first fixed component (5) can be lifted in height, which is used to support and fix with the bottom of the steel rail.

2. The EMU head car service access platform of claim 1, wherein: The distance between the two auxiliary wheels (4) and the front walking wheels (11) of the base (1) is greater than the width of the maintenance ditch (8).

3. The EMU head car service access platform of claim 1, wherein: The top of the base (1) is provided with a set of first fixed components (5) on both sides of the front end, and the first fixed component (5) comprises: Mechanism box (51), fixedly arranged at the front end of the top of the base (1); Lifting screw (52), vertically arranged on the mechanism box (51), the top of the lifting screw (52) is provided with a support plate (53), and the support plate (53) is in contact with the bottom surface of the steel rail (9); Transmission mechanism (54), arranged in the mechanism box (51), the output end is in threaded transmission connection with the lifting screw (52), used to drive the lifting screw (52) to lift; Lifting handle (55), arranged outside the mechanism box (51), the rotating shaft of the lifting handle (55) extends into the mechanism box (51) and is connected with the input end of the transmission mechanism (54).

4. The EMU head car service access platform of claim 3, wherein: The transmission mechanism (54) is two bevel gears (541) meshing transmission or two bevel gears meshing transmission or worm gear meshing transmission; when the transmission mechanism (54) is two bevel gears (541) meshing transmission, one of the bevel gears (541) is connected with the rotating shaft of the lifting handle (55), and the other bevel gear (541) is provided with a threaded hole in the middle, which is in threaded connection with the lifting screw (52).

5. The EMU head car service access platform of claim 1, wherein: The middle rear position of the top of the base (1) is provided with a second fixed component (6), and the second fixed component (6) comprises: Support seat (61), fixedly arranged at the middle rear position of the top of the base (1); Positioning block (62), arranged at the front end of the middle of the support seat (61), the height of the positioning block (62) is the same as the height of the waist position of the steel rail (9); Rotating plate (63), "L" type structure, the end of the horizontal plate of the "L" type structure is hinged to the bottom position of the front end surface of the support seat (61), and the vertical plate of the "L" type structure is provided with a threaded hole in the middle; Positioning screw (64), threaded into the threaded hole in the middle of the vertical plate of the rotating plate (63), the front end of the positioning screw (64) is provided with a locking block (641), and the end of the positioning screw (64) is provided with a clamping handle (642).

6. The EMU head car service access platform of claim 5, wherein: The back of the support seat (61) is connected with the ladder (2) through the reinforcing rod (21), and the reinforcing rib plate (22) is arranged at the included angle between the ladder (2) and the working platform (3).

7. The EMU head car service access platform of claim 1, wherein: The outer side and the front end of the working platform (3) are provided with a fence (31), and the inner side of the working platform (3) is hinged with an extension platform (7).

8. The EMU head car service access platform of claim 7, wherein: The front end of the extension platform (7) is an arc-shaped concave surface, and the concave surface shape is matched with the arc of the head of the motor train unit.

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