Safety fixing device for top climbing ladder of motor train unit

Abstract

The utility model discloses a safety fixing device for a top climbing ladder of a motor train unit, and belongs to the technical field of motor train unit maintenance. A safety fixing device for a top climbing ladder of a motor train unit comprises a fixing shell and further comprises two fixing rods which are fixedly connected to the fixing shell and symmetrically arranged on the two sides of the outer wall of the fixing shell, and the fixing rods are conical; the two movable plates are both mounted on the fixed shell in a sliding manner; the drainage hole in the upper portion of the vehicle body serves as a fixing point, under the cooperation of the fixing shell, the fixing rod moving plate and the fixator, the climbing ladder can be limited and fixed, the stability of the ladder placed on the vehicle body is greatly improved, and therefore the occurrence probability of potential safety hazards is reduced, and the safety of the climbing ladder is improved. And the climbing speed of maintainers can be increased, so that the working efficiency is improved, and rapid recovery of railway transportation order is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of EMU maintenance, in particular to a safety fixing device for an EMU boarding ladder. Background Art

[0002] An EMU refers to a train composed of multiple carriages. Due to the limitation of its appearance characteristics, the outer windshield adopts a fully sealed structure and the body height is relatively high. When a fault occurs in the pantograph or other equipment on the roof, maintenance personnel need to climb the ladder to the roof for maintenance.

[0003] Currently, during the process of climbing the ladder to get on and off the roof, due to the high body and the relatively smooth surface of the body, the ladder cannot be placed stably, resulting in the ladder being prone to violent shaking or tipping during use, thus increasing the probability of potential safety hazards. Moreover, the poor stability of the ladder will also affect the climbing speed of maintenance personnel, thereby reducing the operation efficiency and being unfavorable for the rapid restoration of the railway transportation order. To solve the above problems, a safety fixing device for an EMU boarding ladder is provided. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that during the process of climbing the ladder to get on and off the roof currently, due to the unstable placement of the ladder, it not only increases the probability of potential safety hazards but also reduces the operation efficiency, and to propose a safety fixing device for an EMU boarding ladder.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A safety fixing device for an EMU boarding ladder includes a fixed shell, and further includes: two fixed rods, both fixedly connected to the fixed shell, wherein the two fixed rods are symmetrically arranged on both sides of the outer wall of the fixed shell, and the shape of the fixed rod is conical; two moving plates, both slidably installed on the fixed shell, wherein fixators are installed on both of the two moving plates, and an adjusting part is arranged in the fixed shell, and the adjusting part is used to drive the two fixators to move towards and away from each other.

[0007] To adjust the distance between the two fixators, preferably, the adjusting part includes a double-headed screw rod rotatably connected in the fixed shell, a worm gear is fixedly connected to the double-headed screw rod, wherein a worm meshing with the worm gear is rotatably connected to the fixed shell, a knob is fixedly connected to one end of the worm, and the two moving plates are respectively threadedly connected to both sides of the outer wall of the double-headed screw rod.

[0008] To guide the moving plate, preferably, a guiding opening is formed through the fixed shell, and the moving plate is slidably connected in the guiding opening.

[0009] In order to improve the engagement between the fixed rod and the drainage hole in the upper part of the car body, preferably, an anti-slip sleeve is sleeved on the surface of the fixed rod, and the material of the anti-slip sleeve is rubber.

[0010] In order to facilitate the fixation of the climbing ladder, preferably, the fixator includes a fixed clamp fixedly connected to the moving plate, a movable clamp is rotatably connected to the fixed clamp, a U-shaped groove is provided on the movable clamp, a bolt is fixedly connected to the fixed clamp, and the bolt passes through the U-shaped groove and is threadedly connected with a nut.

[0011] In order to facilitate the application of force to rotate the nut, further, two assisting plates are fixedly connected to the nut, and the two assisting plates are symmetrically arranged on both sides of the surface of the nut.

[0012] Compared with the prior art, the present utility model provides a safety fixing device for a climbing ladder of a multiple unit train, which has the following beneficial effects:

[0013] 1. For the safety fixing device of the climbing ladder of the multiple unit train, by using the drainage hole in the upper part of the car body as a fixing point and through the coordinated use of the fixed shell, the fixed rod, the moving plate and the fixator, the climbing ladder can be limited and fixed, greatly improving the stability of the ladder placed on the car body, so that the ladder will not shake violently or tip over during use, thereby reducing the occurrence probability of potential safety hazards, and can also improve the climbing speed of maintenance personnel, and further improve the operation efficiency, which is beneficial to the rapid restoration of the railway transportation order.

[0014] 2. For the safety fixing device of the climbing ladder of the multiple unit train, by rotating the knob and driving the two fixators to move away from or towards each other, the distance between the two fixators can be easily adjusted, so that the device can fix ladders of different sizes, thus greatly improving the applicability of the device.

[0015] Parts not involved in the device are the same as or can be implemented by using the prior art. The present utility model solves the problems that during the process of climbing up and down the car body by the ladder, due to the unstable placement of the ladder, it not only increases the occurrence probability of potential safety hazards, but also reduces the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric structure schematic diagram of a safety fixing device for a climbing ladder of a multiple unit train proposed by the present utility model;

[0017] Figure 2 It is a partial axonometric structure schematic diagram of a safety fixing device for a climbing ladder of a multiple unit train proposed by the present utility model Figure 1 ;

[0018] Figure 3Partial axonometric structure schematic of a safety fixing device for the access ladder of a multiple unit train proposed by the present utility model Figure 2 ;

[0019] Figure 4 Partial axonometric structure schematic of a safety fixing device for the access ladder of a multiple unit train proposed by the present utility model Figure 3 。

[0020] In the figure: 1, fixed shell; 2, fixed rod; 21, anti-slip sleeve; 3, moving plate; 4, fixator; 41, fixed clamp; 42, movable clamp; 43, bolt; 44, nut; 5, double-headed lead screw; 51, worm gear; 52, worm; 53, knob; 54, guiding port; 6, assisting plate. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0023] Embodiment:

[0024] Referring to Figures 1 - 4 , the embodiment of the present utility model provides a safety fixing device for the access ladder of a multiple unit train, including a fixed shell 1, and further including: two fixed rods 2, both fixedly connected to the fixed shell 1, wherein the two fixed rods 2 are symmetrically arranged on both sides of the outer wall of the fixed shell 1, and the shape of the fixed rod 2 is conical; two moving plates 3, both slidably installed on the fixed shell 1, wherein fixators 4 are installed on both of the two moving plates 3, and an adjusting part is arranged inside the fixed shell 1, and the adjusting part is used to drive the two fixators 4 to move towards and away from each other.

[0025] Specifically, during use, through the combined use of the fixed shell 1, the fixed rod 2, the moving plate 3, and the fixator 4, the climbing ladder can be limited and fixed, greatly improving the stability of the ladder placed on the vehicle body, preventing the ladder from shaking violently or toppling during use, thereby reducing the probability of potential safety hazards. It can also improve the climbing speed of maintenance personnel, thus enhancing the operation efficiency, facilitating the rapid restoration of railway transportation order. Moreover, through the setting of the adjustment part, the distance between the two fixators 4 can be conveniently adjusted, enabling the device to fix ladders of different sizes, thus greatly improving the applicability of the device.

[0026] The adjustment part includes a double-headed screw rod 5 rotatably connected inside the fixed shell 1. The threads on both sides of the outer wall of the double-headed screw rod 5 are designed in the opposite direction. A worm gear 51 is fixedly connected to the double-headed screw rod 5. Among them, a worm 52 meshing with the worm gear 51 is rotatably connected to the fixed shell 1. One end of the worm 52 is fixedly connected to a knob 53. The two moving plates 3 are respectively threadedly connected to both sides of the outer wall of the double-headed screw rod 5.

[0027] Specifically, during use, by rotating the knob 53 to drive the worm 52, the worm gear 51, and the double-headed screw rod 5 to rotate, under the action of the opposite threads, the two moving plates 3 move away from or towards each other, driving the two fixators 4 to move synchronously, which can conveniently adjust the distance between the two fixators 4, enabling the device to fix ladders of different sizes, thus greatly improving the applicability of the device.

[0028] A guiding opening 54 is penetrated and opened on the fixed shell 1, and the moving plate 3 is slidably connected inside the guiding opening 54.

[0029] Specifically, through the setting of the guiding opening 54, the moving plate 3 can be guided to move only horizontally.

[0030] An anti-slip sleeve 21 is sleeved on the surface of the fixed rod 2, and the material of the anti-slip sleeve 21 is rubber.

[0031] Specifically, through the setting of the anti-slip sleeve 21, the flexibility and friction on the surface of the fixed rod 2 can be increased, thereby improving the biting property of the fixed rod 2 with the drainage holes on the upper part of the vehicle body, making the connection between the device and the EMU more stable.

[0032] The fixator 4 includes a fixed clamp 41 fixedly connected to the moving plate 3. An active clamp 42 is rotatably connected to the fixed clamp 41. A U-shaped groove is provided on the active clamp 42. A bolt 43 is fixedly connected to the fixed clamp 41. The bolt 43 passes through the U-shaped groove and is threadedly connected to a nut 44.

[0033] Specifically, during use, first, the support rods on both sides of the ladder are respectively clamped in the two fixed clamps 41. Then, rotate the movable clamp 42 so that the bolt 43 passes through the U-shaped groove of the movable clamp 42. Next, align the nut 44 with the bolt 43 and rotate it. Under the action of the thread, the nut 44 is closely attached to the surface of the movable clamp 42, thereby facilitating the connection and fixation of the device to the ladder.

[0034] Two assisting plates 6 are fixedly connected to the nut 44, and the two assisting plates 6 are symmetrically arranged on both sides of the surface of the nut 44.

[0035] Specifically, through the setting of the assisting plates 6, it is convenient to apply force to rotate the nut 44, thereby improving the convenience of fixing the ladder.

[0036] During the use of the safety fixing device for the boarding ladder of this EMU, first, the support rods on both sides of the boarding ladder are respectively clamped in the two fixed clamps 41. Then, rotate the movable clamp 42 so that the bolt 43 passes through the U-shaped groove of the movable clamp 42. Next, align the nut 44 with the bolt 43 and rotate it. Under the action of the thread, the nut 44 is closely attached to the surface of the movable clamp 42, thereby facilitating the connection and fixation of the device to the ladder. Then, the maintenance personnel can place the boarding ladder on the EMU and quickly insert the two conical fixing rods 2 into the drain holes in the upper part of the car body. Then, the maintenance personnel can climb to the top of the vehicle with the help of the ladder to perform maintenance operations.

[0037] By using the drain holes in the upper part of the car body as fixed points and through the coordinated use of the fixed shell 1, the fixing rods 2, the moving plates 3, and the fixators 4, this device can limit and fix the boarding ladder, greatly improving the stability of the ladder placed on the car body, preventing the ladder from shaking violently or toppling during use, thereby reducing the probability of potential safety hazards. Moreover, it can also improve the climbing speed of the maintenance personnel, thereby improving the operation efficiency and facilitating the rapid restoration of the railway transportation order.

[0038] On the other hand, during use, by rotating the knob 53 and driving the worm 52, the worm gear 51, and the double-headed screw rod 5 to rotate, under the action of the opposite threads, the two moving plates 3 move away from or towards each other, driving the two fixators 4 to move synchronously, which is convenient for adjusting the distance between the two fixators 4, enabling the device to fix ladders of different sizes, thus greatly improving the applicability of the device.

[0039] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A safety fixing device for the boarding ladder of a multiple unit train, comprising a fixing shell (1), characterized in that, It further includes: Two fixed rods (2), both fixedly connected to the fixed housing (1), wherein, the two fixed rods (2) are symmetrically arranged on both sides of the outer wall of the fixed housing (1), and the shape of the fixed rod (2) is conical; Two moving plates (3), both slidably mounted on the fixed housing (1), wherein, fixators (4) are mounted on both of the two moving plates (3), and an adjusting part is arranged in the fixed housing (1), and the adjusting part is used to drive the two fixators (4) to move towards and away from each other.

2. The safety fixing device for the boarding ladder of the multiple unit train according to claim 1, characterized in that, The adjusting part includes a double-headed lead screw (5) rotatably connected in the fixed housing (1), and a worm gear (51) is fixedly connected to the double-headed lead screw (5), wherein, a worm (52) meshing with the worm gear (51) is rotatably connected to the fixed housing (1), a knob (53) is fixedly connected to one end of the worm (52), and the two moving plates (3) are respectively threadedly connected to both sides of the outer wall of the double-headed lead screw (5).

3. The safety fixing device for the boarding ladder of the multiple unit train according to claim 1, characterized in that, A guiding opening (54) is penetrated and opened on the fixed housing (1), and the moving plate (3) is slidably connected in the guiding opening (54).

4. The safety fixing device for the boarding ladder of a multiple unit train according to claim 1, characterized in that, An anti-slip sleeve (21) is sleeved on the surface of the fixed rod (2), and the material of the anti-slip sleeve (21) is rubber.

5. The safety fixing device for the boarding ladder of the multiple unit train according to claim 1, characterized in that, The fixator (4) includes a fixed clamp (41) fixedly connected to the moving plate (3), a movable clamp (42) is rotatably connected to the fixed clamp (41), a U-shaped groove is provided on the movable clamp (42), a bolt (43) is fixedly connected to the fixed clamp (41), and the bolt (43) passes through the U-shaped groove and is threadedly connected with a nut (44).

6. The safety fixing device for the access ladder of an EMU according to claim 5, characterized in that, Two assisting plates (6) are fixedly connected to the nut (44), and the two assisting plates (6) are symmetrically arranged on both sides of the surface of the nut (44).

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