Tool for replacing pantograph supporting insulator of motor train unit

Abstract

The utility model relates to a tool for replacing a pantograph supporting insulator of a motor train unit. The tool comprises a supporting frame and a base. The supporting frame comprises a bearing table, a first lengthening rod arranged at the bottom of the bearing table, a hollow second lengthening rod and a locking device, the lower end of the first lengthening rod is slidably nested in the second lengthening rod, and the locking device is used for locking the relative positions of the first lengthening rod and the second lengthening rod; the base comprises a lengthening rod seat and a lifting device arranged at the bottom of the lengthening rod seat; the extension bar seat is of a hollow cuboid structure, a side panel at one end of the extension bar seat is detachable, and a detachable holder frame and a laser level gauge are arranged in the hollow cuboid structure; scales for accurately adjusting or correcting the height are further arranged on the outer wall of the first extension rod; the problem that the installation state of a non-fault insulator is damaged easily in the replacement process of the pantograph supporting insulator is solved, the overhaul efficiency and the safety rate are improved, adaptability is high, and popularization is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tool for overhauling, in particular to a tool for replacing a pantograph support insulator of a motor train unit. BACKGROUND

[0002] The pantograph support insulator is an important component of the high-voltage power supply system of the motor train unit, and the function of the insulator is to support the pantograph, to ensure the insulation between the pantograph body and the roof of the vehicle, and to support the insulator, which is composed of a core rod, upper and lower connecting flanges and a silicone rubber umbrella cover. The core rod uses a high-strength epoxy glass fiber drawing rod as the internal insulation and main support component of the product, and the upper and lower connecting flanges use stainless steel. The core rod is covered with a high-temperature vulcanized silicone rubber umbrella cover with good electrical properties to bear the external insulation of the product. When the support insulator component fails, it will cause a significant reduction in the insulation performance between the pantograph body and the roof of the vehicle, and will cause the insulator to explode and the pantograph to arc, which can easily cause a fire in the motor train unit. When the support insulator is installed improperly, it will cause instability of the pantograph body, thereby causing poor current collection of the pantograph and seriously affecting the normal operation of the traction system of the motor train unit. When the installation state is severely poor, it may cause the pantograph body to separate from the vehicle body during high-speed operation of the motor train unit, causing great harm to the motor train unit. Therefore, the pantograph support insulator has very high standards for daily maintenance and replacement, and cannot have any potential risks.

[0003] During routine maintenance at all levels, the pantograph support insulator needs to be checked and cleaned. If a fault is found, the faulty insulator needs to be replaced in time. However, during on-site operations, it is found that when replacing the insulator, the pantograph body needs to be lifted by manpower to remove the corresponding insulator. Due to the large weight and volume of the pantograph body, the process of lifting the pantograph by manpower may cause damage to the installation state of the non-faulty support insulator. In addition, due to the limited space for work on the roof, there is a great risk to personal safety during the process of lifting the pantograph by manpower. SUMMARY

[0004] The utility model is to solve the problem that in the existing process of replacing the pantograph support insulator of the motor train unit, manpower is needed to lift the pantograph body to remove the corresponding insulator. Due to the large weight and volume of the pantograph body, the process of lifting the pantograph by manpower may cause damage to the installation state of the non-faulty support insulator. In addition, there is a great risk to personal safety during the process of lifting the pantograph by manpower.

[0005] To solve the above problems, the utility model adopts the technical scheme of: a tool for replacing a pantograph support insulator of a motor train unit, comprising:

[0006] a support frame and a base;

[0007] The support frame comprises a bearing table, a first lengthening rod arranged at the bottom of the bearing table, a hollow second lengthening rod, and a locking device, the lower end of the first lengthening rod is slidably nested in the second lengthening rod, and the locking device is used to lock the relative positions of the first lengthening rod and the second lengthening rod.

[0008] The base comprises a lengthening rod seat and a lifting device arranged at the bottom of the lengthening rod seat; the lengthening rod seat is a hollow cuboid structure, one end of the side panel of which is detachable, and a detachable holder and a laser level are arranged inside the hollow cuboid structure; the laser level is used for positioning or leveling measurement in the case of replacement of the pantograph support insulator of the EMU or other maintenance work; since the holder is detachable, the holder and the laser level can be detached and placed on the bearing table as a whole to adapt to higher leveling measurement.

[0009] A scale for accurately adjusting or correcting the height is further arranged on the outer wall of the first lengthening rod.

[0010] Further, the bearing table comprises a hollow bearing shell and two clamping baffles symmetrically arranged on both sides of the hollow bearing shell, the clamping baffles are L-shaped, one end of each clamping baffle is inserted into the bearing shell and can slide in and out of the bearing shell, an elastic structure is arranged in the bearing shell, and the parts of the two extendable clamping baffles in the bearing shell are connected through the elastic structure; under the elastic force of the elastic structure, the clamping baffles can clamp the pantograph body of different specifications.

[0011] Further, an elastic rubber block is further arranged on the inner side of the clamping baffle.

[0012] Further, an anti-skid pad is arranged on the surface of the bearing table to increase the friction when contacting the pantograph body and prevent sliding.

[0013] Further, the locking device is a locking bolt arranged on the second lengthening rod, the locking bolt is tightened inward to press the surface of the first lengthening rod, thereby locking the relative positions of the first lengthening rod and the second lengthening rod, and the height of the pantograph of different vehicle types can be adjusted.

[0014] Further, the lifting device comprises a rhombic lifting frame of a jack structure, an adjusting screw rod passing through the middle of the rhombic lifting frame, an adjusting through hole arranged on the adjusting screw rod, and a base support arranged at the bottom of the rhombic lifting frame; the height of the rhombic lifting frame is controlled by inserting an external rod into the adjusting hole, and under the action of external force, the external rod rotates and drives the adjusting screw rod to control the height of the top of the rhombic lifting frame, thereby accurately controlling the lifting of the pantograph body; the other end of the adjusting screw rod can also be designed as a Z-shaped structure to facilitate manual rotation of the adjusting screw rod by the operator.

[0015] Further, the base support bottom surface is fixedly provided with a detachable anti-skid rubber pad, and a groove matching with the contour of the base support is arranged on the upper end surface of the anti-skid rubber pad.

[0016] Further, the support frame is integrally formed in a square steel pipe structure and is subjected to yellow paint treatment, so that the structural strength and the eye-catching degree are increased, and tools are prevented from being left on the roof.

[0017] The utility model has the advantages and characteristics that:

[0018] 1. The utility model discloses a tool for replacing support insulators of a pantograph of a motor train unit, adopts the cooperation design of a rhombic lifting frame, an adjusting screw rod and an adjusting hole, and achieves the effect of accurately controlling the lifting of the pantograph body, so that manpower is no longer needed to lift.

[0019] 2. The utility model discloses a tool for replacing support insulators of a pantograph of a motor train unit, satisfies the use requirement of various vehicle types through the nesting design of an extension rod, is good in applicability, is applicable to the replacement of support insulators of pantographs of various vehicle types, can be popularized in the whole country, and has great popularization value.

[0020] 3. The utility model discloses a tool for replacing support insulators of a pantograph of a motor train unit, rubber anti-skid pads are arranged on the bearing table and the base, so that the stability during supporting the pantograph body is ensured, and rigid collision between the tool and the pantograph body is avoided.

[0021] 4. The utility model discloses a tool for replacing support insulators of a pantograph of a motor train unit, adopts the design of integrated detachable laser level meters, achieves the effect of expanding positioning and leveling measurement functions, improves the multifunctionality of the tool, adopts telescopic supporting legs, achieves the effect of improving overall stability and adapting to different ground conditions, and enhances the applicability and safety of the tool. DRAWINGS

[0022] Figure 1 It is the overall structure schematic view of the preferred embodiment of the utility model;

[0023] Figure 2 It is the overall structure schematic view of another preferred embodiment of the utility model (with clamping baffle);

[0024] Figure 3 It is the overall structure schematic view of another preferred embodiment of the utility model (with clamping baffle); Figure 2 It is the structure schematic view of the enlarged portion of the dashed line;

[0025] Figure 4 It is the structure schematic view of the anti-skid rubber pad of the utility model;

[0026] 1-support frame, 2-base, 11-bearing table, 12-first extension rod, 14-second extension rod, 13-locking device, 25-extension rod seat, 251-pan-tilt frame, 252-laser level, 111-bearing shell, 112-clamping baffle, 113-elastic rubber block, 26-rhombic lifting frame, 27-adjusting screw, 28-adjusting through hole, 29-base support, 291-anti-skid rubber pad, 292-groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] Please refer to Figures 1-2 The utility model relates to a kind of for EMU pantograph support insulator replacement tool, including: support frame 1 and base 2;

[0030] The support frame 1 includes bearing table 11, the first extension rod 12 of being set to bearing table bottom, hollow second extension rod 14 and locking device 13, the lower end of first extension rod 12 is slidably nested in second extension rod 14, locking device 13 is used to lock the relative position of first extension rod 12, second extension rod 14;

[0031] In the embodiment, the bearing table 11 can include the bearing shell 111 of hollow structure and the two clamping baffles 112 symmetrically arranged on both sides of the bearing shell 111 of hollow structure, the clamping baffle 112 is L-shaped, one end of which is inserted into the bearing shell 111 and can be telescopic sliding in the bearing shell, the elastic structure is arranged in the bearing shell 111, the part of the two telescopic clamping baffles 112 in the bearing shell 111 is connected by the elastic structure, and the clamping baffle can stably clamp the pantograph body of different specifications under the action of the elastic force of the elastic structure. As a preferred scheme, the inner side of the clamping baffle 112 is also provided with an elastic rubber block 113, to further prevent the pantograph body from being damaged during clamping.

[0032] In the embodiment, the locking device 13 can be a locking bolt arranged on the second extension rod 14, and the locking bolt is tightened inward to press the surface of the first extension rod 12 and lock the relative position of the first extension rod 12 and the second extension rod 14, which can be adjusted according to the height of the pantograph of different vehicles.

[0033] Please refer to Figure 3The base 2 comprises an extension rod seat 25 and a lifting device arranged at the bottom of the extension rod seat 25; the extension rod seat 25 is a hollow cuboid structure, one end of the side panel of which is detachable, and a detachable holder 251 and a laser level 252 are arranged in the hollow cuboid structure; the laser level 252 is used for positioning or level measurement in the case of pantograph support insulator replacement or other maintenance work of the EMU; since the holder 251 is detachable, the holder 251 and the laser level 252 can be detached and placed on the bearing table 11 as a whole to adapt to higher level measurement.

[0034] As a preferred scheme, the surface of the bearing table 11 is provided with an anti-skid pad for increasing the friction force when contacting the pantograph body and preventing sliding.

[0035] In the embodiment, the lifting device comprises a rhombic lifting frame 26 of a jack structure, an adjusting screw 27 passing through the middle part of the rhombic lifting frame, an adjusting through hole 28 arranged on the adjusting screw, and a base support 29 arranged at the bottom of the rhombic lifting frame; the height of the rhombic lifting frame 26 is controlled by inserting an external rod into the adjusting hole 28 (the adjusting hole is a conventional structure, so no enlarged node diagram is given), and the external rod is rotated under the action of external force and drives the adjusting screw 27 to control the height of the top of the rhombic lifting frame 26, for accurately controlling the lifting of the pantograph body. The other end of the adjusting screw 27 can also be designed as a Z-shaped structure, which is convenient for an operator to manually rotate the adjusting screw;

[0036] Embodiment 2:

[0037] Please refer to Figure 4 As a preferred scheme, different from embodiment 1, the bottom surface of the base support 29 is fixedly provided with a detachable anti-skid rubber pad 291.

[0038] The anti-skid rubber pad increases the friction force between the pad and the vehicle body during use, enhances the overall stability of the tooling, buffers the pressure and weight from the tooling when transmitted to the vehicle body, and avoids rigid contact between the base support 29 and the vehicle body, thereby protecting the vehicle body from damage.

[0039] The upper end surface of the anti-skid rubber pad 291 is provided with a groove 292 embedded with the contour of the base support, so that the base support is placed more stably and is convenient for disassembly.

[0040] As another preferred solution, considering that the roof is curved in some places, a telescopic support foot can also be added to the four corners of the base support 29. The telescopic support foot includes an outer sleeve fixed to the bottom of the base, an inner telescopic rod slidably embedded in the outer sleeve, a locking bolt for locking the position of the inner telescopic rod, and a non-slip pad provided at the bottom end of the inner telescopic rod. In use, the height of the four telescopic support feet can be adjusted according to the ground conditions, and fixed by the locking bolt to achieve stable placement and bearing of the tool.

[0041] This design not only enhances the stability of the tool, but also adapts to different ground conditions, improving the applicability of the tool. At the same time, the design of the telescopic support foot facilitates storage and does not affect the overall portability of the tool. In addition, the setting of the non-slip pad further increases the friction with the ground, improving the safety during work.

[0042] Embodiment 3:

[0043] As a preferred solution, unlike embodiment 1, the support frame 1 as a whole adopts a square steel tube structure and is treated with yellow baking paint to increase structural strength and visibility, preventing the tool from being left on the roof.

[0044] The support frame 1 can also use threaded connection between the bearing table 11 and the extension rod 12, facilitating height adjustment and storage of the tool. The extension rod 12 and the extension rod 14 are connected in an embedded manner, which can flexibly adjust the height of the tool during use, quickly position the tool to the required height during the operation process, and then be fixed by the locking device 13. The embedded connection method can also reduce the overall storage length of the support frame 1. The support frame 1 as a whole adopts a square steel tube, making the support frame 1 stable in structure and not easily deformed, and able to withstand a large pressure and weight. The whole is treated with yellow baking paint, which is eye-catching and can effectively prevent the risk of tool left on the roof. The appearance also has a beautiful and neat effect.

[0045] The extension rod seat 25 in the base 2 is a square stacked structure. The upper square design facilitates connection with the support frame 1 through embedded and detachable connection. The detachable connection facilitates the storage of the support frame 1 in a separate manner, reduces the storage volume, and facilitates carrying during the operation process. The lower part is an extended square tube, which is connected with the upper part by welding. The square design increases the stability of the embedded connection between the support frame 1 and the base 2, and increases the transmission point of the pressure and weight between the support frame 1 and the base 2. The diamond-shaped lifting frame 26 adopts a diamond-shaped design, which can be adjusted in height through the adjustment hole 28 and the adjustment screw 27 to achieve height adjustment of the diamond-shaped lifting frame 26. Clockwise rotation of the adjustment hole 28 corresponds to extension of the adjustment screw 27, and the height of the diamond-shaped lifting frame 26 increases. Counterclockwise rotation of the adjustment hole 28 corresponds to retraction of the adjustment screw 27, and the height of the diamond-shaped lifting frame 26 decreases. The adjustable height of the diamond-shaped lifting frame 26 can also reduce the storage volume and facilitate carrying during the operation process.

[0046] Specific use method:

[0047] Preparation: Before replacing the pantograph support insulator, first connect the support frame 1 and the base 2 through the lengthening rod seat 25 by the embedded installation method, and then place the whole tool next to the pantograph support insulator to be replaced.

[0048] Use method: raise the lengthening rod 12 embedded in the lengthening rod 14, so that the bearing table 11 is in contact with the pantograph body (if the height is not enough, the bearing table 11 can be raised by counterclockwise rotation for height supplement), and then rotate the locking device 13 clockwise to lock and fix the lengthening rod 12 and the lengthening rod 14. After the tool is placed, the pantograph support insulator fixing bolt can be disassembled, after the fixing bolt is disassembled, adjust the hole 28 to rotate clockwise to drive the adjusting screw 27 to extend, so that the diamond-shaped lifting frame 26 raises the pantograph body slowly, and when the pantograph support insulator is completely separated from the pantograph body, stop adjusting. Take out the faulty pantograph support insulator, place a new pantograph support insulator, after placing, rotate the adjusting hole 28 counterclockwise to drive the adjusting screw 27 to retract, so that the diamond-shaped lifting frame 26 lowers the pantograph body slowly until the pantograph support insulator is in complete contact with the pantograph body. Install the pantograph support insulator mounting bolt one by one, and perform corresponding torque verification (at this time, the tool does not need to be taken away, and the tool can be used to prevent the pantograph body from falling during the pantograph support insulator installation process). When the pantograph support insulator is installed, rotate the locking device 13 counterclockwise to release the locked state between the first lengthening rod 12 and the second lengthening rod 14, and then use the locking device 13 to lock the first lengthening rod 12 and the second lengthening rod 14. At this time, the whole tool can be taken out from below the pantograph body.

[0049] The basic principles and main features of the utility model and the advantages of the utility model are shown and described. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the structural relationship and principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling for replacing pantograph support insulators in high-speed trains, characterized in that... , comprising: support frame (1) and base (2); The support frame (1) comprises a load-bearing platform (11), a first elongated rod (12) arranged at the bottom of the load-bearing platform, a hollow second elongated rod (14) and a locking device (13), the lower end of the first elongated rod (12) is slidably nested in the second elongated rod (14), and the locking device (13) is used to lock the relative position of the first elongated rod (12) and the second elongated rod (14); The base (2) comprises an elongated rod seat (25) and a lifting device arranged at the bottom of the elongated rod seat (25); the elongated rod seat (25) is a hollow cuboid structure, one end of the side panel of which is detachable, and the hollow cuboid structure is internally provided with a detachable holder (251) and a laser level (252); The outer wall of the first elongated rod (12) is further provided with a scale for accurate adjustment or correction of height; the surface of the load-bearing platform (11) is provided with a non-slip pad for increasing the friction when contacting the pantograph body to prevent sliding.

2. The tooling for replacing the pantograph insulator of a motor train unit according to claim 1, characterized in that The locking device (13) is a locking bolt arranged on the second elongated rod (14), which can press the surface of the first elongated rod (12) by tightening inward, thereby locking the relative position of the first elongated rod (12) and the second elongated rod (14).

3. The tooling for replacing the pantograph insulator of a motor train unit according to claim 1, characterized in that The lifting device comprises a rhombic lifting frame (26) of jack structure, an adjusting screw (27) passing through the middle of the rhombic lifting frame, an adjusting through hole (28) arranged on the adjusting screw, and a base support (29) arranged at the bottom of the rhombic lifting frame, the height of the rhombic lifting frame (26) is controlled by inserting an external rod into the adjusting through hole (28), under the action of external force, the external rod rotates and drives the adjusting screw (27) to control the height of the top of the rhombic lifting frame (26).

4. The tooling for replacing the pantograph insulator of a motor train unit according to claim 3, characterized in that : The bottom surface of the base support (29) is fixedly provided with a detachable anti-skid rubber pad (291), and the upper end surface of the anti-skid rubber pad (291) is provided with a groove (292) embedded with the contour of the base support.

5. The tooling for replacing the pantograph insulator of a motor train unit according to any one of claims 1-4, characterized in that : The support frame (1) as a whole adopts a square steel tube structure and is subjected to yellow baking paint treatment.

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