Multifunctional measuring tool for sliding plug door of motor train unit

Abstract

The utility model discloses a multifunctional measuring tool for a sliding plug door of a motor train unit. The multifunctional measuring tool comprises a handle, a pedal detection unit, a cam detection unit and a pneumatic lock detection unit, the handle is of a rectangular plate-shaped structure and is used for being connected with other detection units. The pedal detection unit comprises a screw rod fixed on the handle and a protective check ring sleeved on the screw rod, and the protective check ring is fixed on the screw rod through a nut; the pneumatic lock detection unit comprises a first feeler gauge, a second feeler gauge and a fixing piece, the first feeler gauge and the second feeler gauge are thin rulers with different thicknesses, various detection elements are connected into a whole, and the situation that too many tools are carried when the sliding plug door of the motor train unit is overhauled is avoided. A handle is connected with other detection units, a gap between a sliding plug door pedal and a limit switch, a technical gap between a sliding plug door limit switch cam and the limit switch and a gap between a sliding plug door upper and lower pneumatic lock cam and a door plate are measured respectively, and various detection elements are connected into a whole.

Description

Technical Field

[0001] The embodiments of the present utility model belong to the technical field of maintenance of plug doors, and more specifically, relate to a multifunctional measuring tool for plug doors of EMUs. Background Art

[0002] The plug door of an EMU is an important component of the door system of the EMU. The function of the plug door is to ensure the transportation function of passengers getting on and off the train during the operation of the EMU, and at the same time ensure the airtightness and safety of the EMU. Faults in the plug door of the EMU may lead to the following risks: 1. The upper and lower pneumatic lock rollers of the plug door are stuck with the door panel, resulting in the door being unable to open or close or making abnormal noises, causing the door to be unable to open and close normally; 2: When the limit switch of the plug door cannot be triggered normally, the door cannot receive the closing electrical signal, resulting in the door being unable to close, posing a risk of passengers falling, and also disconnecting the traction loop of the EMU, causing the EMU to stop abnormally and affecting the normal order of passenger trains; 3: When the limit switch of the plug door pedal fails, the plug door will turn red and the pedal will extend abnormally, also posing a risk of pinching or squeezing passengers and a risk of passengers falling. Therefore, it is necessary to regularly inspect the various dimensions of the plug door to ensure the safe operation of the EMU.

[0003] At present, most of the measuring tools on the market are customized according to the key dimensions that need to be maintained for the plug door to measure the corresponding dimensions. The Chinese patent with the publication number CN213600084U discloses a verticality measuring tool for a plug door, which is used to be arranged between the edge of the door leaf and the door frame of the plug door and includes a abutting part and a first measuring part. The abutting part is provided with at least two abutting planes, and the abutting planes are used to closely abut against the door frame. The abutting part maintains the measuring posture by the constraint of the door frame. The first measuring part is connected to the abutting part and extends towards the door leaf side. The first measuring part is provided with a first marking body and is used to display the distance between the edge of the door leaf and the door frame, and can solve the technical problem that the verticality of the door leaf of the plug door cannot be accurately measured.

[0004] However, the Chinese patent with the publication number CN213600084U cannot measure the gaps between the upper and lower pneumatic lock rollers of the plug door and the door panel, the limit switch of the plug door, and the limit switch of the plug door pedal. These problems still pose great potential safety hazards to the plug door of the EMU. Therefore, there is an urgent need for a multifunctional measuring tool for the plug door of the EMU to measure the parameters of the important maintenance points of the plug door. Summary of the Utility Model

[0005] In view of the above defects or improvement requirements of the prior art, the present utility model provides a multifunctional measuring tool for the plug doors of EMUs. By connecting other detection units with a handle, the gaps between the plug door pedal and the limit switch, the technical gap between the plug door limit switch cam and the limit switch, and the gaps between the upper and lower pneumatic lock cams of the plug door and the door panel are measured respectively. Integrating a variety of detection elements together, it avoids the problem of inconvenient carrying due to excessive tools when overhauling the plug doors of EMUs. Moreover, the measured sizes are all relatively small, and the tools used are also small and scattered, resulting in frequent loss of tools during the measurement process. And it will waste a lot of time to rummage through the tool kit for the corresponding measuring tools when changing the detection items. The present utility model solves the above problems and is convenient for storage.

[0006] To achieve the above object, a multifunctional measuring tool for the plug doors of EMUs is provided, including: a handle, a pedal detection unit, a cam detection unit, and a pneumatic lock detection unit;

[0007] The handle is in a rectangular plate-like structure and is used to connect other detection units;

[0008] The pedal detection unit includes a screw fixed on the handle, and a protective retaining ring sleeved on the screw and fixed on the screw with a nut;

[0009] The pneumatic lock detection unit includes a first feeler gauge, a second feeler gauge, and a fixing member. The first feeler gauge and the second feeler gauge are thin gauges with different thicknesses. Integrating a variety of detection elements together, it avoids the problem of excessive tools carried when overhauling the plug doors of EMUs.

[0010] Further, the nut and the screw are detachably connected through threads.

[0011] Further, the protective retaining ring is a hollow stepped frustum with both ends completely penetrated, and the diameter of the lower body part is larger than that of the upper body part;

[0012] The lower body part of the protective retaining ring is installed near the top of the handle.

[0013] Further, both the first feeler gauge and the second feeler gauge are wide at one end and narrow at the other end, and an installation hole is opened at the larger end, and they are installed on the front of the handle;

[0014] Both of their ends are circular arc-shaped, and chamfers are provided at the corners.

[0015] Further, the first feeler gauge and the second feeler gauge are stacked on the handle and fixed on the handle at their installation holes with a fixing member.

[0016] Further, the fixing member includes a fixing bolt, a flat washer, and a fixing nut;

[0017] The fixing bolt is fixed to the front of the handle. The mounting holes of the first feeler gauge and the second feeler gauge are sleeved on the fixing bolt. The fixing nut fixes the two feeler gauges thereon, and a flat washer is used between them to prevent loosening of the connection.

[0018] The first feeler gauge and the second feeler gauge rotate around the fixing member. When not in use, they are rotated to coincide with the handle. When in use, the first feeler gauge and the second feeler gauge are respectively rotated out of the width range of the handle.

[0019] Further, the pedal detection unit includes a screw rod fixed to the handle.

[0020] A protective retaining ring is also sleeved on the screw rod. It is fixed to the screw rod with a nut, and the nut and the screw rod are detachably connected through threads.

[0021] Further, the protective retaining ring is a hollow stepped frustum. The diameter of the lower body part is larger than that of the upper body part, and both ends penetrate completely.

[0022] The lower body part of the protective retaining ring is installed near the top of the handle.

[0023] Further, the pedal detection unit includes a rotating block and a cross internal hexagonal post.

[0024] The bottom of the rotating block is fixed to the back of the handle. The top of the rotating block rotates freely and is provided with damping. Each rotation angle is a multiple of 90°.

[0025] Further, the cross internal hexagonal post is in a cross shape structure, and the four rods are all segmented hexagonal cylinder structures.

[0026] The segmented hexagonal cylinder structure includes two hexagonal platforms, the circumscribed circle diameter of the front hexagonal platform is smaller than that of the rear one, and the circumscribed circle diameters of the four segmented hexagonal cylinder structures are all different.

[0027] Generally speaking, compared with the prior art by the above technical solutions conceived by the present utility model, the following beneficial effects can be obtained:

[0028] 1. A multifunctional measuring tool for the plug and pull door of the EMU of the present utility model uses a handle to connect other detection units, and respectively measures the gap between the plug and pull door pedal and the limit switch, the technical gap between the plug and pull door limit switch cam and the limit switch, and the gap between the upper and lower pneumatic lock cams of the plug and pull door and the door panel. It integrates a variety of detection elements, avoiding the problem of inconvenient carrying caused by too many tools when overhauling the plug and pull door of the EMU.

[0029] 2. A multifunctional measuring tooling for the plug door of EMU of the present utility model solves the problems that the measured dimensions are all relatively small, the tools used are also small and scattered, and tool loss often occurs during the measurement process, and it takes a lot of time to rummage through the tool kit to find the corresponding measuring tools when changing the detection items, and it is convenient for storage.

[0030] 3. A multifunctional measuring tooling for the plug door of EMU of the present utility model solves the current situation that the traditional internal hexagon column is too long and not easy to operate in the narrow door distribution cabinet during the measurement of the door limit switch of the EMU, reduces the operation time, improves the work efficiency, has a simple usage method, and is applicable to the measurement of similar door projects of multiple vehicle types on the Changke platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of a multifunctional measuring tooling for the plug door of EMU in Embodiment 1 of the present utility model;

[0032] Figure 2 It is another angle structural diagram of a multifunctional measuring tooling for the plug door of EMU in Embodiment 1 of the present utility model;

[0033] Figure 3 It is a schematic structural diagram of a multifunctional measuring tooling for the plug door of EMU in Embodiment 2 of the present utility model;

[0034] Figure 4 It is another angle structural diagram of a multifunctional measuring tooling for the plug door of EMU in Embodiment 2 of the present utility model.

[0035] In all the drawings, the same reference numerals represent the same technical features, specifically: 1 - handle, 2 - pedal detection unit, 201 - screw rod, 202 - nut, 203 - protective retaining ring, 3 - cam detection unit, 301 - large internal hexagon column, 302 - small internal hexagon column, 303 - rotating block, 304 - cross internal hexagon column, 4 - pneumatic lock detection unit, 401 - first feeler gauge, 402 - second feeler gauge, 403 - fixing piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Embodiment 1

[0038] As Figure 1, 2 As shown in 2 , an embodiment of the present utility model provides a multifunctional measuring tool for the plug door of a multiple unit train, including: a handle 1, a pedal detection unit 2, a cam detection unit 3, and a pneumatic lock detection unit 4. The handle 1 is used to connect other detection units to measure the gap between the plug door pedal and the limit switch, the technical gap between the plug door limit switch cam and the limit switch, and the gap between the upper and lower pneumatic lock cams of the plug door and the door panel respectively. By integrating multiple detection elements, it avoids the problem of inconvenient carrying due to excessive tools when overhauling the plug door of a multiple unit train. Moreover, the measured dimensions are all relatively small, and the tools used are also small and scattered, resulting in frequent loss of tools during the measurement process. Also, it takes a lot of time to rummage through the tool kit to find the corresponding measuring tool when changing the detection item. The present utility model solves the above problems and is convenient for storage.

[0039] The handle 1 is a rectangular plate-like structure with a length of 120 mm, a width of 60 mm, and a thickness of 5 mm, serving as the handheld part of this measuring device.

[0040] The pedal detection unit 2 includes a screw 201 fixed to the handle 1. The head of the screw 201 is fixed to the top of the handle 1 by welding. A protective retaining ring 203 is also sleeved on the screw 201 and is fixed to the screw 201 with a nut 202, and the nut 202 and the screw 201 are detachably connected by threads. The diameter of the screw 201 and the inner diameter of the nut 202 are both 17 mm. The protective retaining ring 203 is a hollow stepped frustum with both ends completely penetrating, a total length of 10 mm, an outer diameter of the upper body part of 18 mm, and the diameter of the lower body part is larger than that of the upper body part. The lower body part of the protective retaining ring 203 is installed close to the top of the handle 1.

[0041] When measuring the limit switch of the plug door pedal of a multiple unit train, remove the nut 202 and then disassemble the protective retaining ring 203, and sleeve the protective retaining ring 203 on the limit switch of the plug door pedal of the multiple unit train. Manually push the yellow pedal of the door up and down to trigger the stop iron to reach the limit switch of the pedal, triggering the limit switch of the pedal. At this time, the protective retaining ring 203 plays a role in preventing the limit switch of the pedal from being damaged by excessive extrusion. And at this time, the handle 1 is placed on the rubber pad of the pedal to meet the technical requirement that the plug door pedal can normally trigger the limit switch of the plug door pedal of the multiple unit train 5 mm in advance when retracted.

[0042] The cam detection unit 3 includes a large internal hexagonal post 301 and a small internal hexagonal post 302. The large internal hexagonal post 301 and the small internal hexagonal post 302 are both welded and fixed to the top of the handle 1. The large internal hexagonal post 301 is a hexagonal columnar structure with an outer circumferential diameter of 2.9 mm. The small internal hexagonal post 302 is also a hexagonal columnar structure with an outer circumferential diameter of 2.6 mm. The length range of the large internal hexagonal post 301 and the small internal hexagonal post 302 is 45 - 55 mm. The large internal hexagonal post 301 and the small internal hexagonal post 302 are arranged oppositely along their radial directions, and they are horizontally fixed along the width direction of the top of the handle 1, and are respectively arranged on both sides of the connection between the screw 201 and the handle 1.

[0043] When measuring the accuracy of the limit switch of the motorized multiple unit sliding plug door, it is necessary to measure the distance between the cam and the limit switch contact. The normal range of this distance is 2.6 - 2.9 mm. Therefore, the cam detection unit 3 is used to measure whether this distance is within the normal range. At this time, it is judged whether the gap meets the requirement of at least 2.6 mm by whether the small internal hexagonal post 302 can be placed in the gap between the cam and the limit switch contact, and it is judged whether the gap meets the requirement of at most 2.9 mm by whether the large internal hexagonal post 301 can be placed in the gap between the cam and the limit switch contact.

[0044] The pneumatic lock detection unit 4 includes a first feeler gauge 401, a second feeler gauge 402 and a fixing member 403. The first feeler gauge 401 and the second feeler gauge 402 are both thin gauges with one end wide and one end narrow, and an installation hole is opened at the larger end. They are installed on the front of the handle 1. Both ends are circular arc-shaped, and chamfers are provided at the corners to prevent unnecessary injury to personnel during measurement. The thickness of the first feeler gauge 401 is 0.5 mm, and the thickness of the second feeler gauge 402 is 1 mm. The first feeler gauge 401 and the second feeler gauge 402 are stacked on the handle 1 and fixed to the handle 1 at their installation holes by the fixing member 403. The fixing member 403 includes a fixing bolt, a flat washer and a fixing nut. The fixing bolt is fixed to the front of the handle 1. The installation holes of the first feeler gauge 401 and the second feeler gauge 402 are sleeved on the fixing bolt, and the fixing nut fixes the two feeler gauges on it. A flat washer is used between them to prevent loosening of the connection and to avoid damage to the surface of the first feeler gauge 401 or the second feeler gauge 402 during use. The first feeler gauge 401 and the second feeler gauge 402 can rotate around the fixing member 403. When not in use, they are rotated to coincide with the handle 1. When in use, the first feeler gauge 401 and the second feeler gauge 402 are respectively rotated out of the width range of the handle 1.

[0045] When measuring the gap between the upper and lower pneumatic lock cams of the plug door of the multiple unit train and the door panel, under the power supply state of the multiple unit train, the requirement for this gap is 0.5 - 1 mm. Therefore, it is judged whether the gap meets the requirement of the narrowest 0.5 mm by whether the first feeler gauge 401 with a thickness of 0.5 mm can be inserted into the gap, and it is judged whether the gap meets the requirement of the widest 1 mm by whether the second feeler gauge 402 with a thickness of 1 mm can be inserted into the gap.

[0046] Embodiment 2

[0047] As Figure 3 、 4 shown, other components of this embodiment are the same as those of Embodiment 1, the difference lies in that:

[0048] The cam detection unit 3 includes a rotating block 303 and a cross internal hexagonal column 304. The bottom of the rotating block 303 is fixed to the back of the handle 1. The top of the rotating block 303 rotates freely and is provided with damping, and the angle of each rotation is a multiple of 90°. The cross internal hexagonal column 304 is fixed to the top of the rotating block 303 and rotates synchronously with the rotating block 303. The cross internal hexagonal column 304 is in a cross shape structure, and all four rods are segmented hexagonal column structures. This segmented hexagonal column structure includes two hexagonal frustums, the circumscribed circle diameter of the front hexagonal frustum is smaller than that of the rear circumscribed circle diameter, and the circumscribed circle diameters of the four segmented hexagonal column structures are all different. When measuring the plug doors of multiple unit trains with different gap requirements, the cross internal hexagonal column 304 of the cam detection unit 3 is rotated to meet different measurement size requirements.

[0049] Preferably, the circumscribed circle diameter of the front hexagonal frustum of one of the segmented hexagonal column structures is 2.6 mm, and the circumscribed circle diameter of the rear hexagonal frustum is 2.9 mm. When in use, if the front hexagonal frustum can be inserted into the gap between the cam and the limit switch contact, while the rear hexagonal frustum cannot be inserted, it indicates that the gap between the cam and the limit switch contact meets the requirements.

[0050] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present invention, and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional measuring tool for EMU plug sliding door, characterized in that: include: A handle (1), a pedal detection unit (2), a cam detection unit (3) and a pneumatic lock detection unit (4); The handle (1) is a rectangular plate-shaped structure and is used to connect other detection units; The pedal detection unit (2) comprises a screw rod (201) fixed on the handle (1), and a protective retaining ring (203) sleeved on the screw rod (201) and fixed on the screw rod (201) by a nut (202); The pneumatic lock detection unit (4) comprises a first feeler gauge (401), a second feeler gauge (402) and a fixing member (403); the first feeler gauge (401) and the second feeler gauge (402) are thin gauges of different thicknesses, and multiple detection elements are connected in one body, thereby avoiding carrying too many tools when inspecting the EMU plug sliding door.

2. The multifunctional measuring tool for EMU plug sliding door according to claim 1, characterized in that: The nut (202) and the screw rod (201) are detachably connected via threads.

3. The multifunctional measuring tool for EMU plug sliding door according to claim 2, characterized in that: The protective retaining ring (203) is a hollow stepped truncated cone, both ends of which are completely penetrated, and the diameter of the lower platform part of the protective retaining ring (203) is greater than the diameter of the upper platform part; The lower body portion of the protective retaining ring (203) is installed close to the top of the handle (1).

4. The multifunctional measuring tool for EMU plug sliding door according to claim 3, characterized in that: The first feeler gauge (401) and the second feeler gauge (402) are both wide at one end and narrow at the other end, and a mounting hole is provided at the larger end, and are mounted on the front side of the handle (1); Both ends are arc-shaped, and chamfers are arranged at the corners.

5. The multifunctional measuring tool for EMU plug sliding door according to claim 4, characterized in that: The first feeler gauge (401) and the second feeler gauge (402) are stacked on the handle (1) and fixed to the handle (1) at their mounting holes using a fixing member (403).

6. The multifunctional measuring tool for EMU plug sliding door according to claim 5, characterized in that: The fixing member (403) comprises a fixing bolt, a flat washer and a fixing nut; The fixing bolt is fixed to the front side of the handle (1), the mounting holes of the first feeler gauge (401) and the second feeler gauge (402) are sleeved on the fixing bolt, the fixing nut fixes the two feeler gauges thereon, and a flat washer is provided between them to prevent the connection from loosening; The first feeler gauge (401) and the second feeler gauge (402) rotate around the fixing member (403). When not in use, they are rotated to overlap with the handle (1). When in use, the first feeler gauge (401) and the second feeler gauge (402) are respectively rotated out of the width range of the handle (1).

7. A multifunctional measuring tool for EMU plug sliding door according to any one of claims 3-6, characterized in that: The pedal detection unit (2) comprises a screw rod (201) fixed on the handle (1); The screw rod (201) is also covered with a protective retaining ring (203), which is fixed to the screw rod (201) by a nut (202), and the nut (202) and the screw rod (201) are detachably connected via threads.

8. A multifunctional measuring tool for EMU plug sliding door according to any one of claims 3-6, characterized in that: The pedal detection unit (2) comprises a rotating block (303) and a cross inner six-column (304); The bottom of the rotating block (303) is fixed to the back of the handle (1), and the top of the rotating block (303) is free to rotate and is provided with damping, and the angle of each rotation is a multiple of 90°.

9. The multifunctional measuring tool for EMU plug sliding door according to claim 8, characterized in that: The cross-internal six-column (304) is a cross structure, and the four rods are all segmented hexagonal column structures; The segmented hexagonal column structure comprises two upper and lower hexagonal platforms, the circumscribed circle diameter of the front hexagonal platform is smaller than the circumscribed circle diameter of the rear end, and the circumscribed circle diameters of the four segmented hexagonal column structures are all different.

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