A contact net hanging string precision measuring instrument

Abstract

The utility model discloses a contact net hanging line precision measuring instrument relates to the technical field of contact net hanging line detection, including square tube, the inside of square tube is provided with digital display depth gauge, digital display depth gauge is provided with the mounting block away from one end of square tube, and one side of mounting block is provided with the measuring section of can dismantle, one end of measuring section is provided with magnetic attraction subassembly. The utility model discloses design structure is reasonable, it is through with the second recess of measuring section end part and aligns the contact line of needing the measuring position, and the first recess of square tube end part aligns the bearing cable right above the contact line, directly reads out the measured data, and the simple structure is convenient to use, compares to the current and saves a large amount of time, and simultaneously compares to the current and is smaller in self weight volume, lighter in weight, more convenient to carry and operate, and this greatly improves the efficiency of hanging line replacement measurement, thereby solve the current and the problem of inconvenient to carry of long operation time.

Description

Technical Field

[0001] This utility model relates to the technical field of contact wire dropper detection, specifically a contact wire dropper precision measuring instrument. Background Technology

[0002] The overhead contact system is a special type of power transmission line that runs above railway lines to provide electrical energy to electric locomotives or high-speed trains. It mainly consists of a contact wire, catenary, droppers, support devices, and additional conductors. It provides a continuous and stable supply of electrical energy to moving trains. The droppers are short conductors or stranded wires suspended between the catenary and the contact wire. Their ends are fixed to the catenary and the contact wire respectively using special clamps or heart-shaped rings to ensure continuous and reliable power transmission.

[0003] When replacing droppers on the existing overhead contact system of a high-speed railway line, the contact wire height and positioner standards must remain unchanged. The original method involved using a contact wire laser measuring instrument (DJJ-8) to measure the bearing height at each dropper point and then calculating the dropper length. However, tests showed that using the traditional contact wire laser measuring instrument (DJJ-8) to measure the data for the selected five anchor sections took 178 minutes. Furthermore, the calculation not only required determining the new dropper length but also the spacing between each new dropper, which was quite cumbersome. Additionally, the contact wire laser measuring instrument (DJJ-8) weighs 4.7 kg, making it heavy and inconvenient to carry. Therefore, we have provided a contact wire dropper precision measuring instrument to solve these problems. Utility Model Content

[0004] 1) Technical problems to be solved

[0005] This utility model proposes a contact wire dropper precision measuring instrument, which solves the problems of excessively long operation time and inconvenience in carrying by setting up components such as square tubes and digital display depth gauges.

[0006] (ii) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a contact wire dropper precision measuring instrument, comprising a square tube, wherein a digital depth gauge is disposed inside the square tube, and a mounting block is disposed at the end of the digital depth gauge away from the square tube, and a detachable measuring section is disposed on one side of the mounting block; a magnetic suction component is disposed at one end of the measuring section, which enables the measuring section to be securely connected to the mounting block by magnetic attraction; a first groove is formed at the end of the square tube, and a second groove is formed at the end of the measuring section.

[0008] Furthermore, the digital depth gauge includes a digital display and a measuring rod. One end of the digital display is fixedly installed to the square tube, and the inner wall of the digital display is slidably connected to the measuring rod. The measuring rod is located inside the square tube, and one end of the measuring rod is fixedly connected to the mounting block.

[0009] Furthermore, the magnetic suction assembly includes a magnetic block, the end of which is fixedly connected to the measuring section, and a metal block is fixedly installed on the inner wall of the mounting block.

[0010] Furthermore, a first fixing frame is fixedly installed at the end of the square tube away from the first groove, and the inner wall of the first fixing frame is fixedly connected to the digital display.

[0011] Furthermore, the locking component includes a second fixing frame, the inner wall of which is fixedly connected to the end of the digital display away from the first fixing frame, and a fixing member is slidably connected to the inner wall of the second fixing frame, the outer surface of which is threadedly connected to the mounting block.

[0012] Furthermore, a third fixing frame is fixedly connected to the outer surface of the mounting block, and the inner wall of the third fixing frame is slidably connected to the measuring section.

[0013] (iii) Beneficial effects:

[0014] Compared with existing technologies, this contact wire dropper precision measuring instrument has the following advantages:

[0015] I. This contact wire dropper precision measuring instrument, through the setting of components such as a square tube and a digital display depth gauge, aligns the second groove at the end of the measuring section with the contact wire at the location to be measured, and the first groove at the end of the square tube with the catenary wire directly above the contact wire, directly reading the measurement data. It has a simple structure and is easy to use, saving a lot of time compared to existing methods. At the same time, it is smaller and lighter than existing methods, making it more convenient to carry and operate. This greatly improves the efficiency of dropper replacement measurement, thus solving the problems of excessive operation time and inconvenience of carrying existing methods.

[0016] II. This contact wire dropper precision measuring instrument, by setting up components such as magnetic suction components and measuring sections, selects appropriate measuring sections from various specifications and lengths according to different measurement environments and needs, and installs them on the mounting block through the magnetic suction components. The mutual attraction between the magnetic block and the metal block makes the measuring section fit tightly with the end of the mounting block to form different measurement ranges to adapt to various measurement environments. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the measuring section in this utility model;

[0020] Figure 3 This is a cross-sectional view of the square tube of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the digital depth gauge in this utility model;

[0022] Figure 5 This is a cross-sectional view of the mounting block in this utility model.

[0023] In the diagram: 1. Square tube; 2. Digital depth gauge; 201. Digital display; 202. Measuring rod; 3. Mounting block; 4. Measuring section; 5. First groove; 6. Second groove; 7. Magnetic suction assembly; 701. Magnetic block; 702. Metal block; 8. First fixing frame; 9. Locking assembly; 901. Second fixing frame; 902. Fixing piece; 10. Third fixing frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The digital depth gauge 2 in this utility model is a common distance measuring instrument in the prior art, and this application will not elaborate on its model or internal structure.

[0026] like Figure 1-5As shown, this utility model provides a technical solution: a contact wire dropper precision measuring instrument, including a square tube 1, a digital display depth gauge 2 disposed inside the square tube 1, a mounting block 3 disposed at the end of the digital display depth gauge 2 away from the square tube 1, and a detachable measuring section 4 disposed on one side of the mounting block 3; a magnetic suction component 7 disposed at one end of the measuring section 4, which enables the measuring section 4 to be securely connected to the mounting block 3 by magnetic attraction; a first groove 5 is formed at the end of the square tube 1, a second groove 6 is formed at the end of the measuring section 4, and a sliding groove is also formed inside the square tube 1; in order to provide a space for the digital display depth gauge 2, in use, the digital display depth gauge 2 is first opened to ensure that the display is zero, and the measuring section is then placed inside the square tube 1. The second groove 6 at the end of the square tube 1 is aligned with the contact line at the position to be measured, and the first groove 5 at the end of the square tube 1 is aligned with the catenary above the contact line. The two are separated and opened so that the digital depth gauge 2 measures the total length and displays it. The display value is observed and recorded, and the measurement data is collected and calculated to obtain the distance between the contact line and the catenary, thereby obtaining the length of the suspension. The first groove 5 and the second groove 6 are used to facilitate stable contact between the two ends of the device and the contact line and catenary. The length of the square tube 1 is a fixed standard length. The measuring section 4 is easily replaced by the magnetic suction assembly 7. The measuring section 4 has various specifications with different lengths, which can form different measurement ranges to adapt to various measurement environments.

[0027] The digital depth gauge 2 includes a digital display 201 and a measuring rod 202. One end of the digital display 201 is fixedly installed to the square tube 1, and the inner wall of the digital display 201 is slidably connected to the measuring rod 202. The measuring rod 202 is located inside the square tube 1, and one end of the measuring rod 202 is fixedly connected to the mounting block 3. When the square tube 1 and the mounting block 3 move away from each other, the square tube 1 drives the digital display 201 to move synchronously, and the mounting block 3 drives the measuring rod 202 to move synchronously, thereby causing the digital display 201 to slide on the measuring rod 202, causing the moving grid and the fixed grid to have relative displacement, which leads to the internal sensor generating an electrical signal change. This change is calculated into displacement data, and the digital display 201 displays the data, that is, the sliding distance. The length of the square tube 1 and the measuring section 4 and other components are added to obtain the measurement value.

[0028] The magnetic attraction assembly 7 includes a magnetic block 701, the end of which is fixedly connected to the measuring section 4. A metal block 702 is fixedly installed on the inner wall of the mounting block 3. The metal block 702 is made of iron and can attract the magnetic block 701, thereby making the measuring section 4 and the end of the mounting block 3 stick together tightly.

[0029] A first fixing frame 8 is fixedly installed at the end of the square tube 1 away from the first groove 5. The inner wall of the first fixing frame 8 is fixedly connected to the digital display 201. The first fixing frame 8 strengthens the fixing effect between the square tube 1 and the digital display 201, ensuring that the two are on the same straight line and avoiding tilting.

[0030] The locking component 9 includes a second fixing frame 901. The inner wall of the second fixing frame 901 is fixedly connected to the end of the digital display 201 away from the first fixing frame 8. A fixing member 902 is slidably connected to the inner wall of the second fixing frame 901. The outer surface of the fixing member 902 is threadedly connected to the mounting block 3. When not in use, the mounting block 3 and the digital display 201 can be put together. At this time, the digital display 201 is at zero. The fixing member 902 passes through the second fixing frame 901 and is inserted into the interior of the mounting block 3 to fix the two together and prevent them from opening on their own when not in use.

[0031] A third fixing frame 10 is fixedly connected to the outer surface of the mounting block 3. The inner wall of the third fixing frame 10 is slidably connected to the measuring section 4. The third fixing frame 10 is used to limit the measuring section 4 so that the measuring section 4 cannot tilt at the connection point with the mounting block 3, so as to ensure that the measuring section 4 and the whole are in a straight line.

[0032] Working principle: Before use, turn on the digital depth gauge 2 and ensure that the digital display 201 is zeroed to prepare for accurate measurement. According to different measurement environments and needs, select the appropriate measuring section 4 from various specifications and lengths through the magnetic suction component 7 and install it on the mounting block 3. The mutual attraction between the magnetic block 701 and the metal block 702 makes the measuring section 4 fit tightly against the end of the mounting block 3. The third fixing frame 10 limits the connection between the square tube 1 and the measuring section 4 to ensure that the measuring section 4 is in the same straight line as the whole, thus ensuring measurement accuracy.

[0033] Align the second groove 6 at the end of the measuring section 4 with the contact line at the location to be measured, and align the first groove 5 at the end of the square tube 1 with the catenary directly above the contact line. The design of the first groove 5 and the second groove 6 helps the two ends of the device to make stable contact with the contact line and the catenary, improving measurement stability. Separate the square tube 1 and the mounting block 3 along the direction of the catenary and the contact line. The square tube 1 drives the digital display 201 to move synchronously, and the mounting block 3 drives the measuring rod 202 to move synchronously. At this time, the digital display 201 slides on the measuring rod 202, and the digital display 201 displays the displacement data. This data is the sliding distance between the square tube 1 and the mounting block 3. Adding the fixed standard length of the square tube 1 and the mounting block 3 and the length of the selected measuring section 4, the distance between the catenary and the contact line, which is the length of the suspension wire, can be obtained. The staff observes and records the value of the digital display 201 at this time, collects the measurement data, and completes the calculation.

[0034] After the measurement is completed, if it is necessary to store the instrument, the mounting block 3 and the digital display 201 can be combined. At this time, the digital display 201 is reset to zero again, and the fixing piece 902 in the locking component 9 passes through the second fixing frame 901 and is inserted into the mounting block 3, thereby fixing the mounting block 3 and the digital display 201, preventing the instrument from opening on its own when not in use, protecting the instrument and maintaining its measurement accuracy.

[0035] This device has a simple structure and is easy to use. Experiments showed that it took 118 minutes to measure the data of 5 selected anchor sections. Moreover, it does not require recalculation of the new dropper spacing; it can be replaced in place. Compared with existing devices, it saves a lot of time. In addition, this device weighs 1.61kg, which is smaller and lighter than the DJJ-8 contact wire laser measuring instrument (4.7kg), making it more convenient to carry and operate. This greatly improves the efficiency of dropper replacement measurement and makes it easy to carry.

[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A contact wire dropper precision measuring instrument, comprising a square tube (1), characterized in that: The square tube (1) is provided with a digital depth gauge (2) inside. The end of the digital depth gauge (2) away from the square tube (1) is provided with a mounting block (3). A detachable measuring section (4) is provided on one side of the mounting block (3). A magnetic suction component (7) is provided at one end of the measuring section (4), which enables the measuring section (4) to be firmly connected to the mounting block (3) by magnetic attraction; The square tube (1) has a first groove (5) at its end, and the measuring section (4) has a second groove (6) at its end.

2. The contact wire dropper precision measuring instrument according to claim 1, characterized in that: The digital depth gauge (2) includes a digital display (201) and a measuring rod (202). One end of the digital display (201) is fixedly installed with the square tube (1). The inner wall of the digital display (201) is slidably connected with the measuring rod (202). The measuring rod (202) is located inside the square tube (1) and one end of the measuring rod (202) is fixedly connected with the mounting block (3).

3. The contact wire dropper precision measuring instrument according to claim 1, characterized in that: The magnetic suction assembly (7) includes a magnetic block (701), the end of which is fixedly connected to the measuring section (4), and a metal block (702) is fixedly installed on the inner wall of the mounting block (3).

4. The contact wire dropper precision measuring instrument according to claim 2, characterized in that: The square tube (1) is fixedly mounted with a first fixing frame (8) at the end away from the first groove (5), and the inner wall of the first fixing frame (8) is fixedly connected to the digital display (201).

5. The contact wire dropper precision measuring instrument according to claim 4, characterized in that: The locking component (9) includes a second fixing frame (901), the inner wall of which is fixedly connected to the end of the digital display (201) away from the first fixing frame (8), and a fastener (902) is slidably connected to the inner wall of the second fixing frame (901), the outer surface of which is threadedly connected to the mounting block (3).

6. The contact wire dropper precision measuring instrument according to claim 3, characterized in that: The outer surface of the mounting block (3) is fixedly connected to a third fixing frame (10), and the inner wall of the third fixing frame (10) is slidably connected to the measuring section (4).

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