Equipment for measuring size of end part of concrete switch tie

Abstract

The utility model discloses equipment for measuring the size of an upper row prestressed steel wire protective layer of a concrete switch tie, which ensures the accuracy of measured data by designing a positioning ruler at the front part of a ruler body and sleeving a digital display vernier on the ruler body in order to meet the distance measurement requirements of different switch tie models. Meanwhile, the upper measuring claw and the lower measuring claw are designed on the upper side and the lower side of the digital display vernier respectively, and the positioning ruler is matched with the two measuring claws, so that the effects that the size of the upper row prestressed steel wire protective layer of the concrete switch tie is accurately measured in batch production and the operation is convenient are achieved; the method is suitable for large-scale batch concrete switch tie production process quality control and inspection judgment.

Description

Technical Field

[0001] The utility model relates to the field of measuring tools, in particular to a device for measuring the size of a protective layer of a prestressed steel wire on a concrete switch sleeper. Background Art

[0002] Concrete switch sleepers are a combination of multiple concrete sleepers of different lengths. They carry turnouts and various railway accessories and are the basis for train operation. The size deviation of the upper prestressed steel wire protective layer of the switch sleeper is serious, which will seriously reduce the durability of the concrete switch sleeper, shorten its service life, and pose quality risks, and even affect the overall train operation system. The size detection of the upper prestressed steel wire protective layer is a basic method to determine the size of the switch sleeper wire position.

[0003] Therefore, the protective layer of the upper row of prestressed steel wires is an important point of quality inspection. The current detection method is measured by a steel ruler, but the detection method is not ideal. The reasons are: First, the measurement results are not accurate. The steel ruler measurement method cannot accurately measure the size of the protective layer of the upper row of prestressed steel wires; during the measurement process, since the two steel rulers are close to the upper surface and the end surface of the switch sleeper, the position of the measuring ruler needs to be determined by naked eye observation, and the operator's operation error is large. The operator must not only maintain accurate positioning, but also keep the two steel rulers as vertical as possible. The difficulty can be imagined. Second, the spacing between the upper and lower rows of prestressed steel wires of the switch sleeper cannot be measured. Third, the efficiency is low. The size of the prestressed steel wire of the switch sleeper includes the size detection of the protective layer of the upper row of prestressed steel wires and the size detection of the spacing between the upper and lower rows of prestressed steel wires. They need to be detected separately, one with a vernier caliper and the other with two steel rulers, which takes a lot of time. Therefore, it is necessary to design a new detection equipment and abandon the old detection equipment to ensure the accuracy and efficiency of the position size detection of the prestressed steel wire of the switch sleeper. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model proposes a device for measuring the size of the end of a concrete switch sleeper, which can realize the accurate measurement of the size of the protective layer of the prestressed steel wire on the concrete switch sleeper. Compared with the prior art of using two steel rulers for measurement, which only relies on visual observation to determine the position, the measurement result is more accurate and the operation is convenient.

[0005] The utility model discloses a device for measuring the size of the end of a concrete switch sleeper, comprising an upper measuring claw, a lower measuring claw, a positioning ruler, a ruler body and a digital display cursor.

[0006] Among them, a digital display vernier is slidably fitted on the ruler body; a positioning ruler is designed on the upper side of the front end of the ruler body; at the same time, an upper measuring claw and a lower measuring claw are respectively designed on the upper and lower sides of the front end of the digital display vernier shell.

[0007] The size of the protective layer of the upper row of prestressed steel wires can be measured by the cooperation between the positioning ruler, the lower measuring claw and the ruler body; and the spacing between the upper and lower rows of prestressed steel wires can be measured by the cooperation between the positioning teeth and the upper measuring claw. The advantages of the utility model are:

[0008] 1. Use a double-claw vernier caliper to measure the size of the protective layer of the upper row of prestressed steel wires, which ensures the integrity of the measuring equipment and makes it easier to determine the measuring position. It replaces the existing inspection drawbacks of inaccurate data caused by steel plate measurement, and the measurement results are more accurate. 2. The double-claw vernier caliper can measure the distance between the upper and lower rows of prestressed steel wires at the same time, greatly improving the measurement efficiency.

[0009] In view of the above problems, the utility model proposes a device for measuring the size of the protective layer of the prestressed steel wire on the concrete switch sleeper, which can realize the accurate measurement of the protective layer of the prestressed steel wire on the concrete switch sleeper.

[0010] The advantages of the utility model are:

[0011] 1. The utility model is a device for measuring the size of the protective layer of the prestressed steel wire on the concrete switch sleeper. The vertical lower measuring claw is designed to fit the end face and the upper surface of the switch sleeper at the same time. When measuring, it can be close to the end face and the upper surface of the switch sleeper, replacing the existing steel ruler measurement and causing the disadvantage of inaccurate data inspection, and the measurement result is more accurate.

[0012] 2. The utility model is a device for measuring the size of the protective layer of the upper prestressed steel wire in concrete. It is equipped with an upper measuring claw and can also detect the distance between the upper and lower prestressed steel wires of the switch sleeper, thus realizing two measuring functions in one device.

[0013] 3. The utility model is a device for measuring the size of the protective layer of the upper prestressed steel wires on concrete switch sleepers. The device has a zooming function, and the vernier ruler jaws can be moved to measure the distance between the protective layer of the upper prestressed steel wires and the upper and lower rows of prestressed steel wires on switch sleepers of different sizes, thereby meeting the measurement requirements of switch sleepers of different models (ballasted and ballastless).

[0014] 4. The utility model is a device for measuring the size of the protective layer of the prestressed steel wire on the concrete switch sleeper. The measurement result can be automatically displayed through the digital display device, realizing the operation mode of one person measuring and accurate reading, which greatly improves the overall efficiency and labor cost.

[0015] 5. The utility model is a device for measuring the size of the protective layer of the prestressed steel wire on the concrete switch sleeper. It is an integrated measuring tool, which replaces the existing measurement method of using two steel rulers and is easy to carry and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the device used for measuring the end size of a concrete switch tie in the utility model;

[0017] Figure 2 This is a schematic diagram of the method for measuring the size of the protective layer of the upper row of prestressed steel wires for the utility model equipment;

[0018] Figure 3 This is a schematic diagram of a method for measuring the spacing between upper and lower rows of prestressed steel wires using the utility model equipment.

[0019] In the figure:

[0020] 1- Ruler body 4 2- Upper measuring claw 3- Lower measuring claw

[0021] 4-Digital display cursor 5-Fastening screw 6-Positioning ruler DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model is a device for measuring the end size of a concrete switch tie, which is a vernier caliper with a vertical angle, comprising a ruler body 1, an upper measuring claw 2, a lower measuring claw 3, a digital display vernier 4, a fastening screw 5 and a positioning ruler 6. Figure 1 shown.

[0024] The ruler body 1 is a straight ruler, and a scale is designed along the length of the ruler, and the scale 0 is located at the front end of the ruler body 1, and the scale unit is mm. A positioning ruler 6 is designed on the upper side of the front end of the ruler body 1.

[0025] The bottom end of the positioning ruler 6 is connected to the side of the ruler body 1 to form an integrated structure; the front and rear side surfaces of the positioning ruler 6 are both planes perpendicular to the long direction of the ruler body 1, and the front and rear side surfaces are flush with the front end surface of the ruler body 1; the front and rear side surfaces of the positioning ruler 6 serve as positioning surfaces of the ruler body 1, which are used to position the ruler body 1 during the measurement process.

[0026] The digital display cursor 4 is slidably mounted on the ruler body 1, can slide along the ruler body 1, and display the sliding distance on the digital display screen of the digital display cursor 4; a screw hole is opened on one side of the digital display cursor 4, and the inner thread of the screw hole is matched to install a fastening screw 5, and when the digital display cursor 4 reaches the measuring position, it is fixed by the fastening screw 5. The upper and lower sides of the front end of the shell of the digital display cursor 4 are respectively designed with an upper measuring claw 2 and a lower measuring claw 3.

[0027] The structure of the upper measuring claw 2 and the lower measuring claw 3 is the same as that of the positioning ruler 6. The bottom end of the upper measuring claw 2 is fixedly connected to the side wall of the housing of the digital display cursor 4, the front side thereof is opposite to and parallel to the rear side of the positioning ruler 6, and the top end is flush with the top end of the positioning ruler 6. The bottom end of the lower measuring claw 3 is fixedly connected to the side wall of the housing of the digital display cursor 4, and is symmetrically arranged with the upper measuring claw 2. At the same time, the front sides of the upper measuring claw 2 and the lower measuring claw 3 are both flush with the front side of the housing of the digital display cursor 4.

[0028] The above-mentioned vernier caliper with a vertical angle can be used to accurately measure the protective layer of the upper prestressed steel wires of the concrete switch sleeper, including the size of the protective layer of the upper prestressed steel wires and the spacing between the upper and lower prestressed steel wires, in the following way:

[0029] To measure the size of the upper prestressed steel wire protective layer (the thickness of the concrete on the upper part of the prestressed steel wire), first move the digital display cursor 4 to the left to the limit position. At this time, the front side of the upper measuring claw 1 fits the rear side of the positioning ruler 6. At this time, press the zeroing key of the digital display cursor 4 to return to zero. Then start measuring the size of the upper prestressed steel wire protective layer. Figure 2 As shown, when measuring, first, fit the lower side of the ruler body 1 with the end face of the switch sleeper to achieve the lateral positioning between the equipment and the switch sleeper; further, move the ruler body 1 to make the front positioning surface of the positioning ruler 6 fit with the surface of the upper row of prestressed steel wires. At this time, it is necessary to ensure that the plane where the positioning ruler 6 is located and the horizontal plane of the contact position between the positioning ruler 6 and the steel wire are in a vertical relationship for measurement, so that the size of the protective layer of the upper row of prestressed steel wires can be obtained; but because the steel wire is round, and the steel wire and the end face of the switch sleeper are not exactly at a 90-degree angle, there is a certain angle deviation, so it is not suitable to operate if the vertical relationship between the two is guaranteed. Therefore, the utility model designs the lower measuring claw 3 and moves the front side of the lower measuring claw 3 to fit with the upper surface of the switch sleeper, so that the front side of the lower measuring claw 3 and the upper surface of the switch sleeper are parallel, combined with the parallel relationship between the lower side of the ruler body 1 and the end face of the switch sleeper, and the vertical relationship between the lower measuring claw 3 and the ruler body 1, to achieve the vertical relationship between the plane where the positioning tooth 7 is located and the horizontal plane of the contact position between the positioning ruler 6 and the steel wire, thereby ensuring the accuracy of the measurement of the size of the protective layer of the upper row of prestressed steel wires on the switch sleeper. At this time, the number displayed on the display screen of the digital display cursor 4 is read, and the read number is further added to the width value of the positioning ruler 6, which is the size value of the protective layer of the upper row of prestressed steel wires on the switch sleeper.

[0030] When measuring the spacing between the upper and lower rows of prestressed steel wires, the digital display cursor 4 is reset to zero. Figure 3 As shown, the upper measuring claw 2 is moved to a distance with the positioning ruler 6 that is greater than the distance between the upper and lower rows of prestressed steel wires, and the rear side of the positioning ruler 6 is further attached to the lower surface of the lower row of prestressed steel wires, and the upper measuring claw 2 is moved until the front side of the upper measuring claw 1 is attached to the upper surface of the upper row of prestressed steel wires, so that the distance between the upper and lower rows of prestressed steel wires of the switch sleeper can be detected. At this time, the displayed number on the display screen of the digital display cursor 4 is the distance value between the upper and lower rows of prestressed steel wires of the switch sleeper.

Claims

1. Equipment for measuring the end dimensions of concrete switch sleepers, characterized in that: It includes upper measuring jaw, lower measuring jaw, positioning ruler, ruler body and digital display vernier; Among them, a positioning ruler is designed on the upper side of the front end of the ruler body; Furthermore, a digital display cursor is slidably mounted on the ruler body; Furthermore, an upper measuring claw and a lower measuring claw are respectively designed on the upper and lower sides of the front end of the digital display cursor housing.

2. The device for measuring the end dimensions of a concrete switch tie according to claim 1, characterized in that: The front and rear sides of the positioning ruler are both planes perpendicular to the length of the ruler body, and the front and rear sides are flush with the front end face of the ruler body; the structure of the upper measuring jaws and the lower measuring jaws is the same as that of the positioning ruler; the front side of the upper measuring jaws is opposite to and parallel to the rear side of the positioning ruler; the lower measuring jaws and the upper measuring jaws are symmetrically arranged; at the same time, the front sides of the upper measuring jaws and the lower measuring jaws are flush with the front side of the housing of the digital display cursor.

3. The device for measuring the end dimensions of a concrete switch tie according to claim 1, characterized in that: A screw hole is provided on one side of the housing of the digital display cursor, and the inner thread of the screw hole is matched with the installation of the fastening screw.

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