Steel rail structure size detection tool
By designing a tooling fixture for inspecting the dimensions of rail structures, and using connecting fixtures and positioning clamps to fix digital calipers and digital height gauges onto the rails, the problem of inaccuracy in traditional manual measurement is solved, achieving higher measurement accuracy and tool protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU PUBLIC WORKS SECTION OF CHINA RAILWAY SHANGHAI BUREAU GRP CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-10
AI Technical Summary
When using traditional handheld measuring tools to measure rail dimensions, inaccuracies can easily occur due to hand tremors or other reasons, affecting measurement accuracy.
A tooling for measuring the dimensions of rail structures was designed. A digital caliper and a digital height gauge are fixed on the rail by connecting the tooling. Precise positioning is achieved using a positioning clamp and guide rail system. The measuring tools are protected by a pressure plate and a protective pad to ensure stable measurement.
It improves the accuracy of rail inspection, reduces damage to measuring tools, and enhances the stability and accuracy of measurements.
Smart Images

Figure CN224108734U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rail detection technical field, concretely is a kind of rail structure size detection frock. BACKGROUND
[0002] Rail is the important component of railway track, and its structure size mainly includes the cross section shape, length, width, height and weight of rail, etc., in order to ensure the safe use of rail structure, the size of rail structure needs to be detected, mainly including the size measurement of rail head rail waist and rail bottom slope;
[0003] But the traditional rail size side measurement is mainly using measuring tool (mainly including digital caliper, digital height gauge) to carry out size measurement after positioning calibration by artificial hand, and the measuring tool is inclined or moved due to hand shake or other reasons in the measurement process, so that the measurement is not accurate, secondly, the positioning of hand-held measuring tool is not accurate enough, which will also affect the accuracy of subsequent measurement, therefore, we propose a kind of rail structure size detection frock to solve the above problems. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of rail structure size detection frock to solve the problems raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of rail structure size detection frock, including digital caliper and digital height gauge, connecting frock is equipped between the digital caliper and digital height gauge, the digital caliper is used for the detection of rail head, rail waist size, the digital height gauge is used for the detection of rail bottom size, the connecting frock includes positioning clamp, the positioning clamp includes first clamping block and second clamping block, the first clamping block and second clamping block are movably connected in rail head position, first vertical frame is fixedly installed on the side of first clamping block close to digital caliper, vertical linear guide rail is fixedly installed on the first vertical frame, first horizontal frame is fixedly installed on the mobile end of vertical linear guide rail, first horizontal linear guide rail is fixedly installed on the first horizontal frame, the digital caliper is fixedly installed on the mobile end of first horizontal linear guide rail, second horizontal frame is fixedly installed on the side of first clamping block close to digital height gauge, second horizontal linear guide rail is fixedly installed on the second horizontal frame, second vertical frame is fixedly installed on the mobile end of second horizontal linear guide rail, the digital height gauge is fixedly installed on the second vertical frame, positioning rod is equipped on the side of first horizontal frame close to positioning clamp.
[0006] Preferably, one end of the positioning rod is fixedly installed with a rotating shaft, and the rotating shaft is rotatably installed on the side of the first horizontal frame close to the positioning clamp.
[0007] Preferably, the second clamp block is provided with a mounting clamping block on the side top close to the first clamp block, and the mounting clamping block is movably clamped on the top of the first clamp block.
[0008] Preferably, the second clamp block is provided with a positioning horizontal shaft fixedly mounted on the side top close to the first clamp block, and the positioning horizontal shaft is movably clamped on the top of the first clamp block.
[0009] Preferably, the first clamp block is provided with a mounting sleeve fixedly mounted on the side top close to the mounting clamping block, a mounting pin movably mounted in the middle of the mounting sleeve, and a clamping convex fixedly mounted on the end of the mounting pin and movably clamped on the corresponding mounting clamping block.
[0010] Preferably, the first clamp block is provided with a rotating seat fixedly mounted on the side middle close to the mounting sleeve, a cam rotatably mounted between the rotating seats, a pressing pin movably clamped on the side close to the cam, an upper surface of the pressing pin in contact with the cam, a spring groove provided on the side close to the pressing pin, a reset spring provided in the spring groove, a top end of the reset spring in contact with the head of the pressing pin, a pressure disc threadedly mounted on the bottom end of the pressing pin, and a protective pad fixedly mounted on the lower surface of the pressure disc and in contact with the upper surface of the steel rail.
[0011] Preferably, the shaft end of the cam is provided with a handle.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] 1. By setting the connecting tool, the digital caliper and the digital height gauge are connected together, and the digital caliper and the digital height gauge are stably and conveniently fixed on the steel rail detection position, so that the size of the rail head and the rail waist is accurately detected by using the digital caliper, the rail bottom size is accurately detected by using the digital height gauge, and the steel rail detection accuracy is improved.
[0014] 2. By setting the pressure disc and the protective pad, the protective pad between the pressure disc and the upper surface of the steel rail is pressed, the damage of the pressure disc and the pressing pin is reduced, the use effect of the whole tool is improved, and the pressure disc is conveniently disassembled and replaced. DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor.
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] Figure 2 This is a schematic diagram showing the structural connection of the digital caliper, digital height gauge, and connecting fixture in this utility model.
[0018] Figure 3 This is a schematic diagram of the positioning fixture in this utility model.
[0019] Figure 4 This is a schematic diagram of the partial structural connection of the positioning clamp in this utility model.
[0020] Figure 5 This is a schematic diagram showing the structural connection between the pressure pin and the pressure plate in this utility model.
[0021] Figure 6 This is a schematic diagram of the structure of the digital caliper of this utility model.
[0022] Figure 7 This is a schematic diagram of the digital height gauge in this utility model.
[0023] Figure 8 This is a schematic diagram of the structural connection between the first crossbeam and the positioning rod in this utility model.
[0024] In the diagram: 1. Digital caliper; 2. Digital height gauge; 3. Connecting fixture; 4. Positioning clamp; 5. First longitudinal frame; 51. Longitudinal linear guide rail; 52. First transverse frame; 53. First transverse linear guide rail; 6. Second transverse frame; 61. Second transverse linear guide rail; 62. Second longitudinal frame; 7. Positioning rod; 71. Rotating shaft; 41. First clamping block; 42. Second clamping block; 421. Mounting block; 43. Positioning transverse shaft; 44. Mounting sleeve; 441. Mounting pin; 442. Locking protrusion; 45. Rotating seat; 451. Handle; 46. Cam; 47. Pressing pin; 471. Pressure plate; 472. Protective pad; 401. Spring groove; 48. Return spring. Detailed Implementation
[0025] 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.
[0026] Example: Figures 1-8 As shown, this utility model provides a tooling for detecting the dimensions of a rail structure, including a digital caliper 1 and a digital height gauge 2. A connecting tooling 3 is provided between the digital caliper 1 and the digital height gauge 2. The digital caliper 1 is used to detect the dimensions of the rail head and rail web, and the digital height gauge 2 is used to detect the dimensions of the rail base.
[0027] The connecting tool 3 comprises a positioning clamp 4, the positioning clamp 4 comprises a first clamp block 41 and a second clamp block 42, the first clamp block 41 and the second clamp block 42 are movably clamped at the rail head position, the first longitudinal frame 5 is fixedly installed on one side of the first clamp block 41 close to the digital caliper 1, the longitudinal linear guide rail 51 is fixedly installed on the first longitudinal frame 5, the moving end of the longitudinal linear guide rail 51 is fixedly installed with the first transverse frame 52, the first transverse linear guide rail 53 is fixedly installed on the first transverse frame 52, the digital caliper 1 is fixedly installed at the moving end of the first transverse linear guide rail 53, the longitudinal linear guide rail 51 is used to control the longitudinal movement of the digital caliper 1, and the first transverse linear guide rail 53 is used to control the transverse movement of the digital caliper 1.
[0028] The second transverse linear guide rail 61 is fixedly installed on the second transverse frame 6, the moving end of the second transverse linear guide rail 61 is fixedly installed with the second longitudinal frame 62, and the digital height gauge 2 is fixedly installed on the second longitudinal frame 62.
[0029] The first transverse frame 52 is provided with a positioning rod 7 on one side close to the positioning clamp 4; one end of the positioning rod 7 is fixedly installed with a rotating shaft 71, the rotating shaft 71 is rotatably installed on one side of the first transverse frame 52 close to the positioning clamp 4, and the positioning rod 7 is convenient to rotate on the first transverse frame 52.
[0030] The second clamp block 42 is provided with a mounting clamping block 421 on one side close to the top of the first clamp block 41, and the mounting clamping block 421 is movably clamped on the top of the first clamp block 41; the positioning transverse shaft 43 is fixedly installed on one side close to the top of the first clamp block 41 of the second clamp block 42, and the positioning transverse shaft 43 is movably clamped on the top of the first clamp block 41, so that the first clamp block 41 and the second clamp block 42 are movably clamped at the rail head position, and the digital caliper 1 and the digital height gauge 2 are positioned on the steel rail.
[0031] The mounting sleeve 44 is movably installed in the middle of the mounting sleeve 44, the mounting pin 441 is movably installed in the middle of the mounting sleeve 44, the clamping convex 442 is fixedly installed on the end of the mounting pin 441, the clamping convex 442 is movably clamped on the corresponding mounting clamping block 421, and the first clamp block 41 and the second clamp block 42 are fixed.
[0032] The top end of the first clamping block 41 is fixedly installed with rotating seats 45 in the middle of one side of the mounting sleeve 44, rotating cams 46 are rotatably installed between the rotating seats 45, the side of the first clamping block 41 close to the rotating cams 46 is movably clamped with pressing pins 47, the upper surfaces of the pressing pins 47 are in contact with the rotating cams 46, the side of the first clamping block 41 close to the pressing pins 47 is provided with spring grooves 401, the spring grooves 401 are provided with return springs 48, the top end of the return springs 48 is in contact with the head of the pressing pin 47, the bottom end of the pressing pin 47 is screwedly installed with a pressing disc 471, the lower surface of the pressing disc 471 is fixedly installed with a protective pad 472, the lower surface of the protective pad 472 is in contact with the upper surface of the steel rail; the shaft end of the rotating cam 46 is fixedly installed with a handle 451, after the first clamping block 41 and the second clamping block 42 are movably clamped at the rail head position, the handle 451 is manually rotated to drive the rotating cam 46 to rotate, the protruding position of the rotating cam 46 presses the pressing pin 47 to control the pressing disc 471 and the protective pad 472 to descend, the return spring 48 is extruded and shrunk, until the lower surface of the protective pad 472 is in contact with the upper surface of the steel rail, the first clamping block 41 and the second clamping block 42 are fixed at the position of the steel rail and lift up the first clamping block 41 and the second clamping block 42, so that the digital caliper 1 and the digital height gauge 2 are stably and secondarily fixed at the steel rail detection position, which is convenient for subsequent accurate detection of the size of the rail head and the rail waist by using the digital caliper 1 and accurate detection of the size of the rail bottom by using the digital height gauge 2.
[0033] Working principle: when detecting, the first clamping block 41 and the second clamping block 42 are separated, the first clamping block 41 is sleeved on the steel rail detection position from above, the second clamping block 42 is closed with the rail head lower jaw as the reference surface, the installation pins 441 are inserted, the clamping convexes 442 are movably clamped on the corresponding installation clamping blocks 421, and the fixing between the first clamping block 41 and the second clamping block 42 is performed.
[0034] Subsequently, the handle 451 is manually rotated to drive the rotating cam 46 to rotate, the protruding position of the rotating cam 46 presses the pressing pin 47 to control the pressing disc 471 and the protective pad 472 to descend, the return spring 48 is extruded and shrunk, until the lower surface of the protective pad 472 is in contact with the upper surface of the steel rail, the first clamping block 41 and the second clamping block 42 are fixed at the position of the steel rail and lift up the first clamping block 41 and the second clamping block 42, so that the digital caliper 1 and the digital height gauge 2 are stably and secondarily fixed at the steel rail detection position, which is convenient for subsequent accurate detection of the size of the rail head and the rail waist by using the digital caliper 1 and accurate detection of the size of the rail bottom by using the digital height gauge 2.
[0035] Among them, the rail waist is measured by using the digital caliper 1 with the rail head lower jaw as the measurement reference; the rail head is measured by using the digital caliper 1 by adjusting the digital caliper 1 up and down as a whole through the longitudinal straight line guide rail 51 and positioning the rail head measurement position by using the positioning rod 7; the rail bottom is measured by using the digital height gauge 2 with the rail bottom and the rail head lower jaw as the measurement reference.
[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A steel rail structure size detection tool, comprising a digital caliper (1) and a digital height gauge (2), characterized in that: The digital caliper (1) and the digital height gauge (2) are provided with a connecting tool (3), the digital caliper (1) is used for detecting the size of the rail head and rail waist, the digital height gauge (2) is used for detecting the size of the rail bottom, the connecting tool (3) comprises a positioning clamp (4), the positioning clamp (4) comprises a first clamp block (41) and a second clamp block (42), the first clamp block (41) and the second clamp block (42) are movably clamped at the rail head position, a first vertical frame (5) is fixedly installed on one side of the first clamp block (41) close to the digital caliper (1), a vertical linear guide rail (51) is fixedly installed on the first vertical frame (5), a first horizontal frame (52) is fixedly installed on the movable end of the vertical linear guide rail (51), a first horizontal linear guide rail (53) is fixedly installed on the first horizontal frame (52), and the digital caliper (1) is fixedly installed on the movable end of the first horizontal linear guide rail (53); a second horizontal frame (6) is fixedly installed on one side of the first clamp block (41) close to the digital height gauge (2), a second horizontal linear guide rail (61) is fixedly installed on the second horizontal frame (6), a second vertical frame (62) is fixedly installed on the movable end of the second horizontal linear guide rail (61), and the digital height gauge (2) is fixedly installed on the second vertical frame (62); and a positioning rod (7) is arranged on one side of the first horizontal frame (52) close to the positioning clamp (4).
2. The rail structure dimension detection tool according to claim 1, characterized in that: One end of the positioning rod (7) is fixedly installed with a rotating shaft (71), and the rotating shaft (71) is rotatably installed on one side of the first horizontal frame (52) close to the positioning clamp (4).
3. The rail structure dimension detection tooling of claim 1, wherein: The second clamp block (42) is provided with a mounting clamping block (421) on one side top close to the first clamp block (41), and the mounting clamping block (421) is movably clamped on the top of the first clamp block (41).
4. The rail structure dimension detection tooling of claim 1, wherein: The second clamp block (42) is fixedly installed with a positioning horizontal shaft (43) on one side top close to the first clamp block (41), and the positioning horizontal shaft (43) is movably clamped on the top of the first clamp block (41).
5. The rail structure dimension detection tooling of claim 3, wherein: The first clamp block (41) is fixedly installed with a mounting sleeve (44) on one side top close to the mounting clamping block (421), the mounting sleeve (44) is movably installed with a mounting pin (441) in the middle, the mounting pin (441) is fixedly installed with a clamping convex (442) at one end, and the clamping convex (442) is movably clamped on the corresponding mounting clamping block (421).
6. The rail structure dimension detection tooling of claim 5, wherein: The top end of the first clamping block (41) is fixedly installed with rotating seats (45) in the middle of one side of the mounting sleeve (44), rotating seats (45) are rotatably installed with cams (46) between them, the side of the first clamping block (41) close to the cam (46) is movably clamped with a press pin (47), the upper surface of the press pin (47) is in contact with the cam (46), the side of the first clamping block (41) close to the press pin (47) is provided with a spring groove (401), the spring groove (401) is provided with a return spring (48), the top end of the return spring (48) is in contact with the head of the press pin (47), the bottom end of the press pin (47) is screwedly installed with a pressure plate (471), the lower surface of the pressure plate (471) is fixedly installed with a protective pad (472), the lower surface of the protective pad (472) is in contact with the upper surface of the steel rail.
7. The rail structure dimension detection tooling of claim 6, wherein: The shaft end of the cam (46) is fixedly installed with a handle (451).