Inductance type steel rail straightness measuring instrument

Abstract

An inductance type steel rail straightness measuring instrument relates to the technical field of rail transit and comprises a shell, a driving assembly, a magnetic railing ruler tape assembly and a displacement acquisition assembly. The driving assembly and the magnetic railing ruler tape assembly are fixedly connected to the shell. The displacement acquisition assembly is connected to the shell in a sliding manner; the displacement acquisition assembly comprises a magnetic railing ruler reading head and an inductive displacement sensor; the magnetic railing ruler reading head corresponds to the magnetic railing ruler tape assembly in position; the driving assembly can drive the displacement acquisition assembly to move so that the magnetic railing ruler reading head and the inductive displacement sensor can move synchronously, and the magnetic railing ruler reading head can acquire position information on the magnetic railing ruler tape assembly. The utility model aims to provide an inductance type steel rail straightness measuring instrument so as to solve the problems of poor anti-interference capability, inaccurate positioning and large measurement deviation in actual use conditions to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, and particularly to an inductive rail straightness measuring instrument. Background Art

[0002] In the rail transit industry, seamless rails are increasingly widely used in high-speed and heavy-haul railway lines. A seamless rail refers to a rail welded together through a welding process. Compared with traditional jointed rails, seamless rails effectively improve the safety, smoothness, and comfort during train operation. To evaluate the welding quality of seamless rails, the rail welding process requires that after the welding and subsequent grinding processes are completed, the relevant department should use a special rail straightness measuring instrument to check whether the straightness of the welded part of the rail meets the acceptance standard. By collecting and analyzing the rail straightness data, the welding quality of the rail can be evaluated, which can be used for daily operation and maintenance inspection operations and guiding subsequent rail grinding work to ensure the safe operation of trains.

[0003] Currently, rail straightness detectors use electronic straightedges to detect the straightness of rails. The electronic straightedge usually uses a laser ranging sensor as the main measurement sensor, and grating sensors and proximity switches as auxiliary positioning sensors for measurement; for example, the ZDY-S-A type electronic straightedge developed by Harbin Antong Rail Technology Co., Ltd. and the electronic straightedge developed by Chengdu Sifang Ruibang Measurement and Control Technology Co., Ltd. etc. The following problems exist in the measurement process of this electronic straightedge:

[0004] (1) When there are rust, oil stains, water stains on the surface of the measured rail and the ambient light is strong, it is very likely to affect the reflected light of the laser ranging sensor, thereby causing a large measurement deviation, and thus affecting the measurement accuracy;

[0005] (2) Using grating sensors and proximity switches as auxiliary positioning sensors to position the ranging sensor, there are effects of mechanical deviation, electronic response time, and changes in the driving motor speed, resulting in inaccurate positioning of the ranging sensor during forward and reverse movement, and it is impossible to achieve high-precision positioning, leading to a large deviation in repeated measurements. For example, when the power supply voltage drops and the ambient temperature changes, it is easy to cause changes in the driving motor speed and changes in the friction of transmission components; when such problems occur, it is impossible to make the ranging sensor move horizontally evenly and stably. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an inductive rail straightness measuring instrument to solve, to a certain extent, the problems of poor anti-interference ability, inaccurate positioning, and large measurement deviation existing in actual use conditions.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An inductive rail flatness measuring instrument includes a housing, a driving assembly, a magnetic grating tape assembly, and a displacement acquisition assembly;

[0009] The driving assembly and the magnetic grating tape assembly are respectively fixedly connected to the housing; the displacement acquisition assembly is slidably connected to the housing;

[0010] The displacement acquisition assembly includes a magnetic grating head and an inductive displacement sensor; the magnetic grating head corresponds to the position of the magnetic grating tape assembly;

[0011] The driving assembly can drive the displacement acquisition assembly to move, so that the magnetic grating head and the inductive displacement sensor move synchronously, and the magnetic grating head can collect the position information on the magnetic grating tape assembly.

[0012] In any of the above technical solutions, optionally, a rail-leaning assembly is connected to the outside of the housing; the number of the rail-leaning assemblies is at least two; two of the rail-leaning assemblies are arranged at both ends of the housing;

[0013] The rail-leaning assembly includes a side fixing seat, a reference fixing block, a positioning pin shaft, an auxiliary reference fixing block, an elastic member, and a reference positioning pin; the reference positioning pin sequentially passes through the auxiliary reference fixing block and the reference fixing block and is fixedly connected to the side fixing seat;

[0014] The reference fixing block is connected to the housing;

[0015] The elastic member is sleeved on the reference positioning pin and is located between the cap head of the reference positioning pin and the auxiliary reference fixing block; the elastic member has an elastic deformation that drives the cap head of the reference positioning pin away from the auxiliary reference fixing block.

[0016] In any of the above technical solutions, optionally, the number of the positioning pin shafts is two, and the two positioning pin shafts are centrosymmetric about the central axis of the reference positioning pin;

[0017] One end of the positioning pin shaft is fixedly connected to the auxiliary reference fixing block, and the other end is detachably connected to the positioning pin hole of the reference fixing block; or, one end of the positioning pin shaft is fixedly connected to the reference fixing block, and the other end is detachably connected to the positioning pin hole of the auxiliary reference fixing block;

[0018] Along the central axis of the reference positioning pin towards the cap head direction of the reference positioning pin, the elastic deformation of the elastic member is greater than the size of the positioning pin shaft inserted into the positioning pin hole.

[0019] In any of the above technical solutions, optionally, the elastic member is a spring;

[0020] The side fixing seat is detachably connected to the reference fixing block, or the side fixing seat and the reference fixing block are integrally provided.

[0021] In any of the above technical solutions, optionally, the inductive rail flatness measuring instrument further includes a linear guide sliding assembly; the linear guide sliding assembly includes a linear guide and a slider configured to be slidable along the linear guide;

[0022] The linear guide is fixed inside the housing, and the slider is fixedly connected to the displacement acquisition assembly.

[0023] In any of the above technical solutions, optionally, the driving assembly includes a motor, a driving wheel assembly, a conveyor belt, and a driven wheel assembly;

[0024] The motor and the driven wheel assembly are respectively connected to two ends of the housing; the driving wheel assembly is drivingly connected to the driven wheel assembly through the conveyor belt, and the conveyor belt is connected to the displacement acquisition assembly;

[0025] The driving end of the motor is connected to the driving wheel assembly so that the displacement acquisition assembly moves along with the conveyor belt.

[0026] In any of the above technical solutions, optionally, the housing is made of high-strength extruded aluminum profiles;

[0027] The housing has a plurality of chutes extending along its own length direction; the magnetic scale tape assembly is fixedly connected in one of the chutes.

[0028] In any of the above technical solutions, optionally, a control panel assembly and a control component are connected to the housing;

[0029] The control panel assembly, the driving assembly, and the displacement acquisition assembly are respectively electrically connected to the control component.

[0030] In any of the above technical solutions, optionally, the displacement acquisition assembly includes a cable transfer card; the magnetic scale head and the inductive displacement sensor are respectively electrically connected to the control component through the cable transfer card;

[0031] The displacement acquisition assembly includes a displacement acquisition bracket connected to the housing; the magnetic scale head and the inductive displacement sensor are fixedly connected to the displacement acquisition bracket.

[0032] In any of the above technical solutions, optionally, the driving assembly includes a motor, a hydraulic cylinder or a cylinder;

[0033] The driving component, the magnetic scale tape component, and the displacement acquisition component are respectively arranged inside the housing.

[0034] The beneficial effects of the present utility model mainly lie in:

[0035] The inductive rail flatness measuring instrument provided by the present utility model includes a housing, a driving component, a magnetic scale tape component, and a displacement acquisition component. The driving component can drive the displacement acquisition component to move, so that the magnetic scale head and the inductive displacement sensor move synchronously, and the magnetic scale head can collect the position information on the magnetic scale tape component. Among them, the inductive displacement sensor is a ranging sensor based on the inductive measurement principle. This sensor is not affected by environmental light and the reflectivity of the measured surface, and has the characteristics of high sensitivity and strong anti-interference ability. It will not be affected by factors such as rust, oil stain, and water stain on the surface of the measured rail, effectively improving the measurement accuracy of the inductive rail flatness measuring instrument and reducing the measurement deviation; by using the magnetic scale head in combination with the magnetic scale tape component, the spatial repeat positioning accuracy of the ranging sensor can be effectively improved, and thus the repeat measurement accuracy of the inductive rail flatness measuring instrument can be effectively improved.

[0036] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0038] Figure 1 It is a schematic structural diagram of the inductive rail flatness measuring instrument provided by the embodiment of the present utility model;

[0039] Figure 2 It is an application schematic diagram of the inductive rail flatness measuring instrument provided by the embodiment of the present utility model.

[0040] Icons: 100 - Control panel component; 200 - Drive component; 300 - Rail component; 310 - Side fixing seat; 320 - Reference fixing block; 330 - Positioning pin shaft; 340 - Auxiliary reference fixing block; 350 - Elastic member; 360 - Reference positioning pin; 400 - Control component; 500 - Magnetic scale tape component; 600 - Displacement acquisition component; 610 - Cable transfer card; 620 - Magnetic scale reader head; 630 - Inductive displacement sensor; 700 - Linear guide sliding component; 800 - Cable fixing bracket component; 900 - Handle component; 1000 - Power supply; 1100 - Driven wheel component; 1200 - Housing; 1300 - End cover. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0043] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0044] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0045] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0048] Example

[0049] This embodiment provides an inductive rail straightness measuring instrument; please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 Schematic diagram of two application states of the inductive rail straightness measuring instrument provided in this embodiment, wherein Figure 1 The rail to be tested is shown below the inductive rail straightness measuring instrument, which measures the top surface of the rail. Figure 2 The rail to be tested is shown to be located at the side of the inductive rail straightness measuring instrument, which measures the side of the rail.

[0050] See also Figure 1 and Figure 2 As shown, the inductive rail straightness measuring instrument provided in this embodiment relates to the field of railway and rail transit control measurement, belongs to the standard number "TBT3323-2013 Rail Straightness Measuring Instrument", and is used for rail straightness measurement and track straightness detection, especially for the straightness measurement of seamless rails; it can be used to measure the straightness of the top and side surfaces of the rails.

[0051] The inductive rail straightness measuring instrument comprises a housing 1200 , a driving assembly 200 , a magnetic scale magnetic tape assembly 500 and a displacement acquisition assembly 600 .

[0052] The driving component 200 and the magnetic scale tape component 500 are respectively fixedly connected to the housing 1200; the displacement acquisition component 600 is slidably connected to the housing 1200. For example, the displacement acquisition component 600 slides along the length direction of the housing 1200.

[0053] The displacement acquisition component 600 includes a magnetic scale head 620 and an inductive displacement sensor 630; the magnetic scale head 620 corresponds to the position of the magnetic scale tape component 500. In this embodiment, the ranging sensor improves the laser ranging sensor to an inductive displacement sensor 630 with stronger anti-interference ability, which can effectively enhance the applicability of the inductive rail straightness measuring instrument, effectively improve the anti-interference ability of the ranging sensor, and thus effectively overcome the influence of external factors and improve the measurement accuracy of the inductive rail straightness measuring instrument.

[0054] The driving component 200 can drive the displacement acquisition component 600 to move, so that the magnetic scale head 620 and the inductive displacement sensor 630 move synchronously, and the magnetic scale head 620 can collect the position information on the magnetic scale tape component 500. By using the magnetic scale head 620 and the magnetic scale tape component 500 in combination, the spatial repeat positioning accuracy of the ranging sensor can be effectively improved. For example, the spatial repeat positioning accuracy can reach 10 microns.

[0055] Optionally, the magnetic scale tape component 500 extends along the length direction of the housing 1200.

[0056] In this embodiment, the inductive rail straightness measuring instrument includes a housing 1200, a driving component 200, a magnetic scale tape component 500, and a displacement acquisition component 600. The driving component 200 can drive the displacement acquisition component 600 to move, so that the magnetic scale head 620 and the inductive displacement sensor 630 move synchronously, and the magnetic scale head 620 can collect the position information on the magnetic scale tape component 500. Among them, the inductive displacement sensor 630 is a ranging sensor based on the inductive measurement principle. This sensor is not affected by environmental light and the reflectivity of the measured surface, and has the characteristics of high sensitivity and strong anti-interference ability. It will not be affected by factors such as rust, oil stains, and water stains on the surface of the measured rail, effectively improving the measurement accuracy of the inductive rail straightness measuring instrument and reducing the measurement deviation; by using the magnetic scale head 620 and the magnetic scale tape component 500 in combination, the spatial repeat positioning accuracy of the ranging sensor can be effectively improved, and thus the repeat measurement accuracy of the inductive rail straightness measuring instrument can be effectively improved.

[0057] See Figure 1As shown, in an alternative solution of this embodiment, a rail support assembly 300 is externally connected to the housing 1200; the number of the rail support assemblies 300 is at least two; two of the rail support assemblies 300 are arranged at both ends of the housing 1200 so that the rail support assembly 300 can better support and position the inductive rail straightness measuring instrument when detecting the rail.

[0058] Optionally, the rail support assembly 300 includes a side fixing seat 310, a reference fixing block 320, a positioning pin shaft 330, an auxiliary reference fixing block 340, an elastic member 350, and a reference positioning pin 360; the reference positioning pin 360 sequentially passes through the auxiliary reference fixing block 340 and the reference fixing block 320 and is fixedly connected to the side fixing seat 310.

[0059] The reference fixing block 320 is connected to the housing 1200.

[0060] The elastic member 350 is sleeved on the reference positioning pin 360 and is located between the cap head of the reference positioning pin 360 and the auxiliary reference fixing block 340; the elastic member 350 has an elastic deformation that drives the cap head of the reference positioning pin 360 away from the auxiliary reference fixing block 340. In the inductive rail straightness measuring instrument of this embodiment, by improving the structural form of the rail support assembly, that is, improving the structural form of the spring and steel ball or spring pin to the structural form of the positioning pin shaft 330, the positioning accuracy after the rotation of the auxiliary reference fixing block 340 can be effectively improved, and further the repeated position accuracy between the inductive rail straightness measuring instrument and the measured rail can be improved. In the prior art, the positioning of the rail straightness measuring instrument usually adopts the structural form of a spring and a steel ball or a spring pin. This structural form has the problem of inaccurate positioning of the auxiliary positioning block. The reason is that the steel ball or the positioning pin and the reference block are moving parts and need to adopt a clearance fit. Therefore, there is a part of the clearance after the adjustment of the auxiliary reference block, resulting in a position deviation when the rail straightness measuring instrument and the measured rail are repeatedly measured.

[0061] See Figure 1 As shown, in an alternative solution of this embodiment, the number of the positioning pin shafts 330 is two, and the two positioning pin shafts 330 are centrosymmetric about the central axis of the reference positioning pin 360; by the two positioning pin shafts 330 being centrosymmetric about the central axis of the reference positioning pin 360, the positioning accuracy after the rotation of the auxiliary reference fixing block 340 can be effectively improved.

[0062] One end of the positioning pin shaft 330 is fixedly connected to the auxiliary reference fixing block 340, and the other end is detachably connected to the positioning pin hole of the reference fixing block 320; or, one end of the positioning pin shaft 330 is fixedly connected to the reference fixing block 320, and the other end is detachably connected to the positioning pin hole of the auxiliary reference fixing block 340.

[0063] Along the central axis of the reference positioning pin 360 towards the cap head direction of the reference positioning pin 360, the elastic deformation of the elastic member 350 is greater than the dimension of the positioning pin shaft 330 inserted into the positioning pin hole. To ensure that when the auxiliary reference fixing block 340 is driven by an external force to move along the central axis of the reference positioning pin 360 towards the cap head direction of the reference positioning pin 360, the positioning pin shaft 330 can be made to move away from the positioning pin hole, thereby facilitating the rotation of the auxiliary reference fixing block 340 by 180°. After that, the positioning pin shaft 330 is inserted into the repositioned positioning pin hole. By rotating the auxiliary reference fixing block 340 by 180°, the exchange of measuring the top surface and the side surface of the rail by the inductive rail straightness measuring instrument can be achieved.

[0064] In an alternative embodiment of the present embodiment, the elastic member 350 is a spring or other elastic member.

[0065] In an alternative embodiment of the present embodiment, the side fixing seat 310 and the reference fixing block 320 are detachably connected. For example, the side fixing seat 310 and the reference fixing block 320 are connected by screws.

[0066] In an alternative embodiment of the present embodiment, the side fixing seat 310 and the reference fixing block 320 are integrally provided to simplify the structure of the rail-leaning assembly 300.

[0067] See Figure 1 As shown, in an alternative embodiment of the present embodiment, the inductive rail straightness measuring instrument further includes a linear guide sliding assembly 700; the linear guide sliding assembly 700 includes a linear guide and a slider configured to be slidable along the linear guide.

[0068] The linear guide is fixed inside the housing 1200, and the slider is fixedly connected to the displacement acquisition assembly 600. Through the linear guide and the slider, the linear movement of the displacement acquisition assembly 600 is ensured.

[0069] See Figure 1 As shown, in an alternative embodiment of the present embodiment, the drive assembly 200 includes a motor, a driving wheel assembly, a conveyor belt, and a driven wheel assembly 1100.

[0070] The motor and the driven wheel assembly 1100 are respectively connected to both ends of the housing 1200; two of the rail-leaning assemblies 300 are respectively located below the motor and the driven wheel assembly 1100. The driving wheel assembly is drivingly connected to the driven wheel assembly 1100 through the conveyor belt, and the conveyor belt is connected to the displacement acquisition assembly 600.

[0071] The driving end of the motor is connected to the driving wheel assembly so that the displacement acquisition assembly 600 moves with the conveyor belt. Optionally, the conveyor belt is, for example, a synchronous belt, a transmission steel wire, etc.

[0072] See Figure 1As shown, in an alternative solution of this embodiment, the housing 1200 is made of high-strength extruded aluminum profiles; the extruded aluminum profiles are, for example, aluminum alloy extruded profiles, which have the characteristics of high strength and light weight. By making the housing 1200 of high-strength extruded aluminum profiles, the structure of the housing 1200 can be simplified, the strength of the housing 1200 can be improved, the width of the inductive rail straightness measuring instrument can be effectively reduced, and the inductive rail straightness measuring instrument can meet the applicable performance under harsh environments.

[0073] Optionally, the housing 1200 has a plurality of chutes extending along its own length direction; by using a plurality of chutes in the housing 1200, the structural size of the housing 1200 can be effectively reduced, and measurements can be made in a narrow space.

[0074] Optionally, the magnetic scale tape assembly 500 is fixedly connected in one of the chutes. For example, the magnetic scale tape assembly 500 is fixedly connected in one of the chutes and fixed with screws.

[0075] Optionally, a part of the drive assembly 200 is fixedly connected in one of the chutes. By integrating components such as the drive assembly 200 and the magnetic scale tape assembly 500 together, the overall size of the inductive rail straightness measuring instrument can be greatly reduced, and measurements can be made in a narrow space. For example, when the rails are arranged in sequence in the freight yard, the inductive rail straightness measuring instrument can still measure the side of the rails.

[0076] Optionally, the linear guide is fixedly connected in one of the chutes and fixed with screws.

[0077] See Figure 1 As shown, in an alternative solution of this embodiment, an operation panel assembly 100 and a control assembly 400 are connected to the housing 1200.

[0078] The operation panel assembly 100, the drive assembly 200, and the displacement acquisition assembly 600 are respectively electrically connected to the control assembly 400. Through the control assembly 400, it is convenient to control the operation panel assembly 100, the drive assembly 200, and the displacement acquisition assembly 600.

[0079] See Figure 1 As shown, in an alternative solution of this embodiment, the displacement acquisition assembly 600 includes a cable transfer card 610; the magnetic scale head 620 and the inductive displacement sensor 630 are respectively electrically connected to the control assembly 400 through the cable transfer card 610.

[0080] Optionally, the displacement acquisition component 600 includes a displacement acquisition bracket connected to the housing 1200; the magnetic scale head 620 and the inductive displacement sensor 630 are fixedly connected to the displacement acquisition bracket. By fixedly connecting the magnetic scale head 620 and the inductive displacement sensor 630 to the same bracket, the actual spatial positioning accuracy of the inductive displacement sensor 630 is improved, thereby improving the repeated measurement accuracy of the inductive displacement sensor 630.

[0081] In an alternative embodiment of the present embodiment, the driving component 200 includes a motor, a hydraulic cylinder or a cylinder; that is, the driving component 200 can adopt driving methods such as motor driving, hydraulic driving or cylinder driving.

[0082] See Figure 1 As shown, in an alternative embodiment of the present embodiment, the driving component 200, the magnetic scale tape component 500 and the displacement acquisition component 600 are respectively arranged inside the housing 1200.

[0083] In an alternative embodiment of the present embodiment, the inductive rail straightness measuring instrument includes a wire arrangement fixing bracket assembly 800 to facilitate the fixing of the wire arrangement.

[0084] In an alternative embodiment of the present embodiment, the inductive rail straightness measuring instrument includes a handle assembly 900 fixedly connected to the housing 1200 to facilitate the taking and placing of the inductive rail straightness measuring instrument.

[0085] In an alternative embodiment of the present embodiment, the inductive rail straightness measuring instrument includes a power supply 1000; the power supply is, for example, a low-temperature type pluggable lithium battery or other power supply. Optionally, the control component 400 and the power supply 1000 are both installed at both ends of the housing 1200 and have dedicated position slots to improve the seismic performance of the inductive rail straightness measuring instrument.

[0086] In an alternative embodiment of the present embodiment, an end cover 1300 is connected to one end of the housing 1200 away from the control panel assembly 100 to increase the protection ability of the inductive rail straightness measuring instrument.

[0087] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An inductive rail flatness measuring instrument, characterized in that, It includes a housing (1200), a driving component (200), a magnetic scale tape component (500), and a displacement acquisition component (600); The driving component (200) and the magnetic scale tape component (500) are respectively fixedly connected to the housing (1200); the displacement acquisition component (600) is slidably connected to the housing (1200); The displacement acquisition component (600) includes a magnetic scale head (620) and an inductive displacement sensor (630); the magnetic scale head (620) corresponds to the position of the magnetic scale tape component (500); The driving component (200) can drive the displacement acquisition component (600) to move, so that the magnetic scale head (620) and the inductive displacement sensor (630) move synchronously, and the magnetic scale head (620) can acquire the position information on the magnetic scale tape component (500).

2. The inductive rail flatness measuring instrument according to claim 1, characterized in that, A rail component (300) is connected to the outside of the housing (1200); the number of the rail components (300) is at least two; two of the rail components (300) are arranged at both ends of the housing (1200); The rail component (300) includes a side fixing seat (310), a reference fixing block (320), a positioning pin shaft (330), an auxiliary reference fixing block (340), an elastic member (350), and a reference positioning pin (360); the reference positioning pin (360) sequentially passes through the auxiliary reference fixing block (340) and the reference fixing block (320), and is fixedly connected to the side fixing seat (310); The reference fixing block (320) is connected to the housing (1200); The elastic member (350) is sleeved on the reference positioning pin (360) and is located between the cap head of the reference positioning pin (360) and the auxiliary reference fixing block (340); the elastic member (350) has an elastic deformation that drives the cap head of the reference positioning pin (360) away from the auxiliary reference fixing block (340).

3. The inductive rail flatness measuring instrument according to claim 2, characterized in that, The number of the positioning pin shafts (330) is two, and the two positioning pin shafts (330) are centrosymmetric about the central axis of the reference positioning pin (360); One end of the positioning pin shaft (330) is fixedly connected to the auxiliary reference fixing block (340), and the other end is detachably connected to the positioning pin hole of the reference fixing block (320); alternatively, one end of the positioning pin shaft (330) is fixedly connected to the reference fixing block (320), and the other end is detachably connected to the positioning pin hole of the auxiliary reference fixing block (340); Along the central axis of the reference positioning pin (360) towards the cap head direction of the reference positioning pin (360), the elastic deformation of the elastic member (350) is greater than the size of the positioning pin shaft (330) inserted into the positioning pin hole.

4. The inductive rail flatness measuring instrument according to claim 2, characterized in that, The elastic member (350) is a spring; The side fixing base (310) is detachably connected to the reference fixing block (320), or the side fixing base (310) and the reference fixing block (320) are integrally provided.

5. The inductive rail flatness measuring instrument according to claim 1, characterized in that, It further includes a linear guide rail sliding assembly (700); the linear guide rail sliding assembly (700) includes a linear guide rail and a slider configured to be slidable along the linear guide rail; The linear guide rail is fixed inside the housing (1200), and the slider is fixedly connected to the displacement acquisition assembly (600).

6. The inductive rail flatness measuring instrument according to claim 1, characterized in that, The driving assembly (200) includes a motor, a driving wheel assembly, a conveyor belt, and a driven wheel assembly (1100); The motor and the driven wheel assembly (1100) are respectively connected to two ends of the housing (1200); the driving wheel assembly is drivingly connected to the driven wheel assembly (1100) through the conveyor belt, and the conveyor belt is connected to the displacement acquisition assembly (600); The driving end of the motor is connected to the driving wheel assembly, so that the displacement acquisition assembly (600) moves along with the conveyor belt.

7. The inductive rail flatness measuring instrument according to claim 1, wherein The housing (1200) is made of high-strength extruded aluminum profile; The housing (1200) has a plurality of sliding grooves extending along its own length direction; the magnetic grating tape assembly (500) is fixedly connected in one of the sliding grooves.

8. The inductive rail flatness measuring instrument according to claim 1, characterized in that, A control panel assembly (100) and a control assembly (400) are connected to the housing (1200); The control panel assembly (100), the driving assembly (200), and the displacement acquisition assembly (600) are respectively electrically connected to the control assembly (400).

9. The inductive rail flatness measuring instrument according to claim 8, characterized in that, The displacement acquisition assembly (600) includes a wire arrangement adapter card (610); the magnetic grating head (620) and the inductive displacement sensor (630) are respectively electrically connected to the control assembly (400) through the wire arrangement adapter card (610); The displacement acquisition assembly (600) includes a displacement acquisition bracket connected to the housing (1200); the magnetic grating head (620) and the inductive displacement sensor (630) are fixedly connected to the displacement acquisition bracket.

10. The inductive rail flatness measuring instrument according to claim 1, characterized in that, The driving assembly (200) includes a motor, a hydraulic cylinder or a pneumatic cylinder; The driving assembly (200), the magnetic grating tape assembly (500), and the displacement acquisition assembly (600) are respectively arranged inside the housing (1200).

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