Adjustable shading cylinder and wheel-rail composite force detection device

Abstract

The utility model discloses an adjustable shading cylinder wheel-rail composite force detection device. The device comprises two sleeve assemblies which are respectively fixed on a laser emitting end and a PSD end which are oppositely arranged. The sleeve assembly comprises an inner sleeve and an outer sleeve which are arranged in a sleeved mode. One end of the sleeve assembly is a connecting end used for being connected with a laser emitting end or a PSD end, and the other end of the sleeve assembly is an abutting end used for abutting against the other sleeve assembly. A flange plate is arranged at the abutting end of one sleeve assembly, and the abutting end of the other sleeve assembly abuts against the flange plate, so that the abutting end without the flange plate can abut against the flange plate within the range of the flange plate. According to the utility model, the axial telescoping is realized through the sleeve assembly, and the problem that the shading cylinder is difficult to assemble due to the fixed distance between the laser emitting end and the PSD end in the prior art is solved. By means of the mode that the two sleeve assemblies abut against each other, the laser emitting end and the PSD end can still be installed under the condition that the laser emitting end and the PSD end are not concentric through the width of the flange plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to train detection technical field, especially related to an adjustable light -proof cylinder and wheel -rail composite force detection device. BACKGROUND

[0002] Rail transit vehicle wheelset directly contacts with steel rail, and wheel -rail force is generated when running, and the running state of vehicle can be monitored and the defects or damage of wheelset can be found in time through the detection of wheel -rail force, which plays a vital role in the operation safety of vehicle.

[0003] Wheel -rail force can be divided into vertical force and lateral force according to the direction of force. The measurement of front wheel -rail force mainly has the following several kinds: strain gauge measurement, shear support force measurement, fiber grating measurement, laser displacement method.

[0004] Laser displacement method is through installing laser and PSD sensor assembly on steel rail, and the position of laser on PSD sensor changes under the action of wheel -rail force, thereby causing the change of output voltage, and the size of wheel -rail force is calculated through the change of voltage and calibration process. The device in the following two reference patents is based on the principle of laser displacement method to realize the measurement of wheel -rail force.

[0005] The prior art Chinese patent application CN212766266U a kind of laser monitoring device for monitoring rail train running state, including transmitting module and receiving module;Further including pre-calibration device, the pre-calibration device includes support plate;The support plate both ends are provided with positioning step, the two bases are positioned and installed with support plate using positioning step;Further including the presser for pressing support plate on track, the presser includes L-shaped support by crossbeam and stringer, further including the press bar that can slide up and down along stringer. Further including two ends respectively set on transmitting base 13 and receiving base 10 on light -proof cylinder 16.

[0006] The above prior art sets up light -proof cylinder structure connected with laser end and PSD end, and the light -proof cylinder plays the role of waterproof, dustproof and excluding sunlight interference;But this kind of light -proof cylinder structure has the following several points of deficiency in practical application: (1) light -proof tube length is fixed and not adjustable, and the installation spacing of laser and receiver must be in specified range, causing assembly difficulty;(2) unable to adapt to short sleeper spacing requirement, and installation space requirement is higher;(3) the concentricity requirement of sleeve on laser and receiver is higher, causing assembly difficulty. UTILITY MODEL CONTENTS

[0007] Therefore, the utility model provides an adjustable light -proof cylinder and wheel -rail composite force detection device, and the light -proof cylinder leaves a certain amount in radial and axial directions to facilitate installation.

[0008] To solve the above technical problems, the technical scheme of the utility model is to adopt an adjustable light shielding cylinder, which comprises two sleeve assembly fixed on the laser emitting end and the PSD end respectively.

[0009] As an improvement, the inner sleeve and the outer sleeve are connected by thread cooperation, so that the axial relative position between the outer sleeve and the inner sleeve can be adjusted.

[0010] As a further improvement, the inner sleeve is provided with an inner thread for thread cooperation with the laser emitting end or the PSD end; and a locking nut is arranged behind the outer sleeve on the inner sleeve.

[0011] As another further improvement, a retreat stop washer is arranged between the locking nut and the outer sleeve; a plurality of ear plates are radially arranged on the outer edge of the retreat stop washer; and at least part of the ear plates are bent to tightly abut against the side wall of the locking nut and the side wall of the outer sleeve.

[0012] As an improvement, the outer sleeve without the flange is provided with an abutting position marking.

[0013] As an improvement, the marking is a paint groove, and the paint groove is coated with red paint.

[0014] As an improvement, the end of the sleeve assembly connecting end is provided with a gasket for sealing.

[0015] As an improvement, the outer diameter of the abutting end without the flange is smaller than the outer diameter of the flange, and the inner diameter is larger than the inner diameter of the flange.

[0016] As an improvement, the flange is provided with a brim for shielding the abutting end.

[0017] The utility model also provides a wheel rail composite force detection device, including the laser emitting end and the PSD end who sets up oppositely, be provided with above adjustable light shielding cylinder between the laser emitting end and the PSD end.

[0018] The utility model has the advantages that:

[0019] The light shielding cylinder with the above structure realizes axial expansion and contraction through the sleeve assembly, solves the problem that the laser emission end and the PSD end are difficult to assemble due to the fixed spacing in the prior art, and the axial positions of the inner sleeve and the outer sleeve can be adjusted, so that the length of the whole sleeve assembly can also be adjusted, thereby the corresponding length can be adjusted according to the spacing of the laser emission end and the PSD end, and the assembly is simplified. In addition, the two sleeve assemblies are abutted, the width of the flange plate is utilized, and the laser emission end and the PSD end can still be installed in the eccentric state. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a sectional view of the utility model.

[0021] Figure 2 It is a schematic view of the stop washer.

[0022] Figure 3 It is a schematic view of the ear plate after being bent of the stop washer.

[0023] Mark in the figure: 1 inner sleeve, 2 outer sleeve, 3 locking nut, 4 stop washer, 5 flange plate, 6 hat brim, 7 washer, 41 ear plate, 100 laser emission end, 200 PSD end. DETAILED DESCRIPTION

[0024] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below in combination with specific embodiments.

[0025] As Figure 1 Indicated, the utility model provides a kind of adjustable light shielding cylinder, including two sleeve assemblies respectively fixed on oppositely arranged laser emission end 100 and PSD (Position Sensitive Detector location sensitive detector) end 200;The sleeve assembly includes inner sleeve 1 and outer sleeve 2 that are nested, and one end of the sleeve assembly is the connecting end for being connected with laser emission end 100 or PSD end 200, and the other end is the abutment end for being abutted with another sleeve assembly;The abutment end of one sleeve assembly is provided with flange plate 5, and the abutment end of another sleeve assembly is abutted on flange plate 5, so that the abutment end not being provided with flange plate can be abutted within the range of flange plate 5.

[0026] This invention achieves axial expansion and contraction through a sleeve assembly, solving the problem of difficult assembly of the light-shielding tube due to the fixed spacing between the laser emitter and PSD ends in existing technologies. The axial position of the inner and outer sleeves can be adjusted, allowing for adjustment of the entire sleeve assembly's length to suit the spacing between the laser emitter and PSD ends, thus simplifying assembly. Furthermore, this invention utilizes the abutment of two sleeve assemblies, leveraging the width of the flange 5 to enable installation even when the laser emitter and PSD ends are misaligned.

[0027] In this invention, the sleeve assembly consists of an outer sleeve 2 and an inner sleeve 1 that are nested together. This invention does not limit the outer sleeve 2 to be the abutting end and the inner sleeve 1 to be the connecting end; the reverse is also possible. Furthermore, the flange 5 is not limited to being located on the sleeve assembly on the laser emitting end side or on the sleeve assembly on the PSD end side; both are acceptable.

[0028] Specifically, in this embodiment, the inner sleeve 1 and the outer sleeve 2 are connected by a threaded connection, which makes the axial relative position between the outer sleeve 2 and the inner sleeve 1 adjustable, thereby changing the length of the entire sleeve assembly.

[0029] In addition, in this embodiment, the inner sleeve 1 is preferably used as the connecting end and the outer sleeve 2 as the abutting end. Therefore, the inner sleeve 1 in this embodiment is provided with internal threads for threaded connection with the laser emitting end 100 or the PSD end 200; and a tightening nut 3 is provided on the inner sleeve 1 behind the outer sleeve 2. The tightening nut 3 prevents the inner and outer sleeves from loosening due to vibration when the train passes, thus preventing changes in their axial position. The tightening nut 3 is located behind the outer sleeve 2 to prevent the outer sleeve 2 from retracting.

[0030] To further prevent the tightening nut 3 from loosening and improve the reliability of the equipment, such as Figure 2 , Figure 3 As shown, in this embodiment, a retaining washer 4 is provided between the tightening nut 3 and the outer sleeve 2; several ear plates 41 are radially arranged along the outer edge of the retaining washer 4; at least part of the ear plates 41 are bent and pressed against the side wall of the tightening nut 3 and the side wall of the outer sleeve 2. After the ear plates 41 are bent, they clamp the tightening nut 3 and the outer sleeve 2, preventing them from rotating. The retaining washer 4 is also pressed against the rear end of the outer sleeve 2 by the tightening nut 3, thereby creating an interlock between the retaining washer 4, the tightening nut 3, and the outer sleeve 2.

[0031] In some embodiments, the outer edge of the flange 5 is provided with a cap 6 for covering the abutting end, so that the abutting point between the two sleeve assemblies is covered, which is more aesthetically pleasing and can also prevent foreign objects from entering the interior.

[0032] In addition, it can be understood that, in order to make the range of radial tolerance between the two abutting ends larger, the outer diameter of the abutting end without the flange is smaller than the outer diameter of the flange 5, and the inner diameter is larger than the inner diameter of the flange 5. In this way, as long as the abutting end without the flange is within the range of the flange 5, the abutting can be successfully achieved without the need for the two to be concentric.

[0033] In order to identify whether the abutting is in place during assembly, the outer sleeve 2 without the flange is provided with an abutting-in-place mark (not shown in the figure). Specifically, the mark is a paint groove, which is coated with red paint, and of course other colors can also be used as long as they are eye-catching. During assembly, as long as the brim 6 on the flange 5 is flush with the paint groove, it means that the abutting is in place, and at this time the outer sleeve 2 can be locked by the union nut 3.

[0034] In addition, in order to improve the sealing performance of the inner sleeve 1 and the laser emitting end 100 or the PSD end 200, the end of the sleeve assembly connecting end, that is, the rear end of the inner sleeve 1 in this embodiment, is provided with a gasket 7 for sealing. The material of the gasket 7 is preferably engineering plastic such as nylon, which is more corrosion-resistant and durable.

[0035] Embodiment 2

[0036] The utility model also provides a wheel rail composite force detection device, including opposite setting laser emitting end 100 and PSD end 200, be provided with above-mentioned adjustable type shading cylinder between laser emitting end 100 and PSD end 200.

[0037] The above is only the preferred embodiment of the utility model, and it should be pointed out that the above-mentioned preferred embodiment should not be regarded as the limitation of the utility model, and the protection scope of the utility model should be limited by the range defined by the claims. For ordinary skilled in the art, without departing from the spirit and scope of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. An adjustable shade tube, characterized by: The two sleeve assemblies are respectively fixed on the oppositely arranged laser emitting end and PSD end; the sleeve assembly comprises an inner sleeve and an outer sleeve arranged in a sleeve manner; one end of the sleeve assembly is a connecting end for connecting with the laser emitting end or the PSD end, and the other end is an abutting end for abutting with the other sleeve assembly; the abutting end of one sleeve assembly is provided with a flange, and the abutting end of the other sleeve assembly abuts on the flange, so that the abutting end without the flange can abut within the range of the flange.

2. A variable diaphragm cylinder according to claim 1, characterized in that: The inner sleeve and the outer sleeve are connected by thread cooperation, so that the axial relative position between the outer sleeve and the inner sleeve can be adjusted.

3. A variable diaphragm cylinder according to claim 2, characterized in that: The inner sleeve is provided with an inner thread for thread cooperation with the laser emitting end or the PSD end; the inner sleeve is provided with a locking nut behind the outer sleeve.

4. A variable diaphragm cylinder according to claim 3, characterized in that: A retreat-stop washer is arranged between the locking nut and the outer sleeve; a plurality of ear plates are arranged radially on the outer edge of the retreat-stop washer; at least part of the ear plates are bent to tightly abut on the side wall of the locking nut and the side wall of the outer sleeve.

5. The adjustable shade column of claim 3, wherein: The outer sleeve without the flange is provided with an abutting-in-place mark.

6. An adjustable shade column according to claim 5, wherein: The mark is a paint groove, and the paint groove is coated with red paint.

7. The adjustable shade column of claim 1, wherein: The end of the connecting end of the sleeve assembly is provided with a gasket for sealing.

8. The adjustable shade column of claim 1, wherein: The outer diameter of the abutting end without the flange is smaller than the outer diameter of the flange, and the inner diameter is larger than the inner diameter of the flange.

9. The adjustable shade column of claim 1, wherein: The flange is provided with a brim for shielding the abutting end.

10. A wheel-rail composite force detection device, characterized in that: The laser emitting end and the PSD end are oppositely arranged, and the laser emitting end and the PSD end are provided with the adjustable light shielding sleeve according to any one of claims 1-9.

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