A fixing device for a pull-wire displacement sensor

Abstract

The invention discloses a fixing device for a pull-wire displacement sensor, comprising a sensor bracket, a protruding structure is provided on the upper end surface of the left side of the sensor bracket, a level is fixedly installed on the horizontal end surface of the end of the sensor bracket on the left side of the protruding structure, four circular through holes provided on the left side of the sensor bracket are fixedly installed with pull-wire displacement sensors at corresponding positions, a pull wire is provided on the pull-wire displacement sensor, waist-shaped slot holes are symmetrically provided on the right side of the sensor bracket, and U-shaped pads A and U-shaped pads B are fixedly installed on the upper part of the waist-shaped slot holes; the level ensures that the installation of the sensor will not be tilted, the operation is simple, and the installation and adjustment are convenient, which is beneficial to improving the accuracy of the detection data, and is beneficial to improving the verticality of the extension and retraction of the pull wire, avoiding abnormal wear of the pull wire of the displacement sensor, and will not cause the sensor to loosen due to the bumps of the road, and is also beneficial to adjusting the position of the pull-wire displacement sensor by rotating the clamp.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile detection equipment, and in particular relates to a fixing device for a wire displacement sensor. Background Art

[0002] With the rapid development of the automobile industry, the durability and comfort requirements of the whole vehicle are getting higher and higher. During the fatigue durability verification process of the whole vehicle, the collection of the whole vehicle road load spectrum provides reliable data support for laboratory bench testing or multi-body dynamics simulation analysis, provides reliable data support for various components of the vehicle, and makes accurate predictions and judgments on the fatigue life of various components of the vehicle.

[0003] As the main instrument for collecting data on the power spectrum density of vehicle body vibration displacement, the installation and fixation of the sensor are important links in detecting the accuracy and reliability of the wire displacement data. In some vehicles, because the fixing device of the wire displacement sensor is not fixed or locked to the shock absorber cylinder, the fixed end of the wire head of the wire displacement sensor is not perpendicular to the wire port of the wire displacement sensor. The traditional fixing method is to use plastic tape or cable tie to fix the displacement sensor on the shock absorber. The displacement sensor itself is not firmly fixed and is prone to offset. There is no horizontal and vertical observation and adjustment function. It is difficult to adjust the wire extension position of the displacement sensor during installation, resulting in abnormal wear and breakage of the wire displacement sensor and the outlet of the sensor housing, which makes data collection impossible and causes damage to the sensor.

[0004] In view of this, it is necessary to design a fixing device for a wire displacement sensor, which can firmly install the sensor, easily adjust the position and increase the service life of the sensor. Summary of the invention

[0005] The object of the present invention is to provide a fixing device for a wire displacement sensor, which is achieved by installing two U-shaped pads on the upper and lower parts of a shock absorber and then locking and fixing them with a U-shaped clamp. The U-shaped pads increase the locking force area of ​​the U-shaped clamp, thereby improving the fixing stability and firmness of the shock absorber and the sensor bracket. At the same time, the relative position of the sensor bracket and the shock absorber can be adjusted. With the cooperation of a spirit level, it is beneficial to conveniently adjust the verticality of the wire on the wire displacement sensor, avoid abnormal wear of the wire and the sensor outlet, and affect the detection accuracy and service life of the sensor, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixing device for a wire displacement sensor, comprising a sensor bracket, a protruding structure is provided on the upper end surface of the left side of the sensor bracket, a spirit level is fixedly installed on the horizontal end surface of the end of the sensor bracket on the left side of the protruding structure, a wire displacement sensor is fixedly installed at the corresponding positions of four circular through holes provided on the left side of the sensor bracket, a wire is provided on the wire displacement sensor, and waist-shaped slots are symmetrically provided on the right side of the sensor bracket, U-shaped pads A and U-shaped pads B are fixedly installed on the upper part of the waist-shaped slots, the inner walls of the U-shaped pads A and U-shaped pads B are fitted with the outer walls of the shock absorber, the outer walls of the U-shaped pads A and U-shaped pads B are covered with U-shaped clamp screws, the inner walls of the U-shaped clamp screws are respectively fitted with the outer walls of the U-shaped pads A and U-shaped pads B, the U-shaped clamp screws are respectively passed through the waist-shaped slots and fixedly connected with the U-shaped clamp nuts, and the U-shaped clamp screws and the U-shaped clamp nuts are threadedly connected.

[0007] Preferably, the level is fixedly mounted on the middle part of the side end of the sensor bracket by means of bolts, and the protruding structure is perpendicular to the right end of the level.

[0008] Preferably, four threaded holes are provided on the sensor housing of the wire displacement sensor, and the sensor housing is fixedly mounted on the left bottom of the sensor bracket by bolts.

[0009] Preferably, the U-shaped gasket A is installed on the upper part of the U-shaped gasket B, and a groove structure A is symmetrically provided on the U-shaped gasket A. A groove structure B is provided on the outer wall of the U-shaped gasket B corresponding to the groove structure A, and the groove structure A and the groove structure B are respectively fitted with the outer walls of the corresponding U-shaped clamp screw.

[0010] Preferably, a step structure A is provided at the bottom of the U-shaped gasket A, and a step structure B is provided on the U-shaped gasket B corresponding to the step structure A, and the step structure A and the step structure B are snap-fitted.

[0011] Preferably, the diameter of the cylindrical rod of the U-shaped clamp screw is 8 mm, and the width of the waist-shaped slot hole is 8.5 mm.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The level ensures that the sensor will not be tilted during installation. It is easy to operate and install and adjust, which is beneficial to improve the accuracy of the test data.

[0014] 2. Checking the verticality of the cable with a square ruler is beneficial to improving the verticality of the cable extension and avoid abnormal wear of the cable of the displacement sensor;

[0015] 3. The fixing bracket of the wire displacement sensor is provided with a lateral moving groove, which is beneficial to the position adjustment of the sensor and the wire fixing point;

[0016] 4. The U-shaped fixing bracket on the fixing device of the cable displacement sensor is helpful to lock the shock absorber through the clamp, so that the sensor will not be loosened due to road bumps. At the same time, it is helpful to adjust the position of the cable displacement sensor by rotating the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 A top view of the sensor bracket of the present invention;

[0019] Figure 3 It is the left view of the U-shaped liner structure of the present invention.

[0020] In the figure: 1. sensor bracket; 100. protrusion structure; 101. circular through hole; 102. waist-shaped slot hole; 2. level; 3. wire displacement sensor; 4. wire; 5. U-shaped clamp screw; 6. U-shaped clamp nut; 7. U-shaped gasket A; 71. step structure A; 72. groove structure A; 8. U-shaped gasket B; 81. step structure B; 82. groove structure B; 9. sensor housing; 10. shock absorber. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-3The present invention provides a technical solution: a fixing device for a wire displacement sensor, comprising a sensor bracket 1, a protruding structure 100 is provided on the upper end surface of the left side of the sensor bracket 1, a level 2 is fixedly installed on the horizontal end surface of the end of the sensor bracket 1 on the left side of the protruding structure 100, a wire displacement sensor 3 is fixedly installed at the corresponding position of four circular through holes 101 provided on the left side of the sensor bracket 1, a wire 4 is provided on the wire displacement sensor 3, waist-shaped slots 102 are symmetrically provided on the right side of the sensor bracket 1, U-shaped gaskets A 7 and U-shaped gaskets B 8 are fixedly installed on the upper part of the waist-shaped slots 102, the inner walls of the U-shaped gaskets A 7 and U-shaped gaskets B 8 are in contact with the outer wall of the shock absorber 10, the outer walls of the U-shaped gaskets A 7 and U-shaped gaskets B 8 are sleeved with U-shaped clamp screws 5, and the inner walls of the U-shaped clamp screws 5 are respectively connected to the U-shaped gaskets A 7 and U-shaped gaskets B 8 is fitted to the outer wall, the U-shaped clamp screw 5 passes through the waist-shaped slot hole 102 and is fixedly connected with the U-shaped clamp nut 6, and the U-shaped clamp screw 5 and the U-shaped clamp nut 6 are threadedly connected; the model of the wire displacement sensor 3 can be selected as MPS-S-1000mm-R / V / MA.

[0023] Specifically, the spirit level 2 is fixedly installed in the middle of the side end of the sensor bracket 1 by bolts, and the raised structure 100 is perpendicular to the right end of the spirit level 2; the surface flatness of the sensor bracket 1 on the left side of the raised structure 100 is high, which is beneficial to improving the installation level of the spirit level 2.

[0024] Specifically, four threaded holes are provided on the sensor housing 9 of the wire displacement sensor 3, and the sensor housing 9 is fixedly installed on the left bottom of the sensor bracket 1 by bolts; the outer wall of the bolts matching with the four threaded holes is gap-matched with the circular through hole 101 at the corresponding position on the left side of the sensor bracket 1.

[0025] Specifically, the U-shaped gasket A 7 is installed on the upper part of the U-shaped gasket B 8, and a groove structure A72 is symmetrically provided on the U-shaped gasket A 7. A groove structure B 82 is provided on the outer wall of the U-shaped gasket B 8 corresponding to the groove structure A 72. The groove structure A 72 and the groove structure B82 are respectively fitted with the corresponding outer walls of the U-shaped clamp screw 5, so as to facilitate smooth cooperation with the U-shaped clamp screw 5 during the installation process, and at the same time avoid slippage between the inner wall of the U-shaped clamp screw 5 and the U-shaped gasket B 8 and the U-shaped gasket A 7 during installation, resulting in poor installation and fixing stability.

[0026] Specifically, a step structure A 71 is provided at the bottom of the U-shaped gasket A 7, and a step structure B 81 is provided on the U-shaped gasket B 8 corresponding to the step structure A 71, and the step structure A 71 is snap-fitted with the step structure B 81; this is beneficial for smoothly matching the U-shaped gasket A 7 and the U-shaped gasket B 8 during installation, thereby improving installation efficiency and reducing installation difficulty, and is also beneficial for improving the fixing stability of the U-shaped gasket A 7 and the U-shaped gasket B 8.

[0027] Specifically, the diameter of the cylindrical rod of the U-shaped clamp screw 5 is 8 mm, and the width of the waist-shaped slot 102 is 8.5 mm.

[0028] Working principle: First, fix the wire displacement sensor 3 to the sensor bracket 1 through four bolts, then install the U-shaped gasket A 7 on the upper part of the shock absorber 10, and install the U-shaped gasket B 8 on the bottom of the shock absorber 10. By rotating the U-shaped clamp nut 6, slightly enlarge the U-shaped clamp screw 5 to tighten the U-shaped gasket A 7 and U-shaped gasket B 8’s extrusion pressure is applied to pre-install the sensor bracket 1 on the bottom of the shock absorber 10, and then the position selected by the pull wire 4 is observed, and the position of the pull wire displacement sensor 3 and the sensor bracket 1 are adjusted. By observing the level 2, the sensor bracket 1 is adjusted to see if it is installed flat. The pull wire 4 of the pull wire displacement sensor 3 is connected to the pull wire detection fixed point, and the angle ruler is placed on the mounting bracket to check whether the pull wire 4 is vertical. The verticality of the pull wire 4 of the pull wire displacement sensor 3 is adjusted by adjusting the lateral movement of the sensor bracket 1 and the steering direction of the U-shaped clamp screw 5; and observe whether there is friction between the pull wire 4 and the sensor outlet to ensure that there is a certain gap between the pull wire 4 and the outlet so as not to cause wear of the pull wire 4; finally, the U-shaped clamp nut 6 is rotated to completely tighten the U-shaped clamp screw 5.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a wire displacement sensor, comprising a sensor bracket (1), characterized in that: A protruding structure (100) is provided on the upper end surface on the left side of the sensor bracket (1); a level (2) is fixedly mounted on the horizontal end surface of the end of the sensor bracket (1) on the left side of the protruding structure (100); a pull-wire displacement sensor (3) is fixedly mounted at corresponding positions of four circular through holes (101) provided on the left side of the sensor bracket (1); a pull wire (4) is provided on the pull-wire displacement sensor (3); and waist-shaped slot holes (102) are symmetrically provided on the right side of the sensor bracket (1); the waist-shaped A U-shaped gasket A (7) and a U-shaped gasket B (8) are fixedly installed on the upper part of the slot hole (102); the inner walls of the U-shaped gasket A (7) and the U-shaped gasket B (8) are in contact with the outer wall of the shock absorber (10); the outer walls of the U-shaped gasket A (7) and the U-shaped gasket B (8) are sleeved with a U-shaped clamp screw (5); the U-shaped clamp screw (5) passes through the waist-shaped slot hole (102) and is fixedly connected to the U-shaped clamp nut (6); the U-shaped clamp screw (5) and the U-shaped clamp nut (6) are threadedly connected; The level (2) is fixedly mounted on the middle part of the left end of the sensor bracket (1) by bolts, the protruding structure (100) is perpendicular to the right end of the level (2), the U-shaped gasket A (7) is mounted on the upper part of the U-shaped gasket B (8), the U-shaped gasket A (7) is symmetrically provided with a groove structure A (72), the outer wall of the U-shaped gasket B (8) corresponding to the groove structure A (72) is provided with a groove structure B (82), the groove structure A (72) and the groove structure B (82) are respectively fitted with the outer wall of the corresponding U-shaped clamp screw (5), the bottom of the U-shaped gasket A (7) is provided with a step structure A (71), the U-shaped gasket B (8) corresponding to the step structure A (71) is provided with a step structure B (81), and the step structure A (71) is snap-fitted with the step structure B (81).

2. A wire displacement sensor fixing device according to claim 1, characterized in that: Four threaded holes are provided on the sensor housing (9) of the wire displacement sensor (3), and the sensor housing (9) is fixedly mounted on the left bottom of the sensor bracket (1) by means of bolts.

3. A wire displacement sensor fixing device according to claim 1, characterized in that: The cylindrical rod diameter of the U-shaped clamp screw (5) is 8 mm, and the width of the waist-shaped slot hole (102) is 8.5 mm.

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