CN216525880U

CN216525880U - Angle adjusting device and laser velocimeter period checking device

Info

Publication number: CN216525880U
Application number: CN202122809327.1U
Authority: CN
Inventors: 王金鑫; 严云璐; 何茹
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-13
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses an angle adjusting device, comprising: the frame comprises a plurality of supporting frameworks, and each supporting framework is provided with a slideway; the adjusting assembly comprises a base and a plurality of connecting arms arranged on the periphery of the base, a first accommodating cavity is formed in the middle of the base, a second accommodating cavity is formed in each connecting arm, an elastic rod is arranged in each second accommodating cavity, and the first accommodating cavity is communicated with the second accommodating cavity in a penetrating mode; and the adjusting piece is detachably arranged in the first accommodating cavity. The utility model also discloses a laser velocimeter period checking device comprising the angle adjusting device. The focusing position of the laser head sensor can be accurately finely adjusted; simple structure, easy operation and low cost.

Description

Angle adjusting device and laser velocimeter period checking device

Technical Field

The utility model relates to the field of checking of detection equipment, in particular to an angle adjusting device and a laser velocimeter period checking device.

Background

In the prior art, a laser velocimeter can measure the speed of a target object which vertically passes through two beams of laser, and the laser velocimeter is mainly applied to measuring the average speed of a vehicle in a laser area in a collision test. The period check is self-checking work of a laboratory for evaluating whether the parameters of the detection equipment are stable or not based on actual conditions and practical experience.

The traditional measuring instrument metering management and control is a mode of carrying out verification on a speedometer every year, and the problem that instruments can not be found timely is solved, namely once the result error of the speedometer is found to be large during metering, the speed measurement result that the previous speedometer participates in one-year tests can be possibly shown to be problematic, and the worse condition is that the actual collision speed of all previous-year test projects can be finally caused to be problematic as a traction system sets a target speed and can be adjusted by referring to the actual speed measurement result, so that the safety development, test, collection or verification work of all relevant vehicle type projects is directly influenced.

Therefore, a device capable of regularly and rapidly performing speed measurement checking work on a speed meter is needed.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide an angle adjusting device and a laser velocimeter period checking device, which can implement accurate fine adjustment on the focusing position of a laser head sensor; simple structure, easy operation and low cost.

In order to solve the above technical problem, an embodiment of the present invention provides an angle adjusting apparatus, including: the frame comprises a plurality of supporting frameworks, each supporting framework is provided with a slideway, and the slideways have certain radian; the adjusting assembly comprises a base and a plurality of connecting arms arranged on the periphery of the base, a first accommodating cavity is formed in the middle of the base, a second accommodating cavity is formed in each connecting arm, an elastic rod is arranged in each second accommodating cavity, and the first accommodating cavity is communicated with the second accommodating cavity in a penetrating mode; and the detachable regulating part of installing in first holding chamber, wherein: the first end of one end of the elastic rod extends to the first containing cavity to be abutted against the adjusting piece, and the second end of the other end of the elastic rod is abutted against the slide way.

Wherein, the support skeleton includes: the supporting framework body and with the stabilizer blade that the supporting framework body links to each other, the slide is seted up on the supporting framework body.

The supporting framework is arc-shaped, and the slide way is an arc-shaped groove structure arranged on the supporting framework body.

The four connecting arms are arranged in a same structure and are arranged in a cross shape; the linking arm with the assembly position one-to-one of support skeleton, support skeleton establishes to four, and the structure establishes to the same, by connecting rod fastening connection in proper order.

The base is cylindrical, openings communicated with the first accommodating cavity are formed in two ends of the base, and the adjusting piece is disassembled and assembled through the openings of the first accommodating cavity.

The elastic rod comprises a spring rod, and the first end and the second end are respectively a ball head fixedly connected to the two opposite ends of the spring rod.

The adjusting piece is a conical head adjustable screw, and the position of a ball head of the elastic rod abutted against the conical head adjustable screw is changed by screwing the conical head adjustable screw.

In order to solve the technical problem, the utility model also discloses a laser velocimeter period checking device which comprises the angle adjusting device, a laser head sensor fastened on the angle adjusting device and a single chip microcomputer used for controlling the laser head sensor to radiate or stop working and generating an analog signal.

Wherein, the laser head sensor carries out the angle control scope of controlling the gesture for many supporting frameworks and is 30.

The laser head sensor is arranged in a pitching attitude angle adjusting range of +/-30 degrees relative to the plurality of support frameworks.

The angle adjusting device and the laser velocimeter period checking device provided by the utility model have the following beneficial effects: the angle adjusting device comprises a frame and an adjusting assembly, the adjusting assembly comprises a base and a plurality of connecting arms arranged on the periphery of the base, a first accommodating cavity is formed in the middle of the base, a second accommodating cavity is formed in each connecting arm, an elastic rod is arranged in each second accommodating cavity, and the first accommodating cavity is communicated with the second accommodating cavity in a penetrating mode; and the detachable regulating part of installing in first holding chamber, wherein: the first end head at one end of the elastic rod extends to the first accommodating cavity to abut against the adjusting piece, the second end head at the other end of the elastic rod abuts against the frame slideway, the abutting acting force of the elastic rod connected with the adjusting piece on the slideway is changed, the connecting arms are respectively adjusted and locked along the slideway, the laser head sensor linked on the base is subjected to angle adjustment of left and right and/or pitching postures relative to the frame, and accurate fine adjustment can be carried out; simple structure, easy operation and low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a first angular perspective of the angle adjustment apparatus of the present invention;

FIG. 2 is a perspective view of a second angle of the angle adjustment apparatus of the present invention;

FIG. 3 is a schematic cross-sectional view of the angle adjusting apparatus of the present invention;

FIG. 4 is a schematic view of the assembly of the adjustment assembly, the resilient lever and the adjustment member of the angle adjustment apparatus of the present invention;

FIG. 5 is a schematic view showing the structure of an elastic rod of the angle adjusting apparatus of the present invention;

FIG. 6 is a schematic view of the assembly of the checking device during the laser velocimeter of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 to 6 show an embodiment of an angle adjusting device and a laser velocimeter period checking device according to the present invention.

The method comprises the following steps: the frame T comprises a plurality of supporting frameworks 1, each supporting framework 1 is provided with a slideway 11, and each slideway 11 has a certain radian; the adjusting assembly 2 comprises a base 21, a plurality of connecting arms 22 arranged on the periphery of the base 21 and a laser head sensor 3 fastened on one end side of the base 21, a first accommodating cavity A is arranged in the middle of the base 21, a second accommodating cavity B is arranged on the connecting arm 11, an elastic rod 4 is arranged in the second accommodating cavity B, and the first accommodating cavity A is communicated with the second accommodating cavity B in a penetrating manner; and a regulating member 6 detachably mounted in the first accommodating chamber a, wherein: a first end 41 at one end of the elastic rod 4 extends to the first accommodating cavity A and is abutted against the adjusting piece 6, and a second end 42 at the opposite end is abutted against the slideway 11; by adjusting the position of the first end 41 of the elastic rod 4 in the first accommodating cavity a, the pressing acting force of the elastic rod 4 connected with the adjusting piece 6 on the slideway 11 is changed, so that the connecting arms 22 are respectively adjusted and locked along the slideway 11, and the base 21 is linked with the laser head sensor 3 to perform angle adjustment of left and right and/or pitching postures relative to the supporting frameworks 1.

In specific implementation, the frame T is a supporting frame body formed by assembling a plurality of supporting frameworks 1 and connecting rods 7, and the frame T is arranged in an axisymmetric structure. Wherein: the supporting framework 1 has the following functions: providing a track and constraint for the adjustment assembly 2 to perform multi-angle adjustment positions.

The support frame 1 includes: the supporting framework comprises a supporting framework body 10 and supporting legs 12 connected with the supporting framework body 10, wherein a slide rail 11 is arranged on the supporting framework body 10; the four supporting frameworks 1 are arranged into the same structure and are sequentially fastened and connected into a whole by the connecting rods 7. The supporting framework body 10 is an arc-shaped piece with a certain radian, and the slide way 11 is arranged on the supporting framework body and is of a groove structure.

Further, the adjustment assembly 2 includes a base 21, a plurality of connecting arms 22 arranged on an outer periphery of the base 21, and a laser head sensor 3 fastened to one end side of the base 21. The base 21 is cylindrical, openings communicated with the first accommodating cavity A are formed in two ends of the base, and the adjusting piece 6 can be inserted into the first accommodating cavity A through the opening end of the first accommodating cavity A to be adjusted. For example: one end opening of the first accommodating cavity A is a threaded hole to realize the adjustment of the adjusting piece 6.

The connecting arm 22 is a hollow thin tube with openings at two ends, and a second accommodating cavity B for accommodating the elastic rod 4 is formed in the middle of the connecting arm. The connecting arms 11 are four and the structure is the same, and the four connecting arms 22 are arranged in a cross shape. The connecting arms 22 correspond to the mounting positions of the support frame 1 one to one.

Further, the laser head sensor 3 is fastened and connected with the base 21 through a sensor support frame 5, and the sensor support frame 5 is an L-shaped metal piece. In specific implementation, a mounting hole is formed at one end of the sensor support frame 5, and the sensor support frame 5 is fastened to one end of the base 21 in a manner of fitting with a mounting hole 21a formed at one end of the base 21. Meanwhile, a fixing hole for fastening the laser head sensor 3 is further formed in the sensor support frame 5, so that the laser head sensor 3 is fastened at one end side of the base 21 through the sensor support frame 5.

Further, the base 21 is further provided with a lead through hole 21b for passing through the dupont lead 8, and in specific implementation, the dupont lead 8 passes through the lead through hole 21b, and two ends of the dupont lead are respectively connected with the laser head sensor 3 and the single chip microcomputer 9. The singlechip 9 has the functions of: and controlling the laser head sensor to radiate or stop working, and generating an analog signal.

Further, the elastic rod 4 is a ball head jointed short rod structure, and includes a spring rod, and the first end 41 and the second end 42 are respectively a ball head fastened to opposite ends of the spring rod. The elastic rod 4 is accommodated in the second accommodation chamber B. In practice, the first end 41 of one end of the elastic rod 4 extends to the first accommodating cavity a, and the second end 42 of the opposite end is pressed against the slideway 11.

Furthermore, the adjusting piece 6 is a conical head adjustable screw, the middle and rear ends of the adjusting piece are externally provided with threads, and the front end part of the adjusting piece is in a smooth conical flat head shape. The function of the adjusting piece 6 is: the position of the adjusting piece 6 in the first accommodating cavity a is changed by screwing the conical head adjustable screw. When the adjustable screw with the conical head rotates forwards in the first accommodating cavity a for adjustment, the space of the conical through hole at the front end in the first accommodating cavity a is reduced, and the adjustable screw with the conical head can extrude the first end 41 of the elastic rod 4, so that the compression force of the elastic rod 4 can be adjusted. When the conical-head adjustable screw is rotated backwards to adjust, the acting force on the first end head 41 of the elastic rod 4 is reduced.

In the specific implementation of the laser velocimeter period checking device in this embodiment, 4 elastic rods 4 are correspondingly assembled in the connecting arm 22, a first end 41 at one end of each elastic rod 4 extends to the first accommodating cavity a, and a second end 42 at the opposite end is pressed against the slide rail 11; the pressing force of the elastic rod 4 connected with the adjusting piece 6 on the slideway 11 is changed by adjusting the position of the first end 41 of the elastic rod 4 in the first accommodating cavity A.

That is to say, when the adjustable screw with conical head is adjusted in the first receiving cavity a of the base 21 in a forward rotating manner, the space of the conical through hole at the front end of the first receiving cavity a is reduced, the adjustable screw with conical head can extrude the first end 41 of the elastic rod 4, so as to adjust the compression force of the elastic rod 4, and through the transmission of the spring rod, the interaction force between the second end 42 and the slideway 11 is increased, and similarly, when the adjustable screw with conical head is adjusted in a backward rotating manner, the interaction force can be reduced, and thus, the adjustment and locking of the plurality of connecting arms 22 along the slideway 11 can be realized by adjusting the adjusting part 6. The base 21 is linked with the laser head sensor 3 to perform angle adjustment of the left and right and/or pitch attitude with respect to the plurality of support frames 1. For example, in the present embodiment, the adjustment assembly 2 performs the left-right angle adjustment R with respect to the plurality of support frames 1 within a range of ± 30 °. The pitch angle of the adjusting assembly 2 relative to the plurality of supporting frameworks 1 is adjusted within a value range of +/-30 degrees.

Preferably, in the embodiment, the slide ways respectively have 60-degree angle ranges along the upper part, the lower part or the left part and the right part, so that the angle adjusting range of the left posture and the right posture of the laser head sensor relative to the plurality of supporting frameworks is +/-30 degrees; the angle adjusting range of the pitching attitude of the laser head sensor relative to the plurality of supporting frameworks is +/-30 degrees.

Because the laser head sensor module 3 passes through the base 21 through the DuPont wire 8 and is connected to the singlechip 9, through the high-precision timing control of the singlechip 9 crystal oscillator, realize a series of accurate laser radiation and stop action, accurately generate various crash test speed analog signals, and achieve the purpose of period checking through the error contrast of the speed measurement reading at the receiving end of the checked laser velocimeter and the preset theoretical speed of the singlechip 9.

It can be understood that: the angle adjusting device in this embodiment can also be applied to other components, which are not limited to the angle adjustment of the laser head sensor. For example: only other components needing to be adjusted are required to be connected with the adjusting assembly in a fastening mode, and the adjusting assembly is adjusted in a rotating mode, so that the purpose of adjusting angles of other components of the checking device during the laser velocimeter is achieved.

The following specifically shows a flow of checking the laser velocimeters during the speed measurement period by the two laser velocimeter period checking devices.

In fig. 6, the receiving ports of the laser velocimeter to be checked are C1 and C2, respectively. Firstly, two laser velocimeters period checking devices are adhered to the positions of a receiving end port C1 and a receiving end port C2 of the checked laser velocimeter through supporting legs 12 of respective supporting frameworks 1 through ultra-strong metal double-sided adhesive tapes, after a single chip microcomputer 9 is started to enable a laser head sensor module 3 to be in a laser emitting state, an adjusting piece 6, namely a conical head adjustable screw, is rotated backwards by using an inner hexagonal wrench, and the interaction force between a plurality of connecting arms 22 of an adjusting assembly 2 and a plurality of supporting frameworks 1 is reduced. The specific adjustment manner is the same as the manner of changing the pressing acting force of the elastic rod 4 connected with the adjusting piece 6 on the slideway 11 by adjusting the position of the first end 41 of the elastic rod 4 in the first accommodating cavity a, and is not described in detail.

And after the left-right and pitching postures of the adjusting assembly 2 are adjusted and the laser focusing position of the laser head sensor module 3 is accurately aligned with the positions of the receiving end port C1 and the port C2 of the checked laser velocimeter, an inner hexagonal wrench is used for forward rotating the conical head adjustable screw and increasing the interaction force of the adjusting assembly 2 and the supporting framework 1 to realize the elastic locking of the integral angle posture of the adjusting assembly 2.

And finally, starting the speed measurement checking function of the singlechip 9 to ensure that the lasers received by the receiving end port C1 and the receiving end port C2 of the checked laser velocimeter are sequentially and regularly interrupted and emitted, so that the checking device realizes the generation of various analog speed signals during the two laser velocimeters, and the aim of checking during the speed measurement is fulfilled by comparing the speed measurement readings of the receiving ends of the checked laser velocimeters with the error of the expected theoretical speed. The risk that high cost test failure is caused to the safe research and development of the vehicle type project due to the fact that speed measurement errors are not found in time is avoided, and the reliability of the measurement result and the precision of test implementation are guaranteed.

The angle adjusting device and the laser velocimeter period checking device comprising the angle adjusting device have the following beneficial effects:

firstly, through the position of the adjusting elastic rod in the first accommodating cavity, the abutting acting force of the elastic rod connected with the adjusting piece on the slide way is changed, so that the connecting arms are adjusted and locked along the slide way respectively, the base is linked with the laser head sensor to perform angle adjustment of left and right and/or pitching postures relative to the supporting frameworks, the focusing position of the laser head sensor can be accurately finely adjusted, and the laser head sensor has good assembling adaptation, position adjustment and function secondary expansion capacity.

And secondly, the laser velocimeter can be periodically checked under various speed measurement working conditions quickly and stably, and a stable and accurate theoretical speed analog signal is generated so as to provide error assessment for accurate actual speed measurement and speed indication.

Thirdly, the device has simple structure, low cost, easy manufacture and easy implementation.

Claims

1. An angle adjusting apparatus, comprising:

the frame comprises a plurality of supporting frameworks, and each supporting framework is provided with a slideway;

the adjusting assembly comprises a base and a plurality of connecting arms arranged on the periphery of the base, a first accommodating cavity is formed in the middle of the base, a second accommodating cavity is formed in each connecting arm, an elastic rod is arranged in each second accommodating cavity, and the first accommodating cavity is communicated with the second accommodating cavity in a penetrating manner; and

the detachable install in the regulating part in first holding chamber, wherein:

the first end of the elastic rod extends to the first accommodating cavity to be abutted against the adjusting piece, and the second end is abutted against the slide way.

2. The angle adjustment apparatus of claim 1, wherein the support frame comprises: the supporting framework body and with the stabilizer blade that the supporting framework body links to each other, the slide is seted up on the supporting framework body.

3. The angle adjusting device of claim 2, wherein the supporting frame is arc-shaped, and the slide way is an arc-shaped groove structure formed on the supporting frame body.

4. The angle adjusting apparatus of claim 2, wherein the connecting arms are four in number and have the same configuration, and the four connecting arms are arranged in a cross shape;

the linking arm with the assembly position one-to-one of support skeleton, support skeleton establishes to four, and the structure establishes to the same, by connecting rod fastening connection in proper order.

5. The angle adjusting device of claim 1, wherein the base is cylindrical, openings communicating with the first receiving cavity are formed at both ends of the base, and the adjusting member is detachably mounted through the openings of the first receiving cavity.

6. The angle adjustment apparatus of claim 1, wherein said resilient lever comprises a spring rod, and said first end and said second end are each a ball head fixedly attached to opposite ends of said spring rod.

7. The angle adjusting apparatus according to claim 1, wherein the adjusting member is a conical head adjustable screw which is screwed to change a position of a ball of the elastic rod abutting thereon.

8. A laser velocimeter period checking device, characterized by comprising an angle adjusting device according to any one of claims 1-7, a laser head sensor fastened to the angle adjusting device, and a single-chip microcomputer for controlling the emission or stop of the laser head sensor and generating an analog signal.

9. The laser velocimeter duration checking device according to claim 8, wherein the laser head sensor is angularly adjustable in a side-to-side attitude with respect to the plurality of support frames within a range of ± 30 °.

10. The laser velocimeter duration checking device of claim 8, wherein the laser head sensor is angularly adjustable in pitch attitude with respect to the plurality of support frames to a range of ± 30 °.