Range finder calibration device

Abstract

The utility model provides a distance measuring instrument calibration device, which comprises a laser distance measuring instrument, a mounting plate and a distance measuring mechanism, and is characterized in that the mounting plate is provided with a clamping mechanism for clamping the laser distance measuring instrument; the distance measuring mechanism comprises a moving plate and a feedback plate, the moving plate is slidably mounted in the mounting plate, a limiting groove is formed in the moving plate, a connecting block is connected to the mounting plate, and a limiting mechanism used for being matched with the limiting groove to limit the moving plate is slidably mounted on the connecting block; a positioning plate is mounted at the end, away from the connecting block, of the mounting plate, a feedback plate is fixedly connected to the end, away from the positioning plate, of the moving plate and corresponds to the positioning groove, and scale marks are arranged on the moving plate. The target platform can solve the problems that in the prior art, a target platform used for testing is large in size, large in occupied space and inconvenient to store and move.

Description

Technical Field

[0001] The utility model relates to the technical field of distance measuring equipment, in particular to a distance measuring device calibration device. Background Art

[0002] A rangefinder is a portable measuring instrument that uses laser as a carrier wave and features diffuse reflection measurement of the target surface. It measures short-range distances in space using methods such as pulse and phase methods. To ensure its accuracy and applicability, the laser calibration instrument needs to be calibrated before use. The calibration steps mainly include: fixing the laser rangefinder, fixing the target to be measured, taking measurement readings, and moving the laser calibration target for repeated testing; taking multiple measurements of the laser standard target at the same position and taking the average value, and comparing the average value with the standard distance to calculate the deviation. If the deviation value is less than or equal to the standard deviation, it meets the specified accuracy and can be used normally. If the deviation value is greater than the standard deviation, error correction is required before use.

[0003] However, in the prior art, during the inspection process, the staff needs to use a tape measure to measure the distance between multiple target platforms and the wall and then check the difference value for calibration. However, this method is not only cumbersome, but also difficult to ensure the accuracy of the test value. In order to solve the problems existing in the prior art, the utility model with publication number CN202223137834.6 discloses a laser rangefinder calibration device (hereinafter referred to as: prior art 1), comprising a base, a mounting frame arranged on the base, and a movable target platform. The mounting frame is provided with a mounting platform, and the mounting platform is provided with a mounting assembly for fixing the laser rangefinder; the movable target platform includes a movable seat and a reflector, and a telescopic slide is fixedly connected to the base, and the movable seat is fixedly connected to the end of the telescopic slide away from the base; a tape measure is installed at the bottom of the mounting platform, and a connecting member is provided between the tape measure and the movable seat.

[0004] Although the prior art 1 facilitates flexible adjustment of the distance between the sliding seat and the mounting platform by providing a telescopic slide and a tape measure, and can conveniently and quickly take readings through the tape measure, the target platform used for testing in the prior art 1 is large in size, occupies a lot of space, and is inconvenient to store and move. Utility Model Content

[0005] The purpose of the utility model is to provide a rangefinder calibration device, which can solve the problems in the prior art that the target platform used for testing is large in size, occupies a lot of space, and is inconvenient to store and move during actual use.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A rangefinder calibration device includes a laser rangefinder, a mounting plate and a distance measuring mechanism, wherein the mounting plate is provided with a clamping mechanism for clamping the laser rangefinder;

[0008] The distance measuring mechanism includes a moving plate and a feedback plate. The moving plate is slidably mounted in the mounting plate. A limit slot is provided on the moving plate. The mounting plate is connected to a connecting block. A limit mechanism for cooperating with the limit slot to limit the moving plate is slidably mounted on the connecting block.

[0009] A positioning plate is installed at one end of the mounting plate away from the connecting block. The feedback plate is fixedly connected to the end of the moving plate away from the positioning plate. The feedback plate is arranged corresponding to the positioning groove, and a scale line is arranged on the moving plate.

[0010] Preferably, the limiting mechanism includes a limiting block and a spring. The limiting block is slidably mounted on the connecting block, and the limiting block and the connecting block are connected via the spring.

[0011] Preferably, a first locking bolt is threadedly connected to the connecting block, and the first locking bolt is used to drive the limiting block to cooperate with the limiting groove to lock the movable plate.

[0012] Preferably, a ball cavity is provided at one end of the connecting block close to the movable plate, and a ball is connected and rolled in the ball cavity.

[0013] Preferably, the clamping mechanism includes a driving mechanism and two clamping blocks, and the mounting plate is symmetrically provided with sliding grooves, the two clamping blocks are slidably mounted in the sliding grooves, and the driving mechanism is mounted on the mounting plate and is used to drive the clamping blocks to move toward or away from each other along the direction of the sliding grooves.

[0014] Preferably, a square clamping groove and an arc-shaped clamping groove are provided on the clamping block, and the square clamping groove is communicated with the arc-shaped clamping groove.

[0015] Preferably, the driving mechanism includes a bidirectional screw and a driving motor. The bidirectional screw is rotatably mounted on the mounting plate. The two clamping blocks are symmetrically threadedly connected to the left and right ends of the bidirectional screw. The driving motor is mounted on the mounting plate and is used to drive the bidirectional screw to rotate.

[0016] Preferably, anti-slip pads are provided in the square clamping groove and the arc-shaped clamping groove.

[0017] Preferably, a positioning groove for preliminarily positioning the distance measuring mechanism is provided on the positioning plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the utility model, a laser rangefinder is provided with a laser rangefinder light. When the laser rangefinder needs to be calibrated, the positioning plate provided can ensure that the laser rangefinder and the feedback plate are set correspondingly to prevent the laser rangefinder from being offset. The laser rangefinder can be clamped and fixed by the clamping mechanism.

[0020] After the clamping mechanism clamps the laser rangefinder, the limiting mechanism slidably installed on the connecting block cooperates with the slide groove provided on the movable plate to position the movable plate; scale lines are provided on the movable plate, and by pulling the movable plate to move, the feedback plate fixedly connected to the movable plate can be driven to move, which can meet the test of different distances by the laser rangefinder; by observing and comparing the scale distance on the movable plate with the value on the laser rangefinder, the error value of the laser rangefinder can be measured, and then the laser rangefinder can be calibrated by operating the settings to achieve the role of auxiliary calibration, which not only improves the accuracy of the calibration, but also is very quick and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the connection relationship between the limiting mechanism and the connecting block in the utility model.

[0024] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 101-feedback plate, 102-mounting plate, 103-distance measuring mechanism, 104-clamping mechanism, 105-moving plate, 106-positioning groove, 107-limiting groove, 108-connecting block, 109-limiting mechanism, 110-positioning plate, 111-limiting block, 112-spring, 113-first locking bolt, 114-ball, 115-clamping block, 116-slide groove, 117-square clamping groove, 118-arc clamping groove, 119-bidirectional screw, 120-handwheel. DETAILED DESCRIPTION

[0027] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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 cannot be understood as a limitation on the embodiments of the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] See Figure 1-Figure 3 , this embodiment discloses a rangefinder calibration device, including a laser rangefinder, a mounting plate 102 and a distance measuring mechanism 103, wherein the mounting plate 102 is provided with a clamping mechanism 104 for clamping the laser rangefinder;

[0036] The distance measuring mechanism 103 includes a moving plate 105 and a feedback plate 101. The moving plate 105 is slidably mounted in the mounting plate 102. A limiting groove 107 is provided on the moving plate 105. The mounting plate 102 is connected to a connecting block 108. A limiting mechanism 109 is slidably mounted on the connecting block 108 for cooperating with the limiting groove 107 to limit the moving plate 105.

[0037] A positioning plate 110 is installed at one end of the mounting plate 102 away from the connecting block 108 , and the feedback plate 101 is fixedly connected to one end of the moving plate 105 away from the positioning plate 110 . The feedback plate 101 and the positioning plate 110 are arranged correspondingly, and a scale line is set on the moving plate 105 .

[0038] In the present invention, a laser rangefinder is provided with a laser rangefinder lamp, a movable groove is provided on the mounting plate 102, and the movable plate 105 is slidably installed in the movable groove; when the laser rangefinder needs to be calibrated, the laser rangefinder is first placed in the limiting area formed between the clamping mechanisms 104, and the laser rangefinder is moved so that the laser rangefinder lamp moves to a position corresponding to the positioning plate 110, and then the laser rangefinder can be clamped and fixed by the clamping mechanism 104. By setting the positioning plate 110, it can be ensured that the laser rangefinder lamp is set correspondingly to the feedback plate 101, thereby preventing the laser rangefinder from offsetting. After the clamping mechanism 104 clamps the laser rangefinder, the movable plate 105 is pulled to move the movable plate 105 toward the end away from the positioning plate 110; during the movement of the movable plate 105, the limiting mechanism 109 slidably mounted on the connecting block 108 cooperates with the sliding groove 116 provided on the movable plate 105 to position the movable plate 105, and the limiting mechanism 109 on the movable plate 105 can prevent the movable plate 105 from slipping out of the adjustment groove; a scale line is provided on the movable plate 105, and by pulling the movable plate 105 to move, the movable plate 105 can be driven to move the movable plate 105 fixedly connected to the movable plate 10 5 moves, which can meet the test of different distances by the laser rangefinder; after adjusting the movable plate 105 to the predetermined position, the laser rangefinder is started, and the test point on the laser rangefinder will emit a laser and irradiate the laser onto the feedback plate 101. At this time, the laser rangefinder will feedback the distance value. By observing and comparing the scale distance on the movable plate 105 with the value on the laser rangefinder, the error value of the laser rangefinder can be measured. After that, the laser rangefinder can be calibrated by operating the settings to achieve the role of auxiliary calibration, which can not only improve the accuracy of calibration, but also be very quick and simple in operation.

[0039] The limiting mechanism 109 includes a limiting block 111 and a spring 112. The limiting block 111 is slidably mounted on the connecting block 108, and the limiting block 111 and the connecting block 108 are connected by the spring 112. When the movable plate 105 is pulled to move away from the positioning plate 110, the movable plate 105 contacts the limiting block 111, squeezing the limiting block 111. The spring 112 connecting the limiting block 111 and the connecting block 108 is compressed. When the limiting groove 107 provided on the movable plate 105 moves to a position corresponding to the limiting block 111, the limiting block 111 is pressed tightly against the limiting groove 107 under the action of the spring 112 to limit the movable plate 105.

[0040] As a further optimization, a first locking bolt 113 is threadedly connected to the connecting block 108. The first locking bolt 113 is used to drive the limit block 111 to engage with the limit groove 107 to lock the movable plate 105. When the movable plate 105 moves to a predetermined position, the first locking bolt 113 can be rotated to move the first locking bolt toward the limit block 111 until it contacts the limit block 111. The first locking bolt 113 then presses the limit block 111 against the limit groove 107 to secure the movable plate 105, thereby further improving the stability of the laser rangefinder during calibration.

[0041] The end of the connecting block 108 near the movable plate 105 is provided with a ball cavity, in which a ball 114 is connected and rolls. The provision of the ball 114 can convert the sliding friction between the stop block 111 and the movable plate 105 into rolling friction, thus preventing the stop block 111 from scratching the movable plate 105 during movement.

[0042] Further optimized, the clamping mechanism 104 includes a drive mechanism and two clamping blocks 115. Slide grooves 116 are symmetrically provided on the mounting plate 102. The two clamping blocks 115 are slidably mounted within the slide grooves 116. The drive mechanism is mounted on the mounting plate 102 and is used to drive the clamping blocks 115 to move toward or away from each other along the direction of the slide grooves 116. Driven by the drive mechanism, the two clamping blocks 115 can clamp laser rangefinders of different sizes.

[0043] Example 2

[0044] See Figure 1-Figure 3 This embodiment is a further improvement on the first embodiment. A square clamping groove 117 and an arcuate clamping groove 118 are provided on the clamping block 115. The square clamping groove 117 and the arcuate clamping groove 118 are connected. The square clamping groove 117 and the arcuate clamping groove 118 can clamp laser rangefinders of different shapes, further improving the practicality of the calibration device.

[0045] The drive mechanism includes a bidirectional screw 119 and a handwheel 120. The bidirectional screw 119 is rotatably mounted on the mounting plate 102. Two clamping blocks 115 are symmetrically threaded onto the left and right ends of the bidirectional screw 119. The handwheel 120 is fixedly sleeved onto the end of the bidirectional screw 119 that is located outside the mounting plate 102. When the operator rotates the bidirectional screw 119 using the handwheel 120, the clamping blocks 115, which are threaded onto the bidirectional screw 119, can move toward or away from each other along the direction of the slide 116 under the drive of the bidirectional screw 119 to clamp laser rangefinders of different sizes.

[0046] Further optimization, anti-skid pads are provided in the square clamping groove 117 and the arc clamping groove 118. The anti-skid pads are made of rubber material, and the provision of the anti-skid pads can prevent the square clamping groove 117 and the arc clamping groove 118 from scratching the laser rangefinder during the clamping process.

[0047] The positioning plate 110 is provided with a positioning groove 106 for preliminarily positioning the distance measuring mechanism 103. The positioning groove 106 can preliminarily position the laser rangefinder placed on the mounting plate 102, thereby facilitating the clamping block 115 to clamp the laser rangefinder.

[0048] Example 3

[0049] See Figure 1-Figure 3 This embodiment is substantially the same as the first or second embodiment, except that, in this embodiment, the feedback plate 101 is slidably mounted on the end of the movable plate 105 away from the positioning plate 110. The feedback plate 101 is provided with a plurality of threaded holes, and second locking bolts are threadedly connected to the movable plate 105, which engage with the threaded holes to lock the feedback plate 101. The threaded holes are evenly spaced from top to bottom on the side ends of the feedback plate 101. When clamping laser rangefinders at different heights, the feedback plate 101 is vertically slid up and down to ensure that it always aligns with the position of the laser rangefinder light mounted on the laser rangefinder. After the feedback plate 101 is moved to the position corresponding to the laser rangefinder light, the second locking bolts are rotated to engage with the threaded holes, thereby locking the feedback plate 101.

[0050] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rangefinder calibration device, comprising a laser rangefinder, characterized in that: It also includes a mounting plate (102) and a distance measuring mechanism (103), wherein the mounting plate (102) is provided with a clamping mechanism (104) for clamping the laser measuring instrument; The distance measuring mechanism (103) includes a moving plate (105) and a feedback plate (101), the moving plate (105) is slidably mounted in the mounting plate (102), a limiting groove (107) is provided on the moving plate (105), a connecting block (108) is connected to the mounting plate (102), and a limiting mechanism (109) is slidably mounted on the connecting block (108) for cooperating with the limiting groove (107) to limit the moving plate (105); the limiting mechanism (109) includes a limiting block (111) and a spring (112), the limiting block (111) is slidably mounted on the connecting block (108), and the limiting block (112) is provided on the connecting block (108). 11) is connected to the connecting block (108) by a spring (112); a first locking bolt (113) is threadedly connected to the connecting block (108), and the first locking bolt (113) is used to drive the limiting block (111) to cooperate with the limiting groove (107) to lock the movable plate (105); by rotating the first locking bolt (113), the first locking bolt can be moved toward the limiting block (111) until it contacts the limiting block (111), and the first locking bolt (113) can fix the movable plate (105) after the limiting block (111) is pressed against the limiting groove (107); The feedback plate (101) is slidably mounted on an end of the movable plate (105) away from the positioning plate (110), a plurality of threaded holes are provided on the feedback plate (101), and a second locking bolt is threadedly connected on the movable plate (105) for locking the feedback plate (101) after engaging with the threaded holes; A positioning plate (110) is installed at one end of the mounting plate (102) away from the connecting block (108), the feedback plate (101) is fixedly connected to one end of the moving plate (105) away from the positioning plate (110), the feedback plate (101) and the positioning plate (110) are arranged correspondingly, and a scale line is provided on the moving plate (105).

2. A rangefinder calibration device according to claim 1, characterized in that: A ball cavity is provided at one end of the connecting block (108) close to the movable plate (105), and a ball (114) is connected and rolling in the ball cavity.

3. The rangefinder calibration device according to claim 1, characterized in that: The clamping mechanism (104) includes a driving mechanism and two clamping blocks (115). Slide grooves (116) are symmetrically provided on the mounting plate (102). The two clamping blocks (115) are slidably mounted in the slide grooves (116). The driving mechanism is mounted on the mounting plate (102) and is used to drive the clamping blocks (115) to move toward or away from each other along the direction of the slide grooves (116).

4. A rangefinder calibration device according to claim 2, characterized in that: A square clamping groove (117) and an arc-shaped clamping groove (118) are provided on the clamping block (115), and the square clamping groove (117) is communicated with the arc-shaped clamping groove (118).

5. The rangefinder calibration device according to claim 2, characterized in that: The driving mechanism includes a bidirectional screw (119) and a handwheel (120), wherein the bidirectional screw (119) is rotatably mounted on the mounting plate (102), two clamping blocks (115) are symmetrically threadedly connected to the left and right ends of the bidirectional screw (119), and the handwheel (120) is fixedly sleeved on one end of the bidirectional screw (119) located outside the mounting plate (102).

6. The rangefinder calibration device according to claim 4, characterized in that: Anti-slip pads are provided in the square clamping groove (117) and the arc-shaped clamping groove (118).

7. The rangefinder calibration device according to claim 1, characterized in that: A positioning groove (106) for preliminarily positioning the distance measuring mechanism (103) is provided on the positioning plate (110).

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