Portable door hinge coaxiality detection device
By combining a laser emitter with a photosensitive sensor, along with a mechanical clamping, positioning, and adjustment mechanism, a portable door hinge coaxiality detection device has been developed, achieving efficient and high-precision detection. This solves the problems of insufficient portability and accuracy in existing technologies and is particularly suitable for the synchronous coaxiality evaluation of multiple hinges under complex working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG JIANQIAO MASCH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-05-08
AI Technical Summary
In the existing technology, door hinge coaxiality detection devices are not portable, efficient and accurate. In particular, they are difficult to achieve synchronous coaxiality assessment of multiple hinges in complex environments, resulting in low installation efficiency and low accuracy.
By using a laser emitter and a photosensitive sensor in conjunction with a mechanical clamping positioning and adjustment mechanism, non-contact high-precision detection can be achieved. The adjustment mechanism can also adapt to different hinge specifications and support synchronous coaxiality detection of multiple hinges.
By combining mechanical clamping and positioning with optical detection, non-contact high-precision detection is achieved, avoiding measurement errors caused by contact pressure in traditional mechanical probes. The mounting base has three sets of synchronously operating clamping and positioning and optical detection devices, which enable rapid adaptive adjustment under complex working conditions.
Smart Images
Figure CN224216052U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coaxiality detection technology, specifically a portable door hinge coaxiality detection device. Background Technology
[0002] In the installation and maintenance of doors, windows, furniture, and industrial equipment, the coaxiality of hinges directly affects their smoothness of opening and closing and their service life. Traditional testing methods often rely on manual visual inspection or point-by-point measurement using tools such as calipers and dial indicators, which is not only inefficient but also difficult to guarantee accuracy. Especially in high-altitude operations or confined spaces, large testing equipment is difficult to carry, while simple methods cannot provide reliable data. Therefore, there is an urgent need for a portable, efficient, and high-precision hinge coaxiality testing device to meet the needs of rapid on-site testing and reduce reliance on the experience of operators.
[0003] Currently, some coaxiality testing devices use mechanical probes or optical measurements, but they usually need to be fixed on a dedicated platform, which cannot adapt to different hinge specifications or complex installation environments. Moreover, existing technologies are mostly for single hinge testing and lack solutions for simultaneous coaxiality evaluation of multiple hinges, such as the upper, middle and lower sets. This results in repeated adjustments after installation, low work efficiency and low testing accuracy. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a portable door hinge coaxiality detection device, which solves the problems mentioned in the background.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the present invention provides the following technical solution: a portable door hinge coaxiality detection device, comprising a base and adjustment seats symmetrically distributed on both sides of the base. The base and the two sets of adjustment seats are provided with positioning mechanisms. A laser emitter is fixedly installed on the right adjustment seat, and a photosensitive sensor is fixedly installed on the left adjustment seat. The base is provided with an adjustment mechanism for adjusting the distance between the two sets of adjustment seats.
[0008] The positioning mechanism includes a mounting base fixedly installed on a base and two sets of adjusting seats. A turntable is provided inside the mounting base. The turntable is rotatably connected to the mounting base through a rotating frame. A toothed ring is sleeved on the rotating frame. A rack is slidably installed inside the mounting base. A ring tooth is fixedly installed on the turntable. Three sets of ring-shaped clamping rods are provided inside the mounting base. All three sets of clamping rods are meshed with the turntable through the ring tooth. The adjusting mechanism includes a mounting rod fixedly installed on the base. Two sets of symmetrically distributed first telescopic rods are slidably installed inside the mounting rod. A second telescopic rod is slidably installed inside each of the two sets of first telescopic rods. The end of the second telescopic rod away from the mounting rod is fixedly connected to the corresponding adjusting seat.
[0009] Preferably, the photosensitive sensor is configured correspondingly to the laser emitter, and both the laser emitter and the photosensitive sensor are aligned with the center of the mounting base.
[0010] Preferably, the rack is meshed with the gear ring, a cylinder is fixedly installed in the mounting base, and the rack is fixedly connected to the output end of the cylinder piston rod.
[0011] Preferably, a cover plate is fixedly installed on the mounting base. The cover plate has three sets of sliding grooves corresponding to the clamping rods. Each of the three sets of clamping rods has a slider fixedly installed on it, and the slider is corresponding to the sliding groove. The clamping rods are slidably connected to the cover plate through the slider and the sliding groove.
[0012] Preferably, a bidirectional screw is rotatably installed inside the mounting rod, and a screw tube is rotatably installed inside each of the two sets of first telescopic rods. A first bevel gear is sleeved on the bidirectional screw, and a second bevel gear is rotatably installed inside the mounting rod, and the second bevel gear meshes with the first bevel gear.
[0013] Preferably, the bidirectional screw has two sets of symmetrically distributed keyways, and each set of screw tubes has two sets of symmetrically distributed key blocks, with the key blocks corresponding to the keyways. The screw tubes are slidably connected to the bidirectional screw through the key blocks and keyways.
[0014] Preferably, the two ends of the bidirectional screw pass through two corresponding sets of first telescopic rods and are threadedly connected to the two sets of first telescopic rods respectively, and the two sets of screw tubes pass through the corresponding second telescopic rods and are threadedly connected to the second telescopic rods respectively.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a portable door hinge coaxiality detection device, which has the following advantages:
[0017] Non-contact, high-precision detection is achieved through the combination of a laser emitter and a photosensitive sensor, avoiding measurement errors caused by contact pressure in traditional mechanical probes. The three sets of synchronously moving clamping rods in the mounting base, in conjunction with the ring gear transmission system, can quickly clamp hinge shafts of different diameters, ensuring that the detection benchmark coincides with the actual axis of the hinge. The expandable adjustment base allows a single device to complete the synchronous coaxiality detection of multiple hinges on the door. Through the cooperation of a two-section telescopic rod and a bevel gear transmission system, the device maintains portability while achieving precise fine-tuning of the detection spacing, making it particularly suitable for on-site installation and debugging scenarios, effectively reducing repeated adjustment work after door installation. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the positioning mechanism of this utility model;
[0021] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model;
[0022] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the diagram.
[0023] In the diagram: 1. Base; 2. Adjustment seat; 3. Laser emitter; 4. Photosensitive sensor; 5. Positioning mechanism; 501. Mounting seat; 502. Turntable; 503. Rotating frame; 504. Gear ring; 505. Rack; 506. Cylinder; 507. Ring gear; 508. Clamping rod; 509. Cover plate; 510. Slide groove; 511. Slider; 6. Adjustment mechanism; 601. Mounting rod; 602. First telescopic rod; 603. Second telescopic rod; 604. Bidirectional screw; 605. Keyway; 606. Screw tube; 607. Key block; 608. First bevel gear; 609. Second bevel gear. Detailed Implementation
[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0025] Figures 1-4In one embodiment of this utility model, a portable door hinge coaxiality detection device includes a base 1 and adjusting seats 2 symmetrically distributed on both sides of the base 1. Positioning mechanisms 5 are provided on both the base 1 and the two sets of adjusting seats 2. A laser emitter 3 is fixedly installed on the right adjusting seat 2, and a photosensitive sensor 4 is fixedly installed on the left adjusting seat 2. An adjusting mechanism 6 for adjusting the distance between the two sets of adjusting seats 2 is provided on the base 1. The positioning mechanism 5 includes a mounting base 501 fixedly installed on the base 1 and the two sets of adjusting seats 2. A turntable 502 is provided inside the mounting base 501. The turntable 502 is rotatably connected to the mounting base 501 via a rotating frame 503. A toothed ring 504 is sleeved on 503, a rack 505 is slidably installed in the mounting base 501, an annular tooth 507 is fixedly installed on the turntable 502, and three sets of annularly distributed clamping rods 508 are provided in the mounting base 501. All three sets of clamping rods 508 are connected to the turntable 502 through the annular tooth 507. The adjusting mechanism 6 includes a mounting rod 601 fixedly installed on the base 1. Two sets of symmetrically distributed first telescopic rods 602 are slidably installed in the mounting rod 601, and a second telescopic rod 603 is slidably installed in each of the two sets of first telescopic rods 602. The end of the second telescopic rod 603 away from the mounting rod 601 is fixedly connected to the corresponding adjusting seat 2.
[0026] In this embodiment, reference Figure 2As shown, the photosensitive sensor 4 is correspondingly arranged with the laser emitter 3. Both the laser emitter 3 and the photosensitive sensor 4 are on the same axis as the center of the mounting base 501. The rack 505 is meshed with the gear ring 504. A cylinder 506 is fixedly installed inside the mounting base 501. The rack 505 is fixedly connected to the output end of the piston rod of the cylinder 506. A cover plate 509 is fixedly installed on the mounting base 501. The cover plate 509 has three sets of sliding grooves 510 corresponding to the clamping rods 508. Each of the three sets of clamping rods 508 has a slider 511 fixedly installed, and the slider 511 is corresponding to the sliding groove 510. The clamping rods 508 are slidably connected to the cover plate 509 through the slider 511 and the sliding groove 510. The door hinge to be tested is placed in the corresponding mounting base 501. The cylinder 506 in the mounting base 501 starts and pushes the rack 505 straight. Linear motion, through the meshing transmission of the gear ring 504 and the rack 505, drives the rotating frame 503 to rotate. The ring teeth 507 on the turntable 502 then drive the three sets of clamping rods 508 to synchronously contract or expand radially along the slide groove 510, thereby accurately clamping the hinge shaft core and ensuring that the laser emitter 3, the photosensitive sensor 4 and the hinge shaft core are on the same axis. The laser emitter 3 is activated to emit a beam of light to the corresponding photosensitive sensor 4. When multiple sets of hinges are completely coaxial, the beam of light can continuously pass through the center of all hinges and be completely received by the photosensitive sensor 4. If there is an axial deviation, the beam path will be blocked or deflected. By analyzing the signal intensity change of the photosensitive sensor 4, the coaxiality deviation value between each hinge can be quantitatively calculated. Through the combination of mechanical clamping and positioning and optical detection, rapid adaptive adjustment under complex working conditions is achieved while ensuring measurement accuracy.
[0027] In this embodiment, reference Figure 3 and Figure 4As shown, a bidirectional screw 604 is rotatably mounted inside the mounting rod 601. A threaded tube 606 is rotatably mounted inside each of the two sets of first telescopic rods 602. A first bevel gear 608 is sleeved on the bidirectional screw 604. A second bevel gear 609 is rotatably mounted inside the mounting rod 601, and the second bevel gear 609 meshes with the first bevel gear 608. Two sets of symmetrically distributed keyways 605 are provided on the bidirectional screw 604. Two sets of symmetrically distributed key blocks 607 are provided inside each of the two sets of threaded tubes 606, with the key blocks 607 corresponding to the keyways 605. The threaded tubes 606 are slidably sleeved with the bidirectional screw 604 through the key blocks 607 and keyways 605. Both ends of the bidirectional screw 604 pass through the two corresponding sets of first telescopic rods 602 and are threadedly connected to the two sets of first telescopic rods 602 respectively. The two sets of threaded tubes 606 pass through the corresponding second telescopic rods 603 and are threadedly connected to the two sets of first telescopic rods 602 respectively. The second telescopic rod 603 is threadedly connected. The motor in the mounting rod 601 drives the second bevel gear 609 to rotate, which in turn drives the bidirectional screw 604 to rotate in conjunction with the first bevel gear 608. Under the limiting action of the mounting rod 601, the bidirectional screw 604 drives the two sets of first telescopic rods 602 to slide synchronously inward or outward. Under the limiting action of the key block 607 and the keyway 605, the two sets of screw tubes 606 that slide with the first telescopic rods 602 also rotate synchronously with the bidirectional screw 604. Under the limiting action of the first telescopic rods 602, the two sets of second telescopic rods 603 slide synchronously inward or outward, driving the two side adjustment seats 2 to adjust the spacing synchronously. This facilitates the detection device to detect the coaxiality between door hinges of different lengths. When the detection device is not in use, the retraction of the two sets of first telescopic rods 602 and second telescopic rods 603 reduces the size of the device, maintaining good portability.
[0028] In this embodiment, the motor in the mounting rod 601 drives the second bevel gear 609 to rotate, which in turn drives the bidirectional screw 604 to rotate in conjunction with the first bevel gear 608. Under the limiting action of the mounting rod 601, the bidirectional screw 604 drives the two sets of first telescopic rods 602 to slide synchronously inward or outward. Under the limiting action of the key block 607 and the keyway 605, the two sets of screw tubes 606 that slide with the first telescopic rods 602 also rotate synchronously with the bidirectional screw 604. Under the limiting action of the first telescopic rods 602, the two sets of second telescopic rods 603 slide synchronously inward or outward, driving the two side adjustment seats 2 to adjust the spacing synchronously. This facilitates the detection device to detect the coaxiality between door hinges of different lengths. When the detection device is not in use, the retraction of the two sets of first telescopic rods 602 and second telescopic rods 603 reduces the size of the device, maintaining good portability. The door hinge to be tested is placed on the corresponding mounting seat 5. In step 01, the cylinder 506 in the mounting base 501 starts and drives the rack 505 to move linearly. Through the meshing transmission between the gear ring 504 and the rack 505, the rotating frame 503 is rotated. The ring tooth 507 on the turntable 502 then drives the three sets of clamping rods 508 to synchronously contract or expand radially along the slide groove 510, thereby accurately clamping the hinge shaft core and ensuring that the laser emitter 3, the photosensitive sensor 4 and the hinge shaft core are on the same axis. The laser emitter 3 is started to emit a beam of light to the corresponding photosensitive sensor 4. When multiple sets of hinges are completely coaxial, the beam of light can continuously pass through the center of all hinges and be completely received by the photosensitive sensor 4. If there is an axial deviation, the beam path will be blocked or deviated. By analyzing the signal intensity change of the photosensitive sensor 4, the coaxiality deviation value between each hinge can be quantitatively calculated. Through the combination of mechanical clamping and positioning and optical detection, rapid adaptive adjustment under complex working conditions is achieved while ensuring measurement accuracy.
[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0030] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A portable door hinge coaxiality detection device, comprising a base (1) and adjustment seats (2) symmetrically distributed on both sides of the base (1), characterized in that: The base (1) and the two sets of adjustment seats (2) are provided with positioning mechanisms (5). A laser emitter (3) is fixedly installed on the right adjustment seat (2), and a photosensitive sensor (4) is fixedly installed on the left adjustment seat (2). The base (1) is provided with an adjustment mechanism (6) for adjusting the distance between the two sets of adjustment seats (2). The positioning mechanism (5) includes a mounting base (501) fixedly installed on a base (1) and two sets of adjusting seats (2). A turntable (502) is provided inside the mounting base (501). The turntable (502) is rotatably connected to the mounting base (501) through a rotating frame (503). A toothed ring (504) is sleeved on the rotating frame (503). A rack (505) is slidably installed inside the mounting base (501). A ring tooth (507) is fixedly installed on the turntable (502). Three sets of ring-shaped clamping rods are provided inside the mounting base (501). (508) All three sets of clamping rods (508) are connected to the turntable (502) by the ring teeth (507). The adjustment mechanism (6) includes a mounting rod (601) fixedly installed on the base (1). Two sets of symmetrically distributed first telescopic rods (602) are slidably installed in the mounting rod (601), and a second telescopic rod (603) is slidably installed in both sets of first telescopic rods (602). The end of the second telescopic rod (603) away from the mounting rod (601) is fixedly connected to the corresponding adjustment seat (2).
2. The portable door hinge coaxiality detection device according to claim 1, characterized in that: The photosensitive sensor (4) is set in correspondence with the laser emitter (3), and both the laser emitter (3) and the photosensitive sensor (4) are on the same axis as the center of the spray assembly mounting base (501).
3. The portable door hinge coaxiality detection device according to claim 1, characterized in that: The rack (505) is meshed with the toothed ring (504), and a cylinder (506) is fixedly installed in the mounting base (501). The rack (505) is fixedly connected to the output end of the piston rod of the cylinder (506).
4. The portable door hinge coaxiality detection device according to claim 1, characterized in that: A cover plate (509) is fixedly installed on the mounting base (501). Three sets of sliding grooves (510) are provided on the cover plate (509) corresponding to the clamping rods (508). A slider (511) is fixedly installed on each of the three sets of clamping rods (508), and the slider (511) is corresponding to the sliding groove (510). The clamping rods (508) are slidably connected to the cover plate (509) through the slider (511) and the sliding groove (510).
5. The portable door hinge coaxiality detection device according to claim 1, characterized in that: A bidirectional screw (604) is rotatably installed inside the mounting rod (601), and a screw tube (606) is rotatably installed inside each of the two sets of first telescopic rods (602). A first bevel gear (608) is sleeved on the bidirectional screw (604), and a second bevel gear (609) is rotatably installed inside the mounting rod (601), and the second bevel gear (609) meshes with the first bevel gear (608).
6. The portable door hinge coaxiality detection device according to claim 5, characterized in that: The bidirectional screw (604) has two sets of symmetrically distributed keyways (605), and each of the two sets of solenoids (606) has two sets of symmetrically distributed key blocks (607), with the key blocks (607) and keyways (605) corresponding to each other. The solenoids (606) are slidably connected to the bidirectional screw (604) through the key blocks (607) and keyways (605).
7. A portable door hinge coaxiality detection device according to claim 5, characterized in that: The two ends of the bidirectional screw (604) pass through two corresponding sets of first telescopic rods (602) and are threaded to the two sets of first telescopic rods (602) respectively. The two sets of screw tubes (606) pass through the corresponding second telescopic rods (603) and are threaded to the second telescopic rods (603) respectively.