A building curtain wall flatness detection device

Abstract

This invention discloses a device for detecting the flatness of building curtain walls, relating to the technical field of flatness detection. The device comprises a ball-jointed leveling platform, a servo-rotating conductive slide, a variable-distance dual laser, and an LED projection system with a replaceable perforated plate. The device establishes a planar reference through projection of a light spot array and uses laser triangulation to quickly determine the distance from each light spot to the laser line. Servo rotation and electric cylinder pitch enable full-width scanning in both horizontal and vertical directions, reducing measurement errors.

Description

Technical Field

[0001] The present invention relates to the technical field of flatness detection, in particular to a device for detecting the flatness of a building curtain wall. Background Art

[0002] Currently, curtain wall flatness testing primarily relies on laser measuring instruments such as handheld laser levels, using a total station combined with a graduated ruler or steel tape measure. When the curtain wall area is large or the surface is tilted, sparse reference points can easily lead to missed inspections. Repeated positioning amplifies manual reading errors, making measurement results discrete and difficult to trace. Existing equipment generally lacks replaceable optical templates and spot density adjustment mechanisms, making it impossible to project a large-scale, highly uniform reference network at the same location. Furthermore, outdoor construction sites experience significant vibration and temperature differences, and traditional devices lack damping locks and heat dissipation designs. Laser pointing drift and LED overheating and light loss are common problems, leaving overall efficiency and reliability to be improved. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a building curtain wall flatness detection device, comprising a Japanese-shaped frame, a conductive sliding rod bracket is rotatably mounted on the Japanese-shaped frame, a conductive sliding rod and an adjusting toothed disc are rotatably mounted on the conductive sliding rod bracket, wherein the adjusting toothed disc is fixedly sleeved on the conductive sliding rod; two conductive sliding blocks are slidably engaged with the conductive sliding rod, and both conductive sliding blocks are equipped with a swingable laser, wherein the conductive sliding blocks are spline-slidably engaged with the conductive sliding rod; a projection bracket is fixedly mounted on the Japanese-shaped frame, an adjustment frame is fixedly mounted on the projection bracket, the center point of the adjustment frame is intersected with the extension line of the rotation axis of the conductive sliding rod bracket, a projection cavity is rotatably mounted on the inner side of the adjustment frame, an LED light-emitting unit is fixedly mounted on the inner wall of the projection cavity, a light-transmitting cover is fixedly mounted on the side of the projection cavity away from the LED light-emitting unit in a manner that is easy to disassemble, and a light-shielding hole plate is provided between the light-transmitting cover and the LED light-emitting unit; the light-shielding hole plate is slidably inserted into the light-shielding hole plate sliding embedded frame, and the light-shielding hole plate sliding embedded frame is fixed on the projection cavity.

[0004] Preferably, a servo motor is fixedly mounted on the conductive slide rod bracket, an adjusting gear is fixedly mounted on the output shaft of the servo motor, and the adjusting gear is engaged with the adjusting gear disc for transmission to adjust the rotation angle of the conductive slide rod on the conductive slide rod bracket.

[0005] Preferably, a limit rocker arm is also rotatably installed on the Japanese-shaped frame, and the limit rocker arm is fixedly matched with the conductive sliding rod bracket. A first magnet and a second magnet are also fixedly installed on the Japanese-shaped frame, and the first magnet and the second magnet are vertically arranged at ninety degrees. The first magnet and the second magnet are used to limit the swing angle range of the limit rocker arm, so that the swing range of the limit rocker arm is controlled within ninety degrees, wherein the limit rocker arm is in contact with the first magnet and the second magnet and is magnetically matched.

[0006] Preferably, an angular displacement sensor is fixedly mounted on the conductive sliding block, a resistance friction disk is fixedly mounted on the rotating shaft of the angular displacement sensor, a laser is fixedly mounted on the resistance friction disk, a rubber pad bracket is also fixedly mounted on the conductive sliding block, a rubber pad is fixedly mounted on the rubber pad bracket, the rubber pad is in contact and frictionally engaged with the resistance friction disk, and is used to provide rotational resistance to the resistance friction disk; a locking screw is also threadedly mounted on the conductive sliding block, and the conductive sliding block is fixed to the conductive sliding rod by the locking screw.

[0007] Preferably, a plurality of circular through holes are provided in a rectangular array on the light shielding hole plate, a collimating lens is provided between the light shielding hole plate and the LED light emitting unit, the collimating lens is fixed on the inner wall of the projection cavity, and the collimating lens is coaxial with the rotation axis of the conductive sliding rod bracket.

[0008] Preferably, a convex lens is provided inside the light-transmitting cover, the convex lens is coaxially arranged with the collimating lens, the convex lens is fixedly mounted on a convex lens holder, the convex lens holder is slidably mounted on a guide slide bar, and the guide slide bar is fixedly mounted on the projection cavity.

[0009] Preferably, an adjusting screw rod parallel to the axis of the guide slide rod is rotatably mounted on the projection cavity, and the adjusting screw rod is threadedly matched with the convex lens bracket to drive the convex lens to slide on the guide slide rod.

[0010] Preferably, a dial wheel is fixedly mounted on one end of the adjusting screw rod, and a heat sink is fixedly attached to a surface of the LED light emitting unit located outside the projection cavity, and the heat sink is fixedly matched with the projection cavity.

[0011] Preferably, an electric cylinder is movably mounted on the adjustment frame, a swing arm is fixedly mounted at the rotational position of the projection chamber and the adjustment frame, and the swing arm is movably connected to the end of the telescopic rod of the electric cylinder for adjusting the swing angle of the projection chamber on the adjustment frame.

[0012] Preferably, the Japanese-shaped frame is fixedly mounted on the adjustment platform, and the adjustment platform is movably mounted at the center position of the circle on the upper surface of the base through a ball head using a ball pair connection method. Three circular equidistant array adjustment support screws are threadedly inserted into the edge position of the adjustment platform, and the bottom end of the adjustment support screw is in contact with the upper surface of the base.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention diffuses the high-brightness LED light beam into a regular light spot array covering the entire curtain wall within a distance of several meters through a three-section optical link of a collimating lens, a light-shielding hole plate, and a convex lens; the user only needs to replace the hole plate or fine-tune the screw rod to change the light spot density and color, and can adapt to different curtain wall sizes and color contrast requirements without moving the entire machine, significantly improving the benchmark uniformity and ease of operation for large-area detection; (2) The servo motor of the present invention drives the gear-toothed disc mechanism to accurately rotate the conductive slide rod, and the limit rocker arm cooperates with the double magnet to ensure that the stop angle is safe and reliable; one-time installation can continuously complete two sets of horizontal and vertical measurement sequences, eliminating the steps of repeated disassembly and re-leveling of traditional instruments; (3) The dual laser of the present invention is installed on a slidable and lockable guide The electric sliding block, the spacing is read instantly by sliding rheostat or scale; the angular displacement sensor synchronously records the swing angle, which is convenient for directly calculating the overall flatness of the curtain wall; (4) The electric cylinder-swing arm mechanism of the present invention can make the projection cavity freely adjustable in the pitch plane, ensuring that the projection spot is always facing the vertical or inclined curtain wall; the large-area heat sink on the back of the light-emitting unit directly fits the cavity wall, ensuring that the light flux and spot shape can be maintained for a long time of high brightness operation, and can operate reliably under high temperature in summer or low temperature in winter; (5) The adjustment platform of the ball joint connection of the present invention is combined with a three-point support screw, which can quickly complete precise leveling under the guidance of an ordinary spirit level; the rubber pad-resistance friction disk structure provides controllable damping for the laser, absorbs micro-vibration on the construction site and prevents pointing drift, broadening the scope of application of the device in the field and high-altitude curtain wall construction sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the Japanese-style frame structure of the present invention;

[0016] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0017] Figure 4 This is a structural diagram of the conductive sliding rod bracket of the present invention;

[0018] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B in the middle;

[0019] Figure 6 This is a structural diagram of the heat sink of the present invention;

[0020] Figure 7 Schematic diagram of the internal structure of the projection cavity of the present invention.

[0021] In the figure: 101-base; 102-ball head; 103-adjusting support screw; 104-adjusting platform; 105-Japanese frame; 106-projection bracket; 107-adjusting frame; 108-conductive slide rod bracket; 109-limiting rocker; 110-first magnet; 111-second magnet; 112-conductive slide rod; 113-servo motor; 114-adjusting gear; 115-adjusting gear plate; 116-conductive sliding block; 117-angular displacement sensor; 118-excitation Optical device; 119-resistance friction disk; 120-rubber pad; 121-rubber pad bracket; 122-locking screw; 123-electric cylinder; 124-swing arm; 125-projection chamber; 126-light-transmitting cover; 127-heat sink; 128-LED light-emitting unit; 129-dial; 130-adjusting screw; 131-light-shielding hole plate; 132-light-shielding hole plate sliding embedded frame; 133-convex lens bracket; 134-convex lens; 135-guide slide rod; 136-collimating lens. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-Figure 7 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0023] The present invention provides a device for detecting the flatness of a building curtain wall, comprising a Japanese-shaped frame 105, a conductive sliding rod bracket 108 being rotatably mounted on the Japanese-shaped frame 105, a conductive sliding rod 112 and an adjusting toothed disc 115 being rotatably mounted on the conductive sliding rod bracket 108, wherein the adjusting toothed disc 115 is fixedly sleeved on the conductive sliding rod 112; two conductive sliding blocks 116 are slidably engaged on the conductive sliding rod 112, and both conductive sliding blocks 116 are equipped with a laser 118 that can swing, wherein the conductive sliding blocks 116 and the conductive sliding rod 112 are spline-slidably engaged; a projection bracket 106 is fixedly mounted on the Japanese-shaped frame 105, and the projection bracket 106 is fixedly mounted on the projection bracket 106. An adjustment frame 107 is fixedly mounted, its center intersecting the extended axis of rotation of the conductive slide support 108. A projection chamber 125 is rotatably mounted within the adjustment frame 107, with an LED light-emitting unit 128 fixedly mounted on its inner wall. A light-transmitting cover 126 is fixedly mounted on the side of the projection chamber 125 away from the LED light-emitting unit 128 in a removable manner. A light-shielding plate 131 is disposed between the light-transmitting cover 126 and the LED light-emitting unit 128. The light-shielding plate 131 slides onto a light-shielding plate sliding insert 132, which is fixed to the projection chamber 125. A servo motor 113 is fixedly mounted on the conductive slide support 108. An adjustment gear 114 is fixedly mounted on the output shaft of the servo motor 113. The adjustment gear 114 meshes with an adjustment toothed disc 115 to adjust the rotation angle of the conductive slide 112 within the conductive slide support 108. A limit rocker arm 109 is also rotatably mounted on the Japanese-shaped frame 105, and the limit rocker arm 109 is fixedly matched with the conductive slide rod bracket 108. A first magnet 110 and a second magnet 111 are also fixedly mounted on the Japanese-shaped frame 105, and the first magnet 110 and the second magnet 111 are vertically arranged at ninety degrees. The first magnet 110 and the second magnet 111 are used to limit the swing angle range of the limit rocker arm 109, so that the swing range of the limit rocker arm 109 is controlled within ninety degrees, wherein the limit rocker arm 109 is in contact with the first magnet 110 and the second magnet 111 and magnetically cooperates. An angular displacement sensor 117 is fixedly mounted on the conductive sliding block 116, a resistance friction disc 119 is fixedly mounted on the rotating shaft of the angular displacement sensor 117, a laser 118 is fixedly mounted on the resistance friction disc 119, a rubber pad bracket 121 is also fixedly mounted on the conductive sliding block 116, a rubber pad 120 is fixedly mounted on the rubber pad bracket 121, the rubber pad 120 is in contact and frictionally engaged with the resistance friction disc 119, and is used to provide rotational resistance to the resistance friction disc 119; a locking screw 122 is also threadedly mounted on the conductive sliding block 116, and the conductive sliding block 116 is fixed to the conductive sliding rod 112 by the locking screw 122.

[0024] A plurality of circular through-holes are formed in a rectangular array on the light shielding plate 131. A collimating lens 136 is disposed between the light shielding plate 131 and the LED light-emitting unit 128. Collimating lens 136 is fixed to the inner wall of the projection chamber 125 and is coaxial with the rotation axis of the conductive slide support 108. A convex lens 134 is disposed inside the light-transmitting cover 126. Convex lens 134 is coaxial with collimating lens 136 and fixedly mounted on a convex lens support 133. Convex lens support 133 is slidably mounted on a guide slide 135, which is fixedly mounted on the projection chamber 125. An adjustment screw 130 is rotatably mounted on the projection chamber 125, parallel to the axis of the guide slide 135. The adjustment screw 130 engages with the convex lens support 133 in a threaded manner, driving the convex lens 134 to slide on the guide slide 135. A dial 129 is fixedly mounted on one end of the adjustment screw 130. A heat sink 127 is fixedly attached to the surface of the LED light-emitting unit 128 located outside the projection cavity 125, and the heat sink 127 is fixedly engaged with the projection cavity 125. An electric cylinder 123 is movably mounted on the adjustment frame 107. A swing arm 124 is fixedly mounted at the rotational position between the projection cavity 125 and the adjustment frame 107. The swing arm 124 is movably connected to the end of the telescopic rod of the electric cylinder 123 to adjust the swing angle of the projection cavity 125 on the adjustment frame 107. The Japanese-shaped frame 105 is fixedly mounted on the adjustment platform 104. The adjustment platform 104 is movably mounted at the center of the upper surface of the base 101 via a ball joint 102 using a ball-joint connection. Three circular, equidistantly spaced adjustment support screws 103 are threaded into the edge of the adjustment platform 104, and the bottom ends of the adjustment support screws 103 are in contact with the upper surface of the base 101.

[0025] The working principle of the building curtain wall flatness detection device disclosed in the present invention is as follows: the device is placed on the front of the curtain wall to be inspected, and the adjustment platform 104 is adjusted to a horizontal position by using a spirit level. Specifically, the angle between the adjustment platform 104 and the base 101 is adjusted by rotating three adjustment support screws 103, and the adjustment is performed using the spirit level as a reference benchmark. When in use, the LED light-emitting unit 128 is started, and the light emitted by the LED light-emitting unit 128 is collimated by the collimating lens 136 and then irradiated onto the light-shielding hole plate 131, and then the light is blocked by the light-shielding hole plate 131. Part of the light passes through the circular through-hole of the light-shielding hole plate 131 and then irradiates the convex lens 134. After passing through the convex lens 134, the light emitted from the light-shielding hole plate 131 is diffused by the convex lens 134 (if there is no convex lens 134, the light will project a number of light spots of the same shape as the circular through-hole array on the light-shielding hole plate 131 on the curtain wall). The convex lens 134 can disperse the light spots so that they are evenly spread over the entire curtain wall surface (the device is placed in a suitable position according to the size of the curtain wall. The farther the distance, the more dispersed the light spots, and the larger the curtain wall area it is suitable for). By replacing different light-shielding hole plates 131 (with different numbers of circular through holes or array shapes on the light-shielding hole plates 131), the desired light spot array can be projected on the curtain wall. By replacing the light-transmitting cover 126, which has different colors, the color of the light spot projected on the curtain wall can be changed. The side of the light-transmitting cover 126 facing the convex lens 134 can be optionally equipped with a concave lens shape to cooperate with the convex lens 134. By rotating the dial 129, the dial 129 drives the adjustment screw 130 to rotate, and the adjustment screw 130 drives the convex lens bracket 133 to slide on the guide slide bar 135, thereby driving the distance between the convex lens 134 on the convex lens bracket 133 and the concave lens of the light-transmitting cover 126, thereby adjusting the density of the light passing through the convex lens 134 and the concave lens on the light-transmitting cover 126 to spread to the light spot array on the curtain wall (there is no need to move the entire device for adjustment).

[0026] The measurement process requires activating two lasers 118 and determining the distance between them. Specifically, this distance can be determined by measuring the distance between two conductive sliders 116. The distance between the two conductive sliders 116 can be determined by connecting the two conductive sliders 116, the conductive slider 112, and another conductive slider 116 in series to a DC power supply. By detecting the current in the circuit, the distance between the two conductive sliders 116 can be determined (the conductive sliders 116, the conductive slider 112, and the conductive slider 116 form a sliding rheostat). Alternatively, manual measurement can be performed, or scale markings can be set on the conductive slider 112. After determining the distance between the two conductive sliders 116, the locking screw 122 must be manually rotated to secure the conductive slider 116 to the conductive slider 112. First, the conductive slider 112 is swung to a horizontal position, i.e., the limit swing arm 109 is in magnetic contact with the second magnet 111. Then, the two lasers 118 are rotated so that the light emitted by the two lasers 118 hits the light spot projected on the curtain wall (one of the light spot arrays). In other words, three light spots overlap (the light spots projected by the two lasers 118 on the curtain wall and one of the light spots in the circular through-hole of the light-shielding plate 131). The swing angle of the lasers 118 on the conductive slider 112 can be detected by the angular displacement sensor 117. The conductive slider 112 and the light emitted by the two lasers 118 form a triangle. The three interior angles of the triangle and the length of the conductive slider 112 (the spacing between the lasers 118) are known. Therefore, the altitude of the triangle can be calculated—the distance between the light spot on the curtain wall and the conductive slider 112 (actually, the line connecting the two lasers 118). All light spots at the same horizontal height on the curtain wall are measured sequentially. The servo motor 113 is then controlled. The output shaft of the servo motor 113 drives the adjustment gear 114, which in turn drives the adjustment toothed disc 115. The adjustment toothed disc 115 rotates the conductive slider 112, which in turn rotates and oscillates the laser 118, causing the laser light 118 to illuminate the next row of light spots on the curtain wall. The measurement then continues for the next row of light spots (the measured dimensions vary for each row of light spots due to their different heights). Therefore, the flatness of the curtain wall at each horizontal position is measured. The conductive slider 112 is then rotated, causing it to transition from horizontal to vertical, causing the limit swing arm 109 to magnetically engage the first magnet 110. The above steps are then repeated, measuring the light spots on a vertical row of the curtain wall until the measured data intersect, revealing the overall flatness of the curtain wall. The projection angle of the light spot on the curtain wall can be changed by controlling the telescopic rod of the electric cylinder 123. The electric cylinder 123 drives the projection cavity 125 to swing on the adjustment frame 107 through the swing arm 124, thereby changing the projection angle, for example, in the use scenario of a tilted curtain wall.

Claims

1. A building curtain wall flatness detection device, characterized in that: The invention comprises a Japanese-shaped frame (105), a conductive sliding rod bracket (108) being rotatably mounted on the Japanese-shaped frame (105), a conductive sliding rod (112) and an adjusting toothed disc (115) being rotatably mounted on the conductive sliding rod bracket (108), wherein the adjusting toothed disc (115) is fixedly sleeved on the conductive sliding rod (112); Two conductive sliding blocks (116) are slidably engaged on the conductive sliding rod (112), and both conductive sliding blocks (116) are equipped with a laser (118) capable of swinging, wherein the conductive sliding blocks (116) and the conductive sliding rod (112) are spline-slidably engaged; A projection bracket (106) is fixedly mounted on the Japanese-character frame (105), an adjustment frame (107) is fixedly mounted on the projection bracket (106), a center point of the adjustment frame (107) and an extension line of the rotation axis of the conductive slide rod bracket (108) are intersected, a projection cavity (125) is rotatably mounted on the inner side of the adjustment frame (107), an LED light-emitting unit (128) is fixedly mounted on the inner wall of the projection cavity (125), a light-transmitting cover (126) is fixedly mounted on a side of the projection cavity (125) away from the LED light-emitting unit (128) in a manner that is easy to disassemble, and a light-shielding hole plate (131) is provided between the light-transmitting cover (126) and the LED light-emitting unit (128); the light-shielding hole plate (131) is slidably inserted into the light-shielding hole plate sliding embedded frame (132), and the light-shielding hole plate sliding embedded frame (132) is fixed on the projection cavity (125); A plurality of circular through holes are provided in a rectangular array on the light shielding hole plate (131); a collimating lens (136) is provided between the light shielding hole plate (131) and the LED light emitting unit (128); the collimating lens (136) is fixed on the inner wall of the projection cavity (125), and the collimating lens (136) is coaxial with the rotation axis of the conductive slide rod bracket (108); a convex lens (134) is provided on the inner side of the light-transmitting cover (126); the convex lens (134) and the collimating lens (136) are coaxially arranged; the convex lens (134) is fixedly mounted on the convex lens bracket (133); the convex lens bracket (133) is slidably mounted on the guide slide rod (135); and the guide slide rod (135) is fixedly mounted on the projection cavity (125).

2. A building curtain wall flatness detection device according to claim 1, characterized in that: A servo motor (113) is fixedly mounted on the conductive slide rod bracket (108), and an adjusting gear (114) is fixedly mounted on the output shaft of the servo motor (113). The adjusting gear (114) is meshed with the adjusting toothed disc (115) for transmission, and is used to adjust the rotation angle of the conductive slide rod (112) on the conductive slide rod bracket (108).

3. The building curtain wall flatness detection device according to claim 2, characterized in that: A limit swing rod (109) is also rotatably mounted on the Japanese-shaped frame (105), and the limit swing rod (109) is fixedly matched with the conductive slide rod bracket (108). A first magnet (110) and a second magnet (111) are also fixedly mounted on the Japanese-shaped frame (105), and the first magnet (110) and the second magnet (111) are vertically arranged at ninety degrees. The first magnet (110) and the second magnet (111) are used to limit the swing angle range of the limit swing rod (109), so that the swing range of the limit swing rod (109) is controlled within ninety degrees, wherein the limit swing rod (109) is in contact with the first magnet (110) and the second magnet (111) to form a magnetic match.

4. The building curtain wall flatness detection device according to claim 3, characterized in that: An angular displacement sensor (117) is fixedly mounted on the conductive sliding block (116), a resistance friction disc (119) is fixedly mounted on the rotating shaft of the angular displacement sensor (117), a laser (118) is fixedly mounted on the resistance friction disc (119), a rubber pad bracket (121) is also fixedly mounted on the conductive sliding block (116), a rubber pad (120) is fixedly mounted on the rubber pad bracket (121), the rubber pad (120) is in contact with and frictionally engaged with the resistance friction disc (119), and is used to provide rotational resistance to the resistance friction disc (119); a locking screw (122) is also threadedly mounted on the conductive sliding block (116), and the conductive sliding block (116) is fixed to the conductive sliding rod (112) via the locking screw (122).

5. The building curtain wall flatness detection device according to claim 4, characterized in that: An adjusting screw (130) is rotatably mounted on the projection cavity (125) and is arranged parallel to the axis of the guide slide (135). The adjusting screw (130) is threadedly coupled with the convex lens bracket (133) to drive the convex lens (134) to slide on the guide slide (135).

6. The building curtain wall flatness detection device according to claim 5, characterized in that: A dial wheel (129) is fixedly mounted on one end of the adjusting screw rod (130), and a heat sink (127) is fixedly attached to one side of the LED light emitting unit (128) located outside the projection cavity (125), and the heat sink (127) is fixedly matched with the projection cavity (125).

7. The building curtain wall flatness detection device according to claim 6, characterized in that: An electric cylinder (123) is movably mounted on the adjustment frame (107), a swing arm (124) is fixedly mounted at the rotational position of the projection chamber (125) and the adjustment frame (107), and the swing arm (124) is movably connected to the end of the telescopic rod of the electric cylinder (123) for adjusting the swing angle of the projection chamber (125) on the adjustment frame (107).

8. The building curtain wall flatness detection device according to claim 7, characterized in that: The Japanese-shaped frame (105) is fixedly mounted on the adjustment platform (104). The adjustment platform (104) is movably mounted at the center position of the upper surface of the base (101) by using a ball joint connection method through a ball head (102). Three circular equidistant array adjustment support screws (103) are threadedly inserted into the edge position of the adjustment platform (104). The bottom end of the adjustment support screw (103) contacts and cooperates with the upper surface of the base (101).

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