Elevator installation gap measuring device

Abstract

The invention relates to the technical field of elevator spacing measurement, and discloses an elevator installation gap measuring device which comprises an installation unit, a detection unit and a displacement unit which are installed on the top of an elevator car. The driving motor can drive the arch-shaped support connected with the laser range finders and the connecting plate to rotate, finally the laser range finders can move to the four faces of the elevator car correspondingly, and therefore measurement operation is completed, the laser range finders only need to be installed on one face of the elevator car through the mode, the installation efficiency is improved conveniently, and the installation cost is reduced. When the connecting plate rotates on the adjacent surface of the elevator car, the positioning sliding block is driven to integrally slide outwards through the guidance of the outer convex groove and the reversing groove, the push rod drives the arched bracket to turn over, and the laser range finder on the arched bracket is changed into a vertical state, so that the distance from the top of the car to the top of the hoistway is measured; the number of used laser range finders is reduced, the measurement cost is saved, and the situation of signal interference is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator spacing measurement, and in particular relates to an elevator installation gap measuring device. Background Art

[0002] In today's context of continuous urbanization, high-rise buildings are springing up like mushrooms after rain. As a key equipment for vertical transportation, the installation quality of elevators is directly related to the life safety and daily experience of users. During the installation of elevators, accurately controlling the distance from the shaft wall to the elevator car and the distance from the top of the car to the top of the shaft is the core link to ensure the stable operation of the elevator, reduce operating noise, and prevent car collisions.

[0003] Nowadays, when measuring the distance between the shaft wall and the car, it is necessary to set up laser ranging sensors in the four directions of the car respectively. However, in the narrow space of the shaft, sensors need to be installed on the four sides of the elevator car. The overall operation is difficult and the installation efficiency is low. For the measurement of the distance from the top of the car to the top of the shaft, additional sensors are often required. Therefore, the layout planning of many sensors is extremely complicated, which not only consumes a lot of manpower and time during the installation and debugging stage, but also easily causes signal interference due to messy wiring.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the problem that when measuring the distance between the shaft wall and the car, laser ranging sensors need to be set up in four directions of the car respectively. However, in the narrow space of the shaft, sensors need to be installed on the four sides of the elevator car, which makes the overall operation difficult and the installation efficiency low. In addition, for the measurement of the distance from the top of the car to the top of the shaft, additional sensors are often required. Therefore, the layout planning of many sensors is extremely complicated, which not only consumes a lot of manpower and time in the installation and debugging stage, but also easily causes signal interference due to messy wiring. The basic concept of the technical solution adopted by the present invention is:

[0006] An elevator installation gap measuring device comprises an installation unit installed on the top of an elevator car, a measuring unit and a displacement unit.

[0007] The installation unit comprises a cover body, which is installed at the center of the top of the elevator car, and an installation cavity is opened inside the cover body;

[0008] The measuring unit comprises a turntable, which is rotatably mounted at the center of the mounting cavity, a driving motor is mounted at the rotation center of the turntable, a pair of connecting plates are mounted on the side walls of the turntable, positioning sliders are slidably mounted on the pair of connecting plates, a positioning plate is mounted inside the mounting cavity, four protrusions are provided on the positioning plate, the four protrusions correspond to the four side walls of the elevator car, external convex grooves are provided on the four protrusions, a reversing groove is connected between adjacent external convex grooves, and the reversing groove is provided on the positioning plate, the positioning slider is slidably connected to the corresponding external convex groove, an arch bracket is rotatably mounted on the connecting plate, a synchronous plate is rotatably mounted on the side wall of the arch bracket, a plurality of pairs of laser rangefinders are mounted on the synchronous plate, a laser rangefinder sensor is mounted on each of the laser rangefinders, a rocker arm is mounted on the rotation center of the arch bracket, and the rocker arm is slidably connected to a push rod mounted on the surface of the positioning slider;

[0009] The shift unit includes a driving gear and a guide rack. A gear shaft is installed at the rotation center of the driving gear. The gear shaft is connected to the rotation center of the synchronous plate. The guide rack is installed at the bottom of the mounting cavity, and the guide rack corresponds to the reversing groove. The guide rack is adapted to the driving gear, and the center angle of the guide rack is smaller than the center angle corresponding to the reversing groove.

[0010] As a preferred embodiment of the present invention, a pair of vertical plates are installed at the bottom of the cover body, and a mounting plate is welded at the bottom of the pair of vertical plates. Reinforcing ribs are installed at the connection between the mounting plate and the vertical plate. The reinforcing ribs are triangular. Mounting holes are opened at the four corners of the mounting plate, and locking bolts are installed inside the mounting holes. The locking bolts are used to connect the mounting plate and the elevator car.

[0011] As a preferred embodiment of the present invention, a cover body is installed on the cover body, a handle is installed on the cover body, and an anti-slip groove is provided on the surface of the handle, a slide rail is installed on the bottom of the cover body, and the slide rail is slidably arranged in an inner groove provided on the side wall of the cover body, a notch is provided on the surface of the cover body, the arch bracket movably passes through the notch, and the cover body and the turntable are connected to each other.

[0012] As a preferred embodiment of the present invention, the driving motor housing is fixedly installed at the bottom of the cover body, the driving motor output end is installed with a synchronization shaft, the synchronization shaft movably passes through the cover body, the end of the synchronization shaft is interconnected with the turntable, the synchronization shaft movably passes through a fixed block installed at the end of the guide rack, and the fixed block is located at the center of the cover body.

[0013] As a preferred embodiment of the present invention, a positioning groove is provided on the connecting plate, and the positioning groove is slidably connected to the positioning slider. A limiting rod is installed on the positioning groove, and the limiting rod is laterally distributed. The limiting rod is slidably connected to the positioning slider, and a limiting spring is sleeved on the side wall of the limiting rod. One end of the limiting spring is clamped on the side wall of the positioning groove, and the other end is clamped on the side wall of the positioning slider.

[0014] As a preferred embodiment of the present invention, a protrusion is fixedly installed at the bottom of the positioning slider, the surface of the protrusion is chamfered, the protrusion is slidably connected to the external convex groove, the external convex groove is arched, the reversing groove is an arc groove, and several pairs of the external convex grooves and reversing grooves alternately form an annular groove.

[0015] As a preferred embodiment of the present invention, a connecting shaft is rotatably installed inside the arch bracket, one end of the connecting shaft is interconnected with the rotation center of the synchronization plate, the other end of the connecting shaft is interconnected with the gear shaft, the synchronization plate is in a horizontal state, and the spacing between several pairs of laser rangefinders is the same.

[0016] As a preferred embodiment of the present invention, a pair of positioning seats are installed on the surface of the connecting plate, the pair of positioning seats are located on both sides of the positioning slider, a positioning shaft is rotatably installed between the pair of positioning seats, both ends of the positioning shaft are respectively connected to the arch brackets, and the positioning shaft is connected to the rocker arm.

[0017] As a preferred embodiment of the present invention, the rocker arm is in an inclined state, a strip groove is provided on the rocker arm, a sliding rod is slidably arranged on the strip groove, push rods are connected to both ends of the sliding rod, and the push rods are in an inclined state.

[0018] As a preferred embodiment of the present invention, a coil spring is provided at the connection between the gear shaft and the arch support, a through hole is opened on the surface of the connecting plate, and the position of the through hole corresponds to the position of the driving gear.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is provided with a measuring unit, wherein the driving motor in the measuring unit can drive the arch bracket and the connecting plate connected with the laser rangefinder to rotate, and finally the laser rangefinder can be moved to the four surfaces of the elevator car respectively, so as to complete the measurement operation. In this way, the laser rangefinder only needs to be installed on one surface of the elevator car, which is more convenient to operate and is convenient to improve the installation efficiency. When the connecting plate rotates on the adjacent surface of the elevator car, the positioning slider is driven to slide outward as a whole through the guidance of the outer convex groove and the reversing groove, and the push rod is pushed to move, and the push rod drives the arch bracket to flip. At this time, the laser rangefinder on the arch bracket becomes a vertical state, so as to measure the distance from the top of the car to the top of the shaft. In this way, the number of laser rangefinders used can be reduced, the measurement cost can be saved, and the occurrence of signal interference can be reduced. When the laser rangefinder becomes a vertical state, the driving gear at the bottom of the laser rangefinder can drive the guide rack to roll, and finally drive the synchronous plate and the laser rangefinder to rotate, so as to increase the measurement range and further improve the measurement accuracy.

[0021] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached picture:

[0023] Figure 1 A schematic diagram of the installation structure of an elevator installation gap measuring device;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of an elevator installation gap measuring device;

[0025] Figure 3 A gap measuring device for an elevator Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 A cross-sectional view of a cover body of an elevator installation gap measuring device;

[0027] Figure 5 This is a schematic diagram of the structure of an elevator installation gap measuring device after the cover body is removed;

[0028] Figure 6 A gap measuring device for an elevator Figure 5 Enlarged view of point B in the middle;

[0029] Figure 7 A schematic diagram of the internal structure of an installation cavity of an elevator installation gap measuring device;

[0030] Figure 8 A three-dimensional diagram of the arched support of an elevator installation gap measuring device.

[0031] In the figure:

[0032] 100, mounting unit; 101, cover body; 1011, mounting cavity; 1012, vertical plate; 1013, reinforcing rib; 1014, mounting plate; 1015, mounting hole; 102, cover body; 1021, handle; 1022, slide rail; 1023, inner groove; 1024, notch;

[0033] 200, measuring unit; 201, connecting plate; 2011, turntable; 2012, synchronous shaft; 2013, driving motor; 202, positioning slide; 2021, positioning slider; 2022, limiting rod; 2023, limiting spring; 2024, convex block; 203, positioning plate; 2031, protrusion; 2032, reversing groove; 2033, outer convex groove; 204, arch bracket; 2041, positioning seat; 2042, positioning shaft; 2043, rocker arm; 2044, strip groove; 2045, slide rod; 2046, push rod; 205, synchronous plate; 2051, laser rangefinder; 2052, laser rangefinder sensor; 2053, connecting shaft;

[0034] 300, shift unit; 301, driving gear; 3011, gear shaft; 3012, coil spring; 3013, through hole; 302, guide rack; 3021, fixing block;

[0035] 400. Elevator car. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0037] Embodiment 1:

[0038] like Figures 1 to 8 As shown, an elevator installation gap measuring device includes an installation unit 100 installed on the top of an elevator car 400, a measuring unit 200 and a displacement unit 300.

[0039] The installation unit 100 includes a cover 101, which is installed at the top center of the elevator car 400, and an installation cavity 1011 is opened inside the cover 101;

[0040] The measuring unit 200 includes a turntable 2011, which is rotatably mounted at the center of the installation cavity 1011. A driving motor 2013 is mounted at the rotation center of the turntable 2011. A pair of connecting plates 201 are mounted on the side walls of the turntable 2011. A positioning slider 2021 is slidably mounted on the pair of connecting plates 201. A positioning plate 203 is mounted inside the installation cavity 1011. Four protrusions 2031 are formed on the positioning plate 203. The four protrusions 2031 correspond to the four side walls of the elevator car 400. The four protrusions 2031 are each provided with an outer convex groove 2031. 033, a reversing groove 2032 is connected between adjacent outer convex grooves 2033, and the reversing groove 2032 is provided on the positioning plate 203, the positioning slider 2021 is slidably connected with the corresponding outer convex groove 2033, an arch bracket 204 is rotatably mounted on the connecting plate 201, a synchronous plate 205 is rotatably mounted on the side wall of the arch bracket 204, a plurality of pairs of laser rangefinders 2051 are mounted on the synchronous plate 205, each laser rangefinder 2051 is mounted with a laser distance sensor 2052, a rocker arm 2043 is mounted at the rotation center of the arch bracket 204, and the rocker arm The push rod 2046 installed on the surface of the positioning slider 2021 is slidably connected with the push rod 2043; the driving motor 2013 in the measuring unit 200 can drive the arch bracket 204 and the connecting plate 201 connected with the laser rangefinder 2051 to rotate, and finally the laser rangefinder 2051 can be moved to the four sides of the elevator car 400 respectively, so as to complete the measurement operation. In this way, the laser rangefinder 2051 only needs to be installed on one side of the elevator car 400, which is more convenient to operate and improve the installation efficiency. When the car 400 rotates on adjacent surfaces, the positioning slider 2021 is driven to slide outward as a whole through the guidance of the outer convex groove 2033 and the reversing groove 2032, pushing the push rod 2046 to move, and the push rod 2046 drives the arch bracket 204 to flip through the rocker arm 2043. At this time, the laser rangefinder 2051 on the arch bracket 204 becomes vertical, so as to measure the distance from the top of the car to the top of the shaft. This method can reduce the number of laser rangefinders used, save measurement costs, and reduce the occurrence of signal interference.

[0041] The shift unit 300 includes a driving gear 301 and a guide rack 302. The driving gear 301 is provided with a gear shaft 3011 at its rotation center. The gear shaft 3011 is connected to the rotation center of the synchronous plate 205. The guide rack 302 is installed at the bottom of the mounting cavity 1011. The guide rack 302 corresponds to the reversing groove 2032. The guide rack 302 is adapted to the driving gear 301. The center angle of the guide rack 302 is smaller than the center angle of the reversing groove 2032. When the laser rangefinder 2051 becomes vertical, as the connecting plate 201 continues to move, the laser rangefinder 2051 and the driving gear 301 at the bottom of the synchronous plate 205 can drive the guide rack 302 to roll upward, and finally drive the synchronous plate 205 and the laser rangefinder 2051 to rotate, thereby increasing the measurement range and further improving the measurement accuracy.

[0042] like Figures 1 to 8 As shown, in a specific embodiment, a pair of vertical plates 1012 are installed at the bottom of the cover body 101, and a mounting plate 1014 is welded at the bottom of the pair of vertical plates 1012. A reinforcing rib 1013 is installed at the connection between the mounting plate 1014 and the vertical plate 1012. The reinforcing rib 1013 is triangular, and mounting holes 1015 are opened at the four corners of the mounting plate 1014. Locking bolts are installed inside the mounting holes 1015, and the locking bolts are used to connect the mounting plate 1014 and the elevator car 400. The above structure ensures that the cover body 101 is stably installed on the surface of the elevator car 400.

[0043] like Figures 1 to 8 As shown, further, a cover body 102 is installed on the cover body 101, a handle 1021 is installed on the cover body 102, and an anti-slip groove is provided on the surface of the handle 1021, and a slide rail 1022 is installed at the bottom of the cover body 102, and the slide rail 1022 is slidably set in an inner groove 1023 provided on the side wall of the cover body 101, and a notch 1024 is provided on the surface of the cover body 102, and the arch bracket 204 movably passes through the notch, and the cover body 102 is connected to the turntable 2011. When the turntable 2011 rotates, the turntable 2011 can drive the cover body 102 to rotate, and the slide rail 1022 at the bottom of the cover body 102 slides in the inner groove 1023, thereby achieving the purpose of guidance.

[0044] Embodiment 2:

[0045] The difference between Example 1 and this Example is that: Figures 1 to 8As shown, the outer shell of the driving motor 2013 is fixedly installed at the bottom of the cover body 101, and a synchronous shaft 2012 is installed at the output end of the driving motor 2013. The synchronous shaft 2012 movably passes through the cover body 101, and the end of the synchronous shaft 2012 is connected to the turntable 2011. The synchronous shaft 2012 movably passes through the fixed block 3021 installed at the end of the guide rack 302, and the fixed block 3021 is located at the center of the cover body 101. The synchronous shaft 2012 connected to the output shaft is driven to rotate by the driving motor 2013, and a turntable 2011 is installed at the end of the synchronous shaft 2012, so the turntable 2011 can rotate at this time.

[0046] like Figures 1 to 8 As shown, in a specific embodiment, a positioning slot 202 is provided on the connection plate 201, and the positioning slot 202 is slidably connected to the positioning slider 2021. A limiting rod 2022 is installed on the positioning slot 202, and the limiting rod 2022 is distributed in a transverse direction. The limiting rod 2022 is slidably connected to the positioning slider 2021. A limiting spring 2023 is sleeved on the side wall of the limiting rod 2022, and one end of the limiting spring 2023 is clamped on the side wall of the positioning slot 202, and the other end is clamped on the side wall of the positioning slider 2021. When the positioning slider 2021 slides in the positioning slot 202, and the positioning slider 2021 also slides on the surface of the limiting rod 2022, the limiting spring 2023 on the limiting rod 2022 is compressed, and the compressed limiting spring 2023 facilitates the reset operation later.

[0047] like Figures 1 to 8 As shown, further, a protrusion 2024 is fixedly installed at the bottom of the positioning slider 2021, the surface of the protrusion 2024 is chamfered, the protrusion 2024 is slidably connected with the outer convex groove 2033, the outer convex groove 2033 is arched, and the reversing groove 2032 is an arc groove. Several pairs of the outer convex grooves 2033 and the reversing grooves 2032 alternately form an annular groove.

[0048] Embodiment 3:

[0049] The difference between Example 2 and this example is that: Figures 1 to 8As shown, a connecting shaft 2053 is rotatably installed inside the arch support 204, one end of the connecting shaft 2053 is interconnected with the rotation center of the synchronous plate 205, and the other end of the connecting shaft 2053 is interconnected with the gear shaft 3011. The synchronous plate 205 is in a horizontal state, and the spacing between the several pairs of laser rangefinders 2051 is the same. A pair of positioning seats 2041 are installed on the surface of the connecting plate 201, and the pair of positioning seats 2041 are located on both sides of the positioning slider 2021. A positioning shaft 2042 is rotatably installed between the pair of positioning seats 2041, and the two ends of the positioning shaft 2042 are respectively connected to the arch support 204, and the positioning shaft 2042 is connected to the rocker arm 2043. The rocker arm 2043 is in an inclined state, and a strip groove 2044 is opened on the rocker arm 2043, and a slide rod 2045 is slidably arranged on the strip groove 2044. Push rods 2046 are connected to the two ends of the slide rod 2045, and the push rod 2046 is in an inclined state. When the positioning slider 2021 slides outward, the push rod 2046 on the positioning slider 2021 slides synchronously, and the push rod 2046 will drive the slide bar 2045 to slide, and the slide bar 2045 slides on the bar groove 2044 of the rocker arm 2043, thereby driving the rocker arm 2043 to rotate, and the rocker arm 2043 drives the positioning shaft 2042 to rotate. Finally, the positioning shaft 2042 can drive the arch bracket 204 to rotate ninety degrees. At this time, the synchronization plate 205 on the arch bracket 204 can drive the opening of the laser rangefinder 2051 to face vertically upward, and then the laser distance sensor 2052 in the laser rangefinder 2051 can complete the measurement of the distance between the elevator car 400 and the top of the shaft.

[0050] like Figures 1 to 8 As shown, in a specific embodiment, a coil spring 3012 is provided at the connection between the gear shaft 3011 and the arch bracket 204, and a through hole 3013 is opened on the surface of the connecting plate 201. The position of the through hole 3013 corresponds to the position of the driving gear 301. After the gear shaft 3011 and the driving gear 301 rotate, the coil spring 3012 is twisted at this time, and the coil spring 3012 is used to facilitate later resetting and maintain the initial position.

[0051] The implementation principle of an elevator installation gap measuring device of the present invention is as follows:

[0052] When the elevator is installed in the hoistway, the operator needs to install the installation unit 100 as a whole above the elevator car 400 to ensure that the installation unit 100 is at the center of the top of the elevator car 400.

[0053] The specific installation steps are: first place the mounting plate 1014 as a whole on the upper surface of the elevator car 400, and pass the locking bolt through the mounting hole 1015 to complete the connection between the mounting plate 1014 and the elevator car 400. At this time, the mounting unit 100 can be fixed on the elevator car 400, and then the operator can use the measuring unit 200 and the shifting unit 300 to measure the lateral distance between the elevator car 400 and the shaft wall and the distance between the elevator car 400 and the top of the shaft.

[0054] First, the operator needs to start the driving motor 2013, and the driving motor 2013 drives the synchronous shaft 2012 connected to the output shaft to rotate, and a turntable 2011 is installed at the end of the synchronous shaft 2012, so the turntable 2011 can rotate at this time, when the connecting plate 201 on the surface of the turntable 2011 starts to rotate inside the cover body 101 synchronously, and the turntable 2011 and the connecting plate 201 rotate 90 degrees as a cycle, as shown in FIG. Figure 5 As shown, this is the initial state. In the initial state, the arch support 204 and the synchronous plate 205 on the connecting plate 201 are parallel to the side wall of the elevator car 400, so the laser rangefinder 2051 on the synchronous plate 205 can measure the distance from the elevator car 400 to the shaft wall (the side wall distance is measured only when the synchronous plate 205 and the side wall of the elevator car 400 are parallel to each other).

[0055] When the connecting plate 201 starts to rotate from the initial position, the connecting plate 201 starts to slide along the outer convex groove 2033. At this time, the protrusion 2024 at the bottom of the connecting plate 201 can slide from the outer convex groove 2033 to the reversing groove 2032. In this process, the protrusion 2024 slides outward at this time, and the protrusion 2024 can drive the positioning slider 2021 to slide in the positioning slide groove 202, and the positioning slider 2021 also slides on the surface of the limit rod 2022. At this time, the limit spring 2023 on the limit rod 2022 is compressed, and the compressed limit spring 2023 facilitates the subsequent resetting operation.

[0056] When the positioning slider 2021 slides outward, the push rod 2046 on the positioning slider 2021 slides synchronously, and the push rod 2046 will drive the slide bar 2045 to slide, and the slide bar 2045 slides on the bar groove 2044 of the rocker arm 2043, thereby driving the rocker arm 2043 to rotate, and the rocker arm 2043 drives the positioning shaft 2042 to rotate. Finally, the positioning shaft 2042 can drive the arch bracket 204 to rotate ninety degrees. At this time, the synchronization plate 205 on the arch bracket 204 can drive the opening of the laser rangefinder 2051 to face vertically upward, and then the laser distance sensor 2052 in the laser rangefinder 2051 can complete the measurement of the distance between the elevator car 400 and the top of the shaft.

[0057] When the arch bracket 204 flips over, the gear shaft 3011 on the synchronization plate 205 drives the driving gear 301 to rotate. At this time, the driving gear 301 rotates from the through hole 3013 to the installation cavity 1011, so that the driving gear 301 and the guide rack 302 are located on the same plane. During this process, the driving gear 301 and the guide rack 302 will not interfere with each other.

[0058] Therefore, when the protrusion 2024 moves to the center of the reversing groove 2032 at a later stage, the flipped driving gear 301 rotates synchronously around the center, and finally the driving gear 301 can mesh with the guide rack 302, thereby driving the gear 301 to rotate, and the driving gear 301 drives the gear shaft 3011 to rotate, and the gear shaft 3011 drives the synchronous plate 205 equipped with the laser rangefinder 2051 to rotate, thereby increasing the measurement range and improving the measurement accuracy.

[0059] When the driving gear 301 and the guide rack 302 are disengaged, the position of the laser rangefinder 2051 of the gear shaft 3011 is reset by the coil spring 3012. Later, when the protrusion 2024 slides back to the next outer protrusion groove 2033, the laser rangefinder 2051 rotates again to measure the distance from the other side of the elevator car 400 to the shaft wall. By repeating the above operation, the distance from the shaft wall to the four sides of the elevator car 400 can be measured alternately, and the distance between the top of the shaft and the top of the elevator car can also be measured, making the measurement easier.

Claims

1. An elevator installation gap measuring device, comprising an installation unit (100) installed on the top of an elevator car (400), a measuring unit (200) and a displacement unit (300), characterized in that: The installation unit (100) comprises a cover body (101), the cover body (101) is installed at the top center of the elevator car (400), and an installation cavity (1011) is opened inside the cover body (101); The measuring unit (200) comprises a turntable (2011), the turntable (2011) is rotatably mounted at the center of the installation cavity (1011), a driving motor (2013) is mounted at the rotation center of the turntable (2011), a pair of connecting plates (201) are mounted on the side walls of the turntable (2011), a positioning slider (2021) is slidably mounted on the pair of connecting plates (201), a positioning plate (203) is mounted inside the installation cavity (1011), four protrusions (2031) are formed on the positioning plate (203), the four protrusions (2031) correspond to the four side walls of the elevator car (400), the four protrusions (2031) are each formed with an external convex groove (2033), adjacent external convex grooves (2033) are connected to each other. 33), a reversing groove (2032) is connected between the two parts, and the reversing groove (2032) is provided on the positioning plate (203), the positioning slider (2021) is slidably connected to the corresponding outer convex groove (2033), an arch bracket (204) is rotatably mounted on the connecting plate (201), a synchronous plate (205) is rotatably mounted on the side wall of the arch bracket (204), a plurality of pairs of laser rangefinders (2051) are mounted on the synchronous plate (205), each of the laser rangefinders (2051) is mounted with a laser distance sensor (2052), a rocker arm (2043) is mounted at the rotation center of the arch bracket (204), and the rocker arm (2043) is slidably connected to a push rod (2046) mounted on the surface of the positioning slider (2021); The shift unit (300) comprises a driving gear (301) and a guide rack (302); a gear shaft (3011) is installed at the rotation center of the driving gear (301); the gear shaft (3011) is connected to the rotation center of the synchronization plate (205); the guide rack (302) is installed at the bottom of the installation cavity (1011), and the guide rack (302) corresponds to the reversing groove (2032); the guide rack (302) is adapted to the driving gear (301); and the center angle of the guide rack (302) is smaller than the center angle corresponding to the reversing groove (2032).

2. An elevator installation gap measuring device according to claim 1, characterized in that: A pair of vertical plates (1012) are installed at the bottom of the cover body (101), and a mounting plate (1014) is welded to the bottom of the pair of vertical plates (1012). A reinforcing rib (1013) is installed at the connection between the mounting plate (1014) and the vertical plate (1012), and the reinforcing rib (1013) is triangular. Mounting holes (1015) are opened at the four corners of the mounting plate (1014), and locking bolts are installed inside the mounting holes (1015), and the locking bolts are used to connect the mounting plate (1014) and the elevator car (400).

3. The elevator installation gap measuring device according to claim 1, characterized in that: The cover body (101) is provided with a cover body (102), the cover body (102) is provided with a handle (1021), and the handle (1021) is provided with an anti-slip groove on its surface, a slide rail (1022) is provided at the bottom of the cover body (102), the slide rail (1022) is slidably arranged in an inner groove (1023) provided on the side wall of the cover body (101), a notch (1024) is provided on the surface of the cover body (102), the arch support (204) movably passes through the notch, and the cover body (102) and the turntable (2011) are connected to each other.

4. The elevator installation gap measuring device according to claim 1, characterized in that: The housing of the driving motor (2013) is fixedly mounted on the bottom of the cover body (101); a synchronous shaft (2012) is mounted on the output end of the driving motor (2013); the synchronous shaft (2012) movably passes through the cover body (101); the end of the synchronous shaft (2012) is connected to the rotating disk (2011); the synchronous shaft (2012) movably passes through a fixed block (3021) mounted on the end of the guide rack (302); and the fixed block (3021) is located at the center of the cover body (101).

5. The elevator installation gap measuring device according to claim 1, characterized in that: The connecting plate (201) is provided with a positioning slot (202), the positioning slot (202) is slidably connected to the positioning slide block (2021), a limiting rod (2022) is installed on the positioning slot (202), the limiting rod (2022) is distributed in a transverse direction, the limiting rod (2022) is slidably connected to the positioning slide block (2021), a limiting spring (2023) is sleeved on the side wall of the limiting rod (2022), one end of the limiting spring (2023) is clamped on the side wall of the positioning slot (202), and the other end is clamped on the side wall of the positioning slide block (2021).

6. The elevator installation gap measuring device according to claim 1, characterized in that: A protrusion (2024) is fixedly mounted on the bottom of the positioning slider (2021), the surface of the protrusion (2024) is chamfered, the protrusion (2024) is slidably connected to the outer convex groove (2033), the outer convex groove (2033) is arched, the reversing groove (2032) is an arc groove, and a plurality of pairs of the outer convex groove (2033) and the reversing groove (2032) alternately form an annular groove.

7. The elevator installation gap measuring device according to claim 1, characterized in that: A connecting shaft (2053) is rotatably mounted inside the arch support (204), one end of the connecting shaft (2053) is interconnected with the rotation center of the synchronous plate (205), and the other end of the connecting shaft (2053) is interconnected with the gear shaft (3011), the synchronous plate (205) is in a horizontal state, and the spacing between the pairs of laser rangefinders (2051) is the same.

8. The elevator installation gap measuring device according to claim 1, characterized in that: A pair of positioning seats (2041) are installed on the surface of the connecting plate (201), the pair of positioning seats (2041) are located on both sides of the positioning slider (2021), a positioning shaft (2042) is rotatably installed between the pair of positioning seats (2041), the two ends of the positioning shaft (2042) are respectively connected to the arch support (204), and the positioning shaft (2042) is connected to the rocker arm (2043).

9. The elevator installation gap measuring device according to claim 1, characterized in that: The rocker arm (2043) is in an inclined state. A strip groove (2044) is provided on the rocker arm (2043). A sliding rod (2045) is slidably provided on the strip groove (2044). Push rods (2046) are connected to both ends of the sliding rod (2045). The push rod (2046) is in an inclined state.

10. The elevator installation gap measuring device according to claim 1, characterized in that: A coil spring (3012) is provided at the connection between the gear shaft (3011) and the arch support (204), and a through hole (3013) is provided on the surface of the connecting plate (201), and the position of the through hole (3013) corresponds to the position of the driving gear (301).

Images