Raised floor flatness measurement equipment

Abstract

A raised floor flatness measurement equipment is provided. The raised floor flatness measurement includes a conveying device, a measuring device, a positioning device, and a lifting device for the raised floor. The measuring device consists of a sensor fixing plate, a sensor, a probe, and four board surface zero-point positioning blocks. The sensor is mounted on the sensor fixing plate, the probe is connected to the sensor, and the four board surface zero-point positioning blocks are distributed on the sensor fixing plate. When the conveying device transports the raised floor to the measuring station, the positioning device is used to position the raised floor's side plates. The lifting device for the raised floor includes four lifting mechanisms for the raised floor and a driving motor. The driving motor drives the four lifting mechanisms to move the raised floor and bring it into contact with the four board surface zero-point positioning blocks. In additional, a lifting mechanism is also provided.

Description

Technical Field

[0001] This disclosure relates to a measuring device and a lifting mechanism, and more particularly to a lifting mechanism and a planar measuring device for raised floors. Prior Technology

[0002] Raised floor is a flooring system widely used in semiconductor factories, offices, computer rooms, and other similar locations. It essentially consists of a supporting frame and multiple height-adjustable floor panels. These panels are raised above the ground, creating a space for the installation of electrical wires, cables, pipes, and other wiring, while also improving airflow and heat dissipation.

[0003] To ensure the flatness of the entire raised floor surface, it is necessary to check the flatness of the raised floor to avoid errors or structural problems after assembly. Methods for measuring the flatness of raised floors typically involve visually inspecting the horizontal line, requiring comparison at two or more points. Alternatively, a ruler or measuring rod can be used. The ruler is placed at different locations on the floor to check if it touches the ground; any unevenness indicates a flatness problem. However, these methods are often labor-intensive, rely heavily on the experience and judgment of on-site engineers, and reduce overall project efficiency. Summary of the Invention

[0004] This disclosure provides a device for measuring the flatness of raised floors, suitable for transmitting and measuring the flatness of raised floors, improving measurement accuracy, reducing and avoiding errors or structural problems caused after assembly, and improving overall engineering efficiency.

[0005] Furthermore, in one embodiment of the raised floor plan measurement device, the raised floor lifting device has four lifting mechanisms configured as a synchronous drive mechanism to synchronously execute lifting actions, so that the raised floor can be raised or lowered to a predetermined position, thus avoiding the generation of positional differences in the upward movements of the four lifting mechanisms.

[0006] Furthermore, the lifting mechanism disclosed herein, in addition to its rapid lifting module being able to quickly raise the predetermined height, can also compensate for fitting errors through air pressure regulation of the slow lifting module. One embodiment of the raised floor plan measurement device may also include a lifting mechanism.

[0007] This disclosure discloses an embodiment of a raised floor planarity measurement device, suitable for transmitting and measuring the flatness of a top panel of a raised floor. Multiple side panels of the raised floor are vertically connected to the perimeter of the top panel. The raised floor planarity measurement device includes a conveying device, a measuring device, a positioning device, and a lifting device for the raised floor. The conveying device includes a waiting station, a measuring station, and an output station along a conveying direction, wherein the measuring station is located between the waiting station and the output station. The conveying device is used to convey the raised floor along the conveying direction. The measuring device is located at the measuring station and includes a sensor mounting plate, multiple sensors, multiple probes, and four zero-point positioning blocks for the board surface. The sensor mounting plate includes a receiving portion and a detection surface. The sensors are respectively disposed at different positions in the receiving portion. The positions of the probes correspond to the positions of the sensors, and the probes are connected to the corresponding sensors. One end of the probe protrudes from the detection surface of the sensor mounting plate, and these probes are arranged in an array. The four zero-point positioning blocks for the board surface are disposed at the four corners of the detection surface of the sensor mounting plate. The positioning device is located at the measurement station. When the conveying device transports the raised floor to the measurement station along the conveying direction, the top plate of the raised floor is located below the sensor mounting plate. The positioning device is used to position the side plates of the raised floor so that the position of the top plate corresponds to the position of the detection surface of the sensor mounting plate. The lifting device of the raised floor is located at the measurement station. The lifting device of the raised floor includes four lifting mechanisms and at least one drive motor. The four lifting mechanisms are respectively supported at the four corners of the raised floor, and the positions of the four lifting mechanisms correspond to the positions of the four zero-point positioning blocks of the plate surface in the measurement device. The at least one drive motor drives the four lifting mechanisms to move synchronously along a lifting direction so that the raised floor moves along the lifting direction and contacts the four zero-point positioning blocks of the plate surface.

[0008] In one embodiment, the five probes are respectively arranged around the perimeter, and a first row, a second row and a third row of probes are arranged within these probes around the perimeter. The first row and the third row each have six probes arranged in two rows. The second row has five probes arranged in two rows, and the probes face the top panel.

[0009] In one embodiment, the positioning device includes a first positioning element, a second positioning element, a third positioning element, a fourth positioning element, a fifth positioning element, a first push cylinder, and a second push cylinder. The first positioning element, the first push cylinder, the second positioning element, and the second push cylinder are arranged along the conveying direction. The first push cylinder is connected to the first positioning element, and the second push cylinder is connected to the second positioning element. The third, fourth, and fifth positioning elements are located on opposite sides of the conveying direction. The first positioning element includes a positioning plate, a rack, and a circular gear. One end of the rack is connected to the first push cylinder, and the other end of the rack is connected to the circular gear, which is connected to the positioning plate. The conveying device includes a conveying structure with a conveying direction. The conveying structure is a chain transmission drive structure, which includes two chain assemblies. A measuring device is disposed on the two chain assemblies. A first positioning element, a second positioning element, a first push cylinder, and a second push cylinder are respectively located between the two chain assemblies. Driven by the second positioning element, the second push cylinder can move up and down in a lifting direction, so that the second push cylinder can protrude from the setting position of the two chain assemblies.

[0010] In one embodiment, the conveying structure includes a main body, a first gear assembly and a second gear assembly, and a drive motor. The first gear assembly and the second gear assembly are respectively located at both ends of the main body, and a chain assembly is connected to the first gear assembly and the second gear assembly respectively. The drive motor is connected to the second gear assembly. When the drive motor drives the second gear assembly, the second gear assembly drives the chain assembly to rotate. The rotation of the chain assembly drives the first gear assembly to rotate, so that the first gear assembly and the second gear assembly can rotate synchronously, and the chain assembly can move along the conveying direction.

[0011] In one embodiment, the conveying device includes a first frame, a second frame, a support frame, and a conveying structure. The first and second frames are respectively disposed below the conveying structure, and the support frame is located between the first and second frames. The first frame is located at the waiting station in the conveying structure, the second frame is located at the output station in the conveying structure, and the support frame is located at the measuring station in the conveying structure. A measuring device, a positioning device, and a lifting device for the raised floor are respectively disposed between the first and second frames, and the measuring device, positioning device, and lifting device for the raised floor are respectively disposed above the support frame. The planar measurement device for the raised floor further includes two limiting devices, which are respectively disposed on both sides of the conveying structure.

[0012] In one embodiment, the lifting device of the raised floor includes a belt, two first support plates, and two second support plates. The two ends of the first support plates are respectively connected to the second support plates to form a square frame. The four lifting mechanisms include a fast lifting module and a slow lifting module. Each fast lifting module includes a screw and a drive wheel. Each slow lifting module includes a contact block. The lower ends of the screws of the four lifting mechanisms are respectively fixed to the two ends of the first support plates. The belt is wound around the corresponding drive wheels and drive motors of the four lifting mechanisms to form a synchronous drive mechanism. The four contact blocks correspond to the positions of the four zero-point positioning blocks on the plate surface.

[0013] In one embodiment, the four lifting mechanisms each include a fast lifting module and a slow lifting module. The fast lifting module is fixed above the corresponding slow lifting module, and each slow lifting module and the corresponding fast lifting module lift and lower synchronously.

[0014] In one embodiment, each of the rapid lifting modules includes a T-nut connector and a connecting flange. The T-nut connector includes a T-nut, at least one bearing, a nut, a drive wheel connector, and a drive wheel. The T-nut can be fixed together with the drive wheel and rotate synchronously through the drive wheel connector. The connecting flange includes an upper connecting flange and a lower connecting flange. The upper connecting flange is connected to the lower connecting flange. The upper end of one of the screws is fixed to the lower connecting flange. The lower end of the screw is sequentially inserted through the nut, the T-nut, at least one bearing, the drive wheel connector, and the drive wheel.

[0015] In one embodiment, each of the four lifting mechanisms includes a T-shaped connector, each slow lifting module includes a cylinder power source, each cylinder power source includes a cylinder body and a piston, each piston can move within the corresponding cylinder body, and each contact block is fixed to the top of one of the corresponding pistons, so that the cylinder power source slowly raises and lowers the contact block to adjust the height of the contact block. One end of each T-shaped connector is connected to a connecting flange, and the other end of the T-shaped connector is provided with a fixed base. The connecting flanges and fixed bases at both ends of the T-shaped connector are respectively connected and fixed to the fast lifting module and the slow lifting module.

[0016] In one embodiment, the cylinder power source includes at least one intake and exhaust port and a plurality of fixed rods. At least one intake and exhaust port is provided on the cylinder body. The piston includes a protruding end connected to the top. One end of each of the fixed rods passes through the cylinder body, and the other end of each fixed rod is connected to the top, so that the piston and the fixed rods can be linked to the contact block.

[0017] In one embodiment, the T-nut connector includes a bearing housing, which houses a bearing located between the T-nut and the bearing housing. A nut is locked to the upper end of the T-nut to fix the position of the bearing. A transmission wheel connector is fixed inside the transmission wheel, and the transmission wheel drives the transmission wheel connector and the connected T-nut to rotate. The rotation of the T-nut drives the screw to move up and down in a linear motion.

[0018] In one embodiment, the T-nut connector includes a retainer, a C-ring, and two deep groove bearings. The C-ring, the two deep groove bearings, and the retainer are respectively disposed on the outer periphery of the T-nut. One of the deep groove bearings is disposed at each of the upper and lower ends of the retainer. The retainer is used to fix the position of the two deep groove bearings. The C-ring is located between one of the deep groove bearings to fix the position of the bearing.

[0019] In one embodiment, the upper end of the screw is connected and fixed to the lower end of a first bolt. The upper end of the first bolt is a bolt head, which passes through a countersunk hole in the lower connecting flange and is locked in a threaded hole at the upper end of the screw, so as to fix the screw and the lower connecting flange as a whole, and the bolt head is fixedly connected to the countersunk hole of the lower connecting flange; the fixing base of the T-shaped connector uses a second bolt to pass through the bottom of the cylinder power source and lock in the threaded hole of the fixing base, so as to connect and fix the cylinder power source to the fixing base.

[0020] In one embodiment, the drive wheel and the T-nut are fixed together by means of at least one fixing screw sequentially passing through one of the corresponding through holes of the drive wheel, the drive wheel connector and the T-nut.

[0021] This disclosure discloses another embodiment of a lifting mechanism, including a fast lifting module, a slow lifting module, and a T-shaped connector. The slow lifting module is fixed above the fast lifting module. The fast lifting module can quickly lift to a predetermined height, and the slow lifting module rises and falls synchronously with the fast lifting module. The fast lifting module includes a T-shaped nut connector, a connecting flange, and a screw. The T-shaped nut connector includes a T-shaped nut, at least one bearing, a nut, a drive wheel connector, and a drive wheel. The T-shaped nut is fixed to the drive wheel and rotates synchronously with it via the drive wheel connector. The connecting flange includes an upper connecting flange and a lower connecting flange, with the upper connecting flange connected to the lower connecting flange. One upper end of the screw is fixed to the lower connecting flange, and the lower end of the screw is sequentially inserted through a nut, a T-shaped nut, at least one bearing, a drive wheel connector, and a drive wheel. The slow lifting module includes a cylinder power source and a contact block. The cylinder power source includes a cylinder body and a piston, which can move within the cylinder body. A contact block is fixed to the top of one of the pistons, allowing the cylinder power source to slowly raise and lower the contact block to adjust its height. One end of the T-shaped connector is connected to a connecting flange, and the other end of the T-shaped connector is equipped with a fixed base. The connecting flanges and fixed bases at both ends of the T-shaped connector are respectively connected to and fixed the fast lifting module and the slow lifting module.

[0022] Based on the above, this disclosure measures the flatness of the raised floor during the transmission process, improves measurement accuracy, reduces and avoids errors or structural problems after assembly, and improves overall engineering efficiency.

[0023] Furthermore, the number of probes and sensors disclosed herein can be adjusted according to the actual size or requirements of the roof of the raised floor being measured, so as to improve the accuracy of the flatness measurement.

[0024] In addition, this disclosure uses a zero-point positioning block on the panel to fix and confirm the position of the measuring device and the four corners of the raised floor ceiling, so as to ensure the relative position of the probe and the ceiling.

[0025] In addition, this disclosure describes the use of a positioning device to position the raised floor around its perimeter during transmission, thereby ensuring the relative position of the raised floor and the measuring device and thus ensuring the accuracy of subsequent measurements.

[0026] Furthermore, this disclosure utilizes the lifting device of the raised floor to form a synchronous drive mechanism with the four lifting mechanisms installed thereon, so that the lifting action is performed synchronously, allowing the raised floor to be raised or lowered to a predetermined position, thus avoiding the generation of positional differences in the upward movement of the four lifting mechanisms.

[0027] Furthermore, the lifting mechanism disclosed herein has two independent fast lifting modules and slow lifting modules. In addition to being able to quickly raise the predetermined height through its fast lifting module, it can also compensate for fitting errors through air pressure regulation of the slow lifting module.

[0028] To make this disclosure clearer and easier to understand, specific embodiments are provided below, along with detailed descriptions in conjunction with the accompanying drawings. Simple Explanation of the Diagram

[0029] Figure 1 is a perspective view of a planar measurement device for an elevated floor according to the present disclosure. Figure 2 is a perspective view of an embodiment of a raised floor according to the present disclosure. Figure 3 is a partial perspective view of the planar measurement equipment for the raised floor according to this disclosure. Figure 4 is a perspective view of an embodiment of the measuring device according to the present disclosure. Figure 5 is a perspective view of a reverse embodiment of the measuring device according to the present disclosure. Figure 6A is a side view of an angle of an embodiment of the measuring device according to the present disclosure. Figure 6B is a side view of an embodiment of the measuring device according to this disclosure from another angle. Figure 7 is a perspective view of the positioning device and the lifting device of the raised floor according to the present disclosure. Figure 8 is a top view of the positioning device and the lifting device of the raised floor according to this disclosure. Figure 9 is a side view of the positioning device and the lifting device of the raised floor according to the present disclosure. Figure 10 is a perspective view of an embodiment of a lifting device for an elevated floor according to the present disclosure. Figure 11 is a schematic diagram of an embodiment of a lifting device for an elevated floor according to the present disclosure in the raised position. Figure 12 is a schematic diagram of an embodiment of a lifting device for an elevated floor according to the present disclosure at the origin position. Figure 13A is a schematic diagram of an embodiment of the lifting mechanism according to the present disclosure in the lifting position. Figure 13B is a schematic diagram of an embodiment of the lifting mechanism according to the present disclosure at the origin position. Figure 14A is an exploded view of the corresponding components in the cross-sectional schematic diagram of the lifting mechanism according to this disclosure. Figure 14B is an exploded view of the lower connecting flange and bolt according to this disclosure. Figure 15A is a cross-sectional schematic diagram of an embodiment of the lifting mechanism according to the present disclosure in the lifting position. Figure 15B is a cross-sectional schematic diagram of an embodiment of the lifting mechanism according to the present disclosure at the origin position. Implementation

[0030] The following description provides detailed examples and accompanying drawings, but these examples are not intended to limit the scope of this disclosure. Furthermore, the drawings are for illustrative purposes only and are not drawn to scale. For ease of understanding, the same elements will be designated with the same symbols in the following description.

[0031] The terms "including," "containing," and "having" used in this disclosure are all open-ended, meaning "including but not limited to."

[0032] In the description of the various embodiments, when the terms "first," "second," "third," "fourth," etc. are used to describe elements, they are only used to distinguish these elements from each other and do not limit the order or importance of these elements.

[0033] In the description of the various embodiments, the term "coupled" or "connected" may refer to two or more elements making direct physical or electrical contact with each other, or making indirect physical or electrical contact with each other. "Coupled" or "connected" may also refer to two or more elements operating or moving with each other.

[0034] In the description of the various embodiments, the term "module" refers to a hardware module, that is, a hardware component that occupies space. In other embodiments, the term "module" may also refer to a hardware module plus a software module, that is, a "module" has software programs in addition to hardware components.

[0035] Figure 1 is a perspective view of the planar measurement device for raised floors according to the present disclosure. Figure 2 is a perspective view of an embodiment of the raised floor according to the present disclosure. Figure 3 is a partial perspective view of the planar measurement device for raised floors according to the present disclosure. In Figure 3, the measuring device 52 is omitted to show the positioning device 53 and the lifting device 54 of the raised floor. Referring to Figures 1 to 3, the planar measurement device 50 for raised floors disclosed in the present disclosure is provided along a conveying direction LA, including a waiting station LA1, a measuring station LA2, and an output station LA3. The measuring station LA2 is located between the waiting station LA1 and the output station LA3.

[0036] For example, the raised floor flatness measuring device 50 is suitable for transmitting and measuring the flatness of the top plate 42 of a raised floor 40 as shown in Figure 2. The raised floor 40 is input from the waiting station LA1 to the measuring station LA2, where the flatness of the top plate 42 of the raised floor 40 is measured. After the flatness is measured, the raised floor 40 is then transmitted to the output station LA3.

[0037] It should be noted that the raised floor 40 disclosed herein has a rectangular shape and includes a ceiling 42 and four side panels 44. These side panels 44 are vertically connected to the perimeter of the ceiling 42. The dimensions of the raised floor 40 disclosed herein are, for example, [missing information]. The dimensions, and are made of materials such as die-cast aluminum alloy.

[0038] The raised floor plan measurement device 50 includes a conveying device 51, a measuring device 52, a positioning device 53, a raised floor lifting device 54, and selectively provided multiple limiting devices 55 and at least one removal positioning element 56. The conveying device 51 is used to convey the raised floor 40 as shown in Figure 2 along the conveying direction LA. The conveying device 51 includes a first frame 511, a second frame 512, and a conveying structure 514.

[0039] The conveying structure 514 in the conveying device 51 has a conveying direction LA, and along the conveying direction LA, it may include a waiting station LA1, a measuring station LA2, and an output station LA3. The first frame 511 and the second frame 512 are respectively located under the conveying structure 514. The first frame 511 is located at the waiting station LA1 in the conveying structure 514, and the second frame 512 is located at the output station LA3 in the conveying structure 514.

[0040] The measuring device 52, the positioning device 53, and the lifting device 54 of the raised floor are all located at the measuring station LA2 in the conveying structure 514, so that the measuring device 52, the positioning device 53, and the lifting device 54 of the raised floor are all located between the first frame 511 and the second frame 512. In this way, the raised floor 40 as shown in Figure 2 can be transferred from the first frame 511 located at the waiting station LA1 to the second frame 512 at the output station LA3 by the conveying structure 514.

[0041] In one embodiment, the conveying structure 514 may be a chain transmission drive structure, which includes a main body 5142, a chain assembly 5144, a plurality of gear assemblies including a first gear assembly 5146A and a second gear assembly 5146B, and a drive motor 5148. The main body 5142 is, for example, a frame, with a first frame 511 and a second frame 512 respectively disposed below the main body 5142. The first gear assembly 5146A and the second gear assembly 5146B are respectively disposed at both ends of the main body 5142, and the chain assembly 5144 is connected to the first gear assembly 5146A and the second gear assembly 5146B respectively. The drive motor 5148 is connected to the second gear assembly 5146B.

[0042] When the drive motor 5148 drives the second gear assembly 5146B, the first gear assembly 5146A and the second gear assembly 5146B rotate synchronously. At the same time, the first gear assembly 5146A and the second gear assembly 5146B can drive the chain assembly 5144 to move, so that the chain assembly 5144 can move along the conveying direction LA.

[0043] In one embodiment, as shown in Figure 2, the back side 46 of the raised floor 40 can be placed on the chain assembly 5144, and the raised floor 40 is transported from the waiting station LA1 to the output station LA3 by the chain assembly 5144. The back side 46 refers to the side opposite to the top plate 42, that is, the top plate 42 of the raised floor 40 does not contact the chain assembly 5144. When the raised floor 40 is transported to the measurement station LA2 by the chain assembly 5144, the raised floor 40 is located between the chain assembly 5144 and the measurement device 52, that is, the top plate 42 of the raised floor 40 is located below the measurement device 52.

[0044] The first gear assembly 5146A and the second gear assembly 5146B, as disclosed herein, are, for example, two gears, and are disposed at both ends of the main body 5142. The two chain assemblies 5144 are respectively disposed on the main body 5142. The chain assembly 5144 may include a chain, guide groove, rollers, etc., but this disclosure does not limit the structure of the chain assembly 5144. The drive motor 5148 may include a chain to connect to the second gear assembly 5146B, so that the drive motor 5148 drives the second gear assembly 5146B to rotate. Simultaneously, when the second gear assembly 5146B rotates, it drives the chain assembly 5144 to rotate. Through the rotation of the chain assembly 5144, the first gear assembly 5146A is driven to rotate, so that the first gear assembly 5146A and the second gear assembly 5146B can rotate synchronously, achieving the purpose of the conveying device 51 being able to carry at least one raised floor 40 and convey the raised floor 40 along the conveying direction LA.

[0045] In addition, in one embodiment, the planar measurement device 50 of the raised floor can selectively be equipped with limiting devices 55. Taking Figure 1 as an example, the two limiting devices 55 are located at the waiting station LA1, and the two limiting devices 55 are respectively located on both sides of the conveying structure 514. The setting height of the two limiting devices 55 can be higher than the setting height of the chain assembly 5144.

[0046] By setting the limiting device 55, the raised floor 40 is ensured to be restricted and positioned above the chain assembly 5144, so that the raised floor 40 can operate normally on the conveyor 51. The limiting device 55 is, for example, a plate, and the limiting device 55 can be set at any position on the conveyor 51 according to the actual situation. That is to say, in addition to setting the limiting device 55 at the waiting station LA1 as an example, it can also be set at the measuring station LA2 or the output station LA3.

[0047] In one embodiment, the conveying device 51 further includes a support frame 513, which is located between the first frame 511 and the second frame 512, and is situated at the measuring station LA2 in the conveying structure 514. The measuring device 52, the positioning device 53, and the lifting device 54 of the raised floor are all respectively located above the support frame 513, such that the measuring device 52, the positioning device 53, and the lifting device 54 of the raised floor are all located above the chain assembly 5144 in the conveying structure 514, with the measuring device 52 located above the positioning device 53 and the lifting device 54 of the raised floor.

[0048] Figure 4 is a perspective view of an embodiment of the measuring device according to the present disclosure. Figure 5 is a perspective view of a reverse embodiment of the measuring device according to the present disclosure. Figure 6A is a side view of an embodiment of the measuring device according to the present disclosure from one angle. Figure 6B is a side view of an embodiment of the measuring device according to the present disclosure from another angle. Referring to Figures 1, 4 to 6B, the measuring device 52 disclosed herein is located at the measuring station LA2 in the conveying structure 514, and the measuring device 52 is disposed on the chain assembly 5144. For example, as shown in Figure 1, four connecting posts 5132 are connected to the support frame 513, and the bottom of the measuring device 52 is respectively connected to these four connecting posts 5132, so that the measuring device 52 is disposed above the support frame 513. In addition, in one embodiment, both ends of each crossbar 5134 are respectively connected and fixed to the support frame 513 to stabilize the position of the support frame 513.

[0049] The measuring device 52 includes a sensor mounting plate 522, multiple sensors 524, multiple probes 526, and four zero-point positioning blocks 528. The sensor mounting plate 522 is a plate body containing a receiving portion S1 and a detection surface S2. The multiple sensors 524, such as 37 sensors 524, are respectively arranged at different positions in the receiving portion S1. Five sensors 524 are arranged around the perimeter, totaling 25 sensors 524. Within these 25 perimeter sensors 524, 17 additional sensors 524 are arranged to measure and simulate the evenly distributed positions of the ceiling 42 of the raised floor 40 as shown in Figure 2. Furthermore, as shown in Figure 4, the receiving portion S1 can be divided into different areas with an appropriate number of sensors 524 according to actual needs. Of course, the number of sensors 524 can be adjusted according to the actual size or requirements of the ceiling 42 of the raised floor 40 being measured.

[0050] The number of probes 526 is the same as the number of sensors 524. Each probe 526 is connected to a corresponding sensor 524, meaning the position of each probe 526 corresponds to the position of the sensor 524, and one end of each probe 526 protrudes from the detection surface S2 of the sensor mounting plate 522. These probes 526 face the ceiling 42 of the raised floor 40 as shown in Figure 2. The data obtained by these probes 526 is received by the corresponding sensors 524. These sensors 524 can receive this data and display it through a back-end control platform (not shown). The data from each probe 526 is recorded to determine where there are uneven areas on the ceiling 42 of the raised floor 40.

[0051] In one embodiment, the sensor 524 and its corresponding probe 526 are arranged in an array, such that the probe 526 can be arranged in a specific manner, such as by row, column, or other specified order. In a further embodiment, five sensors 524 and five corresponding probes 526 are arranged around the perimeter. The five probes are arranged in three rows within the perimeter probes. The first and third rows each have six probes 526, arranged in two rows. The second row has five probes 526. For example, by using these probes 526 to detect data at different positions of the ceiling 42 of the raised floor 40, the flatness deviation of the ceiling 42 of the raised floor 40 is calculated. The worst data at a certain position can be used as the flatness of the ceiling 42. The data must be within the standard value to be considered acceptable. For example, the standard value error is ±2 / 10 mm. If it exceeds ±2 / 10 mm, it is considered unacceptable.

[0052] These four zero-point positioning blocks 528 are respectively located at the four corners of the detection surface S2 of the sensor mounting plate 522. For ease of explanation, the zero-point positioning blocks 528 at different positions are referred to as the first zero-point positioning block SP1, the second zero-point positioning block SP2, the third zero-point positioning block SP3, and the fourth zero-point positioning block SP4. The first zero-point positioning block SP1, the second zero-point positioning block SP2, the third zero-point positioning block SP3, and the fourth zero-point positioning block SP4 are located at the four corners of these probes 526, so that the size range formed by the first zero-point positioning block SP1, the second zero-point positioning block SP2, the third zero-point positioning block SP3, the fourth zero-point positioning block SP4, and these probes 526 can cover the ceiling 42 of the raised floor 40 as shown in Figure 2.

[0053] In addition, the detection surface S2 of the sensor mounting plate 522 can be provided with four fixing parts B1. These four fixing parts B1 are, for example, through holes for locking elements, which can connect the connecting posts 5132 as shown in Figure 1 or Figure 3 together.

[0054] Figure 7 is a perspective view of the positioning device and the lifting device of the raised floor according to the present disclosure. Figure 8 is a top view of the positioning device and the lifting device of the raised floor according to the present disclosure. Figure 9 is a side view of the positioning device and the lifting device of the raised floor according to the present disclosure. Referring to Figures 2, 3, 7 to 9, the conveying device 51 is used to convey the raised floor 40 to the measuring station LA2 along the conveying direction LA, and the positioning device 53 is used to position the side plate 44 of the raised floor 40 so that the position of the top plate 42 can be positioned on the measuring device 52, so that the position of the top plate 42 corresponds to the position of the detection surface S2 of the sensor mounting plate 522.

[0055] The positioning device 53 disclosed herein is located at measurement station LA2. Positioning device 53 includes a first positioning element T1, a second positioning element T2, a third positioning element T31, a fourth positioning element T32, a fifth positioning element T4, a first push cylinder T11, and a second push cylinder T21. The first positioning element T1, the first push cylinder T11, the second positioning element T2, and the second push cylinder T21 are arranged along the conveying direction LA. The first push cylinder T11 is connected to the first positioning element T1, and the second push cylinder T21 is connected to the second positioning element T2. At least one positioning element is arranged on each side of the conveying direction LA. Taking Figure 3 as an example, two positioning elements, the third positioning element T31 and the fourth positioning element T32, are arranged on the left side of the conveying direction LA, and one positioning element, the fifth positioning element T4, is arranged on the right side of the conveying direction LA. This fifth positioning element T4 also functions as a push cylinder, capable of pushing the raised floor 40 towards the third positioning element T31 and the fourth positioning element T32 for positioning.

[0056] The first positioning element T1, the second positioning element T2, the first push cylinder T11, and the second push cylinder T21 are all located between the two chain assemblies 5144 in the conveying structure 514. The third positioning element T31 and the fourth positioning element T32 are located on one side of the two chain assemblies 5144 in the conveying structure 514, while the fifth positioning element T4 is located on the other side of the two chain assemblies 5144 in the conveying structure 514. That is, the third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4 are located on opposite sides of the first positioning element T1 and the second positioning element T2.

[0057] Along the conveying direction LA, the second positioning element T2 and its connected second push cylinder T21 are adjacent to the waiting station LA1, and the first positioning element T1 and its connected first push cylinder T11 are adjacent to the output station LA3. That is to say, when the raised floor 40 is conveyed to the measuring station LA2 by the chain assembly 5144, the raised floor 40 will first be conveyed by the second positioning element T2 and its connected second push cylinder T21, and then by the first positioning element T1 and its connected first push cylinder T11. During the process of the raised floor 40 being conveyed from the second positioning element T2 to the first positioning element T1, the third positioning element T31, the fourth positioning element T32 and the fifth positioning element T4 are located on both sides of the raised floor 40, and the measuring device 52 is located above the top plate 42 of the raised floor 40.

[0058] Please refer to Figures 3, 7, and 9. The third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4 are positioned at a higher height than the chain assembly 5144. This ensures that when the conveyed object (such as the raised floor 40 in Figure 2) passes through, the third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4 on both sides of the chain assembly 5144 can be positioned on the left and right sides of the conveyed object (such as the raised floor 40 in Figure 2).

[0059] The height of the first push cylinder T11 and the second positioning element T2 is not higher than the height of the chain assembly 5144, so that the bottom side of the conveyed object (such as the raised floor 40 in Figure 2) will not hit the first push cylinder T11 and the second positioning element T2 when passing through. However, the first positioning element T1 is driven by the first push cylinder T11 and the second push cylinder T21 is driven by the second positioning element T2, so that the first positioning element T1 and the second positioning element T2 can protrude from the height of the chain assembly 5144. This allows the first positioning element T1 and the second push cylinder T21 to be located in front of and behind the conveyed object (such as the raised floor 40 in Figure 2) to position the raised floor 40. Alternatively, the first positioning element T1 and the second push cylinder T21 can not protrude from the height of the chain assembly 5144, allowing the conveyed object (such as the raised floor 40 in Figure 2) to pass through the measuring station LA2.

[0060] Specifically, the first positioning element T1 includes a positioning plate 532, a rack 533, and a circular gear 534. As shown in Figure 9, one end of the rack 533 is connected to the first push cylinder T11, and the other end of the rack 533 is connected to the circular gear 534. The circular gear 534 is connected to the positioning plate 532. With this structure, the first push cylinder T11 pushes the rack 533, causing the rack 533 to drive the circular gear 534 to rotate, thereby positioning the positioning plate 532 at the positioning position shown in Figure 9 or retracting it. The positioning plate 532, as shown by the dashed line in Figure 9, is positioned at a height higher than the chain assembly 5144 in the positioning position shown in Figure 3. It is used to contact one side of the conveyed object (such as the raised floor 40 in Figure 2) and block the raised floor 40 from moving forward for positioning purposes. Conversely, if the positioning plate 532 is as shown by the dashed line in Figure 9, its height is not higher than the chain assembly 5144.

[0061] As shown in Figure 3, the second push cylinder T21 is positioned no higher than the chain assembly 5144. In one embodiment, as shown in Figure 9, driven by the second positioning element T2, the second push cylinder T21 can move up and down in a lifting direction LB, allowing it to be positioned beyond the origin shown in Figure 3. Alternatively, the second push cylinder T21 can protrude beyond the chain assembly 5144, making its height higher than the chain assembly 5144. In one embodiment, the second push cylinder T21 includes two contact members 538, which, when positioned higher than the chain assembly 5144, can contact the other side of the conveyed object (such as the raised floor 40 in Figure 2) for positioning.

[0062] The third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4 are located on both sides of the two chain assemblies 5144 in the conveying structure 514. Taking the third positioning element T31 as an example, the third positioning element T31 includes a push cylinder 535 and a circular roller 536. The push cylinder 535 is connected to the circular roller 536. The fourth positioning element T32 and the fifth positioning element T4 have the same structure as the third positioning element T31, and also include a push cylinder 535 and a circular roller 536. In this structure, the push cylinder 535 pushes the circular roller 536, so that the circular roller 536 can move in the direction of the chain assembly 5144. The circular roller 536 is used to contact the left and right sides of the conveyed object (such as the raised floor 40 in Figure 2) for positioning.

[0063] In addition, as shown in Figure 1, besides the measuring station LA2, in one embodiment, the positioning mechanism is provided at the output station LA3, which can be used for positioning when the transported object (such as the raised floor 40 in Figure 2) is moved out. The structure of the positioning element 56 can be the same as that of the aforementioned third positioning element T31.

[0064] Please refer again to Figures 3 and 7 through 9. The raised floor lifting device 54 disclosed herein is located at the measurement station LA2 and is used to lift the raised floor 40 as shown in Figure 2. The raised floor lifting device 54 includes four lifting mechanisms 100 and a drive motor GM. The lifting mechanisms 100 are used to support and lift the rear side 46 of the raised floor 40 as shown in Figure 2. The support seat 57 is located above the support frame 513, and the drive motor GM is fixed to the support seat 57. The drive motor GM is used to drive the four lifting mechanisms 100 to move synchronously along the lifting direction LB, so as to move the raised floor 40 as shown in Figure 2 along the lifting direction LB, so as to move the raised floor 40 away from the chain assembly 5144 as shown in Figure 1 and closer to the measurement device 52. Since the four lifting mechanisms 100 are respectively supported at the four corners of the raised floor 40, they can be lifted and lowered smoothly. In other embodiments, each of the four lifting mechanisms 100 may have its own drive mechanism, which can simultaneously lift the four lifting mechanisms 100 to a predetermined position by setting the torque.

[0065] Figure 10 is a perspective view of an embodiment of the raised floor lifting device according to the present disclosure. Referring to Figure 10, the raised floor lifting device 54 disclosed includes four lifting mechanisms 100, a drive motor GM, a belt 542, two first support plates 544 and two second support plates 545. The two ends of the two first support plates 544 are respectively connected to the two second support plates 545. The two first support plates 544 and the two second support plates 545 are connected to form a square frame, which moves synchronously upward and downward in a linear motion with four screws G13, so that the screws G13 in the four lifting mechanisms 100 can synchronously drive the contact blocks D12 of the raised floor lifting device 54 to contact the four corners of the raised floor synchronously. The positions of the four lifting mechanisms 100 can correspond to the positions of the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 in the measuring device 52 as shown in Figure 5. The four lifting mechanisms 100 will move the raised floor 40 synchronously along the lifting direction LB and contact the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4.

[0066] The drive motor GM is located between two of the lifting mechanisms 100. A belt 542 is wound around the drive pulleys 151 of the four lifting mechanisms 100 and the drive motor GM to form a synchronous drive mechanism. The contact blocks D12 of the four lifting mechanisms 100 correspond to the positions of the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 in the measuring device 52 shown in Figure 5.

[0067] In this way, the drive motor GM can drive the belt 542 to rotate, and the belt 542 can drive the transmission pulleys 151 of the four lifting mechanisms 100, so that the contact blocks D12 of the four lifting mechanisms 100 can perform lifting actions. Since the four lifting mechanisms 100 are driven by the same drive source (drive motor GM) and transmission structure (belt 542) to perform lifting actions synchronously, the contact blocks D12 can be raised or lowered to a predetermined position, thus avoiding the generation of position differences in the upward movement of the four lifting mechanisms 100.

[0068] In one embodiment, the lifting mechanism 100 may include two independent lifting modes: a fast lifting module G1, G2, G3, G4 and a slow lifting module D1, D2, D3, D4. In addition to synchronously executing the lifting actions of these four lifting mechanisms 100 as described above, the fast lifting modules G1, G2, G3, G4 can simultaneously and rapidly raise the height of these four lifting mechanisms 100. Furthermore, the slow lifting modules D1, D2, D3, D4 can supplement the fast lifting modules G1, G2, G3, G4 to enhance the fit against the four corners of the raised floor 40.

[0069] Figure 11 is a schematic diagram of an embodiment of the raised floor lifting device according to the present disclosure in the raised position. It illustrates, for example, that the raised floor lifting device 54 is in the raised position P1 to raise the height of the raised floor 40. The raised position P1 includes the raised position P11 of the fast lifting modules G1, G2, G3, and G4, and the raised position P12 of the slow lifting modules D1, D2, D3, and D4. Figure 12 is a schematic diagram of an embodiment of the raised floor lifting device according to the present disclosure in the origin position. It illustrates, for example, the origin position P2 of the raised floor 40 before it is lifted by the raised floor lifting device 54. The origin position P2 includes the origin position P21 of the fast lifting modules G1, G2, G3, and G4, and the origin position P22 of the slow lifting modules D1, D2, D3, and D4.

[0070] Please refer to Figures 11 and 12. Each slow lifting module D1, D2, D3, D4 disclosed herein is connected to and positioned above the corresponding fast lifting modules G1, G2, G3, G4 of the lifting mechanism 100. The fast lifting module G1 includes a T-nut connector G11, a connecting flange G12, and a screw G13. One end of each of the four screws G13 is fixed to both ends of the first support plate 544. In this way, the aforementioned belt 542 drives the transmission wheel 151 to rotate, so as to synchronously drive the transmission wheel connector 152 inside the transmission wheel 151 and its connected T-nut 153 (as shown in Figure 15A) to rotate. At this time, since the first support plate 544 and the second support plate 545 at the bottom of the four screws G13 are fixed, the screws G13 cannot be rotated. The transmission wheel 151 synchronously drives the transmission wheel connector 152 and its connected T-nut 153 to rotate. The T-nut 153 can drive the screws G13 to move up and down in a linear motion, as shown in the lifting position P11 in Figure 11, so as to drive the slow lifting modules D1, D2, D3, D4 and their connected contact block D12 to lift their height position, thereby raising the height position of the raised floor 40. Through the transmission wheel 151 synchronously driving the transmission wheel connector 152 and its connected T-nut 153 to rotate, the T-nut 153 drives the screws G13 to move up and down in a linear motion, quickly driving the screws G13 to rise in a linear motion, that is, converting the rotational motion of the T-nut 153 into the linear motion of the screws G13, so as to quickly achieve the purpose of the rising position. In conjunction with the aforementioned method, a single power source (drive motor GM) simultaneously drives these four lifting mechanisms 100 to rapidly and synchronously raise the raised floor 40 to a predetermined height. This avoids positional differences caused by the different rising positions of the four lifting mechanisms 100, thereby ensuring that all four corners of the raised floor 40 can be smoothly raised by these four lifting mechanisms 100, avoiding height differences at the four corners of the raised floor 40, and preventing the raised floor 40 from slipping during the lifting process.

[0071] Conversely, as shown in Figure 12, the aforementioned transmission wheel 151 can be used to synchronously drive the transmission wheel connector 152 and its connected T-nut 153 to rotate in the opposite direction, so that the protruding end 142 of the screw G13 and its pivotally connected flange G12 are reset to the origin position P21 as shown in Figure 12, thereby driving the slow lifting modules D1, D2, D3, D4 and their connected contact block D12 to reset to their height position.

[0072] In addition to the aforementioned rapid lifting modules G1, G2, G3, and G4, please refer to Figures 11 and 12. The slow lifting modules D1, D2, D3, and D4 disclosed herein include a contact block D12 and a cylinder power source D11. The cylinder power source D11 is connected to the contact block D12, and a gasket 111 is fixed to the contact block D12. The other end of the cylinder power source D11 is connected to the rapid lifting modules G1, G2, G3, and G4. The function of the slow lifting modules D1, D2, D3, and D4 disclosed herein is to compensate for the shortcomings of the fast lifting modules G1, G2, G3, and G4. Due to gaps between components, thickness tolerances during machining of the four corners of the raised floor 40, and various factors including but not limited to measuring tools, the four corner surfaces of the raised floor 40 cannot fully conform to the positions of the first zero-point positioning block SP1, the second zero-point positioning block SP2, the third zero-point positioning block SP3, and the fourth zero-point positioning block SP4 in the measuring device 52. Utilizing the controllability of the air pressure of the cylinder power source D11, the cylinder power source D11 drives the contact block D12 to move, thereby adjusting the height position of the raised floor 40.

[0073] Because the cylinder output can be adjusted according to the weight of the raised floor 40, and by utilizing air pressure regulation control and the limited infinite position function of the cylinder, the raised floor 40 can be lifted with the most appropriate force so that the four corner surfaces of the raised floor 40 are completely in contact with the positions of the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 in the measuring device 52, thereby achieving the effectiveness and accuracy of the flatness measurement value.

[0074] To ensure that the probe 526 of the measuring device 52 returns to its original position, a zero-calibration operation is performed on the probe 526 before measuring the flatness of the raised floor. The following example illustrates the zero-calibration operation for the automatic flatness measurement of the raised floor disclosed herein: First, a high-precision gauge block is selected, with dimensions, for example... In one embodiment, the high-precision gauge block has the same structure and dimensions as the raised floor 40 shown in Figure 2. The high-precision gauge block is placed in the waiting station LA1 shown in Figure 1, and moved to the measuring station LA2 by the chain assembly 5144 in the conveying device 51, so that the high-precision gauge block is located below the measuring device 52.

[0075] Next, when the front side of the high-precision gauge block touches the positioning plate 532 in the first positioning element T1 as shown in Figure 3, the chain assembly 5144 stops conveying the high-precision gauge block. Then, the third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4 located on both sides of the chain assembly 5144 begin to operate. The circular rollers 536 of the third and fourth positioning elements T31 and T32 extend and move towards the high-precision gauge block to position its left side. The circular roller 536 of the fifth positioning element T4 extends and moves towards the right side of the high-precision gauge block (i.e., towards the third and fourth positioning elements T31 and T32) to push the high-precision gauge block towards the third and fourth positioning elements T31 and T32, allowing it to come into close contact with them. In other words, the left and right sides of the high-precision gauge block are positioned by the third, fourth, and fifth positioning elements T31 and T32. Finally, the second positioning element T2 drives the second push cylinder T21 to move, causing the second push cylinder T21 to protrude from the setting position of the chain assembly 5144 and move towards the high-precision gauge block, that is, towards the first positioning element T1. The high-precision gauge block is contacted by the contact member 538 of the second push cylinder T21, so that the high-precision gauge block can be pushed towards and close to the positioning plate 532 in the first positioning element T1. In this way, the high-precision gauge block is positioned by the first positioning element T1, the second push cylinder T21, the third positioning element T31, the fourth positioning element T32 and the fifth positioning element T4 in the positioning device 53, so as to complete the positioning of the high-precision gauge block.

[0076] Next, as shown in Figure 9, the first push cylinder T11 pushes the rack 533, causing the rack 533 to drive the circular gear 534 to rotate, thereby rotating the positioning plate 532 from the positioning position shown in Figure 9 back to the retracted position (as indicated by the dotted line in Figure 9). On the other hand, the second positioning element T2 retracts the second push cylinder T21 to the original position, that is, the setting height of the second positioning element T2 is not higher than the setting height of the chain assembly 5144. In addition, the third positioning element T31, the fourth positioning element T32 and the fifth positioning element T4 located on both sides of the chain assembly 5144 begin to operate, retracting to the original position to move away from the high-precision gauge block, thereby completing the reset action of all positioning devices 53.

[0077] Next, as shown in Figure 10, the drive motor GM is actuated, which drives the belt 542 to rotate. The belt 542 drives the transmission wheel 151 of each lifting mechanism 100, so that the rapid lifting modules G1, G2, G3 and G4 in each lifting mechanism 100 can synchronously and rapidly raise the height of the four lifting mechanisms 100, so that the high-precision gauge block can be lifted to a predetermined height by the four lifting mechanisms 100.

[0078] After the high-precision gauge block is lifted to a predetermined height by the rapid lifting modules G1, G2, G3, and G4, it is then lifted by the slow lifting modules D1, D2, D3, and D4 to bring the upper surface of the high-precision gauge block into contact with the positions of the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 in the measuring device 52. At this time, the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 are located at the four corners of these probes 526. Therefore, when the upper surface of the high-precision gauge block contacts the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3 and the fourth plate zero-point positioning block SP4 in the measuring device 52, the probe 526 in the measuring device 52 will also touch the upper surface of the high-precision gauge block.

[0079] Finally, after confirming that all probes 526 have touched the upper surface of the high-precision gauge block, the data obtained by these probes 526 is received by the corresponding sensors 524. These sensors 524 can receive this data and display it through a back-end control platform (such as a BCS display), and reset all the data obtained by the probes 526 to zero, so as to complete the zeroing correction action of the automatic measurement of the flatness of the raised floor.

[0080] Subsequently, the slow lifting modules D1, D2, D3, D4 and the fast lifting modules G1, G2, G3, G4 are reset, so that the high-precision gauge block is once again located in the two chain assemblies 5144 in the conveying structure 514. Then, the high-precision gauge block is transported from the measurement station LA2 to the output station LA3 through the chain assembly 5144. Then, the first push cylinder T11 pushes the rack 533, so that the rack 533 drives the circular gear 534 to rotate, so as to rotate the positioning plate 532 from the retracted position shown in Figure 9 back to the positioning position (as shown by the solid line in Figure 9), so as to receive the next calibration work.

[0081] After the aforementioned zeroing correction action of the automatic flatness measurement of the raised floor, the position data of the probes 526 in the measuring device 52 is zero, which serves as the reference for the flatness of the raised floor's top plate. The following example illustrates the automatic flatness measurement action of the raised floor surface disclosed herein: First, the raised floor 40 as shown in Figure 2 is placed in the waiting station LA1 as shown in Figure 1. The chain assembly 5144 in the conveying device 51 moves the raised floor 40 to the measuring station LA2, so that the raised floor 40 is located below the measuring device 52, and the top plate 42 faces the detection surface S2 of the measuring device 52. The probes 526 face the top plate 42 used to contact the raised floor 40 as shown in Figure 2.

[0082] Next, when the front side of the raised floor 40 touches the positioning plate 532 in the first positioning element T1 as shown in Figure 3, the chain assembly 5144 stops conveying the raised floor 40. Next, the third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4 located on both sides of the chain assembly 5144 begin to operate. The circular rollers 536 of the third positioning element T31 and the fourth positioning element T32 can extend and move towards both sides of the raised floor 40 to position the left side of the raised floor 40. The circular rollers 536 of the fifth positioning element T4 can extend and move towards the right side of the raised floor 40 (i.e., towards the third positioning element T31 and the fourth positioning element T32) to push the raised floor 40 towards the third positioning element T31 and the fourth positioning element T32, so that the raised floor 40 can be close to the third positioning element T31 and the fourth positioning element T32. That is, the left and right sides of the raised floor 40 are positioned by the third positioning element T31, the fourth positioning element T32, and the fifth positioning element T4. Finally, the second positioning element T2 drives the second push cylinder T21 to move, causing the second push cylinder T21 to protrude from the setting position of the chain assembly 5144 and move towards the raised floor 40, that is, towards the first positioning element T1. The contact member 538 of the second push cylinder T21 contacts the raised floor 40, so that the raised floor 40 can be pushed towards and close to the positioning plate 532 in the first positioning element T1. In this way, the raised floor 40 is positioned by the first positioning element T1, the second push cylinder T21, the third positioning element T31, the fourth positioning element T32 and the fifth positioning element T4 in the positioning device 53, so as to complete the positioning of the raised floor 40.

[0083] Next, as shown in Figure 9, the first push cylinder T11 pushes the rack 533, causing the rack 533 to drive the circular gear 534 to rotate, thereby rotating the positioning plate 532 from the positioning position shown in Figure 9 back to the retracted position (as indicated by the dotted line in Figure 9). On the other hand, the second positioning element T2 retracts the second push cylinder T21 to the original position, that is, the setting height of the second positioning element T2 is not higher than the setting height of the chain assembly 5144. In addition, the third positioning element T31, the fourth positioning element T32 and the fifth positioning element T4 located on both sides of the chain assembly 5144 begin to operate, retracting to the original position to move away from the raised floor 40, thereby completing the reset action of all positioning devices 53.

[0084] Next, as shown in Figures 10 and 11, the drive motor GM is actuated, which drives the belt 542 to rotate. The belt 542 drives the transmission wheel 151 of each lifting mechanism 100, so that the rapid lifting modules G1, G2, G3, and G4 in each lifting mechanism 100 can synchronously and rapidly raise the height of the four lifting mechanisms 100, so that the raised floor 40 can be lifted to a predetermined height by the four lifting mechanisms 100.

[0085] After the raised floor 40 is lifted to a predetermined height by the rapid lifting modules G1, G2, G3, and G4, the slow lifting modules D1, D2, D3, and D4 then lift the top plate 42 of the raised floor 40 to contact the positions of the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 in the measuring device 52. At this time, the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3, and the fourth plate zero-point positioning block SP4 are located at the four corners of these probes 526. Therefore, when the top plate 42 of the raised floor 40 contacts the first plate zero-point positioning block SP1, the second plate zero-point positioning block SP2, the third plate zero-point positioning block SP3 and the fourth plate zero-point positioning block SP4 in the measuring device 52, the probe 526 in the measuring device 52 will also touch the top plate 42 of the raised floor 40.

[0086] Finally, the data obtained through these probes 526 is received by the corresponding sensors 524. These sensors 524 can receive this data and display it through a back-end control platform (such as a BCS display) to complete the automatic measurement of the flatness of the raised floor surface, calculate the flatness deviation of the roof 42 of the entire raised floor 40, and the worst data obtained at a certain location can be used as the flatness of that roof 42.

[0087] Subsequently, the slow lifting modules D1, D2, D3, D4 and the fast lifting modules G1, G2, G3, G4 are reset, so that the raised floor 40 is once again located in the two chain assemblies 5144 in the conveying structure 514. Then, the raised floor 40 is transported from the measurement station LA2 to the output station LA3 through the chain assembly 5144. Then, the first push cylinder T11 pushes the rack 533, so that the rack 533 drives the circular gear 534 to rotate, so as to rotate the positioning plate 532 from the retracted position shown in Figure 9 back to the positioning position (as shown by the solid line in Figure 9), so as to receive the next measurement work.

[0088] Figure 13A is a schematic diagram of an embodiment of the lifting mechanism according to the present disclosure in the raised position. Figure 13B is a schematic diagram of an embodiment of the lifting mechanism according to the present disclosure in the origin position. Figure 14A is an exploded view of corresponding components in a cross-sectional schematic diagram of the lifting mechanism according to the present disclosure. Figure 14B is an exploded view of the lower connecting flange and screw according to the present disclosure. Figure 15A is a cross-sectional schematic diagram of an embodiment of the lifting mechanism according to the present disclosure in the raised position. Figure 15B is a cross-sectional schematic diagram of an embodiment of the lifting mechanism according to the present disclosure in the origin position. Please refer to Figures 13A to 15B. The lifting position P1 of the lifting mechanism 100 in Figures 13A and 15A corresponds to the lifting mechanism 100 in Figure 11. The lifting position P1 includes the lifting position P11 of the fast lifting modules G1, G2, G3, and G4 and the lifting position P12 of the slow lifting modules D1, D2, D3, and D4. The origin position P2 of Figures 13B and 15B corresponds to the lifting mechanism 100 in Figure 12. The origin position P2 includes the origin position P21 of the fast lifting modules G1, G2, G3, and G4 and the origin position P22 of the slow lifting modules D1, D2, D3, and D4.

[0089] The lifting mechanism 100 includes a fast lifting module G1, a slow lifting module D1, and a T-shaped connector E1. The lifting mechanism 100 includes two independent lifting modes: a fast lifting module G1 and slow lifting modules D1, D2, D3, and D4. The fast lifting modules G1, G2, G3, and G4 can quickly lift to a predetermined height. The slow lifting modules D1, D2, D3, and D4 are fixed above the fast lifting modules G1, G2, G3, and G4, and lift synchronously with them. The fast lifting module G1 includes a T-shaped nut connector G11, a connecting flange G12, and a screw G13. The slow lifting module D1 includes a cylinder power source D11, a contact block D12, and a T-shaped connector E1.

[0090] The T-nut connector G11 includes a drive wheel 151, a drive wheel connector 152, a T-nut 153, a bearing housing 154, at least one bearing 155, a nut 156, a retainer 157, a C-ring 158, and two deep groove bearings 159. The number of bearings 155 can be adjusted according to the structural configuration.

[0091] A drive wheel connector 152 is provided inside the drive wheel 151. One side of the T-nut 153 is connected to the drive wheel connector 152. The T-nut 153 can be fixed together with the drive wheel 151 and rotate synchronously through the drive wheel connector 152.

[0092] In one embodiment, a T-nut 153 is placed inside the bearing housing 154. The T-nut 153 is an elongated through-hole with an external thread at its upper end. The lower end of the T-nut 153 is connected and fixed to the drive wheel 151 to rotate as a whole. For example, when assembling the T-nut connector G11, the shaft of the drive wheel connector 152 is first fitted into the central hole of the drive wheel 151, and the shaft of the T-nut 153 is fitted upwards into the central hole of the bearing housing 154. Then, at least one fixing screw SC is sequentially inserted into the through hole H1 of the drive wheel 151, the through hole H2 of the drive wheel connector 152, and the through hole H3 of the T-nut 153 to lock the drive wheel 151, the drive wheel connector 152, and the T-nut 153 into a whole, thereby connecting and fixing the drive wheel 151 and the T-nut 153 into a whole.

[0093] The bearing 155 is housed inside the bearing housing 154. The bearing 155 is located between the T-nut 153 and the bearing housing 154. The nut 156 is locked onto the external thread of the upper end of the T-nut 153, thereby fixing the position of the bearing 155.

[0094] A C-ring clip 158, two deep groove bearings 159, and a retainer 157 are inserted around the outer periphery of the T-nut 153. A deep groove bearing 159 is positioned at each of the upper and lower ends of the retainer 157, thus securing the positions of the two deep groove bearings 159. The C-ring clip 158, also known as a circlip or retainer, is an elastic fastener used to secure parts or bearings within a shaft or hole. It typically has a C-shaped or nearly circular structure with openings at both ends. After installation, its elastic force firmly fixes the parts in a predetermined position. In this embodiment, the C-ring clip 158 is located between a deep groove bearing 159 and a bearing 155 to reinforce and secure the position of the bearing 155.

[0095] It should be noted that the Deep Groove Ball Bearing 159 is a type of rolling bearing, characterized by deep, circular grooves in the raceways of its inner and outer rings, which can withstand radial loads and a certain amount of axial loads.

[0096] The connecting flange G12 includes an upper connecting flange 162 connected to a lower connecting flange 161, with the upper connecting flange 162 positioned above the lower connecting flange 161. In one embodiment, bolts (not shown) are used to pass through the through hole H4 to lock the upper connecting flange 162 and the lower connecting flange 161 together.

[0097] The upper end of the screw G13 is fixed to the lower connecting flange 161. The lower end of the screw G13 is sequentially inserted through a nut 156, a T-nut 153, a bearing 155, a drive wheel connector 152, and a drive wheel 151. A first bolt 145 and a bolt head 146 are provided above the T-nut connector G11. In one embodiment, the screw G13 includes an extended end 142. The upper end of the screw G13 is connected and fixed to the lower end of one of the first bolts 145. The upper end of the first bolt 145 is a bolt head 146. The first bolt 145 passes through a countersink hole 161A of the lower connecting flange 161 and is locked in the screw hole at the upper end of the screw G13 to fix the screw G13 and the lower connecting flange 161 into one unit. The bolt head 146 is fixedly connected to the countersink hole 161A of the lower connecting flange 161. Therefore, the first bolt 145 is fixed to the lower connecting flange 161 by the bolt head 146 at the upper end of the first bolt 145, and the protruding end 142 of the screw G13 is fixed to the lower connecting flange 161 by the first bolt 145. The first bolt 145 and its bolt head 146 are integrally formed into a bolt. Other fasteners can also be used to replace the first bolt 145 and its bolt head 146. This disclosure uses a first bolt 145 for fixing.

[0098] In one embodiment, as shown in Figure 14B, a countersunk hole 161A is provided within the lower connecting flange 161. A first bolt 145 passes through and is located in the countersunk hole 161A. The countersunk hole 161A is a hole machined into the material surface, characterized by a tapered enlargement at the opening to accommodate the head of a countersunk screw (such as the first bolt 145), allowing the head of the first bolt 145 to be flush with or slightly below the surface of the lower connecting flange 161. The design of the countersunk hole 161A is mainly for aesthetics and functionality, such as preventing the head of the first bolt 145 from protruding and affecting the flatness or aesthetics of the lower connecting flange 161, thereby ensuring that the lower connecting flange 161 with a flat upper surface can be connected and fixed together with the upper connecting flange 162.

[0099] The screw G13 is sequentially threaded through the nut 156, the T-nut 153, and the drive wheel connector 152 on the drive wheel 151. The aforementioned T-nut connector G11, connecting flange G12, and screw G13 constitute a fast lifting module G1. The slow lifting module D1 includes a cylinder power source D11 and a contact block D12, with the contact block D12 connected to the cylinder power source D11.

[0100] One end of the T-connector E1 is connected to the upper connecting flange 162, and the other end of the T-connector E1 is provided with a fixed base 148. The upper connecting flange 162 and the fixed base 148 at both ends of the T-connector E1 are respectively connected to and fixed the fast lifting module G1 and the slow lifting module D1. That is, one end of the T-connector E1 is connected and fixed to the fast lifting module G1 through the upper connecting flange 162, and the other end of the T-connector E1 is connected and fixed to the slow lifting module D1 through the fixed base 148.

[0101] One end of the T-shaped connector E1 is provided with a fixed base 148, and the other end of the T-shaped connector E1 is connected to an upper connecting flange 162. A second bolt 143 is connected to the fixed base 148. The upper end of the T-shaped connector E1 is a fixed base 148. The lower end of the T-shaped connector E1 is an upper connecting flange 162. One upper end of the T-shaped connector E1 is connected and fixed to the bottom of the cylinder power source D11 by the second bolt 143 and the fixed base 148. The second bolt 143 is fixed in the same way as the first bolt 145 mentioned above. That is, the fixed base 148 of the T-shaped connector E1 is provided with a second bolt 143, which is inserted into the bottom of the cylinder power source D11 and locked into the screw hole of the fixed base 148 to connect and fix the cylinder power source D11 to the fixed base 148. Therefore, the bottom of the cylinder power source D11 is connected and fixed to the fixed base 148 at the upper end of the T-shaped connector E1 by the second bolt 143, so that the connecting flanges 162 and the fixed base 148 at both ends of the T-shaped connector E1 are respectively connected and fixed to the fast lifting module G1 and the slow lifting module D1. Other fasteners can also be used instead of the second bolt 143, but this disclosure uses the second bolt 143 for fixing.

[0102] When the drive transmission wheel 151 rotates, it synchronously drives the transmission wheel connector 152 inside the transmission wheel 151 and the T-nut 153 connected to it to rotate. The T-nut 153 is fixed inside the transmission wheel 151. When the T-nut 153 rotates, the screw hole 149 at the bottom of the screw G13 is fixed to both ends of the support plate 544 (as shown in Figures 10 to 12) using a screw (not shown). This makes the bottom end of the screw G13 a fixed end, preventing the screw G13 from rotating. The T-nut 153 can drive the screw G13 to make up-down linear motion. The up-down linear motion (or vertical motion) of the screw G13 refers to the movement of the screw G13 along a straight line in the vertical direction. The direction of movement of the screw G13 is up and down, and the movement is along a straight line, as shown in Figure 13A or Figure 15A, at the lifting position P11, so as to drive the slow lifting module D1 and its connected contact block D12 to raise its height position. The transmission wheel 151 drives the transmission wheel connector 152 and its connected T-nut 153 to rotate, thereby quickly driving the screw G13 to rise linearly, that is, converting the rotational motion into linear motion, so as to quickly reach the rising position.

[0103] Conversely, as shown in Figure 13B or Figure 15B, the aforementioned transmission wheel 151 and transmission wheel connector 152 can be rotated in the opposite direction to the T-nut 153 connected to them, so that the protruding end 142 of the screw G13 and its pivotally connected flange G12 are reset to the origin position P21 shown in Figure 13B or Figure 15B, thereby driving the slow lifting module D1 and its connected contact block D12 to reset or lower back to their height position.

[0104] The cylinder power source D11 includes a cylinder body 132, a piston 134, at least one through hole 135, at least one intake and exhaust port 136, and multiple fixed rods 137. The piston 134 can move within the cylinder body 132. The piston 134 includes a protruding end 134A and a top 134B. The protruding end 134A is connected to the top 134B, and the top 134B is fixed to the bottom of the contact block D12, so that the cylinder power source D11 slowly raises and lowers the corresponding contact block D12 to adjust the height of the contact block D12. One end of the fixed rod 137 passes through the cylinder body 132, and the other end of the fixed rod 137 is connected to the top 134B, so that the piston 134 can evenly and balancedly lift the contact block D12 on the multiple fixed rods 137 to make slow up and down movements, and can move in conjunction with the fixed rods 137 to the contact block D12.

[0105] In one embodiment, the cylinder body 132 is fixed to the bottom of the cylinder body 132 by a bolt (not shown) passing through a through hole 135, and at least one intake and exhaust hole 136 is provided on the cylinder body 132.

[0106] The aforementioned cylinder power source D11, contact block D12, and T-shaped connector E1 constitute a slow-speed lifting module D1. Utilizing the controllability of the air pressure of the cylinder power source D11, the cylinder power source D11 drives the contact block D12 to move, and the piston 134 can move within the cylinder body 132. This allows the protruding end 134A of the piston 134 and its connected top 134B to drive the contact block D12 to slide on the fixed rod 137, thereby changing its height position to rise to the lifting position P12 as shown in Figure 13A or Figure 15A. Alternatively, the protruding end 134A of the piston 134 can drive the contact block D12 to change its height position to reset or descend to the origin position P22 as shown in Figure 13B or Figure 15B.

[0107] In one embodiment, the lifting mechanism 100 includes a gasket 111 disposed on the contact block D12. The contact block D12 is secured to the gasket 111 by a bolt (not shown) passing through a through hole 111A.

[0108] Therefore, the lifting mechanism 100 can include two independent lifting modes: a fast lifting module G1 and a slow lifting module D1. The function of the slow lifting module D1 disclosed herein is to supplement the fast lifting module G1. It can accommodate the gaps caused by the assembly of components or the tolerances caused by measuring tools. Since the cylinder output can be adjusted according to the weight of the object being lifted, and by utilizing air pressure regulation control and the limited unlimited position function of the cylinder, the object being lifted can be lifted with the most appropriate force, so that the object being lifted can be completely pressed against the surface of another object.

[0109] In summary, this invention discloses a method for measuring the flatness of raised floors during transmission, which improves measurement accuracy, reduces and avoids errors or structural problems after assembly, and improves overall engineering efficiency.

[0110] Furthermore, the number of probes and sensors disclosed herein can be adjusted according to the actual size or requirements of the roof of the raised floor being measured, so as to improve the accuracy of the flatness measurement.

[0111] In addition, this disclosure uses a zero-point positioning block on the panel to fix and confirm the position of the measuring device and the four corners of the raised floor ceiling, so as to ensure the relative position of the probe and the ceiling.

[0112] In addition, this disclosure describes the use of a positioning device to position the raised floor around its perimeter during transmission, thereby ensuring the relative position of the raised floor and the measuring device and thus ensuring the accuracy of subsequent measurements.

[0113] Furthermore, this disclosure utilizes the lifting device of the raised floor to form a synchronous drive mechanism with the four lifting mechanisms installed thereon, so that the lifting action is performed synchronously, allowing the raised floor to be raised or lowered to a predetermined position, thus avoiding the generation of positional differences in the upward movement of the four lifting mechanisms.

[0114] Furthermore, the lifting mechanism disclosed herein has two independent fast lifting modules and slow lifting modules. In addition to being able to quickly raise the predetermined height through its fast lifting module, it can also compensate for fitting errors through air pressure regulation of the slow lifting module.

[0115] Although this disclosure has been disclosed above with reference to embodiments, it is not intended to limit this disclosure. Anyone skilled in the art may make some modifications and refinements without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this disclosure shall be determined by the appended claims.

[0116] 40: Raised Floor 42:Top plate 44: Side panel 46: Back side 50: Equipment for measuring the flatness of raised floors 51: Conveying device 511: First Frame 512: Second Frame 513: Support frame 5132: Connecting Post 5134: Crossbar 514: Conveying Structure 5142: Main Body 5144: Chain assembly 5146A: First gear assembly 5146B: Second gear assembly 5148: Drive motor 52: Measuring device 522: Sensor mounting plate 524: Sensor 526: Probe 528: Zero-point positioning block for the board surface 53: Positioning device 532: Positioning plate 533: rack and pinion 534: Circular Gear 536: Round roller 535: Push cylinder 54: Lifting device for raised floor 542: Belt 544: First support plate 545: Second support plate 55: Limiting device 56: Positioning element 57: Support seat 100: Lifting mechanism 111: Gasket 111A: Perforation 132: Cylinder body 134: Piston 134A: Protruding end 134B: Top 135: Perforation 136: Intake and exhaust ports 137: Fixed rod 142: Protruding end 143: Second Bolt 145: First bolt 146: Bolt head 148: Fixed base 149: Screw hole 151: Transmission wheel 152: Transmission wheel connector 153: T-nut 154: Bearing housing 155: Bearing 156: Nut 157: Cage 158: C-type retaining ring 159: Deep Groove Bearing 161: Lower connecting flange 161A: Countersunk hole 162: Upper connecting flange B1: Fixing part D1, D2, D3, D4: Slow Lift Module D11: Cylinder Power Source D12: Contact Block E1: T-type connector G1, G2, G3, G4: Rapid Lifting Module GM: Drive motor G11: T-type nut connector G12: Connecting flange G13: Screw H1, H2, H3, H4: Perforation LA: Conveying direction LB: Lifting / Locking Direction LA1: Material Waiting Station LA2: Measurement Station LA3: Output Station P1, P11, P12: Lifting Position P2, P21, P22: Origin position S1: Reception Section S2: Detection Surface SC: Fixed screw SP1: Zero-point positioning block for the first plate SP2: Zero-point positioning block for the second plate SP3: Zero-point positioning block for the third plate SP4: Zero-point positioning block for the fourth plate T1: First positioning element T11: First push cylinder T2: Second positioning element T21: Second push cylinder T31: Third positioning element T32: Fourth Positioning Element T4: Fifth Positioning Element

Claims

1. A planarity measuring device for a raised floor, suitable for transmitting and measuring the flatness of a top panel of a raised floor, wherein multiple side panels of the raised floor are respectively vertically connected to the perimeter of the top panel, and the planarity measuring device for the raised floor comprises: A conveying device includes a waiting station, a measuring station, and an output station along a conveying direction, wherein the measuring station is located between the waiting station and the output station, and the conveying device is used to convey the raised floor along the conveying direction. A measuring device, located at the measuring station, includes a sensor mounting plate, multiple sensors, multiple probes, and four plate zero-point positioning blocks. The sensor mounting plate includes a receiving portion and a detection surface. The sensors are respectively disposed at different positions in the receiving portion. The positions of the probes correspond to the positions of the sensors, and the probes are connected to the corresponding sensors. One end of each probe protrudes from the detection surface of the sensor mounting plate, and the probes are arranged in an array. The four plate zero-point positioning blocks are disposed at the four corners of the detection surface of the sensor mounting plate. A positioning device, located at the measuring station, is used when the conveying device conveys the raised floor to the measuring station along the conveying direction. The top plate of the raised floor is located below the sensor mounting plate. The positioning device is used to position the side plates of the raised floor so that the position of the top plate corresponds to the position of the detection surface of the sensor mounting plate. A lifting device for an elevated floor is located at the measurement station. The lifting device for the elevated floor includes four lifting mechanisms and at least one drive motor. The four lifting mechanisms are respectively used to support the four corners of the elevated floor, and the positions of the four lifting mechanisms correspond to the positions of the four zero-point positioning blocks of the plate in the measurement device. The at least one drive motor drives the four lifting mechanisms to move synchronously along a lifting direction, so as to move the elevated floor along the lifting direction and contact the four zero-point positioning blocks of the plate.

2. The planar measurement device for raised floor as claimed in claim 1, wherein five probes are respectively arranged around the perimeter, and a first row, a second row and a third row of probes are arranged within the probes located around the perimeter, the first row and the third row each have six probes arranged in two rows, the second row has five probes arranged in two rows, and the probes face the ceiling.

3. The planar measurement device for raised floor as claimed in claim 1, wherein the positioning device includes a first positioning element, a second positioning element, a third positioning element, a fourth positioning element, a fifth positioning element, a first push cylinder, and a second push cylinder, the first positioning element, the first push cylinder, the second positioning element, and the second push cylinder are arranged along the conveying direction, the first push cylinder is connected to the first positioning element, the second push cylinder is connected to the second positioning element, the third positioning element, the fourth positioning element, and the fifth positioning element are arranged on both sides of the conveying direction, and the first positioning element includes a positioning plate, a rack, and a circular gear. One end of the rack is connected to the first push cylinder, and the other end of the rack is connected to the circular gear, which is connected to the positioning plate. The conveying device includes a conveying structure with a conveying direction. The conveying structure is a chain transmission drive structure, which includes two chain assemblies. The measuring device is disposed on the two chain assemblies. The first positioning element, the second positioning element, the first push cylinder, and the second push cylinder are respectively located between the two chain assemblies. Driven by the second positioning element, the second push cylinder can move up and down in a lifting direction, so that the second push cylinder can protrude from the setting position of the two chain assemblies.

4. The planar measurement device for raised floor as described in claim 3, wherein the conveying structure further includes a main body, a first gear assembly and a second gear assembly, and a drive motor. The first gear assembly and the second gear assembly are respectively disposed at both ends of the main body, and the chain assembly is respectively connected to the first gear assembly and the second gear assembly. The drive motor is connected to the second gear assembly. When the drive motor drives the second gear assembly, the second gear assembly drives the chain assembly to rotate. Through the rotation of the chain assembly, the first gear assembly is driven to rotate, so that the first gear assembly and the second gear assembly can rotate synchronously, and the chain assembly can move along the conveying direction.

5. The planar measurement device for raised floors as described in claim 4, wherein the conveying device includes a first frame, a second frame, a support frame, and a conveying structure, the first frame and the second frame being respectively disposed below the conveying structure, the support frame being located between the first frame and the second frame, the first frame being located at the waiting station in the conveying structure, the second frame being located at the output station in the conveying structure, the support frame being located at the measuring station in the conveying structure, the measuring device, the positioning device, and the lifting device of the raised floor being respectively disposed between the first frame and the second frame, and the measuring device, the positioning device, and the lifting device of the raised floor being respectively disposed above the support frame; wherein the planar measurement device for raised floors further includes two limiting devices, respectively disposed on both sides of the conveying structure.

6. The planar measurement device for raised floor as claimed in claim 1, wherein the lifting device of the raised floor includes a belt, two first support plates and two second support plates, the two ends of the first support plates are respectively connected to the second support plates to form a square frame, the four lifting mechanisms include a fast lifting module and a slow lifting module, each fast lifting module includes a screw and a drive wheel, each slow lifting module includes a contact block, the lower ends of the screws of the four lifting mechanisms are respectively fixed to the two ends of the first support plates, the belt is wound around the corresponding drive wheel and the drive motor of the four lifting mechanisms to form a synchronous drive mechanism, and the four contact blocks respectively correspond to the positions of the four zero-point positioning blocks of the board surface.

7. The planarity measuring device for raised floor as described in claim 6, wherein each of the slow lifting modules is fixed above the corresponding fast lifting module, and each of the slow lifting modules and the corresponding fast lifting module are raised and lowered synchronously.

8. The planar measurement device for raised floor as claimed in claim 7, wherein each of the quick-lift modules includes a T-nut connector and a connecting flange, the T-nut connector including a T-nut, at least one bearing, a nut, a drive wheel connector, and the drive wheel, the T-nut being fixed together with and rotating synchronously with the drive wheel via the drive wheel connector, the connecting flange including an upper connecting flange and a lower connecting flange, the upper connecting flange connecting the lower connecting flange, one upper end of the screw being fixed to the lower connecting flange, and the lower end of the screw being sequentially inserted through the nut, the T-nut, the at least one bearing, the drive wheel connector, and the drive wheel.

9. The planar measurement device for raised floor as described in claim 8, wherein each of the four lifting mechanisms includes a T-shaped connector, each of the slow lifting modules includes a cylinder power source, each cylinder power source includes a cylinder body and a piston, each piston is movable within the corresponding cylinder body, each contact block is fixed to the top of one of the corresponding pistons, such that the cylinder power source slowly lifts and lowers the contact block to adjust the height of the contact block, one end of each T-shaped connector is connected to the upper connecting flange, the other end of the T-shaped connector is provided with a fixed base, and the upper connecting flanges at both ends of the T-shaped connector and the fixed base are respectively connected and fixed to the fast lifting module and the slow lifting module.

10. The planarity measuring device for an elevated floor as claimed in claim 9, wherein the cylinder power source includes at least one inlet and exhaust port and a plurality of fixing rods, the at least one inlet and exhaust port is provided on the cylinder body, the piston includes a protruding end connected to the top, one end of each of the fixing rods passes through the cylinder body, and the other end of each of the fixing rods is connected to the top, such that the piston and the fixing rods can be linked to the contact block.

11. The planar measurement device for raised floor as claimed in claim 8, wherein the T-nut connector includes a bearing housing, the bearing housing is internally housed in the bearing housing, the bearing is located between the T-nut and the bearing housing, the nut is locked to the upper end of the T-nut to fix the position of the bearing, and the drive wheel connector is fixed inside the drive wheel, the drive wheel drives the drive wheel connector and the T-nut connected to it to rotate, and the T-nut, by rotation, can drive the screw to make up-down linear motion.

12. The planar measurement device for raised floor as claimed in claim 11, wherein the T-nut connector includes a retainer, a C-ring, and two deep groove bearings, the C-ring, the two deep groove bearings, and the retainer are respectively disposed on the outer periphery of the T-nut, and one deep groove bearing is respectively disposed at the upper and lower ends of the retainer, thereby fixing the position of the two deep groove bearings by the retainer, and the C-ring is located between one of the deep groove bearings to fix the position of the bearing.

13. The planar measurement device for raised floor as described in claim 9, wherein the upper end of the screw is connected and fixed to the lower end of a first bolt, the upper end of the first bolt is a bolt head, the first bolt passes through a countersunk hole of the lower connecting flange and is locked in a screw hole at the upper end of the screw, so as to fix the screw and the lower connecting flange as a whole, and the bolt head is fixedly connected to the countersunk hole of the lower connecting flange; a fixing base for the T-shaped connector is provided with a second bolt passing through the bottom of the cylinder power source and locked in a screw hole of the fixing base, so as to connect and fix the cylinder power source to the fixing base.

14. The planarity measuring device for raised floor as claimed in claim 8, wherein the drive wheel and the T-nut are fixed together by means of at least one fixing screw sequentially passing through a corresponding through hole of the drive wheel, the drive wheel connector and the T-nut.