LIFTING MECHANISM AND LIFTING DEVICE OF A RAISED FLOOR

Abstract

A lifting mechanism comprising a fast-lifting module, a slow-lifting module, and a T-connector. The fast-lifting module includes a T-screw cap connector, a connecting flange, and a worm gear. The connecting flange comprises an upper connecting flange and a lower connecting flange. The upper end of the worm gear is attached to the lower connecting flange, with the lower end of the worm gear successively passing through the nut, the T-screw cap, the bearing, the gear-wheel connector, and the gear, and the T-screw cap being attached to the gear by means of the gear-wheel connector and being able to rotate synchronously with it. The slow-lifting module comprises a cylinder drive source and a contact block. The contact block is attached to the top of the piston in the cylinder drive source.The upper connecting flange and the mounting base at both ends of the T-connector are each connected to the quick-lift module and the slow-lift module for securing them. A lifting device for a raised floor is also provided.

Description

[0001] This application claims the benefits of the Taiwanese application with application number 114101417, which was filed on 14 January 2025, and the disclosures of which are fully incorporated by reference into the present application.

[0002] The present disclosure relates to a lifting mechanism and a lifting device, in particular a lifting mechanism and a lifting device for an elevated floor.

[0003] Raised floors are a flooring system widely used in semiconductor factories, offices, machine rooms, and other industrial settings. They essentially consist of a supporting frame and a number of height-adjustable floor panels. These panels are raised above the floor to create space for wires, cables, pipes, and other equipment, and can also improve air circulation and heat dissipation.

[0004] DE 10 2010 023 595 B4 discloses a container with a height-adjustable bottom, several spindles, a spindle nut for each spindle and a drive with a drive train for the common rotation of the spindles, wherein the spindle nuts move the container bottom translationally while adjusting its height.

[0005] In addition, DE 100 08 908 A1 discloses a device for compensating for radial thread spindle runout of a spindle drive in order to prevent the spindle drive from locking up when moving a platform, wherein the platform is supported on several axis-parallel spindles by means of several bearing means arranged on it and is axially movable along the spindles together with the bearing means.

[0006] The lifting of the raised floor can be used as a measurement, processing, or related action, and the positional difference caused by different positions of the lifting operations of the raised floor leads to an unstable lifting of the raised floor and possibly to a height difference of four corners of the raised floor, possibly causing a phenomenon of the raised floor slipping during the lifting process.

[0007] Furthermore, conventional lifting mechanisms only offer the function of raising and lowering, and there is no consideration for the adjustment or tolerance of the measuring device and no function for fine-tuning the raising and lowering, so it cannot be guaranteed that an adapted object will fully adapt to or fit against an object to be adapted.

[0008] Therefore, the purpose of the invention is to enable fast and stable lifting operations of an elevated floor as well as the adaptation of the lifting operation to an object.

[0009] This problem is solved by a lifting mechanism according to claim 1 and a lifting device according to claim 7.

[0010] One embodiment of the present disclosure provides a lifting mechanism which, by means of its rapid lifting module, can perform a rapid lifting to a predetermined height and, by means of the air pressure control of its slow lifting module, can compensate for the error of the adjustment.

[0011] An embodiment of the present disclosure further provides a lifting device for a raised floor, wherein the four arranged lifting mechanisms are formed into a synchronous drive mechanism to carry out a lifting and lowering process synchronously, so that the raised floor can be raised or lowered to a predetermined position in order to avoid the occurrence of a positional deviation in the lifting process of the four lifting mechanisms.

[0012] An embodiment of the present disclosure provides a lifting mechanism comprising a rapid lifting module, a slow lifting module, and a T-connector. The slow lifting module is mounted above the rapid lifting module. The rapid lifting module can be rapidly raised to a predetermined height, with the slow lifting module being raised and lowered synchronously with the rapid lifting module. The rapid lifting module comprises a T-screw cap connector, a connecting flange, and a worm gear. The T-screw cap connector comprises a T-screw cap, at least one bearing, a nut, a gear-gear connector, and a gear, wherein the T-screw cap is attached to the gear by means of the gear-gear connector and can rotate synchronously with it. The connecting flange comprises an upper connecting flange and a lower connecting flange, wherein the upper connecting flange is connected to the lower connecting flange.An upper end of the worm gear is attached to the lower connecting flange, with a lower end of the worm gear passing successively through the nut, the T-bolt cap, the at least one bearing, the gear-wheel connecting piece, and the gear wheel. The slow-lift module comprises a cylinder drive source and a contact block. The cylinder drive source comprises a cylinder body and a piston, the piston being able to move within the cylinder body. The contact block is attached to a top surface of the piston, such that the cylinder drive source slowly raises and lowers the contact block to adjust its height.One end of the T-connector is connected to the upper connecting flange, the other end of the T-connector being provided with a mounting base, and the upper connecting flange and the mounting base at both ends of the T-connector being connected to the quick-lift module and the slow-lift module, respectively, to secure them.

[0013] In one embodiment, the cylinder drive source comprises at least one inlet and outlet hole and a plurality of fastening rods, wherein the at least one inlet and outlet hole is provided on the cylinder body, and wherein the piston comprises a projecting end that is connected to the top, and wherein one end of each fastening rod passes through the cylinder body, and wherein the other end of each fastening rod is connected to the top, so that the piston and the fastening rods can be connected to the contact block.

[0014] In one embodiment, the T-screw cap connector comprises a bearing seat body in which the bearing is received, wherein the bearing is located between the T-screw cap and the bearing seat body, wherein the nut is locked at the upper end of the T-screw cap to position the bearing, wherein the gear wheel connector is attached inside the gear wheel, and wherein the gear wheel drives the gear wheel connector and the T-screw cap connected thereto to rotate, and wherein the T-screw cap, by means of the rotation, can drive the worm to a linear up and down motion.

[0015] In one embodiment, the T-screw cap connector comprises a retaining frame, a C-ring clamp, and two grooved bearings, wherein the C-ring clamp, the two grooved bearings, and the retaining frame each pass through the outer circumference of the T-screw cap, and wherein the upper and lower ends of the retaining frame are each provided with one of the grooved bearings to position the two grooved bearings through the retaining frame, and wherein the C-ring clamp is located between one of the grooved bearings and the bearing to position the bearing.

[0016] In one embodiment, the upper end of the worm is connected and fastened to a lower end of a first bolt, wherein an upper end of the first bolt is a bolt head, and wherein the first bolt passes through a countersunk hole of the lower connecting flange and locks in a screw hole at the upper end of the worm to integrally fasten the worm to the lower connecting flange, and wherein the bolt head is firmly connected to the interior of the countersunk hole of the lower connecting flange; and wherein a mounting base of the T-connector is passed through the interior of the bottom of the cylinder drive source by means of a second bolt and locked in a screw hole of the mounting base to connect and fasten the cylinder drive source to the mounting base.

[0017] In one embodiment, the gear wheel is attached to the T-screw cap in one piece by passing the at least one fastening worm successively through a corresponding through-hole in the gear wheel, the gear wheel connecting piece and the T-screw cap.

[0018] Another embodiment of the present disclosure provides a lifting device for raising and lowering a raised floor, wherein the lifting device comprises: four lifting mechanisms, two first support plates and two second support plates, a belt, and a drive motor. The four lifting mechanisms are each used to support four corners of the raised floor, each of the four lifting mechanisms comprising a fast-lifting module and a slow-lifting module, each fast-lifting module comprising a worm gear and a gear wheel. Two ends of each of the first support plates are connected to the second support plates, with the lower end of the worm gear of each of the four lifting mechanisms being attached to two ends of the first support plates.The belt is wound around the corresponding gear wheels and drive motors of the four lifting mechanisms to form a synchronous drive mechanism, with the drive motor driving the four lifting mechanisms to move along a lifting elevation in order to move the raised floor along the lifting elevation.

[0019] In one embodiment, each slow lifting module is mounted above the corresponding fast lifting module, with each slow lifting module being raised and lowered synchronously with the corresponding fast lifting module.

[0020] In one embodiment, the quick-lifting module comprises a T-screw cap connector and a connecting flange, wherein the T-screw cap connector comprises a T-screw cap, at least one bearing, a nut, and a gear wheel connector, and wherein the T-screw cap can be attached to the gear wheel by means of the gear wheel connector and can rotate synchronously with it, and wherein the connecting flange comprises an upper connecting flange and a lower connecting flange, and wherein the upper connecting flange is connected to the lower connecting flange, and wherein an upper end of the worm gear is attached to the lower connecting flange, and wherein a lower end of the worm gear is successively passed through the nut, the T-screw cap, the at least one bearing, the gear wheel connector, and the gear wheel.

[0021] In one embodiment, the slow-lifting module comprises a cylinder drive source and a contact block, each cylinder drive source comprising a cylinder body and a piston, each piston being able to move within the cylinder body, and the contact block being attached to the top of a piston so that the cylinder drive source slowly raises and lowers the contact block to adjust the height of the contact block, and two ends of the T-connector being connected and secured to the bottom of the upper connecting flange and the cylinder body, respectively.

[0022] In one embodiment, the cylinder drive source comprises at least one inlet and outlet hole and a plurality of fastening rods, wherein the at least one inlet and outlet hole is provided on the cylinder body, and wherein the piston comprises a projecting end that is connected to the top, and wherein one end of each fastening rod passes through the cylinder body, and wherein the other end of each fastening rod is connected to the top, so that the piston and the fastening rods can be connected to the contact block.

[0023] In one embodiment, the T-screw cap connector comprises a bearing seat body in which the bearing is received, wherein the bearing is located between the T-screw cap and the bearing seat body, wherein the nut is locked at the upper end of the T-screw cap to position the bearing, wherein the gear wheel connector is attached inside the gear wheel, and wherein the gear wheel drives the gear wheel connector and the T-screw cap connected thereto to rotate, and wherein the T-screw cap, by means of the rotation, can drive the worm to a linear up and down motion.

[0024] In one embodiment, the T-screw cap connector comprises a retaining frame, a C-ring clamp, and two grooved bearings, wherein the C-ring clamp, the two grooved bearings, and the retaining frame each pass through the outer circumference of the T-screw cap, and wherein the upper and lower ends of the retaining frame are each provided with one of the grooved bearings to position the two grooved bearings through the retaining frame, and wherein the C-ring clamp is located between one of the grooved bearings and the bearing to position the bearing.

[0025] In one embodiment, the upper end of the worm is connected and fastened to a lower end of a first bolt, wherein an upper end of the first bolt is a bolt head, and wherein the first bolt is locked through a countersunk hole of the lower connecting flange and in a screw hole at the upper end of the worm to integrally fasten the worm to the lower connecting flange, and wherein the bolt head is firmly connected to the interior of the countersunk hole of the lower connecting flange; and wherein a mounting base of the T-connector is passed through the interior of the bottom of the cylinder drive source by means of a second bolt and locked in a screw hole of the mounting base to connect and fasten the cylinder drive source to the mounting base.

[0026] In one embodiment, the gear wheel is attached to the T-screw cap in one piece by passing the at least one fastening worm successively through a corresponding through-hole in the gear wheel, the gear wheel connecting piece and the T-screw cap.

[0027] Based on the above content, the lifting mechanism in the present disclosure has a fast lifting module and a slow lifting module that are independent of each other, wherein a rapid lifting to a predetermined height can be carried out by means of the fast lifting module, furthermore the error of the adjustment can be compensated by means of the air pressure control of the slow lifting module.

[0028] Furthermore, in the present disclosure, the four arranged lifting mechanisms are formed by the lifting device of an elevated floor into a synchronous drive mechanism in order to carry out a lifting and lowering operation synchronously, so that the elevated floor can be raised or lowered to a predetermined position in order to avoid the occurrence of a positional deviation in the lifting operation of the four lifting mechanisms.

[0029] To make the present disclosure more obvious and easier to understand, the exemplary embodiments are listed below and explained in more detail in connection with the accompanying drawings. Fig. Figure 1 shows a schematic diagram of an embodiment of a lifting mechanism located at a lifting position according to the present disclosure. Fig. Figure 2 shows a schematic diagram of an embodiment of a lifting mechanism located at a starting position according to the present disclosure. Fig. Figure 3A shows an exploded view of the respective corresponding elements in the sectional view of a lifting mechanism according to the present disclosure. Fig. Figure 3B shows an exploded view of a lower connecting flange and a screw according to the present disclosure. Fig. Figure 4 shows a sectional view of an embodiment of a lifting mechanism located at a lifting position according to the present disclosure. Fig. Figure 5 shows a sectional view of an embodiment of a lifting mechanism located at a starting position according to the present disclosure. Fig. Figure 6 shows a three-dimensional schematic diagram of an embodiment of a lifting device for an elevated floor according to the present disclosure. Fig. Figure 7 shows a schematic diagram of an embodiment of a lifting device located at a lifting position of an elevated floor according to the present disclosure. Fig. Figure 8 shows a schematic diagram of an embodiment of a lifting device located at a starting position of an elevated floor according to the present disclosure.

[0030] In conjunction with the accompanying drawings and embodiments, the detailed embodiments of this disclosure are explained in more detail below. The following embodiments serve to clarify the technical solution of this disclosure; however, the scope of protection of this disclosure is not limited thereto.

[0031] It should be noted that in the description of the various embodiments, the so-called "first" and "second" elements are used to describe different elements, and these elements are not limited by such designations.Furthermore, for the convenience and clarity of description, the thickness or size of each element in the drawings is expressed in an exaggerated, omitted, or approximate manner for the understanding and reading of those familiar with the technology, and the dimensions of each element are not the actual dimensions and are not intended to limit the conditions for the implementation of this disclosure and therefore have no technical significance, and any modification of the structure, change of proportionality, or adjustment of size, without affecting the effectiveness and purpose of this disclosure, still falls within the scope of the technical content of this disclosure.

[0032] The following embodiments are shown and illustrated in detail in the accompanying drawings; however, the embodiments shown should not limit the scope of this disclosure. Furthermore, the accompanying drawings are for illustrative purposes only and are not drawn to their actual size. To facilitate understanding, identical elements in the following description are indicated by the same symbols.

[0033] The terms “including”, “comprehensive”, “include” and the like mentioned in this disclosure are open terms, meaning “comprehensive but not limited to”.

[0034] When the elements in the description of the various embodiments are referred to as "first", "second", "third", "fourth" and the like, they serve only to distinguish these elements from one another and do not restrict the order or meaning of these elements.

[0035] In the description of various embodiments, the so-called "coupling" or "connection" can refer to two or more elements that are in direct physical or electrical contact with each other or in indirect physical or electrical contact with each other, and the "coupling" or "connection" can also refer to two or more elements that are operated or influenced by each other.

[0036] In the description of various embodiments, the term "module" refers to a hardware module, i.e., a physical hardware component. In other embodiments, the term "module" can also refer to a hardware module plus a software module; that is, the "module" includes a software program in addition to the hardware components.

[0037] In the description of various embodiments, a so-called "fast lifting module" is generally defined as a mechanical module designed to perform lifting and lowering operations quickly and efficiently. Such a fast lifting module can perform a lifting and lowering movement in a shorter time than a typical lifting system and is typically used in application scenarios where lifting an object or changing its position must occur quickly.

[0038] In the description of various embodiments, the so-called "slow lifting module" is a mechanical module designed to perform lifting and lowering operations slowly and stably. Such a module is typically used in application scenarios where there are specific requirements for lifting and lowering speeds, particularly when more precise control or protection of an object from impacts is necessary. Compared to the fast lifting module, the slow lifting module has a lower lifting and lowering speed, which helps to improve stability and avoid the possibility of damage to the object or equipment due to excessively rapid movements.

[0039] In the description of various embodiments, the term "T-shape" refers to a structure or form shaped like the letter "T," where the T-shaped structure consists of two parts: a vertical, elongated part (referred to as the main body or beam) and a vertically connected horizontal part (referred to as the crossbar or crossbeam). Such a shape represents a "T" shape, which is commonly used to describe a support frame or a hinged part, as this shape offers greater structural stability.

[0040] In the description of various embodiments, a so-called "drive wheel" is a wheel used to transmit driving force and motion in a mechanical system, and can transmit the driving force to other components through friction, gears or belts, etc., in order to achieve the operation of a mechanical device.

[0041] In the description of various embodiments, a so-called "connecting flange" is a mechanical element used to join two parts together. The connecting flange typically consists of a circular or polygonal metal plate (flange) and is fastened between the two flanges using bolts, screws, welds, etc., to create a structural connection.

[0042] In the description of various embodiments, a so-called "cylinder power source" refers to a device that uses a pneumatic or hydraulic system to move a piston. Cylinders are typically used as energy conversion elements in mechanical systems to convert the energy of a compressed gas or liquid into linear motion.

[0043] Fig. Figure 1 shows a schematic diagram of an embodiment of a lifting mechanism located at a lifting position according to the present disclosure. Fig. Figure 2 shows a schematic diagram of an embodiment of a lifting mechanism located at a starting position according to the present disclosure. Fig. Figure 3A shows an exploded view of the respective corresponding elements in the sectional view of a lifting mechanism according to the present disclosure. Fig. Figure 3B shows an exploded view of a lower connecting flange and a screw according to the present disclosure, with the lower connecting flange still shown in partial section. Fig. Figure 4 shows a sectional view of an embodiment of a lifting mechanism located at a lifting position according to the present disclosure. Fig. Figure 5 shows a sectional view of an embodiment of a lifting mechanism located in a starting position according to the present disclosure. See Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. 5. The lifting mechanism 100 comprises a fast lifting module G1, a slow lifting module D1, and a T-connector E1, wherein the lifting mechanism 100 includes two independent lifting modes, namely a fast lifting module G1 and a slow lifting module D1, wherein the fast lifting module G1 can be raised quickly to a predetermined height, and wherein the slow lifting module D1 is mounted above the fast lifting module G1, and wherein the slow lifting module D1 and the fast lifting module are raised and lowered synchronously. The fast lifting module G1 comprises a T-screw cap connector G11, a connecting flange G12, and a worm gear G13, wherein the slow lifting module D1 comprises a cylinder drive source D11 and a contact block D12.

[0044] The T-screw cap connector G11 comprises a gear wheel 151, a gear wheel connecting piece 152, a T-screw cap 153, a bearing seat body 154, at least one bearing 155, a nut 156, a retaining frame 157, a C-ring clamp 158, and two grooved bearings 159. The number of bearings 155 can be adjusted depending on the structural configuration.

[0045] In the gear wheel 151 a gear wheel connecting piece 152 is arranged, wherein one side of the T-screw cap 153 is connected to the gear wheel connecting piece 152, and wherein the T-screw cap 153 can be fastened to the gear wheel 151 by means of the gear wheel connecting piece 152 and can rotate synchronously with it.

[0046] In one embodiment, the T-screw cap 153 is received in the bearing seat body 154, which is a long through screw hole, wherein the upper end of the T-screw cap 153 has an external thread, and wherein the lower end of the T-screw cap 153 and the gear wheel 151 are connected and fastened together as one piece and rotate.For example, when assembling the T-screw cap connector G11, the shaft section of the gear wheel connecting piece 152 is placed in the center hole of the gear wheel 151, and the shaft section of the T-screw cap 153 is placed upwards in the center hole of the bearing seat body 154. At least one fastening screw SC is successively passed through the through hole H1 of the gear wheel 151, the through hole H2 of the gear wheel connecting piece 152, and the through hole H3 of the T-screw cap 153 to lock the gear wheel 151 with the gear wheel connecting piece 152 and the T-screw cap 153 in one piece, so that the gear wheel 151 and the T-screw cap 153 are connected and fastened together in one piece.

[0047] Inside the bearing seat body 154 is the bearing 155, which is located between the T-screw cap 153 and the bearing seat body 154, with the nut 156 being locked onto outer teeth of the upper end of the T-screw cap 153 to position the bearing 155.

[0048] The C-ring clamp 158, the two grooved bearings 159, and the retaining frame 157 pass through the outer circumference of the T-screw cap 153, with the upper and lower ends of the retaining frame 157 each being provided with a grooved bearing 159 to position the two grooved bearings 159 by means of the retaining frame 157. The C-ring clamp 158, also known as a circlip or snap ring, is an elastic fastener used to secure a part or bearing in a shaft or bore. It typically has a C-shaped or approximately circular structure with openings at two ends and, once installed, can securely fasten the part in a predetermined position by its elastic force. In the present embodiment, the C-ring clamp 158 is located, for example, between a grooved bearing 159 and the bearing 155 to reinforce the bearing 155 and hold it in position.

[0049] It should be noted that the Deep Groove Ball Bearing 159 is a rolling bearing characterized by the fact that its inner and outer raceways have deep circular grooves which are able to withstand radial loads and certain axial loads.

[0050] The connecting flange G12 comprises a lower connecting flange 161 and an upper connecting flange 162 connected to the lower connecting flange 161, the upper connecting flange 162 being arranged above the lower connecting flange 161. In one embodiment, a bolt (not shown) is used which passes through the through-hole H4 to lock the upper connecting flange 162 and the lower connecting flange 161 together as a single unit.

[0051] An upper end of the worm gear G13 is attached to the lower connecting flange 161, with a lower end of the worm gear G13 successively passing through the nut 156, the T-screw cap 153, the bearing 155, the gear wheel connector 152, and the gear wheel 151. A first bolt 145 and a bolt head 146 are arranged above the T-screw cap connector G11.In one embodiment, the worm gear G13 comprises a projecting end 142, wherein the T-connector E1 is arranged above the projecting end 142, and wherein the projecting end 142 is an upper end of the worm gear G13, and wherein the upper end of the worm gear G13 is connected and fastened to a lower end of the first bolt 145, and wherein an upper end of the first bolt 145 is a bolt head 146, and wherein the first bolt 145 passes through a countersink hole 161A of the lower connecting flange 145 and locks in a screw hole at the upper end of the worm gear G13 to integrally fasten the worm gear G13 to the lower connecting flange 161, and wherein the bolt head 146 is firmly connected to the interior of the countersink hole 161A of the lower connecting flange 161.It is evident that the first bolt 145 is fastened to the lower connecting flange 161 by the bolt head 146 at the upper end of the first bolt 145, wherein the protruding end 142 of the worm G13 is fastened to the lower connecting flange 161 by the first bolt 145, and wherein the first bolt 145 and the bolt head 146 are formed as one piece to form a bolt; the first bolt 145 and the bolt head 146 can also be replaced by other fastening elements; in the present disclosure, the fastening is effected by a first bolt 145.

[0052] In one embodiment, as in Fig. As shown in Figure 3B, a countersunk hole 161A is provided in the lower connecting flange 161, wherein the first bolt 145 is passed through the countersunk hole 161A, and wherein the countersunk hole 161A is a hole that is machined into the surface of the material and is characterized in that there is a conical milling recess at the opening to receive the head of the countersunk screw (e.g. of the first bolt 145), so that the head of the first bolt 145 can be flush with the surface of the lower connecting flange 161 or slightly below it. The countersunk hole 161A serves mainly aesthetic and functional purposes to prevent the head of the first bolt 145 from protruding and thus impairing the flatness or aesthetics of the lower connecting flange 161, so that the lower connecting flange 161, which has a flat top, can be connected and fastened to the upper connecting flange 162.

[0053] The worm gear G13 passes successively through the nut 156, the T-screw cap 153, and the gear wheel connector 152 of the gear wheel 151. The T-screw cap connector G11, the connecting flange G12, and the worm gear G13 form a high-speed lifting module G1. The low-speed lifting module D1 comprises a cylinder drive source D11 and a contact block D12, the contact block D12 being connected to the cylinder drive source D11.

[0054] One end of the T-connector E1 is connected to the upper connecting flange 162, the other end of the T-connector E1 being provided with a mounting base 148, and the upper connecting flange 162 and the mounting base 148 being connected at both ends of the T-connector E1 to the quick-lifting module G1 and the slow-lifting module D1 respectively in order to secure them, that is to say, one end of the T-connector E1 is connected and secured to the quick-lifting module G1 by means of the upper connecting flange 162, and the other end of the T-connector E1 is connected and secured to the slow-lifting module D1 by means of the mounting base 148.

[0055] One end of the T-connector E1 is provided with a mounting base 148, the other end of the T-connector E1 being connected to the upper connecting flange 162. The second bolt 143 is connected to the mounting base 148, the other end of the T-connector E1 being a mounting base 148. The lower end of the T-connector E1 is an upper connecting flange 162, with one upper end of the T-connector E1 being connected to and fastened to the base of the cylinder drive source D11 by the second bolt 143 and the mounting base 148. The second bolt 143 is fastened in the same way as the first bolt 145 mentioned above, i.e.,The mounting base 148 of the T-connector E1 is guided through the base of the cylinder drive source D11 by means of the second bolt 143 and locked in the screw hole of the mounting base 148 to connect and fasten the cylinder drive source D11 to the mounting base 148. It follows that, by means of the second bolt 143, the base of the cylinder drive source D11 is connected to and fastened to the mounting base 148 at the upper end of the T-connector E1, so that the upper connecting flange 162 and the mounting base 148 at the two ends of the T-connector E1 are each connected to the fast-lifting module G1 and the slow-lifting module D1, respectively, to secure them. The second bolt 143 can also be replaced by other fastening elements, and in the present disclosure, the fastening is effected by the second bolt 143.

[0056] When the gear wheel 151 is driven to rotate in order to drive the gear wheel connecting piece 152 in the gear wheel 151 and the associated T-screw cap 153 synchronously, the T-screw cap 153 is secured in the gear wheel 151 as it rotates, since the screw hole 149 at the lower end of the worm gear G13 can be secured to both ends of the first support plate 544 by means of a screw element (not shown) (as in Fig. 6, Fig. 7 to Fig. (as shown in Figure 8), the lower end of the screw G13 serves as a fixed end, thus preventing the screw G13 from being rotated. The T-screw cap 153 can drive the screw G13 to a linear up-and-down movement, and the linear up-and-down movement (or vertical movement) of the screw G13 refers to the movement of the screw G13 in the vertical direction along a straight line. The movement of the screw G13 is in the up-and-down direction and is carried out in a straight line, as at a lifting position P11 according to Figure 8. Fig. 1 or Fig. 4, to drive the slow-lifting module D1 and the associated contact block D12 to raise their vertical position. By driving the gear wheel 151 to rotate the gear wheel connecting piece 152 and the associated T-screw cap 153, the worm gear G13 is quickly driven into a linear upward movement; that is, the rotary motion is converted into a linear motion to quickly achieve the purpose of raising the position.

[0057] On the contrary, as in Fig. 2 or Fig. As shown in Figure 5, the gear wheel 151 can drive the gear wheel connecting piece 152 and the associated T-screw cap 153 to rotate in the opposite direction, so that the protruding end 142 of the worm G13 and the pivotably connected connecting flange G12 are positioned on the surface shown in Figure 5. Fig. 2 or Fig. 4. The starting position P21 shown is reset to reset or lower the slow lifting module D1 and the associated contact block D12 to their height positions.

[0058] The cylinder drive source D11 comprises a cylinder body 132, a piston 134, at least one through-hole 135, at least one inlet and outlet hole 136, and a plurality of fastening rods 137, wherein the piston 134 is able to move within the cylinder body 132, and wherein the piston 134 comprises a projecting end 134A and a top 134B, and wherein the projecting end 134A is connected to the top 134B, and wherein the top 134B is connected to and attached to the bottom of the contact block D12, such that the cylinder drive source D11 slowly raises and lowers the corresponding contact block D12 to adjust the height of the contact block D12.One end of the fastening rod 137 passes through the cylinder body 132, with the other end of the fastening rod 137 being connected to the top 134B, so that the piston 134 can be balanced evenly on the plurality of fastening rods 137 to slowly raise and lower the contact block D12, and can engage in the contact block D12 together with the fastening rods 137.

[0059] In one embodiment, the cylinder body 132 is attached to the bottom of the cylinder body 132 by means of a bolt (not shown) passing through the through hole 135, wherein the cylinder body 132 is provided with at least one inlet and outlet hole 136.

[0060] The cylinder drive source D11, the contact block D12, and the T-connector E1 form a slow-lifting module D1. Using the controllability of the air pressure of the cylinder drive source D11, the cylinder drive source D11 drives the contact block D12 to move, allowing the piston 134 to move within the cylinder body 132. This enables the projecting end 134A of the piston 134 and the associated top 134B to drive the contact block D12 to slide along the mounting rod 137, thus changing its height position to the lifting position P12. Fig. 1 or Fig. 4 is raised, or the projecting end 134A of the piston 134 can drive the contact block D12 to change its height position so that it returns to the initial position P22 according to Fig. 2 or Fig. 5 is reset or lowered.

[0061] In one embodiment, the lifting mechanism 100 comprises a washer 111 which is arranged on the contact block D12. The contact block D12 secures the washer 111 to the contact block D12 by means of a bolt (not shown) passing through a through-hole 111A.

[0062] This shows that the lifting mechanism 100 can comprise two independent lifting modes, namely a fast lifting module G1 and a slow lifting module D1. The function of the slow lifting module D1 in this disclosure is to complement the fast lifting module G1 in order to avoid the gap or tolerance created by the combination of assemblies or by the measuring device. Since the cylinder can perform work in accordance with the weight of the object to be lifted and by means of the air pressure control and the limited function of the cylinder without a limit position, the object to be lifted can be lifted with the most suitable force, so that the object to be lifted fully conforms to the surface of another object.

[0063] Fig. Figure 6 shows a three-dimensional schematic diagram of an embodiment of a lifting device for an elevated floor according to the present disclosure. Fig. Figure 7 shows a schematic diagram of an embodiment of a lifting device located at a lifting position of an elevated floor according to the present disclosure. Fig. Figure 8 shows a schematic diagram of an embodiment of a lifting device in a starting position on an elevated floor, according to the present disclosure. See Fig. 6, Fig. 7 to Fig. 8, the quick-lifting modules G1, G2, G3, G4 and the slow-lifting modules D1, D2, D3, D4 according to Fig. 6, Fig. 7 to Fig. 8 the same mechanism setting as the quick-lift module G1 and the slow-lift module D1 according to Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. 5.

[0064] The lifting position P1 of the lifting mechanism 100 according to Fig. 1 and Fig. 4 can be the lifting position P1 of the lifting mechanism 100 according to Fig. 7 correspond, and the lifting position P1 comprises a lifting position P11 of the fast lifting modules G1, G2, G3, G4 and a lifting position P12 of the slow lifting modules D1, D2, D3, D4; the starting position P2 according to Fig. 2 and Fig. 5 can be used with the lifting mechanism 100 according to Fig. 8 correspond, and the starting position P2 includes a starting position P21 of the fast lifting modules G1, G2, G3, G4 and a starting position P22 of the slow lifting modules D1, D2, D3, D4.

[0065] The lifting device of an elevated floor 54 of the present disclosure is used to raise and lower the elevated floor 40. The lifting device of an elevated floor 54 comprises four lifting mechanisms 100 and a drive motor GM, wherein the lifting mechanisms 100 are used to support and raise and lower the elevated floor 40, and wherein the drive motor GM is used to drive the four lifting mechanisms 100 to move along the lifting range LB in order to move the elevated floor 40 along the lifting range LB.

[0066] It should be noted that the raised floor 40 disclosed here has a rectangular shape, with the dimensions of the raised floor 40 disclosed here being, for example, 600 mm×600 mm×60 mm, and the raised floor is made, for example, from a die-cast aluminum alloy.

[0067] Since the four lifting mechanisms 100 are each supported at the four corners of the raised base 40, they can be raised and lowered stably. In other embodiments, the four lifting mechanisms 100 can each have a drive mechanism, and by adjusting the torque, the four lifting mechanisms 100 can be raised simultaneously to a predetermined position.

[0068] In one embodiment, the lifting device of a raised floor 54 of the present disclosure comprises four lifting mechanisms 100, a drive motor GM, a belt 542, and two first support plates 544 and two second support plates 545, wherein two ends of the two first support plates 544 are each connected to the two second support plates 545, and wherein a square frame is formed by connecting the two first support plates 544 to the two second support plates 545, the square frame moves linearly upwards and downwards synchronously with the four screws G13, so that the screws G13 in the four lifting mechanisms 100 can synchronously drive the contact block D12 of the lifting device of a raised floor 54 to come into synchronous contact with the four corners of the raised floor.

[0069] The drive motor GM is mounted between two lifting mechanisms 100. The belt 542 is wound around the gear wheels 151 of the four lifting mechanisms 100 and the drive motor GM to form a synchronous drive mechanism. In this way, the drive motor GM can rotate the belt 542, and the belt 542 can drive the gear wheels 151 of each lifting mechanism 100, enabling the contact block D12 of each lifting mechanism 100 to perform lifting and lowering operations. Because the four lifting mechanisms 100 are driven by the same drive source (drive motor GM) and transmission structure (belt 542) to perform the lifting and lowering operations synchronously, the contact block D12 can be raised or lowered to a predetermined position, thus preventing any positional deviation in the lifting operation of the four lifting mechanisms 100.

[0070] In one embodiment, the lifting mechanism 100 can comprise two independent lifting modes: a rapid lifting module G1, G2, G3, G4 and a slow lifting module D1, D2, D3, D4. In addition to the aforementioned synchronous execution of the lifting and lowering process of the four lifting mechanisms 100, the four lifting mechanisms 100 can be rapidly raised synchronously using the rapid lifting module G1, G2, G3, G4. Furthermore, the rapid lifting modules G1, G2, G3, G4 can be supplemented by the slow lifting modules D1, D2, D3, D4 to enhance the adaptation to the four corners of the raised floor 40.

[0071] With reference to Fig. 6 and Fig. 7 The slow lifting module D1, D2, D3, D4 of each lifting mechanism 100 in the present disclosure is connected to the fast lifting module G1, G2, G3, G4, wherein the fast lifting module G1 comprises a T-screw cap connector G11, a connecting flange G12 and a worm gear G13, and wherein one end of each of the four worm gears G13 is attached to two ends of the first support plate 544, and wherein the belt 542 drives the gear wheel 151 to rotate in order to engage the gear wheel connector 152 within the gear wheel 151 and the T-screw cap 153 associated therewith (as in Fig. (4 shown) to drive synchronously with the rotation. Since at this point the first support plate 544 and the second support plate 545 are fixed ends at the bottom of the four worms G13, the worms G13 cannot be rotated, the gear wheel 151 drives the gear wheel connecting piece 152 and the associated T-screw cap 153 synchronously with the rotation, and the T-screw cap 153 can drive the worms G13 to a linear upward and downward movement, as at a lifting position P11 according to Fig. 6, to drive the slow-lifting modules D1, D2, D3, D4 and the associated contact blocks D12 to increase their height position, so that the raised base 40 also increases its height position. By synchronously driving the gear wheel 151 to rotate the gear wheel connector 152 and the associated T-screw cap 153, the T-screw cap 153 drives the worm gear G13 into a linear up-and-down motion. This is to quickly drive the worm gear G13 into a linear upward motion; that is, the rotary motion of the T-screw cap 153 is converted into a linear motion of the worm gear G13 to quickly achieve the purpose of raising the position.By simultaneously driving the four lifting mechanisms 100 by a single drive source (the drive motor GM), the raised floor 40 is quickly and synchronously raised to a predetermined height. At the same time, it is possible to avoid positional differences arising from different positions of the lifting operations of the four lifting mechanisms 100, ensuring that the four corners of the raised floor 40 can each be raised stably by the four lifting mechanisms 100. This prevents a height difference between the four corner positions of the raised floor 40 and avoids the phenomenon of the raised floor 40 sliding downwards during the lifting operation.

[0072] On the contrary, as in Fig. As shown in Figure 7, the gear wheel 151 can synchronously drive the gear wheel connecting piece 152 and the associated T-screw cap 153 to rotate in the opposite direction, so that the protruding end 142 of the worm G13 and the pivotably connected connecting flange G12 are positioned on the Fig. The starting position P21 shown in Figure 7 is reset to return the slow lifting modules D1, D2, D3, D4 and the associated contact blocks D12 to their height positions.

[0073] In addition to the above-mentioned rapid lifting modules G1, G2, G3, G4, the slow lifting module D1, D2, D3, D4 of this disclosure comprises a cylinder drive source D11, a contact block D12, and a T-connector E1. Two ends of the T-connector E1 are each connected to and attached to the upper connecting flange 162 and the cylinder drive source D11, i.e., they are connected to the rapid lifting module G1 by means of the T-connector E1. The cylinder drive source D11 is connected to the contact block D12, the washer 111 is attached to the contact block D12, and the other end of the cylinder drive source D11 is connected to the rapid lifting modules G1, G2, G3, G4.The function of the slow-lifting modules D1, D2, D3, and D4 of this disclosure is to complement the fast-lifting modules G1, G2, G3, and G4 in order to prevent the gap generated by the combination of assemblies, the thickness tolerance produced when machining four corners of the raised base 40, and the total error generated by a variety of factors, including but not limited to the measuring instrument, from preventing the four corner surfaces of the raised base 40 from fully conforming to an object being fitted. Using the controllability of the air pressure of the cylinder drive source D11, the cylinder drive source D11 drives the contact block D12 to move in order to adjust the height position of the raised base 40.

[0074] Since the cylinder can perform work in accordance with the weight of the raised floor 40 and by means of the air pressure regulator control as well as the limited function of the cylinder without limit position, the raised floor 40 can be lifted with the most suitable force so that the four corner surfaces of the raised floor 40 fully adapt to the position of the object to be adjusted in order to achieve the effectiveness and accuracy of the flatness measurements.

[0075] In summary, the lifting mechanism in the present disclosure comprises a fast lifting module and a slow lifting module, which are independent of each other, wherein a rapid lifting to a predetermined height can be carried out by means of the fast lifting module, furthermore the error of the adjustment can be compensated by means of the air pressure control of the slow lifting module.

[0076] Furthermore, in the present disclosure, the four arranged lifting mechanisms are formed by the lifting device of an elevated floor into a synchronous drive mechanism in order to carry out a lifting and lowering operation synchronously, so that the elevated floor can be raised or lowered to a predetermined position in order to avoid the occurrence of a positional deviation in the lifting operation of the four lifting mechanisms.

[0077] Although some embodiments of the present disclosure are disclosed with the embodiments as above, the present disclosure is not limited thereto. Any person with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure should be defined by the scope of the attached patent application. 40 Elevated floor 42 Ceiling 54 Lifting device for a raised floor 542 belts 544 First support plate 545 Second support plate 100 lifting mechanism 111 Washer 111A Through hole 132 cylinder bodies 134 pistons 134A Foreground End 134B Top 135 Through hole 136 Inlet and outlet holes 137 Mounting rod 142 Outstanding Ending 143 Second bolt 145 First bolt 146 bolt head 148 Mounting base 149 screw holes 151 Gear wheel 152 Gear wheel connecting piece 153 T-screw cap 154 bearing seat bodies 155 warehouses 156 Mother 157 mounting frames 158 C-ring clamp 159 groove bearings 161 Lower connecting flange 161A Sinkhole 162 Upper connecting flange D1, D2, D3, D4 slow lifting module D11 Cylinder drive source D12 contact block E1 T-connector G1, G2, G3, G4 quick lifting module G11 T-screw cap connectors G12 connecting flange G13 snail H1, H2, H3, H4 Through hole SC fastening screw GM drive motor LB Hearing Report P1, P11, P12 Lifting position P2, P21, P22 Starting position

Claims

[1] Lifting mechanism (100), comprising: a quick-lifting module (G1, G2, G3, G4) that can be quickly lifted to a predetermined height and includes the following: a T-screw cap connector (G11) comprising a T-screw cap (153), at least one bearing (155), a nut (156), a gear wheel connector (152) and a gear wheel (151), wherein the T-screw cap (153) can be attached to the gear wheel (151) by means of the gear wheel connector (152) and can rotate synchronously with it; a connecting flange (G12) comprising an upper connecting flange (162) and a lower connecting flange (161), wherein the upper connecting flange (162) is connected to the lower connecting flange (161); and a worm gear (G13), wherein an upper end of the worm gear (G13) is attached to the lower connecting flange (161), and wherein a lower end of the worm gear (G13) is successively passed through the nut (156), the T-screw cap (153), the at least one bearing (155), the gear wheel connecting piece (152) and the gear wheel (151); and a slow lifting module (D1, D2, D3, D4) mounted above the fast lifting module (G1, G2, G3, G4), wherein the slow lifting module (D1, D2, D3, D4) and the fast lifting module (G1, G2, G3, G4) are raised and lowered synchronously, and wherein the slow lifting module (D1, D2, D3, D4) comprises the following: a cylinder drive source (D11) comprising a cylinder body (132) and a piston (134), wherein the piston (134) can move within the cylinder body (132); a contact block (D12) attached to a top (134B) of the piston (134) such that the cylinder drive source (D11) slowly raises and lowers the contact block (D12) to adjust the height of the contact block (D12); and a T-connector (E1) wherein one end of the T-connector (E1) is connected to the upper connecting flange (162), and wherein the other end of the T-connector (E1) is provided with a mounting base (148), and wherein the upper connecting flange (162) and the mounting base (148) are each connected at the two ends of the T-connector (E1) to the quick-lift module (G1, G2, G3, G4) and the slow-lift module (D1, D2, D3, D4) in order to secure them. [2] Lifting mechanism (100) according to claim 1, wherein the cylinder drive source (D11) comprises at least one inlet and outlet hole (136) and a plurality of fastening rods (137), wherein the at least one inlet and outlet hole (136) is provided on the cylinder body (132), and wherein the piston (134) comprises a projecting end (134A) which is connected to the top (134B), and wherein one end of each fastening rod (137) passes through the cylinder body (132), and wherein the other end of each fastening rod (137) is connected to the top (134B), so that the piston (134) and the fastening rods (137) can be connected to the contact block (D12). [3] Lifting mechanism (100) according to claim 1, wherein the T-screw cap connector (G11) comprises a bearing seat body (154) in which the bearing (155) is received, and wherein the bearing (155) is located between the T-screw cap (153) and the bearing seat body (154), and wherein the nut (156) is locked at the upper end of the T-screw cap (153) to position the bearing (155), and wherein the gear wheel connector (152) is fastened inside the gear wheel (151), and wherein the gear wheel (151) drives the gear wheel connector (152) and the T-screw cap (153) connected thereto to rotate, and wherein the T-screw cap (153) can drive the worm (G13) to a linear up and down movement by means of the rotation. [4] Lifting mechanism (100) according to claim 3, wherein the T-screw cap connector (G11) comprises a retaining frame (157), a C-snap ring and two groove bearings (159), wherein the C-snap ring, the two groove bearings (159) and the retaining frame (157) are each passed through the outer circumference of the T-screw cap (153), and wherein the upper and lower ends of the retaining frame (157) are each provided with one of the groove bearings (159) in order to position the two groove bearings (159) through the retaining frame (157), and wherein the C-snap ring is located between one of the groove bearings (159) and the bearing (155) in order to position the bearing (155). [5] Lifting mechanism (100) according to claim 1, wherein the upper end of the screw (G13) is connected and fastened to a lower end of a first bolt (145), wherein an upper end of the first bolt (145) is a bolt head (146), and wherein the first bolt (145) is passed through a countersunk hole (161A) of the lower connecting flange (161) and is locked in a screw hole (149) at the upper end of the screw (G13) to attach the screw (G13) integrally to the lower connecting flange (161), and wherein the bolt head (146) is firmly connected to the interior of the countersunk hole (161A) of the lower connecting flange (161);and wherein a mounting base (148) of the T-connector (E1) is passed through the interior of the base of the cylinder drive source (D11) by means of a second bolt (143) and locked in a screw hole (149) of the mounting base (148) to connect and secure the cylinder drive source (D11) to the mounting base (148). [6] Lifting mechanism (100) according to claim 1, wherein the gear wheel (151) is attached in one piece with the T-screw cap (153) by passing the at least one fastening worm (SC) successively through a corresponding through hole (135) of the gear wheel (151), the gear wheel connecting piece (152) and the T-screw cap (153). [7] Lifting device of a raised floor (54) used for raising and lowering a raised floor (40), the lifting device of a raised floor (54) comprising: four lifting mechanisms (100) each used to support four corners of the raised floor (40), wherein the four lifting mechanisms (100) each comprise a fast lifting module (G1, G2, G3, G4) and a slow lifting module (D1, D2, D3, D4), wherein each fast lifting module (G1, G2, G3, G4) comprises a worm gear (G13) and a gear wheel (151); two first support plates (544) and two second support plates (545), wherein two ends of the first support plates (544) are each connected to the second support plates (545) to form a square frame, and wherein the lower end of the screw (G13) of the four lifting mechanisms (100) is each attached to two ends of the first support plates (544); a belt (542); and a drive motor (GM), wherein the belt (542) is wound around the corresponding gear wheels (151) and drive motors (GM) of the four lifting mechanisms (100) to form a synchronous drive mechanism, and wherein the drive motor (GM) drives the four lifting mechanisms (100) to move along a lifting direction (LB) in order to move the raised floor (40) along the lifting direction (LB). [8] Lifting device of a raised floor (54) according to claim 7, wherein each slow lifting module (D1, D2, D3, D4) is mounted above the corresponding fast lifting module (G1, G2, G3, G4), and wherein each slow lifting module (D1, D2, D3, D4) is raised and lowered synchronously with the corresponding fast lifting module (G1, G2, G3, G4). [9] Lifting device for a raised floor (54) according to claim 8, wherein each quick-lifting module (G1, G2, G3, G4) comprises a T-screw cap connector (G11) and a connecting flange (G12), wherein the T-screw cap connector (G11) comprises a T-screw cap (153), at least one bearing (155), a nut (156) and a gear wheel connecting piece (152), and wherein the T-screw cap (153) can be attached to the gear wheel (151) by means of the gear wheel connecting piece (152) and can rotate synchronously with it, and wherein the connecting flange (G12) comprises an upper connecting flange (162) and a lower connecting flange (161), wherein the upper connecting flange (162) is connected to the lower connecting flange (161), and wherein an upper end of the worm gear (G13) is attached to the lower connecting flange (161), and wherein a lower end of the worm (G13) is successively secured by the nut (156), the T-screw cap, the at least one bearing (155),the gear wheel connecting piece (152) and the gear wheel (151) is passed through it. [10] Lifting device for a raised floor (54) according to claim 9, wherein the four lifting mechanisms (100) each comprise a T-connector (E1), and wherein each slow-lifting module (D1, D2, D3, D4) each comprises a cylinder drive source (D11) and a contact block (D12), wherein each cylinder drive source (D11) each comprises a cylinder body (132) and a piston (134), wherein each piston (134) can move in the corresponding cylinder body (132), and wherein each contact block (D12) is attached to the top (134B) of a corresponding piston (134) such that the cylinder drive source (D11) slowly raises and lowers the corresponding contact block (D12) to adjust the height of each contact block (D12), and wherein two ends of each T-connector (E1) are each connected to the bottom of the upper connecting flange (162) and are connected and fastened to the cylinder body (132). [11] Lifting device of a raised floor (54) according to claim 10, wherein the cylinder drive source (D11) comprises at least one inlet and outlet hole (136) and a plurality of fastening rods (137), and wherein the at least one inlet and outlet hole (136) is provided on the cylinder body (132), and wherein the piston (134) comprises a projecting end (134A) which is connected to the top (134B), and wherein one end of each fastening rod (137) passes through the cylinder body (132), and wherein the other end of the fastening rod (137) is connected to the top (134B) so that the piston (134) and the fastening rod (137) can be connected to the contact block (D12). [12] Lifting device of a raised floor (54) according to claim 9, wherein the T-screw cap connector (G11) comprises a bearing seat body (154) in which the bearing (155) is received, and wherein the bearing (155) is located between the T-screw cap (153) and the bearing seat body (154), and wherein the nut (156) is locked at the upper end of the T-screw cap (153) to position the bearing (155), and wherein the gear wheel connector (152) is fastened inside the gear wheel (151), and wherein the gear wheel (151) drives the gear wheel connector (152) and the T-screw cap (153) connected thereto to rotate, and wherein the T-screw cap (153) can drive the worm (G13) to a linear up and down movement by means of the rotation. [13] Lifting device of a raised floor (54) according to claim 12, wherein the T-screw cap connector (G11) comprises a retaining frame (157), a C-snap ring and two groove bearings (159), wherein the C-snap ring, the two groove bearings (159) and the retaining frame (157) are each passed through the outer circumference of the T-screw cap (153), and wherein the upper and lower ends of the retaining frame (157) are each provided with one of the groove bearings (159) in order to position the two groove bearings (159) through the retaining frame (157), and wherein the C-snap ring is located between one of the groove bearings (159) and the bearing (155) in order to position the bearing (155). [14] Lifting device for a raised floor (54) according to claim 10, wherein the upper end of the screw (G13) is connected and fastened to a lower end of a first bolt (145), wherein an upper end of the first bolt (145) is a bolt head (146), and wherein the first bolt (145) is passed through a countersunk hole (161A) of the lower connecting flange (161) and is locked in a screw hole (149) at the upper end of the screw (G13) to attach the screw (G13) to the lower connecting flange (161) in one piece, and wherein the bolt head (146) is firmly connected to the interior of the countersunk hole (161A) of the lower connecting flange (161);and wherein a mounting base (148) of the T-connector (E1) is passed through the interior of the base of the cylinder drive source (D11) by means of a second bolt (143) and locked in a screw hole (149) of the mounting base (148) to connect and secure the cylinder drive source (D11) to the mounting base (148). [15] Lifting device of a raised floor (54) according to claim 9, wherein the gear wheel (151) is attached in one piece with the T-screw cap (153) by passing the at least one fastening worm (SC) successively through a corresponding through hole (135) of the gear wheel (151), the gear wheel connecting piece (152) and the T-screw cap (153).

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