Platform lifting system

Abstract

The present invention comprises: a platform unit (10) having a plurality of cylinder packs (200), each integrally provided with a hydraulic cylinder (210) that provides a driving force for lifting and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210); and a main panel (300), which has a zone selection switch (312) for selecting each zone, transmits a signal (or command) and a power source for controlling the power pack (220), and provides a user interface for displaying information about the pressure (or load) of each zone and an operation state, wherein an entire zone is divided into at least two zones, and each zone includes the plurality of platform units (10). According to the present invention, each zone including the plurality of platform units (10) can be selectively lifted and lowered, and the plurality of zones can be lifted and lowered at the same time.

Description

Platform lifting system

[0001] The present invention relates to a platform lifting system, and more particularly, to a platform lifting system capable of selectively raising or lowering a platform for each zone including a plurality of platform units, simultaneously raising or lowering a plurality of zones, monitoring and controlling the lifting operation of each zone being raised, and generating an alarm when a risk is predicted by checking the pressure (or load) received in each zone being raised so that a worker can check.

[0002] During construction of building structures at construction sites and elsewhere, platforms (or scaffolding) are installed on the exterior walls of the structure to facilitate smooth work on the structure's exterior walls. These platforms are installed and raised continuously as the number of stories increases. Traditionally, when constructing high-rise structures, elevating platforms were used, hoisted upward by a crane. However, the use of cranes increases the time and cost required for work, hindering the progress of construction.

[0003] Accordingly, the applicant of the present invention has proposed a technology in Republic of Korea Patent No. 10-0704720 (Title: Scaffolding Lifting Device and Scaffolding Lifting Method Using the Same) that enables scaffolding lifting work to be performed without using a crane by means of an lifting mechanism that raises and lowers a profile in stages.

[0004] The above-mentioned registered patent essentially involves a stepwise elevation of a profile by a lifting mechanism engaging with hooks formed at regular intervals along the vertical direction of the profile. Specifically, the lifting mechanism, configured with a hydraulic cylinder and a hook, selectively engages with one of the hooks on the profile as it advances or retreats along the elevation direction. Therefore, the platform can be safely and easily elevated stepwise to a target height.

[0005] However, the repositioning of the scaffolding was primarily accomplished manually, using a hydraulic jack connected to a hydraulic pump. This method lacked precision, made it impossible to control simultaneous or uneven lifting, and could result in a very dangerous situation if the scaffolding were damaged.

[0006] In addition, there is no control and regulation function for pressure (or load) changes in the past, and although an alarm system should be activated when a dangerous situation is predicted, there is no such function.

[0007] The problem to be solved by the present invention is to provide a platform lifting system that can selectively raise or lower a platform for each zone including a plurality of platform units, can raise or lower a plurality of zones simultaneously, can monitor and control the lifting operation of each zone being raised and lowered, and can check the pressure (or load) received in each zone being raised and raise, and generate an alarm when a danger is predicted so that a worker can check it.

[0008] The present invention provides a platform lifting system capable of selectively lifting each zone including a plurality of platform units (10) and simultaneously lifting the plurality of zones, comprising: a platform unit (10) having a plurality of cylinder packs (200) integrally provided with a hydraulic cylinder (210) for providing a driving force for lifting and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210); a main panel (300) having a zone selection switch (312) for selecting each zone and transmitting a signal (or command) and power for controlling the power pack (220) and providing a user interface for displaying information on the pressure (or load) and operating status of each zone; wherein the entire zone is divided into at least two zones, and each zone includes a plurality of platform units (10).

[0009] The platform unit (10) includes an inner profile (100) installed on a side facing the outer wall of a structure (CS) and having a plurality of catches (120) at regular intervals to elevate the platform unit (10), an outer profile (150) provided to partially surround the inner profile (100) and to rise or fall along the inner profile (100), a cylinder pack (200) integrally provided with a hydraulic cylinder (210) that provides a driving force for the elevation of the platform unit (10) and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210), and an elevation operating means (400) that can be caught and connected to the catches (120) and is comprised of a pair of upper and lower hydraulic cylinders (210), and the outer profile (150) is elevated in conjunction with the elevation of the platform unit (10).

[0010] The above platform unit (10) may be provided with a plurality of integral components including the inner profile (100), the outer profile (150), the cylinder pack (200), and the lifting operation means (400).

[0011] The cylinder pack (200) may include a pump (232) for discharging fluid supplied to a hydraulic cylinder (210), a hydraulic motor (231) for operating the pump (232), a plurality of solenoid valves (SS1, SS3) for controlling the flow of fluid by operating when the rod (210a) of the hydraulic cylinder (210) is lowered, a plurality of solenoid valves (SS2, SS4) for controlling the flow of fluid by operating when the rod (210a) of the hydraulic cylinder (210) is raised, a fifth solenoid valve (SS5) for relieving the pressure of the hydraulic cylinder (210), an orifice (233) arranged in parallel with the fifth solenoid valve (SS5), and a fluid storage tank (236) for storing the fluid supplied to the hydraulic cylinder (210) and the fluid discharged from the hydraulic cylinder (210).

[0012] The first solenoid valve (SS1) can operate when the load (210a) of the hydraulic cylinder (210) is lowered to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210), the third solenoid valve (SS3) can operate when the load (210a) of the hydraulic cylinder (210) is lowered to transmit the fluid (return oil) discharged from the hydraulic cylinder (210) to the fluid storage tank (236), the fourth solenoid valve (SS4) can operate when the load (210a) of the hydraulic cylinder (210) is raised to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210), and the second solenoid valve (SS2) can operate when the load (210a) of the hydraulic cylinder (210) is raised to transmit the fluid The fluid discharged from the hydraulic cylinder (210) can be transmitted to the fluid storage tank (236), and the parallel arrangement of the fifth solenoid valve (SS5) and the orifice (233) can be provided between the hydraulic cylinder (210) and the first solenoid valve (SS1), and between the hydraulic cylinder (210) and the second solenoid valve (SS2), and the first to fourth solenoid valves (SS1, SS2, SS3, SS4) can be valves that are set to open when operated and close when not operated, and the fifth solenoid valve (SS5) can be a valve that is set to close when operated and open when not operated.

[0013] The cylinder pack (200) may further include a pressure gauge (235) for measuring the pressure of the fluid discharged from the pump (232), a relief valve (234) provided between the discharge portion of the pump (232) and the fluid storage tank (236) to operate when the pressure of the fluid discharged from the pump (232) exceeds a set maximum allowable pressure value to relieve overpressure, a pressure sensor (237) provided between the pump (232) and the first solenoid valve (SS1) and between the pump (232) and the fourth solenoid valve (SS4), and a check valve (238) provided between the third solenoid valve (SS3) and the fluid storage tank (236) and between the second solenoid valve (SS2) and the fluid storage tank (236).

[0014] The fluid storage tank (236) may be equipped with a heater to control the temperature of the stored fluid, and when the heating switch (330) provided on the main panel (300) is turned on, a signal is sent to the power pack (220) corresponding to the set zone, so that the temperature of the fluid can be controlled through the heater.

[0015] In the case of lowering the load (210a) of the hydraulic cylinder (210), the hydraulic motor (231) is operated to operate the pump (232), the pump (232) discharges fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the first solenoid valve (SS1) and the fifth solenoid valve (SS5), and the fluid (return fluid) discharged from the hydraulic cylinder (210) can be transmitted to the fluid storage tank (236) through the third solenoid valve (SS3).

[0016] In the case of raising the load (210a) of the hydraulic cylinder (210), in order to prevent the impact caused by the hydraulic cylinder (210), the fifth solenoid valve (SS5) is first operated (On) for a preset time so that the fluid discharged from the hydraulic cylinder (210) flows through the orifice (233) (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) do not operate), and thereafter, the fifth solenoid valve (SS5) continues to operate (On) for a preset time so that the hydraulic motor (231) operates, the pump (232) operates, and the pump (232) discharges the fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the fourth solenoid valve (SS4), and the fluid (return oil) discharged from the hydraulic cylinder (210) flows through the orifice (233) and the second solenoid. The fluid is transmitted to the fluid storage tank (236) through the valve (SS2), and while the load (210a) of the hydraulic cylinder (210) is rising in earnest, the fifth solenoid valve (SS5) is turned off (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) are operated), so that the fluid discharged from the hydraulic cylinder (210) can flow to the fluid storage tank (236) through the fifth solenoid valve (SS5) and the second solenoid valve (SS2).

[0017] All power packs (220) of each zone may be connected in series to the main panel (300) via a communication line (240), and power packs (220) of different zones may not be connected via a communication line (240), and all power packs (220) of each zone may be connected in series to the main panel (300) via an electric line (250), and power packs (220) of different zones may not be connected via an electric line (250), and when an abnormal rise or fall of at least one platform unit (10) among the platform units (10) located in each zone is detected, the operation of all cylinder packs (200) of the zone may be stopped.

[0018] The main panel (300) includes a main power switch (310) for turning the main power on / off, a zone selection switch (312) for turning the power on / off for each zone, an operation preparation switch (314) for starting the hydraulic motor (231) of the selected zone, an emergency stop switch (316) for immediately stopping all operations of the platform lifting system in an emergency, a cylinder raising switch (320) for selecting when the load (210a) of the hydraulic cylinder (210) is raised, a cylinder lowering switch (322) for performing a lowering operation of the hydraulic cylinder (210), an operation stop switch (324) for stopping the operation of the hydraulic cylinder (210), a zone current check display window (326) for monitoring the electric load for each zone so that the current of each zone can be checked, and a display window for monitoring the overall operating status of the main panel (300). It may include a main display window (328).

[0019] Additionally, the main panel (300) may further include a heating switch (330) that can apply heat in winter.

[0020] According to the present invention, a platform can be selectively raised or lowered for each zone including a plurality of platform units, and a plurality of zones can be raised or lowered simultaneously, and the raising and lowering operation of each zone can be monitored and controlled, and the pressure (or load) received in each zone can be checked, and if a danger is predicted, an alarm can be generated so that a worker can check it.

[0021] When a hydraulic line comes out of a power pack and is connected to multiple hydraulic cylinders, pressure loss and deviation due to distribution may occur. However, in the present invention, the hydraulic cylinder (210) and the power pack (220) are configured as an integral unit to form a cylinder pack (200). Accordingly, hoses, couplers, etc. are not required, so the cost of replacing hoses and couplers that occur periodically can be reduced. In addition, there is no leakage from the coupler, so no additional maintenance is required.

[0022] In addition, the connection between the cylinder packs (200) is not a hydraulic line connection, but a communication line (240) and an electric line (250), so that there is almost no pressure loss or deviation due to the connection and distribution of multiple cylinder packs (200), the synchronization rate between the cylinder packs (200) is very high, and when a cylinder pack (200) breaks down, a quick lifting operation can be performed by simply replacing the cylinder pack (200) and attaching and detaching the communication line (240) and the electric line (250) without a separate setting.

[0023] In addition, according to the present invention, in order to prevent shock caused by the hydraulic cylinder (210) when the load (210a) of the hydraulic cylinder (210) is to be raised, the fifth solenoid valve (SS5) is first operated (On) for a preset time (for example, about 1 second) so that the fluid discharged from the hydraulic cylinder (210) flows through the orifice (233), and thereafter, while the fifth solenoid valve (SS5) continues to operate (On) for a preset time (for about 5 to 6 seconds after the fifth solenoid valve (SS5) starts to operate), the fluid is transmitted to the fluid storage tank (236) through the orifice (233) and the second solenoid valve (SS2), and while the load (210a) of the hydraulic cylinder (210) is raised in earnest, the fifth solenoid valve (SS5) is turned off so that the fluid discharged from the hydraulic cylinder (210) flows through the orifice (233). Instead of flowing through the orifice (233), it flows through the fifth solenoid valve (SS5) and the second solenoid valve (SS2) to the fluid storage tank (236). By using the parallel arrangement of the fifth solenoid valve (SS5) and the orifice (233) in this way, a differential pressure is generated, thereby minimizing the shock that occurs momentarily when the hydraulic cylinder (210) under load is folded.

[0024] In addition, according to the present invention, if the load is biased and goes beyond the set pressure range depending on the shape of the platform unit (10), the lifting operation can be stopped. Since individual pressure display and individual pressure control are possible for each cylinder pack (200), even if the deviation due to load bias is severe, simultaneous operation with other cylinder packs (200) is possible through individual settings.

[0025] Additionally, according to the present invention, the operating status of the cylinder pack (200) can be displayed through the main display window (328), allowing for confirmation of the progress. In the event of abnormal operation or anomaly, information can be displayed on the main display window (328).

[0026] In addition, according to the present invention, when abnormal operation or an error occurs during operation of the platform lifting system, it can be automatically detected and a lamp for each line at the bottom of the operation and alarm lamp (340) can be turned on.

[0027] In addition, according to the present invention, when abnormal operation or an error occurs during operation of the platform lifting system, it can be automatically detected and an alarm can be generated through a buzzer (338).

[0028] In addition, according to the present invention, when an abnormal operation or abnormality occurs, such as a deviation occurring between hydraulic cylinders (210) or an abnormal pressure occurring in a hydraulic cylinder (210), all operations of the platform lifting system can be immediately stopped, and the operation of the platform lifting system can be forcibly stopped using an emergency stop switch (316), etc.

[0029] Figure 1 is a schematic drawing of a platform lifting system that can selectively or simultaneously lift multiple zones.

[0030] Figure 2 is a drawing showing an example of a platform unit (10).

[0031] Figure 3 is a drawing showing how an anchor (20), a shoe adapter (30), and a suspension shoe (40) are combined.

[0032] Fig. 4 is a drawing showing an example of a shoe adapter (30).

[0033] Figures 5 and 6 are drawings showing an example of a suspension shoe (40).

[0034] Figure 7 is a drawing showing a suspension shoe (40) being coupled to a shoe adapter (30) and an inner profile (100) and an outer profile (150) being installed on the suspension shoe (40).

[0035] Figure 8 is a drawing showing the guide arms (44, 45) of the suspension shoe (40) in an open state.

[0036] Figure 9 is a drawing showing the upper view of the inner profile (100).

[0037] Figure 10 is a drawing showing the appearance of an anchor (20), a shoe adapter (30), a suspension shoe (40), an inner profile (100), and an outer profile (150) combined.

[0038] Fig. 11 is a drawing showing an example of an elevator operation means (400).

[0039] Figures 12 to 14 are drawings illustrating the appearance of the ratchet (450) when the lever (460) of the lifting operation means (400) is raised.

[0040] Figures 15 to 17 are drawings illustrating the appearance of the ratchet (450) when the lever (460) of the lifting operation means (400) is lowered.

[0041] Fig. 18 is a drawing showing an example of an elevating operation means adapter (490).

[0042] Figure 19 is a drawing showing the appearance of the lifting operation means adapter (490), the first lifting operation means (400a), and the outer profile (150) being combined.

[0043] Fig. 20 is a perspective view showing an example of a cylinder pack (200).

[0044] Fig. 21 is a front view showing an example of a cylinder pack (200).

[0045] Fig. 22 is a left side view showing an example of a cylinder pack (200).

[0046] Fig. 23 is a right side view showing an example of a cylinder pack (200).

[0047] Figure 24 is a drawing showing the appearance of the lifting operation means adapter (490), the first lifting operation means (400a), the cylinder pack (200), and the second lifting operation means (400b) combined.

[0048] Figure 25 is a drawing showing the outer profile (150), the lifting operation means adapter (490), the first lifting operation means (400a), and the cylinder pack (200) combined.

[0049] Figure 26 is a drawing showing the outer profile (150), the lifting operation means adapter (490), the first lifting operation means (400a), the cylinder pack (200), and the second lifting operation means (400b) combined.

[0050] Fig. 27 is a drawing showing the arrangement structure of solenoid valves (SS1, SS2, SS3, SS4, SS5) in a cylinder pack (200).

[0051] Fig. 28 is a hydraulic circuit diagram showing the configuration of a power pack (220). Fig. 29 is a perspective view showing an example of a main panel (300).

[0052] Fig. 30 is a front view showing an example of a main panel (300).

[0053] Figure 31 is a left side view showing an example of a main panel (300).

[0054] Figure 32 is a right side view showing an example of a main panel (300).

[0055] Figures 33 to 37 are hydraulic circuit diagrams illustrated to explain the operation of the power pack (220).

[0056] Figure 38 is a drawing illustrating a heating operation, a lowering operation of a hydraulic cylinder (210), and a rising operation of a hydraulic cylinder (210).

[0057] Figures 39 to 48 are drawings illustrating a method of raising and lowering an inner profile (100).

[0058] Figures 49 to 55 are drawings illustrating a method of raising and lowering an outer profile (150).

[0059] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the following embodiments are provided to enable those of ordinary skill in the art to fully understand the present invention, and may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

[0060] When a component is said to "include" another component in the detailed description or claims of an invention, this should not be construed as being limited to that component alone, unless otherwise specifically stated, and should be understood to mean that it may further include other components.

[0061] In addition, the term 'elevation' hereinafter is used to mean both rising and falling. The term 'platform' is used to mean a plurality of platform units (10) to be elevated.

[0062] A platform lifting system according to a preferred embodiment of the present invention is a platform lifting system that can selectively lift each zone including a plurality of platform units (10) and can also lift a plurality of zones simultaneously, and includes a platform unit (10) having a plurality of cylinder packs (200) integrally provided with a hydraulic cylinder (210) that provides a driving force for lifting and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210), and a main panel (300) that is provided with a zone selection switch (312) for selecting each zone and transmits a signal (or command) and power for controlling the power pack (220) and provides a user interface for displaying information on the pressure (or load) and operating status of each zone, and the entire zone is divided into at least two zones, and each zone includes a plurality of platform units (10).

[0063] The platform unit (10) includes an inner profile (100) installed on a side facing the outer wall of a structure (CS) and having a plurality of catches (120) at regular intervals to elevate the platform unit (10), an outer profile (150) provided to partially surround the inner profile (100) and to rise or fall along the inner profile (100), a cylinder pack (200) integrally provided with a hydraulic cylinder (210) that provides a driving force for the elevation of the platform unit (10) and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210), and an elevation operating means (400) that can be caught and connected to the catches (120) and is comprised of a pair of upper and lower hydraulic cylinders (210), and the outer profile (150) is elevated in conjunction with the elevation of the platform unit (10).

[0064] The above platform unit (10) may be provided with a plurality of integral components including the inner profile (100), the outer profile (150), the cylinder pack (200), and the lifting operation means (400).

[0065] The cylinder pack (200) may include a pump (232) for discharging fluid supplied to a hydraulic cylinder (210), a hydraulic motor (231) for operating the pump (232), a plurality of solenoid valves (SS1, SS3) for controlling the flow of fluid by operating when the rod (210a) of the hydraulic cylinder (210) is lowered, a plurality of solenoid valves (SS2, SS4) for controlling the flow of fluid by operating when the rod (210a) of the hydraulic cylinder (210) is raised, a fifth solenoid valve (SS5) for relieving the pressure of the hydraulic cylinder (210), an orifice (233) arranged in parallel with the fifth solenoid valve (SS5), and a fluid storage tank (236) for storing the fluid supplied to the hydraulic cylinder (210) and the fluid discharged from the hydraulic cylinder (210).

[0066] The first solenoid valve (SS1) can operate when the load (210a) of the hydraulic cylinder (210) is lowered to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210), the third solenoid valve (SS3) can operate when the load (210a) of the hydraulic cylinder (210) is lowered to transmit the fluid (return oil) discharged from the hydraulic cylinder (210) to the fluid storage tank (236), the fourth solenoid valve (SS4) can operate when the load (210a) of the hydraulic cylinder (210) is raised to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210), and the second solenoid valve (SS2) can operate when the load (210a) of the hydraulic cylinder (210) is raised to transmit the fluid The fluid discharged from the hydraulic cylinder (210) can be transmitted to the fluid storage tank (236), and the parallel arrangement of the fifth solenoid valve (SS5) and the orifice (233) can be provided between the hydraulic cylinder (210) and the first solenoid valve (SS1), and between the hydraulic cylinder (210) and the second solenoid valve (SS2), and the first to fourth solenoid valves (SS1, SS2, SS3, SS4) can be valves that are set to open when operated and close when not operated, and the fifth solenoid valve (SS5) can be a valve that is set to close when operated and open when not operated.

[0067] The cylinder pack (200) may further include a pressure gauge (235) for measuring the pressure of the fluid discharged from the pump (232), a relief valve (234) provided between the discharge portion of the pump (232) and the fluid storage tank (236) to operate when the pressure of the fluid discharged from the pump (232) exceeds a set maximum allowable pressure value to relieve overpressure, a pressure sensor (237) provided between the pump (232) and the first solenoid valve (SS1) and between the pump (232) and the fourth solenoid valve (SS4), and a check valve (238) provided between the third solenoid valve (SS3) and the fluid storage tank (236) and between the second solenoid valve (SS2) and the fluid storage tank (236).

[0068] The fluid storage tank (236) may be equipped with a heater for controlling the temperature of the stored fluid, and when the heating switch (330) provided on the main panel (300) is turned on, a signal is sent to the power pack (220) corresponding to the set zone, so that the temperature of the fluid can be controlled through the heater.

[0069] In the case of lowering the load (210a) of the hydraulic cylinder (210), the hydraulic motor (231) is operated to operate the pump (232), the pump (232) discharges fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the first solenoid valve (SS1) and the fifth solenoid valve (SS5), and the fluid (return fluid) discharged from the hydraulic cylinder (210) can be transmitted to the fluid storage tank (236) through the third solenoid valve (SS3).

[0070] In the case of raising the load (210a) of the hydraulic cylinder (210), in order to prevent the impact caused by the hydraulic cylinder (210), the fifth solenoid valve (SS5) is first operated (On) for a preset time so that the fluid discharged from the hydraulic cylinder (210) flows through the orifice (233) (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) do not operate), and thereafter, the fifth solenoid valve (SS5) continues to operate (On) for a preset time so that the hydraulic motor (231) operates, the pump (232) operates, and the pump (232) discharges the fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the fourth solenoid valve (SS4), and the fluid (return oil) discharged from the hydraulic cylinder (210) flows through the orifice (233) and the second solenoid. The fluid is transmitted to the fluid storage tank (236) through the valve (SS2), and while the load (210a) of the hydraulic cylinder (210) is rising in earnest, the fifth solenoid valve (SS5) is turned off (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) are operated), so that the fluid discharged from the hydraulic cylinder (210) can flow to the fluid storage tank (236) through the fifth solenoid valve (SS5) and the second solenoid valve (SS2).

[0071] All power packs (220) of each zone may be connected in series to the main panel (300) via a communication line (240), and power packs (220) of different zones may not be connected via a communication line (240), and all power packs (220) of each zone may be connected in series to the main panel (300) via an electric line (250), and power packs (220) of different zones may not be connected via an electric line (250), and when an abnormal rise or fall of at least one platform unit (10) among the platform units (10) located in each zone is detected, the operation of all cylinder packs (200) of the zone may be stopped.

[0072] The main panel (300) includes a main power switch (310) for turning the main power on / off, a zone selection switch (312) for turning the power on / off for each zone, an operation preparation switch (314) for starting the hydraulic motor (231) of the selected zone, an emergency stop switch (316) for immediately stopping all operations of the platform lifting system in an emergency, a cylinder raising switch (320) for selecting when the load (210a) of the hydraulic cylinder (210) is raised, a cylinder lowering switch (322) for performing a lowering operation of the hydraulic cylinder (210), an operation stop switch (324) for stopping the operation of the hydraulic cylinder (210), a zone current check display window (326) for monitoring the electric load for each zone so that the current of each zone can be checked, and a display window for monitoring the overall operating status of the main panel (300). It may include a main display window (328).

[0073] Additionally, the main panel (300) may further include a heating switch (330) that can apply heat in winter.

[0074] Hereinafter, a platform lifting system according to a preferred embodiment of the present invention will be described in more detail.

[0075] FIG. 1 is a schematic diagram of a platform lifting system capable of selectively or simultaneously lifting multiple zones. FIG. 2 is a diagram showing an example of a platform unit (10). FIG. 3 is a diagram showing an appearance where an anchor (20), a shoe adapter (30), and a suspension shoe (40) are combined, FIG. 4 is a diagram showing an example of a shoe adapter (30), and FIGS. 5 and 6 are diagrams showing examples of a suspension shoe (40). FIG. 7 is a diagram showing an appearance where a suspension shoe (40) is combined with a shoe adapter (30) and an inner profile (100) and an outer profile (150) are installed on the suspension shoe (40), and FIG. 8 is a diagram showing an appearance where the guide arms (44, 45) of the suspension shoe (40) are opened. FIG. 9 is a diagram showing an upper view of the inner profile (100). Fig. 10 is a drawing showing an appearance in which an anchor (20), a shoe adapter (30), a suspension shoe (40), an inner profile (100), and an outer profile (150) are combined. Fig. 11 is a drawing showing an example of an elevating operation means (400), and Figs. 12 to 14 are drawings showing an appearance of a ratchet (450) when a lever (460) of the elevating operation means (400) is raised, and Figs. 15 to 17 are drawings showing an appearance of a ratchet (450) when a lever (460) of the elevating operation means (400) is lowered. Fig. 18 is a drawing showing an example of an elevating operation means adapter (490). Fig. 19 is a drawing showing an appearance in which an elevating operation means adapter (490), a first elevating operation means (400a), and an outer profile (150) are combined. Fig. 20 is a perspective view showing an example of a cylinder pack (200), Fig. 21 is a front view showing an example of a cylinder pack (200), Fig. 22 is a left side view showing an example of a cylinder pack (200), and Fig. 23 is a right side view showing an example of a cylinder pack (200).Fig. 24 is a drawing showing a combined appearance of an elevating operation means adapter (490), a first elevating operation means (400a), a cylinder pack (200), and a second elevating operation means (400b). Fig. 25 is a drawing showing a combined appearance of an outer profile (150), an elevating operation means adapter (490), a first elevating operation means (400a), and a cylinder pack (200). Fig. 26 is a drawing showing a combined appearance of an outer profile (150), an elevating operation means adapter (490), a first elevating operation means (400a), a cylinder pack (200), and a second elevating operation means (400b). Fig. 27 is a drawing showing the arrangement structure of solenoid valves (SS1, SS2, SS3, SS4, SS5) in a cylinder pack (200). Fig. 28 is a hydraulic circuit diagram showing the configuration of a power pack (220). Fig. 29 is a perspective view illustrating an example of a main panel (300), Fig. 30 is a front view illustrating an example of a main panel (300), Fig. 31 is a left side view illustrating an example of a main panel (300), and Fig. 32 is a right side view illustrating an example of a main panel (300). Figs. 33 to 37 are hydraulic circuit diagrams illustrated to explain the operation of a power pack (220). Fig. 38 is a diagram illustrated to explain a heating operation, a lowering operation of a hydraulic cylinder (210), and an ascending operation of a hydraulic cylinder (210). Figs. 39 to 48 are diagrams illustrated to explain a method of raising and lowering an inner profile (100). Figs. 49 to 55 are diagrams illustrated to explain a method of raising and lowering an outer profile (150).

[0076] Referring to Figures 1 to 55, when constructing a building structure at a construction site or the like, a platform (or scaffolding) that serves as a kind of work platform is installed on the exterior wall of the structure to facilitate smooth work on the structure's exterior wall. This platform is installed and moved while continuously rising upward as the number of floors of the structure increases.

[0077] The present invention provides a system capable of selectively or simultaneously elevating at least one zone among a plurality of zones. A platform elevating system according to a preferred embodiment of the present invention can selectively elevate at least one zone among a plurality of zones or elevate all of the zones simultaneously.

[0078] A platform lifting system according to a preferred embodiment of the present invention is a platform lifting system that can selectively lift each zone including a plurality of platform units (10) and can also lift a plurality of zones simultaneously, and includes a platform unit (10) having a plurality of cylinder packs (200) integrally provided with a hydraulic cylinder (210) that provides a driving force for lifting and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210), and a main panel (300) that is provided with a zone selection switch (312) for selecting each zone and transmits a signal (or command) and power for controlling the power pack (220) and provides a user interface for displaying information on the pressure (or load) and operating status of each zone, and the entire zone is divided into at least two zones, and each zone includes a plurality of platform units (10).

[0079] The platform unit (10) may include an inner profile (100) installed on a side facing the outer wall of a structure (CS) and having a plurality of catches (120) at regular intervals to elevate the platform unit (10), an outer profile (150) provided to partially surround the inner profile (100) and to rise or fall along the inner profile (100), a cylinder pack (200) integrally provided with a hydraulic cylinder (210) that provides a driving force for the elevation of the platform unit (10) and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210), and an elevating operation means (400) that can be caught and connected to the catches (120) and is comprised of a pair of upper and lower hydraulic cylinders (210).

[0080] The platform unit (10) may include an inner profile (100), an outer profile (150), a cylinder pack (200), and an elevation operation means (400a, 400b). The platform unit (10) may be provided with a plurality of integral components including the inner profile (100), the outer profile (150), the cylinder pack (200), and the elevation operation means (400).

[0081] The cylinder pack (200) is electrically connected to the main panel (300) and serves to raise and lower the platform unit (10) by receiving a signal (or command) transmitted from the main panel (300).

[0082] A platform lifting system according to a preferred embodiment of the present invention can selectively raise (lift) or lower each zone including a plurality of platform units (10), and can also raise (lift) or lower multiple zones simultaneously.

[0083] Each zone may include a plurality of platform units (10), and each platform unit (10) may include a plurality of cylinder packs (200). For example, at least two cylinder packs (200) may be provided in one platform unit (10). The entire zone may be divided into at least two zones, and at most four zones. Fig. 1 shows a configuration divided into a first zone (Zone1) and a second zone (Zone2).

[0084] An anchor (20) is installed embedded in the outer wall of a structure at a location where lifting and lowering of a platform unit (10) is required, a shoe adapter (30) is fixedly installed to the anchor (20), and a suspension shoe (40) is fixedly installed to the shoe adapter (30). The shoe adapter (30) can be fixed to the anchor (20) via a fixing bolt (22). The suspension shoe (40) can be fixed to the shoe adapter (30) via a supporting pin (32).

[0085] The suspension shoe (40) guides the movement of the inner profile (100), temporarily fixes the inner profile (100) by hooking the hook (110) provided on the inner profile (100), and guides the movement path of the outer profile (150). The suspension shoe (40) supports the hook (110) of the inner profile (100) by hooking and connecting it, and suppresses the left and right shaking of the outer profile (150).

[0086] The suspension shoe (40) includes an upper guide frame (41), a lower guide frame (42) facing the upper guide frame, and a support frame (43) connecting them. The support frames (43) may be provided as a left and right pair.

[0087] A support (53) having a round bar structure is provided at the upper portion between the support frames (43). A hook (110) provided at the upper portion of the inner profile (100) can be hooked to the support (53), and the support (53) can support the lower portion of the hook (110).

[0088] The suspension shoe (40) is formed with guide arms (44, 45) that are closed or opened to partially surround the outer profile (150). As illustrated in FIG. 7, the guide arms (44, 45) partially surround the flange (152) of the outer profile (150), thereby suppressing left-right shaking of the outer profile (150) and fixing it. The guide arms (44, 45) include an upper guide arm (44), a lower guide arm (45), and a support member (46) connecting them, and the upper guide arm (44), the lower guide arm (45), and the support member (46) are provided as a left-right pair based on a stopper (47). The guide arms (44, 45) may further include a guide plate (48) that guides the flange (152) of the outer profile (150). The guide plate (48) serves to guide the flange (152) of the outer profile (150) to prevent it from moving back and forth, and is preferably provided in the form of a flat plate smaller than the width of the web (154) of the outer profile (150).

[0089] The ∩-shaped guide pin (49) has a ∩-shaped structure in which a first guide pin (49a) and a second guide pin (49b) are connected to form a rotational center axis. An elastic member (50) is inserted into the first guide pin (49a) to provide elasticity. The first guide pin (49a) may be provided with a protruding protrusion (51) to support the inserted elastic member (50) so that it does not flow out. The first guide pin (49a) is provided to be able to move in the up-and-down direction and to be able to rotate without moving in the left-right direction. The second guide pin (49b) can rotate the first guide pin (49a) about the rotational center axis to enable movement of the upper guide arm (44) and the lower guide arm (45).

[0090] The upper guide frame (41) corresponding to the second guide pin (49b) of the ∩-shaped guide pin (49) has a concave, curved mounting groove (41b), and the mounting groove (41b) has a radius of curvature larger than that of the second guide pin (49b). The mounting groove (41b) is provided in a semicircular shape when viewed from above to below, and the second guide pin (49b) can rotate while exiting the mounting groove (49b) through an open portion in the semicircular shape. The radius of the second guide pin (49b) is smaller than the radius of curvature of the mounting groove (49b), and when the guide arms (44, 45) are closed, the second guide pin (49b) of the ∩-shaped guide pin (49) is fitted into and mounted in the mounting groove (41b) of the upper guide frame (41). When the guide arm (44, 45) is to be opened, the second guide pin (49b) can rotate clockwise or counterclockwise around the first guide pin (49a) as the rotation center axis while exiting the mounting groove (41b) through the open portion of the mounting groove (41b).

[0091] The stopper (47) is provided to be rotatable, and is hooked to the lower part of the stopper pin (156) of the outer profile (150) to support the outer profile (150). The stopper (47) is always maintained in a state where it can be engaged with the stopper pin (156) when there is no external force. When the outer profile (150) rises, the stopper (47) is pushed upward by the stopper pin (156) and rotates upward, and after the stopper pin (156) passes, it rotates downward by the load. When the stopper (47) rotates downward by the load, it is ready to be hooked to the stopper pin (156). When the stopper (47) is hooked to the stopper pin (156) of the outer profile (150), the outer profile (150) is maintained in a state of being fixed to the suspension shoe (40). In this way, the stopper (47) rotates upward by coming into contact with the stopper pin (156) when the outer profile (150) is raised, and supports the bottom of the stopper pin (156) by engaging with the stopper pin (156) when the outer profile (150) is lowered. When the platform unit (10) needs to be dismantled or lowered, the stopper (47) can be rotated upward as shown in FIG. 6, and then the holding pin (52) can be used to secure the stopper (47).

[0092] The inner profile (100) is installed on the side facing the outer wall of the structure and is provided with a plurality of catches (120) at regular intervals. The outer profile (150) rises or falls along the inner profile (100), and the platform unit (10) rises and falls in conjunction with the elevation of the outer profile (150). The catches (120) are spaced at regular intervals for each section of the inner profile (100). A ratchet (450) of an elevation operation means (400a, 400b) is caught on the catches (120). The inner profile (100) is installed by being caught and connected to a suspension shoe (40) installed on the side facing the outer wall of the structure at a location where the elevation of the platform unit (10) is required. A hook (110) provided on the upper part of the inner profile (100) can be hooked to the support (53) of the suspension shoe (40). The inner profile (100) is installed so as to be partially inserted into the inner side of the outer profile (150). The hook (110) can move along an inclined channel (112), and even if the hook (110) comes into contact with the support (53) when the inner profile (100) rises, the hook (110) is pushed along the channel (112) and can move toward the inner side of the inner profile (100), so that the upper part of the inner profile (100) can rise without interference from the support (53), and after the point where the hook (110) is located passes through the support (53), it can be lowered along the channel (112) by an elastic member to be positioned at a normal position so as to be hung on the upper part of the support (53).

[0093] The outer profile (150) is a structural member having stopper pins (156) provided for each section. In this embodiment, a structure is disclosed in which a first beam in the shape of the letter 'ㄷ' and a second beam in the shape of a 'ㄷ' rotated 180 degrees are coupled to face each other. The outer profile (150) rises or falls together with the platform unit (10) when it rises or falls. The stopper pins (156) are provided at regular intervals for each section of the outer profile (150).

[0094] The lifting operation means (400) can be hooked to the hook (120) of the inner profile (100) and is composed of a pair of upper and lower hydraulic cylinders (210). The lifting operation means (400) includes a first lifting operation means (400a) and a second lifting operation means (400b). The first lifting operation means (400a) is coupled and fixed to the upper part of the hydraulic cylinder (210), and the second lifting operation means (400b) is coupled and fixed to the lower part of the hydraulic cylinder (210).

[0095] The lifting operation means (400) includes an upper frame (410), a lower frame (420) provided facing the upper frame, a housing (430) connecting them, a ratchet (450) rotatable around a rotation axis (452), and a lever (460) for rotating the ratchet (450). A guide channel (440) that partially surrounds the inner profile (100) is formed in the upper frame (410) and the lower frame (420). As illustrated in FIG. 11, the guide channel (440) partially surrounds the edge (130) of the inner profile (100), thereby suppressing left-right shaking of the inner profile (100) and serving as a guide for lifting along the inner profile (100). Rollers (470) may be provided on both sides of the housing (430).

[0096] The ratchet (450) is rotatable around the rotation axis (452), and supports the lower end of the catch (120) of the inner profile (100) so that the inner profile (100) can be raised, or contacts the upper end of the catch (120) of the inner profile (100) so that the platform unit (10) (or outer profile (150)) can be raised. When the lever (460) is lifted up, the ratchet (450) rotates counterclockwise around the rotation axis (452), and when it rotates to a certain extent, it contacts the rotation stopper (470b) so that further rotation is prevented. When the lever (460) is lifted up, the ratchet (450) is prevented from rotating counterclockwise by the rotation stopper (470b), and can rotate to a certain extent in the clockwise direction. When the lever (460) is lowered, the ratchet (450) rotates clockwise around the rotation axis (452), and when it rotates to a certain degree, it contacts the rotation stopper (470a) and is prevented from rotating further. When the lever (460) is lowered, the ratchet (450) is prevented from rotating clockwise by the rotation stopper (470a), and can rotate counterclockwise to a certain degree.

[0097] When raising (lifting) the inner profile (100), at least one of the ratchet (450) of the first lifting operation means (400a) and the ratchet (450) of the second lifting operation means (400b) supports the lower end of the catch (120) of the inner profile (100). When raising (lifting) the inner profile (100), the lever (460) of the first lifting operation means (400a) and the lever (460) of the second lifting operation means (400b) are raised so that the ratchet (450) of the first lifting operation means (400a) or the ratchet (450) of the second lifting operation means (400b) is ready to support the lower end of the catch (120) of the inner profile (100).

[0098] When the platform unit (10) is raised and lowered (when the outer profile (150) is raised and lowered), at least one of the ratchet (450) of the first raising and lowering operation means (400a) or the ratchet (450) of the second raising and lowering operation means (400b) comes into contact with the upper part of the catch (120) of the inner profile (100) and is supported by the catch (120). In order to elevate the platform unit (10) (elevate the outer profile (150)), the lever (460) of the first elevating operation means (400a) and the lever (460) of the second elevating operation means (400b) are lowered so that the ratchet (450) of the first elevating operation means (400a) or the ratchet (450) of the second elevating operation means (400b) is ready to contact the upper part of the catch (120) of the inner profile (100).

[0099] The hydraulic cylinder (210) is coupled between the first lifting operation means (400a) and the second lifting operation means (400b) and provides the driving force required for the lifting operation means (400a, 400b) to be raised and lowered. The first lifting operation means (400a), the second lifting operation means (400b), and the hydraulic cylinder (210) are operated in an assembled state as shown in Fig. 24.

[0100] The first lifting operation means (400a) mounted on the upper part of the hydraulic cylinder (210) is coupled to the lifting operation means adapter (490), and the lifting operation means adapter (490) having a through hole (494) can be coupled and fixed to the outer profile (150) via a fixing pin (498). The upper frame (410) of the lifting operation means (400) is provided with an insertion hole (480) into which a protruding member (492) of the lifting operation means adapter (490) is inserted. A protrusion member (492) equipped with a fixing hole (493) is inserted into the insertion hole (480), and a fixing pin (496) is inserted through a through hole (432) equipped on the upper portion of the first lifting operation means (400a) to connect the first lifting operation means (400a) and the lifting operation means adapter (490).

[0101] The first lifting operation means (400a) and the hydraulic cylinder (210) can be connected by inserting a fixing pin (497) through a through hole (434) provided at the bottom of the first lifting operation means (400a). The upper portion of the hydraulic cylinder (210) is provided with a through hole (212) into which the fixing pin (497) can be inserted.

[0102] The second lifting operation means (400b) and the hydraulic cylinder (210) can be connected by inserting a fixing pin (499) through a through hole (432) provided in the upper portion of the second lifting operation means (400b). A through hole (214) into which the fixing pin can be inserted is provided in the lower portion of the hydraulic cylinder (210).

[0103] The cylinder pack (200) includes a hydraulic cylinder (210) and a power pack (220), is electrically connected to the main panel (300), and receives a signal (or command) transmitted from the main panel (300) to raise or lower the platform unit (10).

[0104] The elevation of the platform unit (10) is achieved by a cylinder pack (200). The cylinder pack (200) includes a hydraulic cylinder (210) and a power pack (220). The cylinder pack (200) is configured as an integral unit with one hydraulic cylinder (210) and one power pack (220) to form one cylinder pack (200). The hydraulic cylinder (210) and the power pack (220) may be connected by a cable or the like. The power pack (220) is a hydraulic power device that provides driving force to the hydraulic cylinder (210). Since one hydraulic cylinder (210) and one power pack (220) for driving it are provided as an integral unit, the cable between the hydraulic cylinder (210) and the power pack (220) can be designed to be very short.

[0105] When a hydraulic line comes out of a power pack and is connected to multiple hydraulic cylinders, pressure loss and deviation due to distribution may occur. However, in the present invention, the hydraulic cylinder (210) and the power pack (220) are configured as an integral unit to form a cylinder pack (200). Accordingly, hoses, couplers, etc. are not required, so the cost of replacing hoses and couplers that occur periodically can be reduced. In addition, there is no leakage from the coupler, so no additional maintenance is required.

[0106] The power pack (220) is connected to the main panel (300) via a communication line (240) and an electric line (250). The power pack (220) may include an operation preparation switch (221), a cylinder lowering switch (223) for selecting when the load (210a) of the hydraulic cylinder (210) is lowered, a cylinder raising switch (222) for selecting the load (210a) raising operation of the hydraulic cylinder (210), and an emergency stop switch (224) for immediately stopping the load (210a) raising or lowering operation of the hydraulic cylinder (210). The power pack (220) may further include a display window (225) for monitoring the overall operating status of the cylinder pack (200). In addition, the power pack (220) may further include an emergency lamp (226) for turning on the light when the hydraulic cylinder (210) is operating abnormally or an abnormality occurs. When abnormal operation or an error occurs during operation of the hydraulic cylinder (210), it can be automatically detected and the emergency lamp (226) can be turned on.

[0107] The power pack (220) can be connected to the main panel (300) via a communication line (240). The power pack (220) is equipped with a communication line connection part (227) for connecting the communication line (240).

[0108] The power pack (220) can be connected to the main panel (300) by an electric wire (250). The power pack (220) is equipped with an electric wire connection part (228) for connecting the electric wire (250).

[0109] The power pack (220) may be equipped with a remote control connection (229) for connecting a remote control (not shown). The lowering or raising operation of the hydraulic cylinder (210) may also be controlled through the remote control.

[0110] The power pack (220) may be equipped with an oil gauge (260) that can check the amount of fluid (oil) stored in the fluid storage tank (236).

[0111] The power pack (220) serves to transmit and control fluid using pressure. The power pack (220) controls the fluid supplied to the hydraulic cylinder (210) and thereby controls the operation of the hydraulic cylinder (210).

[0112] The cylinder pack (200) may include a hydraulic circuit as shown in FIG. 28, and may include a pump (232) for discharging fluid supplied to the hydraulic cylinder (210), a hydraulic motor (231) for operating the pump (232), a plurality of solenoid valves (SS1, SS3) for controlling the flow of fluid by operating when the load (210a) of the hydraulic cylinder (210) is lowered, a plurality of solenoid valves (SS2, SS4) for controlling the flow of fluid by operating when the load (210a) of the hydraulic cylinder (210) is raised, a fifth solenoid valve (SS5) for relieving the pressure of the hydraulic cylinder (210), an orifice (233) arranged in parallel with the fifth solenoid valve (SS5), and a reservoir for storing the fluid supplied to the hydraulic cylinder (210) and the fluid discharged from the hydraulic cylinder (210). It may include a fluid storage tank (236). The cylinder pack (200) may further include a pressure gauge (235) for measuring the pressure of the fluid discharged from the pump (232). In addition, the cylinder pack (200) may further include a relief valve (234) that operates to relieve overpressure when the pressure of the fluid discharged from the pump (232) exceeds a set maximum allowable pressure value. In addition, the cylinder pack (200) may further include a pressure sensor (237). In addition, the cylinder pack (200) may further include a check valve (238).

[0113] The power pack (220) of the cylinder pack (200) may include a hydraulic motor (231). The hydraulic motor (231) may operate a pump (232) that discharges fluid supplied to the hydraulic cylinder (210). The power pack (220) may control the operation of the hydraulic motor (231). When the operation preparation switch (221) provided in the power pack (220) is turned on, the hydraulic motor (231) may be set to automatically operate. In addition, when the zone selection switch (312) provided in the main panel (300) is turned on and the operation preparation switch (314) provided in the main panel (300) is turned on, the hydraulic motor (231) of the selected zone may be set to automatically operate. In addition, when the zone selection switch (312) provided on the main panel (300) is turned on and the operation preparation switch (314) provided on the main panel (300) is turned on, the hydraulic motor (231) of the selected zone can be set to operate automatically. In addition, when the zone selection switch (312) provided on the main panel (300) is turned on and the heating switch (330) provided on the main panel (300) is turned on, the hydraulic motor (231) of the selected zone can be set to operate automatically. The hydraulic motor (231) can be set to automatically stop when the pressure of the hydraulic line or the pressure measured by the pressure gauge (235) becomes a set value (e.g., 100 Bar, 150 Bar) or higher.

[0114] The pump (232) serves to suck fluid from the fluid storage tank (236), apply pressure to push the fluid, and discharge it into the hydraulic line, thereby supplying the fluid to the hydraulic line, and supplying the fluid to the hydraulic cylinder (210) through the hydraulic line.

[0115] The power pack (220) or main panel (300) can control multiple solenoid valves (SS1, SS2, SS3, SS4, SS5) connected to the hydraulic line. A plurality of solenoid valves for controlling the flow of fluid include a first solenoid valve (SS1) that operates when the load (210a) of the hydraulic cylinder (210) descends to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210), a third solenoid valve (SS3) that operates when the load (210a) of the hydraulic cylinder (210) descends to transmit the fluid (return oil) discharged from the hydraulic cylinder (210) to the fluid storage tank (236), a fourth solenoid valve (SS4) that operates when the load (210a) of the hydraulic cylinder (210) rises to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210), and a fourth solenoid valve (SS5) that operates when the load (210a) of the hydraulic cylinder (210) rises to transmit the fluid discharged from the hydraulic cylinder (210) to the fluid storage tank (236). It may include a second solenoid valve (SS2) that transmits, and a fifth solenoid valve (SS5) that is a pressure-relieving solenoid valve. The solenoid valves (SS1, SS2, SS3, SS4) may be configured to open when operated and close when not operated, and the fifth solenoid valve (SS5) may be configured to close when operated and open when not operated.

[0116] The fifth solenoid valve (SS5) operates in advance to relieve pressure from the hydraulic cylinder (210) when the load (210a) of the hydraulic cylinder (210) is to be raised. For this purpose, the fifth solenoid valve (SS5) and the orifice (233) are arranged in parallel. As illustrated in Fig. 28, the fifth solenoid valve (SS5) and the orifice (233) may be arranged in parallel between the hydraulic cylinder (210) and the first solenoid valve (SS1), and between the hydraulic cylinder (210) and the second solenoid valve (SS2).

[0117] In the case of lowering the load (210a) of the hydraulic cylinder (210), the hydraulic motor (231) is operated to operate the pump (232), the pump (232) discharges fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the first solenoid valve (SS1) and the fifth solenoid valve (SS5), and the fluid (return fluid) discharged from the hydraulic cylinder (210) is transmitted to the fluid storage tank (236) through the third solenoid valve (SS3).

[0118] In order to prevent the shock caused by the hydraulic cylinder (210) when the load (210a) of the hydraulic cylinder (210) is to be raised, the fifth solenoid valve (SS5) is first operated (On) for a preset time (e.g., about 1 second) so that the fluid discharged from the hydraulic cylinder (210) flows through the orifice (233) (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) do not operate), and thereafter, while the fifth solenoid valve (SS5) continues to operate (On) for a preset time (about 5 to 6 seconds after the fifth solenoid valve (SS5) starts to operate), the hydraulic motor (231) is operated, the pump (232) operates, the pump (232) discharges the fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the fourth solenoid valve (SS4). The fluid (return oil) discharged from the hydraulic cylinder (210) is transmitted to the fluid storage tank (236) through the orifice (233) and the second solenoid valve (SS2) (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) are operated), and while the load (210a) of the hydraulic cylinder (210) is rising in earnest, the fifth solenoid valve (SS5) is turned off (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) are operated), so that the fluid discharged from the hydraulic cylinder (210) flows through the fifth solenoid valve (SS5) and the second solenoid valve (SS2) to the fluid storage tank (236) instead of flowing through the orifice (233). By using the parallel arrangement of the fifth solenoid valve (SS5) and the orifice (233), a differential pressure can be generated, minimizing the momentary shock that occurs when the hydraulic cylinder (210) under load is folded.

[0119] The relief valve (234) sets the maximum allowable pressure within the hydraulic line and operates to relieve overpressure when the pressure exceeds the set value. The relief valve (234) prevents damage to the cylinder pack (200) and maintains safe operation when the hydraulic line is overloaded, thereby preventing the cylinder pack (200) from being damaged in an unexpected situation. The relief valve (234) may be set to operate automatically when the heating switch (330) is turned on. The relief valve (234) may be provided between the discharge portion of the pump (232) and the fluid storage tank (236).

[0120] The pressure sensor (237) may serve to measure the pressure of the fluid discharged to the pump (232). The pressure sensor (237) may be provided between the pump (232) and the first solenoid valve (SS1) and between the pump (232) and the fourth solenoid valve (SS4). The operating status of the hydraulic cylinder (210) can be monitored in real time using the pressure sensor (237), thereby maintaining stability and efficiency in the lifting operation of the platform unit (10). When a pressure overload occurs (when the set pressure value is exceeded), the operation of the hydraulic cylinder (210) can be stopped, thereby stopping the raising or lowering of the platform unit (10).

[0121] A pressure gauge (235) can check the pressure of the hydraulic line to enable pressure regulation in the hydraulic line. The pressure gauge (235) measures fluid pressure, ensures that the fluid is operating within a safe range, and allows for corrective action when a problem occurs. The pressure gauge (235) can be installed at the discharge port of the pump (232).

[0122] The fluid storage tank (236) serves to store the fluid and supply the stored fluid to the hydraulic line. The fluid storage tank (236) may be equipped with a heater (not shown) to control the temperature of the stored fluid. In particular, since the temperature of the fluid may drop significantly in winter, the heater can be used to appropriately maintain the temperature of the fluid. The main panel (300) may be equipped with a heating switch (330) that can apply heat in winter, and when the heating switch (330) is turned on, a signal is sent to the power pack (220) corresponding to the set zone, so that the temperature of the fluid can be controlled through the heater. The main panel (300) can turn heating on / off for each zone, and the heating time can be set and controlled.

[0123] The check valve (238) serves to prevent backflow of fluid returning to the fluid storage tank (236). The check valve (238) may be provided between the third solenoid valve (SS3) and the fluid storage tank (236) and between the second solenoid valve (SS2) and the fluid storage tank (236).

[0124] An air-cooling cooling fan (not shown) may be installed in the cylinder pack (200), and a simultaneous operation system rather than a continuous pump operation system may be used to minimize the fluid temperature rise that occurs during work in the summer.

[0125] The power packs (220) of the cylinder packs (200) arranged in each platform unit (10) are connected to the main panel (300) via communication lines (240). All power packs (220) in the same zone are connected in series to each other via communication lines (240). The communication lines (240) may be designed in the form of a bus (BUS) data link that allows synchronous operation of multiple power packs (220). The communication lines (240) may be provided so as to be able to connect all power packs (220) in the same zone.

[0126] The power pack (220) of the cylinder pack (200) arranged in each platform unit (10) is connected to the main panel (300) by an electric line (250). All power packs (220) in the same area are connected in series to each other by an electric line (250).

[0127] The connection between the cylinder packs (200) is not a hydraulic line connection, but a communication line (240) and an electric line (250), so that there is almost no pressure loss or deviation due to the connection and distribution of multiple cylinder packs (200), the synchronization rate between the cylinder packs (200) is very high, and when a cylinder pack (200) breaks down, a quick lifting operation can be performed by simply replacing the cylinder pack (200) and attaching and detaching the communication line (240) and the electric line (250) without a separate setting.

[0128] The main panel (300) can transmit signals (or commands) for controlling the power pack (220) connected to each hydraulic cylinder (210) and provide a user interface for displaying information about the pressure (or load) of each zone, the pressure (or load) of each platform unit (10), and the operating status.

[0129] The main panel (300) includes a main power switch (310) for turning the main power on / off, a zone selection switch (312) for turning the power on / off for each zone, an operation preparation switch (314) for starting the hydraulic motor (231) of the selected zone, an emergency stop switch (316) for immediately stopping all operations of the platform lifting system in an emergency, a cylinder raising switch (320) for selecting when the load (210a) of the hydraulic cylinder (210) is raised, a cylinder lowering switch (322) for performing a lowering operation of the hydraulic cylinder (210), an operation stop switch (324) for stopping the operation of the hydraulic cylinder (210), a zone current check display window (326) for monitoring the electric load for each zone so that the current of each zone can be checked, and a main display window (328) for monitoring the overall operating status of the main panel (300). It may include a heating switch (330) that can apply heat in winter. The main panel (300) may further include a cylinder lowering selection switch (318) that selects when lowering the load (210a) of the hydraulic cylinder (210), a volt check gauge (332) for checking voltage, and an ampere check gauge (334) for checking main current.

[0130] The operating status of the cylinder pack (200) may be displayed through the main display window (328), allowing for confirmation of the progress. In the event of abnormal operation or anomaly, information may be displayed on the main display window (328).

[0131] In addition, the main panel (300) may further include an operation and alarm lamp (340) for lighting up in the event of abnormal operation or an error. When the platform lifting system is in operation, the operation and alarm lamp (340) can be automatically detected and turned on when an abnormal operation or an error occurs. The operation and alarm lamp (340) is normally blinking and can be turned on during operation, and can be turned on in green during operation preparation and operation, and in red during an emergency.

[0132] In addition, the main panel (300) may further include a buzzer (338) to generate an alarm in the event of abnormal operation or an error. When the platform lifting system is in operation, an abnormal operation or an error occurs, and an alarm is generated through the buzzer (338).

[0133] Additionally, the main panel (300) may further include an alarm reset button (336) that can turn off the alarm when it sounds.

[0134] Additionally, the main panel (300) may further include a confirmation lamp (340) for operation preparation and operation confirmation for each zone. The operator can monitor the ascent or descent of each zone through the main panel (300).

[0135] In the event of an abnormal operation or abnormality, such as a deviation between the hydraulic cylinders (210) or an abnormal pressure occurring in the hydraulic cylinders (210), all operations of the platform lifting system can be stopped immediately, and the operation of the platform lifting system can be forcibly stopped using an emergency stop switch (316), etc.

[0136] The main panel (300) can be connected to the main power supply through the main power connection (342).

[0137] You can select a zone by turning on the zone selection switch (312) of the zone you wish to board.

[0138] The hydraulic motor (231) of the selected area can be operated by turning on the driving preparation switch (314). When the driving preparation switch (314) is turned on, the hydraulic motor (231) of the selected area can be set to operate automatically.

[0139] The lowering operation of the hydraulic cylinder (210) can be performed by turning on the cylinder lowering switch (322). When the cylinder lowering switch (322) is turned on, the first solenoid valve (SS1) and the third solenoid valve (SS3) can be set to operate automatically.

[0140] The cylinder rising switch (320) can be turned on to perform a rising operation of the hydraulic cylinder (210). When the cylinder rising switch (320) is turned on, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) can be set to operate automatically.

[0141] The main panel (300) may be equipped with a remote control connection part (344) for connecting a remote control (not shown). The lowering or rising operation of a selected zone can also be controlled through the remote control.

[0142] The main panel (300) is provided with a communication line connection unit (348) for connecting a communication line (240) for each zone. For example, a first communication line connection unit (348a) for connecting a communication line (240) connected to a first zone (Zone1), a second communication line connection unit (348b) for connecting a communication line (240) connected to a second zone (Zone2), a third communication line connection unit (348c) for connecting a communication line (240) connected to a third zone (Zone3), and a fourth communication line connection unit (348d) for connecting a communication line (240) connected to a fourth zone (Zone4) may be provided.

[0143] The main panel (300) is provided with an electric wire connection part (346) for connecting an electric wire (250) for each zone. For example, a first electric wire connection part (346a) for connecting an electric wire (250) connected to a first zone (Zone1), a second electric wire connection part (346b) for connecting an electric wire (250) connected to a second zone (Zone2), a third electric wire connection part (346c) for connecting an electric wire (250) connected to a third zone (Zone3), and a fourth electric wire connection part (346d) for connecting an electric wire (250) connected to a fourth zone (Zone4) may be provided.

[0144] The main panel (300) can monitor the pressure (or load) in each platform unit (10) while the platform units (10) of each zone are raised or lowered simultaneously.

[0145] The main panel (300) is equipped to operate all power packs (220). All power packs (220) can be controlled by the main panel (300).

[0146] FIG. 1 shows a configuration in which the platform is divided into a first zone (Zone1) and a second zone (Zone2), the first zone (Zone1) includes six platform units (10), the second zone (Zone2) includes six platform units (10), and each platform unit (10) includes two cylinder packs (200). Depending on the field situation, the number of zones, the number of platform units (10) included in each zone, and the number of cylinder packs (200) included in the platform unit (10) can be adjusted.

[0147] All power packs (220) in Zone 1 are connected in series through a first communication line (240a). All power packs (220) in Zone 1 are connected to the main panel (300) through the first communication line (240a). The first communication line (240a) can synchronize all power packs (220) located in Zone 1. The power packs (220) in Zone 1 communicate through the first communication line (240a). If an abnormal rise or fall of at least one platform unit (10) among the platform units (10) located in Zone 1 is detected, the operation of all cylinder packs (200) in Zone 1 can be stopped.

[0148] All power packs (220) in the second zone (Zone2) are connected in series via the second communication line (240b). All power packs (220) in the second zone (Zone2) are connected to the main panel (300) via the second communication line (240b). The second communication line (240b) can synchronize all power packs (220) located in the second zone (Zone2). The power packs (220) in the second zone (Zone2) communicate via the second communication line (240b). If an abnormal rise or fall of at least one platform unit (10) among the platform units (10) located in the second zone (Zone2) is detected, the operation of all cylinder packs (200) in the second zone (Zone2) can be stopped.

[0149] Power packs (220) in different zones are not connected via a communication line (240). For example, the power pack (220) in the first zone (Znoe1) and the power pack (220) in the second zone (Zone2) are not connected via a communication line (240).

[0150] Power packs (220) for each zone (e.g., Zone 1, Zone 2) are connected in series via electric lines (250). The electric lines (250) supply power to each power pack (220).

[0151] All power packs (220) in Zone 1 are connected in series via the first electric line (250a). All power packs (220) in Zone 1 are connected to the main panel (300) via the first electric line (250a). The first electric line (250a) supplies power to each power pack (220) in Zone 1.

[0152] All power packs (220) in Zone 2 are connected in series via a second electric line (250b). All power packs (220) in Zone 2 are connected to the main panel (300) via a second electric line (250a). The second electric line (250b) supplies power to each power pack (220) in Zone 2.

[0153] Power packs (220) in different zones are not connected via electric lines (250). For example, the power pack (220) in Zone 1 (Znoe1) and the power pack (220) in Zone 2 (Zone2) are not connected via electric lines (250).

[0154] Below, the heating operation, the operation preparation operation for operating the hydraulic cylinder (210), the lowering operation of the load (210a) of the hydraulic cylinder (210), and the raising operation of the load (210a) of the hydraulic cylinder (210) are described.

[0155] 1. Heating action

[0156] The fluid storage tank (236) may be equipped with a heater (not shown) to control the temperature of the stored fluid. In particular, since the temperature of the fluid may drop significantly in winter, the heater can be used to appropriately maintain the temperature of the fluid. The main panel (300) may be equipped with a heating switch (330) capable of applying heat in winter, and when the heating switch (330) is turned on, a signal is sent to the power pack (220) corresponding to the set zone, thereby controlling the temperature of the fluid through the heater.

[0157] For heating operation, the main power switch (310) of the main panel (300) is turned on, a zone to be heated (at least one of the first to fourth zones) is selected, the zone selection switch (312) is turned on, and the heating switch (330) is turned on. When the heating switch (330) is turned on, the hydraulic motor (231) of the selected zone can be automatically operated. In addition, when the heating switch (330) is turned on, the relief valve (234) of the selected zone can be automatically operated. When the hydraulic motor (231) is operated, the pump (232) discharges fluid from the fluid storage tank (236), and the fluid discharged from the pump (232) is transmitted to the fluid storage tank (236) via the relief valve (234). During heating operation, a fluid flow occurs as shown by the arrows in FIG. 33.

[0158] When the heating operation is performed for a set period of time, the heating switch (330) may be set to turn off. When the heating switch (330) is turned off, the operation of the hydraulic motor (231) and the relief valve (234) of the selected area is stopped. When the heating switch (330) is turned off, the operation of the hydraulic motor (231) and the relief valve (234) may be set to automatically stop.

[0159] 2. Driving preparation movements

[0160] Turn on the main power switch (310) of the main panel (300), select the zone in which the platform is to be raised (at least one of zones 1 to 4), turn on the zone selection switch (312), and turn on the operation preparation switch (314). When the operation preparation switch (314) is turned on, the hydraulic motor (231) of the selected zone can be automatically operated. During the operation preparation operation, a fluid flow occurs as indicated by the arrows in FIG. 34.

[0161] When the pressure of the fluid measured by the pressure sensor (237) reaches a set value (e.g., 100 Bar), the operation of the hydraulic motor (231) is stopped. When the pressure of the fluid reaches the set value (e.g., 100 Bar), the operation of the hydraulic motor (231) can be set to automatically stop.

[0162] When this state is reached, the driving preparation state is achieved.

[0163] The driving preparation stage can be used to check the work readiness status by reaching the set pressure for instantaneous operation preparation in advance, and to enable simultaneous lifting and lowering operations for multiple zones or multiple platform units (10).

[0164] 3. Descending motion

[0165] The operation of lowering the load (210a) of the hydraulic cylinder (210) can be performed as follows.

[0166] In the operation ready state described above, the cylinder lowering switch (322) is turned on. When the cylinder lowering switch (322) is turned on, the hydraulic motor (231) of the selected area can be automatically operated. The first solenoid valve (SS1) and the third solenoid valve (SS3) are operated. When the cylinder lowering switch (322) is turned on, the first solenoid valve (SS1) and the third solenoid valve (SS3) can be set to operate automatically. The first solenoid valve (SS1) and the third solenoid valve (SS3) may be valves that are set to open when operated and close when not operated, and the fifth solenoid valve (SS5) may be a valve that is set to close when operated and open when not operated. When the hydraulic motor (231) is operated, the pump (232) discharges fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the first solenoid valve (SS1) and the fifth solenoid valve (SS5), and the fluid (return oil) discharged from the hydraulic cylinder (210) is transmitted to the fluid storage tank (236) through the third solenoid valve (SS3). During the lowering operation, a fluid flow occurs as indicated by the arrows in Fig. 35.

[0167] When the pressure of the fluid measured by the pressure sensor (237) reaches a set value (e.g., 150 Bar), the operation of the hydraulic motor (231) is stopped. When the pressure of the fluid reaches the set value (e.g., 150 Bar), the operation of the hydraulic motor (231) can be set to automatically stop. In addition, when the pressure of the fluid reaches the set value (e.g., 150 Bar), the operation of the first solenoid valve (SS1) and the third solenoid valve (SS3) is stopped. When the pressure of the fluid reaches the set value (e.g., 150 Bar), the operation of the first solenoid valve (SS1) and the third solenoid valve (SS3) can be set to automatically stop. The pressure sensor set value during the lowering operation is set to be greater than the pressure sensor set value during the operation preparation operation described above.

[0168] 4. Rising movement

[0169] In the driving ready state described above, only the fifth solenoid valve (SS5) is operated for a preferentially set time (e.g., approximately 1 second).

[0170] Turn on the cylinder rise switch (320). When the cylinder rise switch (320) is turned on, the hydraulic motor (231) of the selected area can be automatically operated. The second solenoid valve (SS2) and the fourth solenoid valve (SS4) are operated. When the cylinder rise switch (320) is turned on, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) can be set to operate automatically. The second solenoid valve (SS2) and the fourth solenoid valve (SS4) may be valves that are set to open when operated and close when not operated, and the fifth solenoid valve (SS5) may be a valve that is set to close when operated and open when not operated. When the hydraulic motor (231) operates, the pump (232) discharges fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the fourth solenoid valve (SS4), and the fluid (return oil) discharged from the hydraulic cylinder (210) is transmitted to the fluid storage tank (236) through the orifice (233) and the second solenoid valve (SS2). When the shock prevention circuit operates as described above, a fluid flow occurs as indicated by the arrows in FIG. 36.

[0171] The fifth solenoid valve (SS5) is stopped after a set period of time (e.g., about 5 to 6 seconds after the fifth solenoid valve (SS5) operates).

[0172] When the operation of the fifth solenoid valve (SS5) stops, the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the fourth solenoid valve (SS4), and the fluid (return oil) discharged from the hydraulic cylinder (210) is transmitted to the fluid storage tank (236) through the fifth solenoid valve (SS5) and the second solenoid valve (SS2). During this upward movement, a fluid flow occurs as indicated by the arrows in Fig. 37.

[0173] When the pressure of the fluid measured by the pressure sensor (237) reaches a set value (e.g., 150 Bar), the operation of the hydraulic motor (231) is stopped. When the pressure of the fluid reaches the set value (e.g., 150 Bar), the operation of the hydraulic motor (231) can be set to automatically stop. In addition, when the pressure of the fluid reaches the set value (e.g., 150 Bar), the operation of the second solenoid valve (SS2) and the fourth solenoid valve (SS4) is stopped. When the pressure of the fluid reaches the set value (e.g., 150 Bar), the operation of the second solenoid valve (SS2) and the fourth solenoid valve (SS4) can be set to automatically stop. The pressure sensor set value during the rising operation is set to be greater than the pressure sensor set value during the operation preparation operation described above.

[0174] Below, a method for raising and lowering the platform unit (10) is specifically described.

[0175] 1. Lifting of inner profile (100)

[0176] In order to lift (raise) the inner profile (100), the lever (460) of the lifting operation means (400) is raised as shown in FIGS. 40 and 41. FIG. 40 shows the portion corresponding to 'A' in FIG. 39, showing the lever (460) of the first lifting operation means (400a) being lifted, and FIG. 41 shows the portion corresponding to 'B' in FIG. 39, showing the lever (460) of the second lifting operation means (400b) being lifted. When the lever (460) of the first lifting operation means (400a) and the lever (460) of the second lifting operation means (400b) are raised, the ratchet (450) of the first lifting operation means (400a) or the ratchet (450) of the second lifting operation means (400b) is ready to support the lower part of the catch (120) of the inner profile (100).

[0177] As illustrated in Fig. 42, the load (210a) of the hydraulic cylinder (210) is lowered. The lowering operation of the load (210a) of the hydraulic cylinder (210) can be performed as described above (see Figs. 35 and 38). The lowering operation of the load (210a) of the hydraulic cylinder (210) can be performed as a whole for each selected area, or only for the hydraulic cylinder (210) of each platform unit (10). In the case where the lowering operation is to be performed as a whole for each selected area, it can be performed by turning on the cylinder lowering switch provided in the remote control (not illustrated) connected to the main panel (300), or it can be performed by turning on the cylinder lowering switch (322) provided in the main panel (300). When a load (210a) lowering operation is to be performed on the hydraulic cylinder (210) of the individual platform unit (10), this can be done by turning on the cylinder lowering switch provided in the remote control (not shown) connected to the power pack (220) to be lowered, or by turning on the cylinder lowering switch (223) provided in the power pack (220). Even if the ratchet (450) of the first lifting operation means (400a) and the ratchet (450) of the second lifting operation means (400b) come into contact with the upper part of the engaging portion (120) during the lowering operation of the load (210a) of the hydraulic cylinder (210), the ratchet (450) can rotate clockwise to a certain extent, so that the load (210a) of the hydraulic cylinder (210) can be lowered while passing through the engaging portion (120) without interference, and the second lifting operation means (400b) can also be lowered together.

[0178] As illustrated in Fig. 44, the load (210a) of the hydraulic cylinder (210) is raised. The raising operation of the load (210a) of the hydraulic cylinder (210) can be performed as described above (see Figs. 36 to 38). As illustrated in Fig. 43, during the raising of the load (210a) of the hydraulic cylinder (210), the ratchet (450) of the second lifting operation means (400b) comes into contact with the lower end of the engaging portion (120) of the inner profile (100), and the engaging portion (120) of the inner profile (100) is supported by the ratchet (450) of the second lifting operation means (400b), causing the inner profile (100) to rise. The load (210a) raising operation of the hydraulic cylinder (210) can be performed globally for each selected area, or only for the hydraulic cylinders (210) of individual platform units (10). In the case where the raising operation is to be performed globally for each selected area, it can be performed by turning on the cylinder raising switch provided in the remote control (not shown) connected to the main panel (300), or by turning on the cylinder raising switch (320) provided in the main panel (300). In the case where the load (210a) raising operation is to be performed for the hydraulic cylinders (210) of individual platform units (10), it can be performed by turning on the cylinder raising switch provided in the remote control (not shown) connected to the power pack (220) to be raised, or by turning on the cylinder raising switch (222) provided in the power pack (220). During the upward movement of the load (210a) of the hydraulic cylinder (210), the ratchet (450) is prevented from rotating counterclockwise by the rotation stopper (470b) and remains engaged with the engaging portion (120).

[0179] The load (210a) of the hydraulic cylinder (210) is lowered again. When the load (210a) of the hydraulic cylinder (210) is lowered again, the inner profile (100) is lowered together with the hook (120) of the inner profile (100) being supported by the ratchet (450) of the second lifting operation means (400b), and when it is lowered a little, as shown in FIG. 45, the ratchet (450) of the first lifting operation means (400a) comes into contact with the lower part of the hook (120) of the inner profile (100), and the hook (120) of the inner profile (100) is supported by the ratchet (450) of the first lifting operation means (400a), and the inner profile (100) is no longer lowered. The hook (120) of the inner profile (100) is maintained in a state supported by the ratchet (450) of the first lifting operation means (400a), and during the lowering operation of the rod (210a) of the hydraulic cylinder (210), the ratchet (450) of the second lifting operation means (400b) can rotate clockwise to a certain extent even if it comes into contact with the upper end of the hook (120), so that the rod (210a) of the hydraulic cylinder (210) can be lowered while passing through the hook (120) without being interfered with, and the second lifting operation means (400b) can also be lowered together.

[0180] When the load (210a) of the hydraulic cylinder (210) is sufficiently lowered, the load (210a) of the hydraulic cylinder (210) is raised. When the fluid pressure reaches a set value (e.g., 150 Bar), the operation of the hydraulic motor (231) is automatically stopped, and the load (210a) of the hydraulic cylinder (210) is no longer lowered. The load (210a) of the hydraulic cylinder (210) can be raised as described above.

[0181] In this way, the inner profile (100) is raised to a desired height by repeating the lowering and raising movements of the load (210a) of the hydraulic cylinder (210). At this time, as illustrated in FIG. 46, the inner profile (100) is raised until the hook (110) provided on the upper portion of the inner profile (100) passes through the suspension shoe (40).

[0182] When the hook (110) provided on the upper part of the inner profile (100) passes through the suspension shoe (40), the lever (460) of the first lifting operation means (400a) is lowered as shown in Fig. 47. When the lever (460) of the first lifting operation means (400a) is lowered, the ratchet (450) of the first lifting operation means (400a) can no longer support the lower part of the catch (120) of the inner profile (100).

[0183] The hook (110) provided on the upper part of the inner profile (100) passes through the suspension shoe (40), and after lowering the lever (460) of the first lifting operation means (400a), the rod (210a) of the hydraulic cylinder (210) is lowered again. When the load (210a) of the hydraulic cylinder (210) is lowered again, the inner profile (100) is lowered together with the hook (120) of the inner profile (100) being supported by the ratchet (450) of the second lifting operation means (400b), and when it is lowered a little, the inner profile (100) comes down and the hook (110) can be hooked and connected to the support member (53) of the suspension shoe (40), and the support member (53) hooked and connected to the hook (110) can support the inner profile (100), and the inner profile (100) no longer descends. Since the hook (110) of the inner profile (100) remains supported by the support (53), even if the load (210a) of the hydraulic cylinder (210) is lowered further, the inner profile (100) does not descend any further, and as shown in FIG. 48, after lowering the load (210a) of the hydraulic cylinder (210) a little further, the lever (460) of the second lifting operation means (400b) is lowered.

[0184] 2. Lifting of outer profile (150) (platform unit (10))

[0185] Before lifting (raising) the outer profile (150) (or platform unit (10)), check whether the lever (460) of the first lifting operation means (400a) and the lever (460) of the second lifting operation means (400b) are lowered as shown in FIG. 49. When the lever (460) of the first lifting operation means (400a) and the lever (460) of the second lifting operation means (400b) are lowered, the ratchet (450) of the first lifting operation means (400a) or the ratchet (450) of the second lifting operation means (400b) is caught on the upper end of the catch (120) of the inner profile (100) and is ready to be supported. When the outer profile (150) is lifted (raised or lowered), the platform unit (10) is also lifted in conjunction therewith.

[0186] As illustrated in Fig. 50, the rod (210a) of the hydraulic cylinder (210) is lowered. When the rod (210a) of the hydraulic cylinder (210) is lowered to a certain extent and the ratchet (450) of the second lifting operation means (400b) comes into contact with the upper part of the engaging part (120) of the inner profile (100), the ratchet (450) is caught by the engaging part (120) and is supported. Fig. 51 shows a portion corresponding to 'A' in Fig. 50, in which the ratchet (450) of the second lifting operation means (400b) comes into contact with the upper part of the engaging part (120) of the inner profile (100) and is supported. During the lowering operation of the rod (210a) of the hydraulic cylinder (210), the ratchet (450) is prevented from rotating clockwise by the rotation stopper (470a), and is maintained in a state of being caught by the upper part of the engaging part (120).

[0187] As illustrated in Fig. 52, the rod (210a) of the hydraulic cylinder (210) is further allowed to continue to descend. Since the ratchet (450) of the second lifting operation means (400b) is in contact with and supported by the upper end of the catch (120) of the inner profile (100), when the rod (210a) of the hydraulic cylinder (210) is further allowed to continue to descend, the outer profile (150) and the first lifting operation means (400a) are raised. Even if the ratchet (450) of the first lifting operation means (400a) rises and contacts the lower end of the catch (120) during the lowering operation of the rod (210a) of the hydraulic cylinder (210), the ratchet (450) can rotate counterclockwise to a certain extent, so that the first lifting operation means (400a) can rise while passing through the catch (120) without being interfered with. Fig. 53 shows the portion corresponding to 'A' in Fig. 52, in which the ratchet (450) of the first lifting operation means (400a) passes through the catch (120) of the inner profile (100).

[0188] The lowering operation of the load (210a) of the hydraulic cylinder (210) can be performed as described above (see FIGS. 35 and 38). The lowering operation of the load (210a) of the hydraulic cylinder (210) can be performed as a whole for each selected area, or only for the hydraulic cylinder (210) of each individual platform unit (10). In the case where the lowering operation is to be performed as a whole for each selected area, it can be performed by turning on the cylinder lowering switch provided in the remote control (not shown) connected to the main panel (300), or it can be performed by turning on the cylinder lowering switch (322) provided in the main panel (300). In the case where a load (210a) lowering operation is to be performed on the hydraulic cylinder (210) of the individual platform unit (10), this may be done by turning on the cylinder lowering switch provided in the remote control (not shown) connected to the power pack (220) to be lowered, or by turning on the cylinder lowering switch (223) provided in the power pack (220).

[0189] As illustrated in Fig. 54, the load (210a) of the hydraulic cylinder (210) is raised. When the load (210a) of the hydraulic cylinder (210) is raised, the outer profile (150) is lowered, and when the ratchet (450) of the first lifting operation means (400a) comes into contact with the upper part of the catch (120) of the inner profile (100), the ratchet (450) is caught by the catch (120) and is supported, so that the outer profile (150) is not lowered any further. When the outer profile (150) is lowered, the first lifting operation means (400a) is also linked and lowered together. When the outer profile (150) is raised (raised or lowered), the platform unit (10) is also raised and lowered together in conjunction therewith. Fig. 55 shows a portion corresponding to 'A' in Fig. 54, in which the ratchet (450) of the first lifting operation means (400a) is supported by contacting the upper portion of the catch (120) of the inner profile (100). Even if the ratchet (450) of the second lifting operation means (400b) is raised and contacts the lower portion of the catch (120) during the upward movement of the load (210a) of the hydraulic cylinder (210), the ratchet (450) can rotate counterclockwise to a certain extent, so that the second lifting operation means (400b) can be raised while passing through the catch (120) without interference.

[0190] The upward movement of the load (210a) of the hydraulic cylinder (210) can be performed as described above (see FIGS. 36 to 38). The upward movement of the load (210a) of the hydraulic cylinder (210) can be performed as a whole for each selected area, or only for the hydraulic cylinder (210) of each individual platform unit (10). In the case where the upward movement is to be performed as a whole for each selected area, it can be performed by turning on the cylinder upward switch provided in the remote control (not shown) connected to the main panel (300), or it can be performed by turning on the cylinder upward switch (320) provided in the main panel (300). When performing a load (210a) lifting operation for the hydraulic cylinder (210) of an individual platform unit (10), this may be done by turning on a cylinder lifting switch provided in a remote control (not shown) connected to the power pack (220) to be lifted, or by turning on a cylinder lifting switch (222) provided in the power pack (220).

[0191] In this way, the outer profile (150) is raised to the desired height by repeating the lowering and raising movements of the load (210a) of the hydraulic cylinder (210).

[0192] Above, the preferred embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various modifications are possible by those skilled in the art.

Claims

1. A platform lifting system that can selectively lift each zone including multiple platform units (10) and can also lift multiple zones simultaneously. A platform unit (10) having a plurality of cylinder packs (200) integrally provided with a hydraulic cylinder (210) that provides driving force for lifting and a power pack (220) for controlling the driving and operation of the hydraulic cylinder (210); and It includes a main panel (300) that is equipped with a zone selection switch (312) for selecting each zone, transmits a signal (or command) and power for controlling the power pack (220), and provides a user interface for displaying information on the pressure (or load) and operating status of each zone. The entire area is divided into at least two zones, A platform lifting system characterized in that each zone includes a plurality of platform units (10).

2. In the first paragraph, the platform unit (10) is installed on a side facing the outer wall of the structure (CS) and has a plurality of catches (120) provided at regular intervals to elevate the platform unit (10) and an inner profile (100); An outer profile (150) that is provided to partially surround the inner profile (100) and rises or falls along the inner profile (100); A cylinder pack (200) having a hydraulic cylinder (210) that provides driving force for the elevation of the platform unit (10) and a power pack (220) that controls the driving and operation of the hydraulic cylinder (210) as an integral unit; and It includes an elevating operation means (400) that can be connected to the above-mentioned hook (120) and is composed of a pair of upper and lower hydraulic cylinders (210). A platform lifting system characterized in that the above outer profile (150) is lifted and lowered in conjunction with the lifting of the platform unit (10).

3. In the first paragraph, a platform lifting system in which the platform unit (10) is provided with a plurality of integral components including the inner profile (100), the outer profile (150), the cylinder pack (200), and the lifting operation means (400).

4. In the first paragraph, the cylinder pack (200) A pump (232) that discharges fluid supplied to the hydraulic cylinder (210); A hydraulic motor (231) that operates the above pump (232); A plurality of solenoid valves (SS1, SS3) that operate when the load (210a) of the hydraulic cylinder (210) is lowered to control the flow of fluid; A plurality of solenoid valves (SS2, SS4) that operate when the load (210a) of the hydraulic cylinder (210) rises to control the flow of fluid; A fifth solenoid valve (SS5) for relieving pressure of the above hydraulic cylinder (210); An orifice (233) arranged in parallel with the fifth solenoid valve (SS5); and A platform lifting system characterized by including a fluid storage tank (236) for storing fluid supplied to the hydraulic cylinder (210) and fluid discharged from the hydraulic cylinder (210).

5. In the fourth paragraph, the first solenoid valve (SS1) operates when the load (210a) of the hydraulic cylinder (210) is lowered to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210). The third solenoid valve (SS3) operates when the load (210a) of the hydraulic cylinder (210) is lowered to transfer the fluid (return fluid) discharged from the hydraulic cylinder (210) to the fluid storage tank (236). The fourth solenoid valve (SS4) operates when the load (210a) of the hydraulic cylinder (210) rises to transmit the fluid discharged from the pump (232) to the hydraulic cylinder (210). The second solenoid valve (SS2) operates when the load (210a) of the hydraulic cylinder (210) rises to transfer the fluid discharged from the hydraulic cylinder (210) to the fluid storage tank (236). A parallel arrangement of the fifth solenoid valve (SS5) and the orifice (233) is provided between the hydraulic cylinder (210) and the first solenoid valve (SS1), and between the hydraulic cylinder (210) and the second solenoid valve (SS2). The above first to fourth solenoid valves (SS1, SS2, SS3, SS4) are valves that are set to open when operated and close when not operated. A platform lifting system characterized in that the fifth solenoid valve (SS5) is a valve set to close when operated and open when not operated.

6. In the fifth paragraph, the cylinder pack (200) A pressure gauge (235) that measures the pressure of the fluid discharged from the pump (232); A relief valve (234) provided between the discharge portion of the pump (232) and the fluid storage tank (236) to relieve overpressure by operating when the pressure of the fluid discharged from the pump (232) exceeds the set maximum allowable pressure value; A pressure sensor (237) provided between the pump (232) and the first solenoid valve (SS1) and between the pump (232) and the fourth solenoid valve (SS4); A platform lifting system further characterized by including a check valve (238) provided between the third solenoid valve (SS3) and the fluid storage tank (236) and between the second solenoid valve (SS2) and the fluid storage tank (236).

7. In the fifth paragraph, the fluid storage tank (236) is provided with a heater for controlling the temperature of the stored fluid, A platform lifting system characterized in that when the heating switch (330) provided on the main panel (300) is turned on, a signal is sent to the power pack (220) corresponding to the set zone, thereby controlling the temperature of the fluid through the heater.

8. In the fifth paragraph, when the load (210a) of the hydraulic cylinder (210) is to be lowered, the hydraulic motor (231) is operated to operate the pump (232), the pump (232) discharges fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the first solenoid valve (SS1) and the fifth solenoid valve (SS5), and the fluid (return fluid) discharged from the hydraulic cylinder (210) is transmitted to the fluid storage tank (236) through the third solenoid valve (SS3). In the case of raising the load (210a) of the hydraulic cylinder (210), in order to prevent the impact caused by the hydraulic cylinder (210), the fifth solenoid valve (SS5) is first operated (On) for a preset time so that the fluid discharged from the hydraulic cylinder (210) flows through the orifice (233) (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) do not operate), and thereafter, the fifth solenoid valve (SS5) continues to operate (On) for a preset time so that the hydraulic motor (231) operates, the pump (232) operates, and the pump (232) discharges the fluid, and the fluid discharged from the pump (232) is transmitted to the hydraulic cylinder (210) through the fourth solenoid valve (SS4), and the fluid (return oil) discharged from the hydraulic cylinder (210) flows through the orifice (233) and the second solenoid. A platform lifting system characterized in that the fluid discharged from the hydraulic cylinder (210) flows to the fluid storage tank (236) through the fifth solenoid valve (SS5) and the second solenoid valve (SS2) while the load (210a) of the hydraulic cylinder (210) is fully raised, by turning off the fifth solenoid valve (SS5) (at this time, the second solenoid valve (SS2) and the fourth solenoid valve (SS4) are operated).

9. In paragraph 1, all power packs (220) of each zone are connected in series to the main panel (300) through a communication line (240), Power packs (220) in different areas are not connected via communication lines (240). All power packs (220) in each zone are connected in series to the main panel (300) through electric lines (250). Power packs (220) in different areas are not connected via electric lines (250), A platform lifting system characterized in that when an abnormal rise or fall of at least one platform unit (10) among the platform units (10) located in each zone is detected, the operation of all cylinder packs (200) in that zone can be stopped.

10. In the first paragraph, the main panel (300) Main power switch (310) for turning the main power on / off; Zone selection switch (312) for turning the power on / off for each zone; An operation preparation switch (314) that operates the hydraulic motor (231) of the selected area; Emergency stop switch (316) to immediately stop all operations of the platform lifting system in case of an emergency; A cylinder rising switch (320) selected when the load (210a) of the hydraulic cylinder (210) rises; A cylinder lowering switch (322) for performing a lowering operation of the hydraulic cylinder (210); An operation stop switch (324) for stopping the operation of the hydraulic cylinder (210); A zone-specific current check display window (326) for monitoring the zone-specific electrical load so that the current of each zone can be checked; and A platform lifting system characterized by including a main display window (328) for monitoring the overall operating status of the main panel (300).

11. A platform lifting system according to claim 1, characterized in that the main panel (300) further includes a heating switch (330) capable of applying heat in winter.

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