Semi-automatic shutdown safety mechanism for lifting platform of window cleaning machine

Abstract

The utility model relates to a semi-automatic shutdown safety mechanism for a lifting platform of a window cleaning machine. The semi-automatic shutdown safety mechanism comprises a locking plate seat assembly, a locking hook assembly, a rolling shaft assembly, a lower limiting switch and an upper limiting switch, the locking piece seat assembly comprises a bottom plate, self-locking pieces and an upper reinforcing plate, the self-locking pieces are vertically connected to edge openings in the left side and the right side of the bottom plate, through sliding grooves are formed in the self-locking pieces, and extending grooves extending forwards are formed in the upper ends of the sliding grooves; the upper end of the bottom plate is vertically connected with an upper reinforcing plate, the lower surface of the upper reinforcing plate is connected with two self-locking plates, and the upper surface of the upper reinforcing plate is connected with an upper limit switch; the rolling shaft assembly comprises a main shaft, a flanging copper sleeve, a spacer bush, a baffle, a screw and nut assembly and a C-shaped lifting handle. The flanging copper sleeves are clamped in the sliding grooves in a sliding mode. One of the self-locking plates is connected with a lower limit switch, and a switch toggle of the lower limit switch is located at a lower port of the chute; the lock hook assembly comprises a lock hook bottom plate and a lock hook, and the lock hook is perpendicularly connected to the middle of the lock hook bottom plate.

Description

Technical Field

[0001] This utility model relates to the field of window cleaning machine technology, and in particular to a semi-automatic stop safety mechanism for a window cleaning machine lifting platform and a window cleaning machine. Background Technology

[0002] As more and more high-rise buildings in cities are equipped with window cleaning machines, the use of window cleaning machine lifting platforms is also increasing in order to conceal the equipment.

[0003] In the use of lifting platforms, a positioning pin and pin seat are used. When the platform is raised to the highest point, the pin is inserted into the positioning pin seat, and then the platform is lowered, allowing the positioning pin and pin seat to bear the entire load. This ensures that the platform height does not change with the load. However, this operation is relatively cumbersome and requires at least two people to be on standby at the highest point of the platform for operation and coordination. Moreover, if the personnel are not working together under unified command, operational errors are likely to occur, which may even lead to workplace accidents. In order to simplify this operation process and eliminate the problem of company accidents, it is imperative to design a new insurance mechanism.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a semi-automatic stop safety mechanism for a window cleaning machine lifting platform. This semi-automatic stop safety mechanism greatly reduces human error and improves the safety of the window cleaning machine lifting platform.

[0006] This utility model provides a semi-automatic stop safety mechanism for a window cleaning machine lifting platform, including a locking plate seat assembly, a locking hook assembly, a roller assembly, a lower limit switch, and an upper limit switch. The locking plate seat assembly includes a base plate, self-locking plates, and an upper reinforcing plate. The self-locking plates are vertically connected to the left and right edges of the base plate. Each self-locking plate has a through-groove, U-shaped groove, with a forward-extending extension groove at its upper end. The upper reinforcing plate is vertically connected to the upper end of the base plate. The lower part of the upper reinforcing plate is connected to two self-locking plates, and the upper limit switch is connected to the upper reinforcing plate. The switch knob of the upper limit switch is located in front of the extension groove. The roller... The assembly includes a main shaft, a flanged copper sleeve, a spacer, a baffle, a screw and nut assembly, and a C-shaped handle. The main shaft is cylindrical, with the spacer placed in the middle. The flanged copper sleeve is fitted onto both ends of the spacer. The baffle is fixed to both ends of the main shaft using the screw and nut assembly. The C-shaped handle is welded and fixed to the outside of the two baffles. The main shaft is located between two self-locking plates, and the flanged copper sleeve is slidably engaged in the slide groove. A lower limit switch is connected to one of the self-locking plates, and the switch knob of the lower limit switch is located at the lower end of the slide groove. The locking hook assembly includes a locking hook base plate and a locking hook, with the locking hook vertically connected to the middle of the locking hook base plate.

[0007] Using the above technical solution, the semi-automatic stop safety mechanism of this utility model, during assembly, connects the locking plate seat assembly to the top of the four guide columns of the window cleaning machine lifting platform, and the locking hook assembly is connected to the four corners of the lifting platform. Adjusting the vertical clearances between each set of locking plate seat assemblies and locking hook assemblies, the window cleaning machine travels onto the track on the platform, placing the lifting platform under full load, and placing the roller assembly at the lower end of the slide groove; adjusting the height of the window cleaning machine's running track on the lifting platform to match the height of the running track outside the platform, adjusting the working position between the locking hook assembly and the roller assembly, and fixing the locking plate seat assembly and the locking hook assembly; [The text abruptly ends here, likely due to an incomplete translation or source material.] When the lower and upper limit switches are activated, the installation is complete. When the lifting platform is at the bottom, its roller assembly is at point A in the extension slot. As the lifting platform rises, the locking hook assembly rises with it. Approaching the top, the locking hook assembly enters the middle position of the extension slot fixed to the top of the lifting platform's guide column and continues to rise, gradually pushing the roller assembly out of point A in the extension slot. During this program operation, even if the locking hook assembly triggers the upper limit switch to contact 1, the entire platform will still rise. When the roller assembly pushes out of point B in the extension slot, the roller assembly... The platform will automatically slide down the chute to point C within the chute, and simultaneously, the bolts of the roller assembly will trigger the lower limit switch. Once all four roller assemblies have triggered their corresponding lower limit switches, the platform begins to descend. After the locking hook assembly disengages from the switch to contact 1, following a pre-set countdown (typically 3 seconds), the equipment self-confirms that the shutdown safety mechanism is functioning normally, and the lifting platform stops all operations. If none of the four roller assemblies have triggered their corresponding lower limit switches, the lifting platform will continue to ascend until the switch is triggered. When the switch contact 2 is pressed, the equipment stops running and an alarm sounds. When the platform needs to be lowered, press the equipment down-run switch. At this time, the built-in program of the lifting platform will make it move upward. When the locking hook assembly touches the switch knob to switch contact 1, the equipment stops running. At this time, the operator needs to manually lift the roller assembly to the angle between point B in the extension slot and the locking hook assembly, so that the roller assembly is locked. After all the roller assemblies are in place, press the equipment down-run switch again. Since the program has confirmed that there are no objects blocking the lower limit switch knob, the lifting platform will continue to descend until it reaches the lower running end point, and the whole operation is completed.

[0008] Furthermore, multiple waist-shaped holes are evenly spaced at both sides of the base plate, and the waist-shaped holes are arranged in a vertical direction.

[0009] Furthermore, the locking plate assembly also includes a lower reinforcing plate, which is U-shaped, and the upper surface of the lower reinforcing plate is connected to the two self-locking plates.

[0010] Furthermore, multiple waist-shaped holes are evenly spaced at both sides of the bottom plate of the lock hook, and the waist-shaped holes are arranged in a horizontal direction.

[0011] Furthermore, an adjustment pad is connected to the side of the lock hook base plate away from the lock hook.

[0012] Furthermore, the locking plate assembly also includes guide rods, with two guide rods vertically connected to the upper reinforcing plate; the C-shaped handle is fitted onto one of the guide rods.

[0013] By adopting the above technical solution, the guide rod restricts the movement space of the C-shaped handle in the roller assembly, thereby ensuring that the roller assembly will not be interfered with when it slides down due to the presence of the C-shaped handle. Conversely, with the C-shaped handle, when the equipment needs to be lowered, it stops when the locking hook assembly moves upward and triggers the upper limit switch. The operator can lift the roller assembly to the corresponding position by hand by lifting the C-shaped handle, so that the roller assembly enters the ready-to-position state.

[0014] This utility model discloses a semi-automatic stop safety mechanism for a window cleaning machine lifting platform. Through the self-weight of the roller assembly, the sliding groove on the self-locking plate, and the special pushing surface of the locking hook assembly, combined with the two relatively moving main bodies—the locking plate seat assembly and the locking hook assembly—and with the signals from the lower and upper limit switches, it perfectly completes the process of pushing the roller assembly out from the upper waiting point and allowing it to slide freely to the lower working area. Simultaneously, the lower limit switch feeds back to the main control computer, triggering a series of actions such as the locking hook descending and engaging the roller assembly. This allows the lifting platform to perfectly complete the automatic stop operation at the machine position, greatly reducing human error and improving the safety of the window cleaning machine lifting platform. Attached Figure Description

[0015] Figure 1 A schematic diagram of the planar structure of the semi-automatic stop safety mechanism provided in this embodiment of the utility model.

[0016] Figure 2 for Figure 1 A side view of the locking plate seat assembly of the semi-automatic stop safety mechanism.

[0017] Figure 3 for Figure 1 A front view structural diagram of the locking plate seat assembly of the semi-automatic stop safety mechanism.

[0018] Figure 4 for Figure 1 A top view of the locking plate seat assembly of the semi-automatic stop safety mechanism.

[0019] Figure 5 for Figure 1 A side view of the locking hook assembly of the semi-automatic stop safety mechanism.

[0020] Figure 6 for Figure 1 A front view of the locking hook assembly of the semi-automatic stop safety mechanism.

[0021] Figure 7 for Figure 1 A schematic diagram of the cross-sectional structure of the roller assembly of the semi-automatic stop safety mechanism.

[0022] Figure 8 for Figure 1 A top view of the roller assembly of the semi-automatic stop safety mechanism.

[0023] Figure 9 for Figure 1 A schematic diagram simulating the operation of the semi-automatic shutdown safety mechanism.

[0024] The reference numerals and components involved in the accompanying drawings are shown below:

[0025] 1. Locking plate assembly 11. Base plate 12. Self-locking plate

[0026] 13. Upper reinforcing plate; 14. Slide groove; 15. Lower reinforcing plate

[0027] 16. Guide rod 2. Locking hook assembly 21. Locking hook base plate

[0028] 22. Locking hook; 23. Adjusting pad; 3. Roller assembly

[0029] 31. Main spindle; 32. Flanged copper bushing; 33. Spacer sleeve

[0030] 34. Baffle plate; 35. Screw and nut assembly; 36. C-shaped handle.

[0031] 4. Lower limit switch; 5. Upper limit switch; 141. Extension slot Detailed Implementation

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0033] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0034] Example 1

[0035] Figure 1 This is a schematic diagram of the planar structure of the semi-automatic stop safety mechanism provided in an embodiment of the present utility model. Figure 2 for Figure 1A side view of the locking plate seat assembly of the semi-automatic stop safety mechanism. Figure 3 for Figure 1 A front view structural diagram of the locking plate seat assembly of the semi-automatic stop safety mechanism. Figure 4 for Figure 1 A top view of the locking plate seat assembly of the semi-automatic stop safety mechanism. Figure 5 for Figure 1 A side view of the locking hook assembly of the semi-automatic stop safety mechanism. Figure 6 for Figure 1 A front view schematic diagram of the locking hook assembly of the semi-automatic stop safety mechanism. Figure 7 for Figure 1 A schematic diagram of the cross-sectional structure of the roller assembly of the semi-automatic stop safety mechanism. Figure 8 for Figure 1 A top view of the roller assembly of the semi-automatic stop safety mechanism. Please refer to... Figures 1-8 The semi-automatic stop safety mechanism for a window cleaning machine lifting platform provided in this embodiment includes a locking plate seat assembly 1, a locking hook assembly 2, a roller assembly 3, a lower limit switch 4, and an upper limit switch 5. The locking plate seat assembly 1 includes a base plate 11, self-locking plates 12, and an upper reinforcing plate 13. The self-locking plates 12 are vertically connected to the left and right sides of the base plate 11. A through groove 14 is provided on the self-locking plate 12. The groove 14 is U-shaped, and an extension groove 141 extending forward is provided at the upper end of the groove 14. The upper reinforcing plate 13 is vertically connected to the upper end of the base plate 11. The lower part of the upper reinforcing plate 13 is connected to the two self-locking plates 12, and the upper limit switch 5 is connected to the upper part of the upper reinforcing plate 13. The switch knob of the upper limit switch 5 is located in front of the extension groove 141. The roller assembly 3 includes a main... The assembly comprises a shaft 31, a flanged copper sleeve 32, a spacer 33, a baffle 34, a screw and nut assembly 35, and a C-shaped handle 36. The main shaft 31 is cylindrical, with the spacer 33 placed in the middle. The flanged copper sleeves 32 are fitted onto both ends of the spacer 33. The baffles 34 are fixed to both ends of the main shaft 31 using the screw and nut assembly 35. The C-shaped handle 36 is welded and fixed to the outside of the two baffles 34. The main shaft 31 is located between two self-locking plates 12, and the flanged copper sleeves 32 are slidably engaged in the slide groove 14. A lower limit switch 4 is connected to one of the self-locking plates 12, and the switch knob of the lower limit switch 4 is located at the lower end of the slide groove 14. The locking hook assembly 2 includes a locking hook base plate 21 and a locking hook 22, with the locking hook 22 vertically connected to the middle of the locking hook base plate 21.

[0036] Figure 9 for Figure 1 A schematic diagram simulating the operation of the semi-automatic shutdown safety mechanism. Please refer to... Figure 1 , Figure 9 It should be noted that, during assembly, the locking plate seat assembly 1 of this utility model is connected to the top of the four guide columns of the window cleaning machine's lifting platform, and the locking hook assembly 2 is connected to the four corners of the lifting platform. The vertical clearances between each set of locking plate seat assemblies 1 and locking hook assemblies 2 are adjusted. At this time, the window cleaning machine moves onto the track on the platform, allowing the lifting platform to be under full load, and the roller assembly 3 is placed at the lower end of the slide groove 14. Figure 9 (Point C in the middle); adjust the height of the window cleaning machine running track on the lifting platform to be consistent with the height of the running track outside the platform, adjust the working position between the locking hook assembly 2 and the roller assembly 3, and fix the locking plate seat assembly 1 and the locking hook assembly 2; at the same time, turn on the lower limit switch 4 and the upper limit switch 5, and the installation work is completed;

[0037] When the lifting platform is at the bottom, its roller assembly 3 is located at point A in the extension groove 141 (e.g., Figure 9 As shown), when the lifting platform rises, the locking hook assembly 2 will rise along with the lifting platform. When it approaches the top, the locking hook assembly 2 enters the middle position of the extension groove 141 fixed at the top of the guide column of the lifting platform, and continues to rise, gradually pushing the roller assembly 3 out of point A in the extension groove 141. In this program operation step, even if the locking hook assembly 2 triggers the switch knob of the upper limit switch 5 to the switch contact 1, the entire platform will still rise. When the roller assembly 3 pushes out of point B in the extension groove 141, the roller assembly 3 will automatically slide down from the slide 14 to point C in the slide 14 (as shown). Figure 9 (As shown), at the same time, the bolt 32 of the roller assembly 3 will trigger the switch knob of the lower limit switch 4;

[0038] When all four roller assemblies 3 trigger their corresponding lower limit switches 4, the platform begins to descend. After the locking hook assembly 2 disengages from the switch switch and reaches the switch contact 1, a countdown timer (usually 3 seconds) is set up in the control program. The equipment then self-confirms that the shutdown safety mechanism has entered normal operation, and the lifting platform stops all operations. If none of the four roller assemblies 3 triggers their corresponding lower limit switches 4, the lifting platform will continue to ascend until the switch switch is triggered to the switch contact 2, at which point the equipment stops and an alarm sounds.

[0039] When the platform needs to be lowered, press the equipment down-run switch. At this time, the built-in program of the lifting platform will make it move upward. When the locking hook assembly 2 touches the switch knob to the switch contact 1, the equipment stops running. At this time, the operator needs to manually lift the roller assembly 3 to the angle between point B in the extension groove 141 and the locking hook assembly 2, so that the roller assembly 3 is locked. After all the roller assemblies 3 are in place, press the equipment down-run switch again. Since the program has confirmed that there are no objects blocking the switch knob of the lower limit switch 4, the lifting platform will continue to descend until it reaches the lower running end point, and the whole operation is completed.

[0040] This utility model's semi-automatic stop safety mechanism, through the self-weight of the roller assembly 3, the sliding groove 14 on the self-locking plate 12, and the special pushing surface of the locking hook assembly 2, combined with the two relatively moving main bodies of the locking plate seat assembly 1 and the locking hook assembly 2, and with the signals from the lower limit switch 4 and the upper limit switch 5, perfectly completes the process of pushing the roller assembly 3 out from the upper waiting point and letting it slide freely to the lower working area. At the same time, the lower limit switch feeds back to the main control computer, and the locking hook 22 descends and engages the roller assembly 3, etc., thus enabling the lifting platform to perfectly complete the automatic stop operation at the machine position. Furthermore, it greatly reduces human error and improves the safety of the window cleaning machine lifting platform.

[0041] Further reference Figure 2 The present invention provides multiple waist-shaped holes at equal intervals on both sides of the bottom plate 11, and the waist-shaped holes are arranged in a vertical direction.

[0042] It should be noted that the design of the waist-shaped hole allows the locking plate seat assembly 1 to be adjusted to the upper and lower stopping positions according to the on-site conditions during actual installation.

[0043] Further reference Figure 3 , Figure 4 The locking plate seat assembly 1 of this utility model also includes a lower reinforcing plate 15, which is U-shaped, and the upper surface of the lower reinforcing plate 15 is connected to the two self-locking plates 12.

[0044] It should be noted that the lower reinforcing plate 15 adopts a U-shaped design to ensure the stability of the locking plate assembly 1 structure.

[0045] Further reference Figure 5 The present invention provides multiple waist-shaped holes at equal intervals on both sides of the bottom plate 21 of the lock hook, and the waist-shaped holes are arranged in a horizontal direction.

[0046] It should be noted that the design of the waist-shaped hole allows the locking hook assembly 2 to be adjusted left and right during actual installation, depending on the fit between it and the locking plate seat assembly 1 on site.

[0047] Further reference Figure 6In this invention, an adjusting pad 23 is connected to the side of the lock hook base plate 21 away from the lock hook 22. The number of adjusting pads 23 can be increased or decreased according to the on-site installation conditions to control the mating clearance between the lock plate seat assembly 1 and the lock hook assembly 2.

[0048] Further reference Figure 1 , Figure 7 The locking plate seat assembly 1 of this utility model also includes guide rods 16, and two guide rods 16 are vertically connected to the upper reinforcing plate 13; the C-shaped handle 36 is sleeved on one of the guide rods 16.

[0049] It should be noted that the guide rod 16 restricts the movement space of the C-shaped handle 36 in the roller assembly 3, thereby ensuring that the roller assembly 3 will not be interfered with when it slides down due to the presence of the C-shaped handle 36. On the contrary, with the C-shaped handle 36, when the equipment needs to be lowered, when the locking hook assembly 2 moves upward and triggers the upper limit switch 5 to stop, the operator can lift the roller assembly 3 to the corresponding position by hand by lifting the C-shaped handle 36, so that the roller assembly 3 enters the ready position state.

[0050] As can be seen from the above description, the advantages of this utility model are:

[0051] This utility model discloses a semi-automatic stop safety mechanism for a window cleaning machine lifting platform. Through the self-weight of the roller assembly, the sliding groove on the self-locking plate, and the special pushing surface of the locking hook assembly, combined with the two relatively moving main bodies—the locking plate seat assembly and the locking hook assembly—and with the signals from the lower and upper limit switches, it perfectly completes the process of pushing the roller assembly out from the upper waiting point and allowing it to slide freely to the lower working area. Simultaneously, the lower limit switch feeds back to the main control computer, triggering a series of actions such as the locking hook descending and engaging the roller assembly. This allows the lifting platform to perfectly complete the automatic stop operation at the machine position, greatly reducing human error and improving the safety of the window cleaning machine lifting platform.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A semi-automatic parking brake mechanism for a window cleaning machine lift platform, characterized by, It includes a locking plate seat assembly (1), a locking hook assembly (2), a roller assembly (3), a lower limit switch (4), and an upper limit switch (5); The locking plate assembly (1) includes a base plate (11), a self-locking plate (12), and an upper reinforcing plate (13). The self-locking plates (12) are vertically connected to the left and right sides of the base plate (11). A through groove (14) is provided on the self-locking plate (12). The groove (14) is U-shaped. An extension groove (141) extending forward is provided at the upper end of the groove (14). The upper reinforcing plate (13) is vertically connected to the upper end of the base plate (11). The lower part of the upper reinforcing plate (13) is connected to the two self-locking plates (12). The upper limit switch (5) is connected to the upper part of the upper reinforcing plate (13). The switch knob of the upper limit switch (5) is located in front of the extension groove (141). The roller assembly (3) includes a main shaft (31), a flanged copper sleeve (32), a spacer (33), a baffle (34), a screw and nut assembly (35), and a C-shaped handle (36). The main shaft (31) is cylindrical, and the spacer (33) is placed in the middle of the main shaft (31). The flanged copper sleeves (32) are respectively fitted at both ends of the spacer (33). The baffles (34) are fixed to both ends of the main shaft (31) with screw and nut assemblies (35). The C-shaped handles (36) are welded and fixed to the outside of the two baffles (34). The main shaft (31) is located between the two self-locking pieces (12), and the flanged copper sleeve (32) is slidably locked in the groove (14); The lower limit switch (4) is connected to one of the self-locking pieces (12), and the switch knob of the lower limit switch (4) is located at the lower port of the slide (14). The locking hook assembly (2) includes a locking hook base plate (21) and a locking hook (22), with the locking hook (22) vertically connected to the middle of the locking hook base plate (21).

2. A semi-automatic park lock mechanism for a sash glazing machine lift platform as defined in claim 1, wherein, Multiple waist-shaped holes are evenly spaced at both sides of the bottom plate (11), and the waist-shaped holes are arranged in a vertical direction.

3. A semi-automatic park lock mechanism for a sash glazing machine lift platform as defined in claim 1 wherein, The locking plate assembly (1) also includes a lower reinforcing plate (15), which is U-shaped and connected to the top of the two self-locking plates (12).

4. A semi-automatic park lock mechanism for a sash glazing machine lift platform as defined in claim 1 wherein, Multiple waist-shaped holes are provided at equal intervals on both sides of the bottom plate (21) of the lock hook, and the waist-shaped holes are arranged in a horizontal direction.

5. A semi-automatic park lock mechanism for a sash glazing machine lift platform as defined in claim 1 wherein, An adjusting pad (23) is attached to the side of the bottom plate (21) away from the lock hook (22).

6. A semi-automatic park lock mechanism for a sash glazing machine lift platform as defined in claim 1 wherein, The locking plate assembly (1) also includes a guide rod (16), two of which are vertically connected to the upper reinforcing plate (13), and the C-shaped handle (36) is fitted onto one of the guide rods (16).

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