A hand elevator

Abstract

The present application provides an escalator, which belongs to the technical field of elevators, and includes a step assembly, a power unit, a step transmission mechanism, an elevator handrail frame, an elevator handrail belt, a pressing head, a pressing mechanism, a gear transmission mechanism and a synchronous transmission mechanism. The elevator handrail frame has a T-shaped guide rail. The elevator handrail belt is sleeved on the outer side of the T-shaped guide rail, and the elevator handrail belt is provided with a T-shaped groove, and the groove side wall of the T-shaped groove is provided with a first tooth-shaped portion. The pressing head is connected to the pressing mechanism, and the pressing mechanism is used to drive the pressing head to press down into the T-shaped groove to tighten the elevator handrail belt. The gear transmission mechanism is arranged on the pressing head, and the gear transmission mechanism includes a power input gear and a first power output gear, and the first power output gear is used to mesh with the first tooth-shaped portion when the pressing head tightens the elevator handrail belt. The power input gear is connected to the power unit through a synchronous transmission mechanism. The elevator handrail belt and the pressing head will not slip, which effectively avoids the hysteresis of the elevator handrail.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to an escalator. Background Art

[0002] To ensure the safety of passengers, the movement speed of the elevator handrail of the escalator needs to be faster than or equal to the movement speed of the steps. At present, the movement of the elevator handrail is generally driven by the power unit to drive the pulley to rotate, and the rotation of the pulley drives the elevator handrail to move. However, the elevator handrail will gradually wear out as the use time increases, and the elevator handrail and the pulley will slip, causing the speed of the elevator handrail to gradually slow down. The running speed of the elevator handrail is slower than the movement speed of the steps. The lag of the elevator handrail can easily cause passengers to lean back and cause accidents. Summary of the invention

[0003] The embodiment of the present application provides an escalator to improve the problem that the handrail of the existing escalator is prone to lag as the use time increases.

[0004] The embodiment of the present application provides an escalator, including a step assembly, a power unit, a step transmission mechanism, an elevator handrail frame, an elevator handrail belt, a pressing head, a pressing mechanism, a gear transmission mechanism and a synchronous transmission mechanism;

[0005] The power unit is connected to the step assembly through the step transmission mechanism;

[0006] The elevator handrail frame has a T-shaped guide rail;

[0007] The elevator handrail is sleeved on the outer side of the T-shaped guide rail, the elevator handrail is provided with a T-shaped slot for the T-shaped guide rail to be inserted into, and the side wall of the T-shaped slot is provided with a first toothed portion;

[0008] The pressing head is connected to the pressing mechanism, and the pressing mechanism is used to drive the pressing head to press down into the T-shaped groove to tighten the elevator handrail;

[0009] The gear transmission mechanism is arranged on the pressing head, and the gear transmission mechanism comprises a power input gear and a first power output gear, wherein the first power output gear is used to mesh with the first toothed portion when the pressing head tightens the elevator handrail belt;

[0010] The power input gear is transmission-connected to the power unit via the synchronous transmission mechanism.

[0011] In the above technical solution, the elevator handrail can be tightened by driving the down-pressing head downward through the down-pressing mechanism, ensuring that the elevator handrail will not fall off during the movement around the T-shaped guide rail. When the down-pressing head enters the T-slot of the elevator handrail and tightens the elevator handrail, the first power output gear of the down-pressing head will mesh with the first toothed portion, and the power of the power unit will be transmitted to the elevator handrail through the synchronous transmission mechanism and the gear transmission mechanism in turn, thereby driving the elevator handrail to move. Since the elevator handrail and the down-pressing head realize force transmission through the meshing of the first toothed portion and the first power output gear, the elevator handrail and the down-pressing head will not slip, effectively avoiding the lag of the elevator handrail. This structure can ensure that the movement speed of the elevator handrail is always equal to or greater than the movement speed of the steps.

[0012] Further, the pressing head comprises a base, a first side shift block and a pressing block;

[0013] The base is connected to the pressing mechanism, and the power input gear is rotatably arranged on the base;

[0014] The first side shift block and the pressing block are both movably disposed on the base, and the first power output gear is rotatably disposed on the first side shift block;

[0015] When the pressing mechanism drives the pressing head downward, the pressing block can move upward relative to the base after contacting the bottom wall of the T-shaped groove, so as to drive the first side shift block to drive the first power output gear to move laterally in the T-shaped groove, so that the first power output gear engages with the first toothed portion.

[0016] In the above technical solution, when the pressing mechanism drives the pressing head to press down, after the pressing block contacts the bottom wall of the T-slot, the pressing block moves upward relative to the base, and the pressing block drives the first side shift block to move, thereby driving the first power output gear to move laterally in the T-slot, thereby achieving the meshing of the first power output gear with the first toothed portion. This structure ensures that when the pressing head enters the T-slot of the elevator handrail, the first power output gear will not interfere with the elevator handrail, so that the first power output gear can more conveniently mesh with the first toothed portion inside the elevator handrail.

[0017] Furthermore, the pressing head further comprises a first elastic return member and a second elastic return member;

[0018] The first elastic reset member is arranged between the lower pressing block and the base;

[0019] The second elastic reset member is arranged between the first lateral displacement block and the base.

[0020] In the above technical solution, a first elastic reset member is provided between the lower pressing block and the base body, and the first elastic reset member can make the lower pressing block automatically extend downward when the lower pressing head is lifted. A second elastic reset member is provided between the first measuring block and the base body, and the second elastic reset member can make the first side displacement block automatically reset when the lower pressing block extends downward.

[0021] Further, the pressing block has a first guiding inclined surface for pushing the first side shift block to move sideways;

[0022] The first side shift block has a second guide slope for contacting the first guide slope.

[0023] In the above technical solution, the arrangement of the first guiding slope on the lower pressing block and the second guiding slope on the first lateral displacement block facilitates the transmission of force between the lower pressing block and the first lateral displacement block, so that the force applied by the lower pressing block to the first lateral displacement block for lateral movement is smaller.

[0024] Further, the first side shift block has a downward pressing surface for abutting against the bottom wall of the T-shaped groove;

[0025] When the downward pressing surface abuts against the bottom wall of the T-shaped groove, the first power output gear meshes with the first toothed portion.

[0026] In the above technical solution, when the downward pressing surface of the first side displacement block contacts the bottom wall of the T-shaped groove during the downward pressing process of the downward pressing head, the first power output gear engages with the first toothed portion. At this time, the bottom wall of the T-shaped groove can no longer push the downward pressing block to move upward, and the first side displacement block no longer moves sideways.

[0027] Furthermore, the gear transmission mechanism further comprises a second power output gear, and a second tooth-shaped portion arranged opposite to the first tooth-shaped portion is provided on the groove side wall of the T-shaped groove;

[0028] The pressing head further comprises a second side shift block, which is movably arranged on the base body, and the pressing block is located between the first side shift block and the second side shift block;

[0029] When the pressing mechanism drives the pressing head downward, the pressing block can move upward relative to the base after contacting the bottom wall of the T-shaped groove, so as to drive the first side shift block and the second side shift block to respectively drive the first power output gear and the second power output gear to move to opposite sides in the T-shaped groove, so that the first power output gear and the second power output gear are respectively engaged with the first tooth-shaped portion and the second tooth-shaped portion.

[0030] In the above technical solution, a second tooth-shaped portion is provided on the side wall of the T-shaped groove, which is arranged opposite to the first tooth-shaped portion. After the first tooth-shaped portion and the second tooth-shaped portion of the first power output gear are respectively meshed with the second tooth-shaped portion, the power of the first power output gear can be transmitted to both sides of the elevator handrail through the first power output gear and the second power output gear, so that the elevator handrail moves more smoothly.

[0031] Further, the gear transmission mechanism also includes a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear and a seventh gear;

[0032] The first gear and the second gear are rotatably connected to the first side shift block via the same first rotating shaft, and the first gear is meshed with the first power output gear;

[0033] The third gear is rotatably disposed on the base, the third gear is meshed with the power input gear, and the second gear is used to mesh with the third gear when the first power output gear is meshed with the first toothed portion;

[0034] The fourth gear and the fifth gear are rotationally connected to the second side shift block via the same second rotating shaft, and the fourth gear is meshed with the second power output gear;

[0035] The sixth gear and the seventh gear are both rotatably arranged on the base, the sixth gear is meshed with the power input gear, the seventh gear is meshed with the sixth gear, and the fifth gear is used to mesh with the seventh gear when the second power output gear is meshed with the second toothed portion.

[0036] In the above technical solution, the power of the power input gear can be transmitted to the first toothed portion of the elevator handrail belt through the third gear, the second gear, the first gear and the first power output gear in sequence; the power of the power input gear can also be transmitted to the second toothed portion of the elevator handrail belt through the seventh gear, the sixth gear, the fifth gear, the fourth gear and the second power output gear in sequence. That is, the rotation of the power input gear can cause traction on both sides of the elevator handrail belt, thereby causing the elevator handrail belt to move.

[0037] Further, the pressing mechanism comprises a frame, a first connecting rod, a second connecting rod and a driving member;

[0038] The frame, the first connecting rod, the lower pressure head and the second connecting rod are hinged in sequence to form a parallelogram mechanism;

[0039] The driving member is used for driving the first connecting rod to rotate relative to the frame.

[0040] In the above technical solution, the frame, the first connecting rod, the pressing head and the second connecting rod are hinged in sequence to form a parallelogram mechanism. The pressing head can be pressed down or lifted by driving the first connecting rod to rotate relative to the frame by the driving member. The structure is simple. During the pressing process, the pressing head moves in a plane and always remains parallel to the frame.

[0041] Further, the driving member is a driving handle fixedly connected to the first connecting rod;

[0042] The pressing mechanism further comprises a locking device for locking the driving handle and the frame.

[0043] In the above technical solution, the driving member is a driving handle fixedly connected to the first connecting rod, and the operator can shake the driving handle to rotate the first connecting rod relative to the bracket, thereby pressing down or lifting the pressing head. After the pressing head enters the T-slot of the elevator handrail and tightens the elevator handrail, the driving handle and the frame are locked by the locking device to keep the elevator handrail in a tightened state, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A schematic diagram of the structure of an escalator provided in an embodiment of the present application;

[0046] Figure 2 for Figure 1 AA view shown;

[0047] Figure 3 A schematic diagram of the structure of a downward pressure head tightening an elevator handrail provided in an embodiment of the present application;

[0048] Figure 4 A schematic diagram of the structure of the separation of the down-pressure head and the elevator handrail provided in the embodiment of the present application;

[0049] Figure 5 A transmission schematic diagram of a synchronous transmission mechanism, a gear transmission mechanism and an elevator handrail provided in an embodiment of the present application;

[0050] Figure 6 A schematic diagram of the connection between the pressing mechanism and the pressing head provided in an embodiment of the present application.

[0051] Icons: escalator 200; step assembly 10; step 11; power unit 20; step transmission mechanism 30; first small sprocket 31; second small sprocket 32; first large sprocket 33; second large sprocket 34; first synchronous wheel 35; second synchronous wheel 36; first chain 37; second chain 38; first synchronous belt 39; elevator handrail frame 40; T-shaped guide rail 41; elevator handrail belt 50; T-shaped groove 51; first tooth-shaped portion 511; second tooth-shaped portion 512; pressing head 60; base 61; protrusion 611; first end face 612; second end face 613; first side displacement block 62; second guide inclined surface 621; pressing surface 622; pressing block 63; first guide inclined surface 631; third guide inclined surface 632; second side displacement block 64; fourth guide inclined surface 641; The first guide rod 65; the second guide rod 66; the first elastic return member 67; the second elastic return member 68; the third elastic return member 69; the third guide rod 71; the limit portion 711; the pressing mechanism 80; the frame 81; the first connecting rod 82; the second connecting rod 83; the driving member 84; the locking device 85; the gear transmission mechanism 90; the power input gear 91; the first power output gear 92; the second power output gear 93; the first gear 94; the second gear 95; the third gear 96; the fourth gear 97; the fifth gear 98; the sixth gear 99; the seventh gear 101; the first rotating shaft 102; the second rotating shaft 103; the synchronous transmission mechanism 110; the third synchronous wheel 111; the fourth synchronous wheel 112; the first bevel gear 113; the second bevel gear 114; the second synchronous belt 115. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0056] Example

[0057] Combination Figure 1 and Figure 2 The embodiment of the present application provides an escalator 200, including a step assembly 10, a power unit 20, a step transmission mechanism 30, an elevator handrail frame 40, an elevator handrail belt 50, a pressing head 60, and a pressing mechanism 80 ( Figure 1 and Figure 2 Not shown), gear transmission mechanism 90 ( Figure 1 and Figure 2 (not shown) and a synchronous transmission mechanism 110.

[0058] The power unit 20 is connected to the step assembly 10 through the step transmission mechanism 30. The elevator handrail frame 40 has a T-shaped guide rail 41. The elevator handrail belt 50 is sleeved on the outer side of the T-shaped guide rail 41. The elevator handrail belt 50 is provided with a T-shaped slot 51 for the T-shaped guide rail 41 to be inserted, and the groove side wall of the T-shaped slot 51 is provided with a first toothed portion 511. The pressing head 60 is connected to the pressing mechanism 80, and the pressing mechanism 80 is used to drive the pressing head 60 to press down into the T-shaped slot 51 to tighten the elevator handrail belt 50. The gear transmission mechanism 90 is provided on the pressing head 60, and the gear transmission mechanism 90 includes a power input gear 91 and a first power output gear 92. The first power output gear 92 is used to mesh with the first toothed portion 511 when the pressing head 60 tightens the elevator handrail belt 50. The power input gear 91 is connected to the power unit 20 through the synchronous transmission mechanism 110.

[0059] The elevator handrail 50 can be tightened by driving the pressing head 60 downward through the pressing mechanism 80, so as to ensure that the elevator handrail will not fall off during the movement around the T-shaped guide rail 41. When the pressing head 60 enters the T-shaped groove 51 of the elevator handrail 50 and tightens the elevator handrail 50, the first power output gear 92 of the pressing head 60 will mesh with the first toothed portion 511, and the power of the power unit 20 is transmitted to the elevator handrail 50 through the synchronous transmission mechanism 110 and the gear transmission mechanism 90 in turn, thereby driving the elevator handrail 50 to move. Since the elevator handrail 50 and the pressing head 60 are meshed through the first toothed portion 511 and the first power output gear 92 to achieve force transmission, the elevator handrail 50 and the pressing head 60 will not slip, and the hysteresis of the elevator handrail is effectively avoided. This structure can ensure that the movement speed of the elevator handrail 50 is always equal to or greater than the movement speed of the step 11.

[0060] Exemplarily, the power unit 20 is an electric motor.

[0061] like Figure 1 As shown, the motor and the step transmission mechanism 30 are both mounted on the frame 81 ( Figure 1 Continue to refer to Figure 1 The step transmission mechanism 30 includes a first small sprocket 31, a second small sprocket 32, a first large sprocket 33, a second large sprocket 34, a first synchronous wheel 35, a second synchronous wheel 36, a first chain 37, a second chain 38 and a first synchronous belt 39. The first synchronous wheel 35 is arranged on the output shaft of the motor, the first small sprocket 31, the second small sprocket 32, the first large sprocket 33, the second large sprocket 34 and the second synchronous wheel 36 are all rotatably connected to the frame 81, the first small sprocket 31, the second synchronous wheel 36 and the first large sprocket 33 are coaxially arranged, the second small sprocket 32 ​​and the second large sprocket 34 are coaxially arranged, the first synchronous wheel 35 and the second synchronous wheel 36 are connected by the first synchronous belt 39, the first small sprocket 31 and the second small sprocket 32 ​​are connected by the first chain 37, and the first large sprocket 33 and the second large sprocket 34 are connected by the second chain 38. The step assembly 10 includes a plurality of steps 11, and the first chain 37 and the second chain 38 are both connected to the steps 11. When the motor rotates, the first synchronous belt 39 will drive the second synchronous wheel 36 and the first small sprocket 31 to rotate together, so that the first chain 37 moves, thereby driving each step 11 to move, and of course, the second chain 38 will also move together with the first chain 37.

[0062] Furthermore, if Figure 3 and Figure 4As shown, the pressing head 60 includes a base 61, a first lateral displacement block 62 and a pressing block 63. The base 61 is connected to the pressing mechanism 80, and the power input gear 91 is rotatably arranged on the base 61. The first lateral displacement block 62 and the pressing block 63 are both movably arranged on the base 61, and the first power output gear 92 is rotatably arranged on the first lateral displacement block 62. When the pressing mechanism 80 drives the pressing head 60 to press down, the pressing block 63 can move upward relative to the base 61 after contacting the bottom wall of the T-shaped groove 51, so as to drive the first lateral displacement block 62 to drive the first power output gear 92 to move laterally in the T-shaped groove 51, so that the first power output gear 92 is engaged with the first toothed portion 511.

[0063] When the pressing mechanism 80 drives the pressing head 60 to press down, after the pressing block 63 contacts the bottom wall of the T-slot 51, the pressing block 63 moves upward relative to the base 61, and the pressing block 63 drives the first side shift block 62 to move, thereby driving the first power output gear 92 to move laterally in the T-slot 51, so as to achieve the meshing of the first power output gear 92 with the first toothed portion 511. This structure ensures that when the pressing head 60 enters the T-slot 51 of the elevator handrail 50, the first power output gear 92 will not interfere with the elevator handrail 50, so that the first power output gear 92 can more conveniently mesh with the first toothed portion 511 inside the elevator handrail 50.

[0064] Furthermore, the gear transmission mechanism 90 further includes a second power output gear 93, and a second toothed portion 512 disposed opposite to the first toothed portion 511 is disposed on the side wall of the T-shaped groove 51;

[0065] The pressing head 60 further includes a second lateral displacement block 64, which is movably disposed on the base 61, and the pressing block 63 is located between the first lateral displacement block 62 and the second lateral displacement block 64;

[0066] When the pressing mechanism 80 drives the pressing head 60 to press downward, the pressing block 63 can move upward relative to the base 61 after contacting the bottom wall of the T-slot 51, so as to drive the first side shift block 62 and the second side shift block 64 to respectively drive the first power output gear 92 and the second power output gear 93 to move to opposite lateral directions in the T-slot 51, so that the first power output gear 92 and the second power output gear 93 are respectively engaged with the first toothed portion 511 and the second toothed portion 512.

[0067] A second toothed portion 512 is provided on the side wall of the T-shaped groove 51, which is arranged opposite to the first toothed portion 511. After the first toothed portion 511 and the second toothed portion 512 of the first power output gear 92 and the second power output gear 93 are respectively meshed, the power of the first power output gear 92 can be transmitted to both sides of the elevator handrail 50 through the first power output gear 92 and the second power output gear 93, so that the elevator handrail 50 moves more smoothly.

[0068] The cross section of the base 61 is a T-shaped structure. The base 61 has a protrusion 611 for inserting into the T-slot 51 of the elevator handrail 50. The protrusion 611 has a first end face 612 and a second end face 613 arranged in parallel. The distance between the first end face 612 and the second end face 613 is slightly smaller than the width of the opening of the T-slot 51, that is, the protrusion 611 can be smoothly inserted into the T-slot 51.

[0069] The first side shift block 62 is movably disposed on the protruding portion 611, and a first guide rod 65 is provided on the protruding portion 611 for lateral movement of the first side shift block 62. The moving direction of the first side shift block 62 is perpendicular to the first end surface 612. The second side shift block 64 is movably disposed on the protruding portion 611, and a second guide rod 66 is provided on the protruding portion 611 for lateral movement of the second side shift block 64. The moving direction of the second side shift block 64 is perpendicular to the second end surface 613.

[0070] The first side shift block 62 and the second side shift block 64 are both L-shaped structures. The first power output gear 92 is rotatably connected to the first side shift block 62 via a rotating shaft, and the second power output gear 93 is connected to the second side shift block 64 via another rotating shaft.

[0071] In addition, the lower pressing block 63 further includes a first elastic reset member 67, a second elastic reset member 68 and a third elastic reset member 69. The first elastic reset member 67 is arranged between the lower pressing block 63 and the base 61, and the first elastic reset member 67 can make the lower pressing block 63 automatically extend downward when the lower pressing head 60 is lifted; the second elastic reset member 68 is arranged between the first side displacement block 62 and the base 61, and the second elastic reset member 68 can make the first side displacement block 62 automatically reset when the lower pressing block 63 extends downward; the third elastic reset member 69 is arranged between the second displacement block and the base 61, and the third elastic reset member 69 can make the second side displacement block 64 automatically reset when the lower pressing block 63 extends downward.

[0072] The lower pressing block 63 is connected to the third guide rod 71. The base 61 is provided with a hole for the third guide rod 71 to move. A section of the third guide rod 71 away from the lower pressing block 63 is provided with a limit portion 711. The limit portion 711 is located above the upper surface of the base 61, and the lower pressing block 63 is located below the lower surface of the base 61. The third guide rod 71 is located between the first side displacement block 62 and the second side displacement block 64.

[0073] Exemplarily, the first elastic reset member 67, the second elastic reset member 68 and the third elastic reset member 69 are all springs, the first elastic reset member 67 is sleeved on the outside of the third guide rod 71, the second elastic reset member 68 is sleeved on the outside of the first guide rod 65, and the third elastic reset member 69 is sleeved on the outside of the second guide rod 66. Figure 4As shown, under natural conditions, under the action of the second elastic reset member 68, the limiting portion 711 on the third guide rod 71 abuts against the upper surface of the base 61. In this case, the lower pressing block 63 and the third guide rod 71 can move upward, but cannot move downward. Under natural conditions, the first side shift block 62 and the second side shift block 64 are both in a retracted state, the first power output gear 92 does not exceed the first end face 612 of the protruding portion 611, and the second power output gear 93 does not exceed the second end face 613 of the protruding portion 611. In this case, the first power output gear 92 and the second power output gear 93 will not hinder the protruding portion 611 from entering the T-slot 51 of the elevator handrail 50.

[0074] Further, the pressing block 63 has a first guiding inclined surface 631 for pushing the first side shifting block 62 to move laterally; the first side shifting block 62 has a second guiding inclined surface 621 for contacting the first guiding inclined surface 631. The pressing block 63 has a third guiding inclined surface 632 for pushing the second side shifting block 64 to move laterally; the second side shifting block 64 has a fourth guiding inclined surface 641 for contacting the third guiding inclined surface 632.

[0075] In the above technical solution, the arrangement of the first guiding bevel 631 on the lower pressing block 63 and the second guiding bevel 621 on the first lateral displacement block 62 facilitates the transmission of force between the lower pressing block 63 and the first lateral displacement block 62, so that the force applied by the lower pressing block 63 to the first lateral displacement block 62 required for the lateral movement of the first lateral displacement block 62 is smaller. Similarly, the arrangement of the third guiding bevel 632 on the lower pressing block 63 and the fourth guiding bevel 641 on the second lateral displacement block 64 facilitates the transmission of force between the lower pressing block 63 and the second lateral displacement block 64, so that the force applied by the lower pressing block 63 to the second lateral displacement block 64 required for the lateral movement of the second lateral displacement block 64 is smaller.

[0076] In addition, the first side shift block 62 has a pressing surface 622 for abutting against the bottom wall of the T-shaped slot 51 ; when the pressing surface 622 abuts against the bottom wall of the T-shaped slot 51 , the first power output gear 92 meshes with the first toothed portion 511 .

[0077] When the pressing head 60 is in the pressing process, the pressing surface 622 of the first side displacement block 62 contacts the bottom wall of the T-shaped slot 51, and the first power output gear 92 meshes with the first toothed portion 511. At this time, the bottom wall of the T-shaped slot 51 cannot continue to push the pressing block 63 upward, and the first side displacement block 62 no longer moves sideways. The downward pressure applied by the pressing mechanism 80 to the base 61 can be transmitted to the elevator handrail 50 through the first side displacement block 62, thereby tightening the elevator handrail 50.

[0078] The lower surface of the first side shift block 62 is the downward pressing surface 622. In addition, the lower surface of the second side shift block 64 is coplanar with the downward pressing surface 622 of the first side shift block 62.

[0079] like Figure 3 As shown, when the pressing mechanism 80 drives the pressing head 60 to gradually press down into the T-slot 51 of the elevator handrail 50, the lower surface of the first side displacement block 62 (the pressing surface 622) and the lower surface of the second side displacement block 64 finally abut against the bottom wall of the T-slot 51. At this time, the first power output gear 92 extends beyond the first end face 612 of the protrusion 611 and meshes with the first toothed portion 511, and the second power output gear 93 extends beyond the second end face 613 of the protrusion 611 and meshes with the second toothed portion 512.

[0080] Furthermore, if Figure 5 As shown, the gear transmission mechanism 90 further includes a first gear 94 , a second gear 95 , a third gear 96 , a fourth gear 97 , a fifth gear 98 , a sixth gear 99 and a seventh gear 101 .

[0081] The first gear 94 and the second gear 95 are rotatably connected to the first side shift block 62 through the same first rotating shaft 102, and the first gear 94 is meshed with the first power output gear 92. The third gear 96 is rotatably arranged on the base 61, and the third gear 96 is meshed with the power input gear 91. The second gear 95 is used to mesh with the third gear 96 when the first power output gear 92 is meshed with the first toothed portion 511. The fourth gear 97 and the fifth gear 98 are rotatably connected to the second side shift block 64 through the same second rotating shaft 103, and the fourth gear 97 is meshed with the second power output gear 93. The sixth gear 99 and the seventh gear 101 are both rotatably arranged on the base 61, the sixth gear 99 is meshed with the power input gear 91, the seventh gear 101 is meshed with the sixth gear 99, and the fifth gear 98 is used to mesh with the seventh gear 101 when the second power output gear 93 is meshed with the second toothed portion 512.

[0082] The power of the power input gear 91 can be transmitted to the first toothed portion 511 of the elevator handrail 50 through the third gear 96, the second gear 95, the first gear 94 and the first power output gear 92 in sequence; the power of the power input gear 91 can also be transmitted to the second toothed portion 512 of the elevator handrail 50 through the sixth gear 99, the seventh gear 101, the fifth gear 98, the fourth gear 97 and the second power output gear 93 in sequence. That is, the rotation of the power input gear 91 can cause traction on both sides of the elevator handrail 50, thereby moving the elevator handrail 50.

[0083] Among them, the radius and module of the first power output gear 92 and the second power output gear 93 are equal; the radius and module of the second gear 95 and the fifth gear 98 are equal; the radius and module of the first gear 94 and the fourth gear 97 are equal; the radius and module of the third gear 96, the sixth gear 99 and the seventh gear 101 are equal.

[0084] Combination Figure 1and Figure 4 The synchronous transmission mechanism 110 includes a third synchronous wheel 111, a fourth synchronous wheel 112, a first bevel gear 113, a second bevel gear 114 and a second synchronous belt 115. The third synchronous wheel 111 is fixed to the output shaft of the motor, the fourth synchronous wheel 112 and the first bevel gear 113 are rotatably connected to the base 61 through the same rotating shaft, the third synchronous wheel 111 and the fourth synchronous wheel 112 are connected through the second synchronous belt 115, the second bevel gear 114 and the power input gear 91 are rotatably connected to the base 61 through the same rotating shaft, and the second bevel gear 114 is meshed with the first bevel gear 113. When the motor is working, the power of the output shaft of the motor will be transmitted to the power input gear 91 of the gear transmission mechanism 90 through the above-mentioned synchronous transmission mechanism 110, so that the first power output gear 92 and the second power output gear 93 rotate in opposite directions, and finally the elevator handrail 50 moves.

[0085] It should be noted that, in other embodiments, the elevator handrail 50 only has the first toothed portion 511. In this case, the second power output gear 93, the fourth gear 97, the fifth gear 98, the sixth gear 99 and the seventh gear 101 in the gear transmission mechanism 90 can be removed.

[0086] Furthermore, if Figure 6 As shown, the pressing mechanism 80 includes a frame 81, a first connecting rod 82, a second connecting rod 83 and a driving member 84. The frame 81, the first connecting rod 82, the pressing head 60 and the second connecting rod 83 are hinged in sequence to form a parallelogram mechanism; the driving member 84 is used to drive the first connecting rod 82 to rotate relative to the frame 81.

[0087] The pressing head 60 can be pressed down or lifted up by driving the first connecting rod 82 to rotate relative to the frame 81 through the driving member 84. The structure is simple. During the pressing process, the pressing head 60 moves in a plane and always remains parallel to the frame 81.

[0088] The first connecting rod 82 and the second connecting rod 83 are both hinged to the base body 61 of the pressing head 60 .

[0089] Optionally, the driving member 84 is a driving handle fixedly connected to the first connecting rod 82 , and the pressing mechanism 80 further includes a locking device 85 for locking the driving handle to the frame 81 .

[0090] The operator can shake the driving handle to rotate the first connecting rod 82 relative to the bracket, thereby pressing down or lifting the pressing head 60. After the pressing head 60 enters the T-slot 51 of the elevator handrail 50 and tightens the elevator handrail 50, the driving handle and the frame 81 are locked by the locking device 85 to keep the elevator handrail 50 in a tightened state, and the operation is simple and convenient.

[0091] Exemplarily, the locking device 85 is a locking screw, which is screwed onto the driving handle. Tightening the locking screw so that the locking screw squeezes the frame 81 locks the driving handle; loosening the locking screw so that the locking screw separates from the frame 81 loosens the driving handle, and at this time, the driving handle can be used to drive the first connecting rod 82 to rotate.

[0092] It should be noted that, in other embodiments, the driving member 84 may also be an electric element, for example, the driving member 84 includes a driving motor and a worm gear reducer, the output shaft of the driving motor is connected to the input shaft of the worm gear reducer, the output shaft of the worm gear reducer is connected to the hinge shaft of the first connecting rod 82 and the frame 81, and the hinge shaft is fixed to the first connecting rod 82 and can rotate relative to the frame 81. The rotation of the driving motor will drive the first connecting rod 82 to rotate. After the driving motor stops, due to the irreversible power transmission characteristic of the worm gear reducer, even if the pressing head 60 is subjected to the tightening force of the elevator handrail 50, it cannot drive the first connecting rod 82 to rotate. In other words, after the driving motor works to rotate the first connecting rod 82 and tighten the elevator handrail 50 with the pressing head 60, the driving motor stops and the pressing head 60 is kept in the position of tightening the elevator handrail 50.

[0093] In this embodiment, there are two first connecting rods 82 and two second connecting rods 83, and the two first connecting rods 82 are respectively located on both sides of the base 61 ( Figure 3 and Figure 4 As shown in FIG. 6 , the two second connecting rods 83 are respectively located on both sides of the base body 61 .

[0094] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An escalator, characterized in that: include: Step assembly; Power unit; A step transmission mechanism, wherein the power unit and the step assembly are transmission-connected via the step transmission mechanism; An elevator handrail frame, wherein the elevator handrail frame has a T-shaped guide rail; An elevator handrail, wherein the elevator handrail is sleeved on the outer side of a T-shaped guide rail, the elevator handrail is provided with a T-shaped slot for the T-shaped guide rail to be inserted into, and a first toothed portion is provided on a side wall of the T-shaped slot; Down pressure head; A pressing mechanism, the pressing head is connected to the pressing mechanism, and the pressing mechanism is used to drive the pressing head to press down into the T-shaped groove to tighten the elevator handrail; a gear transmission mechanism, the gear transmission mechanism being arranged on the pressing head, the gear transmission mechanism comprising a power input gear and a first power output gear, the first power output gear being used for meshing with the first toothed portion when the pressing head tightens the elevator handrail; and A synchronous transmission mechanism, wherein the power input gear is connected to the power unit through transmission via the synchronous transmission mechanism; The pressing head comprises a base, a first lateral displacement block and a pressing block; the base is connected to the pressing mechanism, and the power input gear is rotatably arranged on the base; the first lateral displacement block and the pressing block are both movably arranged on the base, and the first power output gear is rotatably arranged on the first lateral displacement block; when the pressing mechanism drives the pressing head downward, the pressing block can move upward relative to the base after contacting the bottom wall of the T-shaped groove, so as to drive the first lateral displacement block to drive the first power output gear to move laterally in the T-shaped groove, so that the first power output gear is engaged with the first toothed portion; the pressing head also comprises a first elastic reset member and a second elastic reset member; the first elastic reset member is arranged between the pressing block and the base; the second elastic reset member is arranged between the first lateral displacement block and the base; the first lateral displacement block has a pressing surface for abutting against the bottom wall of the T-shaped groove; when the pressing surface abuts against the bottom wall of the T-shaped groove, the first power output gear is engaged with the first toothed portion.

2. The escalator according to claim 1, characterized in that: The pressing block has a first guiding inclined surface for pushing the first side shift block to move sideways; The first side shift block has a second guide slope for contacting the first guide slope.

3. The escalator according to claim 1, characterized in that: The gear transmission mechanism further includes a second power output gear, and a second tooth-shaped portion arranged opposite to the first tooth-shaped portion is provided on the side wall of the T-shaped groove; The pressing head further comprises a second side shift block, which is movably arranged on the base body, and the pressing block is located between the first side shift block and the second side shift block; When the pressing mechanism drives the pressing head downward, the pressing block can move upward relative to the base after contacting the bottom wall of the T-shaped groove, so as to drive the first side shift block and the second side shift block to respectively drive the first power output gear and the second power output gear to move to opposite sides in the T-shaped groove, so that the first power output gear and the second power output gear are respectively engaged with the first tooth-shaped portion and the second tooth-shaped portion.

4. The escalator according to claim 3, characterized in that: The gear transmission mechanism further includes a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear and a seventh gear; The first gear and the second gear are rotatably connected to the first side shift block via the same first rotating shaft, and the first gear is meshed with the first power output gear; The third gear is rotatably disposed on the base, the third gear is meshed with the power input gear, and the second gear is used to mesh with the third gear when the first power output gear is meshed with the first toothed portion; The fourth gear and the fifth gear are rotationally connected to the second side shift block via the same second rotating shaft, and the fourth gear is meshed with the second power output gear; The sixth gear and the seventh gear are both rotatably arranged on the base, the sixth gear is meshed with the power input gear, the seventh gear is meshed with the sixth gear, and the fifth gear is used to mesh with the seventh gear when the second power output gear is meshed with the second toothed portion.

5. The escalator according to claim 1, characterized in that: The pressing mechanism comprises a frame, a first connecting rod, a second connecting rod and a driving member; The frame, the first connecting rod, the lower pressure head and the second connecting rod are hinged in sequence to form a parallelogram mechanism; The driving member is used for driving the first connecting rod to rotate relative to the frame.

6. The escalator according to claim 5, characterized in that: The driving member is a driving handle fixedly connected to the first connecting rod; The pressing mechanism further comprises a locking device for locking the driving handle and the frame.

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