Elevator weighing structure and elevator

Abstract

The invention provides an elevator weighing structure and an elevator. The elevator weighing structure comprises a rope fixing structure and a distance sensor, and the rope fixing structure comprises a rope hitch fixing assembly, a movable rope hitch plate, a rope hitch spring device and an opposite side rope hitch plate; the rope head fixing assembly comprises a rope head, a rope head screw rod, damping rubber, a preassembled nut and a fastening anti-loosening assembly; the rope head spring device and the rope head screw rod are not collinear; in the height direction, the rope head spring device and the damping rubber are located on the two sides of the movable rope head plate respectively. The distance sensor is used for measuring the distance between the opposite side rope hitch plate and the movable rope hitch plate; according to the invention, the damping rubber is not positioned between the two rope hitch plates, so that the vertical displacement of the movable rope hitch plate is not influenced by the damping rubber, and the measurement mode avoids the interference of nonlinearity and easy aging of the rubber, and can be used for accurately detecting the load of the elevator car.

Description

Technical Field

[0001] The present invention relates to the field of elevators, and more particularly, to an elevator weighing structure and an elevator. Background Art

[0002] An elevator car is usually suspended in a hoistway by ropes. Traditional connection methods are as Figure 17 shown. The end of the rope head is connected to one end of a screw rod. A rope head plate, a shock-absorbing rope head spring, a locking nut, and an opening pin are sequentially arranged on the screw rod. Both ends of the rope head plate are installed on the car top cross beam.

[0003] For such an elevator, there are usually two weighing methods.

[0004] Method 1 is to use a distance sensor to measure the distance between the lower gasket and the rope head plate, and then calculate the weight according to the displacement of the lower gasket. However, this method has the following defects: there is shock-absorbing rubber between the lower gasket and the rope head plate, and the non-linear deformation characteristics of the shock-absorbing rubber itself and the characteristics of gradual aging during long-term use will cause the measured value by the distance sensor to be inaccurate.

[0005] Method 2 is as Figure 18 shown. A weighing sensor is installed between the fixed rope head plate and the movable rope head plate. However, this solution requires a weight sensor, which is relatively costly compared to a distance sensor.

[0006] Therefore, there is currently a lack of a weighing solution that is both economical and can avoid measurement errors caused by non-linear deformation and aging of shock-absorbing rubber. Summary of the Invention

[0007] Aiming at the defects in the prior art, the purpose of the present invention is to provide an elevator weighing structure and an elevator.

[0008] An elevator weighing structure according to the present invention includes a rope fixing structure and a distance sensor. The rope fixing structure includes a rope head fixing assembly, a movable rope head plate, a rope head spring device, and a counter-side rope head plate.

[0009] The rope head fixing assembly includes a rope head, a rope head screw rod, shock-absorbing rubber, a pre-installed nut, and a fastening and anti-loosening assembly.

[0010] The rope head is installed at one end of the rope head screw rod, and the other end of the rope head screw rod sequentially passes through the pre-installed nut, the movable rope head plate, the shock-absorbing rubber, and the fastening and anti-loosening assembly.

[0011] One end of the rope head spring device is installed on the counter-side rope head plate, and the other end is connected to the movable rope head plate.

[0012] Preferably, the rope end spring device and the rope end screw are not collinear; in the height direction, the rope end spring device and the shock-absorbing rubber are respectively located on both sides of the movable rope end plate; the distance sensor is used to measure the distance between the opposite rope end plate and the movable rope end plate;

[0013] The cable includes a steel strip or a wire rope.

[0014] Preferably, the number of the rope end fixing components is the same as the number of the cables, the number of the movable rope end plates is 1, the movable rope end plate includes a flush part and a convex part, the convex part is located between the two flush parts, and the heights of the flush part and the convex part are different; a rope end screw hole is provided on the convex part, and rope end spring holes are symmetrically opened on the two flush parts;

[0015] Each rope end spring device includes 1 rope end spring and 1 pre-tightening bolt;

[0016] One end of the rope end spring is fixedly connected to the movable rope end plate, and the other end is fixedly connected to the opposite rope end plate; the pre-tightening bolt passes through the rope end spring hole on the movable rope end plate.

[0017] Preferably, the cable fixing structure further includes a rubber end seat, and the rubber end seat is arranged between the shock-absorbing rubber and the fastening and anti-loosening component.

[0018] Preferably, the rope end spring device further includes spring end seats, and 2 spring end seats are installed between the opposite rope end plate and the flush part of each rope end spring device, and the 2 spring end seats are respectively fixedly connected to the opposite rope end plate and the movable rope end plate;

[0019] The rope end spring is sleeved on the spring end seat, one end of the rope end spring is fixedly connected to the movable rope end plate through one spring end seat, and the other end is fixedly connected to the opposite rope end plate through the other spring end seat.

[0020] The two spring end seats are arranged up and down, wherein the upper spring end seat is provided with a threaded hole, and the lower spring end seat is provided with a through hole;

[0021] After passing through the rope end spring, the pre-tightening bolt is screwed into the threaded hole of the spring end seat fixed to the opposite rope end plate.

[0022] Preferably, the rope end is installed inside the car top of the elevator. At this time, the opposite rope end plate is fixed to the car top cross beam of the car of the elevator; the opposite rope end plate is the upper rope end plate.

[0023] Preferably, the rope end is installed in the elevator shaft. At this time, the opposite rope end plate is fixed to the wall, that is, the opposite rope end plate is the fixed rope end plate;

[0024] The movable rope end plate is connected to the car through a rope end screw, a rope end and a cable.

[0025] Preferably, the fastening and anti-loosening assembly includes a rope head nut, a locking nut and a split pin;

[0026] The rope head nut, the locking nut and the split pin are arranged in sequence. The rope head nut and the locking nut are both sleeved on the rope head screw, and the split pin penetrates through the rope head screw.

[0027] An elevator according to the present invention adopts the elevator weighing structure described above.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, since the total load-bearing of the rope head spring is the same as the total weight of the car, and the up and down displacement of the movable rope head plate is equal to the deformation amount of the rope head spring, therefore, the load of the car can be detected by detecting the position of the movable rope head plate, so as to be used to determine the pre-torque of the main machine before the elevator starts and limit overloading, that is, the load of the elevator can be calculated by detecting the distance between the opposite rope head plate and the movable rope head plate. More importantly, in the present invention, the shock-absorbing rubber is not located between the two rope head plates, so the up and down displacement of the movable rope head plate is not affected by the shock-absorbing rubber. Therefore, the measurement method of the present invention avoids the interference of the nonlinearity and easy aging of the rubber, can be used to accurately detect the load of the elevator car, and the present invention still uses a displacement sensor instead of a weight sensor, which has the characteristics of low cost and high economy.

[0030] 2. For the rope fixing structure in the present invention, the movable rope head plate includes a flat part and a convex part with different heights, and the rope head spring and the shock-absorbing rubber are respectively located at the flat part and the convex part, that is, in the height direction, the rope head spring and the shock-absorbing rubber are located on the opposite sides of the movable rope head plate; in the horizontal direction, the rope head spring and the shock-absorbing rubber are arranged in a staggered manner; thereby the overall height can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

[0032] Figure 1 It is a schematic top view structure diagram of the elevator in the present invention;

[0033] Figure 2 It is a schematic partial side view structure diagram of the elevator in the present invention;

[0034] Figure 3 It is a schematic top view structure diagram of the frame column in the present invention;

[0035] Figure 4 It is a schematic top view structure diagram of the car column in the present invention;

[0036] Figure 5 Schematic structural view of the frame column and car column in the present invention;

[0037] Figure 6 Schematic structural view of the counterweight structure and frame column in the present invention;

[0038] Figure 7 Schematic structural view of the cable fixing structure in the present invention, wherein the cable end is installed inside the car top;

[0039] Figure 8 Schematic structural view of the cable fixing structure in the present invention, wherein the cable end is installed inside the elevator hoistway;

[0040] Figure 9 Schematic structural view of the elevator when the cable end is installed inside the car top;

[0041] Figure 10 Schematic structural view of the elevator when the cable end is installed inside the elevator hoistway;

[0042] Figure 11 Schematic structural view of the main machine base and elevator car top in the present invention;

[0043] Figure 12 Schematic structural view of the main machine base in the present invention;

[0044] Figure 13 Schematic structural view of the car top;

[0045] Figure 14 Schematic structural view of the car top without showing the decorative panel;

[0046] Figure 15 Schematic structural view of the front frame column in the present invention;

[0047] Figure 16 Front frame column of the prior art;

[0048] Figure 17 Schematic structural view of the prior art in which an elevator car is usually suspended in a hoistway by cables;

[0049] Figure 18 Schematic structural view of the prior art in which a weighing sensor is used to measure the weight of the car. Shown in the figure:

[0050]

[0051] Detailed implementation manners

[0052] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0053] The present invention provides an elevator weighing structure, including a cable fixing structure and a distance sensor. The cable fixing structure, as Figures 7 - 8 shown, includes a rope head fixing assembly, a movable rope head plate 602, a rope head spring device, and a counter-side rope head plate 609; the rope head fixing assembly includes a rope head 600, a rope head screw 601, a shock-absorbing rubber 603, a pre-installed nut 608, and a fastening and anti-loosening assembly; the rope head 600 is installed at one end of the rope head screw 601, and the other end of the rope head screw 601 sequentially passes through the pre-installed nut 608, the movable rope head plate 602, the shock-absorbing rubber 603, and the fastening and anti-loosening assembly; one end of the rope head spring device is installed on the counter-side rope head plate 609, and the other end is connected to the movable rope head plate 602; in one embodiment, the rope head spring device and the rope head screw 601 are not collinear, and in another embodiment, the rope head spring device and the rope head screw 601 are collinear. Preferably, they are not collinear; in the height direction, the rope head spring device and the shock-absorbing rubber 603 are respectively located on both sides of the movable rope head plate 602. The distance sensor is used to measure the distance between the counter-side rope head plate 609 and the movable rope head plate 602; the cable includes a steel belt or a steel wire rope.

[0054] Specifically, the cable fixing structure includes a rope head fixing assembly, a movable rope head plate 602, a rope head spring device, and a counter-side rope head plate 609; the number of the rope head fixing assemblies is the same as the number of cables, the number of the movable rope head plates 602 is 1, the movable rope head plate 602 includes a flat portion 6021 and a convex portion 6022, the convex portion 6022 is located between the two flat portions 6021, the flat portion 6021 and the convex portion 6022 are at different heights, a rope head screw hole is provided on the convex portion 6022, and rope head spring holes are symmetrically opened on the two flat portions 6021; the rope head fixing assembly includes a rope head 600, a rope head screw 601, a shock-absorbing rubber 603, a pre-installed nut 608, and a fastening and anti-loosening assembly;

[0055] One side of the rope end 600 is connected to the cable to transmit the load, and the other side is fixedly connected to the rope end screw 601. The end of the rope end screw 601 sequentially passes through the pre-installed nut 608, the rope end screw hole on the movable rope end plate 602, and the shock-absorbing rubber 603, and the end position and anti-loosening are maintained by the fastening and anti-loosening assembly. Specifically, the fastening and anti-loosening assembly includes a rope end nut 605, a locking nut 606, and an opening pin 607. The rope end nut 605, the locking nut 606, and the opening pin 607 are arranged in sequence. The rope end nut 605 and the locking nut 606 are both sleeved on the rope end screw 601, and the opening pin 607 penetrates through the rope end screw 601.

[0056] The rope end spring device is located between the opposite side rope end plate 609 and the flush portion 6021, and the number thereof is 2 or an even number, and the even number of rope end spring devices are symmetrically arranged. Each rope end spring device includes 1 rope end spring 610 and 1 pre-tightening bolt 612. One end of the rope end spring 610 is fixedly connected to the movable rope end plate 602, and the other end is fixedly connected to the opposite side rope end plate 609. The pre-tightening bolt 612 passes through the rope end spring hole on the movable rope end plate 602 and the rope end spring 610. The cable is a steel strip or a steel wire rope.

[0057] The cable fixing structure further includes a rubber end seat 604, and the rubber end seat 604 is arranged between the shock-absorbing rubber 603 and the fastening and anti-loosening assembly.

[0058] The rope end spring device further includes spring end seats 611. Each rope end spring device is provided with 2 spring end seats 611 between the opposite side rope end plate 609 and the flush portion 6021, and the 2 spring end seats 611 are respectively fixedly connected to the opposite side rope end plate 609 and the movable rope end plate 602. The rope end spring 610 is sleeved on the spring end seats 611. One end of the rope end spring 610 is fixedly connected to the movable rope end plate 602 through a spring end seat 611, and the other end is fixedly connected to the opposite side rope end plate 609 through another spring end seat 611. The two spring end seats 611 are arranged vertically. The spring end seat 611 located at the upper part is provided with a threaded hole, and the spring end seat 611 located at the lower part is provided with a through hole. After the pre-tightening bolt 612 passes through the rope end spring 610, it is screwed into the threaded hole of the spring end seat 611 fixed to the opposite side rope end plate 609.

[0059] The cable fixing structure can also be provided with a scale for checking the spring compression amount.

[0060] In a preferred example, referring to Figure 7 and Figure 9 as shown, the rope end 600 is installed inside the car top. At this time, the opposite side rope end plate 609 is fixed to the car top cross beam of the car of the external elevator, that is, the opposite side rope end plate 609 is the upper rope end plate. In another preferred example, referring toFigure 8 As shown in Figure 10 Figure 8 , the rope end 600 is installed in the elevator hoistway. At this time, the opposite side rope end plate 609 is fixed to the wall 613, that is, the opposite side rope end plate 609 is a fixed rope end plate; the movable rope end plate 602 is connected to the car through the rope end screw 601, the rope end 600 and the cable 506.

[0061] In the present invention, in the horizontal direction, the rope end spring 610 with a relatively large height and other fixing components including the rope end 600, the rope end screw 601, the shock-absorbing rubber 603, the rubber end seat 604, the rope end nut 605, the locking nut 606, and the split pin 607 are arranged in a staggered manner. Therefore, the rope end spring 610 does not occupy the height dimension of the fixing components, thereby reducing the overall height of the fixing structure, and further reducing the requirement for the top floor height of the elevator hoistway. In addition, the surface of the movable rope end plate for installing rubber and spring is designed as a stepped structure in the height direction (that is, the heights of the flush part 6021 and the convex part 6022 are different), further reducing the overall height of the fixing structure except the rope end 600. Therefore, except for the rope end 600, other fixing structures can be hidden in the car top, greatly improving the aesthetics of the car top.

[0062] In the elevator weighing structure provided by the present invention, one end of the rope end spring 610 is fixedly connected to the movable rope end plate, and the other end is fixedly connected to the opposite side rope end plate 609 fixed to the car top or the wall. This design makes the position of the movable rope end plate directly correspond to the compression amount of the rope end spring and is not affected by the compression amount of the shock-absorbing rubber 603, avoiding the interference of the non-linearity and easy aging of the rubber. Therefore, it can be used to accurately detect the load of the elevator car. In a preferred example, the pre-installed nut and pre-tightening bolt of the present invention are used to pre-press and combine the rope end fixing components, the movable rope end plate 602, the rope end spring device, and the opposite side rope end plate 609 into a component in the factory. After the rope end bears the load during on-site installation, the pre-tightening force of the pre-installed nut and pre-tightening bolt naturally disappears and does not need to be removed.

[0063] The present invention also provides an elevator, adopting the elevator weighing structure as described above, and further including a track frame 1 and a car 2. Refer to Figure 1 , 2 and Figures 3 - 6 ; the car 2 is directly connected to the track frame 1, and the car 2 can move along the height direction of the track frame 1.

[0064] The track frame 1 includes frame columns 11, and car guide rails 112 extend from the frame columns 11; the frame columns 11 and the car guide rails 112 can be integrally formed. The car 2 is a single-layer structure for accommodating and bearing loads. Specifically, the car 2 includes a bottom plate 22 and car columns 21; the bottom plate 22 is connected to the car columns 21, and the bottom plate 22 is used for carrying people and / or goods; a car guiding assembly 3 extends from the car; the car guide rails 112 and the car 2 are connected through the car guiding assembly 3.

[0065] In a preferred example, as Figure 2 With Figure 5 shown, there is an overlapping part between the side projection of the frame column 11 and the side projection of the car column 21. Compared with the prior art solution that requires a separate car frame, since there is no car frame, it is possible to have an overlapping part between the side projection of the frame column and the side projection of the car column, which means that the track frame and the car column are closer, that is, the car can be deeper. In other words, the elevator increases the area of the car by increasing the depth of the car. As Figure 4 shown, the car column 21 includes a car column main body 211 and a car guiding assembly installation position 212;

[0066] In a preferred example, as Figure 5 shown, there is an overlapping part between the side projection of the car guiding assembly 3 and the side projection of the car column 21. The car guiding assembly 3 is a roller structure. Specifically, the car guiding assembly 3 includes a mounting block 31 and car guiding rollers 32. The number of the car guiding rollers 32 is 3. The 3 car guiding rollers 32 are installed in the car guiding assembly installation position 212 through the mounting block 31; two of the car guiding rollers 32 are respectively located on both sides of the car guide rail 112 to clamp the car guide rail 112, and the other guiding roller 32 is arranged perpendicular to the other guiding rollers 32 and abuts against the end face of the car guide rail 112, sticking to the end face of the car guide rail.

[0067] In a preferred example, as Figure 4As shown, the vertical projection of the car column main body 211 is an L-shaped structure, and a column side opening groove group, a column first side nut strip groove 214, a car guiding component installation position 212, a column rear nut strip groove 215, and a column rear opening groove group are sequentially arranged on the car column main body 211; the column side opening groove group includes a first column side opening groove 213 and a column second side nut groove 216, and the column rear opening groove group includes a column first rear opening groove 217 and a column second rear opening groove 218 arranged in parallel. Among them, the car guiding component installation position 212 is located at the corner of the L-shaped structure, and the car guiding component installation position 212 is also an L-shaped structure, and the long side of the L-shaped of the car guiding component installation position 212 is an opening structure, and the first column side opening groove 213 and the column second side nut groove 216 coincide in the width direction; the column first rear opening groove 217 and the column second rear opening groove 218 coincide in the depth direction; the column side opening groove 213 is used for inserting glass or an optoelectronic safety device or installing a fixing bracket; the part of the column second rear opening groove 218 close to the closed end is used for installing a light strip or installing a fixing bracket, and the part close to the opening is used for inserting glass; the column first rear opening groove 217 is used for accommodating a cable. Since the column first rear opening groove 217 is an opening structure, the cable can be pushed flat into the cavity, and compared with threading in a sealed cavity, the installation and maintenance difficulty and working time are significantly reduced (because there are multiple relatively large connectors in the prefabricated cable, and it is easy to get stuck during the threading process). After the glass is installed in the column second rear opening groove 218, an L-shaped cable groove cover plate is inserted, and a glass pressing strip is pressed in, and the cable groove cover plate is fixed and covers the column first rear opening groove 217. Since the car column main body 211 has a relatively large cross-sectional area, main moment of inertia, and bending section modulus, and there are a total of 6 nut strip groove positions for side connection, namely the column second side nut groove 216, the column first side nut strip groove 214, the car guiding component installation position 212, the column rear nut strip groove 215, and the column second rear opening groove 218 (the car guiding component installation position 212 has 1 each in the depth and width directions) on its cross-section, the locking positions are numerous and reasonably distributed, and the locking is firm. Therefore, when it is locked with the car bottom and possibly the car top, the car can directly bear and transfer the load, so a separate car frame is no longer needed, and it can be designed as a very compact single-layer structure.

[0068] The number of the frame columns 11 is one or more, and the number of the car columns 21 is the same as that of the frame columns 11. In a preferred example, as Figure 1As shown, the track frame 1 further includes a track frame body 10; the car 2 further includes a car structure body 20; the number of frame columns 11 is 2, namely a first frame column and a second frame column, and the first frame column and the second frame column are respectively located at two top ends of the circumferential direction of the track frame body 10; and the first frame column and the second frame column are symmetrically arranged with each other; the number of car columns 21 is 2, namely a first car column and a second car column, and the first car column and the second car column are respectively located at two top ends of the circumferential direction of the car structure body 20; and the first car column and the second car column are symmetrically arranged with each other; the first frame column and the first car column are connected by a car guiding assembly 3, and the second frame column and the second car column are connected by another car guiding assembly 3.

[0069] Both the first car column and the second car column are rear columns of the car structure; both the first frame column and the second frame column are rear columns of the track frame 1.

[0070] As Figure 3 As shown, the vertical projection of the frame column 11 is U-shaped, and a counterweight sealing plate groove 101, a light strip groove 102, a counterweight guide wheel groove 103, a first sealing plate or glass installation groove 104, a first splicing nut strip groove 105, a first wire groove 106, a first anti-fastener rotation limiting groove 107, a second wire groove 1061, a second anti-fastener rotation limiting groove 1071, a second splicing nut strip groove 1051, and a second sealing plate or glass installation groove 1041 are sequentially arranged on the frame column 11. The counterweight guide wheel groove 103 is a U-shaped structure. Bolt hole guiding wire grooves 108 are respectively arranged beside the first anti-fastener rotation limiting groove 107 and the second anti-fastener rotation limiting groove 1071. When fixing fasteners by drilling holes along the guiding line on the frame column 11, the bolt head or nut located inside the column will be restricted from rotating by the limiting grooves, so there is no need for additional holding. A first installation and splicing positioning hole 109 is arranged beside the second wire groove 1061, and the first installation and splicing positioning hole 109 is communicated with the second wire groove 1061.

[0071] The car structure body 20 of the car includes a wall plate 23 and a car top, that is, the car 2 is a car composed of car columns 21, a bottom plate 22, a wall plate 23, and a car top. In a preferred example, the wall plate 23 is integrally connected with the car columns 21. At this time, the elevator can be understood as a single-layer load-bearing car capable of withstanding eccentric loads, without a separate car frame. The car guiding assembly 3 can extend from the car columns 21, or can also extend from the bottom plate 22, the wall plate 23, or the car top. In addition, the car can also be suspended by the car top. In this preferred example, the car guide rails 112 are located at two ends on the same side of the car body, and the car guiding assembly 3 is directly fixed at the top, middle, or bottom of the car columns 21. The elevator further includes a light strip, a counterweight sealing plate 7, and a rear sealing plate, asFigure 1 as shown

[0072] As Figure 6 shown, the elevator further includes a counterweight structure 4, and the counterweight guiding assembly 5 is installed on the counterweight structure 4 through a support frame; counterweight guiding assemblies 5 are provided at both ends of the counterweight structure 4. Preferably, the counterweight guiding assembly 5 includes counterweight guiding rollers 51, and the number of the counterweight guiding rollers 51 is two. The two counterweight guiding rollers 51 are arranged perpendicular to each other. One counterweight guiding roller 51 is in contact with the bottom of the counterweight guide groove 103 of the track frame 1, and the other counterweight guiding roller 51 is in contact with both side edges of the counterweight guide groove 103. Due to the U-shaped design of the counterweight guide groove 103, the elevator can realize the guiding in the front and back directions by cooperating with one roller, thereby reducing the requirement for the depth space occupied by the counterweight guiding assembly device.

[0073] Compared with the prior art, in order to expand the volume of the car, the backpack frame is omitted, but the original functions of the backpack frame (such as realizing the up and down movement of the car and bearing and transmitting loads) need to be retained. Therefore, the structure of the car needs to be redesigned, which is extremely difficult.

[0074] As Figures 11 - 12 shown, the elevator further includes a main machine base 700 capable of reducing the top floor height of the elevator shaft. The main machine base 700 is installed in the top structure of the elevator shaft.

[0075] The main machine base 700 is used to carry the elevator main machine 701. The main machine base 700 includes a high part 702, a connecting part 703 and a main machine base recess 704. The height of the high part 702 is higher than that of the main machine base recess 704. The two ends of the connecting part 703 are respectively connected to the high part 702 and the main machine base recess 704;

[0076] The elevator main machine 701 is installed on the top surface of the main machine base recess 704. The width of the main machine base 700 is smaller than the width of the elevator main machine 701. The bottom surface of the main machine base recess 704 is the lowest plane in the top structure of the elevator shaft that coincides with the projection plane of the car.

[0077] As Figure 13 , Figure 14As shown in the figure, the car top 713 of the elevator includes a car top cross beam 705, a first side beam 706, a second side beam 707, and a decorative panel 710. The plane where the upper surface of the beam is located is defined as the upper plane 708, and the plane where the lower surface of the beam is located is defined as the lower plane 709. The car top cross beam 705 is located in the middle of the first side beam 706 and the second side beam 707, and connects the first side beam 706 and the second side beam 707. The car top cross beam 705 divides the space between the first side beam 706 and the second side beam 707 into a first space 711 and an electrical component installation space 712; the decorative panel 710 covers the electrical component installation space 712. The bottom area of the main machine seat recess 704 is smaller than the area of the first space 711.

[0078] As Figure 11 shown in the figure, when the elevator car runs upward to the limit position, the lower plane of the main machine seat recess 704 protrudes into the upper plane of the elevator car top. Specifically, the main machine seat recess 704 protrudes into the first space 711 and can approach the lower plane 709 infinitely downward.

[0079] The matching relationship between the traditional main machine seat and the elevator car top is: when the elevator car runs upward to the limit position, the lowest plane in the shaft top structure that coincides with the projection plane of the car is misaligned in height with the upper plane 708 of the car top, that is, the height where the bottom surface of the existing main machine seat is located is always higher than the height where the upper plane 708 of the car top is located.

[0080] Different from the traditional main machine seat, the bottom surface of the main machine seat recess 704 of the elevator can protrude into the upper plane of the elevator car top. Therefore, when the elevator car runs upward to the limit position, the lowest bottom surface height of the main machine seat in the elevator is lower than the height where the upper plane 708 of the car top is located. Therefore, this design can reduce the minimum top floor height requirement of the elevator. In addition, the width of the shaft top structure sinking downward into the lower plane of the elevator car top + the width of the two side beams of the car top is the limit minimum width of the car. And the width of the main machine seat recess 704 is smaller than that of the main machine. Therefore, this main machine seat can achieve the minimum limit width of the car.

[0081] As Figure 12 shown in the figure, the elevator further includes a front frame column 300. The front frame column 300 includes a column body 301 and a cover plate 302. The column body 301 and the cover plate 302 cooperate with each other. Specifically, the joint part of the cover plate 302 and the column body 301 is a tooth-shaped structure that fits into each other, forming an overall strength after combination. More specifically, a first tooth-shaped connection surface 3015 is provided on the column body 301, and a second tooth-shaped connection surface 3021 is provided on the cover plate 302. The first tooth-shaped connection surface 3015 and the second tooth-shaped connection surface 3021 cooperate with each other. A wire groove cavity 303 is formed inside after the column body 301 and the cover plate 302 are combined.

[0082] The column body 301 includes a first bolt hole guiding wire groove 3011, a second bolt hole guiding wire groove 3012, a third anti-fastener rotation limiting groove 3013, a fourth anti-fastener rotation limiting groove 3014, a second installation and splicing positioning hole 3017, a third splicing nut strip groove 3018, a third sealing plate or glass installation groove 3019, and a protection plate 30191. A screw protection groove 3016 is formed between the protection plate 30191 and the first toothed connection surface 3015. The protection plate 30191 is located between the screw protection groove 3016 and the wire groove cavity 303.

[0083] The cover plate 302 is provided with a third bolt hole guiding wire groove 3022 and a fourth bolt hole guiding wire groove 3023.

[0084] The working principle of the front column of the frame is as follows: When fixing fasteners by drilling holes along the bolt hole guiding wire grooves 3011 and 3012, the bolt heads or nuts located inside the column will be restricted from rotating by the anti-fastener rotation limiting grooves 3013 and 3014, so there is no need for additional gripping. With the cooperation of the third bolt hole guiding wire groove 3022 and the fourth bolt hole guiding wire groove 3023 and bolts, after the cover plate 302 is fixed to the column body 301, the second toothed connection surface 3021 on the cover plate 302 and the first toothed connection surface 3015 on the column body 301 protrude into and engage with each other, and the screw head protruding from the outside of the cover plate 302 into the column body 301 in the direction of the wire groove cavity 303 is blocked by the protection plate 30191, thereby protecting the cables in the wire groove cavity.

[0085] Figure 4 As shown, the front column of the frame is an important structural component of the elevator shaft frame. Especially when the strength of its corner part is insufficient, it will cause the front side of the shaft frame to be easily displaced and reduce the overall stability of the shaft frame. At the same time, the front column of the frame is also the installation foundation for the landing door and call device of each floor of the elevator. Multiple cables such as the door machine drive cable, the door lock safety circuit, and the call cable need to be arranged along the front column of the frame and pass through the front column at different positions on each floor to enter the landing door header and the call device.

[0086] Figure 16An existing-frame front column is shown. Its corner part is a closed cavity, which has good structural strength. When the hoistway wall panel is an opaque material such as a steel plate, an aluminum-plastic plate, or a wooden board, the above-mentioned cable can be arranged along the inner side of the corner part of the frame front column, and a branch cable extends out on each floor. The branch cable passes through the through-hole on the frame front column and enters the landing door header and the call button panel. However, with the development of society, more and more villa owners choose to install an elevator at home and require the elevator to use glass as the hoistway wall panel, that is, the elevator hoistway is an observation hoistway. At this time, if the cable is still installed openly along the inner side of the corner part of the frame front column, the aesthetics of the product will be greatly reduced. Therefore, during the production of the elevator, the above-mentioned cable needs to be pre-installed in sections in the closed cavity of each section of the frame front column in the factory, and joints for docking with the cables in the upper and lower frame front columns are left at the upper and lower ends respectively. During on-site installation, it is necessary to dock the cable joints first and then dock the frame front columns, which is not only cumbersome to install but also impossible to maintain.

[0087] Compared with the traditional frame front column, the frame front column body 301 of the elevator has a wire groove cavity 303 with an open structure, which is very convenient for cable installation and maintenance. At the same time, after the cable installation is completed and the cover plate 302 is closed, the cover plate 302 not only covers the wire groove cavity but also mutually engages with the column body 301 through a toothed structure, ensuring the structural strength.

[0088] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0089] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0090] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0091] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An elevator weighing structure, characterized in that: It comprises a rope fixing structure and a distance sensor, wherein the rope fixing structure comprises a rope head fixing assembly, a movable rope head plate (602), a rope head spring device and an opposite side rope head plate (609); The rope head fixing assembly comprises a rope head (600), a rope head screw (601), a shock absorbing rubber (603), a pre-installed nut (608) and a fastening and anti-loosening assembly; The rope head (600) is installed at one end of the rope head screw (601), and the other end of the rope head screw (601) passes through the pre-installed nut (608), the movable rope head plate (602), the shock-absorbing rubber (603) and the tightening and anti-loosening component in sequence; One end of the rope head spring device is mounted on the opposite rope head plate (609), and the other end is connected to the movable rope head plate (602); In the height direction, the rope head spring device and the shock absorbing rubber (603) are respectively located on both sides of the movable rope head plate (602); the distance sensor is used to measure the distance between the opposite side rope head plate (609) and the movable rope head plate (602); The ropes include steel belts or steel wire ropes.

2. The elevator weighing structure according to claim 1, characterized in that: The rope head spring device and the rope head screw (601) are not colinear.

3. The elevator weighing structure according to claim 1, characterized in that: The number of the rope head fixing components is the same as the number of ropes and cables, the number of the movable rope head plate (602) is 1, the movable rope head plate (602) comprises a flat portion (6021) and a raised portion (6022), the raised portion (6022) is located between the two flat portions (6021), and the flat portion (6021) and the raised portion (6022) are located at different heights; a rope head screw hole is provided on the raised portion (6022), and rope head spring holes are symmetrically provided on the two flat portions (6021); Each rope end spring device comprises a rope end spring (610) and a pre-tightening bolt (612); One end of the rope head spring (610) is fixedly connected to the movable rope head plate (602), and the other end is fixedly connected to the opposite rope head plate (609); the pre-tightening bolt (612) passes through the rope head spring hole on the movable rope head plate (602).

4. The elevator weighing structure according to claim 1, characterized in that: The cable fixing structure further comprises a rubber end seat (604), wherein the rubber end seat (604) is arranged between the shock-absorbing rubber (603) and the fastening and anti-loosening component.

5. The elevator weighing structure according to claim 3, characterized in that: The rope end spring device also includes a spring end seat (611), and each rope end spring device is provided with two spring end seats (611) between the opposite rope end plate (609) and the flush portion (6021), and the two spring end seats (611) are respectively fastened to the opposite rope end plate (609) and the movable rope end plate (602); The rope end spring (610) is sleeved on the spring end seat (611), one end of the rope end spring (610) is fixedly connected to the movable rope end plate (602) via a spring end seat (611), and the other end is fixedly connected to the opposite side rope end plate (609) via another spring end seat (611); The two spring end seats (611) are arranged up and down, wherein the upper spring end seat (611) is provided with a threaded hole, and the lower spring end seat (611) is provided with a through hole; After the pre-tightening bolt (612) passes through the rope head spring (610), it is screwed into the threaded hole of the spring end seat (611) fixed to the opposite rope head plate (609).

6. The elevator weighing structure according to claim 1, characterized in that: The rope head (600) is installed in the car roof of the elevator. At this time, the opposite side rope head plate (609) is fixed on the car roof crossbeam of the elevator car; the opposite side rope head plate (609) is the rope head upper plate.

7. The elevator weighing structure according to claim 1, characterized in that: The rope head (600) is installed in the elevator shaft. At this time, the opposite rope head plate (609) is fixed on the wall (613), that is, the opposite rope head plate (609) is a fixed rope head plate; The movable rope head plate (602) is connected to the car via a rope head screw (601), a rope head (600) and a cable (506).

8. The elevator weighing structure according to claim 1, characterized in that: The fastening and anti-loosening assembly comprises a rope head nut (605), a locking nut (606) and a cotter pin (607); The rope head nut (605), the locking nut (606) and the split pin (607) are arranged in sequence. The rope head nut (605) and the locking nut (606) are both mounted on the rope head screw (601), and the split pin (607) passes through the rope head screw (601).

9. An elevator, characterized in that: An elevator weighing structure as described in any one of claims 1 to 8 is adopted.

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