Elevator balancing device

Abstract

The present invention discloses an elevator balancing device, comprising a first traction sheave, a first steel wire rope being slidably connected to the first traction sheave, a second pulley being provided at the lower left side of the first traction sheave, and the second pulley being slidably connected to the first steel wire rope, a first pulley being installed at the bottom of the second pulley, a first pulley being provided at the lower right side of the first traction sheave, and the first pulley being slidably connected to the first steel wire rope, a first spring being installed at the bottom of the first pulley, and replacing the compensation chain or the counterweight block by the spring to solve the problem of the counterweight of the elevator, and replacing the counterweight block by the spring to avoid the problem of more serious waste of counterweight materials as the tonnage of the elevator increases, thereby saving a large amount of precious materials. At the same time, by adding a locking device at the bottom of the spring, the counterweight of the elevator can be temporarily changed by the locking device during power outage rescue, thereby reducing the difficulty of power outage rescue.

Description

Technical Field

[0001] The present invention relates to the field of elevators, and in particular to an elevator balancing device. Background Art

[0002] An elevator is a permanent transportation device that serves specific floors within a building, with its car running on at least two rows of rigid rails perpendicular to the horizontal plane or inclined at an angle of less than 15 degrees to the plumb line. There are also stepped types, with treads mounted on tracks and running continuously, commonly known as escalators or moving walkways. Fixed lifting equipment that serves specific floors. Vertical elevators have a car that runs between at least two rows of rigid guide rails that are perpendicular or inclined at an angle of less than 15 degrees. The size and structure of the car facilitate passenger entry and exit and loading and unloading of goods. Elevators are generally used as a general term for vertical transportation vehicles within a building, regardless of their drive method.

[0003] This application is an improvement on the existing technology. In the existing technology, conventional elevators use heavy objects such as iron and lead as counterweights on the counterweight side to balance the weight on the car side. This solution forces these precious industrial materials to become "dead weights", resulting in low material utilization efficiency. Moreover, the larger the elevator tonnage, the more serious the material waste. When an elevator needs to perform a power outage rescue, a power outage rescue device is required to drive the entire elevator, including all parts on the traction car side and the counterweight side. This places high demands on battery energy storage and power output units, and the larger the elevator tonnage, the higher the requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an elevator balancing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An elevator balancing device includes a first traction sheave, a first steel wire rope is slidably connected to the first traction sheave, a second pulley is provided below the left side of the first traction sheave, and the second pulley is slidably connected to the first steel wire rope, a first pulley is installed at the bottom of the second pulley, a first pulley is provided below the right side of the first traction sheave, and the first pulley is slidably connected to the first steel wire rope, and a first spring is installed at the bottom of the first pulley.

[0007] As a further solution of the present invention: the balancing device also includes a second traction sheave, a second steel wire rope is slidably connected to the second traction sheave, a fourth pulley is provided at the lower left side of the second traction sheave, and the fourth pulley is slidably connected to the second steel wire rope, a second car is installed at the bottom of the fourth pulley, a third pulley is provided at the lower right side of the second traction sheave, and the third pulley is slidably connected to the second steel wire rope, a counterweight is installed at the bottom of the third pulley, the bottom of the second car and the counterweight are fixedly connected to a second spring, and the bottom of the second spring is fixedly connected to a locking device.

[0008] As a further solution of the present invention: the locking device includes a fixed seat, the inner wall of the fixed seat is slidably connected to a connecting plate, and the connecting plate is fixedly connected to the second spring, the bottom of the connecting plate is fixedly connected to a third spring, and the other end of the third spring is fixedly connected to the bottom inner wall of the fixed seat, both sides of the connecting plate are fixedly connected to a movable block, and the movable block is slidably connected to the fixed seat, the inner wall of the movable block is slidably connected to a guide rod fixedly connected to the fixed seat, and a card rod is slidably connected to the guide rod, and a card slot is provided on the side of the movable block away from the connecting plate, and the card slot is adapted to the card rod.

[0009] As a further solution of the present invention: guide grooves are provided on both sides of the fixing seat, the guide rods are fixedly connected to the inner walls of the guide grooves, and the inner walls of the guide grooves are slidably connected to the movable blocks.

[0010] As a further solution of the present invention: a mounting groove is provided on the guide rod, the inner wall of the mounting groove is slidably connected to the clamping rod, one end of the clamping rod extending into the guide rod is fixedly connected to a vertical plate, a fourth spring is fixedly connected to the vertical plate, and the other end of the fourth spring is fixedly connected to the inner wall of the mounting groove.

[0011] As a further solution of the present invention: one end of the card rod extending into the card slot is abutted against a push rod, the outer wall of the push rod is slidably connected to a symmetrically distributed limit plate, and the limit plate is fixedly connected to the inner wall of the card slot, a fixing ring is provided between the two groups of limit plates, and the fixing ring is fixedly sleeved on the outer wall of the push rod.

[0012] The present invention has the following beneficial effects:

[0013] In the present invention, the counterweight problem of the elevator is solved by replacing the compensation chain or the counterweight by the spring. The counterweight is replaced by the spring, thereby avoiding the problem that the larger the tonnage of the elevator, the more serious the waste of counterweight materials, and saving a large amount of precious materials. At the same time, by adding a locking device to the bottom of the spring, the counterweight of the elevator can be temporarily changed by the locking device during power outage rescue, reducing the difficulty of power outage rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a structural schematic diagram of an elevator balancing device proposed by the present invention;

[0015] Figure 2 This is a schematic diagram of the installation of the second spring of an elevator balancing device proposed by the present invention;

[0016] Figure 3 This is a schematic diagram of the installation of a locking device for an elevator balancing device proposed by the present invention;

[0017] Figure 4 A schematic diagram of a general low-rise elevator structure in the prior art of an elevator balancing device proposed by the present invention;

[0018] Figure 5 A schematic diagram of a general low-rise elevator structure in the prior art of an elevator balancing device proposed by the present invention;

[0019] Figure 6 This is a structural schematic diagram of a locking device for an elevator balancing device proposed by the present invention;

[0020] Figure 7 For the present invention Figure 6 A is an enlarged structural diagram of FIG.

[0021] Legend:

[0022] First steel wire rope 1, first traction sheave 2, first pulley 3, second pulley 4, first car 5, first spring 6, second steel wire rope 7, second traction sheave 8, third pulley 9, fourth pulley 10, second car 11, counterweight 12, second spring 13, locking device 14, fixed seat 15, connecting plate 16, third spring 17, guide groove 18, guide rod 19, movable block 20, fourth spring 21, clamping rod 22, push rod 23, limit plate 24, fixing ring 25, clamping groove 26. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] Reference Figure 1 The present invention provides an elevator balancing device, including a first traction sheave 2, characterized in that: a first steel wire rope 1 is slidably connected to the first traction sheave 2, a second pulley 4 is provided at the lower left side of the first traction sheave 2, and the second pulley 4 is slidably connected to the first steel wire rope 1, a first pulley 3 is installed at the bottom of the second pulley 4, a first pulley 3 is provided at the lower right side of the first traction sheave 2, and the first pulley 3 is slidably connected to the first steel wire rope 1, and a first spring 6 is installed at the bottom of the first pulley 3.

[0027] like Figure 4 As shown, a counterweight is installed at the bottom of the first pulley 3, and the weight of the first car 5 and the counterweight are in a reasonable proportional relationship. The first car includes GA and GB, and the counterweight includes GC. GA represents the weight of the passengers, GB represents the weight of the first car 5 itself, and GC represents the weight of the counterweight. When the passengers are fully loaded, (GA+GB) / GC=reasonable value is satisfied, and when the passengers are empty, GC / (GA+GB)=reasonable value is satisfied. The reasonable value can be set to 40% to 45%. At this time, the counterweight mainly plays the role of counterweight, balancing the weight on the car side.

[0028] like Figure 1As shown, one end of one set of first springs 6 is connected to the first car and the other end is connected to the ground. (A first spring 6 may also be present at the bottom below the first car 5, which is not shown in the figure.) Another set of first springs 6 is connected to the first pulley 3 at one end and to the ground at the other end. An extreme case that meets the use requirements is obtained, where only the first springs 6 are used to completely replace the counterweight. At this time, the weight of the counterweight is zero. The stretching range of the first spring is △L, the shortest length of the first spring 6 that meets the reasonable counterweight requirement is L, the longest length of the first spring 6 that meets the reasonable counterweight requirement is (L+△L), and the elastic coefficient of the first spring 6 is V. A case that meets the two reasonable use limits.

[0029] (GA+GB) / (L+△L)*V=reasonable value, when there are no passengers and the first car 5 is at the bottom floor;

[0030] (L+ΔL)*V / (GA+GB)=reasonable value, at which time the first elevator car 5 is fully loaded with passengers and is located at the top floor.

[0031] ΔL is the floor area where the first car 5 can operate normally.

[0032] Through the above solution, a reasonable operating range is obtained, and the effect of the first spring 6 replacing the counterweight block is achieved in the low-floor elevator.

[0033] Example 2

[0034] The balancing device also includes a second traction sheave 8, to which a second steel wire rope 7 is slidingly connected. A fourth pulley 10 is provided at the lower left side of the second traction sheave 8, and the fourth pulley 10 is slidingly connected to the second steel wire rope 7. A second car 11 is installed at the bottom of the fourth pulley 10, and a third pulley 9 is provided at the lower right side of the second traction sheave 8, and the third pulley 9 is slidingly connected to the second steel wire rope 7. A counterweight 12 is installed at the bottom of the third pulley 9, and the bottom of the second car 11 and the counterweight 12 are fixedly connected to a second spring 13, and the bottom of the second spring 13 is fixedly connected to a locking device 14.

[0035] In this embodiment, if Figure 5As shown, a compensating chain connects the second car 11 and the counterweight 12, located beneath the counterweight 12. In elevators located on higher floors, the car and counterweight can move farther apart. The weight of the second wire ropes 7 on each side is the primary cause of counterweight imbalance between the car and counterweight sides. For example, if the second car 11 is located on the top floor and the counterweight 12 is located on the bottom floor, the car side consists of the second car 11 and the wire ropes, while the counterweight side consists of the counterweight 12 and the wire ropes. The weight of the counterweight is significantly greater than that of the car. The compensating chain is connected to the counterweight 12 and below the first car 11, respectively, and moves with the car and counterweight. When the car side has fewer wire ropes than the counterweight, the car side has more compensating chain than the counterweight, offsetting the counterweight imbalance caused by the wire ropes.

[0036] like Figure 2 As shown, a second spring 13 is connected at one end to the first car 11 and at the other end to the ground. Another set of second springs 13 is connected at one end to the counterweight 12 and at the other end to the ground. The tension generated by the elastic stretching of the two sets of second springs 13 is selected to be equivalent to the gravity generated by the second steel rope 7 stretched to the same length. The tension of the two sets of second springs 13 can replace the compensation chain to offset the counterweight imbalance caused by the second steel rope 7.

[0037] Through the above solution, an effect of replacing the compensation chain 4 with two sets of second springs 13 is achieved.

[0038] The usage process of this embodiment includes the following steps:

[0039] Step S1: one or more elastic objects are connected to the counterweight side and / or the car side at one end and to the ground or wall at the other end;

[0040] Step S2: The elevator moves upward, the weight on the car side decreases, the tension of the elastic member on the car side increases or remains unchanged, the weight on the counterweight side increases, and the tension of the elastic member on the counterweight side decreases;

[0041] In step S3, the elevator goes down, the weight on the car side increases, the tension of the elastic material on the car side decreases or remains unchanged, the weight on the counterweight side decreases, and the tension of the elastic material on the counterweight side increases.

[0042] Through the above steps, the elastic material acts as a counterweight according to the effect of the elastic material's stretching on the car side and / or the counterweight side. As the elevator moves up and down, the elastic material also stretches and contracts to compensate for any imbalance in the counterweight.

[0043] Example 3

[0044] The locking device 14 includes a fixed seat 15, the inner wall of the fixed seat 15 is slidably connected to a connecting plate 16, and the connecting plate 16 is fixedly connected to the second spring 13, the bottom of the connecting plate 16 is fixedly connected to a third spring 17, and the other end of the third spring 17 is fixedly connected to the bottom inner wall of the fixed seat 15, both sides of the connecting plate 16 are fixedly connected to a movable block 20, and the movable block 20 is slidably connected to the fixed seat 15, the inner wall of the movable block 20 is slidably connected to a guide rod 19 fixedly connected to the fixed seat 15, and a card rod 22 is slidably connected to the guide rod 19, and a card slot 26 is provided on the side of the movable block 20 away from the connecting plate 16, and the card slot 26 is adapted to the card rod 22, and both sides of the fixed seat 15 are provided with a card slot 26. There is a guide groove 18, a guide rod 19 is fixedly connected to the inner wall of the guide groove 18, and the inner wall of the guide groove 18 is slidably connected to the movable block 20, a mounting groove is opened on the guide rod 19, the inner wall of the mounting groove is slidably connected to the card rod 22, one end of the card rod 22 extending into the guide rod 19 is fixedly connected to a vertical plate, a fourth spring 21 is fixedly connected to the vertical plate, and the other end of the fourth spring 21 is fixedly connected to the inner wall of the mounting groove, and one end of the card rod 22 extending into the slot 26 is abutted against a push rod 23, and the outer wall of the push rod 23 is slidably connected to a symmetrically distributed limit plate 24, and the limit plate 24 is fixedly connected to the inner wall of the slot 26, a fixing ring 25 is provided between the two groups of limit plates 24, and the fixing ring 25 is fixedly sleeved with the outer wall of the push rod 23.

[0045] like Figure 3 As shown, in Figure 4 or Figure 3 The lower ends of the first spring 6 and the second spring 13 are provided with a locking device 14. The lower end of the second spring 13 is also connected to the ground or the wall through the third spring 17.

[0046] like Figure 3 As shown, (only the second car 11 is used as an example in the figure) the ground is connected to the first spring 6 or the second spring 13 through a locking device 15. The third spring 17 is connected to the second spring 13, and the length of the third spring 17 is sufficient for the second car 11 to move a full floor.

[0047] When an elevator rescue is needed, the elevator is parked and unable to move, and the downward forces on the counterweight and car sides are equal. By disconnecting the locking device 15 on the counterweight side, the third spring 17 is tightened, the second spring 13 contracts, the tension is reduced, and the counterweight becomes unbalanced. The elevator brake is opened, and the second car 11 moves downward under the action of gravity until it reaches the floor, allowing passengers to exit the second car 11, and the rescue is successful.

[0048] Similarly, the locking device 15 is set on the car side. By disconnecting the locking device 15 on the car side, the contraction tension of the second spring 13 on the car side is reduced, helping the second car 11 to move upward until the rescue is successful.

[0049] Through the above solution, a counterweight effect is obtained by changing the first spring 6 or the second spring 13 by stretching, which is beneficial to elevator rescue, so that the car moves to the level position under its own gravity.

[0050] The usage process of this embodiment includes the following steps:

[0051] Step S1: one or more elastic objects are connected to the counterweight side and / or the car side at one end and to the ground or wall at the other end;

[0052] Step S2: The lower end of the elastic object is connected to the ground or wall via a locking device; the lower end of the elastic object is further connected to the ground or wall via a flexible object; one end of the flexible object is connected to the ground or wall, and the other end is connected to the lower end of the elastic object;

[0053] Step S3: The elevator stops and only the bottom latch of the counterweight side elastic member is disconnected, thereby reducing the tension of the counterweight side elastic member.

[0054] Step S4, open the brake and move the car side downward;

[0055] Step S5: The elevator stops, and only the bottom latch of the car side elastic member is disconnected, thereby reducing the tension of the car side elastic member.

[0056] Step 6: Open the brake and move the car sideways upward.

[0057] By artificially changing the stretching degree of the elastic material, the counterweight balance between the counterweight side and the car side is changed, and the elevator car is moved using its own gravity to help the elevator rescue to the level position.

[0058] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0059] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An elevator balancing device, comprising a traction sheave, wherein a steel wire rope is slidably connected to the traction sheave, a second pulley is provided below the left side of the traction sheave, the second pulley is slidably connected to the steel wire rope, a car is mounted on the bottom of the second pulley, a first pulley is provided below the right side of the traction sheave, the first pulley is slidably connected to the steel wire rope, a counterweight is mounted on the bottom of the first pulley, The bottom of the car and the bottom of the counterweight are respectively installed with springs, and the springs are respectively connected to the ground through a locking device. The tension generated by the elastic stretching of the springs is equivalent to the weight of the steel wire rope with the same stretching length. The locking device includes a fixed seat, the inner wall of the fixed seat is slidably connected to a connecting plate, the upper end of the connecting plate is fixedly connected to the spring, the bottom of the connecting plate is fixedly connected to a third spring, the other end of the third spring is fixedly connected to the bottom inner wall of the fixed seat, and the length of the third spring is sufficient for the car to move a whole floor.

2. The elevator balancing device according to claim 1, wherein movable blocks are fixedly connected on both sides of the connecting plate, the movable block is slidably connected to the fixed seat, the inner wall of the movable block is slidably connected to a guide rod fixedly connected to the fixed seat, a card rod is slidably connected to the guide rod, and a card slot is provided on the side of the movable block away from the connecting plate, and the card slot is adapted to the card rod.

3. The elevator balancing device according to claim 2, wherein guide grooves are provided on both sides of the fixed seat, the guide rod is fixedly connected to the inner wall of the guide groove, and the inner wall of the guide groove is slidably connected to the movable block.

4. An elevator balancing device according to claim 2, wherein a mounting groove is provided on the guide rod, the inner wall of the mounting groove is slidably connected to the clamping rod, one end of the clamping rod extending into the guide rod is fixedly connected to a vertical plate, a fourth spring is fixedly connected to the vertical plate, and the other end of the fourth spring is fixedly connected to the inner wall of the mounting groove.

5. An elevator balancing device according to claim 2, wherein one end of the clamping rod extending into the clamping slot is abutted against a push rod, the outer wall of the push rod is slidably connected to a symmetrically distributed limit plate, the limit plate is fixedly connected to the inner wall of the clamping slot, a fixing ring is provided between the two groups of the limit plates, and the fixing ring is fixedly sleeved on the outer wall of the push rod.

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