Counterweight side-drop elevator structure

Abstract

The present invention discloses a counterweight side-drop elevator structure, wherein the traction steel wire rope enters a first pair of re-entry rope wheels arranged at the top rear end of the counterweight through a traction machine wheel and a machine room guide wheel, enters the first counterweight guide wheel after being guided by the first pair of re-entry rope wheels, and is horizontally forwardly transmitted to the second counterweight guide wheel. The second counterweight guide wheel is used to ensure that the traction steel wire rope vertically falls into the second pair of re-entry rope wheels arranged at the top front end of the counterweight, and is finally hung on the counterweight rope head bearing beam. In this arrangement, the traction steel wire rope enters the two counterweight re-entry rope wheels arranged at the upper end of the counterweight from the adjacent side, so that the counterweight position can be moved backward by a distance of the diameter of the counterweight reverse rope wheel, so that the counterweight is placed in the center in the front and rear directions as much as possible, and the counterweight is kept as far away as possible from the car door panel assembly located at the front side of the elevator car, so as to ensure the safety space between the counterweight and the shaft, the elevator car and the car door panel assembly. Even if the traction machine wheel and the machine room guide wheel are not placed tilted, the distance between the counterweight and the car door panel assembly can be greater than the safety distance.

Description

Technical Field

[0001] The invention relates to elevator technology, in particular to a counterweight side-drop elevator structure. Background Art

[0002] The emergence of elevators has greatly facilitated people's riding and transporting goods, reducing manpower and improving people's work efficiency. In order to balance the load and the weight of the car, the elevator needs a matching counterweight system to reduce the load of the elevator traction system and improve safety. The large-load elevators currently in use on the market are generally 2 tons, 3 tons, and 5 tons. Due to the large load, the matching counterweight device is more than twice that of ordinary passenger elevators, but the left and right width and front and back depth of the shaft are limited. Therefore, when the front and back depth of the shaft is insufficient, it is difficult to arrange the counterweight, which has always been a problem that has plagued large-load elevators.

[0003] At present, the common ways to solve the problem of insufficient shaft depth and counterweight arrangement in the market are as follows: Figure 1 , Figure 2 As shown, the car 2 runs up and down along the hoistway 1. In order to compensate for the load of the car 2, the elevator is equipped with a counterweight 4. The counterweight 4 and the car 2 move relative to each other in the hoistway 1, so a certain safety distance must be maintained, which must not be less than 50mm. The placement of the counterweight 4 should avoid interfering with the operation of the car door panel assembly 3. The traction machine wheel 7 and the machine room guide wheel 8 above the counterweight 4 should be tilted, and the traction machine base 11 should be tilted on the load-bearing beam 10. This arrangement not only increases the difficulty of positioning the load-bearing beam 10, the traction machine and other components, but also increases the difficulty of installing related components in the elevator machine room. When the front-to-back depth of the hoistway 1 is small, the traction machine is too tilted and cannot meet the installation conditions. Figure 3 As shown, one end of the traction wire rope 14 is fixed on the traction wheel 7. Under the condition of ensuring the counterweight distance, the traction wire rope 14 enters the counterweight re-entering rope sheave 6 from the machine room guide wheel 8 through the first counterweight guide wheel 51 on the front side of the counterweight re-entering rope sheave 6, and then passes through the second counterweight guide wheel 52 on the rear side of the counterweight re-entering rope sheave 6 and is suspended to the counterweight rope head plate 12 on the counterweight rope head bearing beam 13. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a counterweight side-drop elevator structure, which can make the distance between the counterweight and the car door panel assembly greater than the safety distance even if the traction machine wheel and the machine room guide wheel are not placed at an angle, thereby avoiding interference between the counterweight and the car door panel assembly in operation.

[0005] In order to solve the above technical problems, the present invention provides a counterweight side-drop elevator structure, which includes a traction machine wheel 7, a machine room guide wheel 8, a traction wire rope 14, a counterweight 4, a first pair of re-entry rope wheels 51, a second pair of re-entry rope wheels 52, a first counterweight guide wheel 61 and a second counterweight guide wheel 62;

[0006] The traction machine base 11 is fixedly arranged on the load-bearing beam 10 in the hoistway 1;

[0007] The traction machine wheel 7, the machine room guide wheel 8, the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 are fixed in the hoistway;

[0008] The first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 are arranged in a back-to-front arrangement;

[0009] The axes of the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62 are parallel;

[0010] The machine room guide wheel 8 is located between the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62 in the front-to-back direction, and is located near the car side of the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62 in the left-right direction;

[0011] The axis of the machine room guide wheel 8 is perpendicular to the axis of the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62;

[0012] The first pair of reentry rope wheels 51 and the second pair of reentry rope wheels 52 are fixedly arranged at the top of the counterweight 4 with a back-to-front spacing;

[0013] One end of the traction wire rope 14 is fixed to the traction machine wheel 7. The traction wire rope 14 passes downward from the rope groove on the far car side of the machine room guide wheel 8, around the first pair of re-entry rope pulleys 51, and upward from the rear rope groove of the first pair of re-entry rope pulleys 51 to successively pass around the first counterweight guide wheel 61 and the second counterweight guide wheel 62, and passes downward from the front rope groove of the second counterweight guide wheel 62 to the second pair of re-entry rope pulleys 52, and is suspended upward from the front rope groove of the second pair of re-entry rope pulleys 52 to the counterweight rope head bearing beam 13 in the hoistway 1.

[0014] Preferably, the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 are arranged one after the other at the same height of the hoistway.

[0015] Preferably, the distance from the rear side of the second pair of re-entry rope wheels 52 to the rear side of the first pair of re-entry rope wheels 51 is equal to the distance from the rear side of the first pair of heavy guide wheels 61 to the front side of the second pair of heavy guide wheels 62.

[0016] Preferably, the traction machine wheel 7 is located between the first counterweight guide wheel 61 and the second counterweight guide wheel 62 in the front-rear direction, and the axis of the traction machine wheel 7 is parallel to the axis of the machine room guide wheel 8.

[0017] Preferably, the position of the traction machine wheel 7 is higher than the position of the machine room guide wheel 8.

[0018] Preferably, the traction machine wheel 7 is located directly above the guide wheel 8 in the machine room.

[0019] Preferably, the traction machine wheel 7 is arranged on the side of the machine room guide wheel 8 close to the car.

[0020] Preferably, the traction machine wheel 7, the machine room guide wheel 8 and the traction machine are all fixed to the traction machine base 11;

[0021] The first pair of weight guide wheels (61) and the second pair of weight guide wheels (62) are fixed on the shaft wall or fixed on the load-bearing beam (10) through a bracket.

[0022] Preferably, the traction wire rope 14 is suspended upward from the rope groove on the front side of the second pair of re-entry rope sheaves 52 to the counterweight rope head plate 12 on the counterweight rope head bearing beam 13.

[0023] Preferably, the front-to-rear spacing between the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 is 1.1 to 1.5 times the thickness of the machine room guide wheel 8;

[0024] The far car side rope groove of the machine room guide wheel 8 extends between the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62.

[0025] In the counterweight side-drop elevator structure of the present invention, the traction wire rope 14 enters the first pair of reentry sheaves 51 arranged at the top rear portion of the counterweight 4 through the traction machine wheel 7 and the machine room guide wheel 8, enters the first counterweight guide wheel 61 after being guided by the first pair of reentry sheaves 51, and is horizontally forwardly transmitted to the second counterweight guide wheel 62. The second counterweight guide wheel 62 is used to ensure that the traction wire rope 14 vertically falls into the second pair of reentry sheaves 52 arranged at the top front portion of the counterweight 4, and is finally suspended to the counterweight rope head bearing beam 13. This arrangement allows the traction wire rope 14 to enter the two reentry sheaves arranged at the upper end of the counterweight 4 from the adjacent side, so that the position of the counterweight 4 can be moved backward by a distance of the counterweight reverse sheave diameter, so that the counterweight 4 can be placed in the center in the front-to-back direction (the depth direction of the hoistway and the car) as much as possible, so that the counterweight 4 is as far away as possible from the car door panel assembly 3 located in front of the elevator car 2, ensuring the safety space between the counterweight 4 and the hoistway 1, the elevator car 2 and the car door panel assembly 3. Even if the traction machine wheel 7 and the machine room guide wheel 8 are not placed tilted, the distance between the counterweight 4 and the car door panel assembly 3 can be greater than the safety distance (not less than 50mm), avoiding the interference between the counterweight 4 and the car door panel assembly 3, simplifying the positioning and installation of the elevator components during the installation process, and making the elevator layout more flexible without increasing the difficulty of elevator positioning and installation. Through reasonable layout, the layout requirements of the hoistway of a large-load elevator can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1It is a top view schematic diagram of the counterweight placement position of the existing machine room inclined elevator structure;

[0028] Figure 2 It is a top view schematic diagram of the elevator machine room layout of the existing elevator structure with inclined machine room;

[0029] Figure 3 yes Figure 2 AA section view;

[0030] Figure 4 It is a top view schematic diagram of the counterweight placement position of an embodiment of a counterweight side-drop elevator structure of the present invention;

[0031] Figure 5 1. It is a top view schematic diagram of the layout of an elevator machine room of an embodiment of a counterweight side-drop elevator structure of the present invention;

[0032] Figure 6 yes Figure 5 BB cross-sectional view.

[0033] Description of reference numerals in the figures:

[0034] 1 shaft; 2 car; 3 car door panel assembly; 4 counterweight; 51 the first pair of re-entry rope pulleys; 52 the second pair of re-entry rope pulleys; 6 counterweight guide wheels; 61 the first pair of weight guide wheels; 62 the second pair of weight guide wheels; 7 traction machine wheels; 8 machine room guide wheels; 9 car rope head plate; 10 load-bearing beam; 11 traction machine base; 12 counterweight rope head plate; 13 counterweight rope head load-bearing beam; 14 traction wire rope. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] like Figure 4 , Figure 5 and Figure 6 As shown, the counterweight side-drop elevator structure includes a traction machine wheel 7, a machine room guide wheel 8, a traction wire rope 14, a counterweight 4, a first pair of reentry rope wheels 51, a second pair of reentry rope wheels 52, a first counterweight guide wheel 61 and a second counterweight guide wheel 62;

[0038] The traction machine base 11 is fixedly arranged on the load-bearing beam 10 in the hoistway 1;

[0039] The traction machine wheel 7, the machine room guide wheel 8, the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 are fixed in the hoistway;

[0040] The first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 are arranged in a back-to-front arrangement;

[0041] The axes of the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62 are parallel;

[0042] The machine room guide wheel 8 is located between the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62 in the front-to-back direction (the depth direction of the hoistway and the car), and is located near the car side of the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62 in the left-right direction (the width direction of the hoistway and the car);

[0043] The axis of the machine room guide wheel 8 is perpendicular to the axis of the first pair of weight guide wheels 61 and the second pair of weight guide wheels 62;

[0044] The first pair of reentry rope wheels 51 and the second pair of reentry rope wheels 52 are fixedly arranged at the top of the counterweight 4 with a back-to-front spacing;

[0045] One end of the traction wire rope 14 is fixed to the traction machine wheel 7. The traction wire rope 14 passes downward from the rope groove on the far car side of the machine room guide wheel 8, around the first pair of re-entry rope pulleys 51, and upward from the rear rope groove of the first pair of re-entry rope pulleys 51 to successively pass around the first counterweight guide wheel 61 and the second counterweight guide wheel 62, and passes downward from the front rope groove of the second counterweight guide wheel 62 to the second pair of re-entry rope pulleys 52, and is suspended upward from the front rope groove of the second pair of re-entry rope pulleys 52 to the counterweight rope head bearing beam 13 in the hoistway 1.

[0046] Preferably, the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 are arranged one after the other at the same height of the hoistway.

[0047] Preferably, the distance from the rear side of the second pair of re-entry rope wheels 52 to the rear side of the first pair of re-entry rope wheels 51 is equal to the distance from the rear side of the first pair of heavy guide wheels 61 to the front side of the second pair of heavy guide wheels 62.

[0048] In the counterweight side-drop elevator structure of the first embodiment, the traction wire rope 14 enters the first pair of re-entry sheaves 51 arranged at the top rear portion of the counterweight 4 through the traction machine wheel 7 and the machine room guide wheel 8, enters the first counterweight guide wheel 61 after being guided by the first pair of re-entry sheaves 51, and is horizontally forwardly transmitted to the second counterweight guide wheel 62. The second counterweight guide wheel 62 is used to ensure that the traction wire rope 14 vertically falls into the second pair of re-entry sheaves 52 arranged at the top front portion of the counterweight 4, and is finally suspended to the counterweight rope head bearing beam 13. This arrangement allows the traction wire rope 14 to enter the two re-entry sheaves arranged at the upper end of the counterweight 4 from the adjacent side, so that the position of the counterweight 4 can be moved backward by a distance of the counterweight counter-ropes diameter, so that the counterweight 4 can be moved backward by a distance of the counterweight counter-ropes diameter. The counterweight 4 can be placed in the center in the front-to-back direction (the depth direction of the shaft and the car) as much as possible, so that the counterweight 4 is as far away as possible from the car door panel assembly 3 located in front of the elevator car 2, ensuring the safety space between the counterweight 4 and the shaft 1, the elevator car 2 and the car door panel assembly 3. Even if the traction machine wheel 7 and the machine room guide wheel 8 are not placed at an angle, the distance between the counterweight 4 and the car door panel assembly 3 can be greater than the safety distance (not less than 50mm), avoiding interference between the operation of the counterweight 4 and the car door panel assembly 3, simplifying the positioning and installation of the elevator components during the installation process, and making the elevator layout more flexible without increasing the difficulty of elevator positioning and installation. Through reasonable layout, the layout requirements of the large-load elevator shaft can be met.

[0049] Embodiment 2

[0050] Based on the counterweight side-drop elevator structure of embodiment one, the traction machine wheel 7 is located between the first counterweight guide wheel 61 and the second counterweight guide wheel 62 in the front-to-back direction (in the direction of the depth of the hoistway and the car), and the axis of the traction machine wheel 7 is parallel to the axis of the machine room guide wheel 8.

[0051] Preferably, the position of the traction machine wheel 7 is higher than the position of the machine room guide wheel 8.

[0052] Preferably, the traction machine wheel 7 is located directly above the guide wheel 8 in the machine room.

[0053] Preferably, the traction machine wheel 7 is arranged on the side of the machine room guide wheel 8 close to the car.

[0054] In the counterweight side-drop elevator structure of the second embodiment, the traction machine wheel 7 and the machine room guide wheel 8 can be placed horizontally or vertically.

[0055] Embodiment 3

[0056] Based on the counterweight side-drop elevator structure of the first embodiment, the traction machine wheel 7, the machine room guide wheel 8 and the traction machine are all fixed to the traction machine base 11;

[0057] The first pair of weight guide wheels (61) and the second pair of weight guide wheels (62) are fixed on the shaft wall or fixed on the load-bearing beam (10) through a bracket.

[0058] Preferably, the traction wire rope 14 is suspended upward from the rope groove on the front side of the second pair of re-entry rope sheaves 52 to the counterweight rope head plate 12 on the counterweight rope head bearing beam 13.

[0059] Preferably, the front-to-rear spacing between the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62 is 1.1 to 1.5 times the thickness of the machine room guide wheel 8;

[0060] The far car side rope groove of the machine room guide wheel 8 extends between the first pair of heavy guide wheels 61 and the second pair of heavy guide wheels 62.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. A counterweight side-drop elevator structure, characterized in that: It comprises a traction machine wheel (7), a machine room guide wheel (8), a traction wire rope (14), a counterweight (4), a first pair of re-entry rope wheels (51), a second pair of re-entry rope wheels (52), a first pair of weight guide wheels (61) and a second pair of weight guide wheels (62); The traction machine base (11) is fixedly arranged on a load-bearing beam (10) in the hoistway (1); The traction machine wheel (7), the machine room guide wheel (8), the first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62) are fixed in the hoistway; The first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62) are arranged at the same height of the hoistway, one behind the other, with a spacing therebetween; The axes of the first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62) are parallel; The machine room guide wheel (8) is located between the first pair of weight guide wheels (61) and the second pair of weight guide wheels (62) in the front-to-back direction, and is located on the car-closed side of the first pair of weight guide wheels (61) and the second pair of weight guide wheels (62) in the left-to-right direction; The axis of the machine room guide wheel (8) is perpendicular to the axis of the first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62); A first pair of reentry rope wheels (51) and a second pair of reentry rope wheels (52) are fixedly arranged at a distance from each other on the top of the counterweight (4). The traction machine wheel (7) is located between the first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62) in the front-rear direction, and the axis of the traction machine wheel (7) is parallel to the axis of the machine room guide wheel (8); One end of the traction steel wire rope (14) is fixed to the traction machine wheel (7). The traction steel wire rope (14) passes downward from the rope groove on the far side of the car of the machine room guide wheel (8) around the first pair of return rope wheels (51), passes upward from the rear side rope groove of the first pair of return rope wheels (51) around the first pair of weight guide wheels (61) and the second pair of weight guide wheels (62) in sequence, passes downward from the front side rope groove of the second pair of weight guide wheels (62) around the second pair of return rope wheels (52), and is suspended upward from the front side rope groove of the second pair of return rope wheels (52) to the counterweight rope head bearing beam (13) in the hoistway (1).

2. The counterweight side-drop elevator structure according to claim 1, characterized in that: The distance from the rear side of the second pair of reentry rope wheels (52) to the rear side of the first pair of reentry rope wheels (51) is equal to the distance from the rear side of the first pair of heavy guide wheels (61) to the front side of the second pair of heavy guide wheels (62).

3. The counterweight side-drop elevator structure according to claim 1, characterized in that: The position of the traction machine wheel (7) is higher than the position of the machine room guide wheel (8).

4. The counterweight side-drop elevator structure according to claim 1, characterized in that: The traction machine wheel (7) is located directly above the machine room guide wheel (8).

5. The counterweight side-drop elevator structure according to claim 1, characterized in that: The traction machine wheel (7) is arranged on the side of the machine room guide wheel (8) close to the car.

6. The counterweight side-drop elevator structure according to claim 1, characterized in that: The traction machine wheel (7), the machine room guide wheel (8) and the traction machine are all fixed to the traction machine base (11); The first pair of weight guide wheels (61) and the second pair of weight guide wheels (62) are fixed to the shaft wall or fixed to the load-bearing beam (10) via brackets.

7. The counterweight side-drop elevator structure according to claim 1, characterized in that: The traction steel wire rope (14) is suspended upward from the front rope groove of the second pair of reentry rope sheaves (52) to the counterweight rope head plate (12) on the counterweight rope head bearing beam (13).

8. The counterweight side-drop elevator structure according to claim 1, characterized in that: The front-to-rear spacing between the first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62) is 1.1 to 1.5 times the thickness of the machine room guide wheels (8); The rope groove on the far car side of the machine room guide wheel (8) extends between the first pair of heavy guide wheels (61) and the second pair of heavy guide wheels (62).

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