4: 1 traction goods elevator with machine room

Abstract

The utility model discloses a 4: 1 traction goods elevator with a machine room. The 4: 1 traction goods elevator comprises a main machine beam (2) installed on a hoistway (1), a machine frame body (3) arranged on the main machine beam (2), a traction machine (31) arranged on the machine frame body (3), a guide frame (5) arranged below the main machine beam (2) and parallel to the machine frame body (3), and a traction guide wheel (51) arranged on the guide frame (5) and corresponding to the traction machine (31). The main machine beam (2) comprises a pair of machine placing beams (21) which are located in the center of the hoistway (1) and are parallel to each other, a counterweight frame (6) is arranged between the two machine placing beams (21), and counterweight guide wheels (61) which are horizontally distributed are arranged on the counterweight frame (6). The utility model has the characteristics that the structure is compact, the shaft space is saved, and the operation safety is improved.

Description

Technical Field

[0001] This utility model relates to a freight elevator structure, and more particularly to a 4:1 traction machine room freight elevator. Background Technology

[0002] A freight elevator with a machine room is a type of freight elevator that has a dedicated machine room within a building. Through the coordinated operation of components such as the traction machine, wire ropes, car, and counterweight, it achieves vertical transportation of goods within the building. Because the machine room of a freight elevator with a machine room is relatively large, it can accommodate larger elevators and carry heavier loads. Therefore, freight elevators with machine rooms are widely used in various types of buildings, especially in industrial plants, warehouses, shopping malls, hotels, hospitals, and other places, for transporting goods, equipment, and personnel, meeting the needs of heavy-load, high-frequency transportation, and improving work efficiency and safety.

[0003] The existing 4:1 traction machine room freight elevator requires a large space and has a low shaft utilization rate, resulting in a smaller actual usable building area. Furthermore, due to the 90° angle design between the traction machine and the counterweight guide wheel, the steel wire rope rotates at a 90° angle from the traction wheel to the counterweight wheel. This large torsion angle leads to high friction and wear between the steel wire rope and the traction wheel, making it prone to damage under long-term, high-frequency use and increasing the risk of safety accidents due to steel wire rope failure. Utility Model Content

[0004] The purpose of this invention is to provide a 4:1 traction machine room freight elevator. This invention features a compact structure, saves shaft space, and improves operational safety.

[0005] The technical solution of this utility model is as follows: A 4:1 traction machine room freight elevator includes a main beam installed on the shaft, a frame body distributed at a 45° angle to the horizontal plane on the main beam, a traction machine on the frame body, a guide frame parallel to the frame body below the main beam, and traction guide wheels corresponding to the traction machine on the guide frame; the main beam includes a pair of machine support beams located at the center of the shaft and parallel to each other, a counterweight frame between the two machine support beams, and horizontally distributed counterweight guide wheels on the counterweight frame.

[0006] In the aforementioned 4:1 traction machine room freight elevator, a horizontally distributed counterweight rope head beam is provided on one side of the main beam, and a counterweight rope head plate is provided on the counterweight rope head beam.

[0007] In one of the aforementioned 4:1 traction machine room freight elevators, one side of one of the machine support beams is provided with an inclined beam that is parallel to the frame body. A part of the frame body is installed on the inclined beam, and another part of the frame body is installed on the machine support beam.

[0008] In the aforementioned 4:1 traction machine room freight elevator, the end of the frame away from the traction machine is provided with a car rope head beam, a car rope head plate is provided on the car rope head beam, a rope head assembly is provided on the car rope head plate, and a weighing device is provided on the rope head assembly.

[0009] In the aforementioned 4:1 traction machine room freight elevator, the weighing device includes a weighing sensor, and the weighing sensor is provided with a weighing cover plate that is connected to the rope head.

[0010] In the aforementioned 4:1 traction machine room freight elevator, a car guide wheel is provided on the main beam between the traction machine and the car rope head beam. A protective cover is provided on the outside of the car guide wheel, and rope blocking components are provided on both sides of the protective cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention features a main beam positioned in the middle of the hoistway, upon which an inclined traction machine and traction guide wheel are mounted. This design makes the elevator structure more compact and stable, reducing the required hoistway depth, saving hoistway space, and facilitating a streamlined and compact arrangement of hoistway components. A counterweight guide wheel is positioned at the middle of the end of the main beam, placing the counterweight device on the centerline of the hoistway, reducing the space required for the counterweight, and further saving hoistway space.

[0013] The counterweight guide sheave and the traction guide sheave are at a 45° angle, so that when the wire rope on the traction sheave of the traction machine is guided by the traction guide sheave to the counterweight sheave and the counterweight guide sheave, the angle is 45°. The twist angle of the wire rope leading out of the traction machine is reduced, which reduces the degree of twisting and deformation of the wire rope during operation, reduces the friction and wear between the wire rope and the traction sheave, reduces the fatigue of the wire rope, and extends its service life. It also reduces the frequency and cost of elevator maintenance, reduces the risk of wire rope breakage, and thus ensures the stability and safety of elevator operation.

[0014] This invention optimizes the layout and structure of the traction system, reducing the requirements for shaft depth. Under the same load, the car is wider and shallower, making it suitable for wide and short cars.

[0015] Therefore, this utility model has the characteristics of compact structure, saving shaft space, and improving operational safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the distribution structure of the traction guide wheel and the counterweight guide wheel.

[0018] Figure 3 This is a schematic diagram of the rope end assembly.

[0019] The labels in the attached diagram are as follows: 1. Hoistway; 2. Main beam; 21. Machine support beam; 22. Inclined beam; 3. Frame body; 31. Traction machine; 4. Counterweight rope head beam; 41. Counterweight rope head plate; 5. Guide frame; 51. Traction guide wheel; 6. Counterweight frame; 61. Counterweight guide wheel; 7. Car rope head beam; 71. Car rope head plate; 72. Rope head assembly; 73. Weighing sensor; 74. Weighing cover plate; 8. Car guide wheel; 81. U-bolt; 82. Protective cover; 83. Rope stop assembly. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Example:

[0023] like Figures 1-3 As shown, a 4:1 traction machine room freight elevator includes a main beam 2 installed on a shaft 1. A frame body 3, inclined at 45° to the horizontal plane, is mounted on the main beam 2. A traction machine 31 is mounted on the frame body 3, and a traction sheave is mounted on the traction machine 31. A guide frame 5, parallel to the frame body 3, is located below the main beam 2, and a traction guide wheel 51 corresponding to the traction machine 31 is mounted on the guide frame 5. The main beam 2 includes a pair of parallel machine support beams 21 located at the center of the shaft 1. A counterweight frame 6 is located between the two machine support beams 21, and horizontally distributed counterweight guide wheels 61 are mounted on the counterweight frame 6. Both the traction guide wheels 51 and the traction sheaves are inclined at the same angle.

[0024] The present invention provides an inclined traction machine 31 on the main beam 2, which makes the elevator structure more compact and stable. A counterweight rope head beam 4 is provided on the side of the main beam 2, and a traction guide wheel 51 is provided below the main beam 2. This can reduce the depth requirement of the shaft 1, save the space of the shaft 1, and facilitate the simplified and compact arrangement of the shaft 1 components.

[0025] The counterweight frame is positioned between the two machine beams, which improves the structural strength and stability of the main beam and saves installation space. The counterweight guide wheel and the traction guide wheel are at a 45° angle, reducing the twist angle of the wire rope drawn from the traction machine 31 from 90° to 45°. This reduces the degree of twisting and deformation of the wire rope during operation, decreases friction and wear between the wire rope and the traction sheave, reduces wire rope fatigue, and extends service life. It also reduces the frequency and cost of elevator maintenance, lowers the risk of wire rope breakage, and thus ensures the stability and safety of elevator operation. One side of one of the machine beams 21 is equipped with an inclined beam 22.

[0026] The main beam 2 has a horizontally distributed counterweight rope head beam 4 on one side, and a counterweight rope head plate 41 is provided on the counterweight rope head beam 4.

[0027] One side of one of the support beams 21 is provided with an inclined beam 22 that is parallel to the frame body 3. A part of the frame body 3 is installed on the inclined beam 22, and another part of the frame body 3 is installed on the support beam 21. The main beam 2 includes the support beam 21 and the inclined beam 22, which together support the frame body 3, thereby improving the installation stability of the frame body 3.

[0028] The frame body 3, at the end furthest from the traction machine 31, is equipped with a car rope head beam 7. The car rope head beam 7 has a car rope head plate 71, and the car rope head plate 71 has a rope head assembly 72. A weighing device is installed on the rope head assembly 72 of the car rope head plate 71. Installing a weighing device on the rope head assembly 72 of the car rope head plate 71 saves space in the hoistway 1. The weighing device can be used to measure the weight of the car, thereby determining whether the car is fully loaded or overloaded.

[0029] The weighing device includes a weighing sensor 73, and a weighing cover plate 74 connected to the rope end assembly 72 is provided on the weighing sensor 73. The weighing device forms an integrated structure with the rope end assembly 72 through the weighing cover plate 74, which has the characteristics of simple and compact structure, accurate and stable weighing.

[0030] A car guide wheel 8 is installed on the main beam 2 between the traction machine 31 and the car rope head beam 7. The car guide wheel 8 is installed between the two support beams 21 by U-bolts 81. A protective cover 82 is provided on the outside of the car guide wheel 8, and rope-blocking assemblies 83 are installed on both sides of the protective cover 82 between the two support beams 21. The protective cover 82 protects the car guide wheel 8, and the rope-blocking assemblies 83 prevent the wire rope on the car guide wheel 8 from jumping off and detaching, thereby improving the running stability of the wire rope.

[0031] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.

Claims

1. A 4:1 traction machine room freight elevator, characterized in that: The system includes a main beam (2) installed on the shaft (1), a frame body (3) on the main beam (2) at a 45° angle to the horizontal plane, a traction machine (31) on the frame body (3), a guide frame (5) parallel to the frame body (3) below the main beam (2), and a traction guide wheel (51) corresponding to the traction machine (31) on the guide frame (5); the main beam (2) includes a pair of machine support beams (21) located at the center of the shaft (1) and parallel to each other, a counterweight frame (6) between the two machine support beams (21), and a counterweight guide wheel (61) horizontally distributed on the counterweight frame (6).

2. A 4:1 traction machine room freight elevator according to claim 1, characterized in that: The main beam (2) has a horizontally distributed counterweight rope head beam (4) on one side, and a counterweight rope head plate (41) is provided on the counterweight rope head beam (4).

3. A 4:1 traction machine room freight elevator according to claim 1, characterized in that: One side of one of the machine support beams (21) is provided with an inclined beam (22) that is parallel to the machine frame (3). A part of the machine frame (3) is installed on the inclined beam (22), and the other part of the machine frame (3) is installed on the machine support beam (21).

4. A 4:1 traction machine room freight elevator according to claim 1, characterized in that: The frame body (3) is provided with a car rope head beam (7) at one end away from the traction machine (31), a car rope head plate (71) is provided on the car rope head beam (7), a rope head assembly (72) is provided on the car rope head plate (71), and a weighing device is provided on the rope head assembly (72).

5. A 4:1 traction machine room freight elevator according to claim 4, characterized in that: The weighing device includes a weighing sensor (73), and the weighing sensor (73) is provided with a weighing cover plate (74) connected to the rope head assembly (72).

6. A 4:1 traction machine room freight elevator according to claim 4, characterized in that: The main beam (2) is provided with a car guide wheel (8) located between the traction machine (31) and the car rope head beam (7). The car guide wheel (8) is provided with a protective cover (82) on the outside. The protective cover (82) is provided with rope blocking components (83) on both sides.

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