Compact household elevator

Abstract

A compact household elevator comprises a car assembly, a car guide rail system, a counterweight assembly, a counterweight guide rail system and a traction system, the counterweight guide rail system comprises a first counterweight guide rail and a second counterweight guide rail which are fixed to the front side and the rear side of the right side wall, and the counterweight assembly can be arranged between the first counterweight guide rail and the second counterweight guide rail in an up-down sliding mode; the lift car guide rail system comprises a first lift car guide rail fixed to the middle of the left side wall of the hoistway and a second lift car guide rail fixed in the hoistway, the middle of one side face of the counterweight assembly is provided with a pit extending vertically, and at least part of the second lift car guide rail is located in the pit to further shorten the space of the left hoistway and the right hoistway. On the premise that rigidity stability is guaranteed, the sunken part extending up and down is formed in the middle of the counterweight assembly, and at least part of the second car guide rail is inserted into the sunken part, so that the occupied space in the left-right direction of the hoistway is greatly reduced, and the utilization rate of the hoistway is higher.

Description

Technical Field

[0001] The utility model relates to the field of lifts, in particular to a compact household elevator. Background Art

[0002] In existing technology, a side-mounted counterweight is a common elevator layout. This means the counterweight assembly and counterweight guide rails are located on the left or right side of the car assembly, with two car guide rails located on each side of the car assembly. Because the car guide rails avoid the counterweight assembly, they occupy a significant amount of space in the hoistway, resulting in low hoistway utilization. Therefore, developing an elevator with a side-mounted counterweight that offers greater space utilization is crucial. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a compact household elevator.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a compact home elevator, comprising a car assembly with a car frame and a car, a car guide rail system providing a lifting and guiding function for the car assembly, a counterweight assembly, a counterweight guide rail system providing a lifting and guiding function for the counterweight assembly, and a traction system, the counterweight guide rail system comprising a first counterweight guide rail and a first counterweight guide rail fixed to the front and rear sides of one of the left and right walls of the shaft, the counterweight assembly being slidable up and down between the first counterweight guide rail and the first counterweight guide rail, The car guide rail system includes a first car guide rail fixed to the other upper middle part of the left side wall and the right side wall of the shaft, and a second car guide rail fixed in the shaft. The first straight line between the first car guide rail and the second car guide rail is perpendicular to the second straight line between the first counterweight guide rail and the first counterweight guide rail, and the second car guide rail is located in the space between the first car guide rail and the second straight line. The middle part of one side of the counterweight assembly has a recess extending up and down, and the second car guide rail is at least partially located in the recess to further shorten the left and right shaft space.

[0005] In some embodiments, the car frame includes an upper beam frame, a car bottom assembly, and longitudinal columns connected in the middle of both sides between the upper beam frame and the car bottom assembly. Guide shoes are respectively installed on the sides of the two longitudinal columns, and the two longitudinal columns are slidably matched with the corresponding first car guide rails and the first car guide rails.

[0006] In some embodiments, each of the longitudinal columns is symmetrically equipped with lateral assembly brackets on its front and rear sides, and a lateral extrusion arm is elastically equipped on the outer side of the lateral assembly bracket, and an outer guide wheel is movably equipped on the outer end of the lateral extrusion arm.

[0007] In certain embodiments, a pressure sensor is provided between the lateral extrusion arm on each side and the corresponding lateral assembly bracket, and the pressure sensor is connected to a control box in the car.

[0008] In some embodiments, the traction system includes a traction rope and a traction sheave fixed to the top of the hoistway. After one end of the traction rope is fixed to the counterweight rope head frame at the top of the hoistway, the other end is sequentially passed around the pair of re-entry rope sheaves downwards, passed around the traction sheave upwards, passed around the first car return rope sheave and the second car return rope sheave downwards, and then the other end is fixed to the car rope head frame at the top of the hoistway. The axial center lines of the pair of re-entry rope sheaves, the traction sheave, the first car return rope sheave and the second car return rope sheave are parallel, and the axial center lines extend in the front-to-back horizontal direction.

[0009] In some embodiments, the traction system includes a traction rope and a traction wheel fixed to the top of the shaft. After one end of the traction rope is fixed to the counterweight assembly, the other end is sequentially passed around the traction wheel upward, passed around the first top guide rope wheel downward, passed around the second top guide rope wheel upward, and then passed around the first car top wheel and the second car top wheel fixed at the center position of the top of the car frame downward first and then upward, and then the other end is fixed to the top of the car frame. The axial center lines of the traction wheel, the first top guide rope wheel, the second top guide rope wheel and the first car top wheel are parallel, and the axial center lines extend in the front-to-back horizontal direction.

[0010] In some embodiments, a car door is provided on the front side and / or the rear side of the car.

[0011] In some embodiments, the clear width of the hoistway differs from the clear width of the car assembly.

[0012] The scope of this utility model is not limited to technical solutions formed by a specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents. For example, technical solutions formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0013] Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the car assembly of the present invention is slidably arranged between the two first car guide rails and the second car guide rails, and on the premise of ensuring rigidity and stability, a recess extending up and down is opened in the middle of the counterweight assembly, and the second car guide rail is at least partially inserted into the recess, thereby greatly reducing the space occupied in the left and right directions of the shaft, making the shaft utilization rate higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 This is a schematic diagram of an elevator viewed from above;

[0015] Attachment Figure 2This is a schematic diagram of the installation of the partial outer guide wheel on the side of the longitudinal column;

[0016] Attachment Figure 3 This is a schematic diagram of the elevator elevation (Example 1);

[0017] Attachment Figure 4 This is a schematic diagram of the elevator elevation (Example 2);

[0018] Among them: 1. Car assembly; 10. Car frame; 11. Vertical column; 12. Lateral assembly bracket; 13. Lateral extrusion arm; 14. Outer guide wheel; 2. Counterweight assembly; 21. Recess; 3a. First counterweight guide rail; 3b. First counterweight guide rail; 4a. First car guide rail; 4b. Second car guide rail; 5. Traction sheave. DETAILED DESCRIPTION

[0019] Example 1, as shown in the attached Figure 1-3 As shown, a compact home elevator includes a car assembly 1 having a car frame 10 and a car, a car guide rail system, a counterweight assembly 2, a counterweight guide rail system and a traction system.

[0020] The counterweight rail system includes first and second counterweight rails 3a, 3b, fixed to the right sidewall of the hoistway, front and rear. The counterweight assembly 2 is slidably positioned between these two rails. A vertically extending depression 21 is located in the middle of the left side of the counterweight assembly 2. A steel isolation plate with a corresponding shape to the left side of the counterweight assembly 2 is located between the side edges of the first and second counterweight rails 3a, 3b.

[0021] The car guide rail system includes a first car guide rail 4a fixed to the upper center of the left side wall of the hoistway, and a second car guide rail 4b fixed inside the hoistway and located on the side of the isolation steel plate. The second car guide rail 4b is partially located in the recess 21, shortening the left and right hoistway space. In this embodiment, the difference between the net width of the hoistway and the net width of the car assembly 1 is only 250 mm, greatly improving the utilization of the hoistway space.

[0022] Furthermore, the detailed structure of the car assembly 1: the car frame 10 includes an upper beam frame, a car bottom assembly, and two longitudinal columns 11 connected between the upper beam frame and the car bottom assembly. The two longitudinal columns 11 are respectively located in the middle of the front and rear directions, and guide shoes are respectively installed on the sides, and the two longitudinal columns 11 are respectively slidably matched with the corresponding first car guide rails 4a and the first car guide rails 4a.

[0023] As attached Figure 1 , Attachment Figure 2As shown, each longitudinal column 11 is symmetrically equipped with lateral assembly brackets 12 on the front and rear sides, and a lateral extrusion arm 13 is pivotally connected to the outer side of the lateral assembly bracket 12, and a torsion spring is provided between the lateral extrusion arm 13 and the lateral assembly bracket 12 to cause the lateral extrusion arm 13 to pop outward. A pressure sensor is provided between each lateral extrusion arm 13 and the corresponding lateral assembly bracket 12, and the pressure sensor is connected to the control box in the car. An outer guide wheel 14 is rollingly installed on the lateral extrusion arm 13. The outer guide wheels on the front and rear sides of the longitudinal column 11 cooperate with the corresponding car guide rails, thereby further improving the ride stability and comfort of the car assembly. In addition, if the guide shoe on the longitudinal column 11 bursts, the offset between the longitudinal column 11 and the corresponding car guide rail and the force on the corresponding outer guide wheel 14 are sensed by the pressure sensor, facilitating timely maintenance.

[0024] The traction system includes a traction rope and a traction machine fixed on the top of the shaft. After one end of the traction rope is fixed to the counterweight rope head frame at the top of the shaft, the other end is passed downward around the re-entry rope pulley, upward around the traction machine traction wheel 5, downward around the first car return rope pulley and the second car return rope pulley, and the other end is fixed on the car rope head frame at the top of the shaft. The axial center lines of the re-entry rope pulley, traction wheel 5, first car return rope pulley and second car return rope pulley are parallel, and the axial center lines extend along the front and rear horizontal directions.

[0025] A car door is provided on the front side of the car.

[0026] Example 2, as shown in the attached Figure 4 As shown, the difference between the second embodiment and the first embodiment lies in the different rope winding methods of the traction system.

[0027] The traction system includes a traction rope and a traction sheave 5 fixed to the top of the shaft. After one end of the traction rope is fixed to the counterweight assembly 2, the other end passes over the traction sheave 5 in sequence, passes over the first top guide sheave downward, passes over the second top guide sheave upward, and then passes over the first car top wheel and the second car top wheel fixed at the top center of the car frame 10 downward first and then upward, and then the other end is fixed to the top of the car frame 10. The axial center lines of the traction sheave 5, the first top guide sheave, the second top guide sheave, and the first car top wheel are parallel, and the axial center lines extend along the front-to-back horizontal direction.

[0028] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A compact home elevator, comprising a car assembly (1) having a car frame (10) and a car, a car guide rail system, a counterweight assembly (2), a counterweight guide rail system, and a traction system, wherein the counterweight guide rail system comprises a first counterweight guide rail (3a) and a first counterweight guide rail (3b) fixed to the front and rear sides of one of the left and right walls of a shaft, the counterweight assembly (2) being slidably disposed between the first counterweight guide rail (3a) and the first counterweight guide rail (3b), and characterized in that : The car guide rail system comprises a first car guide rail (4a) fixed to the other upper middle portion of the left and right walls of the shaft, and a second car guide rail (4b) fixed in the shaft, wherein a recess (21) extending vertically is provided in the middle portion of one side of the counterweight assembly (2), and the second car guide rail (4b) is at least partially located in the recess (21).

2. A compact home elevator according to claim 1, characterized in that: The car frame (10) comprises an upper beam frame, a car bottom assembly, and longitudinal columns (11) connected between the upper beam frame and the car bottom assembly on both sides. Guide shoes are respectively installed on the sides of the two longitudinal columns (11), and the two longitudinal columns (11) are respectively slidably matched with the corresponding first car guide rails (4a) and the first car guide rails (4a).

3. A compact home elevator according to claim 2, characterized in that: Each of the longitudinal columns (11) is symmetrically equipped with lateral assembly brackets (12) on both the front and rear sides, and the outer side of the lateral assembly bracket (12) is elastically equipped with a lateral extrusion arm (13), and the outer end of the lateral extrusion arm (13) is movably equipped with an outer guide wheel (14).

4. A compact home elevator according to claim 3, characterized in that: A pressure sensor is provided between the lateral extrusion arm (13) on each side and the corresponding lateral assembly bracket (12), and the pressure sensor is connected to a control box in the car.

5. A compact home elevator according to claim 1, characterized in that: The front side and / or the rear side of the car is provided with a car door.

6. A compact home elevator according to claim 1, characterized in that: The net width of the hoistway differs from the net width of the car assembly (1) by 250 mm.

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