Domestic ladder short top layer bearing structure

Abstract

The utility model discloses a low top layer bearing structure of a household elevator, which relates to the technical field of elevators and comprises an elevator car, a counterweight device, a car guide rail, a counterweight guide rail, a traction host and a suspension device, the elevator car is arranged on the car guide rail in a sliding mode, and the counterweight device is arranged on the counterweight guide rail in a sliding mode. A main engine base is arranged at the top of the counterweight guide rail, a first guide wheel is rotationally arranged on the main engine base, and the traction main engine is fixedly connected to the main engine base; according to the scheme, the number of the guide wheels is reduced, on one hand, the space for installing redundant guide wheels is saved, the size of the whole bearing structure is smaller, the structure is simpler, on the other hand, the number of the guide wheels is reduced, the bending number of the suspension device is reduced, and the service life of the suspension device is prolonged. The fatigue life of the suspension device is effectively prolonged, and meanwhile noise generated when the suspension device makes contact with the guide wheel is reduced.

Description

Technical Field

[0001] This utility model relates to a load-bearing structure for the top floor of a household ladder, belonging to the field of elevator technology. Background Technology

[0002] As a means of transportation for people or goods in high-rise buildings, elevators have become an indispensable part of people's lives. When installing an elevator, a special elevator shaft needs to be built indoors. Because of the need to install elevator equipment, the reserved height of the elevator shaft often needs to be much higher than that of the building. If it is not possible to reserve extra height, the height of the elevator car needs to be reduced so that there is enough space at the top to install elevator equipment.

[0003] Chinese Patent No. CN221876258U discloses an elevator steel belt rope winding structure with a traction ratio of 1:1. Its key technical features include: a connecting bracket, a mounting main beam installed on the upper end of the counterweight guide rail, and a load-bearing main beam installed on the upper end of the car guide rail; the connecting bracket includes an intermediate seat, a first base located at one end of the intermediate seat, and a second base located at the other end of the intermediate seat and higher than the first base; the first base is installed on the mounting main beam, and the main unit is connected to the first base; a first guide wheel is provided on the first base; the second base is installed on the top of the load-bearing main beam, and a second guide wheel and a third guide wheel are provided on the second base; one end of the steel belt is connected to the counterweight device, and the other end is sequentially wound around the traction wheel, the first guide wheel, the second guide wheel, and the third guide wheel of the main unit before being connected to the elevator car.

[0004] The above technical solution reduces the probability of the steel belt detaching from the guide wheels or traction wheels by positioning and installing the first guide wheel, second guide wheel, third guide wheel, and traction wheel of the main unit on the connecting bracket, thus effectively improving the stability of the elevator driven by the steel belt. However, the above solution still has the following problems: 1. Setting multiple guide wheels for positioning and installation requires larger support components, which increases the space required for the overall installation of the elevator equipment. This makes installation difficult in low-roof buildings and reduces its practicality. 2. The steel belt needs to be wound and cooperate with multiple guide wheels, increasing the number of bends in the steel belt. This not only reduces the service life of the steel belt but also increases the noise during operation. To address the above problems, we propose a load-bearing structure for the top floor of a low-roofed residential elevator. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a load-bearing structure for the top floor of a household ladder.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a load-bearing structure for the top floor of a household elevator, comprising an elevator car, a counterweight device, a car guide rail, a counterweight guide rail, a traction main unit, and a suspension device; the elevator car is slidably mounted on the car guide rail, and the counterweight device is slidably mounted on the counterweight guide rail; a main unit base is provided at the top of the counterweight guide rail, and a first guide wheel is rotatably mounted on the main unit base, and the traction main unit is fixedly connected to the main unit base; a first support weldment is provided at the top of the car guide rail, the first support weldment being parallel to the main unit base, and two guide wheel beams are provided between the first support weldment and the main unit base, both of which are used to connect the main unit base and the first support weldment, and a second guide wheel is rotatably mounted between the two guide wheel beams; one end of the suspension device is connected and fixedly mounted on the counterweight device, and the other end of the suspension device passes sequentially around the traction main unit, the first guide wheel, and the second guide wheel, and is finally connected and fixedly mounted to the elevator car; the traction main unit drives the elevator car and the counterweight device to move up and down through the suspension device.

[0007] Preferably, one end of the guide wheel beam is provided with a second supporting weldment, and the guide wheel beam is connected and fixed to the main base through the second supporting weldment; the other end of the guide wheel beam is provided with a first connecting member, and the guide wheel beam is connected and fixed to the first supporting weldment through the first connecting member.

[0008] Preferably, a reinforcing rib is fixedly provided on the second supporting weldment, and the cross-section of the reinforcing rib is triangular.

[0009] Preferably, the main unit is provided with a second connector at both ends, and the main unit is connected and fixed to the counterweight guide rail through the second connectors at both ends; the first support weld is provided with a third connector at both ends, and the first support weld is connected and fixed to the car guide rail through the third connectors at both ends.

[0010] Preferably, the top surfaces of the traction main unit, the guide wheel beam, and the first support weld are flush.

[0011] Preferably, a mounting base is fixedly provided on the third connecting member, and a car speed limiter is provided on the mounting base, the car speed limiter cooperating with the elevator car.

[0012] Preferably, the second support weld has an opening for the suspension device to pass through.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] 1. This utility model reduces the number of guide wheels, which saves space for installing extra guide wheels, making the entire load-bearing structure smaller and simpler. On the other hand, reducing the number of guide wheels reduces the number of bends in the suspension device, effectively improving the fatigue life of the suspension device, and reducing the noise generated when the suspension device contacts the guide wheels.

[0015] 2. By setting the first support welded part and the main body base parallel to each other and connecting the two through the guide wheel beam, the load-bearing structure is simpler and more rationally laid out than the existing technology. All the load-bearing capacity of the elevator can be evenly distributed on the car guide rail and the counterweight guide rail, which optimizes the stress structure of the elevator and makes the elevator operation safer and more stable. Attached Figure Description

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0017] Appendix Figure 1 This is a structural schematic diagram of a load-bearing structure for the top floor of a household ladder as described in this utility model;

[0018] Appendix Figure 2 This is a structural schematic diagram of the present invention, which removes the elevator car and counterweight device.

[0019] Appendix Figure 3 For the appendix Figure 2 Enlarged view of point A in the middle;

[0020] Appendix Figure 4 This is a front view of the present invention.

[0021] In the diagram: 1. Elevator car; 2. Counterweight device; 3. Car guide rail; 31. First support welded part; 311. Third connecting part; 3111. Mounting base; 3112. Car speed governor; 4. Counterweight guide rail; 41. Main unit base; 411. First guide wheel; 42. Second connecting part; 5. Traction main unit; 6. Suspension device; 7. Guide wheel beam; 71. Second guide wheel; 72. Second support welded part; 721. Reinforcing rib; 722. Opening; 73. First connecting part. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] As attached Figure 1-4 As shown, the present invention provides a load-bearing structure for the top floor of a low-rise residential elevator, comprising an elevator car 1, a counterweight device 2, a car guide rail 3, a counterweight guide rail 4, a traction host 5, and a suspension device 6; the elevator car 1 is slidably mounted on the car guide rail 3, and the counterweight device 2 is slidably mounted on the counterweight guide rail 4.

[0024] In this embodiment, the suspension device 6 is a traction steel belt, but it can also be a traction steel wire rope or traction chain commonly used in the art.

[0025] A main unit base 41 is provided on the top of the counterweight guide rail 4. Specifically, a second connector 42 is provided at both ends of the main unit base 41. The main unit base 41 is connected and fixed to the counterweight guide rail 4 through the second connectors 42 at both ends to ensure a stable connection between the main unit base 41 and the counterweight guide rail 4. A first guide wheel 411 is rotatably provided on the main unit base 41, and the traction main unit 5 is fixedly connected to the main unit base 41.

[0026] The top of the car guide rail 3 is provided with a first support weldment 31. Specifically, both ends of the first support weldment 31 are provided with third connectors 311. The first support weldment 31 is connected and fixed to the car guide rail 3 through the third connectors 311 at both ends to ensure a stable connection between the first support weldment 31 and the car guide rail 3.

[0027] In this embodiment, a mounting base 3111 is fixedly provided on the third connector 311, and a car speed limiter 3112 is provided on the mounting base 3111. The car speed limiter 3112 cooperates with the elevator car 1 to reduce the running speed of the elevator car 1, making the elevator operation safer.

[0028] The first support weldment 31 is parallel to the main unit base 41. Two guide wheel beams 7 are provided between the first support weldment 31 and the main unit base 41. Both guide wheel beams 7 are used to connect the main unit base 41 and the first support weldment 31. A second guide wheel 71 is rotatably arranged between the two guide wheel beams 7. Specifically, a second support weldment 72 is provided at one end of the guide wheel beam 7, and the guide wheel beam 7 is connected and fixed to the main unit base 41 through the second support weldment 72. A first connector 73 is provided at the other end of the guide wheel beam 7, and the guide wheel beam 7 is connected and fixed to the first support weldment 31 through the first connector 73, so that both ends of the guide wheel beam 7 are stably connected to the first support weldment 31 and the main unit base 41 respectively.

[0029] By setting the first support welded part 31 and the main unit base 41 parallel to each other and connecting them through the guide wheel beam 7, the load-bearing structure is simpler and more rationally laid out than the existing technology. All the load-bearing capacity of the elevator can be evenly distributed on the car guide rail 3 and the counterweight guide rail 4, which optimizes the stress structure of the elevator and makes the elevator operation safer and more stable.

[0030] As attached Figure 2-3As shown, in this embodiment, a reinforcing rib 721 is fixedly provided on the second support weldment 72. The reinforcing rib 721 can be fixed on the second support weldment 72 by welding, bolting, or integral forming. The cross-section of the reinforcing rib 721 is triangular, which enhances the structural strength of the second support weldment 72 and further improves the connection stability between the guide wheel beam 7 and the main unit base 41. An opening 722 is provided on the second support weldment 72 for the suspension device 6 to pass through, so as to ensure that the suspension device 6 can pass smoothly through the second support weldment 72.

[0031] The top surfaces of the traction main unit 5, the guide wheel beam 7, and the first support weld 31 are flush; this reduces the top space of the entire load-bearing structure, making it easier to install in a confined space and greatly improving the ease of installation of the entire load-bearing structure.

[0032] One end of the suspension device 6 is connected and fixed to the counterweight device 2, and the other end of the suspension device 6 passes through the traction host 5, the first guide wheel 411, and the second guide wheel 71 in sequence, and is finally connected and fixed to the elevator car 1. The traction host 5 drives the elevator car 1 and the counterweight device 2 to move up and down through the suspension device 6.

[0033] Compared with the prior art, this application reduces the number of guide wheels, which saves space for installing extra guide wheels, making the entire load-bearing structure smaller and simpler. On the other hand, the reduction in the number of guide wheels reduces the number of bends in the suspension device 6, effectively improving the fatigue life of the suspension device 6, and reducing the noise generated when the suspension device 6 contacts the guide wheels.

[0034] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of this utility model.

Claims

1. A load-bearing structure for the top layer of a household ladder, characterized in that: The system includes an elevator car (1), a counterweight device (2), a car guide rail (3), a counterweight guide rail (4), a traction main unit (5), and a suspension device (6). The elevator car (1) is slidably mounted on the car guide rail (3), and the counterweight device (2) is slidably mounted on the counterweight guide rail (4). A main unit base (41) is provided on the top of the counterweight guide rail (4), and a first guide wheel (411) is rotatably mounted on the main unit base (41). The traction main unit (5) is fixedly connected to the main unit base (41). A first support weldment (31) is provided on the top of the car guide rail (3), and the first support weldment (31) is parallel to the main unit base (41). Two guide wheel beams (7) are provided between the first support weldment (31) and the main unit base (41). Both guide wheel beams (7) are used to connect the main unit base (41) and the first support weldment (31). A second guide wheel (71) is rotatably provided between the two guide wheel beams (7). One end of the suspension device (6) is connected and fixed to the counterweight device (2). The other end of the suspension device (6) passes around the traction main unit (5), the first guide wheel (411), and the second guide wheel (71) in sequence, and is finally connected and fixed to the elevator car (1). The traction main unit (5) drives the elevator car (1) and the counterweight device (2) to move up and down through the suspension device (6).

2. The load-bearing structure for the top layer of a household ladder according to claim 1, characterized in that: One end of the guide wheel beam (7) is provided with a second support weldment (72), and the guide wheel beam (7) is connected and fixed to the main body base (41) through the second support weldment (72); the other end of the guide wheel beam (7) is provided with a first connector (73), and the guide wheel beam (7) is connected and fixed to the first support weldment (31) through the first connector (73).

3. The load-bearing structure for the top layer of a household ladder according to claim 2, characterized in that: The second support weldment (72) is fixedly provided with a reinforcing rib (721), and the cross section of the reinforcing rib (721) is triangular.

4. The load-bearing structure for the top layer of a household ladder according to claim 1, characterized in that: The main unit (41) is provided with a second connector (42) at both ends, and the main unit (41) is connected and fixed to the counterweight guide rail (4) through the second connector (42) at both ends; the first support weld (31) is provided with a third connector (311) at both ends, and the first support weld (31) is connected and fixed to the car guide rail (3) through the third connector (311) at both ends.

5. The load-bearing structure for the top layer of a household ladder according to claim 4, characterized in that: The third connector (311) is fixedly provided with a mounting base (3111), and the mounting base (3111) is provided with a car speed limiter (3112), which cooperates with the elevator car (1).

6. The load-bearing structure for the top layer of a household ladder according to claim 1, characterized in that: The top surfaces of the traction host (5), guide wheel beam (7) and the first support weldment (31) are flush.

7. The load-bearing structure for the top layer of a household ladder according to claim 2, characterized in that: The second support weld (72) has an opening (722) for the suspension device (6) to pass through.

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