Integrated underbeam structure of home elevator

Abstract

The utility model discloses an integrated underbeam structure of a home elevator, which relates to the technical field of home elevators, and comprises a cross beam, two longitudinal beams, two groups of rope wheel components and two guide shoes, the two longitudinal beams are fixed at two ends of the cross beam along the direction vertical to the length direction of the cross beam, and the two groups of rope wheel components are respectively arranged at the side parts of two ends of the cross beam. The lifting assembly is arranged on one side of the cross beam, mounting arms are arranged at the bottoms of one ends of the two longitudinal beams, and mounting bases are arranged on the mounting arms; safety tongs are arranged at two ends of the cross beam; the lifting assembly comprises a lifting shaft, lifting arms fixed to the two ends of the lifting shaft and lifting pieces fixed to the lifting arms, and the lifting shaft is arranged in the length direction of the cross beam. According to the scheme, through mutual cooperation of the lifting shaft, the lifting arms and the brake blocks, when the elevator descends and is overspeed, the lifting arms on the two sides of the lifting shaft can rapidly act, and therefore the elevator can be lifted rapidly; and the brake block is driven to brake the elevator, so that the operation safety of the elevator is improved.

Description

Technical Field

[0001] The utility model relates to an integrated lower beam structure of a household elevator, belonging to the technical field of household elevators. Background Technique

[0002] At present, elevators in the household environment are gradually popularized. The structures of most household elevators are evolved from those of commercial elevators. The structures are stable and reliable, but often ignore the small installation environment space unique to household elevators. The structure of commercial elevators will inevitably bring problems such as difficult installation and low space utilization rate.

[0003] For example, the car bottom and the integrated lower beam with a car bracket disclosed in the Chinese patent with the publication number CN209740465U. The technical key points are as follows: Insertion holes penetrating the width of the lower beam body are arranged at both ends of the lower beam body. A supporting beam is inserted into each insertion hole. The two ends of the supporting beam symmetrically extend out of the insertion hole. Shock pads and leveling screws are installed at both ends of each supporting beam. The shock-absorbing surface of the shock pad faces upward, and the screw end of the leveling screw faces upward. A set of vertical tie rod connection structures for connecting vertical tie rods are arranged at both ends in the length direction of the lower beam body.

[0004] The above technical solution can fix the lower beam body on the car frame through the vertical tie rod connection structure, and at the same time fix the supporting beam on the car frame without using a diagonal tie rod to fix the supporting beam separately to solve the problem that the diagonal tie rod affects the vision of passengers in the car. However, the problem of the above solution is that the vertical tie rod connection structure is arranged at both ends of the lower beam body, increasing the length of the lower beam body, resulting in an increase in the installation space required. In a narrow hoistway, the installation is difficult and there are many space restrictions. At the same time, the stability and safety of the car operation are also issues that need to be considered. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an integrated lower beam structure of a household elevator to overcome the deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: an integrated lower beam structure of a household elevator, including a cross beam, two longitudinal beams, two groups of rope wheel assemblies and two guide shoes. The two longitudinal beams are fixed at both ends of the cross beam along the direction perpendicular to the length of the cross beam. The two groups of rope wheel assemblies are respectively installed on the side parts at both ends of the cross beam. A lifting assembly is also arranged on one side of the cross beam. Mounting arms are arranged at the bottom of one end of each of the two longitudinal beams, and mounting seats are arranged on the mounting arms; safety clamps are arranged at both ends of the cross beam.

[0007] The lifting assembly includes a lifting shaft, lifting arms fixed at both ends of the lifting shaft, and a lifting member fixed on the lifting arms. The lifting shaft is arranged along the length direction of the cross beam. Both ends of the lifting shaft pass through mounting seats on two longitudinal beams respectively and are rotatably matched with the mounting seats. The safety clamp is provided with a brake block and a long groove for the movement of the brake block. One end of the lifting arm away from the lifting shaft is fixedly connected to the brake block, and the lifting arm cooperates with the safety clamp through the brake block. The upper end of the lifting member has a lifting head, and the lifting head is used to cooperate with the speed limiter of the elevator.

[0008] The two guide shoes are respectively fixedly connected to both ends of the cross beam.

[0009] Preferably, torsion springs are arranged at both ends of the lifting shaft. One end of each torsion spring abuts against the mounting seat, and the other end is cooperated with the lifting shaft through a fixing pin.

[0010] Preferably, cross beam sealing plates are arranged at both ends of the cross beam. The safety clamps located at both ends of the cross beam are respectively fixed on the cross beam sealing plates at both ends of the cross beam. Guide shoe mounting plates are arranged on the cross beam sealing plates, and the guide shoe mounting plates are located on the lower sides of the cross beam sealing plates. The guide shoes are fixed at the ends of the cross beam through the guide shoe mounting plates.

[0011] Preferably, the two longitudinal beams penetrate through the cross beam and are fixed into an integral structure by welding, and the lengths of the longitudinal beams on both sides of the cross beam are equal.

[0012] Preferably, each set of rope wheel assemblies includes a wheel shaft and two rope wheel bodies. The two rope wheel bodies are respectively fixed at both ends of the wheel shaft. The wheel shaft penetrates through both sides of the cross beam, and the two rope wheel bodies are cooperated with the cross beam through the wheel shaft.

[0013] Preferably, wheel shaft clamping plates are arranged at both ends of the wheel shaft, and the wheel shaft clamping plates are located between the rope wheel bodies and the cross beam.

[0014] Preferably, cushion plates are arranged at both ends of the two longitudinal beams, and shock-absorbing rubber pads are arranged on the cushion plates.

[0015] Preferably, the cross beam has a U-shaped cross section, and the longitudinal beam has a C-shaped cross section.

[0016] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0017] 1. Through the mutual cooperation of the lifting shaft, the lifting arms and the brake block, when the elevator descends overspeed, the lifting arms on both sides of the lifting shaft can quickly act and drive the brake block to brake the elevator, thereby improving the running safety of the elevator.

[0018] 2. The cross beam and longitudinal beam of the present utility model are of an integral structure, and the lifting assembly is arranged on one side of the cross beam, without occupying the space on both sides of the cross beam and longitudinal beam, with a high degree of integration, which can improve the adaptability and the utilization rate of the hoistway. In addition, the lifting shaft and the lifting arms on both sides thereof secondarily fix the cross beam and the longitudinal beam, making the overall structure more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the present utility model will be further described below in conjunction with the drawings:

[0020] FIG Figure 1 is a structural schematic diagram of an integrated lower beam structure of a household elevator according to the present utility model;

[0021] FIG Figure 2 is an enlarged view of part A in FIG Figure 1 ;

[0022] FIG Figure 3 is an enlarged view of part B in FIG Figure 1 ;

[0023] FIG Figure 4 is a front view of an integrated lower beam structure of a household elevator according to the present utility model;

[0024] FIG Figure 5 is a sectional view taken along line A-A in FIG Figure 4 ;

[0025] In the figures: 1, cross beam; 2, longitudinal beam; 3, guide shoe; 4, lifting assembly; 41, lifting shaft; 42, lifting arm; 43, lifting member; 43a, lifting head; 5, mounting arm; 6, mounting seat; 7, safety gear; 71, brake block; 72, long groove; 8, torsion spring; 9, fixing pin; 10, cross beam seal plate; 11, guide shoe mounting plate; 12, wheel shaft; 13, rope wheel body; 14, wheel shaft clamping plate; 15, backing plate; 16, shock-absorbing rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0027] As shown in FIG Figures 1-5 , an integrated lower beam structure of a household elevator according to the present utility model is installed at the bottom of the elevator car and is used to support the elevator car. It includes a cross beam 1, two longitudinal beams 2, two groups of rope wheel assemblies and two guide shoes 3. The two longitudinal beams 2 are fixed at both ends of the cross beam 1 along the direction perpendicular to the length of the cross beam 1. In this embodiment, the cross section of the cross beam 1 is U-shaped, and the cross section of the longitudinal beam 2 is C-shaped. The two longitudinal beams 2 both penetrate the cross beam 1 and are fixed into an integral structure by welding, and the lengths of the longitudinal beams 2 on both sides of the cross beam 1 are equal, so that the suspension center coincides with the center of gravity of the car to ensure the stability of the car during operation.

[0028] Two sets of rope pulley assemblies are respectively installed on the two end sides of the cross beam 1. Specifically, each set of rope pulley assemblies includes a wheel shaft 12 and two rope pulley bodies 13. The two rope pulley bodies 13 are respectively fixed at both ends of the wheel shaft 12. The wheel shaft 12 penetrates through both sides of the cross beam 1. The two rope pulley bodies 13 are cooperated with the cross beam 1 through the wheel shaft 12. Wheel shaft clamping plates 14 are arranged at both ends of the wheel shaft 12, and the wheel shaft clamping plates 14 are located between the rope pulley body 13 and the cross beam 1. The wheel shaft 12 is cooperated with the side part of the cross beam 1 through the wheel shaft clamping plates 14, making the connection between the wheel shaft 12 and the cross beam 1 more stable.

[0029] Two guide shoes 3 are respectively connected and fixed at both ends of the cross beam 1. Specifically, beam sealing plates 10 are arranged at both ends of the cross beam 1. Guide shoe mounting plates 11 are arranged on the beam sealing plates 10, and the guide shoe mounting plates 11 are located on the lower side of the beam sealing plates 10. The guide shoes 3 are fixed at the ends of the cross beam 1 through the guide shoe mounting plates 11.

[0030] In this embodiment, mounting arms 5 are arranged at the bottom of one end of the two longitudinal beams 2, and mounting seats 6 are arranged on the mounting arms 5; safety clamps 7 are arranged at both ends of the cross beam 1. Among them, the safety clamps 7 located at both ends of the cross beam 1 are respectively fixed on the beam sealing plates 10 at both ends of the cross beam 1.

[0031] An integrated lower beam structure of a household elevator according to the present utility model further includes a lifting assembly 4 arranged on one side of the cross beam 1. Specifically, the lifting assembly 4 includes a lifting shaft 41, lifting arms 42 fixed at both ends of the lifting shaft 41, and a lifting member 43 fixed on the lifting arms 42. The lifting shaft 41 is arranged along the length direction of the cross beam 1 and is parallel to the cross beam 1. Both ends of the lifting shaft 41 respectively pass through the mounting seats 6 on the two longitudinal beams 2 and are rotationally cooperated with the mounting seats 6; a brake block 71 and a long groove 72 for the movement of the brake block 71 are arranged on the safety clamp 7. One end of the lifting arm 42 away from the lifting shaft 41 is connected and fixed to the brake block 71, and the lifting arm 42 is cooperated with the safety clamp 7 through the brake block 71; the upper end of the lifting member 43 has a lifting head 43a, and the lifting head 43a is used to cooperate with the speed limiter of the elevator. Specifically, the lifting head 43a is connected to the steel wire rope of the speed limiter.

[0032] During operation, when the car descends overspeed, the speed limiter operates, and the steel wire rope of the speed limiter is stuck and stops moving, so that the lifting head 43a drives one side of the lifting arm 42 to move upward. The upward movement of the lifting arm 42 drives the lifting shaft 41 to rotate and drives the other side of the lifting arm 42 to move upward. When the lifting arm 42 moves upward, it drives the brake block 71 to move upward, thereby clamping the guide rail on the safety clamp 7 to brake the elevator.

[0033] In this solution, the lifting assembly 4 is arranged on one side of the cross beam 1. While ensuring the safety of the car operation, it does not occupy the space on both sides of the cross beam 1 and the longitudinal beam 2, thus improving the utilization rate of the hoistway. The lifting assembly can be pre-assembled on the integrated structure formed by the cross beam and the longitudinal beam, and then transported to the site for installation after the assembly is completed, so as to ensure the connection accuracy between each component, and at the same time can avoid increasing the installation burden and improve the installation convenience. In addition, the lifting shaft 41 and the lifting arms 42 on both sides thereof secondarily fix the cross beam 1 and the longitudinal beam 2, making the integrated structure formed by the cross beam 1 and the longitudinal beam 2 more stable.

[0034] In this embodiment, torsion springs 8 are arranged at both ends of the lifting shaft 41. Specifically, one end of the torsion spring 8 abuts against the mounting seat 6, and the other end is matched with the lifting shaft 41 through a fixing pin 9. A pre-tightening force is applied to the lifting shaft 41 through the torsion spring 8 to ensure that the safety clamp 7 will not malfunction during the normal operation of the elevator.

[0035] Shock pads 15 are arranged at both ends of the two longitudinal beams 2, and shock-absorbing rubber pads 16 are arranged on the shock pads 15 to reduce the vibration amplitude during the operation of the elevator and improve the riding experience.

[0036] The above are only specific application examples of the present invention and do not constitute any limitation to the protection scope of the present invention. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the protection of the rights of the present invention.

Claims

1. An integrated lower beam structure of a household elevator, comprising a cross beam (1), two longitudinal beams (2), two sets of rope pulley assemblies and two guide shoes (3). The two longitudinal beams (2) are fixed to both ends of the cross beam (1) along the direction perpendicular to the length of the cross beam (1). The two sets of rope pulley assemblies are respectively installed on the side parts at both ends of the cross beam (1), and it is characterized in that: It further includes a lifting assembly (4) arranged on one side of the cross beam (1). Mounting arms (5) are provided at the bottoms of one ends of the two longitudinal beams (2), and a mounting seat (6) is arranged on the mounting arm (5); safety clamps (7) are provided at both ends of the cross beam (1); The lifting assembly (4) includes a lifting shaft (41), lifting arms (42) fixed at both ends of the lifting shaft (41), and a lifting member (43) fixed on the lifting arm (42). The lifting shaft (41) is arranged along the length direction of the cross beam (1). Both ends of the lifting shaft (41) pass through the mounting seats (6) on the two longitudinal beams (2) respectively and are rotationally matched with the mounting seats (6); a brake block (71) and a long groove (72) for the movement of the brake block (71) are arranged on the safety clamp (7). One end of the lifting arm (42) far from the lifting shaft (41) is fixedly connected to the brake block (71), and the lifting arm (42) is matched with the safety clamp (7) through the brake block (71); the upper end of the lifting member (43) has a lifting head (43a), and the lifting head (43a) is used to cooperate with the speed limiter of the elevator; The two guide shoes (3) are respectively fixedly connected to both ends of the cross beam (1).

2. The integrated lower beam structure of a household elevator according to claim 1, wherein: Torsion springs (8) are arranged at both ends of the lifting shaft (41). One end of the torsion spring (8) abuts against the mounting seat (6), and the other end is matched with the lifting shaft (41) through a fixing pin (9).

3. The integrated lower beam structure of a household elevator according to claim 1, characterized in that: Cross beam sealing plates (10) are arranged at both ends of the cross beam (1). The safety clamps (7) at both ends of the cross beam (1) are respectively fixed on the cross beam sealing plates (10) at both ends of the cross beam (1); a guide shoe mounting plate (11) is arranged on the cross beam sealing plate (10), and the guide shoe mounting plate (11) is located on the lower side of the cross beam sealing plate (10). The guide shoe (3) is fixed to the end of the cross beam (1) through the guide shoe mounting plate (11).

4. An integrated lower beam structure of a household elevator according to claim 1, characterized in that: The two longitudinal beams (2) both penetrate through the cross beam (1) and are fixed into an integral structure by welding, and the lengths of the longitudinal beams (2) on both sides of the cross beam (1) are equal.

5. The integral lower beam structure of a household elevator according to claim 1, characterized in that: Each set of rope wheel assemblies includes a wheel shaft (12) and two rope wheel bodies (13). The two rope wheel bodies (13) are respectively fixed at both ends of the wheel shaft (12). The wheel shaft (12) penetrates through both sides of the cross beam (1), and the two rope wheel bodies (13) are matched with the cross beam (1) through the wheel shaft (12).

6. The integrated lower beam structure of a household elevator according to claim 5, characterized in that: Wheel shaft clamping plates (14) are arranged at both ends of the wheel shaft (12), and the wheel shaft clamping plates (14) are located between the rope wheel body (13) and the cross beam (1).

7. The integrated lower beam structure of a household elevator according to claim 1, characterized in that: Pads (15) are arranged at both ends of the two longitudinal beams (2), and shock-absorbing rubber pads (16) are arranged on the pads (15).

8. An integrated lower beam structure of a household elevator according to claim 1, characterized in that: The cross section of the cross beam (1) is U-shaped, and the cross section of the longitudinal beam (2) is C-shaped.

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