Strong-drive overload device

Abstract

The utility model discloses a strong-drive overload device which comprises a lower positioning plate (1), an overload installation seat (2) used for installing an elevator overload switch is arranged at one end of the lower side of the lower positioning plate (1), rope head assemblies are arranged at the two ends of the lower positioning plate (1), and each rope head assembly comprises a rope head rod (3) with the lower end vertically penetrating through the lower positioning plate (1). The upper end of the rope hitch rod (3) sequentially and vertically penetrates through the upper positioning plate (4), the limiting plate (5) and the upper beam inner lining plate (6), the rope hitch rod (3) is sleeved with a spring (7) connected with the lower positioning plate (1) and the upper positioning plate (4), a plurality of sets of shock pads (8) which are symmetrically arranged are arranged between the upper positioning plate (4) and the upper beam inner lining plate (6), and the shock pads (8) are fixed to the upper side of the upper positioning plate (4) through limiting grooves (9) in the limiting plate (5). Vibration impact on the spring can be reduced, the detection effect is prevented from being affected, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to a strong-drive overload device, in particular to a strong-drive elevator overload detection device. Background Art

[0002] As the name implies, the driving force of a strong-drive elevator comes from the friction between the traction wheel and the traction wheel directly driven by the motor, which makes the elevator car move up and down. This type of elevator has a simple structure and is easy to install. Moreover, since there is no traditional machine room, it saves space and reduces construction costs. In addition, strong-drive elevators are also characterized by smooth operation and low noise. During the operation of the elevator, it is necessary to detect whether the elevator is overloaded. Elevator overload will increase the risk of accidents and affect the passenger experience. Therefore, an overload detection device is usually installed under the elevator to detect whether the elevator is overloaded.

[0003] For example, the patent with application number 201920196368.8 discloses an elevator overload detection device, including a rope head assembly, which is composed of bolts, shock-absorbing springs, and rope head mounting beams, and also includes a fixed plate, a bracket, a short shaft, a fixed rod, a rotating plate, a proximity switch, and a sensing block. The utility model is provided with a fixed plate, a bracket, a short shaft, a fixed rod, and a rotating plate, and the bolts on the rope head assembly are connected to the rope head plate of the external elevator, and the rope head mounting beam is connected to the external traction device. The change in the weight of the elevator drives the shock-absorbing spring on the rope head assembly to compress or extend, drives the fixed plate to float vertically, and makes the short shaft float vertically. The short shaft slides in the waist-shaped groove, and drives the rotating plate to rotate along the hinge with the fixed rod by abutting against the inner wall of the waist-shaped groove, so that the sensing block is close to or away from the proximity switch, and then generates or loses a signal through the proximity switch, which is transmitted to the external controller, and the external controller determines whether the elevator is overloaded. However, during use, the spring will be subjected to vibration shock, resulting in changes in spring performance, affecting the detection effect, and bringing safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide a strong drive overload device, which can reduce the vibration impact on the spring, avoid affecting the detection effect, and reduce safety hazards.

[0005] The technical solution of the utility model is as follows: a strong drive overload device comprises a lower positioning plate, an overload mounting seat for installing an elevator overload switch is provided at one end of the lower side of the lower positioning plate, rope head assemblies are provided at both ends of the lower positioning plate, the rope head assembly comprises a rope head rod whose lower end vertically penetrates the lower positioning plate, the upper end of the rope head rod vertically penetrates the upper positioning plate, the limit plate and the upper beam inner lining plate in sequence, the outer sleeve of the rope head rod is provided with a spring connecting the lower positioning plate and the upper positioning plate, a plurality of groups of symmetrically arranged shock-absorbing pads are provided between the upper positioning plate and the upper beam inner lining plate, and the shock-absorbing pads are fixed to the upper side of the upper positioning plate through the limit grooves on the limit plate.

[0006] In the aforementioned strong drive overload device, the shock absorbing pad is a step-type shock absorbing pad, and the lower end of the shock absorbing pad is engaged with the limit groove.

[0007] In the aforementioned strong drive overload device, a limiting round steel is provided in the middle of the opposing surfaces of the lower positioning plate and the upper positioning plate, and a spring connecting the lower positioning plate and the upper positioning plate is provided in the limiting round steel.

[0008] In the aforementioned strong drive overload device, evenly distributed bolt holes are provided on both sides of the upper positioning plate and the limit plate.

[0009] Compared with the prior art, the utility model arranges multiple groups of symmetrically arranged shock-absorbing pads between the upper positioning plate and the upper beam inner lining plate. The shock-absorbing pads can reduce the vibration impact on the spring, avoid changes in spring performance, affect the supporting effect on the upper positioning plate and the upper beam inner lining plate, and change the detection effect of the elevator overload switch. The shock-absorbing pads are fixed by the limit grooves on the limit plates, without rigid connection, and have good shock-absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] The markings in the attached drawings are: 1-lower positioning plate, 2-overload mounting seat, 3-rope head rod, 4-upper positioning plate, 5-limiting plate, 6-upper beam lining plate, 7-spring, 8-shock-absorbing pad, 9-limiting groove, 10-limiting round steel, 11-bolt hole. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0013] Embodiment. A strong drive overload device, comprising: Figure 1 As shown, it includes a lower positioning plate 1, and an overload mounting seat 2 for installing an elevator overload switch is provided at one end of the lower side of the lower positioning plate 1. Rope head assemblies are provided at both ends of the lower positioning plate 1. The rope head assembly includes a rope head rod 3 whose lower end vertically penetrates the lower positioning plate 1, and the upper end of the rope head rod 3 vertically penetrates the upper positioning plate 4, the limit plate 5 and the upper beam lining plate 6 in sequence. The rope head rod 3 is outerly provided with a spring 7 connecting the lower positioning plate 1 and the upper positioning plate 4. A plurality of groups of symmetrically arranged shock-absorbing pads 8 are provided between the upper positioning plate 4 and the upper beam lining plate 6. The shock-absorbing pads 8 are fixed to the upper side of the upper positioning plate 4 through the limit grooves 9 on the limit plate 5.

[0014] The shock-absorbing pad 8 is a step-type shock-absorbing pad, and the lower end of the shock-absorbing pad 8 is engaged with the limiting groove 9.

[0015] A limiting round steel 10 is provided in the middle of the opposing surfaces of the lower positioning plate 1 and the upper positioning plate 4 , and a spring 7 for connecting the lower positioning plate 1 and the upper positioning plate 4 is provided in the limiting round steel 10 .

[0016] The upper positioning plate 4 and the limiting plate 5 are provided with evenly distributed bolt holes 11 on both sides.

[0017] The principle of the utility model: the rope rod is used to guide and position the upper beam inner lining plate 6, and the upper positioning plate 4 compresses the spring. The elevator overload switch is an existing elevator overload switch that can detect the distance. The upper positioning plate reacts to the spring compression to detect the elevator load. The application sets a limit round steel 10 on the opposite surface of the upper positioning plate 4 and the lower positioning plate 1, and a spring 7 connecting the lower positioning plate 1 and the upper positioning plate 4 is provided in the limit round steel 10 to increase the rigidity. In order to prevent the vibration and impact during the use of the elevator from harming the spring 7, the application sets a shock-absorbing pad 8 between the upper positioning plate 4 and the upper beam inner lining plate 6, and the shock-absorbing pad 8 is a step-type shock-absorbing pad, that is, the lower end radius of the shock-absorbing pad 8 is smaller than the upper end radius of the shock-absorbing pad 8, and the lower end of the shock-absorbing pad 8 is engaged in the limit groove 9 of the limit plate 5, and the limit plate 5 and the upper positioning plate 4 are connected by the cooperation of the bolt nut and the bolt hole 11, so that there is no rigid connection between the shock-absorbing pad 8 and the upper positioning plate 4 and the upper beam inner lining plate 6, and the shock-absorbing effect is good.

Claims

1. A strong drive overload device, characterized in that: The utility model comprises a lower positioning plate (1), wherein an overload mounting seat (2) for mounting an elevator overload switch is provided at one end of the lower side of the lower positioning plate (1), and rope head assemblies are provided at both ends of the lower positioning plate (1), and the rope head assembly comprises a rope head rod (3) whose lower end vertically penetrates the lower positioning plate (1), and the upper end of the rope head rod (3) vertically penetrates the upper positioning plate (4), the limit plate (5) and the upper beam inner lining plate (6) in sequence, and the outer sleeve of the rope head rod (3) is provided with a spring (7) for connecting the lower positioning plate (1) and the upper positioning plate (4), and a plurality of groups of symmetrically arranged shock-absorbing pads (8) are provided between the upper positioning plate (4) and the upper beam inner lining plate (6), and the shock-absorbing pads (8) are fixed to the upper side of the upper positioning plate (4) through the limit grooves (9) on the limit plate (5).

2. A strong drive overload device according to claim 1, characterized in that: The shock-absorbing pad (8) is a step-type shock-absorbing pad, and the lower end of the shock-absorbing pad (8) is engaged with the limiting groove (9).

3. A strong drive overload device according to claim 1, characterized in that: A limiting round steel (10) is provided in the middle of the opposing surfaces of the lower positioning plate (1) and the upper positioning plate (4), and a spring (7) for connecting the lower positioning plate (1) and the upper positioning plate (4) is provided in the limiting round steel (10).

4. A strong drive overload device according to claim 1, characterized in that: Evenly distributed bolt holes (11) are provided on both sides of the upper positioning plate (4) and the limiting plate (5).

Images