CN108557620A - A kind of lift car shock-damping structure - Google Patents

Abstract

The invention discloses a shock absorbing structure for an elevator car, which comprises a car and a car frame. The car frame includes an upper beam, a straight beam and a bracket at the bottom of the car, and an upper beam bracket is arranged between the upper beam and the top of the car; The car tray is installed on the two opposite sides of the bottom of the car, the upper beam bracket is provided with a shock absorber assembly, and a tie rod is provided at both ends to connect the car tray and the shock absorber assembly respectively, passing through the The pull rod of the shock absorbing pad assembly is elastically stressed and the pull rod supports the car and separates from the bracket at the bottom. In the present invention, the shock absorber between the bracket and the car is placed on the top of the car, and the car is completely separated from the bracket by means of a pull rod, so that the elevator car is far away from the bottom wheel assembly of the car, thereby effectively controlling the movement of the elevator car. Vibration and comfort of elevator operation.

Description

A shock absorbing structure for an elevator car

technical field

The invention relates to the technical field of elevators, in particular to an elevator car shock absorbing structure.

Background technique

In order to save space in the hoistway, many elevator manufacturers have developed elevators with a wheel structure at the bottom of the car, which is characterized in that the wheels are installed at the bottom of the car. And in the prior art, the shock absorption of the elevator car all realizes by installing a shock absorbing pad between the bottom of the car and the bracket.

A kind of car floor structure provided by the utility model patent of publication number CN206142627U, shock absorbing pads are set between the inclined lower beam and the car floor wheel support to improve the ride comfort of the elevator. But the car bottom wheel assembly can produce an exciting vibration during operation, that is, the car bottom wheel is the vibration source. Vibration can be transmitted to the car through the shock-absorbing pad. If the vibration frequency is higher, the car will vibrate faster, which will affect the smoothness and comfort of the elevator.

Contents of the invention

The invention provides a shock absorbing structure for an elevator car. The shock absorbing pad between the bracket and the car is placed on the car roof, and the car is completely separated from the bracket by means of a pull rod, so that the elevator car is far away from the bottom wheels of the car. components, so as to effectively control the vibration of the elevator car and the comfort of the elevator operation.

A shock absorbing structure for an elevator car, comprising a car and a car frame, the car frame including an upper beam, a straight beam and a bracket at the bottom of the car, and an upper beam bracket is arranged between the upper beam and the top of the car;

The car tray is installed on the two opposite sides of the bottom of the car, the upper beam bracket is provided with a shock absorber assembly, and a tie rod is provided at both ends to connect the car tray and the shock absorber assembly respectively, passing through the The pull rod of the shock absorbing pad assembly is elastically stressed to hold up the car and separate from the bracket at the bottom.

In this technical solution, one end of the pull rod is connected to the shock-absorbing pad assembly on the upper beam bracket, and the other end is connected to the car tray at the bottom of the car. The pull rod can be pulled tightly to separate the car from the bottom bracket, away from the vibration source. The bottom wheel of the car prevents the vibration from being transmitted to the car and improves the stability and comfort of the elevator operation. In addition, the shock-absorbing pad assembly has elastic force and has a buffering effect, further reducing the vibration of the elevator.

Preferably, the shock absorbing pad assembly includes an upper sealing plate, a lower sealing plate fixed on the upper beam support, and a shock absorbing pad a between the upper sealing plate and the lower sealing plate;

One end of the pull rod passes through the lower sealing plate, the shock absorbing pad a and the upper sealing plate in sequence, and the end is sleeved with a fastening nut.

The shock absorber assembly is fixed on the upper beam bracket through the lower sealing plate, cooperates with the car tray, and tensions the tie rod. The tension of the tie rod can be adjusted through the fastening nut at the end of the tie rod; during assembly, it is also tightened Tighten the nuts so that the tie rods can support the car.

As a preference, a shock absorber b is provided between the car tray and the bottom of the car, that is, the shock absorber b is pressed tightly on the car tray and the bottom of the car, which can better reduce the vibration of the car.

Preferably, at least two groups of car trays and shock absorbing pad assemblies are installed on the same side of the car, and are evenly distributed on both sides of the straight beam.

In this application, the upper and lower car trays and shock-absorbing pad assemblies are matched with the corresponding pull rods to form a group. In order to make the car lift up and maintain its balance, at least two groups should be arranged on the same side. Or it can be appropriately increased according to the load of the car, preferably symmetrically distributed on both sides of the car.

As a preference, the shock absorbing pad a and the shock absorbing pad b are both rubber shock absorbing pads.

Preferably, a shock-absorbing pad c is provided between the bracket and the car wheel assembly installed at the bottom. Further preferably, the shock-absorbing pad c is a rubber shock-absorbing pad.

The shock absorber between the bracket and the car bottom wheel is equivalent to the second level of shock absorption, which further reduces the impact of the car bottom wheel vibration on the car.

Preferably, there are two straight beams located on the same side of the car, respectively connecting both sides of the end of the upper beam with the bracket;

The top and the bottom of the car are respectively equipped with two straight beam clamps extending between the straight beams, the two straight beam clamps are respectively close to the inner sides of the two straight beams, and a shock absorber is arranged between the straight beam clamps and the straight beams.

The straight beam clamping plate that car side is provided stretches between the straight beams, and the shock absorber is fitted with the side faces of the straight beams 5, so that the car is damped in the front, rear, left, and right directions. The shock absorbing pad here is a rubber shock absorbing pad, which is installed on the straight beam clamping plate by bolts. The bolt-on shock pads can be adjusted to fit snugly against the straight beam.

Preferably, the shock absorbing pad assembly includes an upper sealing plate, a lower sealing plate fixed on the upper beam bracket, and a spring between the upper sealing plate and the lower sealing plate; one end of the pull rod passes through the lower sealing plate in turn. plate, spring and upper sealing plate, and the ends are covered with fastening nuts. Spring shock absorption can also be used in the shock absorbing pad assembly, which has the same effect.

In the present invention, the car is supported by the pull rod to keep it away from the car bottom wheel assembly as the vibration source, so as to achieve the purpose of shock absorption and noise reduction.

Description of drawings

Fig. 1 is an isometric view of an elevator car and a damping system;

Figure 2 is a top view of the elevator car;

Figure 3 is a side view of the elevator car;

Figure 4 is an enlarged view of Part A;

Figure 5 is an enlarged view of part B;

Figure 6 is an enlarged view of part C;

Fig. 7 is a detailed view of the No. 2 car tray.

In the figure: 1. Car bottom wheel assembly; 2. Car tray; 21. Rubber damping pad; 3. Straight beam pallet; 4. Car; 5. Straight beam; 6. Pull rod; 7. Shock absorbing pad assembly ; 71, upper sealing plate; 72, rubber shock absorbing pad; 73, lower sealing plate; shock absorbing pad assembly; 8, bracket; 9, upper beam; 10, rubber shock absorbing pad; 11, bracket; shock pad.

Detailed ways

The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited thereto.

The elevator car damping structure as shown in Figure 1-7 comprises car 4 and car frame, and car frame 4 includes upper beam 9, straight beam 5 and the bracket 11 at the bottom of the car. An upper beam support 8 is arranged between the lower parts of the two ends of the upper beam 9 and the top of the car 4 . The car undercarriage assembly 1 is installed on the bottom of the bracket 11, and a rubber damping pad 10 is installed between them.

The two opposite sides of the bottom of the car 4 are connected with a car tray 2, and a shock absorber assembly 7 is installed on the upper beam bracket 8, and a tie rod 6 and a tie rod with two ends connected to the car tray 2 and the shock absorber assembly 7 are respectively provided. One end of 6 is connected to the shock absorbing pad assembly 7, and the other end is connected to the car tray 2 at the bottom of the car. The pull rod 6 can be tightened to support the car 4, so that it can be separated from the bracket 10 at the bottom, away from the car as the vibration source. Bottom wheel.

As shown in Figure 3, in this embodiment, there are four sets of car trays and shock absorbing pad assemblies, which are symmetrically distributed on both sides of the car, so that the car can be evenly stressed and maintain balance and stability after being lifted.

As shown in FIG. 4 , the shock absorbing pad assembly 7 includes an upper sealing plate 71 , a lower sealing plate 73 fixed on the upper beam bracket 8 , and a rubber shock absorbing pad 72 between the upper sealing plate and the lower sealing plate. One end of the tie rod 6 passes through the lower sealing plate 73, the rubber damping pad 72 and the upper sealing plate 71 in turn, and the two ends are covered with fastening nuts, which can adjust the tension of the pulling rod; during assembly, the fastening nut is also tightened. Make the pull rod hold up the car. As shown in Figures 6 and 7, the car tray 2 is provided with a hole suitable for the passage of the pull rod, and the position where the car tray 2 and the bottom of the car are attached is provided with a rubber shock absorber 21, and the car tray 2 can be fixed by bolts. At the bottom of the car, and compress the rubber damping pad 21 that plays a buffering role.

As shown in Figure 5, there are two straight beams 5 on the same side of the car 4, which are respectively connected to the two sides of the end of the upper beam 9 and the bracket 11; The two straight beam clamps 3 are close to the inner sides of the two straight beams 5 respectively, and a rubber damping pad 12 is also arranged between the straight beam clamps 3 and the straight beams 5 . The rubber damping pad 12 is installed on the straight beam clamping plate 3 by bolts, and the rubber damping pad 12 can be adjusted so that it is close to the straight beam.

In this embodiment, the cushion assembly 7, the car tray 2 and the pull rod 6 cooperate to support the car 4, separate it from the bracket 10 at the bottom, and keep away from the bottom wheel of the car as a vibration source, forming the first stage of the car. damping. The straight beam clamping plate 3 on the car 4 side stretches between the straight beams, and the rubber damping pad 12 is attached to the side end faces of the straight beams 5, so that the car is damped in the front, rear, left, and right directions, forming the secondary shock absorption of the car. Through the cooperation of the two damping methods, the vibration of the elevator car can be effectively controlled and the comfort of the elevator can be improved.

In another parallel embodiment, other structures are the same, and the rubber shock absorber 72 in the shock absorber assembly 7 can be replaced with a spring, and the same technical effect can also be achieved.

The above descriptions are only examples of the preferred implementation of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention within.

Claims (10)

1. A shock absorbing structure for an elevator car, comprising a car and a car frame, the car frame comprising an upper beam, a straight beam and a bracket at the bottom of the car, and an upper beam bracket is arranged between the upper beam and the top of the car; its Characterized by: The car tray is installed on the two opposite sides of the bottom of the car, the upper beam bracket is provided with a shock absorber assembly, and a tie rod is provided at both ends to connect the car tray and the shock absorber assembly respectively, passing through the The pull rod of the shock absorbing pad assembly is elastically stressed and the pull rod supports the car and separates from the bracket at the bottom. 2. The elevator car shock absorbing structure as claimed in claim 1, wherein the shock absorbing pad assembly comprises an upper sealing plate, a lower sealing plate fixed on the upper beam support, and an upper sealing plate and a lower sealing plate. Shock-absorbing pad a between the sealing plates; One end of the pull rod passes through the lower sealing plate, the shock absorbing pad a and the upper sealing plate in sequence, and the end is sleeved with a fastening nut. 3. The elevator car shock absorbing structure according to claim 2, characterized in that, a shock absorbing pad b is provided between the car tray and the bottom of the car. 4. The elevator car shock absorbing structure according to claim 3, wherein at least two groups of car trays and shock absorbing pad assemblies are installed on the same side of the car, which are evenly distributed on both sides of the straight beam. side. 5. The elevator car shock absorbing structure according to claim 3, characterized in that, said shock absorbing pad a and shock absorbing pad b are both rubber shock absorbing pads. 6. The elevator car shock absorbing structure according to claim 1, characterized in that, a shock absorbing pad c is provided between the bracket and the car wheel assembly installed at the bottom thereof. 7. The elevator car shock absorbing structure according to claim 6, wherein the shock absorbing pad c is a rubber shock absorbing pad. 8. The damping structure of an elevator car as claimed in claim 1, wherein there are two straight beams on the same side of the car, which are respectively connected to the two sides of the end of the upper beam and the bracket; The top and the bottom of the car are respectively equipped with two straight beam clamps extending between the straight beams, the two straight beam clamps are respectively close to the inner sides of the two straight beams, and a shock absorber is arranged between the straight beam clamps and the straight beams. 9. The elevator car shock absorbing structure according to claim 1, wherein the shock absorbing pad is mounted on the straight beam clamping plate through bolts. 10. The elevator car shock absorbing structure according to claim 1, characterized in that, the shock absorbing pad assembly comprises an upper sealing plate, a lower sealing plate fixed on the upper beam support, and an upper sealing plate and a lower sealing plate. Spring between the sealing plates; One end of the pull rod passes through the lower sealing plate, the spring and the upper sealing plate in turn, and the end is sleeved with a fastening nut.