Adjusting mechanism for car bottom wheel of elevator without machine room

Abstract

The utility model relates to the technical field of elevator accessories, in particular to an adjusting mechanism for car bottom wheels of an elevator without a machine room, which mainly comprises a support beam, the car bottom wheels, a shock-absorbing seat and a mounting seat, a main oil cavity and a plurality of branch oil cavities communicated with the main oil cavity are arranged in the shock-absorbing seat, and an electric hydraulic push rod is embedded in the mounting seat. A main piston plate extending into the main oil cavity is installed on a movable rod of the electric hydraulic push rod, an energy consumption block is installed on the outer side of the main piston plate, a branch piston plate is slidably installed in the branch oil cavity, an ejector rod is installed at the lower end of the branch piston plate, and an anti-collision plate is jointly supported by the outer end, extending out of the damping base, of the ejector rod. The position of the main piston plate in the main oil cavity can be adjusted through the electric hydraulic push rod, then the position of the anti-collision plate can be adjusted, the overall weight reduction performance of the device when the anti-collision plate is pressed is adjusted, and the use requirement is better met.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator accessories, in particular to an adjusting mechanism for a car bottom wheel of a machine roomless elevator. Background Art

[0002] Under the premise that the rated load of the elevator does not exceed 2000kg, the machine room-less elevator usually adopts a 2:1 traction drive mode, that is, the traction machine drives the traction wire rope through friction, thereby driving the movable pulley located at the top (or bottom) of the car and the movable pulley set on the top of the counterweight to realize the up and down reciprocating operation of the elevator car. In recent years, with the continuous competition of many elevator manufacturers, the price of elevators has continued to decline, and the demand for elevators has become increasingly large. Due to the high utilization rate of the shaft space, the acceptance of machine room-less elevators by users has also increased. However, with the increasing demand of potential customers, a variety of elevator shafts have continued to emerge. The most common demand is that the top floor height of the elevator is required to be shorter and the depth of the pit is getting shallower. The car top wheel structure of the machine room-less elevator (that is, the structure with the movable pulley on top) is generally designed as a car bottom wheel structure (that is, the structure with the movable pulley on the bottom). Because there are two sets of car bottom pulleys under a 2:1 traction ratio, the pulleys are connected by a car bottom wheel fixing frame. In order to reduce the vibration and noise generated by the car bottom pulleys when the car moves up and down, a shock-absorbing device is usually added between the car bottom wheel fixing frame and the lower beam of the car.

[0003] A Chinese patent document with publication number CN208308196U provides a machine room-less elevator car bottom wheel shock absorption structure, comprising a car frame of a rectangular frame structure and a car bottom wheel fixing frame installed at the bottom of the car frame, two car bottom wheels are rotatably mounted on the car bottom wheel fixing frame, the two car bottom wheels are arranged at an angle between a first center plane and a second center plane where the car frame is located, a shock absorbing pad is provided between the bottom of the car frame and the car bottom wheel fixing frame, and the center of the shock absorbing pad is located at the intersection of the first center plane and the second center plane. This machine room-less elevator car bottom wheel shock absorption structure can realize mass production of elevators, reduce manufacturing costs, and facilitate on-site installation and adjustment.

[0004] However, the above-mentioned machine room-less elevator car bottom wheel lacks an adjustment mechanism that can adjust the shock absorption performance, so its structure needs to be optimized and improved. Utility Model Content

[0005] The purpose of the utility model is to overcome the above problems existing in the traditional technology and provide an adjusting mechanism for the bottom wheel of a machine room-less elevator.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] The camshaft is an axially ...

[0008] Furthermore, in the adjustment mechanism of the car bottom wheel of the machine room-less elevator, the shape of the main piston plate matches the shape of the main oil chamber, and the shape of the branch piston plate matches the shape of the branch oil chamber.

[0009] Furthermore, in the adjustment mechanism of the car bottom wheel of the machine room-less elevator, the shock-absorbing seat is provided with a shaft seal at the through hole of the movable rod of the electric hydraulic push rod and the push rod.

[0010] Furthermore, in the above-mentioned adjustment mechanism of the car bottom wheel of the machine room-less elevator, the upper side plate of the shock-absorbing seat is provided with a plurality of pressure relief holes connected with the main oil chamber.

[0011] Furthermore, in the adjustment mechanism of the car bottom wheel of the machine room-less elevator, an anti-collision rubber pad is bonded to the lower side of the anti-collision plate.

[0012] Furthermore, in the above-mentioned adjustment mechanism of the car bottom wheel of the machine room-less elevator, the energy-absorbing block is a rubber energy-absorbing block that can dissipate energy through deformation.

[0013] The beneficial effects of the utility model are:

[0014] The utility model has a reasonable structural design and is mainly composed of a supporting beam, a car bottom wheel, a shock-absorbing seat and a mounting seat. A main oil chamber and a plurality of branch oil chambers connected thereto are opened in the shock-absorbing seat. An electric hydraulic push rod is embedded and installed inside the mounting seat. The movable rod of the electric hydraulic push rod is installed with a main piston plate extending into the main oil chamber. An energy-absorbing block is installed on the outer side of the main piston plate. A branch piston plate is slidably installed in the branch oil chamber. A push rod is installed at the lower end of the branch piston plate. The outer end of the push rod extending from the shock-absorbing seat jointly supports an anti-collision plate. A compression spring is sleeved on the outer side of the exposed rod body of the push rod. The position of the main piston plate in the main oil chamber can be adjusted by the electric hydraulic push rod, and then the position of the anti-collision plate can be adjusted. The weight reduction performance of the overall device when the anti-collision plate is under pressure can be adjusted to better meet the use requirements.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall external structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model as a whole;

[0019] Figure 3 This is a schematic diagram of the main structure of the shock-absorbing seat in the utility model;

[0020] Figure 4 It is a schematic diagram of the top view of the mounting seat in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the electric hydraulic push rod, the main piston plate and the energy consumption block in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the branch piston plate, the push rod and the anti-collision plate in the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1-support beam, 2-car bottom wheel, 3-shock absorber seat, 4-mounting seat, 5-fixing hole, 6-main oil chamber, 7-branch oil chamber, 8-electric hydraulic push rod, 9-main piston plate, 10-energy absorption block, 11-branch piston plate, 12-thrust rod, 13-anti-collision plate, 14-compression spring, 15-anti-collision rubber pad, 16-pressure relief hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 6As shown, this embodiment is an adjustment mechanism for a machine room-less elevator car bottom wheel, which is used to adjust the shock absorption performance of the machine room-less elevator car bottom wheel. The adjustment mechanism includes a support beam 1, a car bottom wheel 2, a shock absorbing seat 3 and a mounting seat 4. The car bottom wheels 2 are installed at both ends of the support beam 1, the shock absorbing seat 3 is embedded and installed in the middle of the support beam 1, and the mounting seat 4 is fixed on the upper side of the shock absorbing seat 3. A main oil chamber 6 and a plurality of branch oil chambers 7 connected thereto are provided in the shock absorbing seat 3. The mounting seat 4 is symmetrically provided with fixing holes 5 on the periphery, and an electric hydraulic push rod 8 is embedded and installed inside the mounting seat 4. The movable rod of the electric hydraulic push rod 8 extends into the main oil chamber 6 and is installed with a main piston plate 9, and an energy dissipation block 10 is installed on the outer side of the main piston plate 9. A branch piston plate 11 is slidably installed in the branch oil chamber 7, and a push rod 12 extending from the shock absorbing seat 3 is installed at the lower end of the branch piston plate 11. The outer ends of the push rod 12 are jointly supported with an anti-collision plate 13 , and a compression spring 14 is sleeved on the outer side of the exposed rod body of the push rod 12 .

[0027] In this embodiment, the shape of the main piston plate 9 matches the shape of the main oil chamber 6, and the shape of the branch piston plate 11 matches the shape of the branch oil chamber 7. Piston sealing rings are installed on the outer peripheries of the main piston plate 9 and the branch piston plate 11.

[0028] In this embodiment, the shock absorbing seat 3 is provided with a shaft seal at the through hole of the movable rod of the electric hydraulic push rod 8 and the push rod 12 .

[0029] In this embodiment, the upper side plate of the shock absorber seat 3 is provided with a plurality of pressure relief holes 16 connected to the main oil chamber 6 . The design of the pressure relief holes 16 enables the main piston plate 9 to be smoothly driven by the electric hydraulic push rod 8 to slide.

[0030] In this embodiment, an anti-collision rubber pad 15 is bonded to the lower side of the anti-collision plate 13 .

[0031] In this embodiment, the energy dissipation block 10 is a rubber energy dissipation block that can dissipate energy through deformation.

[0032] A specific application of the present embodiment is as follows: the present regulating mechanism is mainly composed of a supporting beam 1, a car bottom wheel 2, a shock absorbing seat 3, and a mounting seat 4. A main oil chamber 6 and a plurality of branch oil chambers 7 connected thereto are provided in the shock absorbing seat 3. An electric hydraulic push rod 8 is embedded and installed inside the mounting seat 4. The movable rod of the electric hydraulic push rod 8 is installed with a main piston plate 9 extending into the main oil chamber 6. An energy-absorbing block 10 is installed on the outer side of the main piston plate 9. A branch piston plate 11 is slidably installed in the branch oil chamber 7. A push rod 12 is installed at the lower end of the branch piston plate 11. The outer end of the push rod 12 extending from the shock absorbing seat 3 jointly supports an anti-collision plate 13. A compression spring 14 is sleeved on the outer side of the exposed rod body of the push rod 12. The position of the main piston plate 9 in the main oil chamber 6 can be adjusted by the electric hydraulic push rod 8, and then the position of the anti-collision plate 13 can be adjusted. When the anti-collision plate 13 is under pressure, the weight reduction performance of the overall device is adjusted to better meet the use requirements.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An adjustment mechanism for a machine room-less elevator car bottom wheel, the adjustment mechanism is used to adjust the shock absorption performance of the machine room-less elevator car bottom wheel, characterized in that: The adjusting mechanism includes a support beam, a car bottom wheel, a shock-absorbing seat and a mounting seat, the car bottom wheels are installed at both ends of the support beam, a shock-absorbing seat is embedded in the middle of the support beam, and a mounting seat is fixed on the upper side of the shock-absorbing seat; a main oil chamber and a plurality of branch oil chambers connected thereto are opened in the shock-absorbing seat, and fixing holes are symmetrically opened on the periphery of the mounting seat, an electric hydraulic push rod is embedded in the interior of the mounting seat, the movable rod of the electric hydraulic push rod extends into the main oil chamber and is installed with a main piston plate, an energy-absorbing block is installed on the outer side of the main piston plate, a branch piston plate is slidably installed in the branch oil chamber, a push rod extending from the shock-absorbing seat is installed at the lower end of the branch piston plate, the outer ends of the push rods jointly support an anti-collision plate, and a compression spring is sleeved on the outer side of the exposed rod body of the push rod.

2. The adjustment mechanism for the machine room-less elevator car bottom wheel according to claim 1, characterized in that: The shape of the main piston plate matches the shape of the main oil chamber, and the shape of the branch piston plate matches the shape of the branch oil chamber.

3. The adjustment mechanism of the machine room-less elevator car bottom wheel according to claim 2, characterized in that: The shock-absorbing seat is provided with a shaft seal at the through hole of the movable rod and the push rod of the electric hydraulic push rod.

4. The adjustment mechanism for the machine room-less elevator car bottom wheel according to claim 3, characterized in that: The upper side plate of the shock absorber seat is provided with a plurality of pressure relief holes which are communicated with the main oil chamber.

5. The adjustment mechanism for the car bottom wheel of a machine room-less elevator according to claim 4, characterized in that: An anti-collision rubber pad is bonded to the lower side of the anti-collision plate.

6. The adjustment mechanism for the car bottom wheel of a machine room-less elevator according to claim 5, characterized in that: The energy dissipation block is a rubber energy dissipation block which can dissipate energy through deformation.

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