Automatic locking mechanism for preventing elevator car of ultrahigh and overweight elevator from sinking

Abstract

The utility model discloses an automatic locking mechanism for preventing an ultrahigh and overweight elevator car from sinking, which is mounted below the car and comprises a motor speed reducer, and long connecting rods are respectively arranged on two sides of the motor speed reducer. The end, away from the motor reducer, of the long connecting rod is movably connected with a rotating swing arm. The fixed clamping plate is mounted on a vertical column of the elevator, and the long connecting rod drives the rotating swing arm to rotate under the action of the motor speed reducer, so that the rotating swing arm is locked with or unlocked from the fixed clamping plate; during locking, the motor speed reducer rotates forwards, the two long connecting rods extend outwards and drive the rotating swing arm to rotate, and the end of the rotating swing arm and the fixed clamping plate are locked in an embedded mode. During unlocking, the motor speed reducer rotates reversely, the two long connecting rods retract inwards and drive the rotating swing arm to rotate, and the end of the rotating swing arm is separated from the fixed clamping plate for unlocking. The reciprocating elevator adopting the automatic locking mechanism can protect a steel wire rope or a chain for dragging a lift car and a main body structure of equipment, the service life is prolonged, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of locking mechanism technology, and in particular to an automatic locking mechanism to prevent the car of an over-height or over-weight hoist from sinking. Background Technology

[0002] With the continuous development of science and technology, reciprocating elevators have been widely used in factories to improve the efficiency of pallet handling between multiple floors and save manpower and resources. Operators use forklifts to pick up pallets and place them on the conveyor in front of the elevator. After pressing the confirmation button, the pallet is automatically transported into the elevator car, which is driven by a lifting motor to ascend to the designated floor, completing the pallet turnover.

[0003] In actual operation, when the lifting stroke of the elevator car is high (over 25 meters) or the material being transported is heavy (over 2 tons), the extension of the chain and wire rope when the pallet enters the car from the conveyor can cause the car to suddenly sink. At the same time, the material on the pallet may tilt or even tip over due to the impact. In addition, each time the pallet enters the car, it will impact the lifting mechanism of the reciprocating elevator. Long-term operation will damage the main structure and service life of the equipment itself. In severe cases, it may cause the wire rope or chain traction car to break, and the car to fall, posing a serious safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic locking mechanism to prevent the car of an over-height or over-weight hoist from sinking, so that the pallet can be transferred more smoothly and steadily between the conveyor and the reciprocating hoist, thereby improving the reliability and safety of the reciprocating hoist operation.

[0005] To solve the above-mentioned technical problems, this utility model provides an automatic locking mechanism to prevent the car of an over-height or over-weight hoist from sinking. It is installed under the car and includes a motor reducer, with long connecting rods on both sides of the motor reducer.

[0006] The end of the long connecting rod away from the motor reducer is movably connected to a rotating swing arm;

[0007] It also includes a fixed plate installed on the elevator column. Under the action of the motor reducer, the long connecting rod drives the rotating swing arm to rotate, so that it locks or unlocks with the fixed plate.

[0008] When locked, the motor reducer rotates forward, the two long connecting rods extend outward and drive the rotating swing arm to rotate, so that the end of the rotating swing arm engages and locks with the fixed plate;

[0009] When unlocking, the motor reducer reverses, the two long connecting rods retract inward, and drive the rotating swing arm to rotate, so that the end of the rotating swing arm disengages from the fixed plate and unlocks.

[0010] Preferably, the two long connecting rods are connected by a swing arm, and the swing arm is also connected to the output shaft of the motor reducer.

[0011] Preferably, the middle part of the swing arm is fixedly connected to the output shaft of the motor reducer, and the two ends of the swing arm are respectively rotatably connected to the two long connecting rods through the first joint bearing. Under the action of the motor reducer, the swing arm drives the two long connecting rods to extend outward or retract inward synchronously.

[0012] Preferably, one end of the rotating swing arm is connected to the swing arm support, and the other end is provided with a roller; under the action of the long connecting rod, the rotating swing arm is driven to rotate around the swing arm support, so that the roller at the other end is engaged and locked with the fixed plate.

[0013] Preferably, the fixing plate has a U-shaped slot, and the roller can be engaged and locked with the U-shaped slot.

[0014] Preferably, the end of the long connecting rod is connected to the middle of the rotating swing arm through a second joint bearing. Under the action of the long connecting rod, one end of the rotating swing arm rotates around the swing arm support, and the other roller end engages or disengages from the fixed plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The reciprocating hoist using the automatic locking mechanism of this invention ensures that the rollers of the pallet are always locked in the fixed plate of the column during the process of entering the car, so that the car will not suddenly sink; at the same time, it protects the steel wire rope or chain of the traction car and the main structure of the equipment, improves service life, and reduces safety hazards. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a reciprocating hoist employing the automatic locking mechanism of this utility model;

[0018] Figure 2 This is a schematic diagram of the automatic locking mechanism provided by this utility model in the locked state;

[0019] Figure 3 This is a schematic diagram of the automatic locking mechanism provided by this utility model in the unlocked state.

[0020] In the diagram: 100, car; 200, hoist column; 1, motor reducer; 2, long connecting rod; 3, rotating swing arm; 4, fixed plate; 5, swing arm; 6, first joint bearing; 7, swing arm support; 8, roller; 9, second joint bearing; 401, U-shaped slot. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0024] This utility model provides an automatic locking mechanism to prevent the car of an over-height or over-weight hoist from sinking. Please refer to [link / reference needed]. Figure 1 It is installed below the car 100; specifically, such as Figure 2 and Figure 3 As shown, it includes a motor reducer 1, and long connecting rods 2 are respectively provided on both sides of the motor reducer 1; a rotating swing arm 3 is movably connected to the end of the long connecting rod 2 away from the motor reducer 1.

[0025] The automatic locking mechanism also includes a fixed plate 4 installed on the hoist column 200. Under the action of the motor reducer 1, the long connecting rod 2 drives the rotating swing arm 3 to rotate, so that it locks or unlocks with the fixed plate 4.

[0026] When locked, the motor reducer 1 rotates forward, the two long connecting rods 2 extend outward, and drive the rotating arm 3 to rotate, so that the end of the rotating arm 3 engages and locks with the fixed plate 4; when unlocked, the motor reducer 1 rotates in reverse, the two long connecting rods 2 retract inward, and drive the rotating arm 3 to rotate, so that the end of the rotating arm 3 disengages from the fixed plate 4 and unlocks.

[0027] Furthermore, the two long connecting rods 2 are connected by a swing arm 5, and the swing arm 5 is also connected to the output shaft of the motor reducer 1.

[0028] Specifically, the middle part of the swing arm 5 is fixedly connected to the output shaft of the motor reducer 1, and the two ends of the swing arm 5 are rotatably connected to the two long connecting rods 2 through the first joint bearing 6 respectively. Under the action of the motor reducer 1, the swing arm 5 drives the two long connecting rods 2 to extend outward or retract inward synchronously.

[0029] Specifically, one end of the rotating swing arm 3 is connected to the swing arm support 7, and the other end is provided with a roller 8; under the action of the long connecting rod 2, the rotating swing arm 3 is driven to rotate around the swing arm support 7, so that the roller 8 at the other end is engaged and locked with the fixed plate 4.

[0030] In this embodiment, the fixed plate 4 is provided with a U-shaped slot 401, and the roller 8 can be engaged and locked with the U-shaped slot 401.

[0031] Furthermore, the end of the long connecting rod 2 is connected to the middle of the rotating swing arm 3 through the second joint bearing 9. Under the action of the long connecting rod 2, one end of the rotating swing arm 3 rotates around the swing arm support 7, and the other roller end is engaged or disengaged from the fixed plate 4.

[0032] This utility model adds an automatic locking mechanism to the existing hoist car, such as... Figure 1 As shown. When the car is in the lifting state, the swing arm 5 connected to the motor reducer 1 is in a vertical state, as shown. Figure 3As shown, at this time, the roller 8 is disengaged from the fixed plate 4 on the hoist column 200 (i.e., unlocked), which does not affect the lifting of the car. When the car reaches the corresponding floor, the PLC-controlled motor reducer 1 drives the swing arm 5 to rotate at a certain angle. The swing arm 5 drives the two long connecting rods 2 on the left and right to extend outward, thereby causing the rotating swing arm 3 at the other end of the long connecting rod 2 to rotate around the swing arm support 7 at a certain angle. At this time, the roller 8 will be engaged in the U-shaped slot 401 of the fixed plate 4, as shown. Figure 2 As shown, this puts it in a locked state.

[0033] In the locked state, during the process of the pallet on the floor conveyor being transported into the car 100, the rollers 8 are always locked in the U-shaped slots 401 of the fixed plate 4, preventing the car from suddenly sinking. After the pallet is fully inside the car, the PLC-controlled motor reducer 1 rotates in the opposite direction by a certain angle, returning to its original position. Figure 2 Once the switch is unlocked and the detection is restored to normal, the hoist's lifting drive motor can operate, pulling the car up and down to transport the pallet to the target floor. The reciprocating hoist employing this automatic locking mechanism can protect the traction car's wire rope or chain and the main structure of the equipment, improving service life and reducing safety hazards.

[0034] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An automatic locking mechanism for avoiding the sinking of an ultra-high and ultra-heavy elevator car, installed below the car (100), characterized in that, Including motor reducer (1), both sides of motor reducer (1) are respectively provided with long connecting rod (2); The end of long connecting rod (2) away from motor reducer (1) is movably connected with rotating swing arm (3); It also includes fixed clamping plate (4) installed on lifting machine stand column (200), under the action of motor reducer (1), long connecting rod (2) drives rotating swing arm (3) to rotate, so that it is locked or unlocked with fixed clamping plate (4); When locking, motor reducer (1) rotates forward, two long connecting rods (2) stretch outward and drive rotating swing arm (3) to rotate, so that the end of rotating swing arm (3) is embedded with fixed clamping plate (4) and locked. When unlocking, motor reducer (1) reverses, two long connecting rods (2) retract inward and drive rotating swing arm (3) to rotate, so that the end of rotating swing arm (3) is separated from fixed clamping plate (4) and unlocked.

2. An automatic locking mechanism for avoiding the sinking of an elevator car of an overspeed and overloading elevator according to claim 1, characterized in that, Two long connecting rods (2) are connected through swing rod (5), and swing rod (5) is connected with output shaft of motor reducer (1) at the same time.

3. An automatic locking mechanism for avoiding the sinking of an elevator car of an overspeed and overloading elevator according to claim 2, characterized in that, The middle part of swing rod (5) is fixedly connected with output shaft of motor reducer (1), and both ends of swing rod (5) are rotatably connected with two long connecting rods (2) through first joint bearing (6), under the action of motor reducer (1), swing rod (5) drives two long connecting rods (2) to synchronously stretch outward or retract inward.

4. The automatic locking mechanism for avoiding the sinking of the hoistway car with overheight and overloading according to claim 1, characterized in that, One end of rotating swing arm (3) is connected with swing arm support (7), and the other end is provided with roller (8); under the action of long connecting rod (2), rotating swing arm (3) is driven to rotate around swing arm support (7), so that the roller (8) at the other end is embedded with fixed clamping plate (4) and locked.

5. An automatic locking mechanism for avoiding the sinking of an elevator car of an overspeed, overloading elevator according to claim 4, characterized in that, U-shaped clamping groove (401) is formed in fixed clamping plate (4), and roller (8) can be embedded with U-shaped clamping groove (401) and locked.

6. An automatic locking mechanism for preventing the sinking of an elevator car with overheight and overloading according to claim 4, characterized in that, The end of long connecting rod (2) is connected with the middle part of rotating swing arm (3) through second joint bearing (9), under the action of long connecting rod (2), one end of rotating swing arm (3) rotates around swing arm support (7), and the other roller end is embedded with or separated from fixed clamping plate (4).

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