Deviation correction detection device for lifting device

Abstract

The utility model discloses a lifting device deviation rectification detection device which comprises a walking wheel, an encoder and a connecting arm, the walking wheel is fixedly connected to an output shaft of the encoder, and one end, close to the output shaft, of a shell of the encoder is fixedly connected to one end of the connecting arm. The other end of the connecting arm is rotationally connected to a sliding plate with a U-shaped section through a rotating shaft, a torsion elastic piece for pressing the connecting arm is arranged on the rotating shaft, it is ensured that the walking wheel abuts against the rail, the sliding plate is vertically connected to a sliding groove with the U-shaped section in a sliding mode, and the sliding groove with the U-shaped section is vertically and fixedly connected to the front end of the hoisting walking wheel frame. A screw rod is vertically arranged in the sliding groove, a vertical strip-shaped hole is formed in the groove bottom of the sliding plate, the screw rod penetrates through the vertical strip-shaped hole and then is fixedly connected with the vertical strip-shaped hole through a locking nut, and vertical limiting structures are further arranged on the two sides of the sliding plate. Deviation correction detection can be carried out on the asynchronous walking wheels of the lifting device, synchronous walking can be controlled easily, and safety accidents are reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of box girder hoisting equipment, and relates to a hoisting device correction and detection device. Background Technology

[0002] During the prefabrication of highway bridges, large hoisting equipment is required to lift the prefabricated box girders. During long-term operation of the large hoisting equipment, errors may occur in the driving motors of the power walking wheels on the two tracks, which may lead to asynchrony of the power walking wheels on both sides and easily cause safety accidents. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a hoisting device correction and detection device that can detect and correct the misalignment of the traveling wheels of the hoisting device, which is conducive to controlling synchronous movement and reducing safety accidents.

[0004] The technical solution adopted in this utility model is as follows: a lifting device correction and detection device, including a traveling wheel, an encoder and a connecting arm. The traveling wheel is fixedly connected to the output shaft of the encoder. The end of the encoder housing near the output shaft is fixedly connected to one end of the connecting arm. The other end of the connecting arm is rotatably connected to a sliding plate with a U-shaped cross section through a rotating shaft. A torsional elastic element is provided on the rotating shaft to press the connecting arm and ensure that the traveling wheel abuts against the track. The sliding plate is vertically slidably connected to a sliding groove with a U-shaped cross section. The sliding groove with a U-shaped cross section is vertically fixedly connected to the front end of the lifting traveling wheel frame. A screw is vertically arranged in the groove. A vertical strip hole is provided at the bottom of the sliding plate groove. After the screw passes through the vertical strip hole, it is fixedly connected by a locking nut. Vertical limiting structures are also provided on both sides of the sliding plate.

[0005] Furthermore, the aforementioned vertical limiting structure includes a panel, a stud, a compression spring, and a limiting nut. The front ends of the side panels of the slide are provided with embedded serrated grooves. One end of the panel is provided with a tooth that matches one of the grooves of the embedded serrated groove. The other end of the panel is fixedly connected to a stud. The stud passes through a support plate vertically set on the outer side of the sliding plate and is connected to the limiting nut. The compression spring is sleeved on the stud and its two ends can easily abut against the end of the panel and one side of the support plate.

[0006] Furthermore, the aforementioned torsional elastic element includes two torsional spring segments, with the two free ends of the two torsional spring segments connected as a single unit to form an inverted U-shaped pressing part. The other two free ends of the two torsional spring segments are L-shaped, and the two ends are respectively embedded into the grooves provided on the side of the sliding plate.

[0007] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model uses two sets of lifting wheels installed at the front end of the lifting wheel frame, which enables the asynchronous movement of the two driving wheels. This allows for the detection and correction of the wheels that are not synchronized with the lifting device, which is beneficial for controlling synchronous movement and reducing safety accidents. The elastic pressing of the connecting arm ensures the stability and reliability of the wheels. The vertical strip hole and screw nut allow for the vertical height adjustment of the sliding plate, thereby enabling the adjustment of the torsional pressing elastic force. On the one hand, this avoids excessive force on the wheels, which could lead to excessive friction and damage to the encoder output shaft. On the other hand, it avoids insufficient force on the wheels, which could prevent reliable contact with the guide rail and result in large measurement errors, which would be detrimental to correction. Attached Figure Description

[0008] Figure 1 A schematic diagram of the lateral installation structure of the lifting device correction and detection device;

[0009] Figure 2 A schematic diagram of the side cross-sectional structure of the lifting device correction and detection device;

[0010] Figure 3 A schematic diagram of the side structure of the lifting device's alignment detection device;

[0011] Figure 4 This is a top view schematic diagram of the lifting device's correction and detection device. Detailed Implementation

[0012] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] Example 1: As Figure 1-4As shown, the lifting device's deviation correction and detection device includes a traveling wheel 1, an encoder 2, and a connecting arm 3. The traveling wheel 1 is fixedly connected to the output shaft of the encoder 2. The housing of the encoder 2 is fixedly connected to one end of the connecting arm 3 near the output shaft. The other end of the connecting arm 3 is rotatably connected to a U-shaped sliding plate 5 via a rotating shaft 4. A torsional elastic element 6 is provided on the rotating shaft 4 to press the connecting arm 3 and ensure that the traveling wheel 1 abuts against the track 19. The sliding plate 5 is vertically slidably connected to a U-shaped groove 7. The U-shaped groove 7 is vertically fixedly connected to the front end of the lifting traveling wheel frame 8. The groove 7 is vertically oriented... The sliding plate 5 is equipped with a screw 9 and a vertical strip hole 10 at the bottom of the groove. The screw 9 passes through the vertical strip hole 10 and is fixedly connected by a locking nut 11. A vertical limiting structure is also provided on both sides of the sliding plate 5, which can realize the vertical positioning of the sliding plate and then lock it with a locking nut. The height is quickly adjustable. In use, two sets of lifting device correction detection devices are installed at the front end of the lifting walking wheel frame 8 of the two power walking wheels 20. By monitoring the displacement difference on both sides, the drive motors of the power walking wheels 20 on both sides are controlled to move at different speeds, thereby achieving synchronization and achieving the purpose of correcting the power walking wheels 20.

[0014] To enable rapid positioning, the vertical limiting structure includes a plate 12, a stud 13, a compression spring 14, and a limiting nut 15. The front ends of the side panels of the slide groove 7 are provided with serrated grooves 16. One end of the plate 12 has a tooth 17 that matches one of the grooves in the serrated groove 16. The other end of the plate 12 is fixedly connected to the stud 13. The stud 13 passes through a support plate 18 vertically positioned on the outer side of the sliding plate 5 and is then connected to the limiting nut 15. The compression spring 14 is sleeved on the stud 13, and both ends conveniently abut against the ends of the plate 12 and the support plate 15. On one side of plate 18, the height can be adjusted by setting a certain spacing through the embedded serrated groove and the elastic telescopic insert. When adjusting up and down, loosen the locking nut, pull the insert out of the embedded serrated groove, move the sliding plate up and down to the appropriate position, and then lock the insert into the embedded serrated groove. The locking nut is used to lock and adjust, which is convenient and quick. The compression spring can stabilize the tight fit between the embedded serrated groove and the insert. The limit nut can adjust the space of the stud and limit it. After adjusting up and down, loosen the limit nut and push the stud into the embedded serrated groove.

[0015] To achieve torsional reliability, the torsional elastic element 6 includes two torsional spring segments 601. The two free ends of the two torsional spring segments 601 are connected as one piece to form an inverted U-shaped pressing part 602. The other two free ends of the two torsional spring segments 601 are L-shaped, and the two ends are respectively embedded in the grooves 603 provided on the side of the sliding plate 5. The use of an integrated double-segment symmetrically arranged torsional spring pressing connecting arm can achieve the stability and reliability of torsional pressing, improve the stability of roller travel, and thus achieve the accuracy of rotary encoder displacement measurement.

[0016] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A hoisting device correction and detection device, characterized in that: The device includes a walking wheel (1), an encoder (2), and a connecting arm (3). The walking wheel (1) is fixedly connected to the output shaft of the encoder (2). The housing of the encoder (2) is fixedly connected to one end of the connecting arm (3) near the output shaft. The other end of the connecting arm (3) is rotatably connected to the sliding plate (5) with a U-shaped cross section via a rotating shaft (4). The rotating shaft (4) is provided with a torsional elastic element (6) that presses the connecting arm (3) and ensures that the walking wheel (1) abuts against the track (19). The sliding plate (5) is vertically slidably connected to the slide groove (7) with a U-shaped cross section. The slide groove (7) with a U-shaped cross section is vertically fixedly connected to the front end of the hoisting walking wheel frame (8). A screw (9) is vertically installed in the groove of the slide groove (7). A vertical strip hole (10) is provided at the bottom of the groove of the sliding plate (5). The screw (9) passes through the vertical strip hole (10) and is fixedly connected by a locking nut (11). Vertical limiting structures are also provided on both sides of the sliding plate (5).

2. The hoisting device correction and detection device according to claim 1, characterized in that: The vertical limiting structure includes a panel (12), a stud (13), a compression spring (14), and a limiting nut (15). The front end of the side wall panels of the slide groove (7) is provided with an inlaid serrated groove (16). One end of the panel (12) is provided with an insert tooth (17) that matches one groove of the inlaid serrated groove (16). The other end of the panel (12) is fixedly connected to a stud (13). The stud (13) passes through the support plate (18) vertically set on the outside of the side plate of the sliding plate (5) and is connected to the limiting nut (15). The compression spring (14) is sleeved on the stud (13) and its two ends are conveniently abutted against the end of the panel (12) and the side of the support plate (18).

3. The hoisting device correction and detection device according to claim 1, characterized in that: The torsion elastic element (6) includes two torsion spring segments (601), the two free ends of the two torsion spring segments (601) are connected as one to form an inverted U-shaped pressing part (602), and the other two free ends of the two torsion spring segments (601) are L-shaped, and the two ends are respectively embedded in the grooves (603) provided on the side of the sliding plate (5).

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