Lifting car chain anti-loosening dynamic detection unit and detection device, detection method

Abstract

The present invention provides a dynamic chain anti-loosening detection device, which belongs to the technical field of chain detection equipment. It includes a mounting frame, a detection disk, a coil spring disk and a connecting rope; the coil spring disk is fixed on the mounting frame, and a rotating shaft runs through the mounting frame and the coil spring disk and is rotatably connected to the mounting frame and the coil spring disk; the detection disk is fixedly arranged on the rotating shaft; the detection disk and the coil spring disk are arranged in parallel, and a spiral spring is arranged in the coil spring disk, the inner end of the spiral spring is fixedly connected to the rotating shaft, and the outer end of the spiral spring is fixedly connected to the coil spring disk; the detection disk includes a first limiting disk and a second limiting disk arranged oppositely, and the two limiting disks are connected by a plurality of winding columns, and a first induction member is arranged on the disk surface of the second limiting disk away from the coil spring disk; a second induction member that matches the first induction member is also arranged on the mounting frame; one end of the connecting rope is fixedly connected to the winding column. The present invention has the advantages of low cost, convenient adjustment and accurate detection.

Description

Technical Field

[0001] The present invention relates to the technical field of chain detection equipment, and in particular to a dynamic detection unit, a detection device and a detection method for preventing a chain of a lifting car from loosening. Background Art

[0002] Many existing intelligent three-dimensional garage lifting devices use chain-type lifting mechanisms, which have the characteristics of simple structure and low maintenance cost. However, the chain structure is not as convenient as the wire rope traction structure to set up loose chain and broken chain detection devices. The non-contact detection technologies currently used, such as laser ranging, are expensive and have a high false alarm failure rate. The use of chain clamping combined with contact anti-loosening chains also has problems such as high noise, difficult adjustment, fast wear, and high false alarm failure rate. Therefore, it is necessary to develop a chain detection device with low cost, easy adjustment, and accurate detection. Summary of the invention

[0003] The purpose of the present invention is to provide a dynamic chain anti-loosening detection unit and a detection device for the above-mentioned problems, which have the advantages of low cost, convenient adjustment and accurate detection.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] The anti-loosening dynamic detection unit of the chain of the lifting car mainly comprises an installation holder, a detection disk, a winding spring disk, a rotating shaft and a connecting rope; the winding spring disk is fixed on the installation holder, the rotating shaft passes through the installation holder and the winding spring disk and is rotatably connected with the installation holder and the winding spring disk; the detection disk is fixedly arranged on the rotating shaft, and the detection disk is driven to rotate when the rotating shaft rotates; the detection disk and the winding spring disk are arranged in parallel, and a spiral spring is arranged in the winding spring disk, the inner end of the spiral spring is fixedly connected to the rotating shaft, and the outer end of the spiral spring is fixedly connected to the winding spring disk; the detection disk comprises a first limiting disk and a second limiting disk arranged oppositely, which are used to prevent the connecting rope from detaching from the detection disk during the winding process, and the two limiting disks are connected by a plurality of winding posts, the second limiting disk is away from the winding spring disk, and a first sensing element is arranged on the disk surface of the second limiting disk away from the winding spring disk; the installation holder is also provided with a second sensing element that matches the first sensing element for induction; one end of the connecting rope is fixedly connected to the winding post, and the other end of the connecting rope is used to connect with the lifting car.

[0006] In the present invention, preferably, a plurality of the first sensing elements are provided, and a single second sensing element is provided.

[0007] In the present invention, preferably, the first sensing element is a through hole provided on the second limiting plate, and the second sensing element is a proximity switch or a photoelectric sensor that can face the through hole.

[0008] In the present invention, preferably, a wireless communication module is further included, which is used to connect the second sensing element to the controller of the lift car for communication.

[0009] In the present invention, preferably, the coil spring disk includes a disk body and a side plate, and the disk body is provided with a side plate for limiting the spiral spring around its periphery, so that the disk body and the side plate form a space for accommodating the spiral spring; a support plate of the mounting retaining frame is vertically connected to the rotating shaft, and the support plate is parallel to the disk body and is located on the other side of the spiral spring away from the disk body.

[0010] In the present invention, preferably, the number of the first sensing elements is 6, and the 6 first sensing elements are evenly distributed on the same circumference.

[0011] On the other hand, the present invention provides a lifting car chain anti-loosening dynamic detection device, which includes 4 identical lifting car chain anti-loosening dynamic detection units, the 4 connecting ropes are used to be connected to the top four corners of the car, and the 4 mounting retaining frames are used to be installed on the top of the lifting channel.

[0012] On the other hand, the present invention provides a method for detecting the chain of a lift car to prevent loosening dynamically using the above-mentioned detection device, comprising the following steps: installing four identical dynamic detection units for preventing loosening of the chain of the lift car, installing four mounting retainers on the top of the lift passage, and installing the four mounting retainers at the same height; connecting the four connecting ropes to the four corners of the top of the car in the same way; when the lift car is at the lowest position, the spiral spring is wound around the rotating shaft, deformed, and the connecting rope is just stretched straight; in the process of the lift car gradually rising, the rebound force of the spiral spring causes the rotating shaft to rotate, thereby driving the detection disk to rotate, so that the connecting rope is gradually wound around the winding column of the detection disk, and at the same time, the first sensing element also rotates, and each time the first sensing element and the second sensing element are facing each other, the control system of the car counts once; if the counting times of the four dynamic detection units for preventing loosening of the chain of the lift car are the same, the chain is in a normal state, and if the counting times of the four dynamic detection units for preventing loosening of the chain of the lift car are different, it is judged that the chain is abnormal, and an alarm is issued through the car control system.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] The present invention monitors the rotation of the rotating disk by installing a retaining frame, a detection disk, a coil spring disk, a connecting rope, a first sensing element and a second sensing element, and by setting four identical detection units, thereby indirectly reflecting the connection status of the chain and the car, from which it can be determined whether there is an abnormality in the chain.

[0015] The invention has a simple structure and is easy to install. When in use, the resilience of the spiral spring is used to reel in the connecting rope, and no additional power is required. The detection result is accurate, and the invention is worthy of popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a dynamic chain anti-loosening detection unit of the present invention.

[0017] Figure 2 The figure is a front view of a dynamic chain anti-loosening detection unit of the present invention.

[0018] Figure 3 for Figure 2 Sectional view along AA.

[0019] Figure 4 It is a schematic diagram of the planar structure of a coil spring disk.

[0020] Figure 5 The present invention is a schematic diagram of the installation of a dynamic chain anti-loosening detection device.

[0021] Among them, 1-installing retainer, 11-support plate, 2-winding spring disc, 21-volute spring, 22-disc body, 23-side plate, 3-detection disc, 31-winding column, 32-first sensing element, 33-second limiting disc, 34-first limiting disc, 4-rotating shaft, 5-second sensing element, 6-connecting rope, 7-lifting car. DETAILED DESCRIPTION

[0022] In order to express the present invention more clearly, the present invention is further described below through specific examples.

[0023] See also Figure 1-5The present invention provides a dynamic detection unit for preventing the chain of a lift car from loosening, mainly comprising a mounting frame 1, a detection disc 3, a coil spring disc 2, a rotating shaft 4 and a connecting rope 6; the mounting frame 1 is a steel structure, which is used to provide a mounting position for the detection disc 3 and the coil spring disc 2 and to be installed on the top of the lift passage of the lift car when in use. The figure shows a typical structure thereof, which is not limited to this in specific implementation, and those skilled in the art can make adaptive adjustments. The coil spring disc 2 is fixed on the mounting frame 1, and can be fixed by welding. The rotating shaft 4 passes through the mounting frame 1 and the coil spring disc 2 and is rotatably connected with the mounting frame 1 and the coil spring disc 2. Specifically, the rotating shaft 4 passes through the center of the coil spring disc 2, and the rotatable connection can be realized by a bearing; the detection disc 3 is fixedly arranged on the rotating shaft 4, and the detection disc 3 is driven to rotate when the rotating shaft 4 rotates; the detection disc 3 and the coil spring disc 2 are arranged in parallel, and a spiral spring 21 is arranged in the coil spring disc 2, and the inner end of the spiral spring 21 is fixedly connected to the rotating shaft 4, and the outer end of the spiral spring 21 is fixedly connected to the coil spring disc 2. When the shaft 4 is rotated by an external force, the spiral spring is wound on the shaft 4. When the external force is removed, the spiral spring drives the shaft 4 to rotate under the action of the rebound force, and the shaft 4 drives the detection disk 3 to rotate. The detection disk 3 includes a first limit disk 34 and a second limit disk 33 arranged relatively to prevent the connecting rope 6 from detaching from the detection disk 3 during the winding process. The two limit disks are connected by a plurality of winding columns 31. When there is one winding column 31, its two ends are arranged at the center position of the two limit disks. When there are a plurality of winding columns 31, the plurality of winding columns 31 are evenly distributed on the same circumference, which can make the rotation more stable. The second limit disk 33 is away from the coil spring disk 2, and a first induction member 32 is arranged on the disk surface of the second limit disk 33 away from the coil spring disk 2; a second induction member 5 matching the induction member 32 is also arranged on the mounting holder 1; one end of the connecting rope 6 is fixedly connected to the winding column 31, and the other end of the connecting rope 6 is used to connect with the lifting car 7.

[0024] In the present invention, multiple first sensing members 32 can be provided, and one second sensing member 5 can be provided; specifically, the number of first sensing members 32 provided is 6, and the 6 first sensing members 32 are evenly distributed on the same circumference. More specifically, the first sensing member 32 is a through hole provided on the second limiting plate 33, and the second sensing member 5 is a proximity switch or photoelectric sensor that can face the through hole; the proximity switch or photoelectric sensor generates different signals when facing the through hole and when facing other parts, so that the rotation of the rotating disk can be identified and recorded. Multiple first sensing members 32 can increase the signal collection density and improve the accuracy of detection.

[0025] In the present invention, the second sensing element 5 needs to communicate with the controller of the lift car, therefore, the present invention preferably further includes a wireless communication module for wirelessly connecting the second sensing element 5 with the controller of the lift car for transmitting signals.

[0026] In the present invention, the spiral spring disk includes a disk body 22 and a side plate 23. The disk body 22 is provided with a side plate 23 around its periphery for limiting the spiral spring 21, so that the disk body 22 and the side plate 23 form a space for accommodating the spiral spring; a support plate 11 of the mounting retainer 1 is vertically connected to the rotating shaft 4, and the support plate 11 is parallel to the disk body 22 and is located on the other side of the spiral spring 21 away from the disk body 22.

[0027] As a specific implementation of the detection device, it includes 4 identical lifting car chain anti-loosening dynamic detection units, 4 connecting ropes 6 are used to be connected to the top four corners of the car, and 4 mounting retainers 1 are installed on the top of the lifting channel.

[0028] The method for dynamic detection of anti-loosening of a lift car chain using the above detection device comprises the following steps:

[0029] Install 4 identical lifting car chain anti-loosening dynamic detection units, install the 4 mounting retainers 1 on the top of the lifting channel, and the 4 mounting retainers 1 are installed at the same height; connect the 4 connecting ropes 6 to the top four corners of the car in the same way, such as Figure 5 As shown. When the lift car 7 descends from the highest position to the lowest position, the spiral spring is wound on the shaft 4, deformed, and the connecting rope 6 is just stretched straight; in the process of the lift car 7 gradually rising, the resilience of the spiral spring causes the shaft 4 to rotate automatically, thereby driving the detection disk 3 to rotate, so that the connecting rope 6 is gradually wound on the winding column 31 of the detection disk 3, and at the same time, the first sensing element 32 also rotates, and each time the first sensing element 32 and the second sensing element 5 are facing each other, the second sensing element 5 detects the change of the signal and sends it to the car control system, the car control system counts once, and compares the count values ​​of the four detection units; if the count times of the four lift car chain anti-loosening dynamic detection units are the same, the chain is in a normal state, if the count times of the four lift car chain anti-loosening dynamic detection units are different, it is judged that the chain is abnormal, and an alarm is issued through the car control system.

[0030] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A dynamic detection method for preventing a chain of a lifting car from loosening, characterized in that: Detection is performed based on a lift car chain anti-loosening dynamic detection device, the detection device comprising four identical lift car chain anti-loosening dynamic detection units; The anti-loosening dynamic detection unit of the lifting car chain includes an installation holder, a detection disk, a coil spring disk, a rotating shaft and a connecting rope; the coil spring disk is fixed on the installation holder, and the rotating shaft passes through the installation holder and the coil spring disk and is rotatably connected to the installation holder and the coil spring disk; the detection disk is fixedly arranged on the rotating shaft, and the detection disk is driven to rotate when the rotating shaft rotates; the detection disk and the coil spring disk are arranged in parallel, and a spiral spring is arranged in the coil spring disk, the inner end of the spiral spring is fixedly connected to the rotating shaft, and the outer end of the spiral spring is fixedly connected to the coil spring disk; the detection disk includes The first limiting plate and the second limiting plate are arranged opposite to each other, and are used to prevent the connecting rope from being separated from the detection plate during the winding process. The two limiting plates are connected by a plurality of winding posts. The second limiting plate is away from the winding spring plate, and a first induction member is arranged on the plate surface of the second limiting plate away from the winding spring plate; the mounting holder is also provided with a second induction member that matches the first induction member for induction; a plurality of the first induction members are provided, and a single second induction member is provided; one end of the connecting rope is fixedly connected to the winding post, and the other end of the connecting rope is used to be connected to the lifting car; The four connecting ropes are used to be connected to the four corners of the top of the car, and the four mounting brackets are used to be installed on the top of the lifting channel; The detection method comprises the following steps: installing four identical dynamic detection units for preventing the chain of the lifting car from loosening, installing four mounting retainers on the top of the lifting channel, and installing the four mounting retainers at the same height; connecting the four connecting ropes to the four corners of the top of the car in the same way; when the lifting car is at the lowest position, the spiral spring is wound around the rotating shaft, deformed, and the connecting rope is just stretched straight; in the process of the gradual rise of the lifting car, the rebound force of the spiral spring causes the rotating shaft to rotate, thereby driving the detection disk to rotate, so that the connecting rope is gradually wound around the winding column of the detection disk, and at the same time, the first sensing element also rotates, and each time the first sensing element and the second sensing element are facing each other, the control system of the car counts once; if the counting times of the four dynamic detection units for preventing the chain of the lifting car are the same, the chain is in a normal state, and if the counting times of the four dynamic detection units for preventing the chain of the lifting car are different, it is judged that the chain is abnormal, and an alarm is issued through the car control system.

2. The method for detecting the dynamic looseness of a chain of a lift car according to claim 1, characterized in that: The first sensing component is a through hole formed on the second limiting plate, and the second sensing component is a proximity switch or a photoelectric sensor that can face the through hole.

3. The method for dynamic detection of chain loosening of a lift car according to claim 1, characterized in that: It also includes a wireless communication module for connecting the second sensing element to a controller of the lift car.

4. The method for dynamic detection of chain loosening of a lift car according to claim 1, characterized in that: The spiral spring disk includes a disk body and a side plate. The disk body is provided with a side plate around its periphery for limiting the spiral spring, so that the disk body and the side plate form a space for accommodating the spiral spring. A support plate of the mounting retainer is vertically connected to the rotating shaft. The support plate is parallel to the disk body and is located on the side of the spiral spring away from the disk body.

5. The method for dynamic detection of chain loosening of a lift car according to claim 1, characterized in that: The number of the first induction elements is 6, and the 6 first induction elements are evenly distributed on the same circumference.

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