Movable package stacking dip angle detection device and dip angle detection method

Abstract

The invention relates to a movable package stacking inclination angle detection device which comprises a device frame with walking wheels arranged at the bottom, a lifting platform is arranged on the device frame, a measuring rod is hinged to the upper end of the lifting platform, and a laser distance measuring sensor is arranged at the end, away from the hinge axis, of the measuring rod. The laser emitting direction of the laser distance measuring sensor is consistent with the length extending direction of the measuring rod, the upper end of the lifting platform is provided with a horizontal datum plane, and the measuring rod is provided with a horizontal datum measuring station with the lower end supported on the horizontal datum plane. The stacking inclination angle detection device further comprises an angle measuring device used for detecting the inclination angle of the measuring rod relative to the horizontal datum plane. The invention provides the movable package stack inclination angle detection device capable of measuring the package stack inclination angle and the inclination angle detection method using the movable package stack inclination angle detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of package stacking safety supervision, and in particular to a movable package stacking inclination angle detection device and an inclination angle detection method. Background Art

[0002] Packaging stack collapse accidents usually occur in warehousing environments, especially in industrial production, logistics and transportation, commodity retail and other industries. When items are stored in stacks, stack collapse accidents may be caused by unreasonable stacking design, improper stacking, overload stacking, stacking center of gravity offset, storage environment changes (such as changes in cargo volume caused by humidity and temperature), foundation settlement, earthquakes and other natural disasters or human operational errors.

[0003] The collapse of packaging stacks is a serious warehousing safety accident, and its harmfulness is reflected in multiple aspects: first, it may cause direct casualties, especially in labor-intensive warehousing environments, where the huge impact force of stack collapse will pose a great threat to the life safety of nearby personnel; second, it will cause a large amount of material loss, with significant direct economic losses, and accompanied by a series of additional costs such as cleaning and repair; in addition, if the collapsed stack contains dangerous chemicals or other harmful substances, it is likely to cause environmental pollution and cause lasting damage to the soil, water sources and ecology; third, the collapse of the stack will interrupt the normal production and logistics operation process, seriously affect the efficiency of the supply chain, and bring immeasurable indirect economic losses; finally, such accidents may also trigger a series of legal liability issues and a crisis of public confidence in safety management, posing challenges to corporate reputation and social stability. Therefore, effectively preventing stack collapse accidents and improving the level of safety management are the focus of work that all relevant companies and units must attach great importance to and continue to work hard on.

[0004] In recent years, with the rapid development of the national social demand for emergency material reserves, the overall scale of packaging warehouses has become larger and larger, and the risk of stack collapse has also increased. As we all know, stacks are more likely to collapse after tilting, and stacks with vertical sides are generally stable. Obviously, the inclination angle of the stack is a key indicator for evaluating the degree of inclination of the stack and its stability. For the development of real-time monitoring systems for stack collapse prevention or related research work, how to measure the inclination angle of the stack has become the first problem to be solved. The outer surface of the stack is uneven and the area is large. Using existing technical means, it is inconvenient to measure the inclination between any two points, which has become a technical problem that needs to be solved urgently.

[0005] A tilt sensor is a measuring device designed to detect the change in the tilt angle of an object relative to a horizontal or vertical plane. It is widely used in various scenarios that require accurate angle measurement, especially in engineering, construction, aerospace, robotics, geological monitoring, vehicle stability systems, navigation equipment and other systems that need to monitor attitude or tilt. Tilt sensors can be used to measure the inclination of a plane. Since the outer surface of the stack is large and uneven, simply using a tilt sensor to measure the inclination of the stack is obviously not applicable.

[0006] After consulting the literature, it was found that the existing packaging stacking inclination detector needs to be installed and fixed on the wall and contact the stack for measurement. This method is suitable for single-point measurement. For large-scale and wide-area stacking, a large number of measurement points need to be arranged on site, which is obviously very difficult and has low detection efficiency. Summary of the invention

[0007] The object of the present invention is to provide a movable packaging stack inclination detection device capable of measuring the inclination of packaging stack; the object of the present invention is also to provide an inclination detection method using the movable packaging stack inclination detection device.

[0008] In order to solve the above technical problems, the technical solution of a movable packaging stacking inclination measuring device in the present invention is as follows:

[0009] A movable packaging stack inclination detection device comprises a device frame with walking wheels at the bottom, a lifting platform is arranged on the device frame, a measuring rod is hinged at the upper end of the lifting platform, a laser ranging sensor is arranged at the end of the measuring rod away from its hinge axis, the laser emitting direction of the laser ranging sensor is consistent with the length extension direction of the measuring rod, the stacking inclination detection device also comprises an angle measuring device for detecting the inclination angle of the measuring rod relative to a horizontal reference plane, the upper end of the lifting platform has a horizontal reference plane, and the measuring rod has a horizontal reference measurement station with its lower end supported on the horizontal reference plane.

[0010] Furthermore, a scissor-type lifting mechanism is provided between the device frame and the lifting platform to drive the lifting platform up and down.

[0011] Furthermore, the scissor-type lifting mechanism includes a first support arm and a second support arm cross-arranged through a central hinge axis, the upper end of the second support arm is hingedly connected to the bottom of the lifting platform, the lower end of the second support arm is hingedly connected to the device frame, the upper end of the first support arm is hingedly connected to the bottom of the lifting platform, the lower end of the first support arm is hinged on the sliding block, the sliding block is guided and moved along the left and right directions and assembled on the device frame, and a sliding block driving mechanism for driving the sliding block to move left and right is provided on the device frame.

[0012] Furthermore, the sliding block driving mechanism includes a horizontally arranged driving cylinder, a cylinder body of the driving cylinder is fixed on the device frame, and a piston rod of the driving cylinder is connected to the sliding block.

[0013] Furthermore, the angle measuring device is an inclination sensor arranged on the measuring rod.

[0014] Furthermore, a vertically arranged push rod is provided on the device frame, a reel bracket is provided on the push rod, a reel is rotatably mounted on the reel bracket, a measuring rod pull rope connected to the measuring rod is wound on the reel, a ratchet pawl mechanism is provided between the reel and the reel bracket, and a reel crank handle is also connected to the reel.

[0015] Furthermore, the reel support gradually extends upward from right to left, and the reel is arranged at the left end of the reel support.

[0016] The technical solution of the inclination angle measurement method in the present invention is:

[0017] Measure the inclination angle α between the side of the packaging stack and the vertical direction. The side of the packaging stack is the measured side. In the first step, two measuring points on the side of the packaging stack are selected, namely point A and point B, where point A is located below point B. Adjust the device frame so that the hinge axis of the measuring rod is parallel to the measured side. In the second step, fix the position of the device frame and adjust the height of the lifting platform so that the height of the horizontal reference plane is consistent with the height of point A. The measuring rod is in the horizontal reference measuring station with the lower end supported on the horizontal reference plane. Point A is in the length extension direction of the measuring rod. The distance between point A and the laser distance sensor is d1. In the third step, rotate the measuring rod so that point B is in the length extension direction of the measuring rod. The distance between point B and the laser distance sensor is d2. At this time, the inclination angle of the measuring rod relative to the horizontal reference plane is β.

[0018] but

[0019] Where d is the length of the measuring rod.

[0020] The beneficial effects of the present invention are as follows: when the present invention is in use, it is only necessary to move the device frame to the side of the packaging stack to be measured, adjust the device frame so that the axis of the measuring rod is parallel to the side to be measured, and by rotating the measuring rod so that the measuring points A and B are respectively in the direction of the length extension of the measuring rod, the inclination angle of the side to be measured where A and B are located can be detected, the stacking quality can be judged in time, the inclination angle of the stack can be adjusted in time, and the occurrence of stack collapse accidents can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 Schematic diagram of the state when the middle measuring rod measures point B;

[0024] Figure 3 It is the use principle diagram of the present invention;

[0025] 1. Traveling wheel; 2. Device frame; 3. First support arm; 4. Scissor-type lifting mechanism; 5. Lifting platform; 6. Horizontal reference plane; 7. Second support arm; 8. Laser distance sensor; 9. Measuring rod; 10. Inclination sensor; 11. Measuring rod pull rope; 12. Reel; 13. Reel crank; 14. Push rod; 15. Drive cylinder; 16. Sliding block; 17. Slide; 18. Reel bracket; 19. Packaging stack; 20. Measured side; 21. Ground; 22. Pin shaft. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] An embodiment of a movable packaging stacking inclination angle detection device of the present invention is as follows: Figures 1 to 3 As shown:

[0029] The device frame 2 comprises a travel wheel 1 at the bottom, and a vertically arranged push rod 14 is arranged at the right end of the device frame 2.

[0030] Left and right lifting platforms 5 are arranged on the device frame, and a measuring rod 9 is hinged on the right end of the lifting platform 5 through a pin shaft 22. The axial direction of the pin shaft is extended in the front-rear direction, and a laser ranging sensor 8 is arranged on the left end of the measuring rod. The laser emitting direction of the laser ranging sensor 8 is consistent with the length extension direction of the measuring rod 9. The upper end of the lifting platform has a horizontal reference plane 6, and the measuring rod 9 has a horizontal reference measuring station whose lower end is supported on the horizontal reference plane. The stacking inclination angle detection device also includes an angle measuring device for detecting the inclination angle of the measuring rod relative to the horizontal reference plane.

[0031] In this embodiment, the angle measuring device is an inclination sensor 10 arranged on the measuring rod. In other embodiments of the present invention, the angle measuring device can also be a protractor arranged on a device frame, and the angle between the measuring rod and the horizontal reference plane is measured by the protractor.

[0032] A drum holder 18 is provided on the push rod 14, and the drum holder 18 gradually extends upward from right to left. The left end of the drum holder is rotatably equipped with a drum 12, and a measuring rod pull rope 11 connected to the left end of the measuring rod is wound on the drum 12. A ratchet and pawl mechanism is provided between the drum and the drum holder. The ratchet and pawl mechanism is a prior art, which includes a pawl and a ratchet wheel matched with the pawl. The ratchet wheel is coaxially fixed on the drum, and can achieve locking of the drum after it is rotated into place. A drum crank handle 13 is also connected to the drum, and the drum holder gradually extends upward from right to left. The drum is provided at the left end of the drum holder. When in use, torque is applied to the reel through the reel crank 13, so that the reel is rotated. During the rotation of the reel, the rope collection operation of the measuring rod rope is realized, so that the measuring rod is rotated to a certain angle and positioned at the corresponding angle. When the measurement is completed, the locking of the ratchet wheel by the pawl can be released, and the left end of the measuring rod 9 swings downward under the action of its own weight, and finally swings to the horizontal reference measurement position where the measuring rod is supported on the horizontal reference plane. Of course, a magnetic attraction structure can still be set between the measuring rod and the device frame. The magnetic system structure includes a magnet and a magnetic system matching part for adsorption and matching with the magnet. The magnet is set on the measuring rod / device frame, and the magnetic system matching part is set on the corresponding device frame / measuring rod. To constrain the measuring rod to the horizontal reference measurement position, it is convenient for the measuring rod to not shake during the movement of the device frame. When the left end of the measuring rod needs to swing, the magnetic attraction of the magnetic system structure is overcome by the tension of the measuring rod rope.

[0033] A scissor-type lifting mechanism 4 for driving the lifting platform to move up and down is arranged between the device frame and the lifting platform. The scissor-type lifting mechanism 4 includes a first support arm and a second support arm cross-arranged through a central hinge axis. The upper end of the second support arm 7 is hingedly connected to the bottom of the lifting platform, and the lower end of the second support arm 7 is hingedly connected to the device frame. The upper end of the first support arm 3 is hingedly connected to the bottom of the lifting platform, and the lower end of the first support arm 3 is hinged on the sliding block 16. The sliding block is guided to move in the left and right directions and is assembled in the sliding groove 17 on the device frame. The guiding direction of the sliding groove extends along the left and right directions. A sliding block driving mechanism for driving the sliding block to move left and right is arranged on the device frame.

[0034] The sliding block driving mechanism includes a horizontally arranged driving cylinder 15, the cylinder body of the driving cylinder 15 is fixed on the device frame, and the piston rod of the driving cylinder is connected to the sliding block. When in use, when the height of the lifting platform needs to be raised, the piston rod of the driving cylinder is extended, the sliding block moves to the left, and the lifting platform moves horizontally to rise; when the height of the lifting platform needs to be lowered, the piston rod of the driving cylinder is retracted, the sliding block moves to the right, and the lifting platform moves horizontally to fall.

[0035] The method for using the movable packaging stacking inclination angle detection device of the present invention is as follows:

[0036] Measure the inclination angle α between the side of the packaging stack and the vertical direction. The side of the packaging stack 19 is the measured side 20. In the first step, two measuring points on the side of the packaging stack are selected, namely point A and point B, where point A is located below point B; adjust the device frame so that the hinge axis of the measuring rod is parallel to the measured side; in the second step, fix the position of the device frame, adjust the height of the lifting platform so that the height of the horizontal reference plane is consistent with the height of point A, and the measuring rod is in the horizontal reference measuring station with the lower end supported on the horizontal reference plane. Point A is in the length extension direction of the measuring rod, and the distance between the laser ranging sensor and point A is d1; in the third step, rotate the measuring rod so that point B is in the length extension direction of the measuring rod, and the distance between the laser ranging sensor and point B is d2. At this time, the inclination angle of the measuring rod relative to the horizontal reference plane is β.

[0037] but

[0038] Where d is the length of the measuring rod.

[0039] The reasoning process of the above formula is:

[0040]

[0041] Δh=(d2+d)sinβ(2)

[0042] Δd=(d1+d)-(d2+d)cosβ(3)

[0043] Arranged:

[0044]

[0045] In the above formula, d1 is the distance between the laser ranging sensor and point A; d2 is the distance between the laser ranging sensor and point B; d is the distance between the laser ranging sensor and the hinge axis of the measuring rod, that is, the length of the measuring rod;.

[0046] In the formula, △h represents the height difference between point A and point B; △d represents the distance from point A to point B in the left and right horizontal directions.

[0047] An implementation example of an inclination angle detection method using the movable packaging stacking inclination angle detection device is as follows: Figures 1 to 3 As shown, the inclination angle measurement method includes the following steps, measuring the inclination angle α between the side surface of the packaging stack and the vertical direction, the side surface of the packaging stack is the measured side surface, the first step, selecting two measuring points on the side surface of the packaging stack, namely point A and point B, point A is located on the lower side of point B; adjusting the device frame so that the hinge axis of the measuring rod is parallel to the measured side surface; the second step, fixing the position of the device frame, adjusting the height of the lifting platform so that the height of the horizontal reference plane is consistent with the height of point A, the measuring rod is in a horizontal reference measuring station with the lower end supported on the horizontal reference plane, point A is in the length extension direction of the measuring rod, and the distance between the laser distance sensor and point A is d1; the third step, rotating the measuring rod so that point B is in the length extension direction of the measuring rod, and the distance between the laser distance sensor and point B is d2, at this time the inclination angle of the measuring rod relative to the horizontal reference plane is β,

[0048] but

[0049] Where d is the length of the measuring rod.

[0050] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0051] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0052] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A movable packaging stacking inclination angle detection device, characterized in that: The invention comprises a device frame with walking wheels at the bottom, a lifting platform is arranged on the device frame, a measuring rod is hinged at the upper end of the lifting platform, a laser ranging sensor is arranged at the end of the measuring rod away from its hinge axis, the laser emitting direction of the laser ranging sensor is consistent with the length extension direction of the measuring rod, the upper end of the lifting platform has a horizontal reference plane, the measuring rod has a horizontal reference measuring station with its lower end supported on the horizontal reference plane, and the stacking inclination angle detection device also comprises an angle measuring device for detecting the inclination angle of the measuring rod relative to the horizontal reference plane.

2. The movable packaging stacking inclination angle detection device according to claim 1 is characterized in that: A scissor-type lifting mechanism for driving the lifting platform to move up and down is arranged between the device frame and the lifting platform.

3. The movable packaging stacking inclination angle detection device according to claim 2 is characterized in that: The scissor-type lifting mechanism includes a first support arm and a second support arm which are cross-arranged through a central hinge axis, the upper end of the second support arm is hingedly connected to the bottom of the lifting platform, the lower end of the second support arm is hingedly connected to the device frame, the upper end of the first support arm is hingedly connected to the bottom of the lifting platform, the lower end of the first support arm is hingedly connected to the sliding block, the sliding block is guided and moved along the left and right directions and assembled on the device frame, and a sliding block driving mechanism for driving the sliding block to move left and right is arranged on the device frame.

4. The movable packaging stacking inclination angle detection device according to claim 3 is characterized in that: The sliding block driving mechanism comprises a horizontally arranged driving cylinder, a cylinder body of the driving cylinder is fixed on a device frame, and a piston rod of the driving cylinder is connected to the sliding block.

5. The movable packaging stacking inclination angle detection device according to claim 1 is characterized in that: The angle measuring device is an inclination sensor arranged on a measuring rod.

6. The movable packaging stacking inclination angle detection device according to any one of claims 1 to 5, characterized in that: A vertically arranged push rod is provided on the device frame, a reel bracket is provided on the push rod, a reel is rotatably mounted on the reel bracket, a measuring rod pull rope connected to the measuring rod is wound on the reel, a ratchet pawl mechanism is provided between the reel and the reel bracket, and a reel crank handle is also connected to the reel.

7. The movable packaging stacking inclination angle detection device according to claim 6 is characterized in that: The reel support gradually extends upward from right to left, and the reel is arranged at the left end of the reel support.

8. A method for detecting an inclination angle using the movable packaging stacking inclination angle detection device according to any one of claims 1 to 7, characterized in that: Measure the inclination angle α between the side of the packaging stack and the vertical direction. The side of the packaging stack is the measured side. In the first step, two measuring points on the side of the packaging stack are selected, namely point A and point B, where point A is located below point B. Adjust the device frame so that the hinge axis of the measuring rod is parallel to the measured side. In the second step, fix the position of the device frame and adjust the height of the lifting platform so that the height of the horizontal reference plane is consistent with the height of point A. The measuring rod is in the horizontal reference measuring station with the lower end supported on the horizontal reference plane. Point A is in the length extension direction of the measuring rod. The distance between point A and the laser distance sensor is d1. In the third step, rotate the measuring rod so that point B is in the length extension direction of the measuring rod. The distance between point B and the laser distance sensor is d2. At this time, the inclination angle of the measuring rod relative to the horizontal reference plane is β. but Where d is the length of the measuring rod.

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