Trolley distance measuring device, precast component production line and trolley distance measuring method

Abstract

The present invention relates to a trolley distance measuring device, a precast component production line, and a trolley distance measuring method. The trolley distance measuring device includes: at least two distance measuring components, which are arranged at intervals and define a distance measuring space. Each distance measuring component is used to measure the distance from its own measurement starting point to the bearing surface of the trolley located in the distance measuring space; a control structure, which is communicatively connected to each distance measuring component. The control structure is used to obtain the distance from the measurement starting point of each distance measuring component to the bearing surface of the trolley, and obtain the parallelism error of the bearing surface of the trolley relative to the horizontal plane according to the distance from the measurement starting point of each distance measuring component to the bearing surface of the trolley. For the above-mentioned trolley distance measuring device, the operator can perform corresponding adjustment processing according to the parallelism error of the bearing surface of the trolley relative to the horizontal plane, so that the bearing surface of the trolley has a high parallelism relative to the horizontal plane, thereby avoiding shape deviation of the precast concrete components produced.

Description

Technical Field

[0001] The present invention relates to the technical field of precast concrete component production, and particularly to a trolley distance measuring device, a precast component production line, and a trolley distance measuring method. Background Art

[0002] An assembled building refers to a building in which a large amount of on-site operation work in the traditional construction method is transferred to a factory. Building components and fittings (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory and transported to the building construction site, and then assembled and installed on-site through reliable connection methods. Compared with the traditional building form, the assembled building has great differences in terms of structural form, construction means, etc. At the same time, it can improve the building quality, reduce the building cost, improve the construction efficiency, and enhance the environmental protection and energy-saving performance of the building. Therefore, it has a very promising development and application prospect.

[0003] As the basis for realizing the prefabrication of the main structure, the production process of precast concrete components (PC components) is mainly carried out on the production line in the factory. At present, during the production process of precast concrete components in the factory, a movable trolley is usually used to transport components such as precast concrete component molds and precast concrete components to each working station for production and processing. The existing movable trolley is usually mounted on walking drive wheels and auxiliary support wheels, and thus moves horizontally under the action of the frictional force generated by the rotation of the walking drive wheels, thereby realizing the handling of precast concrete component molds and precast concrete components.

[0004] However, due to reasons such as ground foundation settlement and wear of the walking drive wheels and auxiliary support wheels, the bearing surface of the trolley is prone to deviation relative to the horizontal plane. When the deviation is too large, it will cause the shape of the produced precast concrete components to deviate, and at the same time cause the trolley to move forward with difficulty and not smoothly. The moving speed of the trolley is relatively low, which seriously affects the production efficiency. In addition, components such as the walking drive wheels, auxiliary support wheels, and the trolley are more likely to be damaged, thus significantly increasing the production cost of precast concrete components and affecting the further promotion of assembled buildings. Summary of the Invention

[0005] Based on this, in view of the problem that the bearing surface of the trolley is prone to deviation relative to the horizontal plane, it is necessary to provide a trolley distance measuring device, a precast component production line, and a trolley distance measuring method that help to timely correct the deviation of the bearing surface of the trolley relative to the horizontal plane.

[0006] A trolley distance measuring device is used to obtain the parallelism error between the bearing surface of the trolley and the horizontal plane. The trolley distance measuring device includes:

[0007] At least two ranging components, the at least two ranging components are spaced apart and define a ranging space, and each ranging component is configured to measure the vertical distance from its own measurement starting point to the bearing surface of the trolley located in the ranging space; and

[0008] A control structure is disposed on one side of the ranging space and is communicatively connected to each ranging component. The control structure is configured to obtain the vertical distance from the measurement starting point of each ranging component to the bearing surface of the trolley, and obtain the parallelism error of the bearing surface of the trolley relative to the horizontal plane according to the vertical distance from the measurement starting point of each ranging component to the bearing surface of the trolley.

[0009] In one embodiment, the trolley ranging device includes two sets of ranging components, and the two sets of ranging components are spaced apart in the moving direction of the trolley.

[0010] In one embodiment, each ranging component includes a mounting bracket and a ranging sensing unit, and the ranging sensing unit is detachably mounted on the mounting bracket.

[0011] In one embodiment, the mounting bracket includes a mounting base and a mounting rod. One end of the mounting rod is connected to the mounting base, and the ranging sensing unit is mounted at the end of the mounting rod away from the mounting base.

[0012] In one embodiment, the trolley ranging device includes an alarm module, and the alarm module is communicatively connected to the control structure. The alarm module includes a light source component and / or a sound component.

[0013] In one embodiment, the trolley ranging device further includes a human-machine interaction module, and the human-machine interaction module is communicatively connected to the control structure.

[0014] A trolley ranging method for the above-mentioned trolley ranging device, the trolley ranging method includes the following steps:

[0015] Obtain the vertical distance from the measurement starting point of each ranging component to the bearing surface of the trolley in the ranging space;

[0016] Obtain the parallelism error of the bearing surface of the trolley relative to the horizontal plane according to the vertical distance from the measurement starting point of each ranging component to the bearing surface of the trolley.

[0017] A precast component production line includes the above-mentioned trolley ranging device.

[0018] In one embodiment, the precast component production line further includes a batching device, a trolley, and a traveling driving device. The traveling driving device and the trolley ranging device are both located below the batching device. The trolley is mounted on the traveling driving device and is located within the ranging space formed by the trolley ranging device.

[0019] In one embodiment, when the parallelism error of the bearing surface of the trolley located in the ranging space relative to the horizontal plane is not greater than a preset error, the batching device can be in an open state; when the parallelism error of the bearing surface of the trolley located in the ranging space relative to the horizontal plane is greater than the preset error, the batching device is in a stopped state.

[0020] The above-mentioned trolley ranging device can obtain the parallelism error of the bearing surface of the trolley in the ranging space relative to the horizontal plane after the trolley travels into the ranging space below the batching device. The operator can perform corresponding adjustment processing according to the parallelism error of the bearing surface of the trolley relative to the horizontal plane, so that the bearing surface of the trolley has a relatively high parallelism relative to the horizontal plane, thereby avoiding shape deviation of the produced precast concrete components, avoiding the obstruction of the trolley's movement and resulting in a decrease in the moving speed, and also extending the service life of the traveling driving wheels, auxiliary support wheels and other components in the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view of the precast component production line in an embodiment of the present invention;

[0022] Figure 2 is a side view of the precast component production line in an embodiment of the present invention;

[0023] Figure 3 is a top view of the precast component production line in an embodiment of the present invention;

[0024] Figure 4 is a structural diagram of the electrical control system of the precast component production line in an embodiment of the present invention;

[0025] Figure 5 is a flowchart of the trolley ranging method in an embodiment of the present invention.

[0026] Description of the Reference Numerals in the Drawings:

[0027] 100, precast component production line; 120, batching device; 140, trolley; 141, bearing surface; 160, traveling driving device; 180, trolley ranging device; 181, ranging component; 1812, mounting bracket; 1814, ranging sensing unit; 183, control structure; 185, alarm module; 187, human-machine interaction module; 200, precast component mold. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0034] Refer to Figures 1 to 4 , Figure 1 which shows a front view of a precast component production line in an embodiment of the present invention, Figure 2 which shows a side view of a precast component production line in an embodiment of the present invention, Figure 3 which shows a top view of a precast component production line in an embodiment of the present invention, Figure 4 is a structural diagram of an electrical control system of a precast component production line in an embodiment of the present invention.

[0035] Hereinafter, taking the precast component production line 100 as a precast concrete component production line for producing precast concrete components as an example, the structure of the precast component production line 100 will be described. This embodiment is only used as an example for illustration and will not limit the technical scope of the present application. It can be understood that in other embodiments, the precast component production line 100 can also be used for producing other workpieces, which is not limited herein.

[0036] The precast component production line 100 includes a batching device 120, a trolley 140, and a traveling driving device 160. The traveling driving device 160 is located below the batching device 120 and includes multiple groups of traveling driving wheels and auxiliary supporting wheels arranged at intervals. The trolley 140 can be mounted on the traveling driving device 160 and move under the drive of the traveling driving wheels. A bearing surface 141 capable of carrying the precast component mold 200 is formed on one side of the trolley 140 away from the traveling driving device 160. After the trolley 140 carrying the precast component mold 200 moves to directly below the batching device 120, the batching device 120 can spread the material into the precast component mold 200 of the trolley 140. It can be understood that the precast component production line 100 may also include other devices cooperating with the trolley 140 to implement different production processes of precast concrete components.

[0037] As described in the background art, due to reasons such as ground foundation settlement and wear of the traveling driving wheels and auxiliary supporting wheels, the bearing surface 141 of the trolley 140 is prone to deviation relative to the horizontal plane. When the deviation is too large, it will cause the shape of the produced precast concrete components to deviate, and at the same time cause the trolley 140 to travel blocked and not smoothly. The moving speed of the trolley 140 is low, which seriously affects the production efficiency. In addition, the traveling driving wheels, auxiliary supporting wheels, and the trolley are more likely to be damaged.

[0038] To solve the above problems, the precast component production line 100 of the present application includes a trolley distance measuring device 180. The trolley distance measuring device 180 can obtain the parallelism error of the bearing surface 141 of the trolley 140 traveling to directly below the batching device 120 relative to the horizontal plane. The operator can check the cause of the error according to the parallelism error obtained by the trolley distance measuring device 180, and perform corresponding adjustment processing on the traveling driving device 160 and the trolley 140 according to the cause of the error, so that the parallelism error of the bearing surface 141 of the trolley 140 located directly below the batching device 120 relative to the horizontal plane is less than the preset error, thereby timely avoiding problems such as shape deviation of the produced components.

[0039] Please continue to refer to Figures 1 to 4, the trolley distance measuring device 180 includes at least two distance measuring components 181 and a control structure 183. Among them, the at least two distance measuring components 181 are arranged at intervals and define a distance measuring space, and the distance measuring space is located directly below the fabricating device 120. Each distance measuring component 181 is used to measure the vertical distance from its own measurement starting point to the bearing surface 141 of the trolley 140 located in the distance measuring space. The control structure 183 is arranged on one side of the distance measuring space and is communicatively connected to each distance measuring component 181. The control structure 183 is used to obtain from the distance measuring component 181 the vertical distance from the measurement starting point of each distance measuring component 181 to the bearing surface 141 of the trolley 140, and based on the vertical distance from the measurement starting point of each distance measuring component 181 to the bearing surface 141 of the trolley 140, obtain the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane.

[0040] In this way, when the trolley 140 travels into the distance measuring space below the fabricating device 120, the trolley distance measuring device 180 can obtain the parallelism error of the bearing surface 141 of the trolley 140 in the distance measuring space relative to the horizontal plane. The operator can make corresponding adjustment processing on the trolley 140 according to the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane, so that the bearing surface 141 of the trolley 140 has a high parallelism with the horizontal plane, thereby avoiding shape deviation of the precast concrete components produced, at the same time avoiding the walking of the trolley 140 being blocked resulting in a decrease in the moving speed, and in addition, extending the service life of the walking drive wheels, auxiliary support wheels and other components in the trolley 140.

[0041] Specifically, the control structure 183 can calculate the difference between the vertical distances from the measurement starting points of every two distance measuring components 181 to the bearing surface 141 of the trolley 140, and then obtain the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane according to each difference. When the parallelism error of the bearing surface 141 of the trolley 140 located in the distance measuring space relative to the horizontal plane is not greater than the preset error, it indicates that the trolley 140 can work normally, so the fabricating device 120 can be in an open state for production operations. When the parallelism error of the bearing surface 141 of the trolley 140 located in the distance measuring space relative to the horizontal plane is greater than the preset error, it indicates that the trolley 140 cannot work normally, so the fabricating device 120 is in a closed state and production stops.

[0042] Such as Figures 1 to 3As shown, each distance measuring component 181 includes a mounting bracket 1812 and a distance measuring sensing unit 1814. The mounting bracket 1812 is supported on the ground, and the distance measuring sensing unit 1814 is detachably mounted on the mounting bracket 1812. Specifically, the mounting bracket 1812 includes a mounting base and a mounting rod. The mounting base is supported on the ground. One end of the mounting rod is connected to the mounting base, and the other end extends upward in a direction perpendicular to the ground. The distance measuring sensing unit 1814 is mounted at the end of the mounting rod away from the mounting base. In this way, the distance measuring sensing unit 1814 can be located above the bearing surface 141 of the trolley 140 under the support of the mounting bracket 1812, so as to measure the vertical distance from its own measurement starting point to the bearing surface 141 of the trolley 140. Specifically, in one embodiment, the distance measuring sensing unit 1814 is a distance measuring sensor that measures distance by emitting laser light.

[0043] Further, in some embodiments, the length of the mounting rod can be adjusted by means such as telescoping to change the vertical distance of the distance measuring sensing unit 1814 relative to the ground, so that the trolley distance measuring device 180 can be used in cooperation with trolleys 140 and cloth feeding devices 120 with different structures, and has a larger scope of application.

[0044] It can be understood that the connection manner between the distance measuring sensing unit 1814 and the mounting bracket 1812 is not limited, and different connection manners can be selected according to needs. Specifically, in some embodiments, the distance measuring sensing unit 1814 can be fixedly connected to the mounting bracket 1812 through connecting pieces such as screws. In other some embodiments, the distance measuring sensing unit 1814 can also be clamped on the mounting bracket 1812 through a snap structure.

[0045] Specifically, in some embodiments, the trolley distance measuring device 180 includes two sets of distance measuring components 181. The two sets of distance measuring components 181 are arranged at intervals in the traveling direction of the trolley 140. Each set of distance measuring components 181 includes two distance measuring components 181, and the two distance measuring components 181 in each set are arranged at intervals in a direction perpendicular to the moving direction of the trolley 140. In this way, the trolley distance measuring device 180 includes four distance measuring components 181. The four distance measuring components 181 are aligned with the four vertex positions of the trolley 140, so as to respectively measure the vertical distances from their own measurement starting points to the four vertex positions of the bearing surface 141 of the trolley 140, and then accurately obtain the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane. It can be understood that the number and setting positions of the distance measuring components 181 are not limited, and can be set according to needs to meet different requirements. For example, the number of distance measuring components 181 with different quantities can be selected according to the area size of the trolley 140, and the number of distance measuring components 181 is proportional to the area size of the trolley 140.

[0046] In some embodiments, the trolley ranging device 180 includes a human-machine interaction module 187, and the human-machine interaction module 187 includes an image display component capable of displaying images or texts. When the parallelism error between the bearing surface 141 of the trolley 140 and the horizontal plane is greater than a preset error, the control structure 183 controls the image display component to display corresponding images or texts to prompt the operator to adjust the trolley 140. When the parallelism error between the bearing surface 141 of the trolley 140 and the horizontal plane is not greater than the preset error, the control structure 183 controls the image display component to display corresponding images or texts.

[0047] In some embodiments, the trolley ranging device 180 further includes an alarm module 185. The alarm module 185 is communicatively connected to the control structure 183, and the alarm module 185 includes a light source component capable of emitting light and / or a sound component capable of emitting sounds. Thus, the control structure 183 can control the alarm module 185 to issue different forms of alarms to remind the operator of the state of the trolley 140.

[0048] Specifically, in one embodiment, the indication module includes a light source component capable of emitting light. When the parallelism error between the bearing surface 141 of the trolley 140 and the horizontal plane is greater than the preset error, the control structure 183 controls the light source component to emit light to prompt the operator to adjust the trolley 140. When the parallelism error between the bearing surface 141 of the trolley 140 and the horizontal plane is not greater than the preset error, the control structure 183 controls the light source component to stop emitting light. It can be understood that in some other embodiments, the light source component can emit lights of different colors to reflect the parallelism of the trolley 140.

[0049] Specifically, in another embodiment, the indication module includes a sound source component capable of emitting sounds. When the parallelism error between the bearing surface 141 of the trolley 140 and the horizontal plane is greater than the preset error, the control structure 183 controls the sound source component to issue an alarm to prompt the operator to adjust the trolley 140. When the parallelism error between the bearing surface 141 of the trolley 140 and the horizontal plane is not greater than the preset error, the sound source component stops issuing the alarm.

[0050] See Figure 5 , Figure 5 shows a flowchart of the trolley ranging method of the trolley ranging device according to an embodiment of the present invention.

[0051] The trolley ranging method of the above-mentioned trolley ranging device 180 includes the following steps:

[0052] S110: Obtain the vertical distance from the measurement starting point of each ranging component 181 to the bearing surface 141 of the trolley 140 in the ranging space.

[0053] Specifically, each distance measuring component 181 measures the vertical distance from its own measurement starting point to the bearing surface 141 of the trolley 140 located in the distance measuring space, and the control structure 183 obtains the vertical distance from the measurement starting point of each distance measuring component 181 to the bearing surface 141 of the trolley 140 from each distance measuring component 181.

[0054] S120: Obtain the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane according to the vertical distance from the measurement starting point of each distance measuring component 181 to the bearing surface 141 of the trolley 140.

[0055] Specifically, the control structure 183 calculates the difference between the vertical distances from the measurement starting points of every two distance measuring components 181 to the bearing surface 141 of the trolley 140, and then obtains the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane according to the above difference. Among them, the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane is the maximum value of the difference between the vertical distances from the measurement starting points of two distance measuring components 181 to the bearing surface 141 of the trolley 140.

[0056] When the parallelism error of the bearing surface 141 of the trolley 140 located in the distance measuring space relative to the horizontal plane is not greater than the preset error, the control structure 183 determines that the trolley 140 can work normally, so the control structure 183 controls the batching device 120 to be in an open state to realize the normal processing of precast concrete components.

[0057] When the parallelism error of the bearing surface 141 of the trolley 140 located in the distance measuring space relative to the horizontal plane is greater than the preset error, the control structure 183 determines that the trolley 140 cannot work normally, so the control structure 183 controls the batching device 120 to be in a closed state to avoid producing unqualified precast concrete components. At this time, the alarm module 185 issues an alarm to prompt the operator, and the operator obtains the inclination state of the trolley 140 through the human-machine interaction module 187 and adjusts the traveling drive device 160 and the trolley 140. After the adjustment is completed, the trolley distance measuring device 180 re-detects the parallelism error of the trolley 140 relative to the horizontal plane. When the parallelism error of the bearing surface 141 of the trolley 140 located in the distance measuring space relative to the horizontal plane is not greater than the preset error, the control structure 183 determines that the trolley 140 can work normally, so the control structure 183 controls the batching device 120 to be in an open state to realize the normal processing of precast concrete components. If the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane is still greater than the preset error, continue to adjust until the trolley distance measuring device 180 detects that the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane is not greater than the preset error.

[0058] The above-mentioned trolley distance measuring device 180 and the precast component production line 100 provided with the same can conveniently and quickly obtain the parallelism error of the bearing surface 141 of the trolley 140 relative to the horizontal plane through the trolley distance measuring device 180, and the parallelism error situation can be intuitively displayed on the human-machine interaction module 187, so as to remind the staff to adjust and process in time, thereby ensuring that the concrete components have high quality, ensuring the production efficiency of the entire precast component production line 100, and extending the service life of the traveling drive device 160 and the trolley 140.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0060] The above-mentioned embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A trolley ranging device for obtaining the parallelism error of the bearing surface of the trolley relative to the horizontal plane, characterized in that, The trolley distance measuring device includes: At least two distance measuring components, which are arranged at intervals and define a distance measuring space. Each distance measuring component is used to measure the vertical distance from its own measurement starting point to the bearing surface of the trolley located in the distance measuring space; and A control structure, which is arranged on one side of the distance measuring space and is communicatively connected to each distance measuring component. The control structure is used to obtain the vertical distance from the measurement starting point of each distance measuring component to the bearing surface of the trolley, and obtain the parallelism error of the bearing surface of the trolley relative to the horizontal plane according to the vertical distance from the measurement starting point of each distance measuring component to the bearing surface of the trolley; Wherein, the distance measuring component includes a mounting bracket and a distance measuring sensing unit. The mounting bracket includes a mounting base and a mounting rod. The mounting base is supported on the ground. One end of the mounting rod is connected to the mounting base, and the other end of the mounting rod extends upward in a direction perpendicular to the ground. The distance measuring sensing unit is mounted at the end of the mounting rod away from the mounting base, and the mounting rod is a telescopic rod with adjustable length.

2. The trolley distance measuring device according to claim 1, characterized in that, The trolley distance measuring device includes two groups of distance measuring components, and the two groups of distance measuring components are arranged at intervals in the moving direction of the trolley.

3. The trolley ranging device according to claim 1, wherein The trolley distance measuring device includes an alarm module, and the alarm module is communicatively connected to the control structure. The alarm module includes a light source component and / or a sound component.

4. The trolley ranging device according to claim 1, wherein The trolley distance measuring device further includes a human-machine interaction module, and the human-machine interaction module is communicatively connected to the control structure.

5. A trolley ranging method of the trolley ranging device according to any one of claims 1 to 4, characterized in that, The trolley distance measuring method includes the following steps: Obtain the vertical distance from the measurement starting point of each distance measuring component to the bearing surface of the trolley in the distance measuring space; Obtain the parallelism error of the bearing surface of the trolley relative to the horizontal plane according to the vertical distance from the measurement starting point of each distance measuring component to the bearing surface of the trolley.

6. A precast component production line, characterized in that, Including the trolley distance measuring device according to any one of claims 1 to 4.

7. The precast component production line according to claim 6, characterized in that The precast component production line further includes a batching device, a trolley and a traveling driving device. The traveling driving device and the trolley distance measuring device are both located below the batching device. The trolley is mounted on the traveling driving device and is located in the distance measuring space formed by the trolley distance measuring device.

8. The precast component production line according to claim 7, characterized in that, When the parallelism error of the bearing surface of the trolley located in the distance measuring space relative to the horizontal plane is not greater than the preset error, the batching device can be in an open state; when the parallelism error of the bearing surface of the trolley located in the distance measuring space relative to the horizontal plane is greater than the preset error, the batching device is in a stopped state.

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