A mother-daughter transport vehicle

Abstract

The utility model discloses a kind of mother and child transport vehicles, belong to iron construction prefabricated product transport technical field, mother car includes mother car frame and is set on the mother car frame mother car travelling mechanism and mother car positioning mechanism;The child car includes child car frame and is set on the child car frame child car travelling mechanism, child car positioning mechanism and mould jacking mechanism;The mother car travelling mechanism and child car travelling mechanism all include several groups of walking wheel that are spaced apart, can drive mother car and child car smoothly move on broken rail track or not horizontal track;The mother car positioning mechanism and child car positioning mechanism are respectively used for positioning the walking position of mother car and child car.The utility model of a kind of mother and child transport vehicles can effectively solve the problems, such as the existing technology's mother and child transport vehicle cannot adapt broken rail track, not horizontal track transport, influence transport efficiency even the occurrence of derailment accident etc.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated railway construction transportation technology. Specifically, it relates to a mother-daughter transport vehicle. Background Technology

[0002] With the rapid advancement of urbanization in my country, the construction of urban and intercity rail transit systems is in full swing. In these constructions, track slabs are an indispensable and crucial component of modern rail transit. They are prefabricated reinforced concrete structural slabs used to support and fix the tracks, transferring the train's load to the foundation and maintaining the track's stability and geometry. To ensure the performance of track slabs, high-strength, impermeable concrete is typically used in production, and specialized track slab molds are employed for precise molding. This high-quality production process provides a solid guarantee for the safe and stable operation of rail transit.

[0003] Steam curing is an indispensable process in the production of precast concrete track slabs. The specific process involves pouring concrete into the mold cavity, then transporting the concrete-filled mold to a steam curing shed via a mother-and-child vehicle. This process must be carried out as soon as possible after concrete pouring to ensure the concrete reaches the required steam curing temperature quickly; this step is crucial for improving the overall quality of the track slab. Inside the curing kiln, two mold support frames support the concrete-pouring molds, and a child vehicle track is located between these frames for transport. The child vehicle track inside the curing kiln is constantly exposed to high-temperature steam, causing partial bending. Additionally, when the child vehicle detaches from the mother vehicle and moves onto the child vehicle track, there is a gap between the mother vehicle track and the child vehicle track. The mother vehicle track in front of the curing kiln bears the weight of the mother and child vehicles and the mold after concrete pouring, leading to bending over time. All of these factors prevent the existing mother-and-child transport vehicles from moving smoothly on either the mother vehicle track or the child vehicle track, affecting transport efficiency and even causing derailment accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a mother-daughter transport vehicle to address the aforementioned shortcomings, thereby solving the problems of existing mother-daughter transport vehicles being unable to adapt to transport on broken or uneven tracks, affecting transport efficiency and even causing derailment accidents. To achieve the above objective, this utility model provides the following technical solution:

[0005] A mother-daughter transport vehicle includes a mother car and a daughter car movably mounted on the mother car. The mother car drives the daughter car to the front of the curing kiln, and the daughter car can detach from the mother car and drive the mold into the curing kiln. The mother car includes a mother car frame and a mother car traveling mechanism and a mother car positioning mechanism mounted on the mother car frame. The daughter car includes a daughter car frame and a daughter car traveling mechanism, a daughter car positioning mechanism, and a mold lifting mechanism mounted on the daughter car frame. Both the mother car traveling mechanism and the daughter car traveling mechanism include several sets of spaced-apart traveling wheels, which can drive the mother car and the daughter car to move smoothly on broken rails or non-level rails. The mother car positioning mechanism and the daughter car positioning mechanism are used to position the traveling positions of the mother car and the daughter car, respectively. The mold lifting mechanism is used to lift the mold off the mold support frame and lower the mold to stop on the mold support frame.

[0006] Furthermore, the mother car traveling mechanism also includes two mother car drive motors; the several sets of traveling wheels of the mother car traveling mechanism are two sets of mother car driving wheels and two sets of mother car driven wheels set on the mother car frame, with the two sets of mother car driven wheels set between the two sets of mother car driving wheels; the two mother car drive motors drive the mother car driving wheels to rotate; the two sets of mother car driven wheels are rotatably connected to the mother car frame through a bearing structure.

[0007] Furthermore, the vehicle travel mechanism also includes a vehicle drive motor; the vehicle travel mechanism has several sets of travel wheels, which are two sets of vehicle drive wheels and one set of vehicle driven wheels mounted on the vehicle frame; the vehicle drive motor is equipped with a transmission device for driving the two sets of vehicle drive wheels to rotate in the same direction.

[0008] Furthermore, the transmission device includes a driving gear and two driven gears; the driving gear is fixedly connected to the output end of the subcar drive motor and meshes between the two driven gears; the two driven gears are respectively connected to each set of subcar driving wheels.

[0009] Furthermore, the subcar traveling mechanism also includes a subcar winding drum; the subcar winding drum is equipped with a steel wire rope; the subcar winding drum is driven to rotate by a geared motor; one end of the steel wire rope is fixedly connected to the subcar winding drum, and the other end is fixedly connected to the mother car frame.

[0010] Furthermore, the mother car positioning mechanism includes positioning pins and telescopic cylinders disposed on both sides of the mother car frame; the telescopic cylinders drive the positioning pins to extend and retract vertically to the side of the mother car frame, and cooperate with the pin holes in front of the curing kiln to accurately position the mother car.

[0011] Furthermore, the mother car positioning mechanism also includes a mother car metal sensor installed at one end of the mother car frame, and a corresponding metal positioning sheet that can be sensed by the mother car metal sensor is provided in front of the curing kiln.

[0012] Furthermore, the subcar positioning mechanism includes a subcar metal sensor installed at one end of the subcar frame, and a corresponding metal positioning sheet that can be sensed by the subcar metal sensor is provided inside the curing kiln.

[0013] Furthermore, the mold lifting mechanism includes lifting cylinders located at the four corners of the subcar frame; each lifting cylinder is provided with a conical protrusion, and correspondingly, four concave holes are provided below the mold; the lifting cylinders lift the conical protrusions and the concave holes.

[0014] Furthermore, it also includes a controller; the controller is electrically connected to the slave vehicle drive motor, the mother vehicle drive motor, the slave vehicle metal sensor, the mother vehicle metal sensor, the geared motor, the telescopic cylinder, and the lifting cylinder, respectively.

[0015] The beneficial effects of this utility model are:

[0016] This utility model provides a mother-daughter transport vehicle. By setting independent drive systems for the daughter and mother vehicles, and equipping each vehicle with two or more sets of wheels, the daughter vehicle has two sets of driving wheels and one set of driven wheels evenly spaced, and the mother vehicle has two sets of driving wheels and two sets of driven wheels evenly spaced. The evenly spaced sets of wheels ensure that the mother and daughter vehicles can move smoothly on imperfectly level tracks, avoiding the problem of stopping due to the driving wheels spinning. When the daughter vehicle moves from the mother vehicle to the daughter vehicle track inside the curing kiln, it can move smoothly even if there is a large gap between the daughter vehicle track on the mother vehicle and the daughter vehicle track inside the curing kiln. In addition, the mother vehicle track and daughter vehicle track are often assembled from multiple track sections. Long-term load-bearing stress can lead to rail breakage at the assembly points and other parts under long-term stress. Both the daughter vehicle and mother vehicle can move smoothly within a certain range of rail breakage gaps with the cooperation of the spaced sets of wheels. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mother car structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the sub-vehicle structure of this utility model;

[0019] In the attached diagram: 1-Mother car frame, 2-Mother car drive wheel, 3-Mother car driven wheel, 4-Mother car drive motor, 5-Positioning pin, 6-Telescopic cylinder, 7-Daughter car frame, 8-Daughter car drive wheel, 9-Daughter car driven wheel, 10-Daughter car drive motor, 11-Daughter car winding drum, 12-Lifting cylinder. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example:

[0023] See attached Figures 1-2A mother-daughter transport vehicle is designed according to the existing track spacing of the factory building. The mother car transports the mold with the concrete poured into it to the corresponding curing kiln, and then the daughter car transports it to the curing kiln for steam curing. The factory building is equipped with longitudinally moving mother car tracks and laterally moving daughter car tracks. The mother car also has tracks for the daughter car to move. When the mother car moves to the curing kiln, the tracks on the mother car align with the daughter car tracks inside the curing kiln, and the daughter car moves into the curing kiln. In this embodiment, the mother car includes a mother car frame 1, on which a track and a mother car traveling mechanism are provided. The mother car traveling mechanism consists of two sets of mother car driving wheels 2, two sets of mother car driven wheels 3, and two mother car drive motors 4. Each set of mother car driving wheels 2 is fixedly connected to each other by a connecting rod, and the whole is rotatably connected to the mother car frame 1 by bearings and bearing seats. The two sets of mother car driving wheels 2 are respectively located at both ends of the mother car frame 1, and are driven by two mother car drive motors 4 fixed on the mother car frame 1. The transmission method of the mother car drive motors 4 can be achieved by setting a gear meshing form for power transmission. That is, an output gear is fixedly connected to the output end of the mother car drive motor 4, and a transmission gear is coaxially set on the connecting rod. The power transmission is completed by meshing the output gear and the transmission gear, while ensuring that the two sets of mother car driving wheels 2 rotate in the same direction. Two sets of driven wheels 3 of the mother car are set between two sets of driven wheels 2 of the mother car and are evenly spaced. They are rotatably connected to the mother car frame 1 through bearings and bearing seat structures. Preferably, the wheel diameter of the driven wheels 3 of the mother car can be slightly smaller than that of the driven wheels 2 of the mother car, so that continuous movement without idling can be achieved on non-horizontal tracks. The same type of vehicle includes a vehicle frame 7, on which a vehicle traveling mechanism is provided. The vehicle traveling mechanism consists of two sets of vehicle driving wheels 8 and one set of vehicle driven wheels 9. Each set of vehicle driving wheels 8 is also fixedly connected to each other by a connecting rod. The whole is rotatably connected to the vehicle frame 7 through a bearing and bearing seat structure. The two sets of vehicle driving wheels 8 are driven by a vehicle drive motor 10 through a transmission device. The transmission device includes a driving gear and two driven gears. The output end of the vehicle drive motor 10 is fixedly connected to the driving gear. The two driven gears are coaxially arranged on the connecting rods of the two sets of vehicle driving wheels 8, and the two driven gears mesh on both sides of the driving gear. The two sets of vehicle driving wheels 8 are driven to rotate simultaneously by a vehicle drive motor 10. The other set of vehicle driven wheels 9 is rotatably connected to the vehicle frame 7 through a bearing and bearing seat structure. The two sets of vehicle driving wheels 8 and the one set of vehicle driven wheels 9 are arranged at the same interval. The number of driving wheels 2 and driven wheels 3 of the mother car, as well as driving wheels 8 and driven wheels 9 of the daughter car, can be adjusted according to the size of the mother car frame 1 and the daughter car frame 7 to ensure that the sides of the mother car frame 1 and the daughter car frame 7 are covered with wheel sets from the front end to the rear end, so as to adapt to a certain degree of uneven track, prevent the driving wheels from spinning and causing the car to stop, and allow the car to pass smoothly even if there is a rail break within a certain range of gaps.

[0024] In this embodiment, the trolley traveling mechanism also includes a trolley winding drum 11, which is driven by a geared motor. The trolley winding drum 11 is equipped with a steel wire rope, the other end of which is fixedly connected to the mother car frame 1. Driven by the geared motor, the trolley winding drum 11 can retract and extend the steel wire rope. When the trolley returns to the mother car, the trolley winding drum 11 retracts the steel wire rope, which can provide a certain driving force and enhance the reliability of the trolley transporting concrete molds. At the same time, the steel wire rope can also play a certain guiding role.

[0025] In this embodiment, the mother car positioning mechanism on the mother car frame 1 is provided with positioning pins 5 on both sides of the mother car frame 1 and telescopic cylinders 6 that drive the positioning pins 5 to extend and retract. The telescopic cylinders 6 are fixed on the mother car frame 1, and the extension and retraction direction is perpendicular to the side of the mother car frame 1. Pin holes are provided on both sides of the mother car track in front of the curing kiln. When the positioning pins 5 on the mother car frame 1 can be locked with the pin holes, the mother car is prevented from sliding. After the mother car is positioned, its track is aligned with the daughter car track in the curing kiln.

[0026] In this embodiment, the mother car positioning mechanism also includes a mother car metal sensor set at one end of the mother car frame 1. Correspondingly, a metal positioning plate is provided next to the mother car track in front of the curing kiln. When the mother car moves and the mother car metal sensor senses the metal positioning plate, it sends a feedback signal to the controller, which then controls the mother car to stop moving. At this time, the stopping position of the mother car can ensure that the positioning pin 5 on the mother car frame 1 is locked by extending and engaging with the pin hole.

[0027] In this embodiment, the subcar positioning mechanism includes a subcar metal sensor installed at one end of the subcar frame 7, and a corresponding metal positioning plate is provided next to the subcar track in the curing kiln. When the subcar moves and the subcar metal sensor senses the metal positioning plate, it sends a feedback signal to the controller, which then controls the subcar to stop moving.

[0028] In this embodiment, the mold lifting mechanism on the carriage frame 7 includes four lifting cylinders 12, respectively located at the four corners of the carriage frame 7. Each lifting cylinder 12 has a conical protrusion at its telescopic end, corresponding to four concave recesses at the bottom of the mold. When the carriage stops due to the metal positioning plate detected by the carriage metal sensor, the four lifting cylinders 12 are positioned directly below the four concave recesses. The controller controls the lifting cylinders 12 to lift, a process involving the engagement of the conical protrusions and concave recesses to prevent slippage, continuing lifting until the mold detaches from the mold support frame. The engagement of the conical protrusions and concave recesses ensures that the mold does not slip when moving on the carriage frame 7, guaranteeing stability.

[0029] In this embodiment, the controller is electrically connected to the subcar drive motor 10, the mother car drive motor 4, the subcar metal sensor, the mother car metal sensor, the geared motor, the telescopic cylinder 6, and the lifting cylinder 12. Each motor can be equipped with an encoder, and PLC technology is used to realize automated and intelligent control.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A mother-daughter transport vehicle, comprising a mother vehicle and a daughter vehicle movably mounted on the mother vehicle, wherein the mother vehicle drives the daughter vehicle to the front of the curing kiln, and the daughter vehicle can detach from the mother vehicle to drive the mold into the curing kiln, characterized in that: The mother car includes a mother car frame (1) and a mother car traveling mechanism and a mother car positioning mechanism mounted on the mother car frame (1); the daughter car includes a daughter car frame (7) and a daughter car traveling mechanism, a daughter car positioning mechanism and a mold lifting mechanism mounted on the daughter car frame (7); both the mother car traveling mechanism and the daughter car traveling mechanism include several sets of spaced traveling wheels, which can drive the mother car and the daughter car to move smoothly on broken rails or non-horizontal rails; the mother car positioning mechanism and the daughter car positioning mechanism are used to position the traveling positions of the mother car and the daughter car respectively; the mold lifting mechanism is used to lift the mold away from the mold support frame and lower the mold to stop on the mold support frame.

2. The mother-daughter transport vehicle according to claim 1, characterized in that: The mother car traveling mechanism also includes two mother car drive motors (4); the mother car traveling mechanism has several sets of traveling wheels, which are two sets of mother car driving wheels (2) and two sets of mother car driven wheels (3) set on the mother car frame (1), and the two sets of mother car driven wheels (3) are set between the two sets of mother car driving wheels (2); the two mother car drive motors (4) drive the mother car driving wheels (2) to rotate; the two sets of mother car driven wheels (3) are rotatably connected to the mother car frame (1) through a bearing structure.

3. A mother-daughter transport vehicle according to claim 2, characterized in that: The subcar traveling mechanism also includes a subcar drive motor (10); the subcar traveling mechanism has several sets of traveling wheels, which are two sets of subcar driving wheels (8) and one set of subcar driven wheels (9) set on the subcar frame (7); the subcar drive motor (10) is equipped with a transmission device for driving the two sets of subcar driving wheels (8) to rotate in the same direction.

4. A mother-daughter transport vehicle according to claim 3, characterized in that: The transmission device includes a driving gear and two driven gears; the driving gear is fixedly connected to the output end of the subcar drive motor (10) and meshes between the two driven gears; the two driven gears are respectively connected to each set of subcar driving wheels (8).

5. A mother-daughter transport vehicle according to claim 3, characterized in that: The subcar traveling mechanism also includes a subcar winding drum (11); the subcar winding drum (11) is provided with a steel wire rope; the subcar winding drum (11) is driven to rotate by a reduction motor; one end of the steel wire rope is fixedly connected to the subcar winding drum (11), and the other end is fixedly connected to the mother car frame (1).

6. A mother-daughter transport vehicle according to claim 5, characterized in that: The mother car positioning mechanism includes positioning pins (5) and telescopic cylinders (6) set on both sides of the mother car frame (1); the telescopic cylinders (6) drive the positioning pins (5) to extend and retract vertically to the side of the mother car frame (1) and cooperate with the pin holes in front of the curing kiln to accurately position the mother car.

7. A mother-daughter transport vehicle according to claim 6, characterized in that: The mother car positioning mechanism also includes a mother car metal sensor installed at one end of the mother car frame (1), and a corresponding metal positioning sheet that can be sensed by the mother car metal sensor is provided in front of the curing kiln.

8. A mother-daughter transport vehicle according to claim 7, characterized in that: The subcar positioning mechanism includes a subcar metal sensor installed at one end of the subcar frame (7), and a corresponding metal positioning sheet that can be sensed by the subcar metal sensor is provided in the curing kiln.

9. A mother-daughter transport vehicle according to claim 8, characterized in that: The mold lifting mechanism includes lifting cylinders (12) located at the four corners of the subcar frame (7); each lifting cylinder (12) is provided with a conical protrusion, and correspondingly, four concave holes are provided below the mold; the lifting cylinder (12) lifts the conical protrusion and the concave holes.

10. A mother-daughter transport vehicle according to claim 9, characterized in that: It also includes a controller; the controller is electrically connected to the subcar drive motor (10), the mother car drive motor (4), the subcar metal sensor, the mother car metal sensor, the geared motor, the telescopic cylinder (6) and the lifting cylinder (12), respectively.

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