Road and bridge construction prefabricated panel anti-jamming feeding mechanism and operation method

Abstract

The invention relates to the related technical field of road and bridge construction, in particular to a road and bridge construction prefabricated panel anti-jamming feeding mechanism and an operation method. The road and bridge construction prefabricated panel anti-jamming feeding mechanism comprises a discharging frame, a front end supporting plate, a rear end supporting plate, a discharging opening, a feeding area and a feeding unit; the feeding unit comprises a sliding rail, a pushing block, a fixing base, a push-pull spring, a connecting plate, a pushing wheel, a connecting shaft, a cam and a driving assembly and further comprises a first feeding roller, a second feeding roller, a sliding block and an elastic piece. When the driving assembly works and drives the cam to rotate, the contact surfaces of the cam and the pushing wheel are alternately changed, so that the pushing wheel generates horizontal displacement under the action of the connecting plate, and then the prefabricated plates placed in the discharging frame are driven to gradually approach and finally pass through the discharging port. In the process, the first feeding roller and the second feeding roller on the front portion rotate and are supported by the elastic pieces, so that the prefabricated slabs can pass through orderly without being blocked, and self-adaptive adjustment can be carried out according to the thicknesses of the prefabricated slabs.

Description

Technical Field

[0001] The present invention relates to the technical field related to road and bridge construction, and particularly relates to a feeding mechanism and an operation method for preventing jamming of precast slabs in road and bridge construction. Background Art

[0002] Road and bridge construction refers to engineering activities for building roads and bridges, which includes a series of processes from planning, design to construction. Road and bridge construction not only involves civil engineering technology, but also involves multiple fields such as materials science and mechanical engineering. With the development of technology, modern road and bridge construction increasingly adopts advanced technologies and equipment, such as using drones for topographic survey and applying BIM (Building Information Modeling) technology to improve design and construction efficiency. The application of these new technologies helps to improve project quality and safety, and also helps to shorten the construction period and reduce costs.

[0003] In the related art, a precast slab transport rack with the publication number of CN113443272B includes a rack body and two oppositely arranged support rods provided thereon. One of them is a movable support rod, and the movable support rod telescopically moves relative to the other fixed support rod to adjust the distance between the two support rods to adapt to the support and fixation of precast slabs of different sizes. At least two pairs of the fixed support rods and the movable support rods are arranged vertically on the rack body. The movable support rod is connected to the rack body through a horizontal telescopic arm. By adjusting the distance between the movable support rod and the fixed support rod, the present invention can adapt to the support and fixation of precast slabs of different sizes, and there is no mutual influence between two adjacent precast slabs, avoiding damage to the precast slabs during transportation, and also avoiding secondary or multiple transfers at the construction site, saving the space of the precast slab yard at the construction site and improving construction efficiency.

[0004] Although the existing placement racks can fix and support precast slabs of different sizes, effectively preventing damage during stacking and avoiding secondary or multiple transfers at the construction site. However, these existing technologies have a problem: in actual operation, when the staff takes out the precast slabs, due to the inhumane design of the placement rack, complex operations are often required to complete the process of taking out the precast slabs. This not only increases the labor intensity of the staff, but also greatly reduces the work efficiency. Summary of the Invention

[0005] The present invention solves the problems in the related art and provides a feeding mechanism and an operation method for preventing jamming of precast slabs in road and bridge construction. When the driving component is started and drives the cam to rotate, the contact surface between the cam and the pushing wheel changes alternately, causing the pushing wheel to generate a horizontal displacement under the action of the connecting plate, and then driving the precast slab placed in the feeding frame to gradually approach and finally pass through the discharge port. During this process, the front first feeding roller and the second feeding roller rotate and are supported by elastic members, which not only help the precast slab to pass through orderly without jamming, but also can be adaptively adjusted according to the thickness of the precast slab, effectively improving the stability and adaptability of the precast slab feeding.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions: A feeding mechanism for preventing jamming of precast slabs in road and bridge construction, comprising a feeding frame, a front support plate arranged at one end of the lower end surface of the feeding frame, a rear support plate arranged on the lower end surface of the feeding frame, a discharge port arranged on one side of the feeding frame relative to the front support plate, a feeding area arranged on the rear end surface of the feeding frame, and a feeding unit arranged in the feeding area; The feeding unit includes slide rails arranged on both sides of the lower end surface of the feeding area, a pushing block slidably connected to the slide rails, a fixed seat fixedly arranged at one end of the feeding area, a push-pull spring arranged between the fixed seat and the pushing block, a connecting plate fixedly arranged on the lower end surface of the pushing block, a pushing wheel fixedly connected to the middle position of the connecting plate, a connecting shaft rotatably connected to the end of the connecting plate away from the pushing block, a cam arranged opposite to the pushing wheel, and a driving component for driving the cam, and the connecting shaft is fixedly connected to the rear support plate; It further includes a first feeding roller arranged on the lower end surface of the discharge port and rotatably connected to the front support plate, a second feeding roller arranged on the upper end surface of the discharge port and opposite to the first feeding roller, a sliding block arranged at the connection position between the second feeding roller and the front placement plate, and an elastic member arranged at the connection position between the sliding block and the front placement plate, and the first feeding roller is connected to the driving component.

[0007] By adopting the above technical solutions, when the driving component is started and drives the cam to rotate, the contact surface between the cam and the pushing wheel changes alternately, causing the pushing wheel to generate a horizontal displacement under the action of the connecting plate, and then driving the precast slab placed in the feeding frame to gradually approach and finally pass through the discharge port. During this process, the front first feeding roller and the second feeding roller rotate and are supported by elastic members, which not only help the precast slab to pass through orderly without jamming, but also can be adaptively adjusted according to the thickness of the precast slab, effectively improving the stability and adaptability of the precast slab feeding.

[0008] As a preferred solution, one end of the push-pull spring is fixedly connected to the fixed seat, and the other end of the push-pull spring is fixedly connected to the connecting plate.

[0009] By adopting the above technical solution, the push-pull spring generates tension when bearing the acting forces of the cam and the driving wheel, ensuring that the pushing block can stably apply a pushing force to the precast slab; the connecting plate, as an intermediate member, transmits the tension of the push-pull spring to the pushing block.

[0010] As a preferred solution, a guiding groove adapted to the cam is provided on the outer circumferential surface of the driving wheel, and the guiding groove is circumferentially arranged with the center of the driving wheel as the center point.

[0011] By adopting the above technical solution, a guiding groove adapted to the cam is provided on the outer circumferential surface of the driving wheel, which can effectively prevent the cam from disengaging from the driving wheel and ensure that the cam rotates reliably to push the precast slab. The working principle is: the cam rotates in the guiding groove of the driving wheel, and transmits the rotating action to the connecting plate through cooperation with the driving wheel, and then drives the pushing block on the connecting plate to stably push the precast slab.

[0012] As a preferred solution, the connecting plate is rotatably connected to the connecting shaft, and a ball bearing is provided at the connection between the connecting plate and the rotating shaft.

[0013] By adopting the above technical solution, when the connecting plate receives different driving forces at the contact surfaces between the cam and the driving wheel, it is convenient for the connecting plate to rotate around the connecting shaft as the central axis.

[0014] As a preferred solution, the driving assembly includes a rotating shaft rotatably connected to the rear end support plate and connected to the cam, a driving motor penetrating through the rear end support plate and connected to the rotating shaft, a first pulley provided at the other end of the rotating shaft, a second pulley connected to the first feeding roller, and a transmission belt provided between the first pulley and the second pulley.

[0015] By adopting the above technical solution, one end of the rotating shaft ensures smooth rotation through the rotational connection with the rear end support plate, and the other end transmits power through the first pulley; the first pulley is connected to the second pulley through the transmission belt, and the second pulley is connected to the first feeding roller, which is convenient for driving the first feeding roller to rotate.

[0016] As a preferred solution, sealing bearings are provided at the connections between the two ends of the second feeding roller and the sliding block, and a sliding cavity adapted to the sliding block is provided on the front end support plate.

[0017] By adopting the above technical solution, it is convenient for the second feeding roller to rotate and is also convenient for the second feeding roller to perform vertical and horizontal sliding in the sliding cavity.

[0018] As a preferred solution, one end of the elastic member is fixedly connected to the upper end surface of the sliding block, and the other end of the elastic member is fixedly connected to the inner cavity of the sliding cavity.

[0019] By adopting the above technical solution, the sliding block is connected to the sliding cavity through the elastic member, so that the second feeding roller can automatically adjust the up and down position according to the thickness of the prefabricated board, thereby ensuring that the prefabricated board maintains an accurate position during the transmission to the next process.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has been redesigned, and includes a discharge frame, a front support plate, a rear support plate, a discharge port, a loading area and a loading unit. The discharge frame is used to stack and store prefabricated panels, and the front support plate and the rear support plate provide support to ensure the stability of storage. The discharge port is provided to facilitate the orderly transfer of prefabricated panels, and the loading area is provided with a loading unit for loading; the slide rail and slider structure in the loading unit enables the push wheel to generate horizontal movement between the fixed seat and the push block through the drive of the drive assembly, and can drive the prefabricated panels placed in the discharge frame to move along a predetermined path to the discharge port; the first feeding roller and the second feeding roller are located at the upper and lower ends of the discharge port, and can be in close contact with the prefabricated panels and transmit, so that the prefabricated panels flow forward, and the design of the sliding block and the elastic member enables the automatic adjustment according to the thickness of the prefabricated panels during the feeding process, thereby ensuring the precise control of prefabricated panels of different thicknesses.

[0021] Stable pushing and anti-jamming effect: The feeding unit of this patent effectively solves the jamming problem in the loading process of prefabricated panels through a unique structural design. Specifically, the feeding unit is provided with components such as a slide rail, a pushing block, a fixed seat, and a push-pull spring. During operation, the cam rotates, and through cooperation with the pushing wheel, the rotation effect is transmitted to the connecting plate, thereby pushing the pushing block to exert a stable pushing effect on the prefabricated panel. Since the push-pull spring generates tension when it is subjected to the force of the cam and the pushing wheel, this tension ensures that the pushing block can continuously and stably push the prefabricated panel, avoiding jamming caused by unstable pushing force. The guide grooves matched with the cams are arranged on the outer surface of the driving wheel and are arranged circumferentially with the center of the driving wheel as the center point, which further enhances the stability and reliability of the driving. The guide grooves can effectively prevent the cams from detaching from the driving wheel, ensure that the cams can rotate reliably to drive the prefabricated panels, ensure the continuity of the driving process, and thus improve the feeding efficiency. Efficient Power Transmission and Cooperative Work: The design of the drive component achieves efficient power transmission and cooperative work. After the drive motor starts, it drives the cam to generate a periodic rotational motion through the rotating shaft. At the same time, the first pulley at the other end of the rotating shaft also rotates. The first pulley is connected to the second pulley through a transmission belt, and the second pulley is connected to the first feeding roller, thereby driving the first feeding roller to rotate. This design enables the action of the cam pushing the precast slab to be coordinated with the rotational feeding action of the first feeding roller, and can quickly and orderly convey the precast slab out of the feeding frame, greatly improving the overall efficiency of loading. Adapt to Precast Slabs of Different Thicknesses: The feeding roller and the elastic adjustment structure enable this mechanism to adapt to precast slabs of different thicknesses. Sealed bearings are provided at the connections between the two ends of the second feeding roller and the sliding blocks, and sliding cavities adapted to the sliding blocks are provided on the front support plate, which not only facilitates the rotation of the second feeding roller but also enables it to slide horizontally up and down in the sliding cavity. One end of the elastic member is fixedly connected to the upper end surface of the sliding block, and the other end is fixedly connected to the inner cavity of the sliding cavity. When precast slabs of different thicknesses pass between the first feeding roller and the second feeding roller, the second feeding roller can automatically adjust its vertical position according to the thickness of the precast slab, thereby ensuring that the precast slab maintains an accurate position during the transfer to the next process, improving the versatility and adaptability of the equipment. Stable Structure and Easy to Maintain: The feeding frame is stably supported by the front support plate and the rear support plate, ensuring the stability of the storage of precast slabs. At the same time, the connection methods between components, such as the connecting plate is rotatably connected to the connecting shaft and a ball bearing is provided at the connection, and the rotating shaft is rotatably connected to the rear support plate, etc., not only ensure the smooth operation of the equipment but also make each component easy to maintain and replace during long-term use. For example, when a certain component fails, it can be easily disassembled and repaired, reducing the maintenance cost and downtime of the equipment, and improving the service life and working efficiency of the equipment. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the anti-jamming loading mechanism for precast slabs in road and bridge construction of the present invention; Figure 2 is in the anti-jamming loading mechanism for precast slabs in road and bridge construction of the present invention Figure 1 Enlarged view of part A structural schematic diagram; Figure 3 is in the anti-jamming loading mechanism for precast slabs in road and bridge construction of the present invention Figure 1 Front view structural schematic diagram; Figure 4 is the structural schematic diagram of the loading unit in the anti-jamming loading mechanism for precast slabs in road and bridge construction of the present invention; Figure 5 is the structural schematic diagram of the drive component in the anti-jamming loading mechanism for precast slabs in road and bridge construction of the present invention.

[0023] In the figure: 1. Feeding frame; 100. Rear end support plate; 101. Front end support plate; 10. Discharge port; 11. Limiting frame; 12. Discharge area; 121. Fixed seat; 122. Slide rail; 31. Pushing block; 32. Connecting plate; 321. Pushing wheel; 33. Connecting shaft; 34. Push-pull spring; 41. Cam; 411. Rotating shaft; 51. First pulley; 52. Second pulley; 53. Transmission belt; 61. First feeding roller; 62. Second feeding roller; 621. Sliding block; 6211. Elastic member. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, top, bottom, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0028] For ease of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. may be used herein to describe the spatial positional relationship of one device or feature shown in the drawings with respect to other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings of the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made.

[0029] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0030] As Figures 1 to 5 shown, a feeding mechanism for preventing jamming of precast slabs in road and bridge construction includes a feeding frame 1, a front support plate 101 provided at one end of the lower end surface of the feeding frame 1, a rear support plate 100 provided at the lower end surface of the feeding frame 1, a discharge port 10 provided on one side of the feeding frame 1 relative to the front support plate 101, a feeding area provided on the rear end surface of the feeding frame 1, and a feeding unit provided in the feeding area; Specifically, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The feeding unit includes a slide rail 122 arranged on both sides of the lower end surface of the feeding area, a pushing block 31 slidably connected to the slide rail 122, a fixed seat 121 fixedly arranged at one end of the feeding area, a push-pull spring 34 arranged between the fixed seat 121 and the pushing block 31, a connecting plate 32 fixedly arranged on the lower end surface of the pushing block 31, a pushing wheel 321 fixedly connected to the middle position of the connecting plate 32, a connecting shaft 33 rotatably connected to one end of the connecting plate 32 away from the pushing block 31, a cam 41 arranged opposite to the pushing wheel 321, and a driving component for driving the cam 41, and the connecting shaft 33 is fixedly connected to the rear end support plate 100; Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 , also includes a first feeding roller 61 arranged on the lower end surface of the discharge port 10 and rotatably connected to the front end surface support plate, a second feeding roller 62 arranged on the upper end surface of the discharge port 10 and arranged relative to the first feeding roller 61, a sliding block 621 arranged at the connection between the second feeding roller 62 and the front end placement plate, and an elastic member 6211 arranged at the connection between the sliding block 621 and the front end surface placement plate. The first feeding roller 61 is connected to the driving assembly, wherein one end of the push-pull spring 34 is fixedly connected to the fixed seat 121, and the other end of the push-pull spring 34 is fixedly connected to the connecting plate 32. The push-pull spring 34 generates tension when it is subjected to the force of the cam 41 and the pushing wheel 321, ensuring that the pushing block 31 can stably exert a pushing effect on the prefabricated plate; the connecting plate 32 acts as an intermediate piece to transmit the tension of the push-pull spring 34 to the pushing block 31.

[0031] Please refer to Figure 4 and Figure 5 In order to prevent the cam 41 from being separated from the driving wheel 321, the outer circumferential surface of the driving wheel 321 is provided with a guide groove adapted to the cam 41. The guide groove is arranged circumferentially with the center of the driving wheel 321 as the center point. The outer circumferential surface of the driving wheel 321 is provided with a guide groove adapted to the cam 41, which can effectively prevent the cam 41 from being separated from the driving wheel 321, and ensure that the cam 41 can reliably rotate to push the prefabricated board. The working principle is: the cam 41 rotates in the guide groove of the driving wheel 321, and transmits the rotational action to the connecting plate 32 through cooperation with the driving wheel 321, thereby pushing the pushing block 31 on the connecting plate 32 to smoothly push the prefabricated board.

[0032] Please refer to Figure 3 , Figure 4 and Figure 5 The connecting plate 32 is rotatably connected to the connecting shaft 33, and a ball bearing is provided at the connection between the connecting plate 32 and the rotating shaft 411. When the connecting plate 32 is subjected to different driving forces from the contact surface between the cam 41 and the driving wheel 321, the connecting plate 32 is convenient to rotate with the connecting shaft 33 as the center axis.

[0033] For details, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 , the driving assembly includes a rotating shaft 411 rotatably connected to the rear support plate 100 and connected to the cam 41, a driving motor penetrating through the rear support plate 100 and connected to the rotating shaft 411, a first pulley 51 arranged at the other end of the rotating shaft 411, a second pulley 52 connected to the first feeding roller 61, and a transmission belt 53 arranged between the first pulley 51 and the second pulley 52. One end of the rotating shaft 411 ensures smooth rotation through the rotational connection with the rear support plate 100, and the power is transmitted through the first pulley 51 at the other end; the first pulley 51 is connected to the second pulley 52 through the transmission belt 53, and the second pulley 52 is connected to the first feeding roller 61, facilitating the rotation of the first feeding roller 61. The specific working principle is as follows: After the driving motor is started, a periodic rotational motion is generated through the cooperation of the rotating shaft 411 and the cam 41, so as to facilitate the use of the different contact surfaces between the cam 41 and the pushing block 31 on the connecting plate 32, enabling the connecting plate 32 to drive the pushing block 31 to perform a horizontal reciprocating motion, realizing the pushing of the precast slab. The rotating shaft 411 drives the first pulley 51 to rotate, and then transmits the power to the second pulley 52 through the transmission belt 53, finally driving the first feeding roller 61 to move, thus facilitating the rotation of the first feeding roller 61. When the first feeding roller 61 rotates, it is convenient to drive the precast slab to be conveyed forward under the action of the first feeding roller 61 and the second feeding roller 62, and the feeding of the precast slab is completed in sequence.

[0034] For details, please refer to Figure 2 , Figure 2 , Figure 4 and Figure 5 , sealing bearings are arranged at the connections between the two ends of the second feeding roller 62 and the sliding blocks 621, and sliding cavities adapted to the sliding blocks 621 are arranged on the front support plate 101, which not only facilitates the rotation of the second feeding roller 62 but also facilitates the up-and-down horizontal sliding of the second feeding roller 62 in the sliding cavities.

[0035] For details, please refer to Figure 1 and Figure 2 , one end of the elastic member 6211 is fixedly connected to the upper end surface of the sliding block 621, and the other end of the elastic member 6211 is fixedly connected to the inner cavity of the sliding cavity. The sliding block 621 is connected to the sliding cavity through the elastic member 6211, enabling the second feeding roller 62 to automatically adjust its up-and-down position according to the thickness of the precast slab, thus ensuring the accurate position of the precast slab during the transfer to the next process.

[0036] In this embodiment, during use, the blanking frame 1 is used to stack and store precast slabs. The front support plate 101 and the rear support plate 100 provide support to ensure the stability of storage. The discharge port 10 is provided to facilitate the orderly transfer of precast slabs; When feeding is required, after the drive motor is started, through the cooperation of the rotating shaft 411 and the cam 41, a periodic rotational motion is generated, so as to facilitate the use of the different contact surfaces between the cam 41 and the pushing block 31 on the connecting plate 32, so that the connecting plate 32 drives the pushing block 31 to perform a horizontal reciprocating motion, realizing the pushing of the precast slab. The rotating shaft 411 drives the first pulley 51 to rotate, and then transmits the power to the second pulley 52 through the transmission belt 53, and finally drives the first feeding roller 61 to move, so as to facilitate the rotation of the first feeding roller 61. When the first feeding roller 61 rotates, it is convenient to drive the precast slab to be conveyed forward under the action of the first feeding roller 61 and the second feeding roller 62, and the feeding of the precast slab is completed in sequence.

[0037] The specific implementation of this application will be described below; (1) Mechanism assembly: Installation of the blanking frame and support: Place the blanking frame 1 at the predetermined working position to ensure its stability. Fix the front support plate 101 to one end of the lower end surface of the blanking frame 1, and fix the rear support plate 100 to the corresponding position of the lower end surface of the blanking frame 1, so that the blanking frame 1 is firmly supported, providing a basis for storing precast slabs subsequently. Assembly of the feeding unit: Install slide rails 122 on both sides of the lower end surface of the feeding area at the rear end surface of the blanking frame 1. Slide the pushing block 31 on the slide rails 122 to ensure that the pushing block 31 can slide smoothly on the slide rails 122. Install a push-pull spring 34 between the fixed seat 121 and the pushing block 31, firmly fix one end of the push-pull spring 34 to the fixed seat 121, and fix the other end to the connecting plate 32 on the lower end surface of the pushing block 31. Fix a pushing wheel 321 at the middle position of the connecting plate 32. At the same time, rotatably connect the connecting shaft 33 to the end of the connecting plate 32 away from the pushing block 31, and fix the connecting shaft 33 to the rear support plate 100. Set the cam 41 at a position opposite to the pushing wheel 321 to ensure that the cam 41 can effectively cooperate with the pushing wheel 321 in subsequent work. Installation of the drive assembly: Rotatably connect one end of the rotating shaft 411 to the rear support plate 100, and firmly connect the other end to the cam 41. Pass the drive motor through the rear support plate 100 and connect it to the rotating shaft 411 to ensure that the drive motor can stably drive the rotating shaft 411 to rotate. Install a first pulley 51 at the other end of the rotating shaft 411, install a second pulley 52 on the first feeding roller 61, and install a transmission belt 53 between the first pulley 51 and the second pulley 52 to achieve effective power transmission. Installation of the feeding roller and the adjusting component: The first feeding roller 61 is rotatably connected to the lower end surface of the discharge port 10 and the front support plate 101. At the position on the upper end surface of the discharge port 10 opposite to the first feeding roller 61, both ends of the second feeding roller 62 are connected to the sliding block 621 through sealed bearings. A sliding cavity adapted to the sliding block 621 is opened on the front support plate 101, and the sliding block 621 is installed in the sliding cavity so that the second feeding roller 62 can slide horizontally up and down in the sliding cavity and can rotate smoothly. One end of the elastic member 6211 is fixedly connected to the upper end surface of the sliding block 621, and the other end is fixedly connected to the inner cavity of the sliding cavity, completing the installation of the elastic adjustment structure. (2) Debugging stage: Power transmission debugging: Start the driving motor, check whether the rotation of the rotating shaft 411 is smooth, and observe whether the cam 41 can rotate stably along with the rotating shaft 411. At the same time, check whether the transmission between the first pulley 51, the second pulley 52 and the transmission belt 53 is normal to ensure that the first feeding roller 61 can rotate smoothly driven by the driving motor. Pushing component debugging: Manually rotate the cam 41 and observe the cooperation of the pushing wheel 321 in the guiding groove to ensure that the cam 41 will not disengage from the pushing wheel 321. Check the sliding condition of the pushing block 31 on the sliding rail 122 and the tension change of the push-pull spring 34 when stressed to ensure that the pushing block 31 can stably exert a pushing force on the precast slab. Feeding roller and adjusting component debugging: Place simulated precast slabs with different thicknesses between the first feeding roller 61 and the second feeding roller 62, and observe whether the second feeding roller 62 can automatically adjust its vertical position according to the thickness of the simulated precast slab through the action of the sliding block 621 and the elastic member 6211 to ensure that the simulated precast slab maintains an accurate position during the conveying process. (3) Operation process: Loading operation: Stack the precast slabs in the loading frame 1 to ensure stable storage. When loading is required, start the driving motor. The driving motor drives the cam 41 to generate a periodic rotational motion through the rotating shaft 411. The cam 41 rotates in the guiding groove of the pushing wheel 321, and transfers the rotational action to the connecting plate 32 through the cooperation with the pushing wheel 321, thereby pushing the pushing block 31 to perform a horizontal reciprocating motion on the sliding rail 122 to realize the pushing of the precast slabs in the loading frame 1. Feeding operation: The rotating shaft 411 drives the first pulley 51 to rotate, and transmits the power to the second pulley 52 through the transmission belt 53, thereby driving the first feeding roller 61 to rotate. When the first feeding roller 61 rotates, it drives the precast slab pushed by the pushing block 31 to the discharge port 10 to be conveyed forward under the action of the first feeding roller 61 and the second feeding roller 62. During the conveying process, the second feeding roller 62 automatically adjusts its position according to the thickness of the precast slab to ensure that the precast slab is stably and accurately conveyed to the next process, and the loading work of the precast slab is completed in sequence.

[0038] The above is a preferred embodiment of the present invention. Those skilled in the art to which the present invention pertains are also capable of making changes and modifications to the above-described embodiment. Therefore, the present invention is not limited to the above specific embodiment, and any obvious improvements, substitutions, or variations made by those skilled in the art based on the present invention fall within the protection scope of the present invention.

Claims

1. A feeding mechanism for preventing jamming of precast slabs in road and bridge construction, characterized in that: It includes a feeding frame (1), a front support plate (101) arranged at one end of the lower end face of the feeding frame (1), a rear support plate (100) arranged on the lower end face of the feeding frame (1), a discharge port (10) arranged on one side of the feeding frame (1) relative to the front support plate (101), a feeding area arranged on the rear end face of the feeding frame (1), and a feeding unit arranged in the feeding area; The feeding unit includes slide rails (122) arranged on both sides of the lower end face of the feeding area, a pushing block (31) slidably connected to the slide rails (122), a fixed seat (121) fixedly arranged at one end of the feeding area, a push-pull spring (34) arranged between the fixed seat (121) and the pushing block (31), a connecting plate (32) fixedly arranged on the lower end face of the pushing block (31), a pushing wheel (321) fixedly connected to the middle position of the connecting plate (32), a connecting shaft (33) rotatably connected to one end of the connecting plate (32) away from the pushing block (31), a cam (41) arranged opposite to the pushing wheel (321), and a driving component for driving the cam (41). The connecting shaft (33) is fixedly connected to the rear support plate (100); It further includes a first feeding roller (61) arranged on the lower end face of the discharge port (10) and rotatably connected to the front support plate, a second feeding roller (62) arranged on the upper end face of the discharge port (10) and arranged opposite to the first feeding roller (61), a sliding block (621) arranged at the connection position of the second feeding roller (62) and the front placing plate, and an elastic member (6211) arranged at the connection position of the sliding block (621) and the front placing plate. The first feeding roller (61) is connected to the driving component.

2. The feeding mechanism for preventing jamming of precast slabs in road and bridge construction according to claim 1, characterized in that: One end of the push-pull spring (34) is fixedly connected to the fixed seat (121), and the other end of the push-pull spring (34) is fixedly connected to the connecting plate (32); the push-pull spring (34) generates tension when bearing the acting forces of the cam (41) and the pushing wheel (321), ensuring that the pushing block (31) can stably exert a pushing effect on the precast slab; the connecting plate (32) serves as an intermediate member to transfer the tension of the push-pull spring (34) to the pushing block (31).

3. The feeding mechanism for preventing jamming of precast slabs in road and bridge construction according to claim 2, characterized in that: The outer circumferential surface of the pushing wheel (321) is provided with a guiding groove adapted to the cam (41). The guiding groove is circumferentially arranged with the center of the pushing wheel (321) as the center point. The guiding groove adapted to the cam (41) is provided on the outer circumferential surface of the pushing wheel (321), which can effectively prevent the cam (41) from detaching from the pushing wheel (321), ensuring that the cam (41) rotates reliably to push the precast slab; the cam (41) rotates in the guiding groove of the pushing wheel (321), and transfers the rotational action to the connecting plate (32) through cooperation with the pushing wheel (321), and then pushes the pushing block (31) on the connecting plate (32) to stably push the precast slab.

4. The feeding mechanism for preventing jamming of precast slabs in road and bridge construction according to claim 3, characterized in that: The connecting plate (32) is rotatably connected to the connecting shaft (33), and a ball bearing is provided at the connection between the connecting plate (32) and the rotating shaft (411).

5. The feeding mechanism for preventing jamming of precast slabs in road and bridge construction according to claim 4, characterized in that: The driving assembly includes a rotating shaft (411) rotatably connected to the rear end support plate (100) and connected to the cam (41), a driving motor penetrating through the rear end support plate (100) and connected to the rotating shaft (411), a first pulley (51) provided at the other end of the rotating shaft (411), a second pulley (52) connected to the first feeding roller (61), and a transmission belt (53) provided between the first pulley (51) and the second pulley (52).

6. The feeding mechanism for preventing jamming of precast slabs in road and bridge construction according to claim 5, characterized in that: Sealing bearings are provided at the connections between the two ends of the second feeding roller (62) and the sliding blocks (621). A sliding cavity adapted to the sliding blocks (621) is provided on the front end support plate (101), which is convenient for the second feeding roller (62) to rotate and slide horizontally up and down in the sliding cavity.

7. The feeding mechanism for preventing jamming of precast slabs in road and bridge construction according to claim 6, characterized in that: One end of the elastic member (6211) is fixedly connected to the upper end surface of the sliding block (621), and the other end of the elastic member (6211) is fixedly connected to the inner cavity of the sliding cavity. The sliding block (621) is connected to the sliding cavity through the elastic member (6211), so that the second feeding roller (62) can automatically adjust its vertical position according to the thickness of the precast slab, thereby ensuring the accurate position of the precast slab during the transfer to the next process.

8. An operating method for a feeding mechanism that prevents jamming of precast slabs in road and bridge construction according to claim 1, characterized in that: During use, the blanking frame (1) is used for stacking and storing precast slabs. The front end support plate (101) and the rear end support plate (100) provide support to ensure the stability of storage. The discharge port (10) is provided to facilitate the orderly transfer of precast slabs. When feeding is required, after the driving motor is started, a periodic rotational motion is generated through the cooperation of the rotating shaft (411) and the cam (41). Thus, by utilizing the different contact surfaces between the cam (41) and the pushing block (31) on the connecting plate (32), the connecting plate (32) drives the pushing block (31) to perform a horizontal reciprocating motion, realizing the pushing of the precast slab. The rotating shaft (411) drives the first pulley (51) to rotate, and then the power is transmitted to the second pulley (52) through the transmission belt (53), finally driving the first feeding roller (61) to move, which is convenient for the first feeding roller (61) to rotate. When the first feeding roller (61) rotates, it is convenient to drive the precast slab to be conveyed forward under the action of the first feeding roller (61) and the second feeding roller (62), and the feeding of the precast slab is completed in sequence.

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