On-line conveying device for conveying precast pile prestressed end face flange

Abstract

The utility model provides an on-line conveying device for conveying a pre-stressed end face flange of a precast pile, which comprises a rack, an on-line conveying driving source arranged on the rack, a plurality of rotatable on-line conveying rollers and at least one group of conveying control mechanisms arranged on a conveying path of the pre-stressed end face flange, each set of conveying control mechanism comprises a flange detection assembly and an on-line stopping assembly which are arranged next to each other in sequence in the conveying direction of the prestressed end face flange, the on-line stopping assembly comprises an on-line stopping driving source installed on the rack and a liftable flange stopping rod, and the on-line stopping driving source is in transmission connection with the flange stopping rod; the flange stopping rod is arranged in a gap between every two adjacent on-line conveying rollers in a lifting mode. Through cooperation of the flange detection assembly and the on-line stop assembly, the conveying progress of the prestressed end face flanges can be effectively controlled, the prestressed end face flanges are conveyed forwards orderly and intermittently, and the requirement for the cleaning time of the subsequent cleaning procedure is met.

Description

Technical Field

[0001] The utility model relates to the technical field of precast pile production, in particular to an on-line conveying device for conveying prestressed end face flanges of precast piles. Background Art

[0002] In the production process of precast piles, the cage reinforcement (i.e., steel bar skeleton) is first made, and then the cage reinforcement is loaded into a mold, and cement products are poured into it to finally form a precast pile. Usually, the cage reinforcement includes a main reinforcement cage, a head plate and end plate assembly fixed at one end of the main reinforcement cage, and a tail plate and end plate assembly fixed at the other end of the main reinforcement cage. The head plate and end plate assembly includes an end plate and a head plate flange fastened by several bolts, and a hoop riveted to the outer periphery of the end plate. The tail plate and end plate assembly includes an end plate and a tail plate flange fastened by several bolts, and a hoop riveted to the outer periphery of the end plate. Both the head plate flange and the tail plate flange are prestressed end face flanges.

[0003] At present, in the production of automated cage reinforcement production lines, prestressed end flanges (i.e., head plate flanges and tail plate flanges) are molded together with the cage reinforcement. When the mold is removed, the prestressed end flanges are removed from both ends of the precast pile and then flow into the next round of automated cage reinforcement production. However, a layer of concrete will adhere to the surface of the prestressed end flange after demolding. If the prestressed end flange flows directly into the next round of automated cage reinforcement production, a large amount of concrete residue will accumulate on the automated cage reinforcement production line equipment, increasing the equipment failure rate and affecting production efficiency and quality. Therefore, before the prestressed end flange is removed and flows into the next round of production, the concrete on the surface of the prestressed end flange needs to be cleaned.

[0004] In the prior art, there are two main ways to clean prestressed end flanges:

[0005] Method 1: Workers complete the work on the ground; workers need to carry and flip the prestressed end flange. The weight of the prestressed end flange used in the automated cage reinforcement production line is 15 to 62 kg, and workers also need to use a shovel to knock and scrape it to clean it. This method has low cleaning efficiency, high labor costs, excessive physical exertion, and certain risks during the handling process. The knocking of the shovel will cause knocking pits on the surface of the prestressed end flange, reducing the service life of the prestressed end flange.

[0006] Method 2: It is completed by cleaning equipment; for example, a cleaning device for the head and tail plates of pipe piles disclosed in the Chinese utility model patent with the authorization announcement number CN218797676U is used, which places the head and tail plates on the front conveyor line, and the front conveyor line conveys the head and tail plates, and the cleaning component completes the cleaning of the head and tail plates. However, its front conveyor line only has a conveying function and cannot control the conveying progress of the head and tail plates (i.e., the prestressed end face flange). Utility Model Content

[0007] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the utility model is to provide an on-line conveying device for conveying prestressed end face flanges of precast piles, which can control the conveying progress of the prestressed end face flanges.

[0008] To achieve the above-mentioned purpose, the utility model provides an online conveying device for conveying prestressed end face flanges of precast piles, the online conveying device comprising a frame, an online conveying driving source installed on the frame, and several online conveying rollers that are rotatably installed on the frame, the online conveying driving source is transmission-connected with the several online conveying rollers, driving the online conveying rollers to convey the prestressed end face flanges; the online conveying device also includes at least one group of conveying control mechanisms arranged on the conveying path of the prestressed end face flanges, each group of conveying control mechanisms includes a flange detection component and an online stop component that are arranged in succession along the conveying direction of the prestressed end face flanges, the online stop component includes an online stop driving source installed on the frame, and a flange stop rod that can be lifted and lowered, the online stop driving source is transmission-connected with the flange stop rod, and the flange stop rod can be lifted and lowered in the gap between two adjacent online conveying rollers.

[0009] The preferred scheme of the above technical scheme is: there are two flange stop rods in the upper line stop assembly, and they are distributed side by side in a direction perpendicular to the conveying direction of the prestressed end face flange. The upper line stop assembly also includes an upper line stop mounting plate fixed to the frame, and an upper line stop connecting plate. The two flange stop rods can be installed on the upper line stop mounting plate in a liftable manner, and the lower ends are fixed to the upper line stop connecting plate. The upper line stop driving source is a cylinder fixed to the upper line stop mounting plate, and the piston rod of the cylinder is connected to the upper line stop connecting plate.

[0010] The preferred solution of the above technical solution is: the upper line stop assembly also includes a sensor fixing frame fixed to the upper line stop mounting plate, and two proximity switches fixed to the sensor fixing frame, the two proximity switches are arranged side by side up and down, and can sense the upper line stop connecting plate.

[0011] A preferred embodiment of the above technical solution is as follows: a shock absorbing ring is fixed to the upper end of the flange stop rod, and the shock absorbing ring is used to abut against the prestressed end face flange.

[0012] A preferred embodiment of the above technical solution is as follows: the online conveying device further comprises a material loading detection component arranged at the inlet end of the online conveying device, and the material loading detection component is used to detect whether there is a prestressed end face flange at the inlet end of the online conveying device.

[0013] The preferred scheme of the above technical scheme is: the flange detection component and the feeding detection component both include a sensor mounting plate fixed to the frame, and a through-type sensor fixed to the sensor mounting plate, and the transmitter and receiver of the through-type sensor are distributed opposite each other in a direction perpendicular to the conveying direction of the prestressed end face flange.

[0014] The preferred solution of the above technical solution is: the online conveying device also includes a sensor fixing rail fixed on the outer side of the frame in a direction perpendicular to the conveying direction of the prestressed end face flange, and the sensor fixing rail is provided with a fixing groove extending straight along the conveying direction of the prestressed end face flange, and the sensor mounting plate is fixed to the sensor fixing rail by a fastening screw, and the fastening screw is tightened in a fastening nut located in the fixing groove.

[0015] The preferred scheme of the above technical scheme is: the online conveying device also includes two groups of guide assemblies symmetrically arranged in a direction perpendicular to the conveying direction of the prestressed end face flange, each group of guide assemblies includes a guide mounting plate fixed to the frame, and a guide rod fixed on the inner side of the guide mounting plate and distributed above the online conveying roller, the guide rod includes a first guide section, a bent and narrowed section, and a second guide section connected in sequence along the conveying direction of the prestressed end face flange, the first guide section and the second guide section both extend straight along the conveying direction of the prestressed end face flange, and the bent and narrowed section extends obliquely, so that the spacing of the first guide sections in the two groups of guide assemblies is greater than the spacing of the second guide sections.

[0016] The preferred embodiment of the above technical solution is as follows: a plurality of foot cups and a plurality of ground anchors are installed at the lower end of the frame.

[0017] As described above, the on-line conveying device for conveying the prestressed end face flange of a prefabricated pile involved in the utility model has the following beneficial effects:

[0018] In the present application, the flange detection component is used to detect whether there is a prestressed end face flange on the rear side of the on-line stop component; when there is no prestressed end face flange on the previous station of the on-line stop component, the on-line stop driving source drives the flange stop rod to descend, and the prestressed end face flange is conveyed forward by the rotation of the on-line conveying roller, until the flange detection component detects that the prestressed end face flange is conveyed forward to the rear side of the on-line stop component, then the on-line stop driving source drives the flange stop rod to rise, and the prestressed end face flange is stopped there. In this way, through the cooperation of the flange detection component and the on-line stop component, the conveying progress of the prestressed end face flange can be effectively controlled, so that the prestressed end face flange can be conveyed forward in an orderly and intermittent manner, meeting the cleaning time requirements of the subsequent cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the head plate flange in this application.

[0020] Figure 2 It is a schematic diagram of the structure of the tail plate flange in this application.

[0021] Figure 3 It is a structural schematic diagram of the online conveying device in this application.

[0022] Figure 4 It is a schematic diagram of the assembly of the frame, the on-line conveying roller and the guide assembly in this application.

[0023] Figure 5 for Figure 4 Bottom view of .

[0024] Figure 6 for Figure 4 Side view of.

[0025] Figure 7 This is a structural diagram of the online stop assembly in this application.

[0026] Figure 8 This is a schematic diagram of the structure of the flange detection assembly in this application.

[0027] Component number description

[0028] 101 Head plate flange

[0029] 102 Tail plate flange

[0030] 103 Blocking plate

[0031] 104 Flange hole

[0032] 20 racks

[0033] 21 foot cup

[0034] 22 Anchor bracket

[0035] 23 Roller guard

[0036] 30 On-line conveying drive source

[0037] 40 On-line conveyor roller

[0038] 50 Flange detection assembly

[0039] 60 On-line stop assembly

[0040] 61 On-line stop drive source

[0041] 62 Flange stop bar

[0042] 63 Upper line stop installation plate

[0043] 64 Upper line stop connection plate

[0044] 65 Sensor holder

[0045] 66 Proximity switch

[0046] 67 shock absorbing ring

[0047] 68 Adapter

[0048] 69 Sensor cover

[0049] 610 Oil-free Bushing

[0050] 70 Feeding detection component

[0051] 81 Sensor mounting plate

[0052] 82 Transmitter

[0053] 83 Receiver

[0054] 90 Sensor fixing rail

[0055] 91 Fixed slot

[0056] 110 Fastening nut

[0057] 120 Guide mounting plate

[0058] 130 Guide rod

[0059] 131 First guide section

[0060] 132 Bend narrowing section

[0061] 133 Second guide section

[0062] 140 Sprocket and chain mechanism DETAILED DESCRIPTION

[0063] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0064] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0065] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0066] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0067] The utility model provides an on-line conveying device for conveying a prestressed end face flange of a prefabricated pile, the prestressed end face flange comprises Figure 1 The head plate flange 101 shown, and Figure 2 The tail plate flange 102 shown, the head plate flange 101 and the tail plate flange 102 are all provided with a circle of through holes for realizing the detachable connection between the head plate flange 101 and the end plate, and the detachable connection between the tail plate flange 102 and the end plate. At the same time, a blocking plate 103 is fixed in the middle of the head plate flange 101, but a through flange hole 104 is provided in the middle of the tail plate flange 102. In addition, for the convenience of description, the conveying direction of the prestressed end face flange conveyed by the upper line conveying device is defined as the front direction.

[0068] like Figure 3 and Figure 4As shown, the on-line conveying device involved in the utility model includes a frame 20, an on-line conveying driving source 30 installed on the frame 20, and a plurality of on-line conveying rollers 40 rotatably installed on the frame 20. The on-line conveying driving source 30 is connected to the plurality of on-line conveying rollers 40 in a transmission manner to drive the on-line conveying rollers 40 to convey the prestressed end face flange forward. In particular, the on-line conveying device also includes at least one set of conveying control mechanisms arranged on the conveying path of the prestressed end face flange. Figure 3 In the embodiment shown, there are two groups of conveying control mechanisms, which are spaced apart in front and back along the conveying direction of the prestressed end face flange; of course, in other embodiments, the conveying control mechanisms can be one group, three groups, or more groups, and the specific number is determined according to actual needs. Each group of conveying control mechanisms includes a flange detection component 50 and an upper line stop component 60, and the flange detection component 50 and the upper line stop component 60 are arranged in sequence along the conveying direction of the prestressed end face flange, that is, the flange detection component 50 is arranged immediately behind the upper line stop component 60. Figure 3 and Figure 7 As shown, the upper line stop assembly 60 includes an upper line stop drive source 61 installed on the frame 20, and a liftable flange stop rod 62. The upper line stop drive source 61 is transmission-connected to the flange stop rod 62, and the flange stop rod 62 is liftably arranged in the gap between two adjacent upper line conveying rollers 40.

[0069] The on-line conveying device involved in the present application is applied to the automatic cleaning production line of prestressed end face flanges, and is used to convey the prestressed end face flanges to be cleaned to the cleaning station. Figure 3As shown, the prestressed end face flange to be cleaned is placed flat at the entrance end of the upper line conveyor device, and the entrance end of the upper line conveyor device is the rear end of the upper line conveyor device; the upper line conveyor driving source 30 is activated to drive the plurality of upper line conveyor rollers 40 to rotate, and the upper line conveyor rollers 40 convey the prestressed end face flange forward. In the process of the upper line conveyor rollers 40 conveying the prestressed end face flange forward, the flange detection component 50 is used to detect whether there is a prestressed end face flange on the rear side of the upper line stop component 60, and to determine whether the prestressed end face flange is conveyed forward to the rear side of the upper line stop component 60. In the initial state, the flange stop rod 62 is in an ascending state; during the automatic cleaning process of the prestressed end face flange, when there is no prestressed end face flange on the previous station of the rear on-line stop assembly 60, the on-line stop driving source 61 in the rear on-line stop assembly 60 drives the rear flange stop rod 62 to descend, and the prestressed end face flange is conveyed forward by the rotation of the on-line conveying roller 40, until the front flange detection assembly 50 detects that the prestressed end face flange is conveyed forward to the rear side of the front on-line stop assembly 60, then the on-line stop driving source 61 in the rear on-line stop assembly 60 drives the rear flange stop rod 62 to rise, and the subsequent prestressed end face flange is stopped there. In this way, through the cooperation of the flange detection assembly 50 and the on-line stop assembly 60, the conveying progress of the prestressed end face flange can be effectively controlled, so that the prestressed end face flange can be conveyed forward in an orderly and intermittent manner, meeting the cleaning time requirements of the subsequent cleaning process.

[0070] Furthermore, if Figure 4 and Figure 5 As shown, the upper line conveying driving source 30 is a motor, preferably a variable frequency reduction motor, which is fixedly mounted on the frame 20 through a motor fixing bracket and distributed below the upper line conveying roller 40; the upper line conveying driving source 30 is connected to several upper line conveying rollers 40 through a sprocket chain mechanism 140. At the same time, Figure 4 and Figure 6 As shown, the frame 20 is a frame structure welded by multiple columns and beams, and a foot cup 21 and a ground anchor 22 are installed at the lower end of each column; the foot cup 21 is used to adjust the height of the column where it is located, that is, to adjust the overall height and balance of the frame 20; the ground anchor 22 is used to fix the frame 20 to the ground to improve the stability of the upper line conveyor. In addition, a roller protection cover 23 is fixed to the upper end of the frame 20 to cover the sprocket chain mechanism 140 to prevent the sprocket chain mechanism 140 from being contaminated by concrete residues.

[0071] Furthermore, if Figure 7As shown, there are two flange stop rods 62 in the upper line stop assembly, and they are distributed side by side in a direction perpendicular to the conveying direction of the prestressed end face flange. The upper line stop assembly 60 also includes an upper line stop mounting plate 63 fixed to the frame 20, and an upper line stop connecting plate 64. The upper line stop mounting plate 63 is distributed under several upper line conveying rollers 40. The two flange stop rods 62 are both liftably installed on the upper line stop mounting plate 63 through oil-free bushings 610. The lower ends of the two flange stop rods 62 are fixed to the upper line stop connecting plate 64. The upper line stop driving source 61 is a cylinder fixed to the bottom of the upper line stop mounting plate 63, and the lower end of the piston rod of the cylinder is connected to the upper line stop connecting plate 64 through an adapter 68. In this way, when the cylinder piston rod of the upper line stop driving source 61 extends downward, the two flange stop rods 62 are driven downward at the same time through the upper line stop connecting plate 64, and no longer stop the prestressed end face flange; when the cylinder piston rod of the upper line stop driving source 61 retracts upward, the two flange stop rods 62 are driven upward at the same time through the upper line stop connecting plate 64, and can stop the prestressed end face flange.

[0072] Furthermore, if Figure 7 As shown, the upper line stop assembly 60 also includes a sensor fixing frame 65 fixed to the upper line stop mounting plate 63, and two proximity switches 66 fixed to the sensor fixing frame 65, and the two proximity switches 66 are arranged side by side and can sense the upper line stop connecting plate 64. When the upper line stop driving source 61 drives the two flange stop rods 62 to move downward at the same time through the upper line stop connecting plate 64, the lower proximity switch 66 can sense the upper line stop connecting plate 64, and the lower proximity switch 66 is triggered; when the upper line stop driving source 61 drives the two flange stop rods 62 to move upward at the same time through the upper line stop connecting plate 64, the upper proximity switch 66 can sense the upper line stop connecting plate 64, and the upper proximity switch 66 is triggered. Therefore, according to the signals of the upper and lower proximity switches 66, the position information of the flange stop rod 62 is accurately fed back, and then the descending state or ascending state of the flange stop rod 62 is accurately judged, thereby improving the control accuracy.

[0073] Preferably, if Figure 7 As shown, a shock absorbing ring 67 is fixed to the upper end of each flange stop rod 62, and the shock absorbing ring 67 is used to abut against the outer peripheral surface of the prestressed end face flange to buffer the impact force when stopping the prestressed end face flange to avoid damage to the prestressed end face flange. A sensor shield 69 is fixed to the sensor fixing frame 65, and two proximity switches 66 are covered in the sensor shield 69 to prevent the two proximity switches 66 from being contaminated by concrete residues.

[0074] Furthermore, if Figure 3As shown, the online conveying device also includes a feeding detection component 70 arranged at the entrance end of the online conveying device, and the feeding detection component 70 is used to detect whether there is a prestressed end face flange at the entrance end of the online conveying device; when the feeding detection component 70 detects that there is a prestressed end face flange at the entrance end of the online conveying device, it is judged as incoming material, and the online conveying driving source 30 is started according to the incoming material signal, so that the online conveying device conveys the prestressed end face flange forward.

[0075] Preferably, the flange detection assembly 50 and the feeding detection assembly 70 have the same structure, such as Figure 3 and Figure 8 As shown, the flange detection assembly 50 and the feeding detection assembly 70 both include a sensor mounting plate 81 fixed to the frame 20, and a beam sensor fixed to the sensor mounting plate 81. The transmitter 82 and the receiver 83 of the beam sensor are arranged opposite to each other in a direction perpendicular to the conveying direction of the prestressed end face flange. The transmitter 82 and the receiver 83 of the beam sensor are respectively fixed to the left and right sides of the frame 20 through a sensor mounting plate 81. When there is no prestressed end face flange between the transmitter 82 and the receiver 83, the receiver 83 can receive the light emitted by the transmitter 82; when there is a prestressed end face flange between the transmitter 82 and the receiver 83, the light emitted by the transmitter 82 is blocked by the prestressed end face flange, and the receiver 83 cannot receive the light emitted by the transmitter 82. Therefore, it can be judged whether there is a prestressed end face flange at that place according to the output of the receiver 83.

[0076] Further, the installation structure of the flange detection component 50 and the feeding detection component 70 on the frame 20 is preferably: the online conveying device also includes a sensor fixing rail 90 fixed on the outer side of the frame 20 in a direction perpendicular to the conveying direction of the prestressed end face flange, and there are two sensor fixing rails 90, one sensor fixing rail 90 is fixed on the left side of the frame 20, and the other sensor fixing rail 90 is fixed on the right side of the frame 20, and both sensor fixing rails 90 extend straight forward and backward. A fixing groove 91 extending straight forward and backward along the conveying direction of the prestressed end face flange is provided in the sensor fixing rail 90, and the sensor mounting plate 81 is fixed to the sensor fixing rail 90 by a fastening screw, and the fastening screw is tightened in the fastening nut 110 located in the fixing groove 91, so as to facilitate the installation of the flange detection component 50 and the feeding detection component 70 on the frame 20. In this embodiment, the sensor fixing rail 90 is a C-shaped rail, and the fastening nut 110 is a square nut. There is a clearance fit between the square nut and the fixing groove 91 of the C-shaped rail.

[0077] Furthermore, if Figure 3 and Figure 4As shown, the upper line conveying device also includes two groups of guide assemblies arranged symmetrically in a direction perpendicular to the conveying direction of the prestressed end face flange; each group of guide assemblies includes a guide mounting plate 120 fixed to the frame 20, and a guide rod 130 fixed to the inner side of the guide mounting plate 120, the guide rod 130 is distributed above the upper line conveying roller 40, and the guide rod 130 includes a first guide section 131, a bending and narrowing section 132, and a second guide section 133 connected in sequence along the conveying direction of the prestressed end face flange, the first guide section 131 and the second guide section 133 both extend straight along the conveying direction of the prestressed end face flange, and the bending and narrowing section 132 extends obliquely, so that the spacing of the first guide section 131 in the two groups of guide assemblies is greater than the spacing of the second guide section 133. In this way, through the narrowing guide of the second guide section 133, the prestressed end face flange is more reliably guided to the center position of the upper line conveying device, and the prestressed end face flange is better controlled at the set position.

[0078] In summary, after the feeding detection component 70 detects the incoming material, the online conveying drive source 30 drives the online conveying roller 40 to rotate, so as to realize the continuous forward conveying of the prestressed end face flange. At the same time, through two sets of matching flange detection components 50 and online stop components 60, the conveying progress of the prestressed end face flange can be controlled. The feeding of the prestressed end face flange on the online conveying device can be realized by splicing other conveying equipment, configuring a feeding robot, or manually feeding.

[0079] In summary, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0080] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A conveying device for conveying a prefabricated pile prestressed end face flange, the conveying device comprising a frame (20), a conveying drive source (30) mounted on the frame (20), and a plurality of conveying rollers (40) rotatably mounted on the frame (20), the conveying drive source (30) being transmission-connected with the plurality of conveying rollers (40) to drive the conveying rollers (40) to convey the prestressed end face flange, characterized in that: The upper line conveying device also includes at least one group of conveying control mechanisms arranged on the conveying path of the prestressed end face flange, each group of conveying control mechanisms includes a flange detection component (50) and an upper line stop component (60) arranged in sequence along the conveying direction of the prestressed end face flange, the upper line stop component (60) includes an upper line stop driving source (61) installed on the frame (20), and a flange stop rod (62) that can be lifted and lowered, the upper line stop driving source (61) is transmission-connected to the flange stop rod (62), and the flange stop rod (62) is liftably arranged in the gap between two adjacent upper line conveying rollers (40).

2. The upper line conveying device according to claim 1 is characterized in that: There are two flange stop rods (62) in the upper line stop assembly, which are arranged side by side in a direction perpendicular to the conveying direction of the prestressed end face flange. The upper line stop assembly (60) also includes an upper line stop mounting plate (63) fixed to the frame (20), and an upper line stop connecting plate (64). The two flange stop rods (62) can be installed on the upper line stop mounting plate (63) in a movably movable manner, and the lower ends are fixed to the upper line stop connecting plate (64). The upper line stop driving source (61) is a cylinder fixed to the upper line stop mounting plate (63), and the piston rod of the cylinder is connected to the upper line stop connecting plate (64).

3. The upper line conveying device according to claim 2 is characterized in that: The upper line stop assembly (60) further comprises a sensor fixing frame (65) fixed to the upper line stop mounting plate (63), and two proximity switches (66) both fixed to the sensor fixing frame (65), wherein the two proximity switches (66) are arranged side by side up and down and can both sense the upper line stop connecting plate (64).

4. The upper line conveying device according to claim 1 or 2, characterized in that: A shock absorbing ring (67) is fixed to the upper end of the flange stop rod (62), and the shock absorbing ring (67) is used to abut against the prestressed end face flange.

5. The upper line conveying device according to claim 1, characterized in that: It also comprises a material loading detection component (70) arranged at the inlet end of the upper line conveying device, and the material loading detection component (70) is used to detect whether there is a prestressed end face flange at the inlet end of the upper line conveying device.

6. The upper line conveying device according to claim 5, characterized in that: The flange detection assembly (50) and the feeding detection assembly (70) both include a sensor mounting plate (81) fixed to the frame (20), and a beam sensor fixed to the sensor mounting plate (81), wherein a transmitter (82) and a receiver (83) of the beam sensor are arranged opposite to each other in a direction perpendicular to the conveying direction of the prestressed end face flange.

7. The upper line conveying device according to claim 6, characterized in that: It also includes a sensor fixing rail (90) fixed to the outer side of the frame (20) in a direction perpendicular to the conveying direction of the prestressed end face flange, the sensor fixing rail (90) is provided with a fixing groove (91) extending straight along the conveying direction of the prestressed end face flange, the sensor mounting plate (81) is fixed to the sensor fixing rail (90) by a fastening screw, and the fastening screw is tightened in a fastening nut (110) located in the fixing groove (91).

8. The upper line conveying device according to claim 1 is characterized in that: It also includes two groups of guide assemblies symmetrically arranged in a direction perpendicular to the conveying direction of the prestressed end face flange, each group of guide assemblies includes a guide mounting plate (120) fixed to a frame (20), and a guide rod (130) fixed to the inner side of the guide mounting plate (120) and distributed above the upper line conveying roller (40), the guide rod (130) including a first guide section (131), a bent and narrowed section (132) and a second guide section (133) connected in sequence along the conveying direction of the prestressed end face flange, the first guide section (131) and the second guide section (133) both extend straight along the conveying direction of the prestressed end face flange, the bent and narrowed section (132) extends obliquely, so that the spacing between the first guide sections (131) in the two groups of guide assemblies is greater than the spacing between the second guide sections (133).

9. The upper line conveying device according to claim 1, characterized in that: A plurality of foot cups (21) and a plurality of ground anchor seats (22) are installed at the lower end of the frame (20).

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