Longitudinal prestress strand pulling device for continuous rigid frame bridge

Abstract

The invention belongs to the technical field of strand pulling devices, and particularly relates to a continuous rigid frame bridge longitudinal prestress strand pulling device which comprises a mounting box body, a driving module, a transmission module, a strand pulling module and a control module, and the strand pulling module is located in the mounting box body and used for fixing and limiting penetrating steel strands; the transmission module is used for transmitting power of the driving module mounted on the outer side to the strand pulling module inside; according to the invention, by starting the air supply equipment, the flushing air flow can flow along the gap area between the inner wall of the backwashing pipe and the steel strand, so that the trend that external smoke dust flows towards the interior of the mounting box body along the gap area along with the steel strand is prevented, on one hand, the cleanness of the working environment in the mounting box body is ensured, and the fault degree is reduced; and on the other hand, the smoke dust impurities attached to the surfaces of the steel strands are cleaned, abrasion caused by the surfaces of the steel strands and strand pulling module components can be reduced, and the service life of the strand pulling device is effectively prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of cable tie insertion devices, in particular to a longitudinal prestressed cable tie insertion device for a continuous rigid frame bridge. Background Art

[0002] Prestressed steel strand is a twisted steel cable composed of multiple high-strength steel wires, which has been stress-relieved and is suitable for prestressed concrete and similar purposes. The main characteristics of prestressed steel strand are high strength and good relaxation performance. In addition, it is relatively straight when unfolded. Continuous rigid frame bridge is a major bridge structure in the field of highway transportation. It can carry a large amount of traffic load and plays a vital role in transportation. The longitudinal prestressing form of the continuous rigid frame bridge has a key influence on its performance, durability, etc. Longitudinal prestressing is a force applied to the continuous rigid frame bridge by tensioning steel strands and other materials. Its main purpose is to shorten the span, increase stiffness, and improve the bearing capacity of the bridge.

[0003] When prestressed steel strands need to be installed in rigid-frame bridges and other engineering buildings, a prestressed steel strand threading machine is required for cooperation; a prestressed steel strand threading machine is a device specially used for the threading of prestressed tendons in the construction of bridges, tunnels, dams and other engineering projects. Its main function is to accurately thread the prestressed steel strands into the reserved channels according to the design requirements, preparing for the subsequent tensioning operation.

[0004] In actual operation, because the smoke concentration at the construction site is relatively high, especially the start-up of heavy construction equipment around will bring a lot of smoke, and the prestressed steel strand bundle threading machine has many mechanical transmission and meshing matching structures. As the steel strand moves and penetrates into the prestressed steel strand bundle threading machine, it may affect the coordination and operation of various components such as the bundle threading components inside the prestressed steel strand bundle threading machine, resulting in an increase in the failure rate of the bundle threading equipment during use. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a longitudinal prestressed beam threading device for a continuous rigid frame bridge.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a longitudinal prestressed beam threading device for a continuous rigid frame bridge, comprising an installation box, a drive module, a transmission module, a beam threading module and a control module. The beam threading module is located inside the installation box and is connected to connecting pipes arranged on both sides of the installation box to fix and limit the passing steel strands; the transmission module is used to transmit the power of the drive module installed on the outside to the beam threading module inside;

[0007] The beam-threading module further includes a purification component, which is used to purify dust and impurities that penetrate into the installation box;

[0008] The purification component includes a monitoring sensor and a backwash pipe, wherein the monitoring end of the monitoring sensor is in communication with the connecting pipe; the backwash pipe is arranged on the end of the connecting pipe located inside the installation box and is in communication with the connecting pipe;

[0009] One end of the backwash pipe close to the inside of the installation box is communicated with the air supply device, and one end of the backwash pipe close to the connecting pipe is communicated with the outside.

[0010] Preferably, the side wall of the backwash pipe is hollow to form an installation cavity, and the interior of the installation cavity includes a backwash area close to the inside of the installation box and a recovery area close to the connecting pipe;

[0011] The backwash area is communicated with the air supply equipment, and a backwash hole is provided on the inner wall of the backwash area, and the backwash hole is inclined to point in the direction close to the connecting pipe; a recovery hole is provided on the inner wall of the recovery area, and the recovery hole is communicated with the inside of the backwash pipe, and the recovery area is communicated with the recovery chamber provided at the bottom of the installation box through the recovery pipe, and the recovery chamber is communicated with the outside world.

[0012] Preferably, an interception ring is provided on the inner wall of the junction of the recovery pipe and the connecting pipe, the end of the interception ring close to the backwash pipe is a conical structure and is provided with a guide slope, and the recovery hole is connected to the gap area between the guide slope and the inner wall of the backwash pipe.

[0013] Preferably, the interception ring is made of elastic material, and guide wheels are evenly arranged on the inner wall of the interception ring. The guide wheels are distributed in a ring shape around the central axis of the backwash pipe, and the guide wheels are rotatably connected to the interception ring.

[0014] Preferably, a cleaning area is provided between the backwash area and the recovery area, the inner wall of the cleaning area is provided with an annular groove, a sweeping brush ring is slidably provided on the inner wall of the annular groove, the sweeping brush ring is controlled to rotate by a driving assembly provided inside the cleaning area, and bristles are evenly provided on the inner wall of the sweeping brush ring.

[0015] Preferably, a receiving hole is provided on one side of the sweeping ring close to the backwash hole, and the receiving hole is communicated with a flushing chamber provided inside the sweeping ring; flushing holes are evenly provided on the inner wall of the sweeping ring at the positions between the bristles, and the flushing holes are communicated with the inside of the flushing chamber.

[0016] Preferably, a combing rod is provided inside the flushing hole, the end of the combing rod extends into the gap between the bristles, and the end of the combing rod is made of elastic material.

[0017] Preferably, the outer surface of the combing rod is evenly provided with tidying teeth, and the tidying teeth are laterally embedded in the gap area between the bristles;

[0018] The combing rod is a tubular structure, the interior of the tidying teeth is hollow and communicated with the interior of the combing rod, and through holes are evenly arranged on the surface of the tidying teeth.

[0019] Preferably, a propulsion tube is provided inside the receiving hole, and an end of the propulsion tube is communicated with the inner area of ​​the combing rod.

[0020] Preferably, the propulsion tube is slidably connected to the inner wall of the receiving hole, and the limiting rod provided on the side wall of the propulsion tube is slidably embedded in the limiting hole provided on the inner wall of the flushing cavity, and the end of the limiting rod is connected to the inner wall of the limiting hole through an elastic member;

[0021] The part of the end of the propulsion tube close to the combing rod is a telescopic hose structure, and the flushing hole is a tapered hole structure. The combing rod is rotatably connected to the side wall of the flushing hole through a rotating shaft.

[0022] The beneficial effects of the present invention are as follows:

[0023] In the longitudinal prestressed bundle threading device for a continuous rigid frame bridge described in the present invention, when the monitoring sensor detects that the concentration of external smoke and dust is too high, the inspection personnel can remind the engineering personnel to start the air supply equipment, so that the flushing airflow flows into the backwash pipe and flows along the gap area between the inner wall of the backwash pipe and the steel strand, thereby preventing the external smoke and dust from flowing along the gap area toward the inside of the installation box along the steel strand; on the one hand, this ensures the cleanliness of the working environment inside the installation box, so that each module inside can operate normally and reduce the degree of failure; on the other hand, the smoke and dust impurities adhering to the surface of the steel strand are cleaned, and the wear of the steel strand surface impurities on the steel strand surface and the bundle threading module components during the contact and cooperation process between the steel strand and the bundle threading module can be reduced, thereby ensuring that the steel strand is intact while increasing the working life of the bundle threading module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 is a partial cross-sectional view of the present invention;

[0027] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0029] Figure 5 It is a schematic diagram of the cooperation between the combing rod and the propulsion tube in the present invention;

[0030] Figure 6 It is a cross-sectional view of a carding rod in the present invention.

[0031] In the figure: installation box 1, connecting pipe 11, recovery chamber 12, purification component 2, backwash pipe 21, air supply equipment 22, installation chamber 23, backwash area 231, recovery area 232, backwash hole 233, recovery hole 234, recovery pipe 235, interception ring 24, guide slope 241, guide wheel 242, cleaning area 25, sweeping ring 251, driving component 252, receiving hole 253, flushing chamber 254, flushing hole 255, limiting hole 256, combing rod 26, sorting teeth 261, propulsion pipe 27, limiting rod 271, steel strand 3. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] A longitudinal prestressed beam threading device for a continuous rigid frame bridge, as shown in the accompanying drawings of the specification Figure 1-Figure 6 As shown, it includes an installation box 1, a drive module, a transmission module, a beam insertion module and a control module. The beam insertion module is located inside the installation box 1, and specifically includes structures such as a beam insertion rod, a guide wheel and a clamping device, which are used to stably limit the moving steel strand 3; the connecting pipes 11 arranged on both sides of the installation box 1 respectively play the role of incoming and outgoing lines, so that the steel strand 3 can pass through the installation box 1 smoothly, and the auxiliary beam insertion module fixes and limits the prestressed steel strand 3 passing through; the transmission module includes a reducer and a chain and sprocket transmission structure, which is used to transmit the power generated by the motor installed on the outside as a drive module to the internal beam insertion module;

[0035] The control module includes electrical control equipment, an operation interface and a display interface, which are used to facilitate external construction personnel to control the bundle threading device and adjust the bundle threading speed and direction of the steel strand 3 and the tension of the steel strand 3;

[0036] The beam-threading module also includes a purification component 2, which is used to purify dust impurities that penetrate into the installation box 1; the purification component 2 includes a monitoring sensor and a backwash pipe 21, and the monitoring sensor here can adopt the smoke concentration detection sensor of the existing construction site, and the smoke concentration data obtained by the detection can be transmitted to the display interface, which is convenient for engineering personnel to understand; the monitoring end of the monitoring sensor is connected to the connecting pipe 11, and the connecting pipe 11 is connected to the outside world, which can better monitor the smoke concentration of the construction site around the beam-threading device; the backwash pipe 21 is arranged on the end of the connecting pipe 11 located inside the installation box 1, and is connected to the connecting pipe 11;

[0037] One end of the backwash pipe 21 close to the inside of the installation box 1 is communicated with the air supply device 22, where the air supply device 22 can be an air pump device. One end of the backwash pipe 21 close to the connecting pipe 11 is communicated with the outside.

[0038] Specific workflow: During the construction of the rigid frame bridge, in order to facilitate the smooth introduction of the longitudinal prestressed steel strands 3, the prestressed bundle insertion device of the present application can be placed at a predetermined position, and then the steel strands 3 are extended from one side through the connecting pipe 11 into the interior of the installation box 1, and extended from the connecting pipe 11 on the other side and embedded in the reserved channel; the drive module is started by the control button on the control interface, and the power is transmitted to the internal bundle insertion module through the transmission module, and the steel strands 3 cooperate with the bundle insertion module in the installation box 1, so that the engineering operator can adjust the bundle insertion speed of the steel strands 3 through the control interface, and even when the movement is not smooth, the steel strands 3 can be started in reverse to extract the steel strands 3, thereby improving the installation efficiency of the steel strands 3;

[0039] In actual operation, due to the high smoke concentration at the construction site, especially the startup of heavy construction equipment in the surrounding area will bring a lot of smoke, and the installation box 1 has a lot of mechanical transmission and meshing matching structures. As the steel strand 3 moves and penetrates into the installation box 1, it may affect the coordinated operation between the various components of the bundle insertion module and the transmission module in the installation box 1, resulting in an increase in the failure rate of the bundle insertion device; therefore, the present application sets a backwash pipe 21 at the end of the connecting pipe 11 that directly connects the installation box 1 with the outside world. After passing through the connecting pipe 11, the steel strand 3 must also pass through the backwash pipe 21 before entering the installation box 1. Similarly, when the steel strand 3 is discharged, it needs to pass through the backwash pipe 21 before it can move to the outside world through the connecting pipe 11;

[0040] Therefore, when the monitoring sensor detects that the external smoke concentration is too high, the engineering personnel can be reminded to start the air supply equipment 22, so that the flushing airflow flows into the backwash pipe 21 and flows along the gap area between the inner wall of the backwash pipe 21 and the steel strand 3; in this way, the steel strand 3 inside the backwash pipe 21 opened on both sides of the installation box 1 are all affected by the flushing airflow pointing from the inside of the installation box 1 to the outside, thereby preventing the external smoke from flowing along the gap area with the steel strand 3 toward the inside of the installation box 1; and the flushing airflow inside the backwash pipe 21 The surface of the steel strand 3 is wrapped and flushed, and the smoke and dust impurities adhering to the surface of the steel strand 3 are also taken away. On the one hand, this ensures the cleanliness of the working environment inside the installation box 1, so that each module can operate normally and reduce the degree of failure. On the other hand, cleaning the smoke and dust impurities adhering to the surface of the steel strand 3 can also reduce the wear of the surface of the steel strand 3 and the components of the bundle threading module caused by the impurities on the surface of the steel strand 3 during the contact and cooperation between the steel strand 3 and the bundle threading module. This ensures that the steel strand 3 is intact while increasing the working life of the bundle threading module.

[0041] Embodiment 2:

[0042] On the basis of the first embodiment, the side wall of the backwash pipe 21 is hollow to form an installation cavity 23, and the interior of the installation cavity 23 includes a backwash area 231 close to the inside of the installation box 1 and a recovery area 232 close to the connecting pipe 11;

[0043] The backwash area 231 is communicated with the air supply equipment 22, and a backwash hole 233 is provided on the inner wall of the backwash area 231, and the backwash hole 233 is inclined to point in the direction close to the connecting pipe 11; a recovery hole 234 is provided on the inner wall of the recovery area 232, and the recovery hole 234 is communicated with the inside of the backwash pipe 21, and the recovery area 232 is communicated with the recovery chamber 12 provided at the bottom of the installation box 1 through the recovery pipe 235, and the recovery chamber 12 is communicated with the outside.

[0044] Specific workflow: Based on the specific workflow in the first embodiment, in order to better recover the dust and impurities brought into the installation box 1 by the steel strand 3, a recovery area 232 is set; in this way, when the air supply device 22 is started, the flushing airflow can be directly introduced into the backwash area 231, and then released from the backwash hole 233 on the inner wall of the backwash area 231, and an impact airflow from the inside of the installation box 1 to the outside is formed in the gap between the steel strand 3 and the inner wall of the backwash pipe 21, so as to prevent the smoke and dust flowing into the installation box 1 along with the steel strand 3 from penetrating into the inside of the installation box 1;

[0045] Furthermore, the recovery hole 234 is located on the inner wall of the backwash pipe 21 near the connecting pipe 11, so the flowing airflow is sucked into the recovery hole 234 when it is close to the recovery hole 234, and then flows into the recovery chamber 12 along the recovery pipe 235 to be collected; in this process, the dust impurities that penetrate inward along the connecting pipe 11 and the dust impurities washed down by the flushing airflow are all absorbed by the recovery hole 234, thus preventing the external dust impurities from polluting the internal working environment of the installation box 1, and effectively ensuring the normal operation of the bundle penetration device of the present application;

[0046] Regarding the dust and impurities collected in the recovery chamber 12, the recovery chamber 12 can be opened from the outside at regular intervals to clean the dust and impurities inside, so as to ensure the normal recovery and processing of dust and impurities during the backwashing process; and in order to reduce the pollution of dust in the external environment, the exhaust end of the air supply equipment 22 is connected to the recovery chamber 12, so as to provide power for the connecting pipe 11 to exhaust air from the inside of the recovery area 232; and the air outlet end of the air supply equipment 22 is connected to the backwashing area 231, and is located inside the recovery chamber 12, and a filter is provided between the exhaust end of the air supply equipment 22 and the connecting position of the recovery pipe 235, so that after the airflow flows from the connecting pipe 11 into the recovery chamber 12, it needs to pass through the filter to remove dust and impurities, and then enter the backwashing area 231 through the air supply equipment 22, so as to realize the self-circulation of the flushing airflow in a local area, which can further reduce the path for the inflow of external air and ensure that the internal working environment remains clean.

[0047] Embodiment three:

[0048] On the basis of the second embodiment, an interception ring 24 is provided on the inner wall of the joint of the recovery pipe 235 and the connecting pipe 11. The end of the interception ring 24 close to the backwash pipe 21 is a conical structure and is provided with a guide slope 241. The recovery hole 234 is connected to the gap area between the guide slope 241 and the inner wall of the backwash pipe 21.

[0049] The interception ring 24 is made of elastic material, and guide wheels 242 are evenly arranged on the inner wall of the interception ring 24 . The guide wheels 242 are distributed in a ring shape around the central axis of the backwash pipe 21 , and the guide wheels 242 are rotatably connected to the interception ring 24 .

[0050] Specific work flow: On the basis of the specific work flow in Example 2, the interception ring 24 is located at the junction of the recovery pipe 235 and the connecting pipe 11, and the selection of the interception ring 24 needs to be based on the thickness of the steel strand 3, so that the steel strand 3 contacts the inner wall of the interception ring 24 after being extended, and the elastic interception ring 24 has an extrusion and clamping effect on the surface of the steel strand 3, so that the steel strand 3 is limited to the center position of the interception ring 24, and after the steel strand 3 passes through the interception ring 24, due to the clamping and limiting effect of the interception ring 24 and the rigidity of the steel strand 3 itself, the steel strand 3 moves along a trajectory close to the central axis of the backwash pipe 21; in this way, the steel strand 3 has a smaller contact degree with the inner wall of the backwash pipe 21, and the gap between them tends to be a complete ring, and the airflow flowing out of the backwash hole 233 can more comprehensively wrap the surface of the steel strand 3, and perform more sufficient flushing and cleaning, so that the impurity particles adhering to the surface of the steel strand 3 are fully separated;

[0051] Furthermore, the guide wheel 242 arranged on the inner wall of the interception ring 24 reduces the friction resistance between the steel strand 3 and the inner wall of the interception ring 24 when the steel strand 3 passes through the interception ring 24. In addition, the setting of the interception ring 24, on the one hand, prevents the outside air from flowing inward along with the steel strand 3, thereby reducing the dust and impurities from the outside penetrating inward; on the other hand, it also makes the flushing airflow flushing outward be blocked after contacting the interception ring 24, and under the action of the guiding bevel 241 at the end of the interception ring 24, it flows toward the recovery hole 234 located in the gap between the guiding bevel 241 and the inner wall of the backwash pipe 21, so that the dust and impurities brought into the installation box 1 by the movement of the steel strand 3 are fully recovered and purified, thereby ensuring the normal operation of the components of the bundle passing module and the transmission module inside the installation box 1.

[0052] Embodiment 4:

[0053] On the basis of Example 3, a cleaning area 25 is arranged between the backwash area 231 and the recovery area 232, and an annular groove is arranged on the inner wall of the cleaning area 25, and a sweeping brush ring 251 is slidably arranged on the inner wall of the annular groove, and the sweeping brush ring 251 is rotated under the control of the driving component 252 arranged inside the cleaning area 25, and bristles are evenly arranged on the inner wall of the sweeping brush ring 251; there are multiple possible implementation schemes of the driving component 252 here, all of which can be applicable to the present application, and a possible implementation scheme is provided here, specifically, including a driving motor arranged inside the cleaning area 25, and the output shaft of the driving motor is provided with a driving gear, and the driving gear is meshed with the annular gear arranged on the outer ring of the sweeping brush ring 251, so that after the driving motor is started, the driving gear is driven to rotate, thereby driving the meshing sweeping brush ring 251 to rotate, so that the sweeping brush ring 251 rotates around the steel strand 3.

[0054] Specific workflow: Based on the specific workflow in Example 3, in order to further clean the impurities and dust adhering to the surface of the steel strand 3, a sweeping brush ring 251 is provided. When the steel strand 3 passes through the middle area of ​​the sweeping brush ring 251, it contacts the bristles evenly arranged on the inner wall of the sweeping brush ring 251, so that the dust and impurities adhering to the surface of the steel strand 3 fall off under the scraping action of the bristles.

[0055] Furthermore, in order to improve the cleaning effect, the micro-drive motor located inside the cleaning area 25 is started by the controller to drive the sweeping brush ring 251 to rotate; the rotating sweeping brush ring 251 surrounds the laterally moving steel strand 3, and while rotating in a circular manner, drives the bristles to clean the dust and impurities adhered to the surface of the steel strand 3, so that the dust and impurities adhered to the surface of the steel strand 3 are cleaned more fully;

[0056] And when the airflow flowing through the backwash hole 233 encounters the sweeping brush ring 251, it concentrates on flowing through the contact gap between the bristles on the inner wall of the sweeping brush ring 251 and the steel strand 3, thereby improving the cleaning effect of the bristles on the surface of the steel strand 3 and promptly taking away the cleaned dust and impurities, avoiding the accumulation of dust and impurities in the gaps between the bristles that affect the cleaning effect of the bristles, and also reducing the wear on the surface of the steel strand 3 caused by particulate impurities in the gap area, thereby ensuring the safety of the steel strand 3.

[0057] Embodiment five:

[0058] On the basis of the fourth embodiment, a receiving hole 253 is provided on the side of the sweeping ring 251 close to the backwashing hole 233, and the receiving hole 253 is communicated with the flushing chamber 254 provided inside the sweeping ring 251; flushing holes 255 are evenly provided on the inner wall of the sweeping ring 251 at the position of the combing gap, and the flushing holes 255 are communicated with the inside of the flushing chamber 254; a combing rod 26 is provided inside the flushing hole 255, and the end of the combing rod 26 extends into the combing gap, and the end of the combing rod 26 is a spherical structure, so as to reduce the impact wear on the end of the combing rod 26 when the end of the combing rod 26 contacts the surface of the steel strand 3;

[0059] The outer surface of the combing rod 26 is evenly provided with tidying teeth 261, and the tidying teeth 261 are transversely embedded in the gap area between the bristles; the combing rod 26 is a tubular structure, the interior of the tidying teeth 261 is hollow and communicated with the interior of the combing rod 26, and the surface of the tidying teeth 261 is evenly provided with through holes;

[0060] Specific workflow: Based on the specific workflow in the fourth embodiment, when the airflow from the backwash hole 233 into the backwash pipe 21 flows horizontally along the gap between the inner wall of the backwash pipe 21 and the steel strand 3, it is blocked by the sweeping brush ring 251, and then a part of the airflow passes through the gap between the bristles and the steel strand 3, and the other part of the airflow enters the receiving hole 253, and then flows out from the flushing hole 255 located in the gap between the bristles, so that the steel strand 3 and the bristles are flushed by the horizontal airflow, and at the same time, they are affected by the longitudinal airflow released by the flushing hole 255. The multi-angle airflow flushing effect makes the bristles cleaned more fully;

[0061] And because the flushing hole 255 is located at the connection part between the bristles and the inner wall of the sweeping brush ring 251, the airflow released from the inside of the bristles to the outside makes the dust and impurities adhering to the bristles be cleaned more fully; at the same time, the end of the combing rod 26 arranged at the middle position inside the flushing hole 255 extends into the bristles, and the combing rod 26 swings elastically with the outflowing airflow and drives the combing teeth evenly arranged on the surface to contact the bristles. When the combing teeth swing, they pass through the gaps between the bristles, so that the bristles that tend to stick to each other are dispersed, and the granular impurities in the gaps between the bristles are fully taken away, so that the bristles are cleaned more fully, and the cleaning effect of the bristles on the steel strands 3 is guaranteed;

[0062] The combing rods 26 are arranged in a ring around the steel strands 3. When the steel strands 3 tend to tilt downward due to gravity, the steel strands 3 are supported so that a gap is maintained between the lower side of the surface of the steel strands 3 and the inner wall of the sweeping ring 251, ensuring that the transverse flushing airflow passes through the gap and fully wraps and flushes the surface of the steel strands 3.

[0063] Furthermore, the combing rod 26 with a tubular structure allows part of the airflow flowing into the flushing chamber 254 to flow into the combing rod 26, and form a concentrated impact airflow from the end opening of the combing rod 26 to act on the surface of the steel strand 3. At the same time, part of the airflow will flow into the hollow finishing teeth 261 inside, and flow out from the end opening of the finishing teeth 261 and the through holes evenly arranged on the surface, effectively expanding the scope and angle of action of the impact airflow, so that when the finishing teeth 261 are embedded in the gaps between the bristles, the airflow will penetrate into the gaps between the bristles and take away impurities adhered to the gaps between the bristles, thereby improving the cleaning efficiency of the bristles and ensuring the normal operation of the bristles on the steel strand 3.

[0064] Embodiment six:

[0065] On the basis of the fifth embodiment, a propulsion tube 27 is arranged inside the receiving hole 253, and the end of the propulsion tube 27 is communicated with the inner area of ​​the combing rod 26; the propulsion tube 27 is slidably connected with the inner wall of the receiving hole 253, and the limiting rod 271 arranged on the side wall of the propulsion tube 27 is slidably embedded in the limiting hole 256 arranged on the inner wall of the flushing chamber 254, and the end of the limiting rod 271 is connected to the inner wall of the limiting hole 256 through an elastic member;

[0066] The end of the propulsion tube 27 near the combing rod 26 is a telescopic hose structure, and the flushing hole 255 is a tapered hole structure, and the middle part of the combing rod 26 is rotatably connected to the side wall of the flushing hole 255 through a rotating shaft;

[0067] Specific working process: Based on the specific working process in Example 4, after the airflow flowing horizontally along the gap area between the inner wall of the backwash pipe 21 and the steel strand 3 flows into the receiving hole 253, a part of it will flow into the propulsion pipe 27, and then flow into the connected combing rod 26 along the propulsion pipe 27, and the impact of the horizontal airflow pushes the propulsion pipe 27 to slide horizontally, and drives the connected combing rod 26 to swing around the middle rotating shaft; and the scouring hole 255 is a conical hole structure, the large end of the scouring hole 255 is located on the inner wall of the backwash pipe 21, and the rotating shaft is located near the inner wall of the scouring hole 255 near the small end, And the connecting position of the rotating shaft is close to the end where the combing rod 26 is connected to the pushing tube 27, so that when the pushing tube 27 slides laterally to push the connected end of the combing rod 26 to swing, the end of the combing rod 26 close to the steel strand 3 swings more significantly near the large end position of the flushing hole 255, fully contacting the bristles arranged on the inner wall of the combing sweeping ring 251; and the swinging of the combing rod 26 increases the range of action of the impact airflow released by the end of the combing rod 26, so that more areas of the steel strand 3 are affected by the combing rod 26, ensuring that the part of the steel strand 3 entering the interior of the installation box 1 remains clean, thereby ensuring the normal operation of the bundle threading device.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A longitudinal prestressed beam threading device for a continuous rigid frame bridge, comprising an installation box (1), a drive module, a transmission module, a beam threading module and a control module, wherein the beam threading module is located inside the installation box (1), and is connected to the installation box (1) by connecting pipes (11) arranged on both sides thereof, so as to fix and limit the passing steel strands (3); the transmission module is used to transmit the power of the drive module installed on the outside to the beam threading module inside; Features: The beam-threading module further comprises a purification component (2), wherein the purification component (2) is used to purify dust and impurities that penetrate into the interior of the installation box (1); The purification component (2) comprises a monitoring sensor and a backwash pipe (21), wherein the monitoring end of the monitoring sensor is in communication with the connecting pipe (11); the backwash pipe (21) is arranged on the end of the connecting pipe (11) located inside the installation box (1) and is in communication with the connecting pipe (11); One end of the backwash pipe (21) close to the interior of the installation box (1) is in communication with the air supply device (22), and one end of the backwash pipe (21) close to the connecting pipe (11) is in communication with the outside.

2. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 1, characterized in that: The side wall of the backwash pipe (21) is hollow to form an installation cavity (23), and the interior of the installation cavity (23) includes a backwash area (231) close to the inside of the installation box (1) and a recovery area (232) close to the connecting pipe (11); The backwash area (231) is in communication with the air supply device (22), and a backwash hole (233) is provided on the inner wall of the backwash area (231), and the backwash hole (233) is inclined to point in a direction close to the connecting pipe (11); a recovery hole (234) is provided on the inner wall of the recovery area (232), and the recovery hole (234) is in communication with the inside of the backwash pipe (21), and the recovery area (232) is in communication with a recovery chamber (12) provided at the bottom of the installation box (1) through a recovery pipe (235), and the recovery chamber (12) is in communication with the outside.

3. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 2, characterized in that: An interception ring (24) is provided on the inner wall of the joint between the recovery pipe (235) and the connecting pipe (11); the end of the interception ring (24) close to the backwash pipe (21) is a conical structure and is provided with a guide slope (241); the recovery hole (234) is in communication with the gap area between the guide slope (241) and the inner wall of the backwash pipe (21).

4. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 3 is characterized in that: The interception ring (24) is made of elastic material, and guide wheels (242) are evenly arranged on the inner wall of the interception ring (24), the guide wheels (242) are distributed in an annular shape around the central axis of the backwash pipe (21), and the guide wheels (242) are rotatably connected to the interception ring (24).

5. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 3 is characterized in that: A cleaning area (25) is arranged between the backwash area (231) and the recovery area (232), the inner wall of the cleaning area (25) is provided with an annular chute, a sweeping brush ring (251) is slidably arranged on the inner wall of the annular chute, the sweeping brush ring (251) is controlled by a driving assembly (252) arranged inside the cleaning area (25) to rotate, and bristles are evenly arranged on the inner wall of the sweeping brush ring (251).

6. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 5, characterized in that: A receiving hole (253) is arranged on one side of the sweeping ring (251) close to the backwash hole (233), and the receiving hole (253) is communicated with a flushing cavity (254) arranged inside the sweeping ring (251); flushing holes (255) are evenly arranged on the inner wall of the sweeping ring (251) at the positions between the bristles, and the flushing holes (255) are communicated with the inside of the flushing cavity (254).

7. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 6, characterized in that: A combing rod (26) is arranged inside the flushing hole (255), the end of the combing rod (26) extends into the gap between the bristles, and the end of the combing rod (26) is made of elastic material.

8. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 7, characterized in that: The outer surface of the combing rod (26) is evenly provided with tidying teeth (261), and the tidying teeth (261) are laterally embedded in the gap area between the bristles; The combing rod (26) is a tubular structure, the interior of the arranging teeth (261) is hollow and communicates with the interior of the combing rod (26), and through holes are evenly arranged on the surface of the arranging teeth (261).

9. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 8, characterized in that: A propulsion tube (27) is arranged inside the receiving hole (253), and the end of the propulsion tube (27) is communicated with the inner area of ​​the combing rod (26).

10. The longitudinal prestressed beam threading device for a continuous rigid frame bridge according to claim 9, characterized in that: The propulsion tube (27) is slidably connected to the inner wall of the receiving hole (253), and the limiting rod (271) provided on the side wall of the propulsion tube (27) is slidably embedded in the limiting hole (256) provided on the inner wall of the flushing chamber (254), and the end of the limiting rod (271) is connected to the inner wall of the limiting hole (256) via an elastic member; The portion of the end of the propulsion tube (27) close to the combing rod (26) is a telescopic hose structure, and the flushing hole (255) is a conical hole structure. The combing rod (26) is rotatably connected to the side wall of the flushing hole (255) via a rotating shaft.

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