A slip synchronizer and a prestressed beam pipeline extraction hose and a whole bundle threading trolley with the slip synchronizer

Abstract

The present invention relates to a transmission device, in particular to a slip synchronizer, in which two transmission mechanism output shafts are respectively equipped with an outer swing arm and an inner swing arm connected by an intermediate shaft, and both the inner and outer swing arms have transition gears that mesh with the intermediate gears on the intermediate shaft, so that one output shaft forms a complete transmission chain through the gears on the output shaft, the transition gears and the intermediate shaft gears, and reaches the output gear on the other output shaft, thereby realizing synchronous rotation of the two output shafts. The present invention also relates to a pipe pulling and bundling trolley, in particular to a pipe pulling and bundling trolley for prestressed pipes of bridges. It includes a traveling vehicle body, a lifting device and a pipe pulling and bundling machine, and the transmission mechanism output shafts of the two transversely adjacent chains of the head of the pipe pulling and bundling machine are respectively connected to the aforementioned slip synchronizer. The present invention can well ensure strict synchronization between the two transmission parts of each head.

Description

Technical Field

[0001] The present invention relates to a transmission device, in particular to a slip synchronizer. The present invention also relates to a pipe pulling and bundling trolley, in particular to a pipe pulling and bundling trolley for prestressed pipes of bridges. Background Art

[0002] Patent document No. CN207143737 U discloses a bridge prestressed pipe pulling and bundling trolley, which realizes the "bundling cable threading process". It solves the "disordered winding" problem that has plagued the "single cable threading process" for a long time. However, this technology has the following defects: when the load size of the transmission mechanism of each pair of chains of the pipe pulling and bundling machine head is different, the rated speed of the motor will also be different. Under the influence of long-term motor starting error and working load, the speed of each pair of adjacent chains is not synchronized, and the two groups of slips collide with each other, seriously affecting normal operation. In addition, the lifting and lowering of the two gantries in the double-gantry form are not synchronized. After long-term use, the accumulated error causes the machine head to be non-level, which affects the normal operation of the machine head after tilting. In the single-gantry form, the machine head alignment on the side where the gantry is not parallel to the bridge web is far less convenient than the side where the gantry is not parallel to the bridge web. Using the lifting gantry to position the machine head makes the machine head positioning inaccurate. The chain slips of the pipe pulling and bundling machine head cannot hold the hose or steel strand bundle with a smaller diameter. There is no efficient and strong diagonal brace on the side, which makes the machine head unstable after it is raised; the chassis frame of the walking system is a rectangular plane, which is not suitable for the normal height of the beam field after matching the tire height, affecting normal use. When performing the threading operation, it is necessary to manually judge whether the threading length is appropriate, which is inefficient and difficult to ensure the accuracy of the threading length. Summary of the invention

[0003] The present invention aims at the defect that each pair of chains of the machine head of the tube pulling and bundle threading machine in the prior art rotate asynchronously, and proposes a slip synchronizer to ensure the synchronous rotation of each pair of chains. At the same time, in view of the technical defects of the prior art such as inaccurate machine head positioning, low vehicle body stability, and mismatch between vehicle body chassis height and bridge height, a rubber tube pulling and steel strand threading trolley is proposed, which has good synchronization of two chains of the machine head, accurate positioning, vehicle body stability, matching between vehicle body chassis height and bridge height, and automatic shutdown when threading is completed.

[0004] The present invention is achieved through the following technical solutions:

[0005] A slip synchronizer is provided, wherein the output shafts of two transmission mechanisms are respectively equipped with an outer swing arm and an inner swing arm connected by an intermediate shaft, and the inner and outer swing arms have transition gears that mesh with the intermediate gear on the intermediate shaft, so that one output shaft forms a complete transmission chain through the gears on the output shaft, the transition gears and the intermediate shaft gears to reach the output gear on the other output shaft, thereby realizing synchronous rotation of the two output shafts.

[0006] A bridge prestressed pipe pipe pulling and bundling trolley is also provided, which includes a traveling body, a lifting device and a pipe pulling and bundling machine, and is characterized in that the output shafts of the transmission mechanism of the two transversely adjacent chains of the head of the pipe pulling and bundling machine are respectively equipped with an outer swing arm and an inner swing arm connected by an intermediate shaft, and the inner and outer swing arms have transition gears that mesh with the intermediate gears on the intermediate shaft, so that an output shaft forms a complete transmission chain through the gears on the output shaft, the transition gears and the intermediate shaft gears, and reaches the output gear on the other output shaft, thereby realizing synchronous rotation of the two output shafts.

[0007] Preferably, there is a lifting device at each end of the walking vehicle body, and the driving cylinders of the lifting devices at both ends are respectively connected to a synchronous cylinder. The synchronous cylinder includes a first cylinder barrel, a second cylinder barrel and a middle partition located between the two cylinder barrels. The three are combined to form the cylinder barrel of the synchronous cylinder. A piston rod passes through the middle partition plate and can slide freely through the hole of the middle partition plate. The first cylinder barrel and the second cylinder barrel respectively have a first piston and a second piston respectively fixedly connected to the piston rod. The oil inlet pipe of the synchronous cylinder is respectively connected to the oil inlet port of the first cylinder barrel and the second cylinder barrel, and the oil outlet port of the first cylinder barrel and the second cylinder barrel is respectively connected to the driving cylinder of the lifting devices at both ends.

[0008] Preferably, one end of the traveling vehicle body is provided with a lifting device, and each row of chains in the transverse direction of the head of the tube pulling and bunching machine is composed of two chains connected end to end in the longitudinal direction.

[0009] Preferably, the slips on two transversely adjacent chains of the tube pulling and bundling machine head are arranged in a staggered manner.

[0010] Preferably, the tube pulling and bundling machine head includes a transverse moving frame and a longitudinal moving frame. The transverse moving frame is located on the track of the work table base, and the longitudinal moving frame is located on the track of the transverse moving frame. It also includes a transverse moving drive device and a longitudinal moving drive device, which are respectively connected to the transverse moving frame and the longitudinal moving frame.

[0011] Preferably, the chassis of the traveling vehicle body is a concave structure in which the area in the middle accommodating the work surface is sunken relative to the two ends and the wheel axle connection part.

[0012] Preferably, the traveling vehicle body is equipped with an inclined support cylinder, one end of which is connected to the upper end of the lifting door frame, and the other end is a free end, and the free end is supported on the ground during operation.

[0013] Preferably, a rotation counter is installed on a chain secondary shaft of the tube pulling and bunching machine head, and the rotation counter transmits data on the number of rotations of the secondary shaft to a control unit. The control unit sends a stop signal to the motor of the chain of the tube pulling and bunching machine head according to the received data on the number of rotations of the secondary shaft.

[0014] Preferably, a laser sensor is installed at the other end of the beam of the trolley, and the laser sensor is connected to a wireless sensor transmitter. An infinite sensor receiver is installed on the trolley, and the infinite sensor is connected to a delay switch in the motor power supply circuit of the head chain of the tube pulling and beam threading machine.

[0015] Compared with the prior art, the technical solution adopted in the present invention can well ensure the synchronous operation of each pair of chains of the machine head and the synchronous lifting of the two gantries, while enabling the machine head to be accurately positioned in both the horizontal and longitudinal directions. The chain cava can be suitable for any diameter, the stability of the vehicle body is greatly enhanced, the height of the vehicle chassis is also well matched with the height of the bridge, and the machine automatically stops when the bundle reaches the appropriate length. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the bridge prestressed pipe pulling and bundling trolley described in the present invention.

[0017] Figure 2 It is a cross-sectional view of the synchronous oil cylinder described in the present invention.

[0018] Figure 3 It is a structural schematic diagram of the transmission chain driving device of the head of the tube pulling and bundling machine described in the present invention.

[0019] Figure 4 It is a structural schematic diagram of the slip synchronizer of the transmission chain driving device of the head of the tube pulling and bunching machine described in the present invention.

[0020] Figure 5 It is a structural schematic diagram of the transmission chain of the head of the tube pulling and bunching machine described in the present invention.

[0021] Figure 6 It is a partial enlarged view of the transmission chain of the head of the tube pulling and bundling machine described in the present invention.

[0022] Figure 7 It is a structural schematic diagram of the transverse and longitudinal movement frame of the head of the tube pulling and bundling machine described in the present invention.

[0023] Figure 8 It is a structural schematic diagram of the underframe of the vehicle according to the present invention.

[0024] Fig. 9 It is a working schematic diagram of the bridge prestressed pipe pulling and bundling trolley described in the present invention.

[0025] Fig.10 It is a schematic diagram of the installation position of the rotation counter described in the present invention.

[0026] Fig.11 It is a schematic diagram of the installation structure of the rotation counter described in the present invention.

[0027] Fig.12 It is a working principle diagram of the rotation counter and control unit described in the present invention.

[0028] Fig.13 It is a working principle diagram of the laser sensor and control unit described in the present invention.

[0029] 1. Slant support cylinder, 2. Lifting gantry, 3. Pipe pulling and threading machine, 4. Walking chassis, 5. Synchronous cylinder, 6. Transverse cylinder, 7. Transverse wheel, 8. Transverse track, 9. Longitudinal track, 10. Longitudinal wheel, 11. Longitudinal cylinder, 12. Second cylinder, 13. Second piston, 14. Middle partition, 15. First cylinder, 16. First piston, 17. Piston rod, 18. Main shaft wheel 1, 19. Small wheel 1, 20. Small wheel 2, 21. Middle wheel, 22. Large wheel 3, 23. Large wheel 2, 24. Large wheel 1, 25. Main shaft wheel 2, 26. Main shaft assembly, 27. Sprocket, 28. Key bar, 29. Main shaft, 30. Slips, 31 slips, 32 rotation counter, 33 rotation counter assembly, 34 machine head chain motor switch, 35 trolley power supply, 36 machine head assembly, 37 rotation counter switch, 38 rotation counter power supply, 39 control unit, 40 rotation counter stator, 41 rotation counter fixing bracket, 42 rotation counter mover, 43 machine head countershaft, 44 machine head upper cover, 45 steel strand outlet end anchor, 46 laser sensor, 47 wireless sensor receiver, 48 trolley working machine head, 49 trolley main switch, 50 delay switch, 51 wireless sensor transmitter. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, the bridge prestressed pipe pulling and bundling trolley of the present invention comprises a traveling vehicle body, a lifting gantry 2 and a pulling and bundling machine 3. The traveling vehicle body is equipped with a diagonal support cylinder 1. One end of the diagonal support cylinder 1 is connected to the upper end of the lifting gantry 2, and the other end is a free end. The free end is supported on the ground during operation. The support of the diagonal support cylinder 1 greatly enhances the stability of the traveling vehicle body.

[0032] In order to ensure that the lifting gantry 2 at both ends is raised and lowered synchronously, the driving cylinders of the lifting gantry 2 at both ends are respectively connected to Figure 2The synchronous cylinder 5 shown is connected. The synchronous cylinder 5 includes a first cylinder barrel 15, a second cylinder barrel 12 and a middle partition plate 14 located between the two cylinder barrels, which are combined to form the cylinder barrel of the synchronous cylinder 5. A piston rod 17 passes through the middle partition plate 14 and can slide freely through the hole of the middle partition plate 14. The first cylinder barrel 15 and the second cylinder barrel 12 respectively have a first piston 16 and a second piston 13 respectively fixedly connected to the piston rod 17. The oil inlet pipe of the synchronous cylinder 5 is respectively connected to the oil inlets P1 and P2 of the first cylinder barrel 15 and the second cylinder barrel 12, and the oil outlets K1 and K2 of the first cylinder barrel 15 and the second cylinder barrel 12 are respectively connected to the driving cylinders of the lifting gantry 2 at both ends. When the system pressure oil from the pump station enters the first cylinder 15 and the second cylinder 12 through the oil inlets P1 and P2 through the oil pipe joint K0 and pushes the piston rod 17 to move to the left, the first cylinder 15 and the second cylinder 12 supply oil to the driving cylinders of the two lifting gantries 2 through the oil outlets K1 and K2 respectively. It is not difficult to see that even if the loads of the two lifting gantries 2 are different and the oil pressures at the two oil outlets K1 and K2 of the synchronous cylinder 5 are different, the oil supply through the two oil outlets K1 and K2 is completely equal, so it can be ensured that even under different loads, the lifting heights of the two lifting gantries 2 are the same.

[0033] like Figure 3 As shown, each row of chains in the transverse direction of the head of the tube pulling and bunching machine of the present invention is composed of two chains L1 and L2 connected end to end in the longitudinal direction, so that both the left and right sides of the trolley can work. Fig. 9 As shown, since the angle of the lifting gantry 2 is parallel to the angle of the side of the bridge web, the left and right sides of the trolley work alternately, so that the trolley can easily align the head of the tube pulling and bundle threading machine with the holes on the side of the bridge web by changing the direction.

[0034] like Figure 3 , Figure 4 , Figure 5 As shown, the transmission mechanism output shafts 19 and 20 of the two adjacent chains of the head of the tube pulling and bundling machine of the present invention are respectively equipped with an outer swing arm 21 and an inner swing arm 22 connected by an intermediate shaft 23. The inner and outer swing arms 21 and 22 have transition gears that mesh with the intermediate gear 24 on the intermediate shaft 23, so that an output shaft 19 forms a complete transmission chain through the gear 18 on the output shaft, the transition gear and the intermediate shaft gear 24 to reach the output gear 25 on the other output shaft 20.

[0035] When the loads of the transmission mechanisms of two adjacent chains are different, the rated speeds of the motors will also be different to a certain extent, but the above device strictly constrains the speeds of the output shafts 19 and 20 of the two independent transmission mechanisms to be consistent. And when the transmission mechanisms of the two adjacent chains are relatively displaced, the angles of the inner and outer swing arms 21 and 22 will change accordingly, but the center distance of the transmission chain composed of a series of gears remains unchanged, thereby still strictly constraining the speeds of the output shafts 19 and 20 of the two independent transmission mechanisms to be consistent.

[0036] like Figure 6 As shown, the slips 30, 31 on two transverse adjacent chains of the pipe pulling and bunching machine head are arranged in a staggered manner. This arrangement enables the adjacent chains to be used for clamping a hose or steel strand bundle with a smaller diameter.

[0037] like Figure 7 As shown, the head of the tube pulling and bundling machine described in the present invention includes a transverse moving frame and a longitudinal moving frame. The transverse moving wheel 7 of the transverse moving frame is located on the transverse moving track 8 of the base of the work table, and the longitudinal moving wheel 10 of the longitudinal moving frame is located on the longitudinal moving track 9 of the transverse moving frame. The transverse moving frame is driven by the transverse moving oil cylinder 6, and the longitudinal moving frame is driven by the longitudinal moving oil cylinder 11. During operation, the traveling vehicle body stops at a suitable position, and the lifting gantry 2 drives the work table to rise and fall to a suitable height, so that the head of the tube pulling and bundling machine is basically aligned with the position where the tube pulling and bundling are required, and then the longitudinal moving frame and the transverse moving frame with rollers are pushed by the oil cylinder to further move accurately, so that the head of the tube pulling and bundling machine is accurately aligned, and the wire harness is continuously pushed slowly and accurately into place.

[0038] like Figure 1 , Figure 8 , Fig. 9 As shown, the walking chassis 4 of the walking vehicle body is a concave structure with the area of ​​the middle part accommodating the work surface being sunken relative to the two ends and the wheel axle connection part. This structure allows the head of the pipe pulling and bunching machine to be lowered to a lower position compared to the rectangular chassis in the same plane, thereby expanding the range of bridge heights that the working position of the pipe pulling and bunching machine is applicable to.

[0039] like Fig.10 As shown, a rotation counter 32 is installed on a chain secondary shaft of the tube pulling and bunching machine head. Fig.11 As shown, the rotation counter stator 40 is connected to the upper cover plate 44 of the machine head through the rotation counter fixing bracket 41, so that the rotation counter stator 40 is fixed; the rotation counter mover 42 is bolted to the machine head auxiliary shaft 43, so that the rotation counter mover 42 rotates synchronously with the machine head auxiliary shaft 43, thereby recording the number of rotations of the machine head auxiliary shaft 43. Fig.12As shown, the rotation counter 32 transmits the data of the number of rotations of the secondary shaft to a control unit 39, and the control unit 39 sends a stop signal to the motor of the head chain of the tube pulling and bundling machine according to the data of the number of rotations of the secondary shaft received. The device sets a limit on the number of rotations by converting the push length and the number of rotations. During the bundling process, before the bundling starts, after the steel strand is placed in place, the rotation counter switch 37 is turned on, and then the head power supply 35 is turned on to start bundling. The rotation counter assembly 33 starts to record the number of rotations of the shaft. After reaching the limit number of rotations determined by the bundling length, the rotation counter 32 sends a signal to the control unit 39, and the control unit 39 sends a signal to control the head chain motor switch 34 to disconnect, and the trolley power supply 35 stops supplying power to the head assembly 36, and the head assembly 36 stops working; during the tube pulling process, the rotation counter 37 switch is kept disconnected, and the control unit 39 no longer receives a signal, which means that the rotation counter 32 is invalid, avoiding the impact on the rubber tube pulling.

[0040] like Fig.13 As shown, a laser sensor 46 is installed at the other beam end of the trolley for beam threading, and a wireless sensor receiver 47 is installed on the trolley. The wireless sensor receiver 47 receives the signal sent by the laser sensor 46 and transmits it to a control unit. The control unit sends a stop signal to the motor of the head chain of the tube pulling and beam threading machine according to the received signal. The laser sensor 46 is installed at the other beam end of the trolley for beam threading, which is the anchor 45 at the end where the steel strand passes through. When the laser sensor 46 senses that the steel strand passes through the anchor 45 at the end where the steel strand passes through, it sends a signal to make the wireless sensor transmitter 51 send a signal. The wireless sensor receiver 47 on the trolley transmits a signal to the delay switch 50. After receiving the signal, the delay switch 50 extends a period of time (this time is adjustable) to turn off the main power supply. The extended time is the time required for the steel strand to reach the appropriate position after passing through the beam end. This time is related to the beam threading speed. After the extended time is over, the delay switch 50 disconnects the circuit, and the trolley main power supply 49 cannot supply power to the trolley working head 48, and the beam threading stops.

Claims

1. A bridge prestressed pipe pulling and bundling trolley, comprising a traveling vehicle body, a lifting device and a pipe pulling and bundling machine, characterized in that The walking chassis of the walking vehicle body is a concave structure in which the area in the middle that accommodates the work surface is sunken relative to the two ends and the wheel axle connection part; there is a lifting device at each end of the walking vehicle body, and each row of chains on the horizontal direction of the head of the pipe pulling and bundling machine is composed of two chains connected end to end in the longitudinal direction. The driving cylinders of the lifting devices at both ends are respectively connected to the synchronous cylinders. The synchronous cylinders include a first cylinder barrel, a second cylinder barrel and a middle partition plate located between the two cylinder barrels. The three are combined to form the cylinder barrel of the synchronous cylinder. A piston rod passes through the middle partition plate and can slide freely through the hole of the middle partition plate. The first cylinder barrel and the second cylinder barrel respectively have a first piston and a second piston respectively fixedly connected to the piston rod. The oil inlet pipe of the synchronous cylinder is respectively connected to the oil inlet of the first cylinder barrel and the second cylinder barrel, and the oil outlet of the first cylinder barrel and the second cylinder barrel is respectively connected to the driving cylinders of the lifting devices at both ends; a rotation counter is installed on the secondary shaft of the chain of the head of the pipe pulling and bundling machine, The rotation counter transmits the data of the number of rotations of the secondary shaft to a control unit, and the control unit sends a stop signal to the motor of the chain of the head of the tube pulling and bundling machine according to the data of the number of rotations of the secondary shaft received. The head of the tube pulling and bundling machine includes a transverse moving frame and a longitudinal moving frame. The transverse moving wheel of the transverse moving frame is located on the transverse moving track of the work table base, and the longitudinal moving wheel of the longitudinal moving frame is located on the longitudinal moving track of the transverse moving frame. The transverse moving frame is driven by the transverse moving cylinder, and the longitudinal moving frame is driven by the longitudinal moving cylinder. The output shafts of the transmission mechanism of the two transverse adjacent chains of the head of the tube pulling and bundling machine are respectively equipped with an outer swing arm and an inner swing arm connected by an intermediate shaft. The inner and outer swing arms have transition gears that mesh with the intermediate gears on the intermediate shaft, so that an output shaft forms a complete transmission chain through the gears on the output shaft, the transition gears and the intermediate shaft gears to reach the output gear on the other output shaft, thereby realizing the synchronous rotation of the two output shafts.

2. The bridge prestressed pipe pulling and bundling trolley according to claim 1 is characterized in that The slips on two transversely adjacent chains of the tube pulling and bundling machine head are arranged alternately.

3. The bridge prestressed pipe pulling and bundling trolley according to claim 2 is characterized in that The traveling vehicle body is equipped with an oblique support oil cylinder, one end of which is connected to the upper end of the lifting door frame, and the other end is a free end, and the free end is supported on the ground during operation.

4. The bridge prestressed pipe pulling and bundling trolley according to claim 3 is characterized in that A laser sensor is installed at the other end of the beam of the trolley, and the laser sensor is connected to the wireless sensor transmitter. A wireless sensor receiver is installed on the trolley, and the wireless sensor is connected to the delay switch in the motor power supply circuit of the head chain of the tube pulling and beam threading machine.

Images