Middle pull rod driving device and paver

Abstract

A middle pull rod driving device and a paver relate to the technical field of paving equipment.The middle pull rod driving device comprises a fixing support, the fixing support is obliquely arranged upwards towards the front side, a pull rod grabbing and inserting mechanism arranged in a front-back swinging mode is hinged to the front face of the fixing support, and a pull rod arranging bin is arranged on the fixing support on the rear side of the pull rod grabbing and inserting mechanism; a pull rod falling groove is formed in the front side of the pull rod arrangement bin discharging port and located below the pull rod arrangement bin discharging port. A pull rod placing mechanism is arranged between a discharge port of the pull rod arrangement bin and the pull rod falling groove, the pull rod placing mechanism is used for conveying pull rods at the bottom end of the pull rod arrangement bin into the pull rod falling groove, the pull rod grabbing and inserting mechanism comprises a swing support, and a driving mechanism is installed on the swing support in the vertical direction in a sliding mode. Through cooperation of the concrete slip form paver and the middle pull rod driving device, mechanical construction of the middle pull rod can be achieved, the labor cost is saved, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paving equipment, in particular to a middle pull rod driving device and a paver. BACKGROUND

[0002] The construction of cement concrete pavement requires that longitudinal joints be arranged along the driving direction and a pull rod be arranged at a fixed interval, which prevents the relative transverse displacement of concrete slabs. In the construction process of a concrete slip-form paver, the pull rod in the middle of the construction slab is usually pre-buried by manual construction. However, this manual processing method has a low efficiency and affects the construction progress. SUMMARY

[0003] The present application aims to provide a middle pull rod driving device, which can realize the mechanized construction of the middle pull rod by using an electro-hydraulic control middle pull rod driving device, thereby saving labor costs and improving the construction efficiency.

[0004] The technical solution for achieving the above-mentioned purpose is as follows: a middle pull rod driving device, comprising a fixed support, the fixed support being inclined upward to the front side, a front and rear swing pull rod grabbing and inserting mechanism being hingedly connected to the front side of the fixed support, a pull rod arrangement bin being arranged on the rear side of the fixed support of the pull rod grabbing and inserting mechanism, a row of pull rods being arranged in the pull rod arrangement bin, the lower end of the pull rod arrangement bin being an opening as a discharge port, a pull rod chute being arranged on the front side of the discharge port of the pull rod arrangement bin, the pull rod chute being located below the discharge port of the pull rod arrangement bin. The pull rod chute comprises V-shaped plates symmetrically arranged on the left and right sides, the V-shaped plates being flexible plates, the V-shaped plates comprising front side plates and rear side plates, the bottom ends of the front side plates and the rear side plates being separably attached to form a V-shaped structure. A pull rod placing mechanism is arranged between the discharge port of the pull rod arrangement bin and the pull rod chute, the pull rod placing mechanism being used to transport the pull rod at the bottom end of the pull rod arrangement bin into the pull rod chute, the number of pull rods transported at a time being one. The pull rod grabbing and inserting mechanism comprises a swing support, a driving mechanism being slidably installed on the swing support in the up-down direction, a driving oil cylinder being installed on the swing support to drive the driving mechanism to displace upward and downward, a floating oil cylinder being installed between the fixed support and the pull rod grabbing and inserting mechanism to drive the fixed support to rotate forward and backward around the hinge end, the driving oil cylinder being used to control the driving mechanism to grab the pull rod in the pull rod chute and displace downward to the V-shaped plates and the concrete pavement, the floating oil cylinder being used to switch to a floating state after the driving mechanism grabs the pull rod in the pull rod chute and displaces downward to the V-shaped plates and the concrete pavement, so that the pull rod grabbing and inserting mechanism rotates forward to a vertical state, thereby facilitating the driving oil cylinder to drive the driving mechanism to drive the grabbed pull rod into the concrete pavement.

[0005] Further, the fixing support comprises a square frame with an open lower end, and a connecting frame arranged front-to-back is fixedly connected to the square frame, and a pull rod arrangement bin matching the diameter of the pull rod is formed between the connecting frames, and end baffle plates for limiting the two ends of the pull rod are arranged on both sides of the pull rod arrangement bin and are installed in the square frame.

[0006] Further, the bottom end of each end baffle plate is integrally provided with a forwardly protruding isosceles trapezoidal plate in the same vertical plane as the end baffle plate and having a small end downward, the isosceles trapezoidal plate is arranged along the front-to-back direction and has connecting plates arranged along the left-to-right direction connected to the oblique edges on the front and back sides, respectively, the front and back side plates of the V-shaped plate are connected to the outer sides of the two connecting plates on the same side and protrude downward below the connecting plates, and a gap with a size greater than the diameter of the pull rod is left between the bottom ends of the two connecting plates, so that the pull rod in the pull rod drop chute falls into the angle part at the bottom of the V-shaped plate through the gap between the connecting plates.

[0007] Further, the pull rod placing mechanism comprises a rotating shaft rotatably installed directly below the discharge port of the pull rod arrangement bin, the rotating shaft is rotatably installed in the square frame, the axis of the rotating shaft is in the same plane as the axis of the pull rod, and rotating discs are fixedly arranged at both ends of the rotating shaft, the lowermost pull rod in the pull rod arrangement bin is supported between the two rotating discs, the gap between the top end of the rotating disc and the bottom end of the pull rod arrangement bin is smaller than the diameter of the pull rod, the rotating disc is located between the two connecting plates and the V-shaped plate, and a recess is arranged at the center of the top end of each rotating disc, the recesses between the two rotating discs are used to accommodate a pull rod, and a rotary driving mechanism for driving the rotating shaft to rotate forward is further installed on the direction frame, and the rotary driving mechanism is used to drive the pull rod in the rotating disc to rotate forward into the pull rod drop chute.

[0008] Further, the swing support has a door-shaped structure, and opposite sliding rails are arranged in the swing support, the driving-in mechanism comprises a sliding frame sliding up and down and arranged between the sliding rails, a fixed seat is installed on the front face of the sliding frame, a vibrator is installed on the fixed seat, a row of plug-in plates are installed between the connecting plates and the V-shaped plate at the bottom end of the fixed seat, and an open slot for being sleeved downward on the pull rod is arranged at the middle part of the bottom end of each plug-in plate.

[0009] Further, the rotating driving mechanism comprises a pull rod placing oil cylinder and a connecting rod, the pull rod placing oil cylinder is arranged on one side of the square frame, the tail end of the pull rod placing oil cylinder is upward and is hinged to the outer side wall of the square frame, the telescopic end of the pull rod placing oil cylinder is hinged to one end of the connecting rod, the shaft is extended out of the square frame from the end of the connecting rod close to the pull rod placing oil cylinder, a transfer plate is arranged between the free end of the connecting rod and the extended end of the shaft, the transfer plate is fixedly connected to the end of the connecting rod away from the pull rod placing oil cylinder and the extended end of the shaft respectively, when the pull rod placing oil cylinder is in the retracted state, the grooves on the rotating disc are upward and face the discharge port of the pull rod arrangement bin, when the pull rod placing oil cylinder is in the extended state, the pull rods between the grooves on the rotating disc are driven to rotate 90° forward into the pull rod falling groove.

[0010] Further, the bottom end of the connecting frame of the front side is connected with an arc-shaped baffle extending forward, the arc-shaped baffle is located between the two rotating discs and forms an arc-shaped guide groove with the rotating discs in the radial direction, the outlet of the arc-shaped guide groove faces downward and faces the pull rod falling groove, during the forward rotation of the rotating disc, the pull rods are driven to fall into the pull rod falling groove along the arc-shaped guide groove.

[0011] Further, the front surface of the side wall of the swing support is provided with a first sensing sensor and a second sensing sensor arranged in an up-down manner, a third sensing sensor is arranged on the outer side wall of the square frame, a first sensing part cooperating with the first sensing sensor and the second sensing sensor is arranged on the sliding frame, and a second sensing part cooperating with the third sensing sensor is arranged on the swing support. The first sensing sensor is used to send a sensing signal when the driving plug plate of the driving-in oil cylinder drives the pull rods in the pull rod falling groove to be pushed downward to the space between the V-shaped plate and the concrete road surface or drives the driving-in mechanism to reset upward, the second sensing sensor is used to send a sensing signal when the pull rods at the bottom end of the driving plug plate of the driving-in oil cylinder are inserted downward into the concrete road surface to a set depth, and the third sensing sensor is used to send a sensing signal when the floating oil cylinder is retracted to drive the pull rod grabbing and inserting mechanism to recover to the original position.

[0012] Further, the medium pull rod driving-in device is further provided with an electro-hydraulic control system, the electro-hydraulic control system comprises a controller, a first three-position four-way electromagnetic valve, a second three-position four-way electromagnetic valve, a third three-position four-way electromagnetic valve, a first hydraulic lock, a second hydraulic lock, a first one-way speed regulating valve, a second one-way speed regulating valve, the first sensing sensor, the second sensing sensor and the third sensing sensor are connected to the input end of the controller, and the first three-position four-way electromagnetic valve, the second three-position four-way electromagnetic valve and the third three-position four-way electromagnetic valve are connected to the output end of the controller. The pressure oil port P of the first three-position four-way electromagnetic valve, the second three-position four-way electromagnetic valve and the third three-position four-way electromagnetic valve is connected with a pressure oil pump of a paver hydraulic system, the return oil port T of the first three-position four-way electromagnetic valve, the second three-position four-way electromagnetic valve and the third three-position four-way electromagnetic valve is connected with an oil tank of the paver hydraulic system, the working oil port A of the first three-position four-way electromagnetic valve is connected with an oil inlet P1 of a first hydraulic lock, the working oil port B of the first three-position four-way electromagnetic valve is connected with an oil inlet P2 of the first hydraulic lock, an oil outlet T1 of the first hydraulic lock is connected with an oil inlet of a first one-way speed regulating valve, an oil outlet T2 of a second hydraulic lock is connected with an oil inlet of a second one-way speed regulating valve, an oil outlet of the first one-way speed regulating valve is connected with a rodless cavity of a push-in oil cylinder, an oil outlet of the second one-way speed regulating valve is connected with a rod cavity of the push-in oil cylinder, the working oil port A of the second three-position four-way electromagnetic valve is connected with the rod cavity of a floating oil cylinder, the working oil port B of the second three-position four-way electromagnetic valve is connected with the rodless cavity of the floating oil cylinder, the working oil port A of the third three-position four-way electromagnetic valve is connected with the oil inlet P1 of the second hydraulic lock, the working oil port B of the third three-position four-way electromagnetic valve is connected with the oil inlet P2 of the second hydraulic lock, an oil outlet T1 of the second hydraulic lock is connected with the rodless cavity of a pull rod placing oil cylinder, and an oil outlet T2 of the second hydraulic lock is connected with the rod cavity of the pull rod placing oil cylinder.

[0013] Another object of the present application is to provide a paver, wherein one or more middle pull rod pushing devices are installed on a side beam on one side of a paving direction of the paver, and when a plurality of middle pull rod pushing devices are arranged, the pushing positions of the pull rods of adjacent middle pull rod pushing devices are consistent with the set distance between the pull rods on a construction pavement.

[0014] The one or more electro-hydraulic control middle pull rod pushing devices of the present application are installed on a concrete slip-form paver and work, and the mechanized construction of the middle pull rod can be realized through cooperation of the concrete slip-form paver and the middle pull rod pushing device, thereby saving labor cost and improving construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the present application; Figure 2 It is a side view of the present application; Figure 3 It is a perspective view of the fixed support; Figure 4 It is a perspective view of the pull rod grabbing and inserting mechanism; Figure 5 It is a partial schematic view of the present application; Figure 6 It is a schematic view of the working state of the pull rod grabbing and inserting mechanism; Figure 7 It is a sectional view of the present application; Figure 8 It is a perspective view of the pull rod placing mechanism; Figure 9This is a schematic diagram of the electro-hydraulic control system of the present invention; Figure 10 Structural diagram of a paver with a tie rod driven-in device installed; Figure 11 for Figure 10 Enlarged view of part A in the middle. Detailed Implementation

[0016] like Figures 1-11 As shown, the present invention discloses a pull rod insertion device 30, including a fixed bracket 1, which is inclined upward to the front side with an inclination angle α of 8-15°. A pull rod gripping and insertion mechanism 2, which is swaying back and forth, is hinged to the front of the fixed bracket 1.

[0017] The fixed bracket 1 includes a square frame 1.1 with an opening at the lower end. A connecting seat 1.2 is connected to the square frame 1.1 and is positioned rearward for fixing the centering pull rod insertion device. A connecting frame 1.3 is connected to the square frame 1.1 and is arranged in a front-to-back manner. A pull rod arrangement chamber 1.4 is formed between the connecting frames 1.3, which matches the diameter of the pull rod 3 (i.e., the diameter of the pull rod 3 is the same as the distance between the connecting frames 1.3). A row of pull rods 3 is arranged vertically in the pull rod arrangement chamber 1.4. The bottom end of the pull rod arrangement chamber 1.4 is open as a discharge port. End baffles 1.5 are installed inside the square frame 1.1 on both sides of the pull rod arrangement chamber 1.4 and are used to limit the two ends of the pull rod 3.

[0018] The front side below the discharge port of the pull rod arrangement compartment 1.4 is provided with a pull rod groove 1.13. The pull rod groove 1.13 includes V-shaped plates 1.7 symmetrically arranged on the left and right sides. The V-shaped plates 1.7 are made of flexible plates, specifically, but not limited to, rubber material. The V-shaped plates 1.7 include a front side plate 1.71 and a rear side plate 1.72. The bottom ends of the front side plate 1.71 and the rear side plate 1.72 can be separably attached to form a V-shaped structure.

[0019] The bottom of each end baffle 1.5 is integrally provided with an isosceles trapezoidal plate 1.6 that protrudes forward and is located in the same vertical plane as the end baffle 1.5 with the smaller end facing downward. The isosceles trapezoidal plates 1.6 on both sides are arranged in the front-back direction, and the hypotenuses on the front and back sides are respectively connected to connecting plates 1.10 arranged in the left-right direction. The front side plate 1.71 and the rear side plate 1.72 of the V-shaped plate 1.7 are respectively connected to the outer surfaces of the two connecting plates 1.10 on the same side and protrude downward to the bottom of the connecting plates 1.10. A gap 1.11 larger than the diameter of the tie rod 3 is left between the bottom ends of the two connecting plates 1.10, so that the tie rod 3 entering the tie rod groove 1.13 falls into the bottom angle of the V-shaped plate 1.7 through the gap 1.11 between the connecting plates 1.10.

[0020] Further, the rear connecting plate 1.10 is provided with a bent edge 1.9 bent towards the rear side and fixed to the bottom end of the end plate baffle 1.5, the bent edge 1.9 is located directly below the discharge port of the pull rod arrangement bin 1.4 and has a height lower than that of the discharge port of the pull rod arrangement bin 1.4, and the outer end of the front connecting plate 1.10 is bent 90° to form a vertical bent section 1.12, which is fixed to the outer side wall of the same side of the fixed support 1, thereby improving the connection strength of the connecting plate 1.10.

[0021] A pull rod placing mechanism 4 is arranged between the discharge end of the pull rod arrangement bin 1.4 and the pull rod chute 1.13, which is used to transport one pull rod 3 at a time from the bottom end of the pull rod arrangement bin 1.4 into the pull rod chute 1.13, the pull rod placing mechanism 4 comprises a rotating shaft 4.1 rotatably installed at the discharge port of the pull rod arrangement bin 1.4, the rotating shaft 4.1 is rotatably installed in the square frame 1.1 through a bearing and located below the bent edge 1.9, the axis of the rotating shaft 4.1 is in the same plane as the axis of the pull rod 3 in the pull rod arrangement bin 1.4, and the two ends of the rotating shaft 4.1 are respectively fixedly provided with a rotating disc 4.2, the top end of the rotating disc 4.2 protrudes above the bent edge 1.9 and has a gap a with the bottom end of the pull rod arrangement bin 1.4 smaller than the diameter of the pull rod 3, and the lowermost pull rod 3 in the pull rod arrangement bin 1.4 is supported on the two rotating discs 4.2.

[0022] The rotating discs 4.2 are located between the two connecting plates 1.10 and the V-shaped plate 1.7, the top center of each rotating disc 4.2 is provided with a groove 4.3, and the two grooves 4.3 of the two rotating discs 4.2 can accommodate one pull rod 3, preferably, the groove 4.3 is a circular arc groove with a diameter larger than that of the pull rod 3, and the depth of the groove 4.3 is consistent with or slightly larger than the diameter of the pull rod 3. A rotary driving mechanism 5 is further installed on the square frame 1.1 to drive the rotating shaft 4.1 to rotate forward, which is used to drive the pull rod 3 in the rotating disc 4.2 to rotate forward by 90° and fall into the pull rod chute 1.13.

[0023] The bottom end of the front connecting frame 1.3 is connected with a forwardly extending arc-shaped baffle 1.31, an arc-shaped guide groove 16 is formed between the arc-shaped baffle 1.31 and the rotating disc 4.2 in the radial direction, the outlet of the arc-shaped guide groove 16 downwardly faces the pull rod chute 1.13, and the rotating disc drives the pull rod 3 to fall into the pull rod chute 1.13 along the arc-shaped guide groove 16 during the forward rotation, further, the spacing of the discharge side of the arc-shaped guide groove 16 needs to be larger than the diameter of the pull rod 3 to ensure that the pull rod 3 can smoothly fall into the pull rod chute 1.13.

[0024] The rotating driving mechanism 5 comprises a pull rod placing oil cylinder 5.1 and a connecting rod 5.2. The pull rod placing oil cylinder 5.1 is arranged on one side of the square frame 1.1, the tail end of the pull rod placing oil cylinder 5.1 is upward and is hinged to the outer side wall of the square frame 1.1, the telescopic end of the pull rod placing oil cylinder 5.1 is hinged to one end of the connecting rod 5.2, the rotating shaft 4.1 is arranged on the square frame 1.1 through one end of the pull rod placing oil cylinder 5.1, the free end of the connecting rod 5.2 and the extending end of the rotating shaft 4.1 are provided with a rotating plate 5.3, the rotating plate 5.3 is fixedly connected to the free end of the connecting rod 5.2 and the extending end of the rotating shaft 4.1 respectively, when the pull rod placing oil cylinder 5.1 is in the retracted state, the grooves 4.3 on the rotating disc 4.2 are upward and face the pull rod 3 of the pull rod arrangement bin 1.4, at this time, the lowermost pull rod 3 falls between the grooves 4.3 on the rotating disc 4.2, when the pull rod placing oil cylinder 5.1 is in the extended state, the pull rod 3 between the grooves 4.3 on the rotating disc is driven to rotate 90° forward into the pull rod falling groove 1.13.

[0025] The pull rod grabbing and inserting mechanism 2 comprises a swing support 2.1, a driving mechanism 2.2 is slidably arranged on the swing support 2.1 in the up-down direction, the upper end of the swing support 2.1 is hinged to the fixed support 1, the swing support 2.1 is a door-shaped structure, the swing support 2.1 is provided with oppositely arranged slide rails 2.9, the driving mechanism 2.2 comprises a sliding frame 2.21 which is slidably arranged between the slide rails 2.9, the front surface of the sliding frame 2.21 is provided with a fixed seat 2.22, the fixed seat 2.22 is provided with a vibrator 2.25, the bottom end of the fixed seat 2.22 is provided with a row of inserting plates 2.23, the inserting plates 2.23 are located between the connecting plates 1.10 and the V-shaped plates 1.7, the bottom end of the inserting plates 2.23 is provided with an opening slot 2.24 for accommodating the pull rod 3, the opening slot 2.24 is a V-shaped slot with a larger outer diameter than the diameter of the pull rod 3, and the opening slot 2.24 corresponds to the pull rod 3 in the pull rod falling groove 1.13 in the up-down position, so that the opening slot 2.24 at the bottom end of the inserting plate 2.23 can be radially sleeved on the pull rod 3 during the downward movement of the inserting plate 2.23.

[0026] The swing support 2.1 is provided with a driving mechanism 2.2 which drives the driving mechanism 2.2 to move up and down, the tail end of the driving mechanism 2.2 is upward and is hinged to the top end of the square frame 1.1, the telescopic end of the driving mechanism 2.2 is hinged to the sliding frame 2.21, the fixed support 1 and the middle part of the pull rod grabbing and inserting mechanism 2 are hinged to a floating oil cylinder 6, the tail end of the floating oil cylinder 6 is backward and is hinged to the connecting seat 1.2 on the fixed support 1, the front end is fixedly connected to the fixed seat 7 on the pull rod grabbing and inserting mechanism 2.

[0027] The side wall of the swing support 2.1 is provided with a first sensing sensor 11 and a second sensing sensor 12 arranged vertically on the front side, and a third sensing sensor 14 is arranged on the outer side wall of the square frame 1.1. The first sensing sensor 11 and the second sensing sensor 12 and the third sensing sensor 14 are specifically proximity switches, a first sensing part 13 is arranged on the sliding support 2.21 to cooperate with the first sensing sensor 11 and the second sensing sensor 12, and a second sensing part 15 is arranged on the swing support 2.1 to cooperate with the third sensing sensor 14.

[0028] The first sensing sensor 11 is used to send a sensing signal when the punch cylinder 2.3 drives the plug plate 2.23 to push the drawbar 3 in the drawbar chute 1.13 downward to the position between the V-shaped plate 1.7 and the concrete pavement or drives the punch mechanism 2.2 to reset upward, the second sensing sensor 12 is used to send a sensing signal when the bottom end of the drawbar 3 of the punch cylinder 2.3 drives the plug plate 2.23 to insert into the concrete pavement to a set depth, and the third sensing sensor 14 is used to send a sensing signal when the floating cylinder 6 retracts to drive the drawbar grabbing and inserting mechanism to return to the original position.

[0029] The medium drawbar punch device is also provided with an electro-hydraulic control system, which includes a controller 17, a first three-position four-way electromagnetic valve 18, a second three-position four-way electromagnetic valve 19, a third three-position four-way electromagnetic valve 20, a first hydraulic lock 21, a second hydraulic lock 22, a first one-way speed regulating valve 23, a second one-way speed regulating valve 24, the first sensing sensor 11, the second sensing sensor 12, and the third sensing sensor 14 are connected to the input end of the controller 17, the first three-position four-way electromagnetic valve 18, the second three-position four-way electromagnetic valve 19, and the third three-position four-way electromagnetic valve 20 are connected to the output end of the controller 17, and the controller 17 can but not limited to adopt a PLC controller.

[0030] The pressure oil port P of the first three-position four-way electromagnetic valve 18, the second three-position four-way electromagnetic valve 19 and the third three-position four-way electromagnetic valve 20 is connected with a pressure oil pump of a paving machine hydraulic system (a driving device is installed on the paving machine for use), the return oil port T of the first three-position four-way electromagnetic valve 18, the second three-position four-way electromagnetic valve 19 and the third three-position four-way electromagnetic valve 20 is connected with an oil tank of the paving machine hydraulic system, the working oil port A of the first three-position four-way electromagnetic valve 18 is connected with the oil inlet P1 of the first hydraulic lock 21, the working oil port B of the first three-position four-way electromagnetic valve 18 is connected with the oil inlet P2 of the first hydraulic lock 21, the oil outlet T1 of the first hydraulic lock 21 is connected with the oil inlet of the first one-way speed regulating valve 23, the oil outlet T2 of the second hydraulic lock 22 is connected with the oil inlet of the second one-way speed regulating valve 24, the oil outlet of the first one-way speed regulating valve 23 is connected with the rodless cavity of the driving cylinder, the oil outlet of the second one-way speed regulating valve 24 is connected with the rod cavity of the driving cylinder 2.3, the working oil port A of the second three-position four-way electromagnetic valve 19 is connected with the rod cavity of the floating cylinder 6, the working oil port B of the second three-position four-way electromagnetic valve 19 is connected with the rodless cavity of the floating cylinder 6, the working oil port A of the third three-position four-way electromagnetic valve 20 is connected with the oil inlet P1 of the second hydraulic lock 22, the working oil port B of the third three-position four-way electromagnetic valve 20 is connected with the oil inlet P2 of the second hydraulic lock 22, the oil outlet T1 of the second hydraulic lock 22 is connected with the rodless cavity of the pull rod placing cylinder 5.1, and the oil outlet T2 of the second hydraulic lock 22 is connected with the rod cavity of the pull rod placing cylinder 5.1.

[0031] The first hydraulic lock 21 (locking the driving cylinder 2.3 in the power-off state), the second hydraulic lock 22 (locking the pull rod placing cylinder in the power-off state), the first one-way speed regulating valve 23 is used for driving speed (piston rod extension speed) adjustment of the driving cylinder 2.3, and the second one-way speed regulating valve 24 is used for reset speed (piston rod retraction speed) adjustment of the driving cylinder 2.3.

[0032] As shown in Figure 9 , 10 When the present application is used, the connecting seat 1.2 is installed on the side beam 9 on one side of the paving direction of the paving machine 10, the upper part of the connecting seat 1.2 is L-shaped and is clamped on the side beam 9 of the paving machine 10 upwards, the side part of the connecting seat 1.2 is fixed with a mounting plate 1.21 which is attached to the outer end surface and the bottom end surface of the side beam 9 of the paving machine, and the mounting plate 1.21 is fixed with the side beam 9 through bolts.

[0033] Working process of the present application: Pull rod driving action logic: Initial state: the floating cylinder 6 is locked in the power-off state, the driving cylinder 2.3 is locked in the power-off state, and the pull rod placing cylinder 5.1 is locked in the power-off state, at this time, one of the pull rods 3 in the pull rod groove 1.13 is driven and input by the pull rod placing cylinder 5.1.

[0034] Send a signal to the controller 17 (the controller 17 of the middle pull rod driving device is connected in communication with the main controller of the slip form machine, and the main controller of the slip form machine sends a signal to the controller 17 of the middle pull rod driving device), and the paving distance can be set to automatically send the driving signal, or the driving signal can be manually controlled.

[0035] Pull rod driving action: the lower electromagnetic valve of the first three-position four-way electromagnetic valve 18 is powered, the opening slot 2.24 of the plug plate 2.23 driven by the driving cylinder 2.3 is sleeved on the pull rod 3 in the pull rod falling groove 1.13, and the pull rod 3 is driven to pass through the V-shaped plate 1.7 downward to above the concrete pavement, at this time, the first sensing element 13 triggers the first sensing sensor 11 (at this time, the pull rod has not been inserted into the concrete), the controller 17 controls the floating cylinder 6 to be powered and floated (that is, the AB port of the second three-position four-way electromagnetic valve 19 is connected with the T port at the same time, and the oil cylinder is in a free state, and the floating cylinder 6 can be extended and retracted under external force), and the vibrator 2.25 is started at the same time.

[0036] After the floating cylinder 6 is in the floating state, the pull rod grabbing and inserting mechanism 2 rotates forward to the vertical state under the action of gravity, and drives the pull rod 3 to move forward synchronously, after the pull rod grabbing and inserting mechanism 2 rotates to the vertical state, under the cooperation of the vibrator 2.25, the driving cylinder 2.3 drives the pull rod 3 to be inserted into the concrete pavement to a set depth, the first sensing element 13 triggers the second sensing sensor 12, the upper electromagnetic valve of the first three-position four-way electromagnetic valve 18 is powered, the driving cylinder 2.3 is lifted, the vibrator 2.25 stops working, the first sensing element 13 triggers the first sensing sensor 11, the driving cylinder 2.3 continues to lift, the upper electromagnetic valve of the second three-position four-way electromagnetic valve 19 is powered, and the floating cylinder 6 is retracted and reset.

[0037] After the floating cylinder 6 is retracted and reset, the second sensing element 15 triggers the third sensing sensor 14, the floating cylinder 6 and the driving cylinder 2.3 are powered off and locked, the lower electromagnetic valve of the third three-position four-way electromagnetic valve 20 is powered, the pull rod placing cylinder 5.1 drives the rotating shaft to rotate 90° through the connecting rod, and one pull rod is input into the pull rod falling groove 1.13, and then the placing cylinder 5.1 drives the rotating shaft to rotate backward to reset and is powered off and locked.

Claims

1. A tie rod insertion device, comprising a fixed bracket, the fixed bracket being inclined upwards to the front side, a tie rod gripping and insertion mechanism hinged to the front of the fixed bracket and swinging back and forth, a tie rod arrangement compartment being provided on the fixed bracket at the rear side of the tie rod gripping and insertion mechanism, a row of tie rods being arranged in the tie rod arrangement compartment, the lower end of the tie rod arrangement compartment being an opening serving as a discharge port, a tie rod drop groove being provided on the front side of the discharge port of the tie rod arrangement compartment, the tie rod drop groove being located below the discharge port of the tie rod arrangement compartment; The tie rod groove includes V-shaped plates symmetrically arranged on the left and right sides. The V-shaped plates are made of flexible plates and include a front plate and a rear plate. The bottom ends of the front plate and the rear plate can be separably attached to form a V-shaped structure. A pull rod placement mechanism is provided between the discharge port of the pull rod arrangement bin and the pull rod drop groove. The pull rod placement mechanism is used to transport the pull rods at the bottom of the pull rod arrangement bin to the pull rod drop groove, and the quantity transported each time is one rod. The pull rod gripping and insertion mechanism includes a swing bracket, on which a driving mechanism is slidably mounted in the vertical direction. A driving cylinder is mounted on the swing bracket to drive the driving mechanism to move up and down. A floating cylinder is hinged between the fixed bracket and the pull rod gripping and insertion mechanism. The driving cylinder controls the driving mechanism to be sleeved downwards onto the pull rod in the pull rod slot and drives the pull rod in the slot to move downwards between the V-shaped plate and the concrete pavement. The floating cylinder is used to switch to a floating state after the driving mechanism pushes the pull rod in the slot between the V-shaped plate and the concrete pavement, so that the pull rod gripping and insertion mechanism rotates forward to a vertical state. During the forward rotation of the pull rod gripping and insertion mechanism, the pull rod rotates forward synchronously. The driving cylinder is also used to drive the driving mechanism to drive the sleeved pull rod into the concrete pavement when the pull rod gripping and insertion mechanism rotates to a vertical state.

2. The tie rod driving device according to claim 1, characterized in that: The fixed bracket includes a square frame with an opening at the lower end. Connecting frames arranged in a front-to-back pattern are fixedly connected to the square frame. A pull rod arrangement compartment matching the diameter of the pull rod is formed between the connecting frames. End baffles installed inside the square frame and used to limit the two ends of the pull rod are provided on both sides of the pull rod arrangement compartment.

3. The tie rod driving device according to claim 2, characterized in that: The bottom of each end baffle is integrally provided with an isosceles trapezoidal plate that protrudes forward and is located in the same vertical plane as the end baffle, with the smaller end facing downward. The two isosceles trapezoidal plates are arranged in the front-back direction, and the hypotenuses of the front and back sides are respectively connected to connecting plates arranged in the left-right direction. The front and rear side plates of the V-shaped plate are respectively connected to the outer surfaces of the two connecting plates on the same side and protrude downward to the bottom of the connecting plates. A gap larger than the diameter of the tie rod is left between the bottom ends of the two connecting plates, so that the tie rod entering the tie rod groove falls into the bottom angle of the V-shaped plate through the gap between the connecting plates.

4. The tie rod driving device according to claim 3, characterized in that: The pull rod placement mechanism includes a rotating shaft rotatably installed directly below the discharge port of the pull rod placement compartment. The rotating shaft is rotatably installed within a square frame. The axis of the rotating shaft and the axis of the pull rod are in the same plane, and turntables are fixedly installed at both ends. The lowest pull rod in the pull rod placement compartment is supported between the turntables on both sides. The gap between the top of the turntable and the bottom of the pull rod placement compartment is smaller than the diameter of the pull rod. The turntable is located between the connecting plates and V-shaped plates on both sides. A groove is provided at the center of the top of the turntable on both sides. The groove between the turntables on both sides is used to accommodate a pull rod. A rotary drive mechanism is also installed on the directional frame to drive the rotating shaft to rotate forward. The rotary drive mechanism is used to drive the pull rod in the turntable to rotate forward into the pull rod groove.

5. The tie rod driving device according to claim 3, characterized in that: The swing bracket is a portal frame structure. Inside the swing bracket, there are slide rails arranged opposite each other. The driving mechanism includes a sliding frame that slides up and down between the slide rails. A fixed seat is installed on the front of the sliding frame. A vibrator is installed on the fixed seat. A row of insert plates located between the connecting plate and the V-shaped plate is installed at the bottom of the fixed seat. The bottom center of the insert plate is provided with an opening groove for being fitted downward onto the pull rod. When the floating cylinder is in the retracted state, the opening groove at the bottom of the insert plate corresponds to the vertical position of the pull rod in the pull rod groove below.

6. The tie rod driving device according to claim 2, characterized in that: The rotary drive mechanism includes a tie rod placement cylinder and a connecting rod. The tie rod placement cylinder is located on one side of the square frame, with its tail end facing upwards and hinged to the outer wall of the square frame. The telescopic end of the tie rod placement cylinder is hinged to one end of the connecting rod. The end of the rotating shaft near the tie rod placement cylinder extends out of the square frame. A transition plate is provided between the free end of the connecting rod and the extended end of the rotating shaft. The transition plate is fixedly connected to the end of the connecting rod away from the tie rod placement cylinder and the extended end of the rotating shaft, respectively. When the tie rod placement cylinder is in the retracted state, the groove on the turntable faces upwards and is directly opposite the discharge port of the tie rod arrangement chamber. When the tie rod placement cylinder is in the extended state, it drives the tie rod between the grooves on the turntable to rotate forward 90° and enter the tie rod dropping groove.

7. The tie rod driving device according to claim 6, characterized in that: The bottom of the front connecting frame is connected to a forward-extending arc-shaped baffle. The arc-shaped baffle is located between the two turntables and forms an arc-shaped guide groove in the radial direction with the turntables. The outlet of the arc-shaped guide groove faces downward and is directly opposite the pull rod slot. As the turntable rotates forward, it drives the pull rod to fall into the pull rod slot along the arc-shaped guide groove.

8. The tie rod driving device according to claim 7, characterized in that: The first and second sensing sensors are installed vertically on the front side wall of one side of the swing bracket. A third sensing sensor is installed on the outer side wall of the square frame. A first sensing element that cooperates with the first and second sensing sensors is installed on the sliding frame. A second sensing element that cooperates with the third sensing sensor is installed on the swing bracket. The first sensor is used to send a sensing signal when the driving plate of the injection cylinder pushes the pull rod into the groove downward to between the V-shaped plate and the concrete road surface, or when the driving injection mechanism is reset upward. The second sensor is used to send a sensing signal when the pull rod at the bottom of the driving plate of the injection cylinder is inserted downward into the concrete road surface to a set depth. The third sensor is used to send a sensing signal when the floating cylinder retracts and drives the pull rod gripping and insertion mechanism to return to its original position.

9. A tie rod driving device according to claim 8, characterized in that: The middle tie rod insertion device is also equipped with an electro-hydraulic control system, which includes a controller, a first three-position four-way solenoid valve, a second three-position four-way solenoid valve, a third three-position four-way solenoid valve, a first hydraulic lock, a second hydraulic lock, a first one-way speed regulating valve, a second one-way speed regulating valve, a first sensing sensor, a second sensing sensor, and a third sensing sensor connected to the input terminal of the controller, and the first three-position four-way solenoid valve, the second three-position four-way solenoid valve, and the third three-position four-way solenoid valve connected to the output terminal of the controller. The pressure ports P of the first, second, and third three-way four-way solenoid valves are connected to the pressure pump of the paver's hydraulic system. The return ports T of the first, second, and third three-way four-way solenoid valves are connected to the oil tank of the paver's hydraulic system. The working port A of the first three-way four-way solenoid valve is connected to the inlet P1 of the first hydraulic lock, and the working port B of the first three-way four-way solenoid valve is connected to the inlet P2 of the first hydraulic lock. The outlet T1 of the first hydraulic lock is connected to the inlet of the first one-way speed control valve, and the outlet T2 of the second hydraulic lock is connected to the inlet of the second one-way speed control valve. The outlet of the first one-way speed control valve is connected to the rodless chamber of the cylinder, and the outlet of the second one-way speed control valve is connected to the rod chamber of the cylinder. The working port A of the second three-position four-way solenoid valve is connected to the rod chamber of the floating cylinder, and the working port B of the second three-position four-way solenoid valve is connected to the rodless chamber of the floating cylinder. The working port A of the third three-position four-way solenoid valve is connected to the inlet P1 of the second hydraulic lock, and the working port B of the third three-position four-way solenoid valve is connected to the inlet P2 of the second hydraulic lock. The outlet T1 of the second hydraulic lock is connected to the rodless chamber of the lever placement cylinder, and the outlet T2 of the second hydraulic lock is connected to the rod chamber of the lever placement cylinder.

10. A paver, characterized in that: One or more center tie rod driving devices as described in any one of claims 1-9 are installed on the side crossbeam on one side of the paving direction of the paver. When multiple center tie rod driving devices are installed, the tie rod driving position of adjacent center tie rod driving devices is consistent with the set spacing between the tie rods on the construction road surface.

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