Tire type tubular pile loading and unloading machine

Abstract

The utility model relates to the technical field of pipe pile loading and unloading, in particular to a rubber-tyred pipe pile loading and unloading machine, which realizes the movable positioning of a steel pipe gripping apparatus in the vertical direction, the horizontal direction and the circumferential direction through the matching of a big arm, a small arm and a slewing mechanism of a whole crane. And meanwhile, the crane can be flexibly transferred, the loading requirements at different positions can be met, a hydraulic oil cylinder is adopted for supporting, enough power is provided for the movement of the small arm, the small arm adopts a gooseneck type movable arm, so that the steel pipe gripping apparatus is always kept in a vertical state and grips and transfers materials, and the requirements of operation, balanced stress and torsion resistance under the condition that the visual field of a driver is relatively poor can be met. The grabbing distance is measured and adjusted in real time through the distance measuring sensor, one or more steel pipes can be hoisted at the same time, hoisting is stable, and the transferring efficiency is high. The slewing mechanism drives the steel pipe gripping apparatus to freely rotate in the horizontal direction, the parallelism degree of the steel pipe gripping apparatus and a to-be-gripped steel pipe is continuously adjusted, and accurate positioning and efficient gripping are achieved. And the suspension arm connecting piece keeps the stability and horizontal transfer of the steel pipe gripping apparatus in the no-load and loading states.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe pile loading and unloading, in particular to a tire type pipe pile loading and unloading machine. Background Art

[0002] When steel pipes and cast pipes are loaded at the front of the wharf for loading, they are usually hoisted by gantry cranes, and flatbed transport vehicles pull the steel pipes and cast pipes to the front of the wharf. The high-rise hooks require workers to lay anti-fall mats around them and then climb ladders to remove the hooks. The operation process is complicated, the preparation time is long, and there are safety hazards for people to climb high. It is even more impossible to operate in slippery weather. At the same time, the gantry crane cannot be moved, and the hoisting position cannot be adjusted at any time.

[0003] Moreover, some steel pipes are long and heavy, and they may slip and rotate in the circumference during the lifting process, causing great safety hazards and economic losses. Only one steel pipe or cast pipe can be lifted at a time. During the lifting process, the steel pipe or cast pipe being lifted will shake and spin when lifted by conventional lifting hooks, and the lifting rope will become entangled, affecting normal use. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a tire type pipe pile loader and unloader which has balanced force, safe and efficient hoisting and can hoist several steel pipes with the same length at the same time, in view of the deficiencies in the prior art.

[0005] The technical problem to be solved by the utility model is achieved through the following technical scheme: a tire-type pipe pile loader and unloader, comprising a crane, the crane comprising a frame, a chassis under the frame, a cab on the frame, a turntable between the chassis and the cab, a rotating mechanism in the turntable, an integral boom and hydraulic cylinders on both sides of the integral boom are also provided on the frame, a small arm is hinged at the free end of the integral boom, the middle part of the hydraulic cylinder is hinged to the middle part of the integral boom, the end of the hydraulic cylinder is hinged to the tail end of the small arm, and a steel pipe gripper is provided at the head end of the small arm; the integral boom (movable arm) adopts a straight movable arm form and is supported by a hydraulic cylinder to provide sufficient power for the movement of the small arm and drive the free rotation of the small arm.

[0006] The steel pipe gripper includes an outer cover cylinder arranged horizontally. A transition seat is provided in the middle of the outer cover cylinder. A slewing mechanism for driving the fixed cross beam to rotate circumferentially is provided between the head end of the small arm and the transition seat. A partition plate is arranged vertically on the outer cover cylinder to form a first sliding cavity and a second sliding cavity. A driving cross beam is arranged in the first sliding cavity, and a driven cross beam is arranged in the second sliding cavity. A sliding socket mechanism is arranged between the driving cross beam and the driven cross beam. The driving cross beam and the driven cross beam partially overlap, and the driving cross beam and the driven cross beam slide out or retract synchronously along both ends of the outer cover cylinder of the outer cover cylinder through the sliding socket mechanism to adjust the overall length of the spreader. Hook assemblies are provided at the telescopic ends of the driving cross beam and the driven cross beam, and a distance measuring sensor is provided on the hook assembly at one end. Through the cooperation of the overall boom, small arm and slewing mechanism, the steel pipe gripper realizes the movement and positioning in the vertical direction, horizontal direction and circumferential direction. At the same time, the crane can be flexibly transferred to meet the loading requirements at different positions.

[0007] As a further solution of the present invention, the hook assembly includes hook cross bars respectively vertically arranged at the telescopic ends of the driving cross beam and the driven cross beam. The hook cross bars are rod bodies with an inverted T-shaped cross section. A plurality of hook seats are evenly arranged on the rod bodies. T-shaped grooves are opened in the hook seats, and the hook seats are hooked on the hook cross bars through the T-shaped grooves. The hook seats on both sides correspond one by one. Hooks are hinged to the hook seats, and the distance measuring sensor is arranged inside one of the hook seats. The hook assembly can hoist one or more steel pipes at the same time, with stable hoisting and high transfer efficiency.

[0008] As a further solution of the present invention, the hook includes a upper horizontal plate and a vertical hook plate arranged perpendicular to each other. A horizontal hook plate perpendicular to the vertical hook plate is provided at the lower end of the vertical hook plate. The horizontal hook plate is longer than the upper horizontal plate. A partition groove is arranged in the middle of the horizontal hook plate, and the partition groove divides the horizontal hook plate into two symmetrically arranged narrow horizontal hooks.

[0009] As a further solution of the present invention, the hook includes a upper horizontal plate. An electric driving arm is obliquely arranged at one end of the upper horizontal plate. A hook claw is hinged to the output end of the electric driving arm. The hook claw is a hollow triangular body. The front end of the hook claw is set as a groove-shaped bayonet. The head of the hook claw is located on one of the triangular sides, and the tail of the hook claw is located at the vertices of the other two triangular sides. A connecting section is formed by smooth transition at the vertex, and a bolt hole perpendicular to the connecting section is arranged on the connecting section. A universal bolt is arranged in the bolt hole. The head of the universal bolt is fastened by a nut, and the tail of the universal bolt is hinged to the output end of the electric driving arm.

[0010] As a further solution of the present invention, the sliding socket mechanism includes a first horizontal pulley provided at the free end of the driving cross beam. A first slider is arranged between the overlapping end of the driving cross beam and the first sliding cavity. The first slider is fixedly arranged with the first sliding cavity. A second horizontal pulley is provided at the free end of the driven cross beam. A second slider is arranged between the overlapping end of the driven cross beam and the second sliding cavity. The second slider is fixedly arranged with the second sliding cavity;

[0011] A traction rope is wound around the first slider, the first horizontal pulley and the second slider in sequence, and a retraction traction rope is wound around the second slider, the second horizontal pulley and the first slider in sequence. A horizontal oil cylinder is arranged between the active crossbeam and the passive crossbeam. The cylinder body of the horizontal oil cylinder is fixedly connected to the passive crossbeam, and the end of the telescopic shaft of the horizontal oil cylinder is fixedly arranged on the active crossbeam. The sliding socket mechanism enables the active crossbeam and the passive crossbeam to move towards each other or separate from each other at the same rate simultaneously, ensuring synchronous hoisting from both ends of the steel pipe. Only one horizontal oil cylinder is required as the power source, which reduces the weight of the steel pipe gripper and saves energy at the same time.

[0012] As a further solution of the present utility model, horizontal pin holes are symmetrically arranged along both sides of the bottom of the transition seat. The transition seat is connected to the top surface of the outer cover cylinder through the horizontal pin holes by pins. A circle of countersunk screw holes is arranged at the top of the transition seat, and a central joint hole is arranged at the center of the transition seat. The transition seat strengthens the outer cover cylinder and is simultaneously connected to the pin shaft of the slewing mechanism, which is convenient for disassembly, assembly and replacement, and is stably and reliably connected during the transportation process.

[0013] As a further solution of the present utility model, the slewing mechanism includes a slewing body. A central slewing joint is arranged along the central axis of the slewing body. The central slewing joint is screwed into the central joint hole of the transition seat. A slewing support ring is arranged at the lower part of the slewing body. A vertically downward rolling bearing is arranged between the slewing support ring and the outer ring of the slewing body. A circle of bolt holes corresponding to the countersunk screw holes is arranged at the bottom of the slewing support ring, and bolts are sequentially screwed into the bolt holes and threadedly engaged with the countersunk screw holes;

[0014] Slewing motors are symmetrically arranged on both sides of the central slewing joint of the slewing body. A buffer valve is arranged on the slewing motor. The output shaft end of the slewing motor is connected to the slewing body through a slewing bearing. The slewing mechanism provides power through two slewing motors, driving the steel pipe gripper to freely rotate in the horizontal direction, continuously adjusting the parallelism with the steel pipe to be grabbed, and realizing accurate positioning and efficient grabbing.

[0015] As a further solution of the present utility model, two vertical and parallel connecting plates are arranged at the top of the slewing body. First pin holes are symmetrically arranged on the two connecting plates. A boom connecting piece is arranged between the two connecting plates. The boom connecting piece includes an upper hinge ear plate and a lower hinge ring plate;

[0016] Second pin holes corresponding to the first pin holes are arranged on the lower hinge ring plate. The lower hinge ring plate is arranged between the two connecting plates, and a connecting pin shaft is arranged in the first pin holes and the second pin holes;

[0017] The upper hinge ear plate includes a first hinge ear plate and a second hinge ear plate which are arranged in parallel. The head end of the small arm is arranged between the first hinge ear plate and the second hinge ear plate and is hinged through a hinge shaft. The boom connecting piece stably and reliably connects the steel pipe gripper and the small arm, and can effectively maintain the stability of the steel pipe gripper in the no-load and loading states and the effect of horizontal transfer.

[0018] As a further scheme of the utility model, the overall boom adopts a straight boom, and the small arm adopts a gooseneck boom. The inner side of the gooseneck boom is bent at an obtuse angle, and the obtuse angle is between 135° and 165°. The gooseneck boom is convenient for the steel pipe gripper to always maintain a vertical state, grab and transfer materials, and can meet the operation conditions with poor driver vision, with balanced force and anti-torsion.

[0019] The crane drives the steel pipe gripper to translate in the horizontal and vertical directions to the hoisting position through the slewing mechanism and the cooperation of the small arm and the boom. The rotary drive outer cover cylinder of the slewing mechanism rotates to be parallel to the steel pipe and is located directly above the steel pipe;

[0020] The sliding socket mechanism is started, and the driving main beam and the driven main beam are driven to slide out synchronously until the distance between the two end hooks is greater than the length of the steel pipe. The small arm of the crane drives the whole steel pipe gripper to move downwards, and the steel pipe to be lifted and transferred is placed between the two corresponding hooks;

[0021] The sliding socket mechanism is started again, and the driving main beam and the driven main beam are driven to retract synchronously. The distance measuring sensor detects the distance between the two hooks in real time, and the two hooks approach continuously to clamp the steel pipe;

[0022] After the two hooks clamp the steel pipe stably, the crane hoists the steel pipe upwards through the slewing mechanism and the cooperation of the small arm and the boom, and transfers the steel pipe to the designated position;

[0023] When the steel pipe is placed at the designated position, the sliding socket mechanism is started, and the driving main beam and the driven main beam are driven to slide out synchronously until the distance between the two end hooks is greater than the length of the steel pipe, the hooks are separated from the steel pipe, and the steel pipe gripper returns to the initial state.

[0024] The beneficial effects of the utility model are as follows: A tyre-type pipe pile loader and unloader provided by the utility model realizes the movement and positioning of the steel pipe gripper in the vertical direction, horizontal direction and circumferential direction through the cooperation of the overall boom, small arm and slewing mechanism of the crane. At the same time, the crane can be flexibly transferred to meet the loading requirements at different positions. The end of the hydraulic cylinder is hinged to the tail end of the small arm, and the head end of the small arm is provided with a steel pipe gripper; the overall boom (boom) adopts a straight boom form and is supported by a hydraulic cylinder to provide sufficient power for the movement of the small arm and drive the free rotation of the small arm. The small arm adopts a gooseneck boom, which is convenient for the steel pipe gripper to always maintain a vertical state, grab and transfer materials, and can meet the operation conditions with poor driver vision, with balanced force and anti-torsion.

[0025] The real-time grasping distance is measured by a ranging sensor, and the distance between the two hook seats is adjusted in real time. The hook assembly can hoist one or more steel pipes at the same time, with stable hoisting and high transfer efficiency. The sliding socket mechanism enables the active crossbeam and the passive crossbeam to move towards or away from each other at the same rate simultaneously, ensuring synchronous hoisting from both ends of the steel pipe. Only one horizontal oil cylinder is required as the power source, which reduces the weight of the steel pipe gripper and saves energy at the same time.

[0026] The cross-hook plate of one type of hook is divided into two symmetrically arranged narrow cross-hooks. During hoisting, the narrow cross-hooks will move closer to each other and retract under force, with a large frictional force on the contact surface and uniform and stable hoisting force. For another type of hook, the electric drive arm drives the hook claw to rotate to adjust the grasping angle and grasp steel pipes of different shapes, with good fastening force.

[0027] The transition seat strengthens the outer cover cylinder and is connected to the pin shaft of the slewing mechanism at the same time, which is convenient for disassembly, installation and replacement, and is stable and reliable during transportation.

[0028] The slewing mechanism is powered by two slewing motors, driving the steel pipe gripper to freely rotate in the horizontal direction, continuously adjusting the parallelism with the steel pipe to be grasped, and achieving precise positioning and efficient grasping.

[0029] The steel pipe gripper and the forearm are stably and reliably connected through the boom connecting piece, and can effectively maintain the stability of the steel pipe gripper in the no-load and loaded states and the effect of horizontal transfer. Description of the Drawings

[0030] Figure 1 is the overall assembly of the present utility model Figure 1 ;

[0031] Figure 2 is the overall assembly of the present utility model Figure 2 ;

[0032] Figure 3 is the front view of the steel pipe gripper of the present utility model;

[0033] Figure 4 is the top view of the steel pipe gripper of the present utility model;

[0034] Figure 5 is the side view of the steel pipe gripper of the present utility model;

[0035] Figure 6 is the view in the direction of A-A of the present utility model;

[0036] Figure 7 is the view in the direction of B-B of the present utility model;

[0037] Figure 8 is the view in the direction of C-C of the present utility model;

[0038] Figure 9 This is the D-D view of the present utility model;

[0039] Figure 10 This is the E-E view of the present utility model;

[0040] Figure 11 This is the schematic structural view of the hook seat of the present utility model;

[0041] Figure 12 This is the schematic structural view of the hook of the present utility model;

[0042] Figure 13 This is the overall schematic view of the hook of the present utility model;

[0043] Figure 14 This is the schematic structure of the hook of the present utility model Figure 2 ;

[0044] Figure 15 This is the schematic assembly structure of the boom connecting piece and the slewing mechanism of the present utility model Figure 1 ;

[0045] Figure 16 This is the schematic assembly structure of the boom connecting piece and the slewing mechanism of the present utility model Figure 2 ;

[0046] Figure 17 This is the sectional view of the assembly of the boom connecting piece and the slewing mechanism of the present utility model;

[0047] Figure 18 This is the assembly of the boom connecting piece and the slewing mechanism of the present utility model Figure 1 ;

[0048] Figure 19 This is the assembly of the boom connecting piece and the slewing mechanism of the present utility model Figure 2 .

[0049] Wherein: 1 - crane, 101 - vehicle frame, 102 - under-chassis, 103 - cab, 104 - turntable, 105 - hydraulic cylinder, 106 - boom, 107 - jib, 2 - boom connecting member, 201 - lower articulated ring plate, 211 - second articulated ear plate, 202 - upper articulated ear plate, 3 - slewing mechanism, 301 - central slewing joint, 302 - support ring, 321 - bolt hole, 303 - slewing motor, 304 - buffer valve, 305 - connecting plate, 351 - first pin hole, 4 - steel pipe gripper, 401 - transition seat, 411 - central joint hole, 412 - horizontal pin hole, 413 - countersunk screw hole, 402 - passive cross beam, 403 - active cross beam, 404 - outer cover cylinder, 5 - hook assembly, 501 - hook cross bar, 502 - hook seat, 503 - hook, 531 - upper cross plate, 532 - vertical hook plate, 533 - horizontal hook plate, 534 - electric drive arm, 535 - hook claw, 6 - sliding socket mechanism, 601 - first horizontal pulley, 611 - extending towing rope, 602 - second slider, 603 - second horizontal pulley, 631 - retracting towing rope, 604 - first slider, 605 - horizontal cylinder, 7 - ranging sensor. Detailed implementation manners

[0050] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following further details the present utility model through embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0051] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0052] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. Embodiment

[0053] As Figures 1 to 19 shown, a tire-type pipe pile loader / unloader includes a crane 1, and the crane includes a vehicle frame 101 which is welded with Q460D grade steel plates, having good anti-fatigue performance and low-temperature resistance, and being applicable to the low-temperature climate in the north.

[0054] A vehicle chassis 102 is provided at the lower part of the vehicle frame, adopting the chassis structure and driving type of our company's mature QLY70 tire-type crane, being firm and durable and having been verified under harsh working conditions. The wheelbase is lengthened to 3850 mm, and the running is stable.

[0055] A cab 103 is provided at the upper part of the vehicle frame, and a turntable 104 is provided between the chassis and the cab. The turntable body is welded with Q460D grade steel plates, having good anti-fatigue performance and low-temperature resistance, and being applicable to the low-temperature climate in the north. The cab also has a lifting function, enabling the driver's horizontal line of sight to be 3400 - 5650 mm. It has obvious advantages for loading / unloading trains and stacking pipe piles. The lifting cylinder is equipped with a balance valve, a pipeline explosion-proof valve and a seasonal descent switch. The lifting system is safer.

[0056] A rotating mechanism is provided inside the turntable. The rotating mechanism adopts imported Rexroth products, having large torque, high reliability and long service life. An integral boom 106 and hydraulic cylinders 105 arranged on both sides of the integral boom are also provided at the upper part of the vehicle frame. The free end of the integral boom is hinged with a jib 107. The middle part of the hydraulic cylinder is hinged with the middle part of the integral boom, and the end part of the hydraulic cylinder is hinged with the tail end of the jib. The integral boom adopts a straight boom, and the jib adopts a gooseneck boom. The inner side of the gooseneck boom is bent at an obtuse angle, and the obtuse angle is between 135° - 165°. The main bodies of the boom and the jib are welded with HG70D grade steel plates and 27SiMn steel pipes. Welding processes such as preheating before welding and heat preservation after welding are adopted to ensure its high strength, low-temperature resistance and anti-fatigue performance.

[0057] A steel pipe gripper 4 is provided at the head end of the jib 107; the rated lifting capacity of the jib is 8 t, which is applicable to the loading / unloading operation of steel pipes with a length of 6 - 12 m, and the number of steel pipes that the gripper can hold is 1 - 5.

[0058] The steel pipe gripper 4 includes a horizontally arranged outer cover cylinder 409. A transition seat 401 is provided in the middle of the outer cover cylinder. Horizontally pin holes 412 are symmetrically arranged along both sides at the bottom of the transition seat. The transition seat is connected to the top surface of the outer cover cylinder through the horizontally pin holes by pins. A circle of countersunk screw holes 413 is provided at the top of the transition seat, and a central joint hole 411 is provided at the center of the transition seat.

[0059] A slewing mechanism 3 for driving the fixed crossbeam to rotate circumferentially is provided between the head end of the small arm and the transition seat 401. The slewing mechanism includes a slewing body. A central slewing joint 301 is provided along the central axis of the slewing body. The central slewing joint is screwed into the central joint hole of the transition seat. A slewing support ring 302 is provided at the lower part of the slewing body. A vertically downward arranged rolling bearing is provided between the slewing support ring and the outer ring of the slewing body. A circle of bolt holes 321 corresponding to the countersunk screw holes is provided at the bottom of the slewing support ring. The bolts are sequentially screwed into the bolt holes and the countersunk screw holes for threaded cooperation.

[0060] Slewing motors 303 are symmetrically arranged on both sides of the central slewing joint of the slewing body. A buffer valve 304 is provided on the slewing motor. The output shaft end of the slewing motor is connected to the slewing body through a slewing bearing. The slewing motor is a product of Eaton brand, and it drives the steel pipe gripper to grab and position the steel pipe during operation. The rated load of the steel pipe gripper is 8.0t, the variable scale range of the hook distance of the gripper is 5650 - 12150mm, it is suitable for steel pipes with a diameter of 100 - 2000mm, and it can rotate 360°.

[0061] Two vertically and parallel connection plates 305 are provided at the top of the slewing body. First pin holes 351 are symmetrically arranged on the two connection plates. A boom connecting piece 2 is provided between the two connection plates. The boom connecting piece includes an upper hinged ear plate 202 and a lower hinged ring plate 201.

[0062] Second pin holes corresponding to the first pin holes 351 are provided on the lower hinged ring plate 201. The lower hinged ring plate is arranged between the two connection plates 305, and a connection pin is provided in the first pin hole and the second pin hole.

[0063] The upper hinged ear plate 202 includes a first hinged ear plate and a second hinged ear plate 211 arranged in parallel. The head end of the small arm is arranged between the first hinged ear plate and the second hinged ear plate and is hinged through a hinge shaft.

[0064] The outer cover cylinder 409 is provided with a partition plate in the vertical direction to form a first sliding cavity and a second sliding cavity. A driving crossbeam 403 is provided in the first sliding cavity, and a driven crossbeam 402 is provided in the second sliding cavity. A sliding sleeve mechanism 6 is provided between the driving crossbeam and the driven crossbeam. The driving crossbeam and the driven crossbeam partially overlap, and the driving crossbeam and the driven crossbeam slide out or retract synchronously along the two ends of the outer cover cylinder of the outer cover cylinder through the sliding sleeve mechanism to adjust the overall length of the spreader.

[0065] The sliding socket mechanism 6 includes a first horizontal pulley 601 provided at the free end of the active crossbeam, a first slider 604 provided between the overlapping end of the active crossbeam and the first sliding cavity, the first slider is fixedly arranged with the first sliding cavity, a second horizontal pulley 603 provided at the free end of the passive crossbeam 402, a second slider 602 provided between the overlapping end of the passive crossbeam and the second sliding cavity, and the second slider is fixedly arranged with the second sliding cavity;

[0066] A traction rope 611 is sequentially wound around the first slider, the first horizontal pulley and the second slider, a retraction traction rope 631 is sequentially wound around the second slider, the second horizontal pulley and the first slider, and a horizontal oil cylinder 605 is provided between the active crossbeam and the passive crossbeam. The cylinder body of the horizontal oil cylinder is fixedly connected with the passive crossbeam, and the end of the telescopic shaft of the horizontal oil cylinder is fixedly arranged with the active crossbeam.

[0067] When the active crossbeam and the passive crossbeam extend synchronously, the telescopic shaft of the horizontal oil cylinder 605 extends, pushing the active crossbeam 403 to extend. The active crossbeam pulls the extension traction rope, and the extension traction rope drives the passive crossbeam to extend through the first horizontal pulley.

[0068] When the active crossbeam and the passive crossbeam retract synchronously, the telescopic shaft of the horizontal oil cylinder 605 retracts, driving the active crossbeam 403 to retract. The active crossbeam pulls the retraction traction rope, and the retraction traction rope drives the passive crossbeam to retract to the right through the pulley.

[0069] Hook assemblies 5 are provided at the telescopic ends of the active crossbeam and the passive crossbeam, and a distance measuring sensor 7 is provided on one of the hook assemblies at one end. The hook assembly 5 includes a hook crossbar 501 perpendicular to the telescopic ends of the active crossbeam and the passive crossbeam respectively. The hook crossbar is a rod with a cross-section in the shape of an inverted T. Five hook seats 502 are evenly arranged on the rod. T-shaped grooves are opened in the hook seats, and the hook seats are hooked on the hook crossbar through the T-shaped grooves. The hook seats on both sides correspond one by one. Hooks 503 are hinged to the hook seats, and the distance measuring sensor is arranged inside one of the hook seats.

[0070] The hook 503 includes an upper cross plate 531 and a vertical hook plate 532 arranged perpendicular to each other. A horizontal hook plate 533 perpendicular to the vertical hook plate is provided at the lower end of the vertical hook plate. The horizontal hook plate is longer than the upper cross plate. A separation groove is provided in the middle of the horizontal hook plate, and the separation groove divides the horizontal hook plate into two symmetrically arranged narrow horizontal hooks. After the hook lifts the steel pipe, the two narrow horizontal hooks on the horizontal hook plate move towards each other under force, forming a trapezoidal support body with large friction, so that the steel pipe will not slip and will not rotate in the air. Embodiment

[0071] The loading and unloading method of the loader includes: placing five steel pipes with the same diameter and the same length side by side closely for grasping.

[0072] Step 1: The crane, through the turnover mechanism and the cooperation of the small arm 107 and the large arm 106, drives the steel pipe gripper to translate horizontally and vertically to the hoisting position, and the slewing mechanism 3 rotates to drive the outer cover cylinder to be parallel to the steel pipe and located directly above the steel pipe;

[0073] Step 2: The sliding sleeve mechanism 6 is activated, the telescopic shaft of the horizontal oil cylinder 605 extends, pushing the active crossbeam 403 to extend. The active crossbeam pulls the extending traction rope 611, and the extending traction rope bypasses the first horizontal pulley to drive the passive crossbeam to extend. The active crossbeam 403 and the passive crossbeam 402 are synchronously slid out until the distance between the two end hooks is greater than the length of the steel pipe. The small arm of the crane drives the entire steel pipe gripper to move downward, and the steel pipe to be lifted and transferred is placed between the two corresponding hooks;

[0074] Step 3: The sliding sleeve mechanism 6 is activated again, the telescopic shaft of the horizontal oil cylinder 605 retracts, driving the active crossbeam to retract. The active crossbeam 403 pulls the retracting traction rope, and the retracting traction rope bypasses the pulley to drive the passive crossbeam to retract to the right. The active crossbeam 403 and the passive crossbeam 402 are synchronously driven to retract. The distance measuring sensor 7 continuously detects the distance between the two hooks, and the two hooks approach each other continuously to clamp the steel pipe;

[0075] Step 4: After the two hooks 503 clamp the steel pipe stably, the crane hoists the steel pipe upward through the turnover mechanism and the cooperation of the small arm and the large arm, and transfers the steel pipe to the designated position;

[0076] Step 5: When the steel pipe is placed at the designated position, the sliding sleeve mechanism is activated, driving the active crossbeam 403 and the passive crossbeam 402 to slide out synchronously until the distance between the two end hooks is greater than the length of the steel pipe, the hooks are disengaged from the steel pipe, and the steel pipe gripper returns to the initial state. Embodiment

[0077] Different from the hooks in Embodiment 1 and Embodiment 2, the hook has another structure. The hook 503 includes an upper cross plate 531. One end of the upper cross plate is inclined with an electric drive arm 534. The output end of the electric drive arm is hinged with a hook claw 535. The hook claw is a hollow triangular body. The front end of the hook claw is provided with a groove-shaped bayonet. The head of the hook claw is located on one of the triangular sides, and the tail of the hook claw is located at the top corners of the other two triangular sides. The top corners are smoothly transitioned to form a connecting section. A bolt hole perpendicular to the connecting section is provided on the connecting section. A universal bolt is provided in the bolt hole. The head of the universal bolt is fastened by a nut, and the tail of the universal bolt is hinged with the output end of the electric drive arm 534.

[0078] The crane, through the turnover mechanism and the cooperation of the small arm 107 and the large arm 106, drives the steel pipe gripper to translate horizontally and vertically to the hoisting position, and the slewing mechanism rotates to drive the outer cover cylinder to be parallel to the steel pipe and located directly above the steel pipe;

[0079] The sliding sleeve mechanism 6 is activated, the telescopic shaft of the horizontal oil cylinder 605 extends, pushing the active crossbeam 403 to extend. The active crossbeam pulls the extending traction rope 611, and the extending traction rope drives the passive crossbeam 402 to extend around the first horizontal pulley. The synchronous sliding out of the active crossbeam 403 and the passive crossbeam 402 is achieved until the distance between the two end hooks is greater than the length of the steel pipe. The crane's small arm drives the steel pipe gripper 4 to move downward as a whole, and the steel pipe to be lifted and transferred is placed between two corresponding hooks; the electric drive arm is activated, and the output end of the electric drive arm extends or retracts according to the achieved angle, driving the hook claws to translate in the vertical plane to find the best clamping position, and then the electric drive arm is turned off.

[0080] The sliding sleeve mechanism 6 is activated again, the telescopic shaft of the horizontal oil cylinder 605 retracts, driving the active crossbeam 403 to retract. The active crossbeam pulls the retracting traction rope 631, and the retracting traction rope drives the passive crossbeam to retract around the pulley. The synchronous retraction of the driving active crossbeam 403 and the passive crossbeam 402 is achieved, and the distance measuring sensor 7 continuously detects the distance between the two hooks. The two hooks approach each other continuously, and the hook claws clamp the steel pipe.

[0081] After the hook claws of the two hooks clamp the steel pipe stably, the crane hoists the steel pipe upward through the turnover mechanism and the cooperation of the small arm and the large arm, and transfers the steel pipe to the designated position;

[0082] When the steel pipe is placed at the designated position, the sliding sleeve mechanism 6 is activated, driving the active crossbeam 403 and the passive crossbeam 402 to slide out synchronously until the distance between the two end hooks is greater than the length of the steel pipe. The hooks are disengaged from the steel pipe, and the steel pipe gripper returns to the initial state, waiting for the next loading and unloading of the steel pipe.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0084] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A tire-type pile loader, comprising a crane (1), the crane comprising a frame (101), characterized in that: The lower part of the vehicle frame is provided with an undercarriage (102), the upper part of the vehicle frame is provided with a cab (103), a turntable (104) is provided between the chassis and the cab, a rotating mechanism is provided in the turntable, the upper part of the vehicle frame is also provided with an integral boom (106) and hydraulic cylinders (105) arranged on both sides of the integral boom, the free end of the integral boom is hinged with a forearm (107), the middle part of the hydraulic cylinder is hinged with the middle part of the integral boom, the end of the hydraulic cylinder is hinged with the tail end of the forearm, and the head end of the forearm is provided with a steel pipe gripper (4); The steel pipe gripper (4) comprises a horizontally arranged outer cover tube (404), a transition seat (401) is provided in the middle of the outer cover tube, a slewing mechanism (3) for driving a fixed beam to slew in a circumferential direction is provided between the head end of the forearm and the transition seat, a partition plate is provided vertically along the outer cover tube to form a first sliding cavity and a second sliding cavity, an active beam (403) is provided in the first sliding cavity, a passive beam (402) is provided in the second sliding cavity, a sliding sleeve mechanism (6) is provided between the active beam and the passive beam, the active beam and the passive beam partially overlap, and the active beam and the passive beam are synchronously slid out or retracted along the two ends of the outer cover tube through the sliding sleeve mechanism to adjust the overall length of the sling, and a hook assembly (5) is provided at the telescopic end of the active beam and the passive beam, and a distance measuring sensor (7) is provided on the hook assembly at one end.

2. The tire-type pipe pile loader according to claim 1, characterized in that: The hook assembly (5) comprises a hook crossbar (501) respectively arranged perpendicularly to the telescopic ends of the active crossbar and the passive crossbar, the hook crossbar being a rod body with an inverted T-shaped cross section, a plurality of hook seats (502) being evenly distributed on the rod body, the hook seats being provided with T-shaped slots, the hook seats being hooked on the hook crossbar through the T-shaped slots, the hook seats on both sides corresponding to each other one by one, the hook seats being hingedly provided with hooks (503), and a distance measuring sensor being arranged on the inner side of one of the hook seats.

3. The tire-type pipe pile loader according to claim 2, characterized in that: The hook (503) comprises an upper horizontal plate (531) and a vertical hook plate (532) which are arranged perpendicular to each other. A horizontal hook plate (533) is arranged perpendicular to the vertical hook plate at the lower end of the vertical hook plate. The horizontal hook plate is longer than the upper horizontal plate. A separation groove is arranged in the middle of the horizontal hook plate. The separation groove separates the horizontal hook plate (533) into two symmetrically arranged narrow horizontal hooks.

4. The tire-type pipe pile loader according to claim 2, characterized in that: The hook (503) comprises an upper horizontal plate, one end of which is inclinedly provided with an electric drive arm (534), an output end of which is hingedly provided with a hook claw (535), the hook claw being a hollow triangle, the front end of which is provided with a slot-shaped bayonet, the head of which is located on one of the triangular sides, the tail of which is located at the vertex of the other two triangular sides, the vertex being smoothly transitioned to form a connecting section, the connecting section being provided with a bolt hole which is arranged perpendicular to the connecting section, a universal bolt being provided in the bolt hole, the head of which is fastened by a nut, and the tail of which is hingedly connected to the output end of the electric drive arm.

5. The tire-type pipe pile loader according to claim 1, characterized in that: The sliding sleeve mechanism (6) comprises a first horizontal pulley (601) provided at the free end of the active crossbeam, a first slider (604) provided between the overlapping end of the active crossbeam and the first sliding cavity, the first slider being fixedly arranged with the first sliding cavity, a second horizontal pulley (603) provided at the free end of the passive crossbeam (402), a second slider (602) provided between the overlapping end of the passive crossbeam and the second sliding cavity, the second slider being fixedly arranged with the second sliding cavity; An extending traction rope (611) is sequentially wound between the first slider, the first horizontal pulley and the second slider, and a retracting traction rope (631) is sequentially wound between the second slider, the second horizontal pulley and the first slider. A horizontal oil cylinder (605) is provided between the active crossbeam and the passive crossbeam. The cylinder body of the horizontal oil cylinder is fixedly connected to the passive crossbeam, and the telescopic shaft end of the horizontal oil cylinder is fixedly arranged on the active crossbeam.

6. The tire-type pipe pile loader according to claim 4, characterized in that: The bottom of the transition seat (401) is symmetrically provided with horizontal pin holes (412) along both sides. The transition seat is connected to the top surface of the outer cover tube (404) through the horizontal pin holes via pins. A circle of countersunk screw holes (413) is provided on the top of the transition seat. A central joint hole (411) is provided at the center of the transition seat.

7. The tire-type pipe pile loader according to claim 6, characterized in that: The slewing mechanism (3) comprises a slewing body, the slewing body is provided with a central slewing joint (301) along the central axis, the central slewing joint is screwed into the central joint hole of the transition seat, a slewing support ring (302) is provided at the lower part of the slewing body, a rolling bearing is provided vertically downward between the slewing support ring and the outer ring of the slewing body, a circle of bolt holes (321) corresponding to the countersunk screw holes are provided at the bottom of the slewing support ring, and bolts are screwed into the bolt holes and the countersunk screw holes in sequence to engage with each other by threads; The rotary body is symmetrically provided with rotary motors (303) along both sides of the central rotary joint, the rotary motor is provided with a buffer valve (304), and the output shaft end of the rotary motor is connected to the rotary body through a rotary bearing.

8. The tire-type pipe pile loader according to claim 7, characterized in that: Two vertical and mutually parallel connecting plates (305) are provided at the top of the rotary body, first pin holes (351) are symmetrically provided on the two connecting plates, and a boom connecting member (2) is provided between the two connecting plates, the boom connecting member (2) comprising an upper hinged ear plate (202) and a lower hinged ring plate (201); The lower hinged ring plate (201) is provided with a second pin shaft hole corresponding to the first pin shaft hole (351); the lower hinged ring plate is arranged between the two connecting plates; and connecting pin shafts are arranged in the first pin shaft hole and the second pin shaft hole; The upper hinged ear plate (202) comprises a first hinged ear plate and a second hinged ear plate (211) which are arranged parallel to each other, and the head end of the forearm is arranged between the first hinged ear plate and the second hinged ear plate and is hinged via a hinge shaft.

9. The tire-type pipe pile loader according to claim 1, characterized in that: The integral boom (106) adopts a straight boom, and the small arm (107) adopts a gooseneck boom, the inner side of the gooseneck boom is bent at an obtuse angle, and the obtuse angle is between 135° and 165°.

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