Multifunctional platform type lorry-mounted crane

Abstract

The invention relates to the technical field of crane equipment, in particular to a multifunctional platform type lorry-mounted crane which is characterized in that when a hoisting rope is wound or unwound, a double-shaft motor drives two driving gears to rotate, and the driving gears are meshed with driven gears located on linkage rods, so that the linkage rods are driven to rotate; a linkage rod drives two rotating rods to rotate through a first driving bevel gear and a first driven bevel gear, worms on the rotating rods are meshed with worm wheels at the two ends of a take-up shaft, then the take-up shaft is driven to rotate, and winding or unwinding of a lifting rope is achieved. In the transmission mode, worm gear and worm transmission has self-locking performance, and when the motor stops rotating, the worm gear cannot drive the worm to rotate under the action of the gravity of the hoisting rope and the hoisted object, so that the state of the hoisting rope can be stably kept, the problem that the state is unstable due to the fact that the self-locking capacity of the motor is insufficient independently is solved, and the service life of the hoisting rope is prolonged. And the operation precision and quality are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crane equipment, and particularly relates to a multifunctional platform type truck-mounted crane. BACKGROUND

[0002] The crane equipment is a multifunctional engineering machinery for vertically lifting and horizontally carrying heavy objects, and its core function is to realize precise hoisting and space transfer of heavy objects through combination of lifting, luffing, rotating and running actions, and is widely applied to fields of construction, logistics, manufacturing and rescue, and is a key equipment for improving work efficiency, reducing labor intensity and ensuring construction safety in modern industry.

[0003] The prior art patent CN222007129U discloses a truck-mounted crane, which comprises an adjusting arm, a rope passing ring is fixedly connected to the top of the adjusting arm, a support plate is fixedly connected to one end of the adjusting arm, a connecting piece is clamped to the top of the adjusting arm, and a support rod is fixedly connected to the top of the connecting piece; the prior art has the following advantages and effects: it is more flexible to use, the hook hooks the goods, when the hoisting rope is tightened, the hoisting rope drives the pulley to rotate, thereby hoisting, the rope passing ring avoids deviation of the hoisting rope, when it is necessary to replace the pulley, the first bolt and the second bolt are removed, the connecting piece is pulled upward and separated from the adjusting arm, can be quickly disassembled, the connecting piece is re-clamped to the support plate, the support plate supports the connecting piece, the first bolt and the second bolt fix the connecting piece, the pulley is conveniently installed, and the service life of the hoisting rope is affected after the pulley is worn.

[0004] In the foregoing prior art, when the hoisting rope is wound or unwound, the motor is directly used to complete the winding and unwinding action in cooperation with the winding shaft, this method is simple and convenient, but the self-locking ability of the motor alone cannot stably maintain the state of the hoisting rope under the action of the gravity of the hoisting rope and the hoisted object, thereby affecting the precision and quality of work. SUMMARY

[0005] The present application aims to provide a multifunctional platform type truck-mounted crane, and solve the technical problem that in the prior art, when the hoisting rope is wound or unwound, the motor is directly used to complete the winding and unwinding action in cooperation with the winding shaft, this method is simple and convenient, but the self-locking ability of the motor alone cannot stably maintain the state of the hoisting rope under the action of the gravity of the hoisting rope and the hoisted object, thereby affecting the precision and quality of work.

[0006] In order to achieve the above object, the application provides a multifunctional platform type truck-mounted crane, which comprises an adjusting arm, a supporting arm and a platform plate, the platform plate is provided with a mounting seat, two first supporting blocks, two second supporting blocks and two supporting seats, the mounting plate is provided with two first mounting boxes, each first mounting box is rotationally provided with a driving gear, the two driving gears between the two first mounting boxes are driven by a double-shaft motor, the two first supporting blocks are rotationally provided with a linkage rod through a bearing, the linkage rod is provided with two driven gears, each driven gear is located in the corresponding first mounting box, and the driving gear is engaged with the driven gear, each second supporting block is rotationally provided with a rotating rod through a bearing, one end of the rotating rod is provided with a worm, the two rotating rods and the linkage rod are connected through a first driving bevel gear and a first driven bevel gear, the two supporting seats are rotationally provided with a take-up spool through a bearing, the take-up spool is wound with a hoisting rope, one end of the hoisting rope is provided with a lifting hook, both ends of the take-up spool are provided with a worm wheel, the worm is engaged with the worm wheel and located below the worm wheel, the adjusting arm is hingedly arranged on the supporting arm, and the supporting arm is fixedly arranged on the platform plate.

[0007] Among them, the supporting arm is provided with a first guide wheel, the adjusting wheel is provided with two second guide wheels, and the hoisting rope passes through the first guide wheel and the two second guide wheels.

[0008] Among them, the adjusting arm and the supporting arm are provided with a hydraulic cylinder, the cylinder end of the hydraulic cylinder is hingedly connected with the supporting arm, and the telescopic end of the hydraulic cylinder is hingedly connected with the adjusting arm.

[0009] Among them, the number of outer teeth of the driven gear is greater than that of the driving gear, and the driving gear is located on the outer side of the driven gear.

[0010] Among them, a first protection box is arranged between each first supporting block and each second supporting block, and the first driving bevel gear and the first driven bevel gear are located in the first protection box.

[0011] Among them, a second protection box is arranged on the outer side of each supporting seat, and the worm wheel and the worm are located in the second protection box.

[0012] Among them, the multifunctional platform type truck-mounted crane further comprises a detachable mechanism, the detachable mechanism is fixedly connected with the platform plate and located below the platform plate.

[0013] The multifunctional platform type truck-mounted crane of the application, when winding or unwinding the hoisting rope, the double-shaft motor drives two driving gears to rotate, the driving gears are engaged with the driven gears on the linkage rod, thereby driving the linkage rod to rotate, the linkage rod drives two rotating rods to rotate through the first driving bevel gear and the first driven bevel gear, the worm on the rotating rod is engaged with the worm gears at both ends of the take-up shaft, thereby driving the take-up shaft to rotate, realizing winding or unwinding of the hoisting rope; in this transmission mode, the worm and gear transmission has self-locking property, when the motor stops rotating, under the action of the hoisting rope and the gravity of the hoisted object, the worm cannot drive the worm gear to rotate, thereby stably maintaining the state of the hoisting rope, avoiding the state instability problem caused by insufficient self-locking capacity of the motor alone, effectively improving the precision and quality of operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows.

[0015] Figure 1 is a three-dimensional view of the first embodiment of the present application.

[0016] Figure 2 is a front view of the platform plate in the first embodiment of the present application.

[0017] Figure 3 is a sectional view of line A-A in the first embodiment of the present application. Figure 2

[0018] Figure 4 is a sectional view of line B-B in the first embodiment of the present application. Figure 2

[0019] Figure 5 is a sectional view of line C-C in the first embodiment of the present application. Figure 4

[0020] Figure 6 is a side view of the second embodiment of the present application.

[0021] Figure 7 is a front view of the detachable mechanism in the second embodiment of the present application.

[0022] Figure 8 is a sectional view of line D-D in the second embodiment of the present application. Figure 7

[0023] Figure 9 is a sectional view of line E-E in the second embodiment of the present application. Figure 8

[0024] ​​​​​Figure 10 is the Figure 9 Cross-sectional view of F-F line.

[0025] 101-adjusting arm, 102-supporting arm, 103-platform plate, 104-mounting seat, 105-first supporting block, 106-second supporting block, 107-supporting seat, 108-first mounting box, 109-driving gear, 110-double-shaft motor, 111-linkage rod, 112-driven gear, 113-rotating rod, 114-worm, 115-first driving bevel gear, 116-first driven bevel gear, 117-take-up spool, 118-together heavy rope, 119-suspender, 120-worm wheel, 121-first guide wheel, 122-second guide wheel, 123-hydraulic cylinder, 124-first protection box, 125-second protection box, 126-detachable mechanism, 201-I-shaped welded seat, 202-L-shaped clamping plate, 203-screw rod, 204-sliding seat, 205-sliding block, 206-threaded sleeve, 207-slotted groove, 208-power motor, 209-rotating shaft, 210-limiting plate, 211-positioning rod, 212-positioning groove, 213-fixing rod, 214-second driving bevel gear, 215-second driven bevel gear. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, examples of which are shown in the drawings. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] First embodiment:

[0028] Please refer to Figures 1-5The application provides a multifunctional platform type truck-mounted crane, which comprises an adjusting arm 101, a supporting arm 102 and a platform plate 103, the platform plate 103 is provided with a mounting seat 104, two first supporting blocks 105, two second supporting blocks 106 and two supporting seats 107, the mounting plate is provided with two first mounting boxes 108, each first mounting box 108 is rotationally provided with a driving gear 109, the two driving gears 109 between the two first mounting boxes 108 are driven by a double-shaft motor 110, the two first supporting blocks 105 are rotationally provided with a linkage rod 111 through a bearing, the linkage rod 111 is provided with two driven gears 112, each driven gear 112 is located in the corresponding first mounting box 108, and the driving gear 109 is engaged with the driven gear 112, each second supporting block 106 is rotationally provided with a rotating rod 113 through a bearing, one end of the rotating rod 113 is provided with a worm 114, the two rotating rods 113 and the linkage rod 111 are connected through a first driving bevel gear 115 and a first driven bevel gear 116, the two supporting seats 107 are rotationally provided with a take-up shaft 117 through a bearing, the take-up shaft 117 is wound with a hoisting rope 118, one end of the hoisting rope 118 is provided with a lifting hook 119, both ends of the take-up shaft 117 are provided with a worm wheel 120, and the worm 114 is engaged with the worm wheel 120 and located below the worm wheel 120, the adjusting arm 101 is hingedly arranged on the supporting arm 102, and the supporting arm 102 is fixedly arranged on the platform plate 103.

[0029] In the embodiment, the double-shaft motor 110 drives the two driving gears 109 to rotate, the driving gears 109 are engaged with the driven gears 112 on the linkage rod 111, and the linkage rod 111 is driven to rotate. The linkage rod 111 further transmits power to the two rotating rods 113 through the cooperation of the first driving bevel gear 115 and the first driven bevel gear 116, so that the worm 114 on the rotating rod 113 rotates. The worm 114 is engaged with the worm wheels 120 at both ends of the take-up shaft 117, thereby driving the take-up shaft 117 to rotate, and realizing the winding or unwinding of the hoisting rope 118. Since the worm wheel 120 and the worm 114 have self-locking property, when the motor stops rotating, the worm wheel 120 cannot drive the worm 114 to rotate under the action of the hoisting rope 118 and the gravity of the hoisted object, so that the state of the hoisting rope 118 can be stably maintained, the problem of unstable state of the hoisting rope 118 caused by insufficient self-locking capacity of the motor is avoided, the precision and quality of operation are greatly improved, and meanwhile, the reasonable layout of the multi-stage transmission structure on the platform plate 103 ensures the compactness and stability of the overall structure.

[0030] Further, the support arm 102 is provided with a first guide wheel 121, the adjusting wheel is provided with two second guide wheels 122, and the hoisting rope 118 passes through the first guide wheel 121 and the two second guide wheels 122.

[0031] In this embodiment, during the winding or unwinding of the hoisting rope 118, the hoisting rope 118 passes through the first guide wheel 121 and the two second guide wheels 122, and can move smoothly along a predetermined path, reducing the friction and wear of the hoisting rope 118 during movement, and prolonging the service life of the hoisting rope 118.

[0032] Further, a hydraulic cylinder 123 is arranged between the adjusting arm 101 and the support arm 102, and the cylinder end of the hydraulic cylinder 123 is hinged to the support arm 102, and the telescopic end of the hydraulic cylinder 123 is hinged to the adjusting arm 101.

[0033] In this embodiment, by controlling the extension and retraction of the hydraulic cylinder 123, the angle of the adjusting arm 101 relative to the support arm 102 can be easily changed, thereby adjusting the working range and height of the lifting hook 119 to meet the hoisting needs in different working conditions.

[0034] Further, the number of external teeth of the driven gear 112 is greater than the number of external teeth of the driving gear 109, and the driving gear 109 is located on the outside of the driven gear 112.

[0035] In this embodiment, during transmission, the driving gear 109 drives the driven gear 112 to rotate, and since the driven gear 112 has more teeth, its rotational speed is relatively low, but the torque is increased. This characteristic enables the driving of the take-up shaft 117 to provide greater lifting force, meeting the hoisting needs of objects of different weights.

[0036] Further, a first protective box 124 is arranged between each first support block 105 and each second support block 106, and the first driving bevel gear 115 and the first driven bevel gear 116 are both located in the first protective box 124.

[0037] In this embodiment, during operation, the first protective box 124 can prevent dust, debris, and the like from entering the gear transmission part, avoiding problems such as gear wear and jamming caused by foreign matter intrusion, and prolonging the service life of the gears. At the same time, the first protective box 124 also plays a safety protection role, preventing operators from accidentally contacting rotating gears during equipment operation, ensuring the personal safety of operators, and improving the safety and reliability of the equipment.

[0038] Further, the outer side of each support seat 107 is provided with a second protective box 125, and the worm wheel 120 and the worm 114 are located in the second protective box 125.

[0039] In this embodiment, the second protective box 125 can effectively prevent external factors from interfering with the transmission of the worm wheel 120 and the worm 114.

[0040] Further, the multifunctional platform type truck crane further comprises a detachable mechanism 126 which is fixedly connected with the platform plate 103 and located below the platform plate 103.

[0041] In this embodiment, when the equipment is installed, the truck crane can be conveniently fixed on the vehicle through the detachable mechanism 126, thereby improving the installation efficiency.

[0042] When using the multifunctional platform type truck crane of the present embodiment, according to the position and height requirement of the hoisted object, the operating control device is used to make the hydraulic cylinder 123 extend and retract, since the cylinder end of the hydraulic cylinder 123 is hinged with the support arm 102 and the extension end is hinged with the adjusting arm 101, the adjusting arm 101 is driven to rotate around the hinge point to adjust to a suitable working angle; then the double-shaft motor 110 is started, the double-shaft motor 110 drives the two driving gears 109 to rotate in the first mounting box 108, since the driving gears 109 are engaged with the driven gears 112 located on the linkage rod 111, and the number of external teeth of the driven gears 112 is greater than that of the driving gears 109, the linkage rod 111 is driven to rotate after speed reduction and torque increase, the linkage rod 111 further transmits power to the two rotating rods 113 through the cooperation of the first driving bevel gear 115 and the first driven bevel gear 116, so that the worm 114 on the rotating rod 113 rotates, the worm 114 is engaged with the worm wheel 120 at both ends of the take-up shaft 117, thereby driving the take-up shaft 117 to rotate; at this time, the hoisting rope 118 moves stably under the rotation of the take-up shaft 117 through the guiding action of the first guide wheel 121 on the support arm 102 and the two second guide wheels 122 on the adjusting arm 101, the hook 119 at one end of the hoisting rope 118 descends to the object position, after the object is hung, reverse operation is performed to make the take-up shaft 117 rotate in the reverse direction to wind the hoisting rope 118, thereby lifting the object, during the hoisting process, the self-locking property of the worm wheel 120 and the worm 114 ensures that the hoisting rope 118 and the gravity of the hoisted object will not cause the take-up shaft 117 to reverse when the motor stops or fails, so that the state of the hoisting rope 118 can be stably maintained, thereby ensuring the working precision and quality, and after the hoisting task is completed, the object is lowered and the hoisting rope 118 is arranged.

[0043] Second embodiment:

[0044] On the basis of the first embodiment, please refer to Figures 6-10 The detachable mechanism 126 includes a plurality of clamping pieces and an I-shaped welded seat 201. The plurality of clamping pieces are arranged in a surrounding manner below the platform plate 103. The I-shaped welded seat 201 is located between the plurality of clamping pieces. The plurality of clamping pieces are also respectively abutted to the outer side of the I-shaped welded seat 201.

[0045] The clamping piece includes an L-shaped clamping plate 202, a screw rod 203 and a sliding seat 204. The L-shaped clamping plate 202 is provided with a sliding block 205. The sliding block 205 is provided with a threaded sleeve 206. The sliding seat 204 has a sliding groove 207. The middle part of the platform plate 103 is rotationally provided with a rotating shaft 209 through a power motor 208. The L-shaped clamping plate 202 is slidably connected with the sliding seat 204 and located in the sliding seat 204. The sliding block 205 is located in the sliding groove 207. The L-shaped clamping plate 202 is abutted to the outer side of the I-shaped welded seat 201. The screw rod 203 is rotationally arranged below the platform plate 103 through a fixed block. The screw rod 203 is also threadedly connected with the threaded sleeve 206 and located in the threaded sleeve 206. The screw rod 203 penetrates through both ends of the sliding seat 204. The screw rod 203 and the rotating shaft 209 are connected through a second driving bevel gear 214 and a second driven bevel gear 215.

[0046] Secondly, the detachable mechanism 126 also includes a limiting plate 210. The lower side of the limiting plate 210 is provided with a plurality of positioning rods 211. The upper side of the I-shaped welded seat 201 has a plurality of positioning grooves 212. The limiting plate 210 is fixedly connected with the platform plate 103 through a plurality of fixed rods 213 and located below the platform plate 103. The limiting plate 210 is also abutted to the upper end surface of the I-shaped welded seat 201. The plurality of positioning rods 211 are inserted into the corresponding positioning grooves 212.

[0047] When the multifunctional platform type truck-mounted crane is used, first, the I-shaped welded seat 201 is welded at the preset mounting position of the vehicle, then the limiting plate 210 in the detachable mechanism 126 is abutted on the I-shaped welded seat 201, and at the same time, the plurality of positioning rods 211 below the limiting plate 210 are inserted into the corresponding positioning grooves 212 above the I-shaped welded seat 201, further precise positioning and stable connection of the I-shaped welded seat 201 are performed, and reliable installation of the multifunctional platform type truck-mounted crane and the vehicle is ensured; then the power motor 208 is controlled, the power motor 208 drives the rotating shaft 209 to rotate, since the rotating shaft 209 and the screw rod 203 are connected through the second driving bevel gear 214 and the second driven bevel gear 215, the screw rod 203 in the plurality of clamping pieces is driven to rotate; the screw rod 203 is threadedly connected with the threaded sleeve 206 arranged on the slider 205 of the L-shaped clamping plate 202, in the rotating process of the screw rod 203, the threaded sleeve 206 moves along the screw rod 203, and since the L-shaped clamping plate 202 slides in the sliding groove 207 of the sliding seat 204 through the slider 205, the plurality of L-shaped clamping plates 202 arranged below the platform plate 103 in a surrounding manner are brought together, and are abutted on the outer sides of the I-shaped welded seat 201 respectively, so that clamping and fixing are realized; when disassembling, the power motor 208 is reversely operated, the screw rod 203 is reversed, the L-shaped clamping plate 202 is driven to move outward to loosen the I-shaped welded seat 201, and then the limiting plate 210 is removed, so that the disassembly is completed.

[0048] The above disclosure is only one or more preferred embodiments of the present application, and cannot limit the scope of the rights of the present application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A multi-functional platform-type truck-mounted crane, characterized in that, The system includes an adjusting arm, a support arm, and a platform plate. The platform plate is equipped with a mounting base, two first support blocks, two second support blocks, and two support seats. The mounting plate has two first mounting boxes, each containing a rotatable drive gear. The two drive gears between the two first mounting boxes are driven by a dual-shaft motor. A linkage rod is rotatably connected between the two first support blocks via bearings. The linkage rod has two driven gears, each located within its corresponding first mounting box, and the drive gear meshes with the driven gear. Each of the second support blocks is rotatably mounted on a rotating rod via a bearing. One end of the rotating rod is equipped with a worm gear. The two rotating rods and the linkage rod are connected by a first driving bevel gear and a first driven bevel gear. A take-up shaft is rotatably mounted on each of the two support seats via bearings. A lifting rope is wound on the take-up shaft. One end of the lifting rope is equipped with a hook. Both ends of the take-up shaft are equipped with worm gears, and the worm gear meshes with the worm gear and is located below the worm gear. The adjusting arm is hinged to the support arm, and the support arm is fixedly mounted on the platform plate.

2. The multi-functional platform-type truck-mounted crane as described in claim 1, characterized in that, The support arm is provided with a first guide wheel, the adjusting wheel is provided with two second guide wheels, and the lifting rope passes through the first guide wheel and the two second guide wheels.

3. The multi-functional platform-type truck-mounted crane as described in claim 2, characterized in that, A hydraulic cylinder is provided between the adjusting arm and the supporting arm, and the cylinder body end of the hydraulic cylinder is hinged to the supporting arm, and the telescopic end of the hydraulic cylinder is hinged to the adjusting arm.

4. The multi-functional platform-type truck-mounted crane as described in claim 3, characterized in that, The number of external teeth of the driven gear is greater than the number of external teeth of the driving gear, and the driving gear is located outside the driven gear.

5. The multi-functional platform-type truck-mounted crane as described in claim 4, characterized in that, A first protective box is provided between each of the first support blocks and each of the second support blocks, and the first driving bevel gear and the first driven bevel gear are both located inside the first protective box.

6. The multi-functional platform-type truck-mounted crane as described in claim 5, characterized in that, Each of the support bases is provided with a second protective box on its outer side, and the worm gear and the worm are both located inside the second protective box.

7. The multi-functional platform-type truck-mounted crane as described in claim 6, characterized in that, The multi-functional platform-type truck-mounted crane also includes a detachable mechanism, which is fixedly connected to the platform plate and located below the platform plate.

Images