A traction angle adjustment device for the traveling mechanism of a cable-suspended crane

Abstract

The present invention discloses a traction angle adjustment device for a cable-supported crane traveling mechanism, belonging to the field of cable-supported crane traveling mechanisms, and solving the problems of large potential safety hazards and low working efficiency caused by the difficulty in adjusting the traction angle of the existing cable-supported crane traveling mechanism. The traction angle adjustment device includes an adjustment mechanism for adjusting the inclination angle of the traction top bracket relative to the traveling mechanism main body, and a locking mechanism for locking the inclination angle between the traction top bracket and the traveling mechanism main body is further provided. For the traction angle adjustment device of the cable-supported crane traveling mechanism of the present invention, the traction top bracket can be rotationally adjusted to adapt to the change of the main cable angle, so as to realize the adjustment of the traction walking angle of the cable-supported crane, and improve the safety and working efficiency of the cable-supported crane walking on the main cable.

Description

Technical Field

[0001] The present invention relates to the field of traveling mechanisms of cable-suspended cranes, and more specifically, to a device for adjusting the traction angle of a traveling mechanism of a cable-suspended crane. Background Art

[0002] Existing cable-suspended cranes, such as the cable-suspended crane with hydraulic traction combined with roller walking with the patent number ZL201420056005.1, the traveling process of the cable-suspended crane when going upward is as follows: the lower gripper of the traction jack is loosened, the upper gripper clamps the steel strand, and the traction lifting cylinder pushes the entire cable-suspended crane and it rolls upward by relying on the traveling rollers; the traveling process of the cable-suspended crane when going downward is as follows: the upper gripper of the traction jack is loosened, the lower gripper clamps the steel strand, the traction lifting cylinder reaches the stroke, then the upper gripper clamps and the lower gripper is loosened, and due to the action of the downward sliding force of the cable-suspended crane, the cable-suspended crane walks downward by relying on the traveling rollers. However, in the actual construction process, since the main cable of the suspension bridge is designed in an arc shape, and the traction top support is hinged with the main body of the traveling mechanism, when the traveling mechanism of the cable-suspended crane is traction-driven, affected by the change of the traction angle, it often occurs that the traction jack is difficult to clamp several traction steel strands at the same time, there are great potential safety hazards during the traveling process, and even the problem of inability to travel may occur. Therefore, it is urgent to research and develop a device for adjusting the traction angle of a traveling mechanism of a cable-suspended crane. Summary of the Invention

[0003] The technical problem to be solved by the present invention is in view of the above deficiencies of the prior art. The purpose of the present invention is to provide a device for adjusting the traction angle of a traveling mechanism of a cable-suspended crane, so as to improve the safety and working efficiency of the cable-suspended crane when traveling on the main cable.

[0004] In order to achieve the above purpose, the present invention provides a device for adjusting the traction angle of a traveling mechanism of a cable-suspended crane, including an adjusting mechanism for adjusting the inclination angle of the traction top support relative to the main body of the traveling mechanism, and a locking mechanism for locking the inclination angle between the traction top support and the main body of the traveling mechanism is further provided between the traction top support and the main body of the traveling mechanism.

[0005] Further, the adjusting mechanism includes a chain block and a steel wire rope erected above the main body of the traveling mechanism. The chain block is suspended on the steel wire rope, and the hook of the chain block hooks on the top of the traction top support.

[0006] Further, the adjusting mechanism further includes a crane. The crane is slidably installed on the steel wire rope, and the chain block is suspended at the bottom of the crane.

[0007] Further, the locking mechanism includes a wedge block assembly. The wedge block assembly is detachably installed on the main body of the traveling mechanism below the traction top support.

[0008] Further, the wedge block assembly includes a support plate and a support block. The support plate is inclined and fixed to the end face of the walking mechanism main body. The support block is installed on the support plate through fastening bolts, and a plurality of threaded holes adapted to the fastening bolts are provided on the support plate.

[0009] Further, the adjusting mechanism includes an angle adjusting jack. Two ends of the angle adjusting jack are respectively hinged to the bottom of the traction top support and the end face of the walking mechanism main body.

[0010] Further, the locking mechanism includes a screw sleeve and two screw rods. The thread directions of the two screw rods are opposite. One ends of the two screw rods are respectively threadedly connected to the screw sleeve, and the other ends are respectively hinged to the upper part of the traction top support and the upper part of the walking mechanism main body. A driving mechanism for driving the screw sleeve to rotate is further provided on the screw sleeve.

[0011] Further, two sets of the screw sleeve and the two screw rods are provided, and the two sets of screw sleeves and screw rods are symmetrically arranged. The driving mechanism is installed between the two sets of screw sleeves.

[0012] Further, the driving mechanism includes a fixed bracket, a turbine, a worm, and a motor. The two sets of screw sleeves are rotatably installed at the bottom of the fixed bracket. The worm is rotatably installed at the bottom of the fixed bracket. A turbine is fixed to the outer wall of each screw sleeve. The worm is meshed with the turbine. The motor is installed on the fixed bracket, and the output end of the motor is connected to the worm.

[0013] Further, the adjusting mechanism further includes an inclination sensor installed at the end of the walking mechanism main body. The inclination sensor, the angle adjusting jack, and the motor are all electrically connected to the PLC control module of the cable-suspended crane.

[0014] Beneficial Effects

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. For the traction angle adjustment device of the cable-suspended crane walking mechanism of the present invention, through the addition of the adjusting mechanism and the locking mechanism, during the walking of the cable-suspended crane, the adjusting mechanism can be used to adjust the inclination angle of the traction top support relative to the walking mechanism main body, so that the traction top support can be rotated and adjusted to adapt to the change of the main cable angle, realizing the adjustment of the traction walking angle of the cable-suspended crane, ensuring that the traction jack can firmly hold all the traction steel strands. After the inclination angle is adjusted, the locking mechanism is used for locking, and then the walking can be carried out, effectively improving the safety and working efficiency of the cable-suspended crane walking on the main cable.

[0017] 2. The traction angle adjustment device of the cable-suspended crane traveling mechanism of the present invention adopts a cooperation mode of an angle adjustment jack and a locking of a screw sleeve and a screw rod. During the adjustment process, the angle adjustment jack acts to adjust the traction angle. At the same time, the driving mechanism of the locking mechanism drives the screw sleeve to rotate, and the screw rod moves relatively, realizing the adjustment of the traction angle. After the adjustment is in place, the thread self-locking between the screw sleeve and the screw rod locks the traction angle, making the adjustment more convenient and labor-saving, with high self-locking reliability. Moreover, the entire traction top bracket and the downward moment of the traction top are borne by the locking mechanism, ensuring that the traction steel strand is not subjected to lateral pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 is Figure 1 an enlarged schematic structural diagram of part A in

[0020] Figure 3 is an enlarged schematic structural diagram of the locking mechanism in Embodiment 1 of the present invention;

[0021] Figure 4 is a schematic structural diagram of Embodiment 2 of the present invention;

[0022] Figure 5 is Figure 4 an enlarged schematic structural diagram of part B in

[0023] Figure 6 is an enlarged schematic structural diagram of the locking mechanism in Embodiment 2 of the invention.

[0024] Wherein: 1 - traction top bracket, 2 - traveling mechanism main body, 3 - adjustment mechanism, 4 - locking mechanism, 5 - main cable, 3a - chain block, 3b - steel wire rope, 3c - overhead crane, 4a - support plate, 4b - support block, 4c - fastening bolt, 4d - threaded hole, 31 - angle adjustment jack, 32 - inclination sensor, 41 - screw sleeve, 42 - screw rod, 43 - fixed bracket, 44 - turbine, 45 - worm, 46 - motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described below with reference to specific embodiments in the drawings.

[0026] A traction angle adjustment device of a cable-suspended crane traveling mechanism includes an adjustment mechanism 3 for adjusting the inclination angle of the traction top bracket 1 relative to the traveling mechanism main body 2, and a locking mechanism 4 for locking the inclination angle between the traction top bracket 1 and the traveling mechanism main body 2 is further provided therebetween.

[0027] The traction angle adjustment device of the cable-suspended crane traveling mechanism of the present invention, by adding the adjustment mechanism 3 and the locking mechanism 4, during the traveling of the cable-suspended crane, the inclination angle of the traction top bracket 1 relative to the traveling mechanism main body 2 can be adjusted by using the adjustment mechanism 3, so that the traction top bracket 1 can be rotationally adjusted to adapt to the change of the main cable 5 angle, realizing the adjustment of the traction traveling angle of the cable-suspended crane, ensuring that the traction jack can firmly hold all the traction steel strands. After the inclination angle is adjusted, the locking mechanism 4 is used to lock it, and then the traveling can be carried out, effectively improving the safety and working efficiency of the cable-suspended crane traveling on the main cable.

[0028] Embodiment 1

[0029] Refer to Figures 1-3 As shown, it is a specific embodiment of the present invention. In this embodiment, the adjustment mechanism 3 includes a chain block 3a and a steel wire rope 3b erected above the traveling mechanism main body 2. Among them, the steel wire rope 3b is one or more steel wire ropes 3b arranged above the main cable 5, and its two ends are connected to the saddle of the suspension bridge, playing the role of providing temporary tension for the chain block 3a. The chain block 3a is suspended on the steel wire rope 3b, and the hook of the chain block 3a hooks on the top of the traction top bracket 1, realizing the force transmission of the traction top bracket 1 to the steel wire rope 3b. And the chain block 3a is detachably connected to the traction top bracket 1 and the steel wire rope 3b in a suspended manner, which is convenient for transferring the position of the chain block 3a. The locking mechanism 4 includes a wedge block assembly, and the wedge block assembly is detachably installed on the traveling mechanism main body 2 below the traction top bracket 1.

[0030] The traction angle adjustment device of the cable-suspended crane traveling mechanism in this embodiment is composed of the cooperation of the chain block 3a, the steel wire rope 3b and the wedge block assembly. The traction angle adjustment process is as follows: First, use the chain block 3a to pull the traction top bracket 1 to rotate relative to the traveling mechanism main body 2. After the traction top bracket 1 rotates in place, then move the wedge block assembly to fit and lock with the bottom of the traction top bracket 1, realizing wedging the traction top bracket 1 to complete an angle adjustment.

[0031] Preferably, the adjustment mechanism 3 further includes a trolley 3c. The trolley 3c is slidably installed on the steel wire rope 3b. Specifically, the support pulley of the trolley 3c is slidably installed on the steel wire rope 3b, and the chain block 3a is suspended at the bottom of the trolley 3c. Suspending the chain block 3a on the trolley 3c is convenient for moving the chain block 3a to adjust its position, effectively reducing the working intensity and improving the working efficiency.

[0032] Preferably, the wedge block assembly includes a support plate 4a and a support block 4b. Among them, the support plate 4a is inclined and fixed to the end face of the walking mechanism main body 2. Specifically, the support plate 4a is inclined downward from top to bottom to one side of the traction top bracket 1. The support block 4b is installed on the support plate 4a through a fastening bolt 4c, and a plurality of threaded holes 4d adapted to the fastening bolt 4c are provided on the support plate 4a. During the adjustment of the traction angle, after the traction top bracket 1 rotates in place, loosen the fastening bolt 4c and move it along the support plate 4a to make the support block 4b abut against the bottom surface of the traction top bracket 1, and then use the fastening bolt 4c to fix the support block 4b, so as to realize the angle locking of the traction top bracket 1.

[0033] Embodiment 2

[0034] Refer to Figures 4-6 As shown, it is another specific embodiment of the present invention. In this embodiment, the adjustment mechanism 3 includes an angle adjustment jack 31. The two ends of the angle adjustment jack 31 are respectively hinged to the bottom of the traction top bracket 1 and the end face of the walking mechanism main body 2. The rotation of the traction top bracket 1 can be adjusted by the telescopic movement of the piston rod of the angle adjustment jack 31, so as to adjust the traction angle. The locking mechanism 4 includes a nut sleeve 41 and two screw rods 42. The thread directions of the two screw rods 42 are opposite, and one end of each of the two screw rods 42 is threadedly connected to the nut sleeve 41, and the other ends are respectively hinged to the upper part of the traction top bracket 1 and the upper part of the walking mechanism main body 2. A driving mechanism for driving its rotation is also provided on the nut sleeve 41. The nut sleeve 41 can be rotated by the driving mechanism to make the two screw rods 42 expand and contract, and cooperate with the angle adjustment hydraulic jack 31 to lock the position of the traction top bracket after the angle adjustment is in place.

[0035] In the traction angle adjustment device of the cable-supported crane walking mechanism in this embodiment, it adopts the cooperation mode of the angle adjustment jack 31 and the nut sleeve screw rod locking. During the adjustment process, the angle adjustment jack 31 acts to adjust the traction angle. At the same time, the driving mechanism of the locking mechanism 4 drives the nut sleeve 41 to rotate, and the relative movement of the adjustment screw rod 42 is adjusted to realize the adjustment of the traction angle. After the adjustment is in place, the thread between the nut sleeve 41 and the screw rod 42 is self-locked to lock the traction angle. Compared with the traction angle adjustment device of Embodiment 1, the adjustment is more convenient and labor-saving, the self-locking reliability is high, and the adjustment accuracy is higher, and the working efficiency is also higher. The entire traction top bracket and the torque under the traction top are borne by the locking mechanism, ensuring that the traction steel strand is not subjected to lateral pressure and further improving the construction safety.

[0036] Preferably, there are two sets of the screw sleeves 41 and the two screw rods 42, and the two sets of screw sleeves 41 and screw rods 42 are symmetrically arranged, and the driving mechanism is installed between the two sets of screw sleeves 41. The use of two sets of screw sleeves 41 and screw rods 42 is convenient for the installation of the driving mechanism on the one hand. On the other hand, the two sets of screw sleeves 41 and screw rods 42 are arranged between the traction top bracket 1 and the walking mechanism main body 2, which can make the force between the screw rod 42, the traction top bracket 1 and the walking mechanism main body 2 more uniform. Especially for the construction site with strong crosswind, the two sets of screw sleeves 41 and screw rods 42 can effectively improve the force intensity of the traction top bracket 1, thereby preventing the problem of yaw of the traction top bracket 1.

[0037] Preferably, the driving mechanism includes a fixed bracket 43, a turbine 44, a worm 45 and a motor 46. Among them, the two sets of screw sleeves 41 are rotatably installed at the bottom of the fixed bracket 43. Specifically, each set of screw sleeves 41 is connected to the fixed bracket 43 through two bearing seats. The worm 45 is rotatably installed at the bottom of the fixed bracket 43. Specifically, both ends of the worm 45 are connected to the fixed bracket 43 through bearings, and the worm 45 is perpendicular to the screw sleeve 41. A turbine 44 is fixed on the outer wall of each set of screw sleeves 41, and the worm 45 is meshed with the turbine 44. The motor 46 is installed on the fixed bracket 43, and the output end of the motor 46 is connected to the worm 45. When the motor 46 rotates, the screw sleeve 41 is driven to rotate through the worm and gear, and the screw rods 42 at both ends of each set of screw sleeves 41 can be driven to expand and contract. It should be noted that the output end of the motor 46 can be directly connected to the end of the worm 45. At this time, the motor 46 can be fixed on the fixed bracket 43 at one end of the worm 45. The motor 46 can also be fixed on the top of the fixed bracket 43, and the output end of the motor 46 can drive the worm to rotate through a bevel gear transmission mechanism to achieve driving, and its self-locking is more stable. The driving mechanism can also be in the form of a combination of a motor and a gear transmission mechanism, that is, a driven gear is fixed on the outer wall of each screw sleeve 41, the output end of the motor is connected to the driving wheel, and the driving wheel is meshed with the driven gear, which can also drive the two sets of screw sleeves 41 to rotate simultaneously. Obviously, the worm and gear method has more stable self-locking.

[0038] Preferably, the adjusting mechanism 3 further includes an inclination sensor 32 installed at the end of the walking mechanism main body 2. Among them, the inclination sensor 32, the angle adjusting jack 31, and the motor 46 are all electrically connected to the PLC control module of the cable-supported crane.

[0039] The traction angle adjustment device in this embodiment realizes completely autonomous control of the entire walking angle adjustment. First, the inclination sensor 32 installed on the walking mechanism body 2 measures the real-time walking angle change signal (change in the main cable angle), and then transmits the signal to the PLC control module in the control room. The PLC control module sends an instruction to drive the angle adjustment jack 31 to adjust the traction angle. The locking mechanism 4 receives the instruction at the same time, and the motor 46 installed thereon drives the worm gear to drive the screw sleeve 41 to rotate, so that the screw 42 extends or shortens to cooperate with the change of the traction angle. After it is in place, the thread self-locks to lock the adjusted traction angle, and the control is more convenient and accurate.

[0040] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A traction angle adjustment device for the traveling mechanism of a cable-suspended crane, characterized in that, it includes an adjustment mechanism (3) for adjusting the inclination angle of the traction top bracket (1) relative to the traveling mechanism main body (2). A locking mechanism (4) for locking the inclination angle between the traction top bracket (1) and the traveling mechanism main body (2) is further provided between the traction top bracket (1) and the traveling mechanism main body (2). The adjustment mechanism (3) includes an angle adjustment jack (31). Both ends of the angle adjustment jack (31) are hinged and connected to the bottom of the traction top bracket (1) and the end face of the traveling mechanism main body (2) respectively. The locking mechanism (4) includes a screw sleeve (41) and two screw rods (42). The thread directions of the two screw rods (42) are opposite, and one end of each of the two screw rods (42) is threadedly connected to the screw sleeve (41), and the other ends are respectively hinged and connected to the upper part of the traction top bracket (1) and the upper part of the traveling mechanism main body (2). A driving mechanism for driving its rotation is further provided on the screw sleeve (41); Through the addition of the adjustment mechanism (3) and the locking mechanism (4), during the traveling of the cable-suspended crane, the adjustment mechanism (3) can be used to adjust the inclination angle of the traction top bracket (1) relative to the traveling mechanism main body (2), so that the traction top bracket (1) can be rotationally adjusted to adapt to the change of the main cable angle, realizing the adjustment of the traction angle of the cable-suspended crane during traveling, ensuring that the traction jack can firmly hold all the traction steel strands, and locking with the locking mechanism (4) after the inclination angle is adjusted.

2. A traction angle adjustment device for the traveling mechanism of a cable-suspended crane according to claim 1, characterized in that, two groups of the screw sleeve (41) and the two screw rods (42) are provided, and the two groups of the screw sleeve (41) and the screw rods (42) are symmetrically arranged. The driving mechanism is installed between the two groups of screw sleeves (41).

3. A traction angle adjustment device for the traveling mechanism of a cable-suspended crane according to claim 2, characterized in that, the driving mechanism includes a fixed bracket (43), a worm gear (44), a worm (45) and a motor (46). Both groups of the screw sleeves (41) are rotatably installed at the bottom of the fixed bracket (43). The worm (45) is rotatably installed at the bottom of the fixed bracket (43). A worm gear (44) is fixed to the outer wall of each group of the screw sleeves (41). The worm (45) is meshed and connected with the worm gear (44). The motor (46) is installed on the fixed bracket (43), and the output end of the motor (46) is connected to the worm (45).

4. A traction angle adjustment device for the traveling mechanism of a cable-suspended crane according to claim 3, characterized in that, the adjustment mechanism (3) further includes an inclination sensor (32) installed at the end of the traveling mechanism main body (2). The inclination sensor (32), the angle adjustment jack (31) and the motor (46) are all electrically connected to the PLC control module of the cable-suspended crane.

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