Balance crane

Abstract

The utility model discloses a balance crane, which is used for clamping, releasing and transferring cable rollers, and comprises a mounting base, a rotary driving mechanism, a rotary mounting seat, a horizontal rotary suspension arm mechanism, a lifting hook mechanism, a suspension wire mechanism and a clamp mechanism, according to the balance crane, through the multi-dimensional movement mechanism, the precise transmission system, the self-adaptive clamp and the modular design, the material carrying efficiency, precision and reliability are remarkably improved, meanwhile, the maintenance cost and the operation difficulty are reduced, and the balance crane is particularly suitable for the automatic transfer scene of cylindrical workpieces such as mooring ropes and rollers; and a plurality of technical problems in the prior art are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology of balancers, specifically to balancers. Background Technology

[0002] In industrial production and logistics warehousing, there is a widespread demand for material handling and hoisting. Traditional handling equipment such as cranes and electric hoists have limitations in handling medium-weight items in multi-variety, small-batch production. They are difficult to mechanize on production lines, inefficient, unsuitable for high-precision operations, and have limited directional movement. Manual handling is not only time-consuming and unsafe but also harms worker health. The balance crane emerged to address this need. It uses a unique screw lifting mechanism to replace manual lifting of heavy objects, balancing gravity for smooth movement and less effort, significantly reducing operator workload and improving efficiency. With the increasing level of industrial automation, the application scenarios for balance cranes are becoming more widespread, and the requirements for their performance and reliability are also increasing, prompting continuous development and improvement of related technologies.

[0003] For example, some balance cranes that use drums and wire ropes to lift heavy objects have screws and other structures inside the drum to ensure that the axial position of the rope exit point remains unchanged. This results in an excessively large internal space in the drum, and the remaining space within the screw's stroke range cannot be utilized. The drive mechanism and transmission mechanism can only be set outside the drum, resulting in wasted space. Utility Model Content

[0004] The purpose of this invention is to provide a balance crane to solve the technical problems of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a balancing crane, used for clamping, releasing, and transferring cable rollers, the balancing crane comprising:

[0006] Mounting base 1, one end of which is fixedly installed on the ground;

[0007] Rotation drive mechanism 2 is used to complete the rotation of the entire balance crane. The rotation drive mechanism 2 is located on the other end of the mounting base 1.

[0008] Rotary mounting base 3 is fixedly mounted on rotary drive mechanism 2;

[0009] A horizontal rotating boom mechanism 4 is used to balance the rotation of the boom of the crane on a horizontal plane. One end of the horizontal rotating boom mechanism 4 is fixedly installed on the rotating mounting base 3.

[0010] The hook mechanism 5 is located below the other end of the horizontal rotating boom mechanism 4;

[0011] The suspension mechanism 6 is used to raise and lower the hook mechanism 5; one end of the suspension mechanism 6 is fixedly installed on the horizontal rotating boom mechanism 4, and the other end is connected to the hook mechanism 5.

[0012] The clamping mechanism 7, which is used to grip and release the cable roller, is mounted on the hook mechanism 5.

[0013] Furthermore, the rotation drive mechanism 2 includes:

[0014] The mounting cylinder 201 has one end fixedly mounted on the mounting base 1;

[0015] The rotating body 202 has one end movably connected to the mounting cylinder 201 and the other end fixedly connected to the rotating mounting base 3;

[0016] The rotating disk 203 is fixedly mounted on the rotating body 202;

[0017] Rotation drive motor 204 is fixedly mounted on the side surface of mounting cylinder 201;

[0018] The drive wheel 205 is fixedly mounted on the drive end of the rotation drive motor 204;

[0019] Driven wheel 206 is fixedly mounted on rotating disk 203;

[0020] Drive pulley 207 is mounted on drive drive pulley 205 and drive driven pulley 206;

[0021] The rotation drive motor 204 drives the drive drive wheel 205 and the drive driven wheel 206 to move, which in turn drives the rotation mounting seat 3 on the rotating body 202 to rotate.

[0022] Furthermore, the horizontal rotating boom mechanism 4 includes:

[0023] The first boom 401 is fixedly mounted on the rotating mounting base 3;

[0024] Horizontal rotating mechanism 402;

[0025] The second boom 403 has one end movably connected to one end of the first boom 401 via a horizontal rotating mechanism 402;

[0026] Specifically, the rotation of the horizontal rotation mechanism 402 causes the second boom 403 to rotate 360 ​​degrees around one end of the first boom 401. 0 Horizontal rotation.

[0027] Furthermore, the horizontal rotation mechanism 402 includes:

[0028] The mounting cylinder 4021 is fixedly mounted on one end face of the first boom 401;

[0029] The rotating shaft 4022 is mounted in the mounting cylinder 4021 at both ends via bearings.

[0030] Rotary disk 4023, which is mounted on rotating shaft 4022;

[0031] A rotary drive motor 4024 is fixedly mounted on the first boom 401 via a mounting bracket;

[0032] The rotating drive wheel 4025 is fixedly mounted on the drive end of the rotating drive motor 4024;

[0033] Rotary driven wheel 4026 is fixedly mounted on rotary disk 4023;

[0034] A rotating pulley 4027 is mounted on a rotating driving pulley 4025 and a rotating driven pulley 4026;

[0035] A set of connecting plates 4028, one end of which is fixedly installed on both ends of the rotating shaft 4022, and the other end is fixedly connected to the upper and lower sides of the second boom 403.

[0036] Furthermore, the hook mechanism 5 includes:

[0037] Lifting mounting bracket 501;

[0038] The hook 502 is fixedly installed at the lower end of the lifting mounting base 501;

[0039] The limit spring 503 is fixedly installed on the upper end of the hoisting mounting base 501.

[0040] Furthermore, the lifting mechanism 6 includes a take-up mechanism 601, which is fixedly installed on the other end of the first boom 401;

[0041] A set of guide wheels 602 are fixedly mounted on the connecting plate 4028;

[0042] End guide seat 603, which is installed on the other end of the second boom 403;

[0043] End guide wheel 604, which is mounted on end guide seat 603;

[0044] Suspension wire 605;

[0045] One end of the lifting line 605 is fixedly wound around the take-up machine 601, and the other end extends out of the take-up machine 601, passes through a set of guide wheels 602 and the end guide wheel 604 in sequence, and is fixedly connected to the lifting mounting base 501.

[0046] Furthermore, the clamping mechanism 7 includes:

[0047] A hollow sliding beam 701, wherein a plurality of through slots 702 are provided along the length direction;

[0048] At least two sliding rods 703 are located inside the hollow sliding beam 701; each of the sliding rods 703 is provided with a plurality of through holes 704 along its length.

[0049] At least one set of clamping arms 705 are respectively installed on the through holes 704 of the corresponding sliding rods 703 by positioning pins;

[0050] At least two sets of transmission beams 706, with one end of each set of transmission beams 706 hinged to each other;

[0051] At least two sets of X-type transmission beams 707 are connected at the middle of the two sets of X-type transmission beams 707, one end of which is hinged to the other end of the corresponding transmission beam 706, and the other end of which is movably installed on the through hole 704 of the corresponding sliding rod 703.

[0052] Hook 708, one end of which is movably installed at the hinge joint of one end of transmission beam 706, and hook 502 is hung on hook 708;

[0053] When the hook 502 pulls the hook 708 upward, the two sets of transmission beams 706 move upward, causing one end of the X-type transmission beam 707 to move upward, causing the other end of the X-type transmission beam 707 to pull the two sliding rods 703 to move inward along the length of the hollow sliding beam 701, thereby causing a set of clamping arms 705 to move inward, completing the clamping of both ends of the cable roller.

[0054] When the hook 502 pulls the hook 708 downward, the two sets of transmission beams 706 move downward, causing one end of the X-type transmission beam 707 to move downward, which in turn causes the other end of the X-type transmission beam 707 to pull the two sliding rods 703 outward along the length of the hollow sliding beam 701, thereby causing a set of clamping arms 705 to move outward, thus completing the release of both ends of the cable roller.

[0055] In the above technical solution, the balancer significantly improves the efficiency, accuracy and reliability of material handling through multi-dimensional motion mechanism, precision transmission system, adaptive clamp and modular design, while reducing maintenance costs and operation difficulty. It is especially suitable for automated transfer scenarios of cylindrical workpieces such as cables and rollers, and effectively solves many technical problems in the existing technology. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0057] Figure 1 This is a structural schematic diagram of a balance crane.

[0058] Figure 2 This is a schematic diagram of the rotation drive mechanism.

[0059] Figure 3 This is a schematic diagram of a horizontal rotating boom mechanism.

[0060] Figure 4 This is a schematic diagram of the hook mechanism.

[0061] Figure 5 This is a schematic diagram of the suspension wire mechanism.

[0062] Figure 6 This is a schematic diagram of the end guide seat.

[0063] Figure 7 for Figure 6 AA section diagram.

[0064] Figure 8 This is a schematic diagram of the clamping mechanism.

[0065] Explanation of reference numerals in the attached figures:

[0066] 1. Mounting base; 2. Rotary drive mechanism; 201. Mounting cylinder; 202. Rotating body; 203. Rotating disk; 204. Rotary drive motor; 205. Drive driving wheel; 206. Drive driven wheel; 207. Drive pulley; 3. Rotary mounting seat; 4. Horizontal rotating boom mechanism; 401. First boom; 402. Horizontal rotating mechanism; 4021. Mounting shaft cylinder; 4022. Rotating shaft; 4023. Rotating disk; 4024. Rotary drive motor; 4025. Rotary driving wheel; 4026. Rotary driven wheel; 4 027. Rotating pulley; 4028. Connecting plate; 403. Second boom; 5. Hook mechanism; 501. Lifting mounting base; 502. Hook; 503. Limiting spring; 6. Wire lifting mechanism; 601. Wire take-up machine; 602. Guide wheel; 603. End guide seat; 604. End guide wheel; 605. Wire lifting; 7. Clamping mechanism; 701. Hollow sliding beam; 702. Through slot; 703. Sliding rod; 704. Through hole; 705. Clamping arm; 706. Transmission beam; 707. Type X transmission beam; 708. Hook. Detailed Implementation

[0067] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0068] like Figures 1-8 As shown, a balancing crane is used for clamping, releasing, and transferring cable rollers. The balancing crane includes:

[0069] Mounting base 1, one end of which is fixedly installed on the ground;

[0070] Rotation drive mechanism 2 is used to complete the rotation of the entire balance crane. The rotation drive mechanism 2 is located on the other end of the mounting base 1.

[0071] Furthermore, the rotation drive mechanism 2 includes:

[0072] The mounting cylinder 201 has one end fixedly mounted on the mounting base 1;

[0073] The rotating body 202 has one end movably connected to the mounting cylinder 201 and the other end fixedly connected to the rotating mounting base 3;

[0074] The rotating disk 203 is fixedly mounted on the rotating body 202;

[0075] Rotation drive motor 204 is fixedly mounted on the side surface of mounting cylinder 201;

[0076] The drive wheel 205 is fixedly mounted on the drive end of the rotation drive motor 204;

[0077] Driven wheel 206 is fixedly mounted on rotating disk 203;

[0078] Drive pulley 207 is mounted on drive drive pulley 205 and drive driven pulley 206;

[0079] The rotation drive motor 204 drives the drive drive wheel 205 and the drive driven wheel 206 to move, which in turn drives the rotation mounting seat 3 on the rotating body 202 to rotate.

[0080] Specifically, the basic component of the balancer is the mounting base 1, which acts as the "foundation" of the entire equipment. One end is firmly connected to the ground via high-strength anchor bolts. During the pouring of the ground foundation, bolt holes are precisely pre-drilled and filled with high-strength grout to ensure that the mounting base 1 can withstand various loads and torques during equipment operation, providing solid and stable support for the balancer.

[0081] The core component enabling the balancer to rotate flexibly is the rotation drive mechanism 2. This mechanism is installed at the other end of the mounting base 1 and is responsible for driving the balancer to rotate freely 360 degrees, enabling the equipment to efficiently transfer cable rollers between different workstations.

[0082] The rotary drive mechanism 2 has a precise and complex structure, with its primary component being the mounting cylinder 201. The mounting cylinder 201 is a hollow cylinder forged from high-strength alloy steel, possessing excellent strength and toughness. One end is securely connected to the mounting base 1 by welding. The welding process employs multi-layer, multi-pass welding to ensure the weld quality meets first-class standards and can withstand long-term alternating loads. The mounting cylinder 201 also features a high-precision guide groove inside, providing precise guidance for the installation and movement of subsequent components.

[0083] The rotating body 202, as a key transmission component for achieving rotation, is movably connected at one end to the mounting cylinder 201 via a precision bearing assembly. The bearing assembly uses double-row angular contact ball bearings, capable of simultaneously withstanding radial and axial loads, ensuring smooth rotation and low friction of the rotating body 202. The other end of the rotating body 202 is fixedly connected to the rotating mounting base 3 via high-strength bolts. The bolt connection employs a double anti-loosening measure using both anti-loosening nuts and spring washers to prevent loosening during equipment operation. The surface of the rotating body 202 undergoes a special heat treatment process, enhancing its wear resistance and fatigue resistance.

[0084] The rotating disk 203 is fixedly mounted on the rotating body 202. It adopts a disc-shaped structure and is made of aluminum alloy, which reduces the overall weight while ensuring strength. Multiple positioning holes are evenly distributed on the edge of the rotating disk 203. These positioning holes are used to install the drive wheel 206, ensuring that the drive wheel 206 is accurately positioned on the rotating disk 203 and guaranteeing the accuracy of transmission.

[0085] The rotary drive motor 204 is the power source for the entire rotary drive mechanism 2. It is a high-torque, low-speed servo motor that can precisely control the rotation speed and angle according to actual operating requirements. The rotary drive motor 204 is fixedly mounted on the side surface of the mounting cylinder 201 by a specially designed motor bracket. The motor bracket is isolated from the mounting cylinder 201 by shock-absorbing rubber pads, which effectively reduces the vibration and noise generated during motor operation and improves the comfort and stability of equipment operation.

[0086] The drive pulley 205 is directly fixedly mounted on the drive end of the rotary drive motor 204, and the two are connected by a key to achieve reliable transmission. The surface of the drive pulley 205 is specially toothed, which can provide greater friction when it is engaged with the drive pulley 207 to prevent slippage.

[0087] The driven wheel 206 is fixedly mounted on the rotating disk 203, and its structure matches that of the driving wheel 205, also having a special tooth profile. The driven wheel 206 and the rotating disk 203 are interference-fitted and further secured by a locating pin to ensure that no relative displacement occurs during high-speed rotation.

[0088] The drive pulley 207, serving as the transmission medium, is made of high-strength rubber and has high-strength fiber cords embedded inside, providing excellent flexibility and tensile strength. The drive pulley 207 is tightly fitted onto the drive drive pulley 205 and the drive driven pulley 206, forming a complete transmission system. When the drive motor 204 starts, it drives the drive drive pulley 205 to rotate. The drive drive pulley 205 transmits power to the drive driven pulley 206 via the drive pulley 207. The drive driven pulley 206 then drives the rotating disk 203 and the rotating body 202 to rotate together, thereby rotating the rotating mounting base 3. Ultimately, this drives the entire balance crane to complete its rotation, providing flexible angle adjustment for the cable rollers.

[0089] The balancer includes: a rotating mounting base 3, which is fixedly mounted on the rotating drive mechanism 2;

[0090] The balancing crane includes a horizontal rotating boom mechanism 4, which is used for rotating the boom of the balancing crane on a horizontal plane. One end of the horizontal rotating boom mechanism 4 is fixedly mounted on a rotating mounting base 3.

[0091] Furthermore, the horizontal rotating boom mechanism 4 includes:

[0092] The first boom 401 is fixedly mounted on the rotating mounting base 3;

[0093] Horizontal rotating mechanism 402;

[0094] The second boom 403 has one end movably connected to one end of the first boom 401 via a horizontal rotating mechanism 402;

[0095] Specifically, the rotation of the horizontal rotation mechanism 402 causes the second boom 403 to rotate 360 ​​degrees around one end of the first boom 401. 0 Horizontal rotation.

[0096] Specifically, the first boom 401 serves as the basic support structure of the horizontal rotating boom mechanism 4. The first boom 401 adopts a box-section design and is welded from high-strength low-alloy steel plates. Internally, it is equipped with reinforcing ribs, forming a grid-like support structure that reduces weight while ensuring sufficient bending stiffness. One end of the first boom 401 is rigidly connected to the rotating mounting base 3 via a flange. The connection surface is precision-machined to ensure a precise fit, secured with high-strength bolts, and equipped with anti-loosening washers to prevent loosening.

[0097] As the core component for realizing the rotation function, the horizontal rotation mechanism 402 adopts a closed transmission design, which is effectively dustproof and waterproof, and is suitable for various industrial environments. This mechanism will be described in detail below.

[0098] The second boom, 403, is the component that directly bears the lifting load. It adopts a variable cross-section design, with a larger cross-section at the root to withstand greater bending moments and a gradually narrowing end to reduce weight. Guide rail structures are provided on its upper and lower surfaces for mounting clamping devices and a traveling mechanism. The second boom 403 is movably connected to the first boom 401 via a horizontal rotation mechanism 402, forming a rotatable cantilever structure.

[0099] Furthermore, the horizontal rotation mechanism 402 includes:

[0100] The mounting cylinder 4021 is fixedly mounted on one end face of the first boom 401;

[0101] The rotating shaft 4022 is mounted in the mounting cylinder 4021 at both ends via bearings.

[0102] Rotary disk 4023, which is mounted on rotating shaft 4022;

[0103] A rotary drive motor 4024 is fixedly mounted on the first boom 401 via a mounting bracket;

[0104] The rotating drive wheel 4025 is fixedly mounted on the drive end of the rotating drive motor 4024;

[0105] Rotary driven wheel 4026 is fixedly mounted on rotary disk 4023;

[0106] Rotating pulley 4027 is mounted on rotating drive pulley 4025 and rotating driven pulley 4026;

[0107] A set of connecting plates 4028, one end of which is fixedly installed on both ends of the rotating shaft 4022, and the other end is fixedly connected to the upper and lower sides of the second boom 403.

[0108] Specifically, the mounting cylinder 4021 is the basic support component of the horizontal rotation mechanism 402, and is a hollow cylindrical structure manufactured using a forging process. Its inner wall is precision ground to a surface roughness of Ra0.8μm, providing precise installation positioning for the bearings. The mounting cylinder 4021 is fixedly connected to the end face of the first boom 401 via an annular flange. The flange connection surface is provided with a sealing groove, and an O-ring seal is installed to prevent dust and moisture from entering the interior.

[0109] The rotating shaft 4022 is made of high-strength alloy steel, and its surface is quenched and tempered to a hardness of HRC45-50, exhibiting excellent wear resistance and fatigue resistance. Both ends of the rotating shaft 4022 are mounted within the mounting sleeve 4021 using high-precision angular contact ball bearings. The bearings are installed in pairs back-to-back, capable of simultaneously bearing radial and bidirectional axial loads. To ensure rotational accuracy, the bearings are pre-tightened after installation, with the pre-tightening force precisely controlled by spring washers.

[0110] The rotating disk 4023 is an aluminum alloy casting with a lightweight spoke-type structure design. Its central hole is interference-fitted with the rotating shaft 4022, and torque is transmitted via a flat key, ensuring synchronous rotation between the rotating disk 4023 and the rotating shaft 4022. The circumferential surface of the rotating disk 4023 is machined with precise teeth for mounting the driven wheel 4026 and features multiple weight-reducing holes, minimizing rotational inertia while maintaining structural strength.

[0111] The rotary drive motor 4024 is a high-precision servo motor equipped with an absolute encoder, enabling angular positioning accuracy of ±0.1°. This motor features high starting torque and a wide speed range, with a rated speed of 1500 r / min. The rated power is selected based on the boom length and load weight. The rotary drive motor 4024 is fixed to the side of the first boom 401 via a dedicated motor mounting bracket. The mounting bracket employs a vibration-damping design to reduce the impact of motor vibration on the boom structure.

[0112] Both the rotary driving pulley 4025 and the rotary driven pulley 4026 adopt a synchronous belt pulley design with involute tooth profiles and are made of 45 steel with surface hardening treatment. The transmission ratio of the two pulleys is designed according to the rotational speed requirements, typically between 1:3 and 1:5, to achieve a suitable reduction ratio and torque amplification effect. The rotary driving pulley 4025 is fixed to the output shaft of the rotary drive motor 4024 via a key connection, while the rotary driven pulley 4026 is securely connected to the rotating disk 4023 via bolts.

[0113] The rotating pulley 4027 uses a high-strength synchronous belt with embedded fiberglass reinforced cords and an outer neoprene rubber coating. This synchronous belt features high tensile strength, low modulus of elasticity, and good wear resistance. Its tooth profile perfectly matches the pulley, ensuring no slippage during transmission. The tension of the synchronous belt is adjusted via a tension pulley mounted on an adjustable bracket on the first boom 401. The tension is adjusted to the design value using bolts.

[0114] The connecting plate 4028 is a pair of high-strength steel plates manufactured using a bending forming process, exhibiting excellent bending resistance. One end of the connecting plate 4028 is fixedly connected to both ends of the rotating shaft 4022 via an expansion sleeve. The expansion sleeve provides backlash-free torque transmission and facilitates installation and disassembly. The other end of the connecting plate 4028 is rigidly connected to the upper and lower surfaces of the second boom 403 via high-strength bolts, with locating pins at the connection point ensuring installation accuracy. This connection method allows the second boom 403 to rotate synchronously with the rotating shaft 4022, achieving horizontal rotational movement.

[0115] When the horizontal angle of the second boom 403 needs to be adjusted, the control system sends a command to the rotary drive motor 4024, which starts and drives the rotary drive wheel 4025 to rotate. The rotary drive wheel 4025 transmits power to the rotary driven wheel 4026 through the rotary pulley 4027, causing the rotary driven wheel 4026 to drive the rotary disk 4023 and the rotary shaft 4022 to rotate together. Since the connecting plate 4028 connects the rotary shaft 4022 and the second boom 403 as one unit, the second boom 403 rotates on the horizontal plane with the end of the first boom 401 as its axis. By precisely controlling the direction and speed of the rotary drive motor 4024, the second boom 403 can be positioned at any angle within a range of ±180°, meeting the hoisting requirements of the cable rollers at different positions.

[0116] This two-stage rotating structure (rotation drive mechanism 2 achieves overall rotation, and horizontal rotating boom mechanism 4 achieves partial boom rotation) gives the balancer excellent spatial operation flexibility, enabling it to quickly and accurately transfer cable rollers from one workstation to another, significantly improving production efficiency.

[0117] The balancing crane includes: a hook mechanism 5, which is located below the other end of the horizontal rotating boom mechanism 4;

[0118] Furthermore, the hook mechanism 5 includes:

[0119] Lifting mounting bracket 501;

[0120] The hook 502 is fixedly installed at the lower end of the lifting mounting base 501;

[0121] The limit spring 503 is fixedly installed on the upper end of the hoisting mounting base 501.

[0122] Specifically, the hook mechanism 5, as the terminal execution component that directly supports and lifts the cable rollers of the balance crane, is designed with safety, reliability, and ease of operation in mind. This mechanism is installed below the other end of the horizontal rotating boom mechanism 4, and through precise structural design and coordinated operation with the overall equipment, ensures stable clamping and release of the cable rollers during lifting.

[0123] The hook mechanism 5 adopts a modular design, connecting to the lower end of the second boom 403 of the horizontal rotating boom mechanism 4 via high-strength connectors. Its vertically downward extension allows the hook 502 to precisely align with the cable roller to be lifted, effectively reducing the risk of off-center loading during lifting. Simultaneously, the hook mechanism 5 is designed with an interface for automated clamping devices, facilitating the subsequent integration of intelligent gripping systems and enhancing the automation level of the equipment.

[0124] The lifting mounting base 501 is the core load-bearing component of the hook mechanism 5. It is cast from high-quality low-alloy high-strength steel and undergoes ultrasonic flaw detection to ensure that there are no internal cracks or other defects. Its shape is an inverted T-shape, with a wide upper surface designed to mate with the connecting seat below the second boom 403, secured by four sets of high-strength bolts. During bolt connection, a torque wrench is used to tighten to the specified torque, and thread-locking agent is used to prevent loosening. The lifting mounting base 501 has a reinforcing rib in the middle to enhance its bending and torsional resistance, and a vertically downward mounting hole at the bottom for fixing the hook 502. In addition, the upper end of the lifting mounting base 501 is designed with an annular groove for installing the limit spring 503. The inner wall of the annular groove is finely ground to ensure stable operation of the limit spring 503 after installation.

[0125] As a key component directly bearing the weight of the cable roller, hook 502 is forged from special alloy steel and tempered, achieving a surface hardness of HRC35-40, possessing excellent strength and toughness. Hook 502 features a C-shaped opening design with an anti-detachment pawl device. The pawl automatically resets via a torsion spring. When the hook engages the lifting ring of the cable roller, the pawl automatically engages, preventing accidental detachment and effectively improving safety during lifting. Hook 502 connects to the mounting hole at the lower end of the lifting base 501 via a pin, with cotter pins at both ends for anti-detachment locking. The mating area between the pin and hook 502 undergoes special surface treatment to reduce the coefficient of friction, allowing the hook to rotate freely and easily align with lifting points in different directions.

[0126] The limit spring 503 is a cylindrical helical compression spring made of 60Si2Mn spring steel. It undergoes high-pressure treatment and surface galvanizing for corrosion protection, resulting in excellent elasticity and fatigue resistance. The limit spring 503 is installed in the annular groove at the upper end of the lifting mounting base 501. Its upper end contacts the limit plate below the second boom 403, and its lower end fits tightly against the lifting mounting base 501. During lifting operations, when the cable rollers are subjected to unexpected impacts or sudden load changes, the limit spring 503 can absorb part of the impact force through compression deformation, acting as a buffer and shock absorber to prevent damage to the hook mechanism and the horizontal rotating boom mechanism due to instantaneous overload. Simultaneously, the preload of the limit spring 503 is precisely calculated and adjusted to ensure the stability of the hook mechanism under normal lifting conditions, preventing unnecessary swaying of the hook.

[0127] When hoisting the cable roller, the operator adjusts the position of the horizontal rotating boom mechanism 4 through the control system, aligning the hook 502 with the lifting ring of the cable roller. Once the hook 502 engages the lifting ring, the anti-detachment pawl automatically engages, completing the hooking action. During the lifting process, the lifting mounting base 501 transfers the weight of the cable roller to the horizontal rotating boom mechanism 4, and the limit spring 503 monitors and buffers any potential impact forces in real time. After the cable roller is hoisted to the target position, the operator releases the hook 502 through the control system, the anti-detachment pawl opens, and the hook 502 disengages from the lifting ring, completing one hoisting task. Throughout the process, the hook mechanism 5 works closely with other components of the balance crane to ensure the safe and efficient completion of the cable roller hoisting operation.

[0128] The balancing crane includes: a suspension line mechanism 6, which is used to raise and lower the hook mechanism 5; one end of the suspension line mechanism 6 is fixedly installed on the horizontal rotating boom mechanism 4, and the other end is connected to the hook mechanism 5;

[0129] Furthermore, the lifting mechanism 6 includes a take-up mechanism 601, which is fixedly installed on the other end of the first boom 401;

[0130] A set of guide wheels 602 are fixedly mounted on the connecting plate 4028;

[0131] End guide seat 603, which is installed on the other end of the second boom 403;

[0132] End guide wheel 604, which is mounted on end guide seat 603;

[0133] Suspension wire 605;

[0134] One end of the lifting line 605 is fixedly wound around the take-up machine 601, and the other end extends out of the take-up machine 601, passes through a set of guide wheels 602 and the end guide wheel 604 in sequence, and is fixedly connected to the lifting mounting base 501.

[0135] Specifically, the cable mechanism 6, as the core transmission component for realizing the vertical lifting and lowering of the hook mechanism 5, undertakes the crucial task of precisely lifting and lowering the cable rollers. Through ingenious mechanical transmission design, this mechanism forms a spatial linkage with the horizontal rotating boom mechanism 4, ensuring efficient and stable lifting operations in three-dimensional space. Its structural design fully considers load distribution, motion accuracy, and safety, providing a strong guarantee for the reliable operation of the balance crane.

[0136] The lifting mechanism 6 adopts a three-section layout of "drive-guide-connection". One end is firmly installed on the horizontal rotating boom mechanism 4, and the other end is rigidly connected to the hook mechanism 5, forming a closed-loop transmission system. The overall layout of the mechanism follows the principle of optimal mechanics, with the take-up machine 601 located at the other end of the first boom 401, utilizing the rigid structure of the boom to distribute the lifting load. The guide wheel system is arranged along the extension direction of the boom to ensure that the lifting line 605 maintains a straight trajectory during movement, avoiding wear and stress concentration caused by skewness. This design not only improves transmission efficiency but also reduces noise and vibration during equipment operation.

[0137] The take-up machine 601, serving as the power source for the lifting mechanism 6, utilizes a variable frequency speed-regulating electric winch with a built-in planetary gear reducer and electromagnetic brake. Its outer casing is made of high-strength cast steel in one piece, and it houses a high-precision drum. The drum's surface is machined with a special process to create spiral grooves, ensuring the lifting line 605 is neatly wound without tangling. The take-up machine 601 is fixedly connected to the end of the first boom 401 via a bottom flange, secured with high-strength bolts. Shock-absorbing rubber pads are added to the flange surface to effectively isolate vibrations generated during operation. The equipment is equipped with an overload protection device; when the lifting weight exceeds 110% of the rated load, the electromagnetic brake automatically engages, triggering an audible and visual alarm to ensure operational safety.

[0138] The guide wheel 602 consists of four steel pulleys supported by high-precision deep groove ball bearings, evenly distributed and mounted on the connecting plate 4028. Each pulley surface is coated with a polyurethane wear-resistant layer, which reduces the friction coefficient of the suspension line 605 and prevents wear on the wire rope surface. The installation angle of the guide wheel 602 is precisely calculated to form a smooth guiding path with the take-up machine 601 and the end guide wheel 604, ensuring the suspension line 605 remains stable during horizontal rotation. The pulley shaft is made of high-strength alloy steel, and a dust cover is installed at the shaft end to prevent dust and impurities from entering the bearing, extending its service life.

[0139] The end guide seat 603 is a box-shaped structure, assembled from high-strength steel plates using welding technology, with internal reinforcing ribs to enhance structural rigidity. It is bolted to the other end of the second boom 403, and the mounting surface is milled to ensure precise contact with the boom. A U-shaped groove is provided on the top of the guide seat 603 for mounting the end guide wheel 604. Adjusting bolts are installed within the groove to finely adjust the height and angle of the guide wheel, adapting to the guiding requirements of the lifting line under different working conditions.

[0140] The end guide wheel 604 adopts a double-wheel side-by-side design with a gap between the two wheels to effectively prevent the suspension line 605 from jumping out of the groove. The wheel uses a cast steel base with a ceramic coating process. The ceramic coating has extremely high hardness and wear resistance and can withstand high-frequency friction. The guide wheel 604 is mounted in the U-shaped groove of the end guide seat 603 via a mandrel. The mandrel is equipped with self-aligning roller bearings at both ends, allowing the guide wheel to automatically adjust its angle within a certain range to ensure that the suspension line 605 is always in the optimal stress state.

[0141] The 605 hoisting line uses 6×37+FC fiber core steel wire rope. This type of wire rope is characterized by good flexibility and strong anti-rotation ability, making it suitable for frequent winding and unwinding operations. The surface of the wire rope is galvanized, providing excellent corrosion resistance. One end is fixed to the drum of the take-up machine 601 via a wedge joint. The wedge joint is made of high-strength alloy steel and uses the self-locking principle of the wedge block to firmly lock the wire rope. The other end passes through the guide wheel system and is connected to the lifting ring on the top of the hoisting mounting base 501 using a braiding method. The braiding length is not less than 20 times the diameter of the wire rope, and a protective rope sleeve is added for protection to ensure the reliability of the connection.

[0142] When it is necessary to raise the cable roller, the control system sends a command to the take-up machine 601, the electric winch starts, and drives the drum to rotate clockwise. Through the wedge joint, the lifting line 605 is gradually wound onto the drum. During its movement, the lifting line 605 is guided by a set of guide wheels 602 and the end guide wheel 604, transmitting the vertical tension to the lifting mounting base 501, thereby driving the hook mechanism 5 to rise smoothly. The lowering process is the reverse: the drum rotates counterclockwise to release the lifting line 605, and the electromagnetic brake automatically adjusts the braking torque according to the descent speed to achieve uniform lowering. Throughout the entire lifting process, the guide wheel system maintains the straight-line trajectory of the lifting line 605, ensuring the safety and stability of the lifting operation.

[0143] The lifting mechanism 6 works in conjunction with the horizontal rotating boom mechanism 4 and the hook mechanism 5, enabling the balance crane to flexibly lift cable rollers in three-dimensional space. By precisely controlling the speed and direction of the take-up machine 601, combined with the angle adjustment of the horizontal rotating mechanism 402, the cable rollers can be accurately lifted to the target position, meeting the operational needs under complex working conditions.

[0144] The balancing crane includes: a clamping mechanism 7 for gripping and releasing cable rollers, which is mounted on a hook mechanism 5.

[0145] Furthermore, the clamping mechanism 7 includes:

[0146] A hollow sliding beam 701, wherein a plurality of through slots 702 are provided along the length direction;

[0147] At least two sliding rods 703 are located inside the hollow sliding beam 701; each of the sliding rods 703 is provided with a plurality of through holes 704 along its length.

[0148] At least one set of clamping arms 705 are respectively installed on the through holes 704 of the corresponding sliding rods 703 by positioning pins;

[0149] At least two sets of transmission beams 706, with one end of each set of transmission beams 706 hinged to each other;

[0150] At least two sets of X-type transmission beams 707 are connected at the middle of the two sets of X-type transmission beams 707, one end of which is hinged to the other end of the corresponding transmission beam 706, and the other end of which is movably installed on the through hole 704 of the corresponding sliding rod 703.

[0151] Hook 708, one end of which is movably installed at the hinge joint of one end of transmission beam 706, and hook 502 is hung on hook 708;

[0152] When the hook 502 pulls the hook 708 upward, the two sets of transmission beams 706 move upward, causing one end of the X-type transmission beam 707 to move upward, causing the other end of the X-type transmission beam 707 to pull the two sliding rods 703 to move inward along the length of the hollow sliding beam 701, thereby causing a set of clamping arms 705 to move inward, completing the clamping of both ends of the cable roller.

[0153] When the hook 502 pulls the hook 708 downward, the two sets of transmission beams 706 move downward, causing one end of the X-type transmission beam 707 to move downward, which in turn causes the other end of the X-type transmission beam 707 to pull the two sliding rods 703 outward along the length of the hollow sliding beam 701, thereby causing a set of clamping arms 705 to move outward, thus completing the release of both ends of the cable roller.

[0154] Specifically, the clamping mechanism 7, as the terminal execution component of the balancer, undertakes the core function of precisely gripping and releasing the cable rollers. This mechanism adopts a purely mechanical structure design, using a clever linkage transmission system to convert the vertical movement of the hook into the opening and closing action of the clamping arm, achieving reliable clamping of cable rollers of different specifications. This design not only simplifies the control system but also significantly improves operational stability and safety, making it particularly suitable for frequent lifting operations.

[0155] The clamping mechanism 7 adopts a modular design concept, achieving quick connection with the hook mechanism 5 via hook 708. Its overall symmetrical layout ensures force balance. Its core components are symmetrically distributed along the axis of the hollow sliding beam 701, forming a double-acting clamping system that can simultaneously apply uniform clamping force to both ends of the cable roller. The outer shell of the mechanism is made of high-strength aluminum alloy, ensuring structural strength while reducing its own weight and lowering the load requirements on the suspension mechanism 6.

[0156] The hollow sliding beam 701 is the basic support component of the clamping mechanism 7. It adopts a rectangular cross-section hollow steel tube structure, and its interior is precision-machined to ensure the smooth movement of the sliding rod 703. Multiple through slots 702 evenly distributed along its length not only reduce structural weight but also provide movement space for the locating pins and transmission components. The edges of the through slots 702 are rounded and inlaid with wear-resistant copper alloy bushings, effectively reducing frictional resistance and wear during sliding.

[0157] The sliding rod 703 is made of high-strength alloy steel, with a surface hardened and hard chrome plated to a hardness of HRC55-60, exhibiting excellent wear resistance and corrosion resistance. Multiple through holes 704 on the rod body are precision CNC machined, with hole spacing tolerance controlled within ±0.05mm, ensuring the installation accuracy of the clamping arm 705 and the X-type transmission beam 707. A self-lubricating slider is provided between the sliding rod 703 and the inner wall of the hollow sliding beam 701, further reducing sliding resistance and improving the mechanism's response speed.

[0158] The clamping arm 705 employs a dual-pivot lever structure design. Its clamping surface is inlaid with replaceable polyurethane anti-slip pads with finely serrated textures, providing sufficient friction to prevent cable roller slippage while avoiding damage to the roller surface. The clamping arm 705 has an opening angle range of 0°-60°, accommodating cable rollers of various sizes with diameters ranging from 150mm to 600mm. Each clamping arm 705 is connected to the sliding rod 703 via a high-strength locating pin. The locating pin features a tapered surface fit design, ensuring reliable connection and repeatability.

[0159] Both the transmission beam 706 and the X-type transmission beam 707 are made of high-strength steel plate by stamping, and have internal reinforcing ribs to improve bending resistance. One end of each transmission beam 706 is hinged via a spherical bearing, forming a movable V-shaped structure; the middle of the X-type transmission beam 707 is connected by a universal joint, allowing the two beams to rotate relative to each other in a plane. This design enables the mechanism to efficiently convert the vertical movement of the hook 502 into the horizontal movement of the sliding rod 703, achieving synchronous opening and closing of the clamping arm 705. All hinge points use self-lubricating bearings and are equipped with dustproof seals, reducing maintenance requirements.

[0160] The hook 708 is manufactured using a forging process, and the material is 42CrMo high-strength alloy steel. After tempering and surface nitriding, it possesses extremely high strength and toughness. A spring-loaded locking device is installed at the hook opening; when the hook 502 is properly engaged, the locking device automatically closes to prevent accidental disengagement. The hinge between the hook 708 and the transmission beam 706 uses a spherical bearing connection, allowing the hook to swing freely within a certain range, compensating for angular deviations during lifting and ensuring smooth force transmission.

[0161] When hook 502 pulls hook 708 upward, the two sets of transmission beams 706 move upward accordingly, and the V-shaped structure gradually closes. This action forces one end of the X-shaped transmission beam 707 to move upward, while the other end pulls the two sliding rods 703 inward along the hollow sliding beam 701 through the hinge point. Since the clamping arm 705 is fixedly connected to the sliding rods 703, the clamping arm 705 moves inward synchronously until it clamps both ends of the cable roller. During the clamping process, the cross angle of the X-shaped transmission beam 707 gradually decreases, forming a mechanical self-locking effect, ensuring that the clamping arm 705 will not loosen due to vibration or external interference during the hoisting process.

[0162] Conversely, when the hook 502 moves downward, the transmission beam 706 and the X-type transmission beam 707 move in opposite directions, the sliding rod 703 slides outward, the clamping arm 705 opens, and the cable roller is released. Throughout the process, the movement of the mechanism follows the parallelogram law, ensuring that the clamping arm 705 always maintains parallel movement and applies a uniform clamping force to the cable roller.

[0163] According to mechanical analysis, the clamping force of the clamping mechanism 7 has a non-linear relationship with the tension of the hook 502. In the initial stage of clamping, the clamping force increases rapidly with the increase of tension; after the clamping arm 705 contacts the cable roller, the rate of increase of the clamping force gradually decreases and eventually reaches a stable value. By optimizing the geometric parameters of the transmission beam, the clamping force generated by the mechanism under rated load can reach 3-5 times the tension of the hook, effectively ensuring the safety of the lifting process.

[0164] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A balancer, characterized in that, This balancing crane is used for clamping, releasing, and transferring cable rollers. The balancing crane includes: Mounting base (1), one end of which is fixedly installed on the ground; A rotation drive mechanism (2) is used to complete the rotation of the entire balance crane. The rotation drive mechanism (2) is located on the other end of the mounting base (1). Rotary mounting base (3) is fixedly mounted on the rotary drive mechanism (2); A horizontal rotating boom mechanism (4) is used to rotate the boom of a balancer on a horizontal plane. One end of the horizontal rotating boom mechanism (4) is fixedly mounted on a rotating mounting base (3). The hook mechanism (5) is located below the other end of the horizontal rotating boom mechanism (4); A suspension line mechanism (6) is used to raise and lower the hook mechanism (5); one end of the suspension line mechanism (6) is fixedly installed on the horizontal rotating boom mechanism (4), and the other end is connected to the hook mechanism (5); A clamping mechanism (7) is used to grip and release the cable rollers, which is mounted on a hook mechanism (5).

2. The balancer according to claim 1, characterized in that, The rotation drive mechanism (2) includes: The mounting cylinder (201) is fixedly mounted on the mounting base (1) at one end; The rotating body (202) has one end movably connected to the mounting cylinder (201) and the other end fixedly connected to the rotating mounting base (3); A rotating disk (203) is fixedly mounted on a rotating body (202); A rotation drive motor (204) is fixedly mounted on the side surface of the mounting cylinder (201); The drive wheel (205) is fixedly mounted on the drive end of the rotary drive motor (204); Driven wheel (206) is fixedly mounted on rotating disk (203); A drive pulley (207) is mounted on the drive drive pulley (205) and the drive driven pulley (206); The rotation drive motor (204) drives the drive drive wheel (205) and the drive driven wheel (206) to move, thereby driving the rotation of the rotating mounting seat (3) on the rotating body (202).

3. The balancer according to claim 2, characterized in that, The horizontal rotating boom mechanism (4) includes: The first boom (401) is fixedly mounted on the rotating mounting base (3); Horizontal rotation mechanism (402); The second boom (403) is movably connected at one end to the first boom (401) via a horizontal rotating mechanism (402); The rotation of the horizontal rotation mechanism (402) causes the second boom (403) to rotate 360 ​​degrees around one end of the first boom (401). 0 Horizontal rotation.

4. The balancer according to claim 3, characterized in that, The horizontal rotation mechanism (402) includes: The mounting cylinder (4021) is fixedly mounted on one end face of the first boom (401); A rotating shaft (4022) is mounted at both ends inside a mounting cylinder (4021) via bearings; A rotating disk (4023) is mounted on a rotating shaft (4022); A rotary drive motor (4024) is fixedly mounted on the first boom (401) via a mounting bracket (). A rotating drive wheel (4025) is fixedly mounted on the drive end of a rotating drive motor (4024); A driven wheel (4026) is rotated and is fixedly mounted on a rotating disk (4023); A rotating pulley (4027) is mounted on a rotating driving pulley (4025) and a rotating driven pulley (4026); A set of connecting plates (4028) are fixedly installed at one end on both ends of the rotating shaft (4022) and at the other end fixedly connected to the upper and lower sides of the second boom (403).

5. The balancer according to claim 4, characterized in that, The hook mechanism (5) includes: Lifting mounting bracket (501); The hook (502) is fixedly installed at the lower end of the lifting mounting base (501); The limiting spring (503) is fixedly installed on the upper end of the hoisting mounting base (501).

6. The balancer according to claim 5, characterized in that, The wire lifting mechanism (6) includes: a wire take-up machine (601), which is fixedly installed on the other end of the first boom (401); A set of guide wheels (602) are fixedly mounted on the connecting plate (4028); An end guide seat (603) is mounted on the other end of the second boom (403); An end guide wheel (604) is mounted on an end guide seat (603); Suspension wire (605); One end of the lifting line (605) is fixedly wound around the take-up machine (601), and the other end extends out from the take-up machine (601), passes through a set of guide wheels (602) and end guide wheels (604) in sequence, and is fixedly connected to the lifting mounting base (501).

7. The balancer according to claim 6, characterized in that, The clamping mechanism (7) includes: A hollow sliding beam (701) is provided with a plurality of through slots (702) along its length; At least two sliding rods (703) are located inside the hollow sliding beam (701); each of the sliding rods (703) has a plurality of through holes (704) along its length. At least one set of clamping arms (705) are respectively installed on the through holes (704) of the corresponding sliding rods (703) by positioning pins; At least two sets of transmission beams (706), one end of the two sets of transmission beams (706) being hinged to each other; At least two sets of X-type transmission beams (707) are connected at the middle of the two sets of X-type transmission beams (707), one end of which is hinged to the other end of the corresponding transmission beam (706), and the other end of which is movably installed on the through hole (704) of the corresponding sliding rod (703). A hook (708) is movably mounted at one end of a transmission beam (706) at a hinge joint, and the hook (502) is hung on the hook (708); When the hook (502) pulls the hook (708) upward, the two sets of transmission beams (706) move upward, causing one end of the X-type transmission beam (707) to move upward, causing the other end of the X-type transmission beam (707) to pull the two sliding rods (703) to move inward along the length of the hollow sliding beam (701), which in turn causes a set of clamping arms (705) to move inward, thus completing the clamping of both ends of the cable roller. When the hook (502) pulls the hook (708) downward, the two sets of transmission beams (706) move downward, causing one end of the X-type transmission beam (707) to move downward, causing the other end of the X-type transmission beam (707) to pull the two sliding rods (703) outward along the length of the hollow sliding beam (701), which in turn causes a set of clamping arms (705) to move outward, thus completing the release of both ends of the cable roller.

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