Crane with boom crane

Abstract

The crane comprises two groups of longitudinal beams which are arranged in parallel, a damping frame is arranged at the upper ends of the longitudinal beams, the left end and the right end of the damping frame are respectively connected with the corresponding longitudinal beams in a front-back sliding mode through electric sliding rails, and the upper end of the damping frame is connected with a main hoisting mechanism in a left-right sliding mode. A hanging beam is arranged on the right side of the damping frame; the section of the hanging beam is I-shaped, the upper end of the hanging beam is connected with the right portion of the lower end of the damping frame in a left-right sliding mode, an auxiliary hoisting mechanism is arranged on the right portion of the lower end of the hanging beam and used for carrying heavy objects to the set height, and the hoisting range of the crane with the boom crane can be expanded by additionally installing the hanging beam.

Description

Technical Field

[0001] This utility model relates to lifting devices, and more particularly to a crane containing a boom crane. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, or material yards for material handling. The bridge frame of a bridge crane runs longitudinally along rails laid on elevated structures on both sides, allowing the crane to fully utilize the space beneath the bridge frame for material handling without being obstructed by ground equipment. Bridge cranes are also the most widely used and numerous type of lifting machinery.

[0003] The bridge structure of a bridge crane consists of main beams and end beams, and is divided into two types: single main beam bridge cranes and double beam bridge cranes. A single main beam bridge crane consists of a single main beam and end beams located on both sides of the span, while a double beam bridge crane consists of two main beams and end beams. Usually, the distance between the end beams is a fixed value. In engineering operations, it is often time-consuming and labor-intensive to expand the lifting range of the crane by changing the distance between the end beams.

[0004] The applicant's known hoisting mechanism (CN 107311064 A) of a crane with a boom includes a drum, a motor, and a reducer. Both the motor drive shaft and the drum shaft extend beyond the left end of the reducer. The extended ends of the motor drive shaft and the drum shaft are respectively equipped with a shaft brake wheel and a roller brake wheel. A differentiated dual braking mechanism is installed on the shaft brake wheel and the roller brake wheel. The differentiated dual braking mechanism includes a base. A first bracket and a second bracket are provided at both ends of the top surface of the base. The second bracket is located inside the first bracket. A hydraulic cylinder is installed between the two second brackets. The top of the hydraulic cylinder is hinged to two connecting rods via a telescopic rod. This differentiated dual braking mechanism makes the motor more stable in the stopped state during hoisting, preventing the braking force of the motor from causing the steel cable to swing. Simultaneously, the dual braking measures ensure braking stability and are more suitable for the stable lifting of heavier objects.

[0005] The above application has the following problems:

[0006] 1. In the above application, the fixed installation of the first bracket and the second bracket restricts the lifting range of the crane containing the jib crane, and the working range of the crane containing the jib crane cannot meet more application scenarios.

[0007] 2. The above application uses complex mechanical structures such as axle brake wheels and roller brake wheels for braking control, which is complex and difficult to operate, making it unfavorable for lifting operations. Utility Model Content

[0008] The purpose of this invention is to provide a crane with a jib crane, which can expand the lifting range of the crane by adding a lifting beam.

[0009] The present invention adopts the following technical solution:

[0010] A crane with a boom includes two sets of parallel longitudinal beams. A damping frame is provided at the upper end of the longitudinal beams. The left and right ends of the damping frame are respectively slidably connected to the corresponding longitudinal beams via electric slide rails. A main lifting mechanism is slidably connected to the upper end of the damping frame. A lifting beam is provided on the lower right side of the damping frame. The lifting beam has an "I" shaped cross section. The upper end of the lifting beam is slidably connected to the lower right side of the damping frame. An auxiliary lifting mechanism is provided on the lower right side of the lifting beam. The auxiliary lifting mechanism is used to move heavy objects to a set height.

[0011] Furthermore, a pulley section is provided between the damping frame and the suspension beam. The pulley section includes a support guide rail fixed to the lower end face of the damping frame. The support guide rail has an "I"-shaped cross-section, and a pair of first guide wheels are symmetrically arranged in the front and rear grooves of the "I"-shaped support guide rail. A pair of second guide wheels are correspondingly arranged below the two sets of first guide wheels, and the two sets of second guide wheels are respectively located in the front and rear grooves in the middle of the "I"-shaped suspension beam. A pair of support plates are symmetrically arranged on the outer sides of the two sets of first guide wheels and the two sets of second guide wheels. The axles of the two sets of first guide wheels pass through the upper part of the corresponding support plates and are rotatably connected to the support plates. The axles of the two sets of second guide wheels pass through the lower part of the corresponding support plates and are rotatably connected to the support plates. The middle of the two sets of support plates is fixedly connected by a connecting rod.

[0012] Furthermore, a braking unit is also provided on the left side of the lifting beam. The braking unit includes a support seat and a pair of friction wheels symmetrically arranged on the front and rear sides of the support seat. The right side of the support seat is fixedly connected to the left end face of the lifting beam. A through groove is opened at the upper part of the support plate, and a compression spring is installed in the through groove. The lower end of the compression spring is fixedly connected to the bottom of the through groove. A support slider is fixedly installed at the upper end of the compression spring. The support slider is slidably arranged in the through groove. A friction wheel shaft passes through the support slider along the front and rear. The front and rear ends of the friction wheel shaft are rotatably connected to the corresponding friction wheels. Two sets of brake pads are correspondingly arranged on the front and rear sides of the lower part of the support slider. A set of support rods passes through the left and right ends of each set of brake pads. The inner ends of the support rods are fixedly connected to the support plate. Each set of brake pads is slidably connected to the corresponding support rod. The inner side of both sets of brake pads is provided with an inwardly inclined first slope. The outer side of both sets of brake pads is provided with a corresponding inner side of the friction wheel.

[0013] Furthermore, the lower part of the two sets of support sliders is provided with a second inclined surface that matches the first inclined surface, corresponding to the inner side of the brake pad.

[0014] Furthermore, the braking unit also includes damping cylinders respectively disposed on the outer sides of the friction wheels on both sides. The axis of each set of damping cylinders is arranged on the left and right. Guide posts are fixedly inserted at the eccentric positions on the outer sides of the two sets of friction wheels. The left end of each set of damping cylinders is rotatably connected to the guide post on the corresponding side, and the right end of each set of damping cylinders is rotatably connected to the wheel axle of the second guide wheel on the corresponding side.

[0015] Furthermore, the damping cylinder includes a sleeve disposed on the left side, a first positioning ring fixedly disposed on the left end of the sleeve, the first positioning ring rotatably sleeves the guide post, the right end of the sleeve is open, and a piston is coaxially inserted into the inner cavity, and a second positioning ring is fixedly disposed on the right end of the piston, which rotatably sleeves the axle of the second guide wheel.

[0016] Furthermore, the friction wheel is uniformly provided with rubber blocks in the circumferential direction.

[0017] Furthermore, a first limiting plate is provided between each group of first guide wheels and the support plate. The inner side of each group of first limiting plates is coaxially fixed with the outer side of the corresponding first guide wheel, and the first limiting plate is rotatably connected to the wheel axle of the first guide wheel.

[0018] Furthermore, a second limiting disc is provided between each group of second guide wheels and the support plate. The inner side of each group of second limiting discs is coaxially fixed with the outer side of the corresponding second guide wheel, and the second limiting disc is rotatably connected to the wheel axle of the second guide wheel.

[0019] Furthermore, an operating room is provided in front of the supporting guide rail, and the operating room is connected to the upper side of the damping frame via an escalator.

[0020] This utility model, by setting up a lifting beam, can significantly increase the left and right working range of a crane containing a jib crane;

[0021] This utility model, by setting a pulley section, enables convenient installation of a crane containing a boom, and allows it to move left and right;

[0022] This utility model, by setting a braking part, can achieve the positioning of the auxiliary lifting mechanism by increasing the damping between the support guide rail and the lifting beam when the auxiliary lifting mechanism is under load.

[0023] By incorporating a damping cylinder, this invention enables the braking unit to generate minimal damping between the support guide rail and the lifting beam when the auxiliary lifting mechanism is unloaded. This ensures low-speed movement of the support guide rail and the lifting beam, thereby improving the safety of the lifting operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main hoisting mechanism in this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the first guide wheel in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the operating room in this utility model;

[0027] Figure 4 This is a schematic diagram of the friction wheel in this utility model;

[0028] Figure 5 This is a schematic diagram of the through groove structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the first inclined surface in this utility model.

[0030] In the diagram, 1. Longitudinal beam; 2. Damping frame; 3. Electric slide rail; 4. Main lifting mechanism; 5. Lifting beam; 6. Auxiliary lifting mechanism; 7. Pulley section; 8. Support guide rail; 9. First guide wheel; 10. Second guide wheel; 11. Support plate; 12. Connecting rod; 13. Friction wheel; 14. Support slider; 15. Compression spring; 16. Brake pad; 17. First inclined plane; 18. Damping cylinder; 19. Guide column; 20. Sleeve; 21. First positioning ring; 22. Piston; 23. Second positioning ring; 24. Operating room; 25. Escalator; 26. Through groove; 27. First limit plate; 28. Second limit plate. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0032] Figures 1 to 6 As shown, the crane with a boom crane described in this utility model includes two sets of parallel longitudinal beams 1. A damping frame 2 is provided on the upper end of the longitudinal beam 1. The left and right ends of the damping frame 2 are respectively slidably connected to the corresponding longitudinal beam 1 through electric slide rails 3. The upper end of the damping frame 2 is slidably connected to the main lifting mechanism 4. The main lifting mechanism 4 is used to move heavy objects to a set height.

[0033] During operation, when the main lifting mechanism 4 is unloaded, the damping frame 2 is first moved back and forth by the electric slide rail 3 until it is in the same dimension as the heavy object; then the main lifting mechanism 4 is moved left and right along the damping frame 2 until the main lifting mechanism 4 is above the heavy object. After the main lifting mechanism 4 lifts the heavy object and moves it to the set height, the electric slide rail 3 drives the main lifting mechanism 4 with the load to move in the back and forth direction and place the heavy object to the set position.

[0034] Since the distance between the two sets of longitudinal beams 1 is a set value, and the main lifting mechanism 4 can only move left and right within the damping frame 2 at the upper end of the longitudinal beam 1, the main lifting mechanism 4 can only transport heavy objects between the two sets of longitudinal beams 1. In order to increase the transport range of the crane with the boom crane in the left and right direction, in this utility model, a lifting beam 5 is provided on the lower right side of the damping frame 2; the lifting beam 5 has an "I" shaped cross section, and the upper end of the lifting beam 5 is slidably connected to the lower right side of the damping frame 2. An auxiliary lifting mechanism 6 is provided on the lower right side of the lifting beam 5, and the auxiliary lifting mechanism 6 is used to transport heavy objects to a set height.

[0035] When the heavy object is outside the right longitudinal beam 1, the lifting beam 5 slides outward until the right side of the lifting beam 5 is outside the longitudinal beam 1 and the auxiliary lifting mechanism 6 is above the heavy object. After the auxiliary lifting mechanism 6 moves the heavy object to the set height, the electric slide rail 3 drives the auxiliary lifting mechanism 6 carrying the heavy object to move in the front-back direction and place the heavy object to the set position.

[0036] To facilitate the left-right sliding connection between the lifting beam 5 and the lower end of the damping frame 2, a pulley section 7 is provided between the damping frame 2 and the lifting beam 5 in this invention. The pulley section 7 includes a support guide rail 8 fixed to the lower end face of the damping frame 2. The support guide rail 8 has an "I"-shaped cross-section, and a pair of first guide wheels 9 are symmetrically arranged in the front and rear grooves of the "I"-shaped support guide rail 8. A pair of second guide wheels 10 are correspondingly arranged below the two sets of first guide wheels 9, and the two sets of second guide wheels 10 are respectively located in the "I"-shaped lifting beam 5. Within the front and rear grooves in the middle of beam 5, a pair of support plates 11 are symmetrically arranged on the outer sides of two sets of first guide wheels 9 and two sets of second guide wheels 10. The axles of the two sets of first guide wheels 9 pass through the upper part of the corresponding support plates 11 and are rotatably connected to the support plates 11. The axles of the two sets of second guide wheels 10 pass through the lower part of the corresponding support plates 11 and are rotatably connected to the support plates 11. The middle parts of the front and rear support plates 11 are fixedly connected by a connecting rod 12. The damping frame 2 and the hanging beam 5 are slidably connected left and right by the pulley part 7.

[0037] When the auxiliary lifting mechanism 6 is under load, in order to increase the damping between the damping frame 2 and the lifting beam 5, the auxiliary lifting mechanism 6 is kept in the set position.

[0038] In this embodiment, a braking part is also provided on the left side of the lifting beam 5. The braking part includes a support seat and a pair of friction wheels 13 symmetrically arranged on the front and rear sides of the support seat. The right side of the support seat is fixedly connected to the left end face of the lifting beam 5. A through groove 26 is provided on the upper part of the support plate 11. A compression spring 15 is provided in the through groove 26. The lower end of the compression spring 15 is fixedly connected to the bottom of the through groove 26. A support slider 14 is fixedly provided on the upper end of the compression spring 15. The support slider 14 is slidably arranged in the through groove 26. The friction wheel 13 shaft is passed through the support slider 14 along the front and rear. The front and rear ends of the friction wheel 13 shaft are respectively rotatably connected to the corresponding friction wheel 13. Two sets of brake pads 16 are provided on the front and rear sides of the lower part of the support slider 14. A set of support rods is passed through the left and right ends of each set of brake pads 16. The inner ends of the support rods are fixedly connected to the support plate 11. Each set of brake pads 16 is slidably connected to the corresponding support rod. The inner side of each set of brake pads 16 is provided with an inwardly inclined first slope 17. The outer side of each set of brake pads 16 is provided with the inner side of the friction wheel 13.

[0039] In this embodiment, the lower part of the two sets of support sliders 14 is provided with a second inclined surface that is adapted to the first inclined surface 17, corresponding to the inner side of the brake pad 16.

[0040] During use, the lifting beam 5 forms a lever with the second guide wheel 10 as the fulcrum. The braking part is located on the left side of the fulcrum, and the auxiliary lifting mechanism 6 is located on the right side of the fulcrum. When the auxiliary lifting mechanism 6 is unloaded, the lifting beam 5 is moved left and right to adjust the position of the auxiliary lifting mechanism 6. The friction wheel 13 is squeezed against the lower end face of the support guide rail 8 in the circumferential direction. However, since the auxiliary lifting mechanism 6 is unloaded, the squeezing force cannot drive the compression spring 15 to move the support slider 14 downward. That is, the front and rear brake pads 16 cannot move outward to contact the inner side of the friction wheel 13.

[0041] When the auxiliary lifting mechanism 6 is under load, under the action of gravity, the friction wheel 13 is squeezed against the lower end face of the support guide rail 8 in the circumferential direction, and the squeezing force is sufficient to drive the compression spring 15 to compress. At this time, the friction wheel 13 moves downward under the action of the squeezing force, and the support slider 14 connected to the shaft of the friction wheel 13 moves downward. At the same time, the lower part of the support slider 14 squeezes the first inclined surface 17 inside the brake pads 16 on both the front and rear sides downward. The brake pads 16 move outward along the corresponding support rod until they contact and squeeze the inner side of the friction wheel 13, so that the friction wheel 13 cannot rotate, that is, the loaded auxiliary lifting mechanism 6 is kept in the set position.

[0042] When the auxiliary lifting mechanism 6 is unloaded, in order to limit the left and right movement speed of the pulley part 7, the braking part in this utility model also includes damping cylinders 18 respectively arranged on the outer side of the friction wheel 13 on both sides. The axis of each set of damping cylinders 18 is arranged on the left and right. Guide posts 19 are fixedly inserted at the eccentric position on the outer side of the two sets of friction wheels 13. The left end of each set of damping cylinders 18 is rotatably connected to the guide post 19 on the corresponding side, and the right end of each set of damping cylinders 18 is rotatably connected to the wheel axle of the second guide wheel 10 on the corresponding side.

[0043] In this utility model, the damping cylinder 18 includes a sleeve 20 disposed on the left side. A first positioning ring 21 is fixedly disposed on the left end of the sleeve 20. The first positioning ring 21 is rotatably sleeved on the guide post 19. The right end of the sleeve 20 is open, and a piston 22 is coaxially inserted into the inner cavity. A second positioning ring 23 is fixedly disposed on the right end of the piston 22 and rotatably sleeved on the axle of the second guide wheel 10. The sealed space formed by the piston 22 and the inner cavity of the sleeve 20 is filled with a compressible gas, such as air.

[0044] During operation, the friction wheel 13 rotates, driving the guide post 19 to rotate. The rotation of the guide post 19 drives the piston 22 and the sleeve 20 to slide along the axis. When the piston 22 moves inward relative to the sleeve 20, the compressible gas is compressed, causing the air pressure in the sealed space formed by the piston 22 and the sleeve 20 to gradually decrease. The increased air pressure dampens the inward rotation of the guide post 19. When the piston 22 moves outward relative to the sleeve 20, the air pressure in the sealed space formed by the piston 22 and the sleeve 20 gradually increases. The increased air pressure in the sealed space gradually decreases. The external atmospheric pressure acts on the piston 22, damping the outward movement of the piston 22. In other words, the external atmospheric pressure dampens the outward rotation of the guide post 19. The damping effect of the damping cylinder 18 on the guide post 19 limits the left and right movement speed of the pulley section 7 when the auxiliary lifting mechanism 6 is unloaded.

[0045] In this embodiment, rubber blocks are evenly arranged around the friction wheel 13.

[0046] In order to limit the forward and backward movement of the pulley section 7, in this embodiment, a first limiting plate 27 is provided between each group of first guide wheels 9 and the support plate 11. The inner side of each group of first limiting plates 27 is coaxially fixed with the outer side of the corresponding first guide wheel 9, and the first limiting plate 27 is rotatably connected to the wheel axle of the first guide wheel 9.

[0047] In this embodiment, a second limiting disk 28 is provided between each group of second guide wheels 10 and the support plate 11. The inner side of each group of second limiting disks 28 is coaxially fixed with the outer side of the corresponding second guide wheel 10, and the second limiting disk 28 is rotatably connected to the wheel axle of the second guide wheel 10.

[0048] In this utility model, an operating room 24 is also provided in front of the support guide rail 8, and the operating room 24 is connected to the upper side of the damping frame 2 via the escalator 25.

Claims

1. A crane containing a jib crane, comprising two sets of parallel longitudinal beams, a damping frame mounted on the upper end of each longitudinal beam, the left and right ends of the damping frame being slidably connected to the corresponding longitudinal beams via electric slide rails, and a main lifting mechanism being slidably connected to the upper end of the damping frame; characterized in that: A lifting beam is installed on the lower right side of the damping frame; the lifting beam has an "I" shaped cross section, and the upper end of the lifting beam is slidably connected to the lower right side of the damping frame. An auxiliary lifting mechanism is installed on the lower right side of the lifting beam, which is used to move heavy objects to a set height.

2. The crane with a boom as described in claim 1, characterized in that: A pulley section is provided between the damping frame and the lifting beam. The pulley section includes a support guide rail fixed to the lower end face of the damping frame. The support guide rail has an "I" shaped cross section, and a pair of first guide wheels are symmetrically arranged in the front and rear grooves of the "I" shaped support guide rail. A pair of second guide wheels are correspondingly arranged below the two sets of first guide wheels, and the two sets of second guide wheels are respectively located in the front and rear grooves in the middle of the "I" shaped lifting beam. A pair of support plates are symmetrically arranged on the outer sides of the two sets of first guide wheels and the two sets of second guide wheels. The axles of the two sets of first guide wheels pass through the upper part of the corresponding support plates and are rotatably connected to the support plates. The axles of the two sets of second guide wheels pass through the lower part of the corresponding support plates and are rotatably connected to the support plates. The middle of the two sets of support plates is fixedly connected by a connecting rod.

3. The crane with a boom as described in claim 2, characterized in that: The left side of the lifting beam is also equipped with a braking part, which includes a support seat and a pair of friction wheels symmetrically arranged on the front and rear sides of the support seat. The right side of the support seat is fixedly connected to the left end face of the lifting beam. The upper part of the support plate has a through groove arranged front and rear. A compression spring is installed in the through groove. The lower end of the compression spring is fixedly connected to the bottom of the through groove. A support slider is fixedly installed on the upper end of the compression spring. The support slider is slidably arranged in the through groove. The friction wheel shaft passes through the support slider front and rear. The front and rear ends of the friction wheel shaft are rotatably connected to the corresponding friction wheels. Two sets of brake pads are arranged on the front and rear sides of the lower part of the support slider. A set of support rods passes through the left and right ends of each set of brake pads. The inner ends of the support rods are fixedly connected to the support plate. Each set of brake pads is slidably connected to the corresponding support rod. The inner side of both sets of brake pads is provided with an inwardly inclined first slope. The outer side of the two sets of brake pads is provided with a corresponding inner side of the friction wheel.

4. The crane with a boom as described in claim 3, characterized in that: The lower part of the two sets of support sliders is provided with a second inclined surface that matches the first inclined surface, corresponding to the inner side of the brake pad.

5. The crane with a boom as described in claim 3, characterized in that: The braking unit also includes damping cylinders respectively disposed on the outer sides of the friction wheels on both sides. The axis of each set of damping cylinders is arranged on the left and right. Guide posts are fixedly inserted at the eccentric positions on the outer sides of the two sets of friction wheels. The left end of each set of damping cylinders is rotatably connected to the guide post on the corresponding side, and the right end of each set of damping cylinders is rotatably connected to the wheel axle of the second guide wheel on the corresponding side.

6. The crane with a boom as described in claim 5, characterized in that: The damping cylinder includes a sleeve located on the left side, a first positioning ring fixedly mounted on the left end of the sleeve, the first positioning ring rotatably mounting a guide post, the right end of the sleeve being open, and a piston coaxially inserted into the inner cavity, and a second positioning ring fixedly mounted on the right end of the piston rotatably mounting the axle of the second guide wheel.

7. The crane with a boom as described in claim 3, characterized in that: The friction wheel is uniformly provided with rubber blocks in its circumference.

8. The crane with a jib crane according to claim 5, characterized in that: Each set of first guide wheels is provided with a first limiting plate between it and the support plate. The inner side of each set of first limiting plates is coaxially fixed with the outer side of the corresponding first guide wheel, and the first limiting plate is rotatably connected to the wheel axle of the first guide wheel.

9. The crane with a boom as described in claim 5, characterized in that: Each set of second guide wheels is provided with a second limiting plate between it and the support plate. The inner side of each set of second limiting plates is coaxially fixed with the outer side of the corresponding second guide wheel, and the second limiting plate is rotatably connected to the wheel axle of the second guide wheel.

10. The crane with a jib crane according to claim 2, characterized in that: An operating room is also provided in front of the supporting guide rail, and the operating room is connected to the upper side of the damping frame via an escalator.

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