Lifting sliding device for crane

Abstract

The invention relates to the technical field of cranes, in particular to a lifting and sliding device for a crane, which comprises a moving trolley slidably arranged between double beams of the crane, the moving trolley comprises a frame and wheels, and the frame consists of a bottom plate, a front support frame and a rear support frame; driving devices are arranged at the positions, corresponding to the driving wheels, of the front supporting frame and the rear supporting frame, the driving devices drive the driving wheels to rotate, the lifting device is installed on the vehicle frame and comprises a lifting motor, a first winding drum and a second winding drum, and the lifting motor drives the first winding drum and the second winding drum to rotate. The problems that at the present stage, due to the design that a lifting mechanism with one winding drum needs enough braking torque and a single winding drum, installation and adjustment of a brake can become more complex, the braking difficulty is increased, meanwhile, the selection of connection modes between the winding drums and a speed reducer is limited, installation errors cannot be effectively compensated, the transmission precision is reduced, and the service life of the winding drum is prolonged are solved. And the overall performance of the hoisting mechanism is further influenced.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, and in particular to a lifting and sliding device for cranes. Background Art

[0002] The lifting beam is a special beam sling for lifting objects, generally used for lifting large objects and structural parts; using the lifting beam to lift objects can avoid damage to the objects by the slings, shorten the height of the slings, and reduce the lifting height of the movable pulley. In the process of lifting objects, the lifting beam needs to keep the objects balanced to ensure the lifting safety of the objects, and the balance of the objects is generally determined by whether the lifting beam is balanced. In actual work, after the lifting equipment is used for a long time, the length of the wire rope is deformed differently, which will also cause the lifting beam to deflect, affecting the balance and lifting accuracy of the lifting beam. In addition, the wire rope is connected to the lifting beam through the pulley, and the position of the lifting beam is fixed and cannot be moved and adjusted. Therefore, it is generally adopted to install a lifting mechanism on the sliding device to solve this problem.

[0003] Currently, the commonly used lifting mechanism has only one drum. First of all, there will be challenges in the design of the braking system. Usually, in order to ensure safety, the brake of the lifting mechanism must be normally closed and have sufficient braking torque. The design of a single drum may make the installation and adjustment of the brake more complicated and increase the difficulty of braking. At the same time, the connection type between the drum and the reducer is limited and may not be able to effectively compensate for installation errors, which will lead to reduced transmission accuracy and affect the overall performance of the lifting mechanism.

[0004] At present, a lifting and sliding device for a crane is proposed to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide a lifting and sliding device for a crane, which increases the stability and safety of the system and reduces certain costs by arranging two drums on the lifting device and driving it through a driving mechanism.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: A mobile trolley slidably arranged between double beams of a crane, the mobile trolley comprising a frame and wheels, the wheels comprising a driving wheel and a driven wheel, the frame consisting of a bottom plate, a front support frame and a rear support frame, a driving wheel groove being provided on the left side of the front support frame and the rear support frame, and a driven wheel groove being provided on the right side, the driving wheel being installed in the driving wheel groove, the driving wheel on the front support frame and the driving wheel on the rear support frame being respectively located on wheel rails on the double beams of the crane, the driven wheel being installed in the driven wheel groove, the front support frame and the rear support frame being provided with driving devices at positions corresponding to the driving wheels, the driving device driving the driving wheels to rotate, and also comprising a lifting device, the lifting device being installed on the frame, the lifting device comprising a lifting motor, a first drum and a second drum, the lifting motor driving the first drum and the second drum to rotate.

[0007] It is further defined that the driving device includes a first driving motor and a second driving motor, the driving wheel includes a first driving wheel and a second driving wheel, the first driving motor drives the first driving wheel to rotate, and the second driving motor drives the second driving wheel to rotate.

[0008] It is further defined that the front support frame and the rear support frame are both provided with mounting ears, a motor mounting beam is installed between the front support frame and the rear support frame, the lifting motor is installed on the motor mounting beam, the lifting motor is a dual-output shaft motor, a first reducer is provided on the mounting ears of the front support frame, and a second reducer is provided on the mounting ears of the rear support frame, the first output shaft of the lifting motor is connected to the first reducer, and the second output shaft is connected to the second reducer.

[0009] It is further defined that the left side of the first reducer is provided with a second lifting height limiter, and the right side of the second reducer is provided with a second lifting height limiter. A first lifting height limiter is arranged on the side, and the first reducer and the second reducer are both provided with two output shafts, one output shaft of the first reducer is connected to the first brake, and the other output shaft is connected to one end of the first drum, and the other end of the first drum is connected to the first lifting height limiter, one output shaft of the second reducer is connected to the second brake, and the other output shaft is connected to one end of the second drum, and the other end of the second drum is connected to the second lifting height limiter, the first drum and the second drum are respectively located on the left and right sides of the lifting motor, and brake wheels are arranged under the first brake and the second brake.

[0010] It is further defined that the front ends of the first drum and the second drum are both provided with right-handed wire rope grooves, and the rear ends are provided with left-handed wire rope grooves.

[0011] It is further defined that the bottom plate is provided with a weight-reducing notch.

[0012] It is further defined that fixing plates are installed on the frame on the front side of the first driving wheel and the rear side of the second driving wheel, and cylinders are installed on the fixing plates. The gas rods of the cylinders are inserted through the fixing plates, and a fixing column is fixedly provided on one end of the gas rod away from the cylinder, and a rolling ball is movably connected to one end of the fixing column away from the fixing plate.

[0013] The beneficial effects of the present invention compared to the current technology are: 1. By arranging two drums on the lifting device and driving them through a driving mechanism, the system stability and safety are increased, while reducing certain costs.

[0014] 2. The two driving wheels are driven by motors respectively, which can eliminate some traditional mechanical transmission components, such as clutch, transmission, drive shaft, etc., thereby simplifying the chassis structure of the crane trolley. This not only reduces the failure points, but also reduces the maintenance cost. The transmission efficiency of the system will be improved, which means that with the same energy input, higher work efficiency can be achieved, and the energy recovery efficiency will also be improved, especially in the working environment of frequent start and stop. At the same time, each driving wheel is driven by an independent motor, and independent control can improve the operating performance of the crane mobile trolley and achieve more precise positioning.

[0015] 3. A fixed plate is provided, and a cylinder is provided on the fixed plate, which solves the problem that the anti-overturning effect of the anti-overturning structure of the crane trolley is not good enough during operation. When working, the cylinder is started to drive the piston rod to move, and the ball on the fixed column is pushed to contact the roller of the crane trolley, so that when working, the operation stability of the roller of the crane trolley is guaranteed, and in the process of the trolley moving, the side support plate is used to provide side support for the crane trolley on the track, increase the support when the crane trolley tilts, prevent rollover, and make the anti-overturning effect of the anti-overturning structure of the crane trolley better during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view schematic diagram of the present invention; Figure 2 It is a front view schematic diagram of the present invention; Figure 3 It is a left side schematic diagram of the present invention.

[0017] The markings in the figure correspond respectively to: 1-frame, 11-bottom plate, 12-front support frame, 13-rear support frame, 2-driving wheel, 3-driven wheel, 4-first drive motor, 5-second drive motor, 6-lifting motor, 7-first drum, 8-second drum, 9-motor mounting beam, 21-first reducer, 22-second reducer, 23-second lifting height limiter, 24-first lifting height limiter, 25-first brake, 26-second brake, 27-fixed plate, 28-cylinder, 29-fixed column, 30-ball. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. Example

[0019] like Figure 1-Figure 3As shown, a lifting and sliding device for a crane comprises a mobile trolley slidably arranged between the double beams of the crane, the mobile trolley comprises a frame 1 and wheels, the wheels comprise a driving wheel 2 and a driven wheel 3, the frame 1 comprises a bottom plate 11, a front support frame 12 and a rear support frame 13, the left sides of the front support frame 12 and the rear support frame 13 are both provided with a driving wheel groove, and the right side is provided with a driven wheel groove, the driving wheel 2 is installed in the driving wheel groove, the driving wheel on the front support frame 12 and the driving wheel on the rear support frame 12 are respectively located on the wheel rails on the double beams of the crane, the driven wheel is installed in the driven wheel groove, the front support frame 12 and the rear support frame 13 are provided with a driving device corresponding to the position of the driving wheel, and the driving device comprises a first driving motor 4 and a second driving motor 5, the driving wheel includes a first driving wheel and a second driving wheel, the first driving motor 4 drives the first driving wheel to rotate, and the second driving motor 5 drives the second driving wheel to rotate, and also includes a lifting device, the lifting device includes a lifting motor 6, a first drum 7 and a second drum 8, the front support frame 12 and the rear support frame 12 are both provided with mounting ears, a motor mounting beam 9 is installed between the front support frame 11 and the rear support frame 12, the lifting motor 6 is installed on the motor mounting beam 9, the lifting motor 6 is a dual-output shaft motor, the mounting ears of the front support frame 12 are provided with a first reducer 21, and the mounting ears of the rear support frame 13 are provided with a second reducer 22, the first output shaft of the lifting motor 6 is connected to the first reducer 21, and the second output shaft and The first reducer 21 and the second reducer 22 are connected, a first lifting height limiter 24 is arranged on the right side of the first reducer 21, and a second lifting height limiter 23 is arranged on the left side of the second reducer 22. The first reducer 21 and the second reducer 22 are both provided with two output shafts, one output shaft of the first reducer 21 is connected to the first brake 25, and the other output shaft is connected to one end of the first drum 7, and the other end of the first drum 7 is connected to the second lifting height limiter 23, one output shaft of the second reducer 22 is connected to the second brake 26, and the other output shaft is connected to one end of the second drum 8, and the other end of the second drum 8 is connected to the first lifting height limiter 24, and the first drum 7 and the second drum 8 are respectively located at On the left and right sides of the lifting motor 6, brake wheels are arranged below the first brake 25 and the second brake 26. The front ends of the first drum 7 and the second drum 8 are provided with right-handed wire rope grooves, and the rear ends are provided with left-handed wire rope grooves. The lifting motor 6 drives the first drum 7 and the second drum 8 to rotate. At the same time, weight-reducing grooves are arranged on the bottom plate to reduce the overall weight of the mobile trolley. Fixed plates 27 are installed on the frame on the front side of the first driving wheel and the rear side of the second driving wheel. Cylinders 28 are installed on the fixed plates 27. The gas rod of the cylinder 28 is inserted into the fixed plate 27. A fixed column 29 is fixedly arranged on the end of the gas rod away from the cylinder 28, and a rolling ball 30 is movably connected to the end of the fixed column 29 away from the fixed plate 28.

[0020] When in use, the first drive motor 4 and the second drive motor 5 respectively drive the first driving wheel and the second driving wheel to rotate, driving the mobile trolley to move on the crossbeam, and the lifting motor 6 drives the movement of the first reel 7 and the second reel 8 through the first reducer 21 and the second reducer 22. At the same time, the first lifting height limiter 24 and the second lifting height limiter 23 limit the lifting height. The cylinder 28 is movably connected with a gas rod, which is inserted into the fixed plate. The end of the piston rod 401 away from the hydraulic cylinder 4 is fixed with a fixed column 402, and the end of the fixed column 29 away from the fixed plate 1 is movably connected with a ball 3 0. When working, start the cylinder 28 to drive the air rod to move, and the ball 30 on the fixed column 29 is pushed to contact the driving wheel of the mobile trolley, so that when working, the running stability of the driving wheel of the mobile trolley is guaranteed. When working, start the cylinder 28 to drive the air rod to move, and the ball 30 on the fixed column 29 is pushed to contact the driving wheel of the mobile trolley, so that when working, the running stability of the driving wheel of the mobile trolley is guaranteed. In the process of the trolley moving, the fixed plate 27 is used to provide side support, and the mobile trolley is supported laterally on the track, thereby increasing the support received by the crane trolley when it tilts to prevent it from tipping over.

[0021] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] The above is a detailed introduction to a lifting and sliding device for a crane provided by the present invention. The description of the specific embodiment is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A lifting and sliding device for a crane, comprising a moving trolley slidably arranged between double beams of the crane, the moving trolley comprising a frame (1) and wheels, the wheels comprising a driving wheel (2) and a driven wheel (3), characterized in that: The frame (1) is composed of a bottom plate (11), a front support frame (12) and a rear support frame (13); the left side of the front support frame (12) and the rear support frame (13) are both provided with a driving wheel groove, and the right side is provided with a driven wheel groove; the driving wheel (2) is installed in the driving wheel groove; the driving wheel on the front support frame (12) and the driving wheel on the rear support frame (13) are respectively located on the wheel rails on the double beams of the crane; the driven wheel (3) is installed in the driven wheel groove; the front support frame (12) and the rear support frame (13) are provided with a driving device at the position corresponding to the driving wheel (2); the driving device drives the driving wheel (2) to rotate; and also includes a lifting device; the lifting device is installed on the frame (1); the lifting device includes a lifting motor, a first drum (7) and a second drum (8); the lifting motor (6) drives the first drum (7) and the second drum (8) to rotate.

2. A lifting and sliding device for a crane according to claim 1, characterized in that: The driving device comprises a first driving motor (4) and a second driving motor (5), the driving wheel (2) comprises a first driving wheel and a second driving wheel, the first driving motor (4) drives the first driving wheel to rotate, and the second driving motor (5) drives the second driving wheel to rotate.

3. A lifting and sliding device for a crane according to claim 1, characterized in that: The front support frame (12) and the rear support frame (13) are both provided with mounting lugs, a motor mounting beam (9) is installed between the front support frame (12) and the rear support frame (13), the lifting motor (6) is installed on the motor mounting beam (9), the lifting motor (6) is a dual-output shaft motor, a first reducer (21) is provided on the mounting lug of the front support frame (12), and a second reducer (22) is provided on the mounting lug of the rear support frame (13), the first output shaft of the lifting motor (6) is connected to the first reducer (21), and the second output shaft is connected to the second reducer (22).

4. A lifting and sliding device for a crane according to claim 1, characterized in that: A first lifting height limiter (24) is arranged on the right side of the first reducer (21), and a second lifting height limiter (23) is arranged on the left side of the second reducer (22). Both the first reducer (21) and the second reducer (22) are provided with two output shafts, one output shaft of the first reducer (21) is connected to the first brake (25), and the other output shaft is connected to one end of the first drum (7), and the other end of the first drum (7) is connected to the second lifting height limiter (23). One output shaft of the second reducer (22) is connected to the second brake (26), and the other output shaft is connected to one end of the second drum (8), and the other end of the second drum (8) is connected to the first lifting height limiter (24). The first drum (7) and the second drum (8) are respectively located on the left and right sides of the lifting motor (6), and brake wheels are arranged below the first brake (25) and the second brake (26).

5. The lifting and sliding device for a crane according to claim 1, characterized in that: The front ends of the first drum (7) and the second drum (8) are both provided with right-handed wire rope grooves, and the rear ends are provided with left-handed wire rope grooves.

6. The lifting and sliding device for a crane according to claim 1, characterized in that: The bottom plate (11) is provided with a weight-reducing notch.

7. A lifting and sliding device for a crane according to claim 2, characterized in that: A fixing plate (27) is installed on the vehicle frame (1) at the front side of the first driving wheel and the rear side of the second driving wheel. A cylinder (28) is installed on the fixing plate (27). The gas rod of the cylinder (28) is inserted through the fixing plate (27). A fixing column (29) is fixedly provided at one end of the gas rod away from the cylinder (28). A rolling ball (30) is movably connected to one end of the fixing column (29) away from the fixing plate (27).

Images