Trackless semi-portal crane

Abstract

The utility model belongs to the technical field of cranes, and particularly relates to a trackless semi-portal crane which comprises a base, supporting legs, a main beam and an electric hoist, the supporting legs are fixedly installed on the top of the base, the main beam is fixedly installed on the right sides of the supporting legs, the electric hoist is connected into the main beam in a sliding mode, and a lifting device is arranged at the bottom of the base. The lifting device comprises an adjusting unit, a supporting unit and a fixing unit, and the adjusting unit is arranged at the bottom of the base. According to the trackless semi-portal crane, by arranging the adjusting unit, when the angle of a heavy object needs to be adjusted, a motor is started to drive a conveying piece to conduct transmission, the conveying piece drives a rotating shaft to rotate, then supporting legs drive a main beam to rotate, the angle of the heavy object is adjusted, and therefore the heavy object can be conveniently placed at different positions; the problems that in the background technology, in the using process, only a hoisted heavy object can be moved transversely and longitudinally, the angle of the hoisted heavy object cannot be adjusted, and practicability is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a trackless semi-gantry crane. Background Art

[0002] In China, with the increase in labor costs and the decrease in labor, semi-gantry cranes are more and more widely used in factory production and manufacturing. Most semi-gantry cranes need to be installed with ground rails on the ground.

[0003] The installation of ground tracks is not only complex and difficult to construct, but also affects the passability of the ground. When using ground trackless cranes, the ground cannot be guaranteed to be completely level, and there will be local ups and downs. When installing the upper track, it is sometimes impossible to ensure that the track is completely straight, and there will be a certain slope. The above problems will affect the normal use of the crane, resulting in problems such as three legs or active wheels being suspended in the air.

[0004] For example, a trackless semi-gantry crane disclosed in Chinese patent CN219567365U, when the ground is uneven or the track is tilted, the hinge shaft on the upper end beam device can rotate around the hinge seat, which can not only ensure that the two sets of wheel groups on the upper end beam device contact the track at the same time, but also evenly distribute the wheel pressure, so that the four wheel groups of the crane can all contact the ground or the track, and the problem of the wheel groups hanging in the air will not occur, which effectively solves the problems of uneven ground up and down and uneven and tilted upper track, and can effectively reduce the construction difficulty of the factory floor and the installation difficulty of the upper track, and avoid wasting manpower and material resources on the factory floor and the upper track to ensure accuracy requirements.

[0005] However, the device can only move the suspended weight horizontally and vertically during use, but cannot adjust the angle of the suspended weight, so it is less practical.

[0006] For this reason, we urgently need to provide a trackless semi-gantry crane. Utility Model Content

[0007] The utility model aims to provide a trackless semi-gantry crane to solve the problem of low practicality in that the crane can only move the suspended weight horizontally and vertically during use but cannot adjust the angle of the suspended weight.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a trackless semi-gantry crane, comprising a base, legs, a main beam and an electric hoist, the legs being fixedly installed on the top of the base, the main beam being fixedly installed on the right side of the legs, the electric hoist being slidably connected to the inside of the main beam, and a lifting device being arranged at the bottom of the base.

[0009] The lifting device comprises an adjusting unit, a supporting unit and a fixing unit. The adjusting unit is arranged at the bottom of the base, the supporting unit is arranged above the base, and the fixing unit is arranged below the base.

[0010] The adjustment unit includes a bearing, a rotating shaft, a motor, a transmission member, a roller and a mounting seat. The mounting seat is arranged below the base, the bearing is fixedly installed on the bottom of the mounting seat, one end of the rotating shaft is fixedly installed on the inner ring of the bearing, the motor is fixedly installed on the right side of the top of the mounting seat, the transmission member is connected to the output end of the motor, and the roller is installed around the bottom of the base.

[0011] Preferably, the support unit includes a reinforcing rib, a fixed block 1, a fixed block 2, a rope 1 and a rope 2, the reinforcing rib is fixedly installed at the connection between the support leg and the main beam, the fixed block 1 is fixedly installed on the left side of the top of the main beam, the fixed block 2 is fixedly installed on the right side of the top of the main beam, one end of the rope 1 is fixedly installed on the upper right end of the support leg, and one end of the rope 2 is fixedly installed on the upper right end of the support leg.

[0012] Preferably, the fixing unit comprises a running wheel, a side ear and a bolt, the running wheel is fixedly mounted on the front and rear ends of the bottom of the mounting seat, the side ear is fixedly mounted on the left and right sides of the mounting seat, and the bolt is threadedly connected to the inside of the side ear.

[0013] Preferably, the upper end of the rotating shaft extends above the mounting seat and is fixedly connected to the bottom of the base. When the rotating shaft rotates around the bearing, the base is driven to rotate, and then the main beam is driven to rotate through the support legs to adjust the angle of the lifted weight.

[0014] Preferably, the end of rope 1 away from the leg is fixedly connected to fixed block 1, and the end of rope 2 away from the leg is fixedly connected to fixed block 2. The right end of the main beam is supported by rope 1 and rope 2 to improve the strength of the main beam.

[0015] Preferably, a threaded groove is provided inside the side ear, which is connected to the side ear by a bolt and the lower end of the bolt is inserted into the ground, thereby facilitating the fixation of the device.

[0016] Preferably, an annular groove is provided on the upper surface of the mounting seat, and the lower end of the roller is rollingly connected inside the annular groove. The roller is limited by the annular groove to prevent the roller from deviating. At the same time, the roller supports the base to facilitate the rotation of the base.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The trackless semi-gantry crane is provided with an adjustment unit. When it is necessary to adjust the angle of the weight, the motor is started to drive the transmission member, the transmission member drives the rotating shaft to rotate, and then the support legs drive the main beam to rotate, so as to adjust the angle of the weight, thereby facilitating the placement of the weight at different positions. This solves the problem in the background technology that during use, the lifted weight can only be moved horizontally and vertically, and the angle of the lifted weight cannot be adjusted, resulting in low practicality.

[0019] 2. The trackless semi-gantry crane is provided with a supporting unit, and supports the right end of the main beam through rope 1 and rope 2, thereby improving the strength of the main beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the internal structure of the mounting base of the utility model;

[0022] Figure 3 This is a disassembled view of the connection between the base and the mounting seat of the utility model;

[0023] Figure 4 It is a schematic diagram of the mounting seat structure of the utility model.

[0024] In the figure: 1. base; 2. outrigger; 3. main beam; 4. electric hoist; 501. bearing; 502. rotating shaft; 503. motor; 504. transmission part; 505. roller; 506. mounting seat; 601. reinforcing rib; 602. fixing block 1; 603. fixing block 2; 604. rope 1; 605. rope 2; 701. walking wheel; 702. side ear; 703. bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] A trackless semi-gantry crane comprises a base 1, legs 2, a main beam 3 and an electric hoist 4. The legs 2 are fixedly installed on the top of the base 1, the main beam 3 is fixedly installed on the right side of the legs 2, the electric hoist 4 is slidably connected to the inside of the main beam 3, and a lifting device is arranged at the bottom of the base 1.

[0029] The lifting device comprises an adjusting unit, a supporting unit and a fixing unit. The adjusting unit is arranged at the bottom of the base 1 , the supporting unit is arranged above the base 1 , and the fixing unit is arranged below the base 1 .

[0030] The adjusting unit includes a bearing 501, a rotating shaft 502, a motor 503, a transmission member 504, a roller 505 and a mounting seat 506. The mounting seat 506 is arranged below the base 1. The bearing 501 is fixedly mounted on the bottom of the mounting seat 506. One end of the rotating shaft 502 is fixedly mounted on the inner ring of the bearing 501. The upper end of the rotating shaft 502 extends above the mounting seat 506 and is fixedly connected to the bottom of the base 1. When the rotating shaft 502 rotates around the bearing 501, the base 1 is driven to rotate, and then the main beam 3 is driven to rotate through the support leg 2 to adjust the angle of the lifted weight. The motor 503 is fixedly mounted on the right side of the top of the mounting seat 506. The transmission member 504 is connected to the motor 50 3, the transmission member 504 includes a transmission shaft, a first gear and a second gear. The transmission shaft is fixedly mounted on the output end of the motor 503, the first gear is fixedly mounted on the end of the transmission shaft away from the motor 503, the second gear is fixedly mounted on the outside of the rotating shaft 502, and the first gear and the second gear are meshed with each other. The motor 503 drives the transmission shaft to rotate, and the transmission shaft drives the first gear to rotate and meshes with the second gear at the same time, so that the second gear drives the rotating shaft 502 to rotate, and then the support leg 2 drives the main beam 3 to rotate, and the angle of the weight is adjusted. The rollers 505 are installed around the bottom of the base 1, and the base 1 is supported by the rollers 505, and the rotation of the base 1 is facilitated.

[0031] The fixing unit includes a walking wheel 701, a side ear 702 and a bolt 703. The walking wheel 701 is fixedly installed at the front and rear ends of the bottom of the mounting seat 506. The side ears 702 are fixedly installed at the left and right sides of the mounting seat 506. A threaded groove is opened inside the side ear 702. The bolt 703 is connected to the side ear 702 and the lower end of the bolt 703 is inserted into the ground, so as to facilitate the fixation of the device. The bolt 703 is threadedly connected to the inside of the side ear 702.

[0032] Embodiment 2:

[0033] On the basis of Example 1: the supporting unit includes a reinforcing rib 601, a fixed block 1 602, a fixed block 2 603, a rope 1 604 and a rope 2 605, the reinforcing rib 601 is fixedly installed at the connection between the support leg 2 and the main beam 3, the fixed block 1 602 is fixedly installed on the left side of the top of the main beam 3, the fixed block 2 603 is fixedly installed on the right side of the top of the main beam 3, one end of the rope 1 604 is fixedly installed on the upper right end of the support leg 2, one end of the rope 2 605 is fixedly installed on the upper right end of the support leg 2, the end of the rope 1 604 away from the support leg 2 is fixedly connected to the fixed block 1 602, the end of the rope 2 605 away from the support leg 2 is fixedly connected to the fixed block 2 603, the right end of the main beam 3 is supported by the rope 1 604 and the rope 2 605, and the strength of the main beam 3 is improved.

[0034] Embodiment three:

[0035] On the basis of Example 1: an annular groove is opened on the upper surface of the mounting seat 506, and the lower end of the roller 505 is rollingly connected inside the annular groove. The roller 505 is limited by the annular groove to prevent the roller 505 from running off the track. At the same time, the roller 505 supports the base 1 to facilitate the rotation of the base 1.

[0036] When in use, the pushing device cooperates with the walking wheel 701 to move the device to the desired position, and then the device is fixed to the ground by connecting it to the bolt 703, and then the heavy object is lifted by the hook connected to the electric hoist 4. When the angle of the heavy object needs to be adjusted, the motor 503 is started to drive the transmission shaft to rotate. The transmission shaft drives the first gear to rotate and engages with the second gear at the same time, so that the second gear drives the rotating shaft 502 to rotate, and then the support leg 2 drives the main beam 3 to rotate, so as to adjust the angle of the heavy object, thereby facilitating the placement of the heavy object in different positions.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A trackless semi-gantry crane, comprising a base (1), a leg (2), a main beam (3) and an electric hoist (4), wherein the leg (2) is fixedly mounted on the top of the base (1), the main beam (3) is fixedly mounted on the right side of the leg (2), and the electric hoist (4) is slidably connected to the inside of the main beam (3), characterized in that: A lifting device is provided at the bottom of the base (1); The lifting device comprises an adjusting unit, a supporting unit and a fixing unit, wherein the adjusting unit is arranged at the bottom of the base (1), the supporting unit is arranged above the base (1), and the fixing unit is arranged below the base (1); The adjustment unit comprises a bearing (501), a rotating shaft (502), a motor (503), a transmission member (504), a roller (505) and a mounting seat (506); the mounting seat (506) is arranged below the base (1); the bearing (501) is fixedly mounted on the bottom of the mounting seat (506); one end of the rotating shaft (502) is fixedly mounted on the inner ring of the bearing (501); the motor (503) is fixedly mounted on the right side of the top of the mounting seat (506); the transmission member (504) is connected to the output end of the motor (503); and the roller (505) is mounted around the bottom of the base (1).

2. A trackless semi-gantry crane according to claim 1, characterized in that: The support unit comprises a reinforcing rib (601), a fixing block 1 (602), a fixing block 2 (603), a rope 1 (604) and a rope 2 (605); the reinforcing rib (601) is fixedly mounted at the connection between the support leg (2) and the main beam (3); the fixing block 1 (602) is fixedly mounted at the left side of the top of the main beam (3); the fixing block 2 (603) is fixedly mounted at the right side of the top of the main beam (3); one end of the rope 1 (604) is fixedly mounted at the upper right end of the support leg (2); and one end of the rope 2 (605) is fixedly mounted at the upper right end of the support leg (2).

3. A trackless semi-gantry crane according to claim 1, characterized in that: The fixing unit comprises a running wheel (701), a side ear (702) and a bolt (703); the running wheel (701) is fixedly mounted on the front and rear ends of the bottom of the mounting seat (506); the side ear (702) is fixedly mounted on the left and right sides of the mounting seat (506); and the bolt (703) is threadedly connected to the inside of the side ear (702).

4. A trackless semi-gantry crane according to claim 1, characterized in that: The upper end of the rotating shaft (502) extends above the mounting seat (506) and is fixedly connected to the bottom of the base (1).

5. A trackless semi-gantry crane according to claim 2, characterized in that: The end of the rope 1 (604) away from the supporting leg (2) is fixedly connected to the fixing block 1 (602), and the end of the rope 2 (605) away from the supporting leg (2) is fixedly connected to the fixing block 2 (603).

6. A trackless semi-gantry crane according to claim 3, characterized in that: The side ears (702) are provided with thread grooves inside.

7. A trackless semi-gantry crane according to claim 1, characterized in that: An annular sliding groove is provided on the upper surface of the mounting seat (506), and the lower end of the roller (505) is rollingly connected inside the annular sliding groove.

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