Portal frame for movable hoisting

Abstract

The utility model discloses a portal frame for moving and hoisting, which comprises a base, a mounting rack is arranged above the base, a fixed seat is arranged above the base, two groups of symmetrically distributed adjusting rods are arranged on the fixed seat, telescopic rods are arranged in the two groups of adjusting rods, screw rods are arranged in the two groups of adjusting rods, and the telescopic rods are connected with the screw rods. Clamping rings are arranged on the two sets of telescopic rods, two sets of supports which are symmetrically distributed are arranged between the base and the mounting frame, two sets of first lead screws which are symmetrically distributed are arranged in the mounting frame, and two sets of second lead screws which are symmetrically distributed are arranged in the base; the motor hoisted by the portal frame is limited and fixed by connecting the fixed seat with the two groups of adjusting rods, the telescopic rods and the clamping rings in a matched manner, so that the problem that the motor shakes in the process of moving the hoisted motor by using the portal frame is avoided, and meanwhile, the manpower investment is saved; and a worker does not need to specially hold the motor with hands to fix and prevent the motor from shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry, in particular to a gantry for mobile hoisting. Background Art

[0002] The mobile hoisting gantry, also known as the mobile lifting gantry, is a new type of small lifting equipment, which is specially designed for the daily production needs of medium and small factories. It can be used for equipment handling, warehousing and shipping, hoisting and repairing heavy equipment, material transportation, etc. When the motor is damaged during daily production work, it needs to be moved, disassembled and repaired. It is difficult to rely on manual handling and disassembly. Therefore, in the prior art, a gantry can be used to hoist and move the motor, which is convenient for the handling and maintenance of the motor.

[0003] In the prior art, when using a gantry to lift and assist in moving the motor ear of the motor, at least one worker is required to hold the lifted motor steadily to prevent the motor from shaking violently during the movement. Moreover, the structure of the existing hoisting gantry is fixed and non-adjustable, occupying a large space when not in use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gantry for mobile hoisting to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A gantry for mobile hoisting, including a base, four groups of symmetrically distributed pulleys are arranged below the base, an installation frame is arranged above the base, the installation frame is rotatably connected to the base through a rotating shaft, a lifting ring is fixedly installed on the installation frame, a fixed seat is arranged above the base, two groups of symmetrically distributed adjusting rods are arranged on the fixed seat, a bidirectional threaded rod is arranged in the fixed seat, telescopic rods are arranged in both groups of adjusting rods, screw rods are arranged in both groups of adjusting rods, snap rings are arranged on both groups of telescopic rods, two groups of symmetrically distributed brackets are arranged between the base and the installation frame, both ends of the two groups of brackets are rotatably installed with a first slider and a second slider through a rotating shaft, and the two groups of brackets are respectively slidably connected to the installation frame and the base through the first slider and the second slider. Two groups of symmetrically distributed first lead screws are arranged in the installation frame, and two groups of symmetrically distributed second lead screws are arranged in the base.

[0006] As a further preferred technical solution of the present technical solution, both ends of the bidirectional threaded rod respectively penetrate through the fixed seat and are rotatably connected to the fixed seat, both ends of the bidirectional threaded rod respectively penetrate through the two groups of adjusting rods and are respectively threadedly connected to the two groups of adjusting rods, both groups of adjusting rods are slidably connected to the fixed seat, the lower end of the screw rod penetrates through the adjusting rod and is rotatably connected to the adjusting rod through a bearing, and the upper end of the screw rod penetrates through the corresponding telescopic rod and is threadedly connected to the telescopic rod.

[0007] As a further optimization of this technical solution, both groups of the snap rings are rotatably connected to the corresponding telescopic rods through rotating rods. A gear is sleeved on the rotating rod, a rack is arranged in the telescopic rod, a cylinder is arranged in the telescopic rod, the rack is slidably connected to the telescopic rod, the rack is connected to the output end of the piston rod of the cylinder, and the rack is meshed with the gear.

[0008] As a further optimization of this technical solution, both ends of the two groups of the first lead screws penetrate through the mounting frame and are rotatably connected to the mounting frame. The two groups of the first lead screws respectively penetrate through the two groups of the first sliders and are threadedly connected to the first sliders.

[0009] As a further optimization of this technical solution, both ends of the two groups of the second lead screws penetrate through the base and are rotatably connected to the base. The two groups of the second lead screws respectively penetrate through the two groups of the second sliders and are threadedly connected to the second sliders.

[0010] As a further optimization of this technical solution, the lower ends of the two groups of the first lead screws are both sleeved with first synchronous pulleys. A first synchronous belt is arranged in the mounting frame, and the first synchronous belt is respectively drivingly connected to the two groups of the first synchronous pulleys. The right ends of the two groups of the second lead screws are both sleeved with second synchronous pulleys. A second synchronous belt is arranged in the base, and the second synchronous belt is respectively drivingly connected to the two groups of the second synchronous pulleys.

[0011] The utility model provides a gantry for mobile hoisting, which has the following beneficial effects:

[0012] (1) Through the provided fixed seat, the two groups of adjusting rods, telescopic rods and snap rings, the utility model realizes the limitation and fixation of the motor hoisted by the gantry, avoids the problem of the motor shaking during the process of moving the hoisted motor by the gantry, and meanwhile saves the input of manpower, and does not require the staff to specifically hold the motor by hand for fixation and prevent it from shaking. After fixing the chain block on the lifting ring and then fixing the lifting lugs on both sides of the motor on the chain block to lift the motor, then according to the actual size and shape of the motor, adjust the distance between the two groups of adjusting rods and the length of the telescopic rod extending out. The angle of the snap ring is adjusted by driving the rack to slide by the cylinder and cooperating with the gear. The two snap rings cooperate to limit the position of the motor, and effectively avoid the shaking of the motor under the action of the two snap rings during the process of the gantry moving the motor.

[0013] (2) The utility model realizes the folding and storage of the mounting rack and the base between the two sets provided, reduces the volume of the gantry, reduces its floor space, and facilitates the storage and transportation of the gantry itself; by driving the rotation of the first lead screw and the second lead screw respectively by two sets of motors, and under the action of the first synchronous pulley, the first synchronous belt, the second synchronous pulley and the second synchronous belt, the two sets of first lead screws and the two sets of second lead screws rotate synchronously. Under the limiting action of the mounting rack and the base, the positions of the first slider and the second slider are adjusted, and then the supporting angle of the bracket is adjusted, so that the mounting rack is turned over by 90 degrees to fit the base, reducing the space occupation of the gantry. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the whole of the utility model;

[0015] Figure 2 is a schematic structural diagram of the bracket of the utility model;

[0016] Figure 3 is a schematic structural diagram of the mounting rack of the utility model;

[0017] Figure 4 is a schematic structural diagram of the snap ring of the utility model;

[0018] Figure 5 is of the utility model Figure 4 - enlarged structural view of part A;

[0019] In the figure: 1, base; 2, pulley; 3, fixed seat; 4, adjusting rod; 5, telescopic rod; 6, snap ring; 7, screw; 8, double-threaded screw rod; 9, rotating rod; 10, gear; 11, rack; 12, cylinder; 13, mounting rack; 14, lifting ring; 15, bracket; 16, first slider; 17, second slider; 18, first lead screw; 19, second lead screw; 20, first synchronous pulley; 21, first synchronous belt; 22, second synchronous pulley; 23, second synchronous belt. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] The present utility model provides a technical solution: as Figure 1 , Figure 4 and Figure 5As shown in the figure, in this embodiment, a gantry for mobile hoisting includes a base 1. Four sets of symmetrically distributed pulleys 2 are provided below the base 1. An installation frame 13 is provided above the base 1. The installation frame 13 is rotatably connected to the base 1 through a rotating shaft. A lifting ring 14 is fixedly installed on the installation frame 13. A fixed seat 3 is provided above the base 1. Two sets of symmetrically distributed adjusting rods 4 are provided on the fixed seat 3. A bidirectional threaded rod 8 is provided inside the fixed seat 3. Telescopic rods 5 are provided inside both sets of adjusting rods 4. Screws 7 are provided inside both sets of adjusting rods 4. Snap rings 6 are provided on both sets of telescopic rods 5. Two sets of symmetrically distributed brackets 15 are provided between the base 1 and the installation frame 13. The two ends of both sets of brackets 15 are rotatably installed with a first slider 16 and a second slider 17 through rotating shafts. The two sets of brackets 15 are respectively slidably connected to the installation frame 13 and the base 1 through the first slider 16 and the second slider 17. Two sets of symmetrically distributed first lead screws 18 are provided inside the installation frame 13. Two sets of symmetrically distributed second lead screws 19 are provided inside the base 1. The two ends of the bidirectional threaded rod 8 respectively penetrate through the fixed seat 3 and are rotatably connected to the fixed seat 3. The two ends of the bidirectional threaded rod 8 respectively penetrate through the two sets of adjusting rods 4 and are respectively threadedly connected to the two sets of adjusting rods 4. Both sets of adjusting rods 4 are slidably connected to the fixed seat 3. The lower end of the screw 7 penetrates through the adjusting rod 4 and is rotatably connected to the adjusting rod 4 through a bearing. The upper end of the screw 7 penetrates through the corresponding telescopic rod 5 and is threadedly connected to the telescopic rod 5. Both sets of snap rings 6 are rotatably connected to the corresponding telescopic rods 5 through a rotating rod 9. A gear 10 is sleeved on the rotating rod 9. A rack 11 is provided inside the telescopic rod 5. A cylinder 12 is provided inside the telescopic rod 5. The rack 11 is slidably connected to the telescopic rod 5. The rack 11 is connected to the output end of the piston rod of the cylinder 12. The rack 11 is meshed with the gear 10.

[0022] Through the provided fixed seat 3 cooperating with the two sets of adjusting rods 4, telescopic rods 5 and snap rings 6, the limiting and fixing of the motor hoisted by the gantry are realized, avoiding the problem of the motor shaking during the process of using the gantry to move the hoisted motor, and at the same time saving the input of manpower, without the need for staff to specifically hold the motor by hand for fixing and preventing it from shaking.

[0023] As Figure 1 and Figure 2 、 Figure 3As shown in the figure, both ends of the two groups of first lead screws 18 penetrate through the mounting frame 13 and are rotatably connected to the mounting frame 13. The two groups of first lead screws 18 respectively penetrate through the two groups of first sliders 16 and are threadedly connected to the first sliders 16. Both ends of the two groups of second lead screws 19 penetrate through the base 1 and are rotatably connected to the base 1. The two groups of second lead screws 19 respectively penetrate through the two groups of second sliders 17 and are threadedly connected to the second sliders 17. A first synchronous pulley 20 is sleeved on the lower end of each of the two groups of first lead screws 18. A first synchronous belt 21 is provided in the mounting frame 13. The first synchronous belt 21 is respectively drivingly connected to the two groups of first synchronous pulleys 20. A second synchronous pulley 22 is sleeved on the right end of each of the two groups of second lead screws 19. A second synchronous belt 23 is provided in the base 1. The second synchronous belt 23 is respectively drivingly connected to the two groups of second synchronous pulleys 22.

[0024] The two groups of motors drive the rotation of the first lead screws 18 and the second lead screws 19 respectively. Under the action of the first synchronous pulleys 20, the first synchronous belt 21, the second synchronous pulleys 22 and the second synchronous belt 23, the two groups of first lead screws 18 and the two groups of second lead screws 19 rotate synchronously. Under the limiting action of the mounting frame 13 and the base 1, the positions of the first sliders 16 and the second sliders 17 are adjusted, and then the support angle of the support 15 is adjusted, so that the mounting frame 13 is turned over by ninety degrees to fit the base 1, reducing the space occupation of the gantry.

[0025] The present utility model provides a gantry for mobile hoisting. The specific working principle is as follows: After fixing the chain hoist on the hanging ring 14, the hanging ears on both sides of the motor are fixed on the chain hoist to lift the motor. Subsequently, according to the actual size and shape of the motor, the distance between the two groups of adjusting rods 4 is adjusted, and the extended length of the telescopic rod 5 is adjusted. The cylinder 12 drives the rack 11 to slide and cooperate with the gear 10 to adjust the angle of the snap ring 6. The two snap rings 6 cooperate to limit the position of the motor. During the process of the gantry moving the motor, the two snap rings 6 effectively prevent the motor from shaking. The two groups of motors drive the rotation of the first lead screws 18 and the second lead screws 19 respectively. Under the action of the first synchronous pulleys 20, the first synchronous belt 21, the second synchronous pulleys 22 and the second synchronous belt 23, the two groups of first lead screws 18 and the two groups of second lead screws 19 rotate synchronously. Under the limiting action of the mounting frame 13 and the base 1, the positions of the first sliders 16 and the second sliders 17 are adjusted, and then the support angle of the support 15 is adjusted, so that the mounting frame 13 is turned over by ninety degrees to fit the base 1, reducing the space occupation of the gantry.

[0026] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mobile lifting gantry, comprising a base (1), characterized in that: Four groups of symmetrically distributed pulleys (2) are provided below the base (1); a mounting frame (13) is provided above the base (1); the mounting frame (13) is rotatably connected to the base (1) via a rotating shaft; a lifting ring (14) is fixedly installed on the mounting frame (13); a fixing seat (3) is provided above the base (1); two groups of symmetrically distributed adjusting rods (4) are provided on the fixing seat (3); bidirectional threaded rods (8) are provided in the fixing seat (3); telescopic rods (5) are provided in the two groups of adjusting rods (4); screw rods (7) are provided in the two groups of adjusting rods (4); The telescopic rod (5) is provided with a clamping ring (6), and two groups of symmetrically distributed brackets (15) are provided between the base (1) and the mounting frame (13). Both ends of the two groups of brackets (15) are rotatably mounted with a first slider (16) and a second slider (17) through a rotating shaft. The two groups of brackets (15) are slidably connected to the mounting frame (13) and the base (1) through the first slider (16) and the second slider (17), respectively. Two groups of symmetrically distributed first screw rods (18) are provided in the mounting frame (13), and two groups of symmetrically distributed second screw rods (19) are provided in the base (1).

2. The mobile hoisting gantry according to claim 1, characterized in that: The two ends of the bidirectional threaded rod (8) respectively penetrate the fixed seat (3) and are rotatably connected to the fixed seat (3); the two ends of the bidirectional threaded rod (8) respectively penetrate the two groups of adjustment rods (4) and are respectively threadedly connected to the two groups of adjustment rods (4); the two groups of adjustment rods (4) are both slidably connected to the fixed seat (3); the lower end of the screw rod (7) penetrates the adjustment rod (4) and is rotatably connected to the adjustment rod (4) via a bearing; the upper end of the screw rod (7) penetrates the corresponding telescopic rod (5) and is threadedly connected to the telescopic rod (5).

3. The mobile hoisting gantry according to claim 1, characterized in that: The two groups of clamping rings (6) are rotatably connected to the corresponding telescopic rods (5) through a rotating rod (9); a gear (10) is sleeved on the rotating rod (9); a rack (11) is arranged inside the telescopic rod (5); a cylinder (12) is arranged inside the telescopic rod (5); the rack (11) is slidably connected to the telescopic rod (5); the rack (11) is connected to the output end of the piston rod of the cylinder (12); and the rack (11) is meshedly connected to the gear (10).

4. The mobile hoisting gantry according to claim 1, characterized in that: Both ends of the two groups of the first screw rods (18) pass through the mounting frame (13) and are rotatably connected to the mounting frame (13); the two groups of the first screw rods (18) respectively pass through the two groups of the first sliding blocks (16) and are threadedly connected to the first sliding blocks (16).

5. The mobile hoisting gantry according to claim 1, characterized in that: Both ends of the two sets of the second screw rods (19) penetrate the base (1) and are rotatably connected to the base (1); the two sets of the second screw rods (19) respectively penetrate the two sets of the second sliders (17) and are threadedly connected to the second sliders (17).

6. The mobile hoisting gantry according to claim 1, characterized in that: The lower ends of the two groups of the first screw rods (18) are sleeved with first synchronous wheels (20), the mounting frame (13) is provided with a first synchronous belt (21), the first synchronous belt (21) is respectively connected to the two groups of the first synchronous wheels (20), the right ends of the two groups of the second screw rods (19) are sleeved with second synchronous wheels (22), the base (1) is provided with a second synchronous belt (23), the second synchronous belt (23) is respectively connected to the two groups of the second synchronous wheels (22).

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