Auxiliary supporting assembly for portal crane

Abstract

The utility model discloses an auxiliary supporting assembly for a portal crane, which comprises two I-shaped rails, two supporting legs, two U-shaped plates, four rotating shafts, four rollers, a cross beam, two driving mechanisms and two auxiliary supporting mechanisms, the two supporting legs are arranged above the two I-shaped rails respectively, the two U-shaped plates are fixedly installed at the bottom ends of the two supporting legs respectively, and the four rotating shafts are rotationally installed on the two U-shaped plates respectively and symmetrically distributed in pairs. The gantry crane is reasonable in design, the two corresponding rollers can be controlled to rotate at the same time so as to drive the gantry crane to move, the two inclined rods and the two auxiliary wheels can be controlled to move up and down according to needs so as to support and reinforce the two supporting legs, the stability of the gantry crane in the stop and operation states is improved, and the gantry crane is convenient to use. And rollover and collapse are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to an auxiliary supporting component for gantry cranes. Background Art

[0002] With the development of society, cranes are indispensable tools in construction, metallurgy, railways, shipbuilding, etc. Cranes are machines that can lift objects vertically and move objects horizontally within a certain range. Intermittent action and cyclic operation are the characteristics of crane work. Cranes are divided into general cranes, construction cranes, metallurgical cranes, railway cranes, port cranes, shipbuilding cranes, deck cranes, etc. according to their main uses. Cranes are divided into bridge cranes, jib cranes, rotary cranes and non-rotating cranes according to their structural characteristics; fixed cranes and running cranes, and running cranes are divided into track-type and trackless cranes. Existing cranes have a large windward area. In areas prone to wind damage, the lateral pressure of wind on the crane has a great impact on the use of the crane. When operating, the crane is often tilted and overturned because the force structure of the support frame is too small and the support surface cannot bear the force better. The overturning of the crane will cause serious damage to people's health and economy.

[0003] In response to the above problem, a gantry crane support device is announced in Chinese patent announcement with announcement number CN214828428U, and its technical highlights are: it includes a gantry crane body, vertical support legs, a support base and a triangular reinforcement plate, the vertical support legs are installed at the bottom of the gantry crane body, and the vertical support legs are located on both sides of the bottom of the gantry crane body, the support base is installed at the bottom of the vertical support legs, a triangular reinforcement plate is installed between the vertical support legs and the support base, and the triangular reinforcement plate is located at the four corners of the vertical support legs, and the vertical support legs are provided with ventilation holes.

[0004] In actual operation, it was found that the above scheme still has at least the following defects: the device lacks auxiliary support in the forward direction, and the gantry will shake due to the inertia of the cargo when starting and stopping movement. During the lifting process, the gantry may shake more and more due to the shaking of the cargo, and even cause the gantry to tip over and collapse, causing economic losses and threatening personal safety. For this reason, we propose an auxiliary support assembly for gantry cranes to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an auxiliary support assembly for a gantry crane, which solves the problem of lack of auxiliary support in the forward direction. When starting and stopping movement, the gantry may shake due to the inertia of the cargo. During the lifting process, the gantry may shake more and more due to the shaking of the cargo, and may even cause the gantry to tip over and collapse, causing economic losses and threatening personal safety.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary support assembly for a gantry crane, comprising two I-shaped rails, two supporting legs, two U-shaped plates, four rotating shafts, four rollers, a crossbeam, two driving mechanisms and two auxiliary supporting mechanisms, wherein the two I-shaped rails are fixedly mounted on the ground and are symmetrically distributed, the two supporting legs are respectively arranged above the two I-shaped rails, the two U-shaped plates are respectively fixedly mounted on the bottom ends of the two supporting legs, the four rotating shafts are respectively rotatably mounted on the two U-shaped plates and are symmetrically distributed in pairs, the four rollers are respectively fixedly sleeved on the corresponding rotating shafts and respectively conflict with the two I-shaped rails, the crossbeam is fixedly mounted on the top ends of the two supporting legs, the two driving mechanisms are respectively arranged on the two U-shaped plates, the two driving mechanisms are used to control the rotation of the four rollers, the two auxiliary supporting mechanisms are respectively arranged on the two supporting legs, and the two auxiliary supporting mechanisms are used to support and reinforce the two supporting legs.

[0009] Preferably, the auxiliary support mechanism includes a first motor, a screw, a cross bar, two oblique rods, two connecting seats and two auxiliary wheels. The support leg is a hollow structure. The first motor is fixedly mounted on the bottom inner wall of the support leg. The screw is fixedly mounted on the output shaft end of the first motor. The top of the screw is rotatably connected to the top inner wall of the support leg through a bearing seat. The cross bar is threadedly mounted on the screw. Vertical grooves are provided on the left and right sides of the support leg. The left and right ends of the cross bar extend to the outside of the support leg through the vertical grooves. The two oblique rods are fixedly mounted on the bottom of the cross bar and are symmetrically distributed. The two connecting seats are respectively fixedly mounted on the bottom ends of the two oblique rods, and the two auxiliary wheels are rotatably mounted on the two connecting seats.

[0010] Preferably, guide rods are fixedly installed in the two vertical grooves, and the cross bar is slidably installed on the two guide rods.

[0011] Preferably, the left and right sides of the supporting legs are provided with T-slots located below the corresponding vertical slots, T-blocks are slidably installed in the two T-slots, connecting rods are fixedly installed on the sides of the two T-blocks away from each other, and the ends of the two connecting rods away from each other are fixedly connected to the two diagonal rods respectively.

[0012] Preferably, the driving mechanism includes a second motor, a double-headed gear, two gears and two chains. The second motor is fixedly mounted on the rear side of the U-shaped plate. The output shaft end of the second motor extends into the U-shaped plate. The double-headed gear is fixedly sleeved on the output shaft end of the second motor. The two gears are respectively fixedly sleeved on two corresponding rotating shafts. The two gears are respectively located on the rear sides of the corresponding rollers. The ends of the two chains that are close to each other are both wound around the double-headed gear, and the ends of the two chains that are away from each other are respectively wound around the two gears.

[0013] Preferably, two symmetrically distributed limit blocks are fixedly mounted on the bottom of the two U-shaped plates, and the four limit blocks are in sliding contact with the corresponding I-shaped rails respectively.

[0014] (III) Beneficial effects

[0015] The utility model provides an auxiliary support assembly for a gantry crane, which has the following beneficial effects:

[0016] (1) The auxiliary support assembly for a gantry crane can control the two diagonal bars and the two auxiliary wheels to move up and down as needed by utilizing an auxiliary support mechanism composed of a first motor, a screw rod, a cross bar, two diagonal bars, two connecting seats and two auxiliary wheels, thereby supporting and reinforcing the two supporting legs, thereby improving the stability of the gantry crane when it is stopped and in operation, and avoiding tipping and collapse.

[0017] (2) The auxiliary support assembly for a gantry crane can simultaneously control the rotation of two corresponding rollers by utilizing a driving mechanism composed of a second motor, a double-headed gear, two gears and two chains, thereby driving the gantry crane to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the main view of the utility model;

[0020] Figure 3 It is a schematic diagram of the side structure of the U-shaped plate.

[0021] In the figure: 1. I-shaped track; 2. supporting leg; 3. U-shaped plate; 4. rotating shaft; 5. roller; 6. crossbeam; 7. first motor; 8. screw; 9. cross bar; 10. vertical slot; 11. oblique bar; 12. connecting seat; 13. auxiliary wheel; 14. guide rod; 15. T-slot; 16. T-block; 17. connecting rod; 18. second motor; 19. double-headed gear; 20. gear; 21. chain; 22. limit block. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-3 As shown, the utility model provides a technical solution: an auxiliary support assembly for a gantry crane, comprising two I-shaped rails 1, two support legs 2, two U-shaped plates 3, four rotating shafts 4, four rollers 5, a crossbeam 6, two driving mechanisms and two auxiliary support mechanisms, the two I-shaped rails 1 are fixedly installed on the ground and are symmetrically distributed, the two support legs 2 are respectively arranged above the two I-shaped rails 1, the two U-shaped plates 3 are respectively fixedly installed at the bottom ends of the two support legs 2, and the bottoms of the two U-shaped plates 3 are fixedly installed with two symmetrically distributed limit blocks 22, four limit blocks 22 are respectively in sliding contact with the corresponding I-shaped rails 1, and the U-shaped plate 3 can be effectively fixed on the I-shaped rail 1 through the four limit blocks 22, and the two supporting legs 2 are further reinforced. The four rotating shafts 4 are respectively rotatably installed on the two U-shaped plates 3 and are symmetrically distributed in pairs. The four rollers 5 are respectively fixedly sleeved on the corresponding rotating shafts 4 and respectively conflict with the two I-shaped rails 1. The crossbeam 6 is fixedly installed on the top of the two supporting legs 2. The two driving mechanisms are respectively arranged on the two U-shaped plates 3. The two driving mechanisms are used to control the four The roller 5 rotates, and the two auxiliary support mechanisms are respectively arranged on the two support legs 2, and the two auxiliary support mechanisms are used to support and reinforce the two support legs 2. The above-mentioned driving mechanism includes a second motor 18, a double-headed gear 19, two gears 20 and two chains 21. The second motor 18 is fixedly installed on the rear side of the U-shaped plate 3, and the second motor 18 is used to drive the double-headed gear 19 to rotate. It should be noted that the second motor 18 is a forward and reverse motor, and the two first motors 17 have the same model and power, and the two second motors 18 have the same model and power. The output shaft end of the machine 18 extends into the U-shaped plate 3, the double-headed gear 19 is fixedly mounted on the output shaft end of the second motor 18, the two gears 20 are fixedly mounted on the corresponding two rotating shafts 4, the two gears 20 are respectively located on the rear sides of the corresponding rollers 5, the ends of the two chains 21 that are close to each other are both wound around the double-headed gear 19, and the ends of the two chains 21 that are far away from each other are respectively wound around the two gears 20. By utilizing the combined action of the double-headed gear 19, the two gears 20 and the two chains 21, the two corresponding rollers 5 can be controlled to rotate at the same time.

[0024] In this embodiment, the auxiliary support mechanism includes a first motor 7, a screw 8, a cross bar 9, two inclined rods 11, two connecting seats 12 and two auxiliary wheels 13. The support leg 2 is a hollow structure. The first motor 7 is fixedly mounted on the bottom inner wall of the support leg 2. The first motor 7 is used to drive the screw 8 to rotate. It should be noted that the first motor 7 is a forward and reverse motor. The screw 8 is fixedly mounted on the output shaft end of the first motor 7. The screw 8 is used to drive the cross bar 9 to move up and down. The top of the screw 8 is rotatably connected to the top inner wall of the support leg 2 through a bearing seat. The cross bar 9 is threadedly mounted on the screw 8. Vertical grooves 10 are provided on the left and right sides of the support leg 2. The left and right ends of the cross bar 9 extend to the outside of the support leg 2 through the vertical grooves 10. The two inclined rods 11 are fixedly mounted on the bottom of the cross bar 9 and are symmetrically distributed. The connecting seats 12 are fixedly installed at the bottom ends of the two oblique rods 11, and the two auxiliary wheels 13 are rotatably installed on the two connecting seats 12. T-slots 15 located below the corresponding vertical slots 10 are provided on the left and right sides of the supporting legs 2. T-blocks 16 are slidably installed in the two T-slots 15. Connecting rods 17 are fixedly installed on the sides of the two T-blocks 16 away from each other. The ends of the two connecting rods 17 away from each other are fixedly connected to the two oblique rods 11, respectively. By utilizing the combined action of the T-slots 15, the T-blocks 16 and the connecting rods 17, the oblique rods 11 can be connected and reinforced to improve the stability of the movement of the two auxiliary wheels 13. Guide rods 14 are fixedly installed in the two vertical slots 10, and the cross bar 9 is slidably installed on the two guide rods 14. The stability of the up and down movement of the cross bar 9 can be improved through the two guide rods 14.

[0025] In this embodiment, a control switch is installed on the supporting leg 2 or next to the supporting leg 2, and the two first motors 7, the two second motors 18 and the control switch are electrically connected to the external power line through wires in sequence to form a loop. The control switch can control the start and stop of the two first motors 7 and the two second motors 18 respectively.

[0026] Through the above structure, the auxiliary support assembly for a gantry crane provided by the utility model can simultaneously control the corresponding two rollers 5 to rotate, thereby driving the gantry crane to move, and can also control the two inclined rods 11 and the two auxiliary wheels 13 to move up and down as needed, thereby supporting and reinforcing the two supporting legs 2, thereby improving the stability of the gantry crane when it is stopped and in operation, and avoiding rollover and collapse. When used specifically, after the hook is connected to the cargo, the cargo is lifted by the winding device, and the two second motors 18 are controlled to rotate forward, and the two second motors 18 drive the two double-headed gears 19 to rotate. By using the double-headed gear 19, the two gears 20 and the two chains 2 The combined effect of 1 can simultaneously control the corresponding four rollers 5 to rotate, thereby driving the gantry crane and the cargo to move to the right. When the cargo is heavy, the gantry crane will shake due to the huge inertia during the start and stop operation, and the two first motors 7 are controlled to rotate forward. The two first motors 7 drive the two screws 8 to rotate, thereby controlling the two cross bars 9 to move downward. The two cross bars 9 drive the four oblique bars 11 and the four auxiliary wheels 13 to move downward until the auxiliary wheels 13 touch the corresponding I-shaped rails 1, completing the support and reinforcement of the two support legs 2, and then controlling the two second motors 18 to operate, which greatly improves the stability and safety of the gantry crane in hoisting cargo.

[0027] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An auxiliary support assembly for a gantry crane, characterized in that: The invention comprises two I-shaped rails (1), two supporting legs (2), two U-shaped plates (3), four rotating shafts (4), four rollers (5), a crossbeam (6), two driving mechanisms and two auxiliary supporting mechanisms, wherein the two I-shaped rails (1) are fixedly mounted on the ground and are symmetrically distributed, the two supporting legs (2) are respectively arranged above the two I-shaped rails (1), the two U-shaped plates (3) are respectively fixedly mounted at the bottom ends of the two supporting legs (2), and the four rotating shafts (4) are respectively rotatably mounted on the two U-shaped plates (3). The four rollers (5) are respectively fixedly mounted on the corresponding rotating shafts (4) and respectively abut against the two I-shaped rails (1); the crossbeam (6) is fixedly mounted on the top ends of the two supporting legs (2); the two driving mechanisms are respectively arranged on the two U-shaped plates (3); the two driving mechanisms are used to control the four rollers (5) to rotate; the two auxiliary supporting mechanisms are respectively arranged on the two supporting legs (2); the two auxiliary supporting mechanisms are used to support and reinforce the two supporting legs (2).

2. The auxiliary support assembly for a gantry crane according to claim 1, characterized in that: The auxiliary support mechanism comprises a first motor (7), a screw (8), a cross bar (9), an inclined rod (11), two connecting seats (12) and two auxiliary wheels (13); the support leg (2) is a hollow structure; the first motor (7) is fixedly mounted on the inner wall of the bottom of the support leg (2); the screw (8) is fixedly mounted on the output shaft end of the first motor (7); the top end of the screw (8) is rotatably connected to the inner wall of the top of the support leg (2) through a bearing seat; the cross bar (9) is threadedly mounted on the screw (8); vertical grooves (10) are provided on the left and right sides of the support leg (2); the left and right ends of the cross bar (9) extend to the outside of the support leg (2) through the vertical grooves (10); the two inclined rods (11) are fixedly mounted on the bottom of the cross bar (9) and are symmetrically distributed; the two connecting seats (12) are respectively fixedly mounted on the bottom ends of the two inclined rods (11); and the two auxiliary wheels (13) are respectively rotatably mounted on the two connecting seats (12).

3. The auxiliary support assembly for a gantry crane according to claim 2, characterized in that: Guide rods (14) are fixedly installed in the two vertical grooves (10), and the cross rod (9) is slidably installed on the two guide rods (14).

4. The auxiliary support assembly for a gantry crane according to claim 3, characterized in that: The left and right sides of the support leg (2) are each provided with a T-shaped slot (15) located below the corresponding vertical slot (10), a T-shaped block (16) is slidably mounted in each of the two T-shaped slots (15), a connecting rod (17) is fixedly mounted on the side of the two T-shaped blocks (16) away from each other, and the ends of the two connecting rods (17) away from each other are respectively fixedly connected to the two oblique rods (11).

5. The auxiliary support assembly for a gantry crane according to claim 1, characterized in that: The driving mechanism comprises a second motor (18), a double-headed gear (19), two gears (20) and two chains (21); the second motor (18) is fixedly mounted on the rear side of the U-shaped plate (3); the output shaft end of the second motor (18) extends into the U-shaped plate (3); the double-headed gear (19) is fixedly sleeved on the output shaft end of the second motor (18); the two gears (20) are respectively fixedly sleeved on the two corresponding rotating shafts (4); the two gears (20) are respectively located on the rear sides of the corresponding rollers (5); the ends of the two chains (21) that are close to each other are both wound around the double-headed gear (19); and the ends of the two chains (21) that are far away from each other are respectively wound around the two gears (20).

6. The auxiliary support assembly for a gantry crane according to claim 5, characterized in that: Two symmetrically distributed limit blocks (22) are fixedly mounted on the bottom of each of the two U-shaped plates (3), and the four limit blocks (22) are in sliding contact with the corresponding I-shaped rails (1) respectively.

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