One-way truss leg portal crane

Abstract

The utility model discloses a one-way truss leg portal crane, which relates to the technical field of portal cranes and comprises two suspension beams, fixing frames are fixed in the middles of the lower sides of the two suspension beams, and a cross beam is connected between the two fixing frames. A first electric sports car is fixed to the left end of the upper side of the moving beam, the upper portion of the first electric sports car and the upper portion of the sliding sports car are both arranged on the cross beam, the bottom of the moving beam is connected with a second electric sports car, and the bottom of the second electric sports car is connected with an electric hoist; the first electric sports car and the second electric sports car are the same in structure. The first electric sports car, the second electric sports car and the sliding sports car are driven to move through meshing transmission and are not prone to slipping, so that the accuracy of the movement amount of the movable beam and the electric hoist is high, the first electric sports car and the second electric sports car are in bilateral four-wheel drive, inclination during movement is avoided, and then the lifting work is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to a one-way truss leg gantry crane. Background Art

[0002] Gantry crane is a variation of bridge crane, also known as gantry crane, which is a mechanical equipment mainly used to lift overweight objects or rotate and transport multiple objects. It has the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. It is mainly used for outdoor cargo yards, material yards, and bulk cargo loading and unloading operations. Gantry cranes are characterized by their main components such as the gantry beam and hoist mechanism that are responsible for bearing a large amount of load and load.

[0003] At present, when the existing gantry crane is in use, the movement of the electric hoist on the beam arm relies on the electric sports car thereon. The electric sports car drives the rollers on it to rotate through the motor, and rubs against the beam arm to make the electric sports car move on the beam arm, thereby driving the electric hoist to move. Since there is sliding friction between the rollers on the electric sports car and the beam arm, the friction force is small and it is easy to slip, resulting in low accuracy of the movement of the electric hoist on the beam arm. In addition, the two sets of roller mechanisms on the electric sports car, one set is directly driven by the motor, and the other set is passive, which makes it easy to tilt during movement, thereby affecting the lifting work. Utility Model Content

[0004] The utility model aims to provide a one-way truss leg gantry crane to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-way truss leg gantry crane, comprising:

[0006] Two suspension beams, a fixing frame is fixed to the middle of the lower side of the two suspension beams, a cross beam is connected between the two fixing frames, a fixing beam is fixed between the two suspension beams, and a plurality of connecting members are connected between the fixing beam and the cross beam;

[0007] A moving beam, a first electric sports car is fixed to the upper left end of the moving beam, a sliding sports car is fixed to the upper left part of the moving beam, the upper parts of the first electric sports car and the sliding sports car are both arranged on the crossbeam, a second electric sports car is connected to the bottom of the moving beam, and an electric hoist is connected to the bottom of the second electric sports car;

[0008] The cross beam and the movable beam are both provided with racks. The first electric sports car and the second electric sports car have the same structure. The first electric sports car and the second electric sports car both include a first bracket seat. The left and right parts of the front and rear inner walls of the first bracket seat are rotatably connected with transition gears. A first driven gear is fixed to the side of the transition gear away from the inner wall of the first bracket seat. The first driven gear is meshed with the rack, and a transmission assembly is provided inside the first bracket seat.

[0009] Preferably, a driving motor is installed on the front side of the first bracket seat, and the output end of the driving motor extends into the first bracket seat and is connected to a driving gear. The driving gear is located at the lower part between the two transition gears in the front, and the driving gear is meshingly connected with the two transition gears located in the front. The driving motor drives the driving gear to rotate, and the rotation of the driving gear can drive the two transition gears to rotate, thereby driving the first driven gear to rotate. The first driven gear rotates and meshes with the rack, so that the first electric sports car or the second electric sports car moves.

[0010] Preferably, the transmission assembly includes a transmission shaft, front and rear ends of the transmission shaft are rotatably connected with the front and rear inner walls of the first bracket seat, the transmission shaft is located below the driving gear, the front and rear parts of the transmission shaft are fixedly sleeved with the first transmission gear, the first transmission gear located in the front is meshed and connected with the driving gear, the upper side of the first transmission gear located in the rear is meshed with a second transmission gear, the second transmission gear is rotatably connected with the rear inner wall of the first bracket seat, the second transmission gear is meshed and connected with the two transition gears located in the rear, the size of the second transmission gear is the same as that of the driving gear, the driving gear rotates to drive the first transmission gear at the front of the transmission shaft to rotate, the first transmission gear at the front of the transmission shaft drives the first transmission gear located at the rear of the transmission shaft to rotate through the transmission shaft, and then drives the second transmission gear to rotate, the second transmission gear rotates and drives the two transition gears located in the rear to rotate, so that the four first driven gears rotate synchronously.

[0011] Preferably, a first fixed shaft is provided on both the front and rear sides of the transmission shaft, the front and rear ends of the first fixed shaft are respectively fixedly connected to the front and rear inner walls of the first bracket seat, and a first roller is rotatably sleeved on the first fixed shaft.

[0012] Preferably, the front and rear sides of the cross beam and the movable beam are both provided with sliding grooves, the rack is fixed on the bottom wall of the sliding groove, and the first driven gear is nested in the sliding groove.

[0013] Preferably, the sliding sports car includes a second bracket seat, the bottom of the second bracket seat is connected to the upper side wall of the moving beam, the left and right parts of the front and rear inner walls of the second bracket seat are rotatably connected to the second driven gear, the second driven gear is nested in the slide groove, the second driven gear is meshingly connected to the rack, a second fixed shaft is fixed inside the second bracket seat, a second roller is rotatably sleeved on the second fixed shaft, and the upper side of the second roller is in conflict with the bottom wall of the cross beam.

[0014] Preferably, the bottom of the first bracket seat on the first electric sports car is connected to the upper side wall of the moving beam, the top of the first roller on the first electric sports car conflicts with the bottom wall of the cross beam, the bottom of the first bracket seat on the second electric sports car is connected to the electric hoist, and the top of the first roller on the second electric sports car conflicts with the bottom wall of the moving beam.

[0015] Preferably, reinforcing plates are fixed between the front and rear side walls of the fixing frame and the bottom of the suspension beam, and the reinforcing plates can improve the connection strength between the fixing frame and the suspension beam.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. Racks are provided on both the crossbeam and the moving beam, and corresponding first driven gears are provided in the first electric sports car and the second electric sports car, and corresponding second driven gears are provided on the sliding sports car. The first electric sports car, the second electric sports car and the sliding sports car are driven to move through meshing transmission, which is not easy to slip, so that the moving amount of the moving beam is highly accurate, and the moving amount of the electric hoist is highly accurate;

[0018] 2. By arranging a transmission assembly in the first bracket seat, the four first driven gears in the first bracket seat rotate synchronously under the transmission of the transmission assembly, so that the original single-side double drive becomes double-side four drive, avoiding tilting during movement, thereby avoiding affecting the lifting work;

[0019] 3. By fixing a fixed beam between the two suspension beams, a plurality of connecting parts are connected between the fixed beam and the cross beam, and reinforcing plates are fixed between the front and rear side walls of the fixed frame and the bottom of the suspension beam, the stability of the connection between the cross beam and the two suspension beams is effectively improved, making the connection firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 This is a schematic diagram of a first electric sports car of the utility model;

[0024] Figure 4 It is a transmission schematic diagram of the transition gear and transmission assembly of the utility model;

[0025] Figure 5 It is a schematic diagram of a sliding sports car of the present utility model.

[0026] Description of reference numerals:

[0027] 1. Cantilever beam; 2. Fixed frame; 3. Crossbeam; 4. Fixed beam; 5. Connector; 6. Moving beam; 7. First electric sports car; 8. Sliding sports car; 9. Second electric sports car; 10. Electric hoist; 11. Rack; 12. First bracket seat; 13. Transition gear; 14. First driven gear; 15. Driving motor; 16. Driving gear; 17. Transmission shaft; 18. First transmission gear; 19. Second transmission gear; 20. First fixed shaft; 21. First roller; 22. Second bracket seat; 23. Second driven gear; 24. Second fixed shaft; 25. Second roller; 26. Reinforcement plate. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The utility model provides Figures 1 to 5 A one-way truss leg gantry crane is shown, comprising:

[0030] Two suspension beams 1, a fixing frame 2 is fixed to the middle of the lower side of the two suspension beams 1, and a cross beam 3 is connected between the two fixing frames 2;

[0031] A moving beam 6, a first electric sports car 7 is fixed to the upper left end of the moving beam 6, a sliding sports car 8 is fixed to the upper left part of the moving beam 6, the upper parts of the first electric sports car 7 and the sliding sports car 8 are both arranged on the crossbeam 3, a second electric sports car 9 is connected to the bottom of the moving beam 6, and an electric hoist 10 is connected to the bottom of the second electric sports car 9;

[0032] A rack 11 is provided on the cross beam 3 and the moving beam 6. The first electric sports car 7 and the second electric sports car 9 have the same structure. The first electric sports car 7 and the second electric sports car 9 both include a first bracket seat 12. The left and right parts of the front and rear inner walls of the first bracket seat 12 are rotatably connected with a transition gear 13. A first driven gear 14 is fixed to the side of the transition gear 13 away from the inner wall of the first bracket seat 12. The first driven gear 14 is meshed with the rack 11, and a transmission component is provided inside the first bracket seat 12.

[0033] A driving motor 15 is installed on the front side of the first bracket seat 12. The output end of the driving motor 15 extends into the first bracket seat 12 and is connected to a driving gear 16. The driving gear 16 is located at the lower part between the two transition gears 13 in front. The driving gear 16 is meshed and connected with the two transition gears 13 in front. The driving motor 15 drives the driving gear 16 to rotate. The rotation of the driving gear 16 can drive the two transition gears 13 to rotate, thereby driving the first driven gear 14 to rotate. The first driven gear 14 rotates and meshes with the rack 11, so that the first electric sports car 7 or the second electric sports car 9 moves.

[0034] The transmission assembly includes a transmission shaft 17, the front and rear ends of the transmission shaft 17 are rotatably connected with the front and rear inner walls of the first bracket seat 12, the transmission shaft 17 is located below the driving gear 16, and the front and rear parts of the transmission shaft 17 are fixedly sleeved with a first transmission gear 18, the first transmission gear 18 located in the front is meshed with the driving gear 16, and the upper side of the first transmission gear 18 located at the rear is meshed with a second transmission gear 19, the second transmission gear 19 is rotatably connected with the rear inner wall of the first bracket seat 12, and the second transmission gear 19 is meshed with the two transition gears 13 located at the rear. The size of the second transmission gear 19 is the same as that of the driving gear 16. The driving gear 16 rotates to drive the first transmission gear 18 at the front of the transmission shaft 17 to rotate, and the first transmission gear 18 at the front of the transmission shaft 17 rotates through the transmission shaft 17 to drive the first transmission gear 18 located at the rear of the transmission shaft 17 to rotate, and then drives the second transmission gear 19 to rotate, and the second transmission gear 19 rotates to drive the two transition gears 13 located at the rear to rotate, so that the four first driven gears 14 rotate synchronously.

[0035] A first fixed shaft 20 is disposed at both the front and rear sides of the transmission shaft 17 . The front and rear ends of the first fixed shaft 20 are fixedly connected to the front and rear inner walls of the first bracket seat 12 , respectively. A first roller 21 is rotatably sleeved on the first fixed shaft 20 .

[0036] Slide grooves are provided on both the front and rear sides of the cross beam 3 and the moving beam 6 , the rack 11 is fixed on the bottom wall of the slide groove, and the first driven gear 14 is nested in the slide groove.

[0037] The sliding sports car 8 includes a second bracket seat 22, the bottom of the second bracket seat 22 is connected to the upper side wall of the moving beam 6, the left and right parts of the front and rear inner walls of the second bracket seat 22 are rotatably connected with a second driven gear 23, the second driven gear 23 is nested in the slide groove, the second driven gear 23 is meshed and connected with the rack 11, a second fixed shaft 24 is fixed inside the second bracket seat 22, a second roller 25 is rotatably sleeved on the second fixed shaft 24, and the upper side of the second roller 25 is in conflict with the bottom wall of the cross beam 3.

[0038] The bottom of the first bracket seat 12 located on the first electric sports car 7 is connected to the upper side wall of the moving beam 6, the top of the first roller 21 located on the first electric sports car 7 conflicts with the bottom wall of the crossbeam 3, the bottom of the first bracket seat 12 located on the second electric sports car 9 is connected to the electric hoist 10, and the top of the first roller 21 located on the second electric sports car 9 conflicts with the bottom wall of the moving beam 6.

[0039] In the utility model, when the moving beam 6 moves at the bottom of the cross beam 3, the driving motor 15 on the first electric sports car 7 works to drive the driving gear 16 to rotate. The rotation of the driving gear 16 can drive the two transition gears 13 located in the front to rotate, thereby driving the two first driven gears 14 located in the front to rotate. At the same time, the rotation of the driving gear 16 drives the first transmission gear 18 at the front of the transmission shaft 17 to rotate. The rotation of the first transmission gear 18 at the front of the transmission shaft 17 drives the first transmission gear 18 located at the rear of the transmission shaft 17 to rotate through the transmission shaft 17, and then drives the second transmission gear 19 to rotate. The rotation of the second transmission gear 19 drives the two transition gears 13 located at the rear to rotate, and then The two first driven gears 14 at the rear are driven to rotate, so that the four first driven gears 14 rotate synchronously. The four first driven gears 14 rotate synchronously and mesh with the corresponding racks 11 at the bottom thereof, so that the first electric sports car 7 moves on the beam 3. The movement of the first electric sports car 7 drives the moving beam 6 to move at the bottom of the beam 3, which is not easy to slip, so that the moving beam 6 moves with high accuracy, and the original single-sided double drive is changed to double-sided four-drive, avoiding tilting during movement, thereby avoiding affecting the lifting work. Since the second electric sports car 9 has the same structure as the first electric sports car 7, the same principle enables the electric hoist 10 to move at the bottom of the moving beam 6, and the electric hoist 10 moves with high accuracy.

[0040] like Figure 1 As shown, a fixed beam 4 is fixed between the two suspension beams 1, a plurality of connecting parts 5 are connected between the fixed beam 4 and the cross beam 3, and reinforcing plates 26 are fixed between the front and rear side walls of the fixed frame 2 and the bottom of the suspension beam 1. The reinforcing plates 26 can improve the connection strength between the fixed frame 2 and the suspension beam 1.

[0041] In the utility model, a fixed beam 4 is fixed between the two suspension beams 1, and the cross beam 3 is connected to the fixed beam 4 through a plurality of connecting members 5, thereby improving the stability of the connection between the suspension beams 1 and the cross beams 3. At the same time, reinforcing plates 26 are fixed between the front and rear side walls of the fixed frame 2 and the bottom of the suspension beam 1, thereby improving the connection strength between the fixed frame 2 and the suspension beam 1, thereby improving the supporting effect on the cross beam 3, and making the connection structure between the two suspension beams 1 and the cross beam 3 stable and reliable.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A one-way truss leg gantry crane, characterized in that: include: Two suspension beams (1), a fixed frame (2) being fixed at the middle of the lower side of each of the two suspension beams (1), a cross beam (3) being connected between the two fixed frames (2), a fixed beam (4) being fixed between the two suspension beams (1), and a plurality of connecting members (5) being connected between the fixed beam (4) and the cross beam (3); A moving beam (6), a first electric sports car (7) being fixed to the upper left end of the moving beam (6), a sliding sports car (8) being fixed to the upper left portion of the moving beam (6), the upper portions of the first electric sports car (7) and the sliding sports car (8) being arranged on the crossbeam (3), the bottom of the moving beam (6) being connected to a second electric sports car (9), and the bottom of the second electric sports car (9) being connected to an electric hoist (10); The cross beam (3) and the moving beam (6) are both provided with a rack (11); the first electric sports car (7) and the second electric sports car (9) have the same structure; the first electric sports car (7) and the second electric sports car (9) both include a first bracket seat (12); the left and right parts of the front and rear inner walls of the first bracket seat (12) are both rotatably connected to a transition gear (13); a first driven gear (14) is fixed to a side of the transition gear (13) away from the inner wall of the first bracket seat (12); the first driven gear (14) is meshingly connected to the rack (11); and a transmission assembly is provided inside the first bracket seat (12).

2. A one-way truss leg gantry crane according to claim 1, characterized in that: A driving motor (15) is installed on the front side of the first bracket seat (12); an output end of the driving motor (15) extends into the first bracket seat (12) and is connected to a driving gear (16); the driving gear (16) is located at a lower portion between the two transition gears (13) at the front; the driving gear (16) is meshingly connected to the two transition gears (13) at the front.

3. A one-way truss leg gantry crane according to claim 2, characterized in that: The transmission assembly comprises a transmission shaft (17), the front and rear ends of the transmission shaft (17) are rotatably connected to the front and rear inner walls of the first bracket seat (12), the transmission shaft (17) is located below the driving gear (16), the front and rear parts of the transmission shaft (17) are both fixedly sleeved with a first transmission gear (18), the first transmission gear (18) located at the front is meshingly connected to the driving gear (16), the upper side of the first transmission gear (18) located at the rear is meshingly connected to a second transmission gear (19), the second transmission gear (19) is rotatably connected to the rear inner wall of the first bracket seat (12), the second transmission gear (19) is meshingly connected to the two transition gears (13) located at the rear, and the size of the second transmission gear (19) is the same as that of the driving gear (16).

4. A one-way truss leg gantry crane according to claim 3, characterized in that: A first fixed shaft (20) is provided at both the front and rear sides of the transmission shaft (17); the front and rear ends of the first fixed shaft (20) are respectively fixedly connected to the front and rear inner walls of the first bracket seat (12); and a first roller (21) is rotatably sleeved on the first fixed shaft (20).

5. The one-way truss leg gantry crane according to claim 1, characterized in that: The cross beam (3) and the movable beam (6) are provided with sliding grooves on both the front and rear sides, the rack (11) is fixed on the bottom wall of the sliding groove, and the first driven gear (14) is nested in the sliding groove.

6. The one-way truss leg gantry crane according to claim 5, characterized in that: The sliding sports car (8) comprises a second bracket seat (22), the bottom of the second bracket seat (22) is connected to the upper side wall of the moving beam (6), the left and right parts of the front and rear inner walls of the second bracket seat (22) are both rotatably connected to second driven gears (23), the second driven gear (23) is nested in the slide groove, the second driven gear (23) is meshingly connected to the rack (11), a second fixed shaft (24) is fixed inside the second bracket seat (22), a second roller (25) is rotatably sleeved on the second fixed shaft (24), and the upper side of the second roller (25) is in contact with the bottom wall of the cross beam (3).

7. The one-way truss leg gantry crane according to claim 4, characterized in that: The bottom of the first bracket seat (12) located on the first electric sports car (7) is connected to the upper side wall of the moving beam (6), and the top of the first roller (21) located on the first electric sports car (7) is in contact with the bottom wall of the cross beam (3). The bottom of the first bracket seat (12) located on the second electric sports car (9) is connected to the electric hoist (10), and the top of the first roller (21) located on the second electric sports car (9) is in contact with the bottom wall of the moving beam (6).

8. The one-way truss leg gantry crane according to claim 1, characterized in that: Reinforcement plates (26) are fixed between the front and rear side walls of the fixed frame (2) and the bottom of the suspension beam (1).

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