Trolley frame of double-beam bridge crane

Abstract

The utility model belongs to the technical field of double-beam bridge cranes, and particularly relates to a double-beam bridge crane trolley frame which comprises a movable frame and a winch, the winch is mounted on the lower surface of the movable frame, guide wheels are rotatably connected to the surfaces of the two sides of the movable frame, adjusting grooves are formed in the surfaces of the two sides of the movable frame, and the guide wheels are rotatably connected to the guide wheels. The adjusting grooves are symmetrically formed, adjusting supports are arranged in inner cavities of the adjusting grooves in a sliding mode, rotating connecting bases are rotationally arranged on the surfaces of the end portions of the adjusting supports, and the end portions of the adjusting supports are rotationally connected with the guide wheels through the rotating connecting bases; the distance between the guide wheels is adjusted, so that the movable frame can be matched with double-beam bridge cranes with different widths, the production model number of the movable frame can be reduced, the production cost of the movable frame is reduced, meanwhile, the driving screw can push the movable frame to move under the matching action of the guide wheels under the action of surface threads, and the movable frame is convenient to use. And the control accuracy of the movable frame in the moving process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-girder bridge cranes, in particular to a trolley frame of a double-girder bridge crane. Background Technique

[0002] A bridge crane is a lifting equipment that spans over workshops, warehouses, and yards for material lifting. The two ends of the bridge crane are seated on tall cement columns or metal brackets, resembling a bridge in shape. The bridge of the bridge crane runs longitudinally along the tracks laid on both sides of the elevated racks, and can make full use of the space under the bridge to lift materials without being hindered by ground equipment. Bridge cranes can be divided into three types: ordinary bridge cranes, simple girder bridge cranes, and metallurgical special bridge cranes. The simple girder bridge crane is also called a girder crane, and its structural composition is similar to that of an ordinary bridge crane, with a smaller lifting capacity, span, and working speed. The main girder of the bridge is a simple cross-section beam composed of I-beams or other steel sections and steel plates. A manual hoist or an electric hoist is equipped with a simple trolley as the lifting trolley, and the trolley generally runs on the lower flange of the I-beam.

[0003] Currently, the invention patent with the publication number of CN107399676B discloses a double-girder bridge crane. The balance device is designed as three support arms, so that the goods at the lower end are subjected to forces in three directions during lifting, preventing the goods from shaking during lifting and transportation, ensuring its balance and stability, and improving the safety of lifting goods by the double-girder bridge crane. To solve the problem that when the existing double-girder bridge crane lifts goods, most of them lift the goods vertically along multiple lifting ropes. This method makes the goods easy to shake during transportation and the lifting is unstable, which not only places a large load on the lifting ropes, but also threatens the people and objects near the lifted goods.

[0004] The trolley on the existing double-girder bridge crane is moved by wire rope traction. During the lifting process, the movement accuracy of the trolley is poor, and the goods cannot be accurately lifted. At the same time, the size of the trolley frame needs to be adapted to the size of the double-girder bridge. The trolley frames used on double-girders with different widths cannot be universal, which will increase the production cost of the double-girder bridge crane. To solve the above problems, a trolley frame of a double-girder bridge crane is proposed in this application. Content of the Utility Model

[0005] (I) Purpose of the Utility Model

[0006] To solve the technical problems existing in the background art, the present utility model proposes a trolley frame of a double-girder bridge crane. By adjusting the distance between the guide wheels, the moving frame can be adapted to double-girder bridge cranes of different widths, reducing the production models of the moving frame and lowering the production cost of the moving frame. At the same time, under the action of the surface threads of the driving screw, the driving screw can push the moving frame to move under the cooperation of the guide wheels, improving the accuracy of control when the moving frame moves, so as to solve the problems proposed in the background art.

[0007] (II) Technical Solution

[0008] To solve the above technical problems, the present utility model provides a trolley frame of a double-girder bridge crane, including a moving frame and a winch. The winch is installed on the lower surface of the moving frame. Guide wheels are rotatably connected to both side surfaces of the moving frame. Adjustment grooves are provided on both side surfaces of the moving frame, and the adjustment grooves are symmetrically arranged. Adjustment brackets are slidably provided in the inner cavities of the adjustment grooves. Rotating connection seats are rotatably provided on the end surfaces of the adjustment brackets, and the ends of the adjustment brackets are rotatably connected to the guide wheels through the rotating connection seats;

[0009] A driving screw hole is penetrated through the surface of the moving frame, and the driving screw holes are symmetrically distributed. Driving screws are threadedly connected in the inner cavities of the driving screw holes.

[0010] Preferably, one end of the driving screw is rotatably connected to a fixed seat, and the fixed seat is in a T-shaped structure.

[0011] Preferably, a gear box is provided at the end of the driving screw away from the fixed seat, and a driving motor is installed on the surface of the gear box.

[0012] Preferably, a driving gear is rotatably provided in the inner cavity of the gear box. The power output end of the driving motor penetrates through the wall of the gear box cavity, and the power output end of the driving motor is in transmission connection with the driving gear.

[0013] Preferably, driven gears are rotatably provided in the inner cavity of the gear box. The driven gears are symmetrically distributed, and the driven gears are meshed with the driving gear.

[0014] Preferably, the ends of the driving screws penetrate through the wall of the gear box cavity, and the ends of the driving screws are in transmission connection with the driven gears.

[0015] Preferably, locking screws are threadedly connected to the positions on the surface of the moving frame corresponding to the adjustment grooves, and the locking screws are abutted against the surfaces of the adjustment brackets.

[0016] The above technical solution of the present utility model has the following beneficial technical effects:

[0017] 1. In the present utility model, the guide wheel is rotatably connected to the end of the adjustment bracket through a rotating connection seat. The adjustment bracket is inserted into the adjustment slot. By pulling out the adjustment bracket from the adjustment slot, the distance between the guide wheels can be adjusted. After adjustment, the locking screw can lock the adjustment bracket. By adjusting the distance between the guide wheels, the mobile frame can be adapted to double-girder bridge cranes of different widths, reducing the production models of the mobile frame and lowering the production cost of the mobile frame.

[0018] 2. In the present utility model, the drive motor drives the drive gear in the gearbox. The drive gear drives the driven gear, and the driven gear drives the drive screw. Under the action of the surface thread, the drive screw can push the mobile frame to move under the cooperation of the guide wheels, improving the accuracy of controlling the mobile frame during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of a small frame of a double-girder bridge crane of the present utility model;

[0020] Figure 2 is the schematic diagram of the guide wheel adjustment structure of a small frame of a double-girder bridge crane of the present utility model;

[0021] Figure 3 is the schematic diagram of the mobile frame drive structure of a small frame of a double-girder bridge crane of the present utility model;

[0022] Figure 4 is the schematic diagram of the gearbox structure of a small frame of a double-girder bridge crane of the present utility model.

[0023] REFERENCE NUMERALS:

[0024] 1, mobile frame; 2, winch; 3, adjustment slot; 4, adjustment bracket; 5, rotating connection seat; 6, guide wheel; 7, locking screw; 8, drive screw hole; 9, drive screw; 10, fixed seat; 11, gearbox; 12, drive motor; 13, drive gear; 14, driven gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0026] As Figures 1-4As shown in the figure, a trolley frame of a double-girder bridge crane proposed by the present utility model includes a moving frame 1 and a winch 2. The winch 2 is installed on the lower surface of the moving frame 1. Guide wheels 6 are rotatably connected to both side surfaces of the moving frame 1. Adjustment grooves 3 are formed on both side surfaces of the moving frame 1. The adjustment grooves 3 are arranged symmetrically. Adjustment brackets 4 are slidably arranged in the inner cavities of the adjustment grooves 3. Rotating connection seats 5 are rotatably arranged on the end surfaces of the adjustment brackets 4. The ends of the adjustment brackets 4 are rotatably connected to the guide wheels 6 through the rotating connection seats 5.

[0027] It should be noted that the guide wheel 6 is rotatably connected to the end of the adjustment bracket 4 through the rotating connection seat 5. The adjustment bracket 4 is inserted into the adjustment groove 3. By pulling out the adjustment bracket 4 from the adjustment groove 3, the distance between the guide wheels 6 can be adjusted. After adjustment, the locking screw 7 can lock the adjustment bracket 4. By adjusting the distance between the guide wheels 6, the moving frame 1 can be adapted to double-girder bridge cranes of different widths, reducing the production models of the moving frame 1 and lowering the production cost of the moving frame 1.

[0028] In this embodiment, as Figure 3 and Figure 4 shown, one end of the driving screw 9 is rotatably connected to a fixed seat 10. The fixed seat 10 has a T-shaped structure.

[0029] It should be noted that the fixed seat 10 can fix one end of the driving screw 9.

[0030] In this embodiment, as Figure 3 and Figure 4 shown, a gear box 11 is provided at the end of the driving screw 9 away from the fixed seat 10. A driving motor 12 is installed on the surface of the gear box 11.

[0031] It should be noted that the driving motor 12 can drive the gear box 11.

[0032] In this embodiment, as Figure 3 and Figure 4 shown, driving screw holes 8 penetrate through the surface of the moving frame 1. The driving screw holes 8 are distributed symmetrically. Driving screws 9 are threadedly connected in the inner cavities of the driving screw holes 8. A driving gear 13 is rotatably arranged in the inner cavity of the gear box 11. The power output end of the driving motor 12 penetrates through the wall of the gear box 11 cavity, and the power output end of the driving motor 12 is in transmission connection with the driving gear 13. A driven gear 14 is rotatably arranged in the inner cavity of the gear box 11. The driven gears 14 are distributed symmetrically, and the driven gears 14 are meshed with the driving gear 13. The ends of the driving screws 9 penetrate through the wall of the gear box 11 cavity, and the ends of the driving screws 9 are in transmission connection with the driven gears 14.

[0033] It should be noted that the drive motor 12 drives the drive gear 13 in the gearbox 11, the drive gear 13 drives the driven gear 14, the driven gear 14 drives the drive screw 9, and the drive screw 9 can push the moving carriage 1 to move under the cooperation of the guide wheels 6 under the action of the surface thread, which can improve the accuracy of the control when the moving carriage 1 moves.

[0034] In this embodiment, as Figure 1 shown, locking lead screws 7 are threadedly connected to the positions on the surface of the moving carriage 1 corresponding to the adjustment slots 3, and the locking lead screws 7 are all abutted against the surface of the adjustment bracket 4.

[0035] It should be noted that by inserting and connecting, and pulling out the adjustment bracket 4 from the adjustment slot 3, the distance between the guide wheels 6 can be adjusted, and after adjustment, the locking lead screw 7 can lock the adjustment bracket 4.

[0036] The working principle and usage process of the present utility model: Both ends of the drive screw 9 are fixed on the double-beam bridge through the gearbox 11 and the fixed seat 10 respectively. The drive motor 12 drives the drive gear 13 in the gearbox 11, the drive gear 13 drives the driven gear 14, the driven gear 14 drives the drive screw 9, and the drive screw 9 can push the moving carriage 1 to move under the cooperation of the guide wheels 6 under the action of the surface thread, which can improve the accuracy of the control when the moving carriage 1 moves. The guide wheels 6 are rotatably connected to the ends of the adjustment bracket 4 through the rotating connection seat 5. The adjustment bracket 4 is inserted into the adjustment slot 3. By pulling out the adjustment bracket 4 from the adjustment slot 3, the distance between the guide wheels 6 can be adjusted, and after adjustment, the locking lead screw 7 can lock the adjustment bracket 4. By adjusting the distance between the guide wheels 6, the moving carriage 1 can be adapted to double-beam bridge cranes of different widths, which can reduce the production models of the moving carriage 1 and lower the production cost of the moving carriage 1.

[0037] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all changes and modification examples falling within the scope and boundary of the appended claims or equivalent forms of such scope and boundary.

Claims

1. A trolley frame of a double-girder bridge crane, comprising a moving frame (1) and a winch (2), wherein the winch (2) is installed on the lower surface of the moving frame (1), and is characterized in that, Guide wheels (6) are rotatably connected to both side surfaces of the moving vehicle frame (1). Adjustment grooves (3) are provided on both side surfaces of the moving vehicle frame (1). The adjustment grooves (3) are arranged symmetrically. Adjustment brackets (4) are slidably provided in the inner cavities of the adjustment grooves (3). Rotating connection seats (5) are rotatably provided on the end surfaces of the adjustment brackets (4). The ends of the adjustment brackets (4) are rotatably connected to the guide wheels (6) through the rotating connection seats (5). A driving screw hole (8) is penetrated through the surface of the moving vehicle frame (1). The driving screw holes (8) are distributed symmetrically. Driving screws (9) are threadedly connected in the inner cavities of the driving screw holes (8).

2. The trolley frame of a double-girder overhead crane according to claim 1, characterized in that, One end of the driving screw (9) is rotatably connected to a fixed seat (10). The fixed seat (10) has a T-shaped structure.

3. The trolley frame of a double-girder bridge crane according to claim 2, characterized in that, A gear box (11) is provided at the end of the driving screw (9) away from the fixed seat (10). A driving motor (12) is installed on the surface of the gear box (11).

4. The trolley frame of a double-girder overhead crane according to claim 3, characterized in that, A driving gear (13) is rotatably provided in the inner cavity of the gear box (11). The power output end of the driving motor (12) penetrates through the wall of the gear box (11), and the power output end of the driving motor (12) is in transmission connection with the driving gear (13).

5. A trolley frame of a double-girder bridge crane according to claim 4, characterized in that, A driven gear (14) is rotatably provided in the inner cavity of the gear box (11). The driven gears (14) are distributed symmetrically, and the driven gears (14) are engaged with the driving gear (13).

6. The trolley frame of a double-girder overhead crane according to claim 5, characterized in that, The ends of the driving screws (9) penetrate through the wall of the gear box (11), and the ends of the driving screws (9) are in transmission connection with the driven gears (14).

7. A trolley frame of a double-girder bridge crane according to claim 6, characterized in that, Locking screw rods (7) are threadedly connected to the positions on the surface of the moving vehicle frame (1) corresponding to the adjustment grooves (3). The locking screw rods (7) are abutted against the surfaces of the adjustment brackets (4).

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