Crane walking trolley structure

Abstract

The utility model relates to a crane walking trolley structure in the technical field of crane walking, which comprises a frame and a hinge lug seat mounted on the top surface of the frame, two wheel groups are mounted at two ends of the lower part of the frame, and each wheel group comprises a wheel axle fixed on the frame and a wheel body rotationally mounted on the wheel axle. The wheel body of one wheel group is driven by a driving unit to rotate; the frame comprises a top plate and two side plates fixed to the two sides of the lower plate surface of the top plate, a through hole is formed in the middle plate surface of the top plate, trapezoidal plates are symmetrically and vertically fixed to the two sides of the through hole, a connecting and supporting plate is fixed between the top ends of the two trapezoidal plates, and a hinge lug seat is fixed to the upper plate surface of the connecting and supporting plate; shells of the driving units are erected in the through holes, driving shafts at the lower ends of the driving units are coaxially and fixedly provided with driving gears, and wheel bodies of the corresponding wheel sets are coaxially and detachably connected with driven gears meshed with the driving gears; according to the trolley structure, the convenience of motor maintenance and the structural strength of the frame can be ensured while the motor is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane walking technical field especially crane walking trolley structure. BACKGROUND

[0002] It is known that the crane walking trolley is a part of the crane and is mainly used for supporting the walking of the crane, and it is usually a kind of transport device at the bottom of the crane, so that the crane can move between different positions to complete more extensive lifting tasks; wherein the walking trolley of the bridge crane usually moves along the track on the fixed track line, is more widely used, generally contains the frame, the upper part of the frame is hinged to the corresponding leg of the bridge crane through the hinge base, the lower part of the frame is provided with the wheel, and the wheel is driven to rotate by the reduction motor to achieve the purpose of walking.

[0003] The conventional reduction motor is generally installed on the side of the frame and directly drives the rotation of the wheel shaft of the wheel, but since the reduction motor is large in size, the side hanging setting is easy to collide during the walking of the crane, and in severe cases, not only the reduction motor will be damaged, but also the wheel will be deformed; the Chinese utility model patent with the publication number CN208561466U discloses a crane trolley, installs the reduction motor on one end of the upper part of the frame, and then drives the wheel through chain transmission, so as to avoid the collision of the side hanging reduction motor; but the defects of the prior art are that the chain transmission assembly still needs to be arranged on the outside of the frame, and the chain is more vulnerable to collision damage or chain falling, and more importantly, although the reduction motor is arranged at the front end of the upper part of the frame, it still has the risk of external collision. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects in the background art and solve the existing technical problems, the utility model discloses a crane walking trolley structure, which can protect the motor while ensuring the convenience of motor maintenance and the structural strength of the frame.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The crane walking trolley structure comprises a frame, a hinge lug seat arranged on the top surface of the frame, two wheel sets arranged at the two ends of the lower part of the frame, a top plate, two side plates arranged on the two sides of the lower surface of the top plate, a through hole arranged on the middle part of the top plate, two trapezoidal plates arranged on the two sides of the through hole, a connecting plate arranged between the top ends of the two trapezoidal plates, and a housing of a driving unit arranged in the through hole.

[0007] Further, the lower bottom length of the trapezoidal plate is greater than the center distance of the two wheel sets, and a vertical rib plate is arranged on the surface of the trapezoidal plate.

[0008] Further, the middle part of the housing of the driving unit is fixed to the corresponding side plate of the frame, so that the upper end of the driving unit is exposed from the through hole.

[0009] Further, the central part of the driven gear is provided with a gap hole through which the wheel shaft passes, and the surface of the driven gear is connected to the outer surface of the wheel body through a bolt.

[0010] Further, the driving unit comprises a corresponding connected speed reducer and motor.

[0011] Further, the wheel body of each of the two wheel sets is connected to a driven gear, the driving gear is located between the two driven gears and is engaged with the two driven gears, and the speed reducer is provided with a brake.

[0012] Due to the adoption of the technical scheme, the crane walking trolley structure has the following beneficial effects:

[0013] The crane walking trolley structure disclosed by the utility model can disperse and transmit the supporting force through the trapezoidal plate, increase the supporting strength of the frame on the hinge lug seat and the main body of the crane, prevent the deformation of the frame support, increase the installation space of the driving unit, make the driving unit installed in the frame and located between the two wheel sets more concealed while ensuring transmission, prevent the driving unit from being damaged by collision, and make part of the driving unit exposed from the through hole of the top plate of the frame, which is beneficial to heat dissipation and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is the implementation structure schematic view of the utility model;

[0015] Fig. 2 is the transmission structure schematic view of the driving unit and the wheel set;

[0016] In the figure: 1, frame; 101, top plate; 102, side plate; 2, ladder plate; 3, connecting support plate; 4, hinge lug seat; 5, wheel set; 501, wheel shaft; 502, wheel body; 6, driving unit; 601, driving shaft; 602, speed reducer; 603, motor; 7, driving gear; 8, driven gear. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be described below in combination with the drawings of the utility model embodiments. In the description, it should be understood that if the orientations or position relationships indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. are described, the orientations or position relationships are only corresponding to the drawings of the utility model, and are for the convenience of describing the utility model, rather than indicating or implying that the devices or elements indicated must have a specific orientation.

[0018] In combination with the drawings Figs. 1-2 The crane walking trolley structure comprises a frame 1 and a hinge lug seat 4 installed on the top surface of the frame 1, two wheel sets 5 are installed at the lower ends of the frame 1, the hinge lug seat 4 is installed in the middle of the frame, and the two wheel sets 5 are installed at the two ends of the frame, so as to ensure the balance of the frame support, the wheel set 5 comprises a wheel shaft 501 fixed to the frame 1 and a wheel body 502 rotatably installed on the wheel shaft 501, and the wheel body 502 of one wheel set 5 is driven to rotate by the driving unit 6;

[0019] The frame 1 comprises a top plate 101 and two side plates 102 fixed to the lower plate surfaces on both sides of the top plate 101, and end plates are also arranged at the two ends of the frame 1 to form a box beam structure, so as to ensure sufficient structural strength, a through hole is arranged in the middle plate surface of the top plate 101, and ladder plates 2 are symmetrically arranged on both sides of the through hole in a vertical manner, the ladder plates 2 can better disperse the pressure received by the upper part to the bottom part, according to the need, the lower base length of the ladder plate 2 is greater than the center distance of the two wheel sets 5, the plate surface of the ladder plate 2 is fixed with vertical rib plates, so as to ensure the self-supporting strength and prevent the frame 1 from deforming, and the top ends of the two ladder plates 2 are fixed with a connecting support plate 3, the hinge lug seat 4 is fixed to the upper plate surface of the connecting support plate 3, and the connecting support plate 3 and the two ladder plates 2 can also play a protective role;

[0020] The housing of the driving unit 6 is arranged in the through hole, and specifically, the middle housing of the driving unit 6 is fixed to the corresponding side plate 102 of the vehicle frame 1, so that the upper end of the driving unit 6 is exposed outside the through hole, which can facilitate heat dissipation of the driving unit 6 and facilitate maintenance while playing a protection role; the driving shaft 601 at the lower end of the driving unit 6 is coaxially fixed with the driving gear 7, and the wheel body 502 of the corresponding wheel set 5 is coaxially and detachably connected with the driven gear 8 engaged with the driving gear 7, and specifically, the central part of the driven gear 8 is provided with a gap hole through which the wheel shaft 501 passes, and the wheel surface of the driven gear 8 is connected with the outer wheel surface of the wheel body 502 through bolts; generally, the diameter of the driven gear 8 is slightly larger than that of the wheel body 502, but since the wheel body 502 is directly supported on the wheel rail, the driven gear 8 will not interfere with the movement of the wheel body 502.

[0021] According to needs, the driving unit 6 comprises a corresponding connected speed reducer 602 and a motor 603, the wheel body 502 of the two wheel sets 5 is connected with the driven gear 8, the driving gear 7 is located between the two driven gears 8 and engaged with the two driven gears 8, and the speed reducer 602 is provided with a brake, specifically, the output shaft of the speed reducer 602 is a double shaft head, one shaft end of the output shaft is connected with the driving shaft 601, and the other shaft end is provided with the brake; the driving unit 6 controls the two wheel sets 5 at the same time, which can ensure smooth travel and control the two wheel sets 5 to brake in a timely manner when braking.

[0022] The crane walking trolley structure is installed in the vehicle frame 1 and between the two wheel sets 5, which achieves the effect of hidden protection, the upper end of the driving unit 6 is exposed through the through hole and can be shielded and protected by the continuous support plate 3 and the trapezoidal plate 2, and the driving shaft 601 at the lower end of the driving unit 6 drives the wheel set 5 to realize the walking function through gear transmission.

[0023] The part not described in the utility model is the prior art, and for those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, no matter from which point of view, the above embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, and any reference signs in the claims should not be regarded as limiting the content of the involved claims.

Claims

1. A crane travelling trolley structure, comprising a trolley frame (1) and a hinge lug seat (4) mounted on the top surface of the trolley frame (1), two wheel sets (5) are mounted on the lower ends of the trolley frame (1), each wheel set (5) comprises a wheel shaft (501) fixed to the trolley frame (1) and a wheel body (502) rotatably mounted on the wheel shaft (501), wherein the wheel body (502) of one wheel set (5) is driven to rotate by a driving unit (6), characterized in that: The frame (1) comprises a top plate (101) and two side plates (102) fixed on both sides of the lower surface of the top plate (101), the middle surface of the top plate (101) is provided with a through hole, two trapezoidal plates (2) are symmetrically arranged on both sides of the through hole, a connecting plate (3) is fixed between the top ends of the two trapezoidal plates (2), and a hinge lug seat (4) is fixed to the upper surface of the connecting plate (3); the housing of a driving unit (6) is arranged in the through hole, a driving shaft (601) at the lower end of the driving unit (6) is coaxially fixed with a driving gear (7), and the wheel body (502) of a corresponding wheel set (5) is coaxially and detachably connected with a driven gear (8) engaged with the driving gear (7).

2. Crane trolley structure according to claim 1, characterized in that The lower base length of the trapezoidal plate (2) is greater than the center distance of the two wheel sets (5), and the surface of the trapezoidal plate (2) is fixed with a vertical rib plate.

3. The crane trolley structure of claim 1, wherein: The middle housing of the driving unit (6) is fixed to the corresponding side plate (102) of the frame (1), so that the upper end of the driving unit (6) is exposed from the through hole.

4. The crane trolley structure of claim 1, wherein: The central part of the driven gear (8) is provided with a gap hole through which the corresponding wheel shaft (501) passes, and the surface of the driven gear (8) and the outer surface of the wheel body (502) are connected by bolts.

5. The crane trolley structure of claim 1, wherein: The driving unit (6) comprises a corresponding speed reducer (602) and a motor (603).

6. Crane trolley structure according to claim 5, characterized in that The wheel body (502) of each of the two wheel sets (5) is connected with a driven gear (8), the driving gear (7) is located between the two driven gears (8) and is engaged with the two driven gears (8), and the speed reducer (602) is provided with a brake.

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