A crane towing trolley

Abstract

The present invention discloses a crane towing trolley, which includes a wheel frame, in the middle of which a first friction wheel is rotatably provided; a speed reducer fixed on one side of the wheel frame, the output end of which is coaxially connected to the first friction wheel; a motor fixed on one side of the speed reducer, the output end of which is coaxially connected to the input end of the speed reducer; two sets of compression spring wheel groups symmetrically arranged on the connecting frames on both sides of the wheel frame, and both sides of the connecting frames are connected to the two compression spring wheel groups; a second friction wheel rotatably connected to the connecting frame, a friction groove radially recessed inward is provided on the outer wall of the second friction wheel, and the friction groove abuts against the outer wall of the first friction wheel; and a plurality of guide wheels arranged on the connecting frame. The structure of the crane towing trolley in the present invention is compact, can run smoothly on the track, greatly reduces the self-weight of the equipment compared with the traditional towing trolley, and realizes the technical purposes of miniaturization and easy installation and maintenance of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and specifically refers to a crane towing trolley. Background Art

[0002] Definition and working characteristics of lifting machinery: Lifting machinery is equipment that uses an intermittent and repetitive working method to lift, lower, or lift and transport materials through a load-taking device. In the field, the lifting capacity is large, and the distance between the equipment lifting points is much greater than the distance between the main and auxiliary hook lifting points. In the case where normal lifting cannot be satisfied, it is necessary to adjust the position of the auxiliary hook lifting point for lifting operations.

[0003] However, most of the lifting trolleys with adjustable auxiliary hook lifting point positions of bridge cranes have certain defects. When the lifting trolley moves driven by the towing trolley, there is no limit device, and it is easy to shake during the movement. Moreover, the structure of the lifting trolley is heavy, and it is inconvenient to disassemble and repair. Summary of the Invention

[0004] To solve the above technical problems, the technical solution provided by the present invention is a crane towing trolley:

[0005] A crane towing trolley, comprising

[0006] A wheel frame, in the middle of which a first friction wheel is rotatably provided;

[0007] A speed reducer, which is fixed on one side of the wheel frame, and its output end is coaxially connected to the first friction wheel;

[0008] An electric motor, which is fixed on one side of the speed reducer, and its output end is coaxially connected to the input end of the speed reducer;

[0009] A compression spring wheel set, there are two groups of which are symmetrically arranged on both sides of the wheel frame

[0010] A connecting frame, both sides of which are connected to the two compression spring wheel sets;

[0011] A second friction wheel, which is rotatably connected to the connecting frame. A friction groove that radially depresses inward is provided on the outer wall of the second friction wheel, and the friction groove abuts against the outer wall of the first friction wheel, so that the second friction wheel can be driven by the first friction wheel to rotate;

[0012] Guide wheels, there are several of which are arranged on the connecting frame.

[0013] As an improvement, the compression spring wheel set includes a load-bearing wheel, a support frame, a fixed shaft, left and right wall plates, and a compression spring; both ends of the fixed shaft are connected to the wheel frame by bolts; a chute is provided on the support frame, and the fixed shaft passes through the chute and can slide up and down along the chute; the left and right wall plates are arranged at the lower end of the support frame; the compression spring is arranged at the lower end of the left and right wall plates.

[0014] As an improvement, two load-bearing wheels are provided in each spring-loaded wheel set, and the two load-bearing wheels are symmetrically arranged on both sides of the support frame.

[0015] As an improvement, the number of the second friction wheels is two.

[0016] As an improvement, the number of the guide wheels is four and they are arranged in two groups. The two groups of guide wheels are respectively arranged at both ends of the connecting frame and between the second friction wheel and the spring-loaded wheel set.

[0017] As an improvement, the axis of the guide wheel is arranged in the vertical direction.

[0018] The advantages of the present invention compared with the prior art are as follows: The structure of the crane towing trolley in the present invention is compact and can run smoothly on the track. Compared with the traditional towing trolley, the self-weight of the equipment is greatly reduced, and the technical purposes of miniaturization of the equipment and easy installation and maintenance are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of a crane towing trolley of the present invention Figure 1 .

[0020] Figure 2 is a schematic structural view of a crane towing trolley of the present invention Figure 2 .

[0021] Figure 3 is a top view of a crane towing trolley of the present invention.

[0022] As shown in the figure: 1, wheel frame; 2, first friction wheel; 3, speed reducer; 4, motor; 5, spring-loaded wheel set; 6, connecting frame; 7, second friction wheel; 8, friction groove; 9, guide wheel; 10, load-bearing wheel; 11, support frame; 12, fixed shaft; 13, left and right wall plates; 14, compression spring DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals designate like or similar elements or elements having like or similar functions throughout. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", "radial", "axial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of the present invention, the "first feature", "second feature" may include one or more of such features. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0027] The following further details a crane towing cart of the present invention with reference to the accompanying drawings.

[0028] With reference to the accompanying drawings, Figures 1 to 3 , a crane towing cart includes

[0029] a wheel carrier 1, and a first friction wheel 2 is rotatably provided in the middle of the wheel carrier 1;

[0030] a speed reducer 3, the speed reducer 3 is fixed on one side of the wheel carrier 1, and its output end is coaxially connected to the first friction wheel 2;

[0031] a motor 4, the motor 4 is fixed on one side of the speed reducer 3, and its output end is coaxially connected to the input end of the speed reducer 3;

[0032] a compression spring wheel set 5, there are two sets of compression spring wheel sets 5 and they are symmetrically arranged on both sides of the wheel carrier 1

[0033] a connecting frame 6, both sides of the connecting frame 6 are connected to the two compression spring wheel sets 5;

[0034] The second friction wheel 7 is rotatably connected to the connecting frame 6. A friction groove 8 that is radially recessed inward is provided on the outer wall of the second friction wheel 7. The friction groove 8 abuts against the outer wall of the first friction wheel 2, enabling the second friction wheel 7 to rotate driven by the first friction wheel 2.

[0035] The guide wheels 9 are provided on the connecting frame 6 and there are several of them.

[0036] In this embodiment, as Figures 1 to 3 shown, the compression spring wheel set 5 includes a load-bearing wheel 10, a support frame 11, a fixed shaft 12, left and right wall plates 13 and a compression spring 14; both ends of the fixed shaft 12 are connected to the wheel frame 1 by bolts; a chute is provided on the support frame 11, and the fixed shaft 12 passes through the chute and can slide up and down along the chute; the left and right wall plates 13 are provided at the lower end of the support frame 11; the compression spring 14 is provided at the lower end of the left and right wall plates 13.

[0037] In this embodiment, as Figures 1 to 3 shown, two load-bearing wheels 10 are provided in each compression spring wheel set 5, and the two load-bearing wheels 10 are symmetrically arranged on both sides of the support frame 11.

[0038] In this embodiment, as Figures 1 to 3 shown, the number of the second friction wheels 7 is two.

[0039] In this embodiment, as Figures 1 to 3 shown, the number of the guide wheels 9 is four and they are arranged in two groups. The two groups of guide wheels 9 are respectively provided at both ends of the connecting frame 6 and are located between the second friction wheel 7 and the compression spring wheel set 5.

[0040] In this embodiment, as Figures 1 to 3 shown, the axes of the guide wheels 9 are arranged in the vertical direction.

[0041] In the specific implementation of the present invention, the motor 4 drives the first friction wheel 2 to rotate through the speed reducer 3. When the first friction wheel 2 rotates, it drives the second friction wheel 7 to rotate through the friction groove 8, thereby enabling the towing cart to move forward or backward along the track; among them, the guide wheels 9 provided at both ends of the connecting frame 6 prevent the towing cart from deviating when running along the track, playing a role of limiting and preventing deviation; the compression spring wheel set is the main load-bearing wheel set, and a heavy object can be suspended at the lower end of the compression spring 14.

[0042] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design a structural manner and an embodiment similar to the technical solution without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A crane towing trolley, characterized in that: It includes a wheel carrier (1), and a first friction wheel (2) is rotatably provided in the middle of the wheel carrier (1); a speed reducer (3), the speed reducer (3) is fixed on one side of the wheel carrier (1), and its output end is coaxially connected to the first friction wheel (2); a motor (4), the motor (4) is fixed on one side of the speed reducer (3), and its output end is coaxially connected to the input end of the speed reducer (3); a compression spring wheel set (5), there are two sets of the compression spring wheel set (5) and they are symmetrically arranged on the connecting frames (6) on both sides of the wheel carrier (1), and both sides of the connecting frame (6) are connected to the two compression spring wheel sets (5); a second friction wheel (7), the second friction wheel (7) is rotatably connected to the connecting frame (6), a friction groove (8) radially recessed inward is provided on the outer wall of the second friction wheel (7), and the friction groove (8) abuts against the outer wall of the first friction wheel (2), so that the second friction wheel (7) can be driven by the first friction wheel (2) to rotate; guide wheels (9), there are several guide wheels (9) and they are arranged on the connecting frame (6); the compression spring wheel set (5) includes a load-bearing wheel (10), a support frame (11), a fixed shaft (12), left and right wallboards (13) and a compression spring (14); both ends of the fixed shaft (12) are connected to the wheel carrier (1) by bolts; a chute is provided on the support frame (11), and the fixed shaft (12) passes through the chute and can slide up and down along the chute; the left and right wallboards (13) are arranged at the lower end of the support frame (11); the compression spring (14) is arranged at the lower end of the left and right wallboards (13).

2. The trolley for a crane according to claim 1, characterized in that: Two load-bearing wheels (10) are provided in each compression spring wheel set (5), and the two load-bearing wheels (10) are symmetrically arranged on both sides of the support frame (11).

3. A crane towing trolley according to claim 1, characterized in that: The number of the second friction wheels (7) is two.

4. A crane towing trolley according to claim 3, characterized in that: The number of the guide wheels (9) is four and they are arranged in two groups. The two groups of guide wheels (9) are respectively arranged at both ends of the connecting frame (6) and are located between the second friction wheel (7) and the compression spring wheel set (5).

5. A crane towing trolley according to claim 4, characterized in that: The axes of the guide wheels (9) are arranged in the vertical direction.

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