Crane pulley

Abstract

The invention relates to the technical field of pulley load hoisting, in particular to a crane pulley. Comprising a U-shaped tackle support, two universal shafts a facing downwards are installed on the lower end face of a top plate of the tackle support, a roller support is arranged below each universal shaft a, and a roller a is arranged in each roller support; a universal shaft b facing upwards is arranged on a bottom plate of the tackle support, an L-shaped driving motor support is fixed to the universal shaft b, a driving motor is fixed to the outer side of the driving motor support, an output shaft of the driving motor penetrates through the driving motor support to be connected with a roller b on the inner side, the roller b is a toothed roller, and the driving motor is fixed to the bottom plate of the tackle support. A lifting motor is fixed below a bottom plate of the pulley bracket; due to the three-roller design of the inverted isosceles triangle, the machine runs more stably; the upper clamping pulley and the lower meshing pulley are matched with the track, so that the driving precision is ensured, the running stability can be further ensured, and meanwhile, the device can adapt to a linear or bent track.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting of trolley loads, and particularly to a crane trolley. Background Art

[0002] In an electrical plant area, hoisting equipment is often used for handling operations, such as handling equipment with a large weight, such as a circuit breaker. Most of the existing movable tracks of crane trolleys are I-shaped tracks or C-shaped tracks, and the tracks are restricted by steel materials; and the existing trolleys can only travel in a straight line and it is difficult to change the running track, while the hoisting equipment that can achieve a change in straight-line travel is expensive and difficult to purchase in batches. Summary of the Invention

[0003] In order to make up for the deficiencies in the prior art and achieve the above functions, the present invention provides a crane trolley.

[0004] The present invention is achieved by the following technical solutions: A crane trolley includes a trolley bracket. Two downward universal shafts a are installed on the lower end surface of the top plate of the trolley bracket. A roller bracket is provided below each universal shaft a, and a roller a is provided in the roller bracket; A upward universal shaft b is provided on the bottom plate of the trolley bracket. A drive motor bracket is fixed on the universal shaft b. A drive motor is fixed outside the drive motor bracket. The output shaft of the drive motor passes through the drive motor bracket and is connected to the inner roller b. The roller b is a toothed roller. A lifting motor is fixed under the bottom plate of the trolley bracket.

[0005] Further, in order to better implement the present invention, the trolley bracket is in a "C" shape with the opening facing forward.

[0006] Further, in order to better implement the present invention, the drive motor bracket is in an "L" shape.

[0007] Further, in order to better implement the present invention, the front and rear centers of the roller a and the roller b are in the same vertical plane, and the centers of the three are in an inverted isosceles triangle.

[0008] Further, in order to better implement the present invention, both the roller a and the roller b are in an "H" shape and the inner walls are chamfered outward.

[0009] Further, in order to better implement the present invention, a lifting wheel is fixed on the output shaft of the lifting motor.

[0010] Further, in order to better implement the present invention, the locking ports provided on the universal shaft a and the universal shaft b can be inserted and clamped by fixing pins, A pulley track suitable for a crane pulley comprises a square tube guide rail, wherein the bottom surface of the guide rail is provided with guide rail teeth capable of meshing with a roller b, and the front and rear end surfaces of the guide rail are provided with penetrating guide rail fixing holes.

[0011] The beneficial effects of the present invention are: (1) The three rollers in the inverted isosceles triangle design can mesh and clamp the corresponding guide rails, making the machine run more stably; (2) The upper clamping and lower meshing pulley and track matching form can ensure the driving accuracy while further ensuring the smooth operation, and can be adapted to straight or curved tracks. (3) The installed lifting motor is responsible for completing the lifting task of the items, realizing the dual functions of driving and lifting. (4) The design of this device is simple and exquisite, which greatly reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram illustrating the positional relationship of the three rollers; Figure 3 A three-dimensional schematic diagram of another viewing angle of the present invention; Figure 4 It is a side schematic diagram of the clock roller a of the present invention.

[0013] In the figure: 1. Pulley bracket, 2. Universal shaft a, 201. Universal shaft b, 3. Fixing pin, 4. Roller bracket, 5. Roller a, 6. Guide rail, 7. Guide rail fixing hole, 8. Guide rail tooth, 9. Drive motor, 10. Roller b, 11. Drive motor bracket, 12. Lifting motor, 13. Lifting wheel, 14. Lifting motor fixing hole. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0016] like Figures 1 to 4As shown in the figure, the present invention includes a "C"-shaped pulley support 1. At the lower end surface of the top plate of the pulley support 1, two downward-facing universal shafts a2 are installed. Below each universal shaft a2, a roller support 4 is provided, and a roller a5 is arranged in the roller support 4; On the bottom plate of the pulley support 1, an upward-facing universal shaft b201 is provided. A "L"-shaped drive motor support 11 is fixed on the universal shaft b201. A drive motor 9 is fixed on the outer side of the drive motor support 11. The output shaft of the drive motor 9 passes through the drive motor support 11 and is connected to the inner roller b10. The roller b10 is a toothed roller. A lifting motor 12 is fixed under the bottom plate of the pulley support 1.

[0017] The front and rear centers of the roller a5 and the roller b10 are in the same vertical plane, and the centers of the three form an inverted isosceles triangle, which is beneficial to maintaining the stability of the whole machine during traveling.

[0018] Both the roller a5 and the roller b10 are in the shape of "H", and the inner walls are chamfered outward, so as to be limited on both sides of the corresponding track, and the way of cooperating on the track is clearance fit to avoid the problem of inability to turn due to jamming; this special design enables the roller to have better adaptability and steering ability when traveling on the guide rail. When the roller travels along a curved guide rail, the chamfered design can reduce the contact stress between the roller wall and the guide rail, making the roller turn more smoothly along the curved track of the guide rail. The chamfered design enables the roller to have a smoother transition when turning, avoiding the impact and wear caused by direct turning. At the same time, the chamfered structure can also play a guiding role, helping the roller to travel more accurately along the curved track of the guide rail, improving the traveling accuracy and stability.

[0019] A lifting wheel 13 is fixed on the output shaft of the lifting motor 12. Through ropes, hooks, etc. fixed on the lifting wheel 13, corresponding items can be lifted.

[0020] The pulley track cooperating with the crane pulley includes a square tube-shaped guide rail 6. The manufacturing cost of the square tube is low. Guide rail teeth 8 that can be engaged with the roller b10 are provided on the bottom surface of the guide rail 6. Through guide rail fixing holes 7 are provided on the front and rear end surfaces of the guide rail 6.

[0021] The locking ports on the universal shaft a2 and the universal shaft b201 can be inserted and clamped by a fixing pin 3. The locking ports are recessed on both sides. The fixing pin 3 is in the shape of "U" and is clamped in the recess to limit the direction so that it can only run forward (or backward).

[0022] The working principle of the present invention is as follows: (1) The crane pulley is installed on the pulley track, the two upper rollers a5 are clamped on the top of the guide rail 6, and the lower roller b10 is clamped on the bottom of the guide rail 6 and the two are meshed with each other. Because of the meshing cooperation mode, the stable driving trajectory of the machine when turning can be guaranteed. (2) The drive motor 9 is started, driving the roller b10 to rotate, so that the whole machine moves forward or backward along the guide rail 6. (3) When running to the guide rail 6 at the turning point, due to the action of the three universal shafts, the frontmost roller a5 will rotate accordingly, causing the two following the pulley track to rotate accordingly. (4) When it is necessary to lift the object, the lifting motor 12 is started, and the object is lifted and moved to the required position through the transmission mechanism (such as chain, wire rope, etc.).

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A crane pulley, characterized in that: It includes a pulley support (1). At the lower end surface of the top plate of the pulley support (1), two downward-facing universal shafts a (2) are installed. Below each universal shaft a (2), a roller support (4) is provided, and a roller a (5) is arranged in the roller support (4). On the bottom plate of the pulley support (1), an upward-facing universal shaft b (201) is provided. A drive motor support (11) is fixed on the universal shaft b (201). A drive motor (9) is fixed on the outer side of the drive motor support (11). The output shaft of the drive motor (9) passes through the drive motor support (11) and is connected to the inner roller b (10). The roller b (10) is a toothed roller. A lifting motor (12) is fixed under the bottom plate of the pulley support (1).

2. The crane block according to claim 1, characterized in that: The pulley support (1) is in a "C" shape with the opening facing forward.

3. The crane block according to claim 1, characterized in that: The drive motor support (11) is in an "L" shape structure.

4. The crane block according to claim 1, characterized in that: The front and rear centers of the roller a (5) and the roller b (10) are in the same vertical plane, and the centers of the three form an inverted isosceles triangle.

5. The crane block according to claim 1, characterized in that: Both the roller a (5) and the roller b (10) are in an "H" shape structure and the inner walls are chamfered outward.

6. The crane block according to claim 1, characterized in that: A lifting wheel (13) is fixed on the output shaft of the lifting motor (12).

7. The crane block according to claim 1, characterized in that: The lock openings provided on the universal shaft a (2) and the universal shaft b (201) can be inserted and clamped by a fixing pin (3).

8. A pulley track suitable for the crane pulley according to claim 1, characterized in that: It includes a square tube-shaped guide rail (6). On the bottom surface of the guide rail (6), guide rail teeth (8) capable of meshing with the roller b (10) are provided. Through guide rail fixing holes (7) are provided on the front and rear end surfaces of the guide rail (6).

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