A crane trolley

Abstract

The utility model discloses a crane trolley relates to crane technical field. Including two side plates, the bottom of two side plates is fixed with a plurality of connecting rods, and the inboard of every side's side plate is connected with the supporting wheel through the movable shaft, and the number of the supporting wheel of one side is at least two. The utility model sets up brake assembly and drive assembly, when parking, the controller controls the shrinkage of double -end hydraulic cylinder, and gear and arc toothed plate carry out anticlockwise and clockwise rotation respectively, and when the clockwise rotation of arc toothed plate generates the push of rotation plate to the resistance pressure shaft extrusion to the plug -in block, and the stop brake wheel moves to the single track lateral surface, until the extrusion of stop brake wheel and single track lateral surface, along with the increase of extruding force, the friction between stop brake wheel and single track increases, realizes the quick, stable parking of trolley, thereby not only can accurate delivery of goods to the unloading place improve the use stability of the device, but also reduce the braking distance of trolley.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a crane trolley. Background Technology

[0002] The electric hoist single-girder crane is a small lifting device with advantages such as compact structure, light weight, small size, strong component versatility, and convenient operation. It consists of a trolley that travels along a single track, a wire rope winding assembly installed at the bottom of the trolley, and a hook assembly, and is mainly used for lifting, moving, loading and unloading heavy objects.

[0003] Chinese utility model patent, authorized announcement number CN222524021U, discloses an electric hoist single-girder crane trolley. The trolley frame includes a horizontal plate, side plates fixed to both sides of the top surface of the horizontal plate, and end plates fixed to the front and rear ends of the bottom surface of the horizontal plate. The winding assembly is fixed to the end plates. This device solves the problem that electric hoist single-girder cranes are difficult to move smoothly and stably along the track.

[0004] The above solution solves the technical problems mentioned in the background technology. However, in practical applications, the above solution still has certain defects. For example, when the trolley brakes on a single track, the support wheel of the trolley may still slip on the track due to the inertia of the heavy object and the trolley. This not only increases the friction between the support wheel and the track, but may also cause wear on the track surface and the support wheel in the long run, reducing the service life of the equipment, but also reduces the stability of the device. Utility Model Content

[0005] The purpose of this utility model is to provide a crane trolley to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a crane trolley, comprising two side plates, with several connecting rods fixed to the bottom of the two side plates, and a support wheel connected to the inner side of each side plate via a movable shaft, with at least two support wheels on one side, and a travel motor fixed to the side of one side plate, the output end of the travel motor being fixed to the end of the movable shaft;

[0007] A brake assembly is installed on the inner side of the side plate, and a drive assembly is installed at the bottom of the brake assembly. The drive assembly drives the brake assembly to stop the crane trolley from moving.

[0008] Preferably, the angle formed by the intersection of the extended lines of the top surfaces of the two support wheels is 150-170 degrees.

[0009] Preferably, the brake assembly includes a movable plate and a fixed plate, the fixed plate is fixed to the side plate, and a brake wheel is connected to the movable plate facing the single track side;

[0010] The movable plate has a block and several shafts fixed on its side. The block and shafts are movably connected to the fixed plate. Several springs are fixed between the movable plate and the fixed plate.

[0011] A through groove is provided on the side plate, and a first connecting shaft is fixed between the side walls of the through groove. A rotating plate is movably connected to the shaft of the first connecting shaft.

[0012] Preferably, the brake wheel is a rubber wheel.

[0013] Preferably, a pressing shaft is fixed to the top of the rotating plate, and the pressing shaft is located on the outside of the insert block.

[0014] Preferably, the drive assembly includes an arc-shaped plate fixed to the side of the rotating plate, the arc-shaped plate being movably connected to the side plate, and the center of the arc of the arc-shaped plate coinciding with the central axis of the first connecting shaft;

[0015] A support plate is fixed between the two side plates, and two vertical plates are fixed at the top of the support plate. A gear is movably connected between the two vertical plates through a second connecting shaft. An arc-shaped toothed plate is formed on one side of the arc-shaped plate, and the arc-shaped toothed plate meshes with the gear.

[0016] A double-headed hydraulic cylinder is fixed to the top of the support plate. Straight tooth plates are fixed to the ends of the telescopic rods on both sides of the double-headed hydraulic cylinder. The straight tooth plates mesh with gears.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The crane trolley is equipped with a braking assembly and a drive assembly. When stopping, the controller controls the retraction of the double-headed hydraulic cylinder, and the gear and arc-shaped toothed plate rotate counterclockwise and clockwise respectively. When the arc-shaped toothed plate rotates clockwise, it pushes the rotating plate, thereby causing the pressure shaft to squeeze the insert block. The brake wheel moves towards the side of the single track until it squeezes against the side of the single track. As the squeezing force increases, the friction between the brake wheel and the single track increases, achieving a fast and stable stop for the trolley. This not only improves the stability of the device by accurately transporting goods to the unloading location, but also reduces the braking distance of the trolley, reduces wear on the track surface and support wheels, and extends the service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a diagram showing the working state of the trolley of this utility model;

[0020] Figure 2 This is a front view of the trolley in its working state.

[0021] Figure 3 This is an axial view of the trolley of this utility model;

[0022] Figure 4 This is a detailed drawing of the drive component of this utility model.

[0023] In the diagram: 1. Side plate; 101. Connecting rod; 2. Lifting device; 3. Support wheel; 4. Travel motor; 5. Brake assembly; 501. Movable plate; 502. Brake stop wheel; 503. Fixed plate; 504. Insert block; 505. Spring; 506. Rotating plate; 507. Pressing shaft; 6. Drive assembly; 601. Arc plate; 602. Arc toothed plate; 603. Support plate; 604. Gear; 605. Straight toothed plate; 606. Double-headed hydraulic cylinder; 7. Single track. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The crane in this device is an electric hoist single-girder crane, which includes a trolley that travels along a single track, a wire rope winding assembly installed at the bottom of the trolley, and a hook assembly. The winding assembly and the hook assembly constitute the lifting device 2.

[0026] like Figures 1-4 As shown, this utility model provides a technical solution: a crane trolley, including two side plates 1 and a controller. Two connecting rods 101 are fixed to the bottom of the two side plates 1. Support wheels 3 are connected to the inner side of each side plate 1 via a movable shaft. There are at least two support wheels 3 on one side, and the support wheels 3 on both sides are symmetrically arranged. A travel motor 4 is fixed to the side of one side plate 1, and the output end of the travel motor 4 is fixed to the end of the movable shaft. The support wheels 3 are also fixed to the end of the movable shaft. In this solution, to prevent the support wheels 3 from lateral displacement on the single track 7 and to improve the stability of the trolley, such as... Figure 2 As shown, the angle A formed by the intersection of the extended lines of the top surfaces of the two support wheels 3 is 150-170 degrees, with a preferred angle of 165 degrees. It is understood that, in order to be compatible with the support wheels 3, the angle formed by the extended lines of the top surfaces of the support plates on both sides of the bottom of the single track 7 is also 165 degrees. In use, the support wheels 3 are placed on the track of the single track 7. After starting the travel motor 4, the travel motor 4 drives the movable shaft to rotate. When the movable shaft rotates, it drives the support wheels 3 to rotate, thereby enabling the trolley to move along the single track 7.

[0027] like Figure 2 and Figure 3As shown, a brake assembly 5 is provided on the inner side of the side plate 1, and a drive assembly 6 is provided at the bottom of the brake assembly 5. The drive assembly 6 drives the brake assembly 5, thereby stopping the crane trolley from moving.

[0028] like Figure 3 As shown, the brake assembly 5 includes a movable plate 501 and a fixed plate 503. The fixed plate 503 is fixed to the side plate 1. A brake wheel 502 is connected to the side of the movable plate 501 facing the single track 7. The brake wheel 502 can be movably connected to the movable plate 501 or fixedly connected. To reduce the wear of the brake wheel 502, the preferred connection between the brake wheel 502 and the movable plate 501 is a movable connection. To reduce the wear of the single track 7, the brake wheel 502 is a rubber wheel.

[0029] A plug block 504 and several plug shafts are fixed on the side of the movable plate 501. In this scheme, the number of plug shafts is set to two, which are symmetrically distributed relative to the movable plate 501. The plug block 504 and the plug shafts are movably plugged into the fixed plate 503. Two springs 505 are fixed between the movable plate 501 and the fixed plate 503, and the plug shafts are located in the spiral ring of the springs 505. A through groove is opened on the plate body of the side plate 1. A first connecting shaft is fixed between the side walls of the through groove. A rotating plate 506 is movably connected to the shaft of the first connecting shaft. A pressing shaft 507 is fixed on the top of the rotating plate 506, and the pressing shaft 507 is located outside the plug block 504.

[0030] like Figure 4 As shown, the drive assembly 6 includes an arc-shaped plate 601 fixed to the side of the rotating plate 506 and movably inserted into the side plate 1. To enable the rotating plate 506 to rotate around the first connecting shaft, the center of the arc of the arc-shaped plate 601 coincides with the central axis of the first connecting shaft. A support plate 603 is fixed between the two side plates 1, and two vertical plates are fixed to the top of the support plate 603. A gear 604 is movably connected between the two vertical plates through a second connecting shaft, and the gear 604 can rotate around the second connecting shaft. An arc-shaped toothed plate 602 is formed on the side, and the arc-shaped toothed plate 602 meshes with the gear 604. A double-headed hydraulic cylinder 606 is fixed at the top of the support plate 603. Straight toothed plates 605 are fixed at the ends of the telescopic rods on both sides of the double-headed hydraulic cylinder 606, and the straight toothed plates 605 mesh with the gear 604. Since the straight toothed plates 605 and the gear 604 mesh with each other, as well as the arc-shaped toothed plate 602 and the gear 604 mesh, the arc-shaped toothed plate 602 can be driven to rotate when the double-headed hydraulic cylinder 606 extends or retracts.

[0031] As a supplement to this solution, when parking, the controller controls the double-headed hydraulic cylinder 606 to retract. At this time, the gear 604 and the arc-shaped toothed plate 602 rotate counterclockwise and clockwise respectively. When the arc-shaped toothed plate 602 rotates clockwise, it pushes the rotating plate 506, thereby causing the pressure shaft 507 to squeeze the insert block 504. At this time, the spring 505 extends, and the brake wheel 502 moves towards the side of the single track 7 until the brake wheel 502 squeezes against the side of the single track 7. As the squeezing force increases, the friction between the brake wheel 502 and the single track 7 increases, thereby achieving rapid parking of the trolley.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A crane trolley, comprising two side plates (1), characterized in that: Several connecting rods (101) are fixed to the bottom of the two side plates (1). Each side plate (1) has a support wheel (3) connected to its inner side via a movable shaft. There are at least two support wheels (3) on one side. A walking motor (4) is fixed to the side of one side plate (1). The output end of the walking motor (4) is fixed to the end of the movable shaft. A brake assembly (5) is provided on the inner side of the side plate (1), and a drive assembly (6) is provided at the bottom of the brake assembly (5). The drive assembly (6) drives the brake assembly (5) to stop the crane trolley from moving.

2. A crane trolley according to claim 1, characterized in that: The angle formed by the intersection of the extended lines of the top surfaces of the support wheels (3) on both sides is 150-170 degrees.

3. A crane trolley according to claim 1, characterized in that: The brake assembly (5) includes a movable plate (501) and a fixed plate (503). The fixed plate (503) is fixed to the side plate (1). The movable plate (501) is connected to a brake wheel (502) on the side facing the single track (7). The movable plate (501) has a plug (504) and several plug shafts fixed on its side. The plug (504) and plug shafts are movably connected to the fixed plate (503). Several springs (505) are fixed between the movable plate (501) and the fixed plate (503). A through groove is provided on the plate body of the side plate (1), and a first connecting shaft is fixed between the side walls of the through groove. A rotating plate (506) is movably connected to the shaft body of the first connecting shaft.

4. A crane trolley according to claim 3, characterized in that: The brake wheel (502) is a rubber wheel.

5. A crane trolley according to claim 3, characterized in that: The top of the rotating plate (506) is fixed with a pressing shaft (507), and the pressing shaft (507) is located outside the insert block (504).

6. A crane trolley according to claim 3, characterized in that: The drive assembly (6) includes an arc plate (601) fixed to the side of the rotating plate (506), the arc plate (601) is movably inserted into the side plate (1), and the arc center of the arc plate (601) coincides with the central axis of the first connecting shaft. A support plate (603) is fixed between the two side plates (1). Two vertical plates are fixed at the top of the support plate (603). A gear (604) is movably connected between the two vertical plates through a second connecting shaft. An arc-shaped toothed plate (602) is formed on one side of the arc plate (601). The arc-shaped toothed plate (602) meshes with the gear (604). A double-headed hydraulic cylinder (606) is fixed at the top of the support plate (603). Straight tooth plates (605) are fixed at the ends of the telescopic rods on both sides of the double-headed hydraulic cylinder (606). The straight tooth plates (605) mesh with the gears (604).

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