High-low rail switching lift truck

Abstract

The utility model discloses a high-low rail changing lift truck which comprises a frame, a lifting assembly arranged at the upper end of the frame, an objective table arranged at the upper end of the lifting assembly, at least eight rail changing assemblies arranged at the lower end of the frame and divided into two rows, sliding rails arranged on the inner wall of the frame along the long edges of the frame respectively, and a reinforcing frame fixed on the inner wall of the frame. Mounting columns in one-to-one correspondence with the rail changing assemblies are fixed to the lower end of the frame, fixing beams are fixed between the two rail changing assemblies which are opposite front and back, a rail changing piece is formed, each rail changing assembly comprises a U-shaped fixing leg rotationally connected with the corresponding mounting column, and single-side wheels are rotationally connected to the lower ends of the fixing legs correspondingly; a transmission rod is fixedly connected between the two front-back opposite single-side wheels, the rail changing hydraulic rods stretch out and draw back to drive the fixing beams and the fixing legs to rotate, then the single-side wheels are lifted up, and the effect of high-low rail changing of the device is achieved through one-to-one corresponding cooperation of the rail changing hydraulic rods and the rail changing pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of high and low track changing, in particular to a high and low track changing lifting vehicle. Background Art

[0002] Electric flat cars are widely used in industries such as machinery manufacturing, metallurgy, boilers, etc. as a means of transportation for materials transported inside and outside the factories of these industries in conjunction with cranes, so as to reduce the labor intensity of employees and improve work efficiency.

[0003] However, with the continuous expansion of the use of electric flat cars, some problems have been encountered in the use of existing electric flat cars. When changing tracks and moving, the existing electric flat cars can only change tracks on the same horizontal plane. When changing from a low track to a high track, it is necessary to add a liftable track-changing trolley to lift the electric flat car to achieve the switching of high and low tracks. This increases the cost of equipment investment. At the same time, when multiple electric flat cars change tracks at the same time, it is necessary to wait for other electric flat cars to change tracks before changing tracks, which affects work efficiency. Utility Model Content

[0004] In view of the above problems, the utility model provides a high-low track changing lifting vehicle; the utility model has the advantages of realizing high-low track changing and independent track changing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-low track track changing lifting vehicle, comprising a frame, a lifting assembly is provided at the upper end of the frame, a loading platform is provided at the upper end of the lifting assembly, at least eight track changing assemblies are provided at the lower end of the frame and are divided into two rows, the inner wall of the frame is provided with slide rails along its long sides, a reinforcing frame is fixed to the inner wall of the frame, and mounting columns corresponding to the track changing assemblies are fixed to the lower end of the frame;

[0006] A fixed beam is fixed between the two front and rear opposite track changing assemblies to form a track changing part. The track changing assembly includes a U-shaped fixed leg rotatably connected to the mounting column, and the lower ends of the fixed legs are rotatably connected to single-sided wheels. A transmission rod is fixedly connected between the two front and rear opposite single-sided wheels, and the transmission rod is transmission-connected to the output end of the reduction gear box, and the input end of the reduction gear box is connected to a motor. The reduction gear box is fixed on the fixed leg, and the motor is fixed on the reduction gear box. The left end of the fixed beam is rotatably connected to one end of a track changing hydraulic rod, and the other end of the track changing hydraulic rod is rotatably connected to the reinforcement frame.

[0007] Preferably, the lifting assembly includes an inner plate and an outer plate, the inner plate and the outer plate are cross-intersected to form a scissor lifting frame and are provided with two groups, connecting rods are rotatably connected between the lower ends of the two outer plates and between the lower ends of the two inner plates, and sliding rods are rotatably connected between the upper ends of the two outer plates and between the upper ends of the two inner plates, the lifting assembly also includes two groups of fixed plates symmetrically arranged and fixed to the lower end of the loading platform, through holes are respectively opened at both ends of the fixed plates, the upper ends of the inner plate and the outer plate are located between each group of two fixed plates, and the sliding rod is slidably connected in the through hole.

[0008] Preferably, the two connecting rods are respectively rotatably connected to telescopic ends of a lifting hydraulic rod, and the lifting hydraulic rod is fixed on the reinforcement frame.

[0009] Preferably, the reinforcement frame is formed by a transverse beam and a plurality of longitudinal beams, and a groove for the lifting assembly to pass through is formed at the upper end of the reinforcement frame.

[0010] Preferably, there are at least four track-changing components, which are, from right to left, a first track-changing component, a second track-changing component, a third track-changing component and a fourth track-changing component.

[0011] Preferably, the front end and the rear end of the connecting rod are rotatably connected to pulleys respectively, and the pulleys are located in the slide rails of the frame and slide.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The track-changing hydraulic rod is extended and retracted to drive the fixed beam and the fixed leg to rotate, thereby lifting the single-sided wheel. The high and low track-changing effect of the device is achieved through the one-to-one correspondence between the track-changing hydraulic rod and the track-changing parts, reducing the cost investment. At the same time, multiple devices can change tracks at the same time, maximizing work efficiency.

[0014] 2. By setting up at least four sets of track-changing parts, it is possible to prevent uneven force on the frame when the track-changing hydraulic rod drives the track-changing parts to rotate, causing one end of the device to tilt up. At the same time, the device can be moved by single-sided wheels and high and low rails to effectively prevent derailment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is an overall schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the framework of the utility model;

[0018] Figure 4 It is an overall schematic diagram of the track changing assembly of the utility model;

[0019] Figure 5 It is an overall schematic diagram of the lifting assembly of the utility model;

[0020] Figure 6 It is a schematic diagram of the lifting component of the utility model.

[0021] Explanations in the figure: 1. Frame; 2. Lifting assembly; 3. Track changing assembly; 4. Loading platform; 101. Reinforcement frame; 102. Slide rail; 103. Mounting column; 201. Inner plate; 202. Outer plate; 203. Connecting rod; 204. Lifting hydraulic rod; 205. Fixed plate; 206. Slide rod; 301. Fixed leg; 302. Single-sided wheel; 303. Fixed beam; 304. Track changing hydraulic rod; 305. Transmission rod; 306. Reducer; 307. Motor; 2051. Through hole. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] See also Figure 1 and Figure 2 A high-low track track changing lift vehicle comprises a frame 1, a lifting assembly 2 is provided at the upper end of the frame 1, a loading platform 4 is provided at the upper end of the lifting assembly 2, the frame 1 is used to connect the various components, and at the same time to bear the material, so that the gravity of the material is dispersed, the loading platform 4 is used to carry the material, the material is placed on the loading platform 4, and then the material is transported through the device, the lifting assembly 2 is used to lift the loading platform 4, and it is convenient to lift the material on the loading platform 4 to a specified height, at least eight track changing assemblies 3 are provided at the lower end of the frame 1 and are divided into two rows, and the inner wall of the frame 1 is respectively provided with slide rails 102 along its long sides, A reinforcing frame 101 is fixed to the inner wall of the frame 1, and the reinforcing frame 101 is fixed to the inner wall of the frame 1 to increase the overall rigidity of the frame 1 and prevent the frame 1 from deformation. A mounting column 103 corresponding to the track changing assembly 3 is fixed to the lower end of the frame 1. The reinforcing frame 101 is formed by a crossbeam and multiple longitudinal beams. A groove for the lifting assembly 2 to pass through is opened at the upper end of the reinforcing frame 101. The track changing assembly 3 is used for the device to move to ensure the transportation of materials. At the same time, the track changing assembly 3 is rotated and adjusted to achieve the effect of switching between high rail and low rail, reduce the factory cost investment, and realize that multiple devices can perform track changing operations at the same time.

[0024] See also Figure 3 and Figure 4, a fixed beam 303 is fixed between the two front and rear opposite track-changing assemblies 3 and forms a track-changing part, and the track-changing parts are at least four and are respectively the first track-changing part, the second track-changing part, the third track-changing part and the fourth track-changing part from right to left. By setting at least four groups of track-changing parts, it is prevented that the frame 1 is unevenly stressed when the track-changing hydraulic rod 304 drives the track-changing part to rotate, causing one end of the device to tilt. The track-changing assembly 3 includes a U-shaped fixed leg 301 rotatably connected to the mounting column 103, and the lower end of the fixed leg 301 is rotatably connected to a single-sided wheel 302, and a transmission rod 305 is fixedly connected between the two front and rear opposite single-sided wheels 302. The single-sided wheel 302 is used to move with the high rail and the low rail, so as to effectively prevent the device from derailing. The transmission rod 305 is transmission-connected to the output end of the reduction box 306, and the input end of the reduction box 306 is transmission-connected. A motor 307 is connected, and the reduction box 306 is fixed on the fixed leg 301. The motor 307 is fixed on the reduction box 306. The motor 307 drives the transmission rod 305 to rotate through the reduction box 306. At the same time, since the transmission rod 305 is fixedly connected to the transmission rod 305, the single-sided wheel 302 is driven to rotate, so that the device can walk. The left end of the fixed beam 303 is rotatably connected to one end of the track-changing hydraulic rod 304, and the other end of the track-changing hydraulic rod 304 is rotatably connected to the reinforcement frame 101. The track-changing hydraulic rod 304 is extended and retracted to drive the fixed beam 303 and the fixed leg 301 to rotate, so that the single-sided wheel 302 is lifted. The track-changing hydraulic rod 304 corresponds to the track-changing member one by one to achieve the high and low track-changing effect of the device, reduce the cost investment, and at the same time achieve multiple devices that can change tracks at the same time, so that the work efficiency is maximized.

[0025] See also Figure 5 and Figure 6The lifting assembly 2 includes an inner plate 201 and an outer plate 202, the inner plate 201 and the outer plate 202 are cross-connected to form a scissor lifting frame and are provided with two groups, and the lower ends of the two outer plates 202 and the lower ends of the two inner plates 201 are respectively rotatably connected with a connecting rod 203, and the inner plate 201 and the outer plate 202 are arranged as two groups to form two groups of scissor lifting frames to ensure the balance of the lifting of the loading platform 4, and at the same time, the lower ends of the two outer plates 202 and the lower ends of the two inner plates 201 are respectively rotatably connected with a connecting rod 203. 03, to ensure that the two scissor lifts are lifted synchronously to prevent the lifting height from being inconsistent, which would cause the loading platform 4 to tilt. The upper ends of the two outer plates 202 and the upper ends of the two inner plates 201 are respectively connected with a slide bar 206, and the lifting assembly 2 also includes two symmetrically arranged sets of fixed plates 205 and fixed to the lower end of the loading platform 4. Through holes 2051 are respectively opened at both ends of the fixed plates 205. The slide bars 206 are connected to the upper ends of the two sets of scissor lifts and the slide bars 206 are slidably connected to the fixed plates 205. , realizing the passive movement of the upper end of the scissor lift, and at the same time, the two fixed plates 205 respectively place the inner plate 201 and the outer plate 202 therebetween, realizing the limit position of the inner plate 201 and the outer plate 202 to prevent the inner plate 201 and the outer plate 202 from being separated, the upper ends of the inner plate 201 and the outer plate 202 are located between each group of two fixed plates 205, the sliding rod 206 is slidably connected in the through hole 2051, the two connecting rods 203 are respectively rotatably connected to the telescopic ends of the lifting hydraulic rod 204, and the two lifting hydraulic rods 204 are simultaneously The lifting assembly 2 is extended and retracted step by step to drive the lifting assembly 2 to rise or fall. The lifting hydraulic rod 204 is fixed on the reinforcement frame 101. The front end and the rear end of the connecting rod 203 are respectively rotatably connected with pulleys, and the pulleys are located in the slide rail 102 of the frame 1 and slide. The front end and the rear end of the connecting rod 203 are respectively rotatably connected with pulleys, and the pulleys are placed in the slide rail 102 of the frame 1 to slide, which is beneficial to reduce the friction between the inner plate 201 and the outer plate 202 and the frame 1, so that the lifting hydraulic rod 204 can make it easier for the lifting assembly 2 to rise and fall.

[0026] When the utility model is used:

[0027] When changing tracks from the low rail to the high rail, the track-changing hydraulic rod 304 controls the fourth track-changing component, the third track-changing component, the second track-changing component and the first track-changing component in sequence (when changing tracks from the high rail to the low rail, the track-changing hydraulic rod 304 controls the first track-changing component, the second track-changing component, the third track-changing component and the fourth track-changing component in sequence). When changing tracks, the reduction box 306 and the motor 307 work in combination to drive the single-sided wheel 302 to rotate, so that the device moves to the high rail and stops, and the track-changing hydraulic rod 304 contracts to drive the fourth track-changing component to rotate, so that the lower end of the single-sided wheel 302 is tangent to the horizontal plane where the high rail is located. At this time, the reduction box 306 and the motor 307 drive the single-sided wheel 302 to continue rotating, so that the single-sided wheel of the fourth track-changing component The wheel 302 contacts the high rail and moves, and the third track-changing part approaches the high rail. At this time, the device stops moving, and the track-changing hydraulic rod 304 drives the third track-changing part to rotate, so that the lower end of the single-sided wheel 302 is tangent to the horizontal plane where the high rail is located. At this time, the reduction box 306 and the motor 307 drive the single-sided wheel 302 to continue to rotate, so that the single-sided wheel 302 of the third track-changing part contacts the high rail and moves, and the second track-changing part approaches the high rail. At this time, the device stops moving, and the second track-changing part and the first track-changing part repeat the above process until the first track-changing part comes to the high rail. At this time, the conversion from the low rail to the high rail is completed. While converting from the low rail to the high rail, the device ensures that the height of the material on the loading platform 4 remains unchanged before and after the track change.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-low track changing lift vehicle, characterized in that: The invention comprises a frame (1), wherein a lifting assembly (2) is provided at the upper end of the frame (1), a loading platform (4) is provided at the upper end of the lifting assembly (2), at least eight track changing assemblies (3) are provided at the lower end of the frame (1) and are arranged in two rows, the inner wall of the frame (1) is provided with slide rails (102) along its long sides, a reinforcing frame (101) is fixed to the inner wall of the frame (1), and mounting columns (103) corresponding to the track changing assemblies (3) are fixed to the lower end of the frame (1); A fixed beam (303) is fixed between the two front-to-back opposite track-changing assemblies (3) to form a track-changing component. The track-changing assembly (3) comprises a U-shaped fixed leg (301) rotatably connected to the mounting column (103). The lower ends of the fixed legs (301) are rotatably connected to single-sided wheels (302). A transmission rod (305) is fixedly connected between the two front-to-back opposite single-sided wheels (302). The transmission rod (305) is transmission-connected to the output end of a reduction gearbox (306). The input end of the reduction gearbox (306) is connected to a motor (307). The reduction gearbox (306) is fixed on the fixed leg (301). The motor (307) is fixed on the reduction gearbox (306). The left end of the fixed beam (303) is rotatably connected to one end of a track-changing hydraulic rod (304). The other end of the track-changing hydraulic rod (304) is rotatably connected to the reinforcing frame (101).

2. The high-low track changing lift vehicle according to claim 1, characterized in that: The lifting assembly (2) comprises an inner plate (201) and an outer plate (202), wherein the inner plate (201) and the outer plate (202) are cross-connected to form a scissor lifting frame and are provided with two groups, wherein a connecting rod (203) is rotatably connected between the lower ends of the two outer plates (202) and between the lower ends of the two inner plates (201), and a sliding rod (206) is rotatably connected between the upper ends of the two outer plates (202) and between the upper ends of the two inner plates (201), respectively. The lifting assembly (2) also comprises two groups of fixed plates (205) which are symmetrically arranged and fixed to the lower end of the loading platform (4), wherein two ends of the fixed plates (205) are respectively provided with through holes (2051), the upper ends of the inner plate (201) and the outer plate (202) are located between each group of two fixed plates (205), and the sliding rod (206) is slidably connected in the through holes (2051).

3. The high-low track changing lift vehicle according to claim 2, characterized in that: The two connecting rods (203) are respectively rotatably connected to the telescopic ends of the lifting hydraulic rod (204), and the lifting hydraulic rod (204) is fixed on the reinforcement frame (101).

4. The high-low track changing lift vehicle according to claim 1, characterized in that: The reinforcing frame (101) is formed by a transverse beam and a plurality of longitudinal beams, and a groove for the lifting component (2) to pass through is provided at the upper end of the reinforcing frame (101).

5. The high-low track changing lift vehicle according to claim 1, characterized in that: There are at least four track-changing parts, which are, from right to left, a first track-changing part, a second track-changing part, a third track-changing part and a fourth track-changing part.

6. The high-low track changing lift vehicle according to claim 2, characterized in that: The front end and the rear end of the connecting rod (203) are rotatably connected to pulleys respectively, and the pulleys are located and slide in the slide rails (102) of the frame (1).

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